Update to spice2x-25-04-25 (pre-apply)

> broken commit
2025-05-07 00:25:31 +09:00
parent 04dee88276
commit c94de456b5
543 changed files with 78491 additions and 91698 deletions
@@ -7,6 +7,7 @@
 #include "cardio_window.h"

 bool CARDIO_RUNNER_FLIP = false;
+bool CARDIO_RUNNER_TOGGLE = false;
 static bool CARDIO_RUNNER_INITIALIZED = false;
 static std::thread* CARDIO_RUNNER_THREAD = nullptr;
 static HWND CARDIO_RUNNER_HWND = NULL;
@@ -71,8 +72,17 @@ void cardio_runner_start(bool scan_hid) {
                        // if card not empty
                        if (*((uint64_t*) &device->usage_value[0]) > 0) {

+                            bool flip_order = CARDIO_RUNNER_FLIP;
+                            if (CARDIO_RUNNER_FLIP) {
+                                log_info("cardio", "Flip order of readers since flip option is set");
+                            }
+                            if (CARDIO_RUNNER_TOGGLE && (GetKeyState(VK_NUMLOCK) & 1) > 0) {
+                                log_info("cardio", "Flip order of readers since Num Lock is on");
+                                flip_order = !flip_order;
+                            }
+
                            // insert card
-                            if (CARDIO_RUNNER_FLIP)
+                            if (flip_order)
                                eamuse_card_insert((int) (device_no + 1) & 1, &device->usage_value[0]);
                            else
                                eamuse_card_insert((int) device_no & 1, &device->usage_value[0]);
@@ -2,6 +2,7 @@
 #define SPICETOOLS_CARDIO_RUNNER_H

 extern bool CARDIO_RUNNER_FLIP;
+extern bool CARDIO_RUNNER_TOGGLE;

 void cardio_runner_start(bool scan_hid);
 void cardio_runner_stop();
@@ -0,0 +1,4 @@
+---
+Language:        Cpp
+BasedOnStyle:  Google
+...
@@ -0,0 +1,36 @@
+# Project Files unneeded by docker
+.git
+.gitignore
+.github
+.dockerignore
+.clang-format
+appveyor.yml
+.travis.yml
+AUTHORS
+CONTRIBUTING.md
+CONTRIBUTORS
+LICENSE
+README.md
+
+bazel/ci/Makefile
+bazel/ci/docker
+bazel/ci/doc
+
+cmake/ci/Makefile
+cmake/ci/docker
+cmake/ci/doc
+cmake/ci/cache
+
+build/
+cmake_build/
+build_cross/
+cmake-build-*/
+out/
+
+# Editor directories and files
+.idea/
+.vagrant/
+.vscode/
+.vs/
+*.user
+*.swp
@@ -0,0 +1,19 @@
+# Build folders
+build/
+cmake_build/
+build_cross/
+cmake-build-*/
+out/
+
+# IDEs / CI temp files
+.idea/
+.vagrant/
+.vscode/
+.vs/
+*.swp
+
+# Bazel artifacts
+**/bazel-*
+
+# Per-user bazelrc files
+user.bazelrc
@@ -0,0 +1,21 @@
+---
+  dataSource: "prs"
+  ignoreLabels:
+    - "Apple M1"
+    - "duplicate"
+    - "help wanted"
+    - "invalid"
+    - "question"
+    - "wontfix"
+  onlyMilestones: false
+  groupBy:
+    "API Change":
+      - "API Change"
+    "New features / Enhancements":
+      - "enhancement"
+      - "internal"
+    "Bug Fixes":
+      - "bug"
+    "Misc":
+      - "misc"
+  changelogFilename: "CHANGELOG.md"
@@ -0,0 +1,378 @@
+# cpu_features, a cross platform C99 library to get cpu features at runtime.
+
+load("@bazel_skylib//lib:selects.bzl", "selects")
+load("//:bazel/platforms.bzl", "PLATFORM_CPU_ARM", "PLATFORM_CPU_ARM64", "PLATFORM_CPU_MIPS", "PLATFORM_CPU_PPC", "PLATFORM_CPU_RISCV32", "PLATFORM_CPU_RISCV64", "PLATFORM_CPU_X86_64")
+load("//:bazel/platforms.bzl", "PLATFORM_OS_MACOS")
+
+package(
+    default_visibility = ["//visibility:public"],
+    licenses = ["notice"],
+)
+
+exports_files(["LICENSE"])
+
+INCLUDES = ["include"]
+
+C99_FLAGS = [
+    "-std=c99",
+    "-Wall",
+    "-Wextra",
+    "-Wmissing-declarations",
+    "-Wmissing-prototypes",
+    "-Wno-implicit-fallthrough",
+    "-Wno-unused-function",
+    "-Wold-style-definition",
+    "-Wshadow",
+    "-Wsign-compare",
+    "-Wstrict-prototypes",
+]
+
+cc_library(
+    name = "cpu_features_macros",
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    textual_hdrs = ["include/cpu_features_macros.h"],
+)
+
+cc_library(
+    name = "cpu_features_cache_info",
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    textual_hdrs = ["include/cpu_features_cache_info.h"],
+    deps = [":cpu_features_macros"],
+)
+
+cc_library(
+    name = "bit_utils",
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    textual_hdrs = ["include/internal/bit_utils.h"],
+    deps = [":cpu_features_macros"],
+)
+
+cc_test(
+    name = "bit_utils_test",
+    srcs = ["test/bit_utils_test.cc"],
+    includes = INCLUDES,
+    deps = [
+        ":bit_utils",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_library(
+    name = "memory_utils",
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    textual_hdrs = [
+        "src/copy.inl",
+        "src/equals.inl",
+    ],
+)
+
+cc_library(
+    name = "string_view",
+    srcs = [
+        "src/string_view.c",
+    ],
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    textual_hdrs = ["include/internal/string_view.h"],
+    deps = [
+        ":cpu_features_macros",
+        ":memory_utils",
+    ],
+)
+
+cc_test(
+    name = "string_view_test",
+    srcs = ["test/string_view_test.cc"],
+    includes = INCLUDES,
+    deps = [
+        ":string_view",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_library(
+    name = "filesystem",
+    srcs = ["src/filesystem.c"],
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    textual_hdrs = ["include/internal/filesystem.h"],
+    deps = [":cpu_features_macros"],
+)
+
+cc_library(
+    name = "filesystem_for_testing",
+    testonly = 1,
+    srcs = [
+        "src/filesystem.c",
+        "test/filesystem_for_testing.cc",
+    ],
+    hdrs = [
+        "include/internal/filesystem.h",
+        "test/filesystem_for_testing.h",
+    ],
+    defines = ["CPU_FEATURES_MOCK_FILESYSTEM"],
+    includes = INCLUDES,
+    deps = [
+        ":cpu_features_macros",
+    ],
+)
+
+cc_library(
+    name = "stack_line_reader",
+    srcs = ["src/stack_line_reader.c"],
+    copts = C99_FLAGS,
+    defines = ["STACK_LINE_READER_BUFFER_SIZE=1024"],
+    includes = INCLUDES,
+    textual_hdrs = ["include/internal/stack_line_reader.h"],
+    deps = [
+        ":cpu_features_macros",
+        ":filesystem",
+        ":string_view",
+    ],
+)
+
+cc_test(
+    name = "stack_line_reader_test",
+    srcs = [
+        "include/internal/stack_line_reader.h",
+        "src/stack_line_reader.c",
+        "test/stack_line_reader_test.cc",
+    ],
+    defines = ["STACK_LINE_READER_BUFFER_SIZE=16"],
+    includes = INCLUDES,
+    deps = [
+        ":cpu_features_macros",
+        ":filesystem_for_testing",
+        ":string_view",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_library(
+    name = "stack_line_reader_to_use_with_filesystem_for_testing",
+    testonly = 1,
+    srcs = ["src/stack_line_reader.c"],
+    hdrs = ["include/internal/stack_line_reader.h"],
+    copts = C99_FLAGS,
+    defines = ["STACK_LINE_READER_BUFFER_SIZE=1024"],
+    includes = INCLUDES,
+    deps = [
+        ":cpu_features_macros",
+        ":filesystem_for_testing",
+        ":string_view",
+    ],
+)
+
+cc_library(
+    name = "hwcaps",
+    srcs = ["src/hwcaps.c"],
+    copts = C99_FLAGS,
+    defines = selects.with_or({
+        PLATFORM_OS_MACOS: ["HAVE_DLFCN_H"],
+        "//conditions:default": ["HAVE_STRONG_GETAUXVAL"],
+    }),
+    includes = INCLUDES,
+    textual_hdrs = ["include/internal/hwcaps.h"],
+    deps = [
+        ":cpu_features_macros",
+        ":filesystem",
+        ":string_view",
+    ],
+)
+
+cc_library(
+    name = "hwcaps_for_testing",
+    testonly = 1,
+    srcs = [
+        "src/hwcaps.c",
+        "test/hwcaps_for_testing.cc",
+    ],
+    hdrs = [
+        "include/internal/hwcaps.h",
+        "test/hwcaps_for_testing.h",
+    ],
+    defines = [
+        "CPU_FEATURES_MOCK_GET_ELF_HWCAP_FROM_GETAUXVAL",
+        "CPU_FEATURES_TEST",
+    ],
+    includes = INCLUDES,
+    deps = [
+        ":cpu_features_macros",
+        ":filesystem_for_testing",
+        ":string_view",
+    ],
+)
+
+cc_library(
+    name = "cpuinfo",
+    srcs = selects.with_or({
+        PLATFORM_CPU_X86_64: [
+            "src/impl_x86_freebsd.c",
+            "src/impl_x86_linux_or_android.c",
+            "src/impl_x86_macos.c",
+            "src/impl_x86_windows.c",
+        ],
+        PLATFORM_CPU_ARM: ["src/impl_arm_linux_or_android.c"],
+        PLATFORM_CPU_ARM64: [
+            "src/impl_aarch64_linux_or_android.c",
+            "src/impl_aarch64_macos_or_iphone.c",
+            "src/impl_aarch64_windows.c",
+        ],
+        PLATFORM_CPU_MIPS: ["src/impl_mips_linux_or_android.c"],
+        PLATFORM_CPU_PPC: ["src/impl_ppc_linux.c"],
+        PLATFORM_CPU_RISCV32: ["src/impl_riscv_linux.c"],
+        PLATFORM_CPU_RISCV64: ["src/impl_riscv_linux.c"],
+    }),
+    hdrs = selects.with_or({
+        PLATFORM_CPU_X86_64: [
+            "include/cpuinfo_x86.h",
+            "include/internal/cpuid_x86.h",
+            "include/internal/windows_utils.h",
+        ],
+        PLATFORM_CPU_ARM: ["include/cpuinfo_arm.h"],
+        PLATFORM_CPU_ARM64: ["include/cpuinfo_aarch64.h"],
+        PLATFORM_CPU_MIPS: ["include/cpuinfo_mips.h"],
+        PLATFORM_CPU_PPC: ["include/cpuinfo_ppc.h"],
+        PLATFORM_CPU_RISCV32: ["include/cpuinfo_riscv.h"],
+        PLATFORM_CPU_RISCV64: ["include/cpuinfo_riscv.h"],
+    }),
+    copts = C99_FLAGS,
+    defines = selects.with_or({
+        PLATFORM_OS_MACOS: ["HAVE_SYSCTLBYNAME"],
+        "//conditions:default": [],
+    }),
+    includes = INCLUDES,
+    textual_hdrs = selects.with_or({
+        PLATFORM_CPU_X86_64: ["src/impl_x86__base_implementation.inl"],
+        PLATFORM_CPU_ARM64: ["src/impl_aarch64__base_implementation.inl"],
+        "//conditions:default": [],
+    }) + [
+        "src/define_introspection.inl",
+        "src/define_introspection_and_hwcaps.inl",
+    ],
+    deps = [
+        ":bit_utils",
+        ":cpu_features_cache_info",
+        ":cpu_features_macros",
+        ":filesystem",
+        ":hwcaps",
+        ":memory_utils",
+        ":stack_line_reader",
+        ":string_view",
+    ],
+)
+
+cc_library(
+    name = "cpuinfo_for_testing",
+    testonly = 1,
+    srcs = selects.with_or({
+        PLATFORM_CPU_X86_64: [
+            "src/impl_x86_freebsd.c",
+            "src/impl_x86_linux_or_android.c",
+            "src/impl_x86_macos.c",
+            "src/impl_x86_windows.c",
+        ],
+        PLATFORM_CPU_ARM: ["src/impl_arm_linux_or_android.c"],
+        PLATFORM_CPU_ARM64: [
+            "src/impl_aarch64_linux_or_android.c",
+            "src/impl_aarch64_macos_or_iphone.c",
+            "src/impl_aarch64_windows.c",
+        ],
+        PLATFORM_CPU_MIPS: ["src/impl_mips_linux_or_android.c"],
+        PLATFORM_CPU_PPC: ["src/impl_ppc_linux.c"],
+        PLATFORM_CPU_RISCV32: ["src/impl_riscv_linux.c"],
+        PLATFORM_CPU_RISCV64: ["src/impl_riscv_linux.c"],
+    }),
+    hdrs = selects.with_or({
+        PLATFORM_CPU_X86_64: [
+            "include/cpuinfo_x86.h",
+            "include/internal/cpuid_x86.h",
+            "include/internal/windows_utils.h",
+        ],
+        PLATFORM_CPU_ARM: ["include/cpuinfo_arm.h"],
+        PLATFORM_CPU_ARM64: ["include/cpuinfo_aarch64.h"],
+        PLATFORM_CPU_MIPS: ["include/cpuinfo_mips.h"],
+        PLATFORM_CPU_PPC: ["include/cpuinfo_ppc.h"],
+        PLATFORM_CPU_RISCV32: ["include/cpuinfo_riscv.h"],
+        PLATFORM_CPU_RISCV64: ["include/cpuinfo_riscv.h"],
+    }),
+    copts = C99_FLAGS,
+    defines = selects.with_or({
+        PLATFORM_CPU_X86_64: ["CPU_FEATURES_MOCK_CPUID_X86"],
+        "//conditions:default": [],
+    }) + selects.with_or({
+        PLATFORM_OS_MACOS: ["HAVE_SYSCTLBYNAME"],
+        "//conditions:default": [],
+    }),
+    includes = INCLUDES,
+    textual_hdrs = selects.with_or({
+        PLATFORM_CPU_X86_64: ["src/impl_x86__base_implementation.inl"],
+        PLATFORM_CPU_ARM64: ["src/impl_aarch64__base_implementation.inl"],
+        "//conditions:default": [],
+    }) + [
+        "src/define_introspection.inl",
+        "src/define_introspection_and_hwcaps.inl",
+    ],
+    deps = [
+        ":bit_utils",
+        ":cpu_features_cache_info",
+        ":cpu_features_macros",
+        ":filesystem_for_testing",
+        ":hwcaps_for_testing",
+        ":memory_utils",
+        ":stack_line_reader_to_use_with_filesystem_for_testing",
+        ":string_view",
+    ],
+)
+
+cc_test(
+    name = "cpuinfo_test",
+    srcs = selects.with_or({
+        PLATFORM_CPU_ARM64: ["test/cpuinfo_aarch64_test.cc"],
+        PLATFORM_CPU_ARM: ["test/cpuinfo_arm_test.cc"],
+        PLATFORM_CPU_MIPS: ["test/cpuinfo_mips_test.cc"],
+        PLATFORM_CPU_PPC: ["test/cpuinfo_ppc_test.cc"],
+        PLATFORM_CPU_RISCV32: ["test/cpuinfo_riscv_test.cc"],
+        PLATFORM_CPU_RISCV64: ["test/cpuinfo_riscv_test.cc"],
+        PLATFORM_CPU_X86_64: ["test/cpuinfo_x86_test.cc"],
+    }),
+    includes = INCLUDES,
+    deps = [
+        ":cpuinfo_for_testing",
+        ":filesystem_for_testing",
+        ":hwcaps_for_testing",
+        ":string_view",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_binary(
+    name = "list_cpu_features",
+    srcs = ["src/utils/list_cpu_features.c"],
+    copts = C99_FLAGS,
+    includes = INCLUDES,
+    deps = [
+        ":bit_utils",
+        ":cpu_features_macros",
+        ":cpuinfo",
+    ],
+)
+
+cc_library(
+    name = "ndk_compat",
+    srcs = ["ndk_compat/cpu-features.c"],
+    copts = C99_FLAGS,
+    includes = INCLUDES + ["ndk_compat"],
+    textual_hdrs = ["ndk_compat/cpu-features.h"],
+    deps = [
+        ":cpu_features_macros",
+        ":cpuinfo",
+        ":filesystem",
+        ":stack_line_reader",
+        ":string_view",
+    ],
+)
@@ -0,0 +1,302 @@
+cmake_minimum_required(VERSION 3.13)
+
+# option() honors normal variables.
+# see: https://cmake.org/cmake/help/git-stage/policy/CMP0077.html
+if(POLICY CMP0077)
+  cmake_policy(SET CMP0077 NEW)
+endif()
+
+project(CpuFeatures VERSION 0.9.0 LANGUAGES C)
+
+set(CMAKE_C_STANDARD 99)
+
+# when cpu_features is included as subproject (i.e. using add_subdirectory(cpu_features))
+# in the source tree of a project that uses it, test rules are disabled.
+if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+  option(BUILD_TESTING "Enable test rule" OFF)
+else()
+  option(BUILD_TESTING "Enable test rule" ON)
+endif()
+
+# Default Build Type to be Release
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "Release" CACHE STRING
+      "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel."
+      FORCE)
+endif(NOT CMAKE_BUILD_TYPE)
+
+# An option to enable/disable the executable target list_cpu_features.
+# Disable it by default if the project is included as a subproject.
+if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+  option(BUILD_EXECUTABLE "Build list_cpu_features executable." OFF)
+else()
+  option(BUILD_EXECUTABLE "Build list_cpu_features executable." ON)
+endif()
+
+# An option which allows to switch off install steps. Useful for embedding.
+# Disable it by default if the project is included as a subproject.
+if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+  option(ENABLE_INSTALL "Enable install targets" OFF)
+else()
+  option(ENABLE_INSTALL "Enable install targets" ON)
+endif()
+
+# BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to make
+# it prominent in the GUI.
+# cpu_features uses bit-fields which are - to some extends - implementation-defined (see https://en.cppreference.com/w/c/language/bit_field).
+# As a consequence it is discouraged to use cpu_features as a shared library because different compilers may interpret the code in different ways.
+# Prefer static linking from source whenever possible.
+option(BUILD_SHARED_LIBS "Build library as shared." OFF)
+
+# Force PIC on unix when building shared libs
+# see: https://en.wikipedia.org/wiki/Position-independent_code
+if(BUILD_SHARED_LIBS AND UNIX)
+  option(CMAKE_POSITION_INDEPENDENT_CODE "Build with Position Independant Code." ON)
+endif()
+
+include(CheckIncludeFile)
+include(CheckSymbolExists)
+include(GNUInstallDirs)
+
+macro(setup_include_and_definitions TARGET_NAME)
+  target_include_directories(${TARGET_NAME}
+    PUBLIC  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+    PRIVATE $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include/internal>
+  )
+  target_compile_definitions(${TARGET_NAME}
+    PUBLIC STACK_LINE_READER_BUFFER_SIZE=1024
+  )
+endmacro()
+
+set(PROCESSOR_IS_MIPS FALSE)
+set(PROCESSOR_IS_ARM FALSE)
+set(PROCESSOR_IS_AARCH64 FALSE)
+set(PROCESSOR_IS_X86 FALSE)
+set(PROCESSOR_IS_POWER FALSE)
+set(PROCESSOR_IS_S390X FALSE)
+set(PROCESSOR_IS_RISCV FALSE)
+set(PROCESSOR_IS_LOONGARCH FALSE)
+
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
+  set(PROCESSOR_IS_MIPS TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(^aarch64)|(^arm64)|(^ARM64)")
+  set(PROCESSOR_IS_AARCH64 TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
+  set(PROCESSOR_IS_ARM TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(x86)|(x86_64)|(AMD64|amd64)|(^i.86$)")
+  set(PROCESSOR_IS_X86 TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)")
+  set(PROCESSOR_IS_POWER TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(s390x)")
+  set(PROCESSOR_IS_S390X TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^riscv")
+  set(PROCESSOR_IS_RISCV TRUE)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^loongarch")
+  set(PROCESSOR_IS_LOONGARCH TRUE)
+endif()
+
+macro(add_cpu_features_headers_and_sources HDRS_LIST_NAME SRCS_LIST_NAME)
+  list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpu_features_macros.h)
+  list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpu_features_cache_info.h)
+  file(GLOB IMPL_SOURCES CONFIGURE_DEPENDS "${PROJECT_SOURCE_DIR}/src/impl_*.c")
+  list(APPEND ${SRCS_LIST_NAME} ${IMPL_SOURCES})
+  if(PROCESSOR_IS_MIPS)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_mips.h)
+  elseif(PROCESSOR_IS_ARM)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_arm.h)
+  elseif(PROCESSOR_IS_AARCH64)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_aarch64.h)
+      list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/internal/windows_utils.h)
+  elseif(PROCESSOR_IS_X86)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_x86.h)
+      list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/internal/cpuid_x86.h)
+      list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/internal/windows_utils.h)
+  elseif(PROCESSOR_IS_POWER)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_ppc.h)
+  elseif(PROCESSOR_IS_S390X)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_s390x.h)
+  elseif(PROCESSOR_IS_RISCV)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_riscv.h)
+  elseif(PROCESSOR_IS_LOONGARCH)
+      list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_loongarch.h)
+  else()
+    message(FATAL_ERROR "Unsupported architectures ${CMAKE_SYSTEM_PROCESSOR}")
+  endif()
+endmacro()
+
+#
+# library : utils
+#
+
+add_library(utils OBJECT
+  ${PROJECT_SOURCE_DIR}/include/internal/bit_utils.h
+  ${PROJECT_SOURCE_DIR}/include/internal/filesystem.h
+  ${PROJECT_SOURCE_DIR}/include/internal/stack_line_reader.h
+  ${PROJECT_SOURCE_DIR}/include/internal/string_view.h
+  ${PROJECT_SOURCE_DIR}/src/filesystem.c
+  ${PROJECT_SOURCE_DIR}/src/stack_line_reader.c
+  ${PROJECT_SOURCE_DIR}/src/string_view.c
+)
+setup_include_and_definitions(utils)
+
+#
+# library : unix_based_hardware_detection
+#
+
+if(UNIX)
+  add_library(unix_based_hardware_detection OBJECT
+    ${PROJECT_SOURCE_DIR}/include/internal/hwcaps.h
+    ${PROJECT_SOURCE_DIR}/src/hwcaps.c
+  )
+  setup_include_and_definitions(unix_based_hardware_detection)
+  check_include_file(dlfcn.h HAVE_DLFCN_H)
+  if(HAVE_DLFCN_H)
+    target_compile_definitions(unix_based_hardware_detection PRIVATE HAVE_DLFCN_H)
+  endif()
+  check_symbol_exists(getauxval "sys/auxv.h" HAVE_STRONG_GETAUXVAL)
+  if(HAVE_STRONG_GETAUXVAL)
+    target_compile_definitions(unix_based_hardware_detection PRIVATE HAVE_STRONG_GETAUXVAL)
+  endif()
+endif()
+
+#
+# library : cpu_features
+#
+set (CPU_FEATURES_HDRS)
+set (CPU_FEATURES_SRCS)
+add_cpu_features_headers_and_sources(CPU_FEATURES_HDRS CPU_FEATURES_SRCS)
+list(APPEND CPU_FEATURES_SRCS $<TARGET_OBJECTS:utils>)
+if(NOT PROCESSOR_IS_X86 AND UNIX)
+  list(APPEND CPU_FEATURES_SRCS $<TARGET_OBJECTS:unix_based_hardware_detection>)
+endif()
+add_library(cpu_features ${CPU_FEATURES_HDRS} ${CPU_FEATURES_SRCS})
+set_target_properties(cpu_features PROPERTIES PUBLIC_HEADER "${CPU_FEATURES_HDRS}")
+setup_include_and_definitions(cpu_features)
+target_link_libraries(cpu_features PUBLIC ${CMAKE_DL_LIBS})
+target_include_directories(cpu_features
+  PUBLIC $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/cpu_features>
+)
+
+if(APPLE)
+  target_compile_definitions(cpu_features PRIVATE HAVE_SYSCTLBYNAME)
+endif()
+add_library(CpuFeatures::cpu_features ALIAS cpu_features)
+
+#
+# program : list_cpu_features
+#
+
+if(BUILD_EXECUTABLE)
+  add_executable(list_cpu_features ${PROJECT_SOURCE_DIR}/src/utils/list_cpu_features.c)
+  target_link_libraries(list_cpu_features PRIVATE cpu_features)
+  add_executable(CpuFeatures::list_cpu_features ALIAS list_cpu_features)
+endif()
+
+#
+# ndk_compat
+#
+
+if(ANDROID)
+add_subdirectory(ndk_compat)
+endif()
+
+#
+# tests
+#
+
+include(CTest)
+if(BUILD_TESTING)
+  # Automatically incorporate googletest into the CMake Project if target not
+  # found.
+  enable_language(CXX)
+
+  set(CMAKE_CXX_STANDARD 14)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  set(CMAKE_CXX_EXTENSIONS OFF) # prefer use of -std14 instead of -gnustd14
+
+  if(NOT TARGET gtest OR NOT TARGET gmock_main)
+    # Download and unpack googletest at configure time.
+    configure_file(
+      cmake/googletest.CMakeLists.txt.in
+      googletest-download/CMakeLists.txt
+    )
+
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
+      RESULT_VARIABLE result
+      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
+
+    if(result)
+      message(FATAL_ERROR "CMake step for googletest failed: ${result}")
+    endif()
+
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} --build .
+      RESULT_VARIABLE result
+      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
+
+    if(result)
+      message(FATAL_ERROR "Build step for googletest failed: ${result}")
+    endif()
+
+    # Prevent overriding the parent project's compiler/linker settings on
+    # Windows.
+    set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+    # Add googletest directly to our build. This defines the gtest and
+    # gtest_main targets.
+    add_subdirectory(${CMAKE_BINARY_DIR}/googletest-src
+                     ${CMAKE_BINARY_DIR}/googletest-build
+                     EXCLUDE_FROM_ALL)
+  endif()
+
+  add_subdirectory(test)
+endif()
+
+#
+# Install cpu_features and list_cpu_features
+#
+if(ENABLE_INSTALL)
+  include(GNUInstallDirs)
+  install(TARGETS cpu_features
+    EXPORT CpuFeaturesTargets
+    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/cpu_features
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    BUNDLE DESTINATION ${CMAKE_INSTALL_BINDIR}
+  )
+  if(BUILD_EXECUTABLE)
+    install(TARGETS list_cpu_features
+      EXPORT CpuFeaturesTargets
+      PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/cpu_features
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+      BUNDLE DESTINATION ${CMAKE_INSTALL_BINDIR}
+    )
+  endif()
+  install(EXPORT CpuFeaturesTargets
+    NAMESPACE CpuFeatures::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/CpuFeatures
+    COMPONENT Devel
+  )
+  include(CMakePackageConfigHelpers)
+  configure_package_config_file(cmake/CpuFeaturesConfig.cmake.in
+    "${PROJECT_BINARY_DIR}/CpuFeaturesConfig.cmake"
+    INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/CpuFeatures"
+    NO_SET_AND_CHECK_MACRO
+    NO_CHECK_REQUIRED_COMPONENTS_MACRO
+  )
+  write_basic_package_version_file(
+    "${PROJECT_BINARY_DIR}/CpuFeaturesConfigVersion.cmake"
+    COMPATIBILITY SameMajorVersion
+  )
+  install(
+    FILES
+      "${PROJECT_BINARY_DIR}/CpuFeaturesConfig.cmake"
+      "${PROJECT_BINARY_DIR}/CpuFeaturesConfigVersion.cmake"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/CpuFeatures"
+    COMPONENT Devel
+  )
+endif()
@@ -0,0 +1,23 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution;
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
@@ -0,0 +1,230 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
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+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
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+
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+
+      To apply the Apache License to your work, attach the following
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+--------------------------------------------------------------------------------
+For files in the `ndk_compat` folder:
+--------------------------------------------------------------------------------
+
+Copyright (C) 2010 The Android Open Source Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
@@ -0,0 +1,282 @@
+# cpu_features
+
+A cross-platform C library to retrieve CPU features (such as available
+instructions) at runtime.
+
+# GitHub-CI Status
+
+[comment]: <> (The following lines are generated by "scripts/generate_badges.d" that you can run online https://run.dlang.io/)
+
+|  | Linux | FreeBSD | MacOS | Windows |
+| :-- | --: | --: | --: | --: |
+| amd64 | [![CMake][i1a0]][l1a0]<br/>[![Bazel][i1a1]][l1a1] | [![CMake][i2a0]][l2a0]<br/>![Bazel][d1] | [![CMake][i3a0]][l3a0]<br/>[![Bazel][i3a1]][l3a1] | [![CMake][i4a0]][l4a0]<br/>![Bazel][d1] |
+| AArch64 | [![CMake][i1b0]][l1b0]<br/>[![Bazel][i1b1]][l1b1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+| ARM | [![CMake][i1c0]][l1c0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+| MIPS | [![CMake][i1d0]][l1d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+| POWER | [![CMake][i1e0]][l1e0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+| RISCV | [![CMake][i1f0]][l1f0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+| LOONGARCH | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+| s390x | [![CMake][i1h0]][l1h0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] | ![CMake][d0]<br/>![Bazel][d1] |
+
+[d0]: https://img.shields.io/badge/n%2Fa-lightgrey?&logo=cmake
+[d1]: https://img.shields.io/badge/n%2Fa-lightgrey?&logo=data:image/svg%2bxml;base64,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
+[i1a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i1a1]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_linux_bazel.yml?branch=main&event=push&label=&logo=data:image/svg%2bxml;base64,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
+[i1b0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/aarch64_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i1b1]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/aarch64_linux_bazel.yml?branch=main&event=push&label=&logo=data:image/svg%2bxml;base64,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
+[i1c0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/arm_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i1d0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/mips_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i1e0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/power_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i1f0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/riscv_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i1h0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/s390x_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i2a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_freebsd_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i3a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_macos_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i3a1]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_macos_bazel.yml?branch=main&event=push&label=&logo=data:image/svg%2bxml;base64,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
+[i4a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_windows_cmake.yml?branch=main&event=push&label=&logo=cmake
+[l1a0]: https://github.com/google/cpu_features/actions/workflows/amd64_linux_cmake.yml
+[l1a1]: https://github.com/google/cpu_features/actions/workflows/amd64_linux_bazel.yml
+[l1b0]: https://github.com/google/cpu_features/actions/workflows/aarch64_linux_cmake.yml
+[l1b1]: https://github.com/google/cpu_features/actions/workflows/aarch64_linux_bazel.yml
+[l1c0]: https://github.com/google/cpu_features/actions/workflows/arm_linux_cmake.yml
+[l1d0]: https://github.com/google/cpu_features/actions/workflows/mips_linux_cmake.yml
+[l1e0]: https://github.com/google/cpu_features/actions/workflows/power_linux_cmake.yml
+[l1f0]: https://github.com/google/cpu_features/actions/workflows/riscv_linux_cmake.yml
+[l1h0]: https://github.com/google/cpu_features/actions/workflows/s390x_linux_cmake.yml
+[l2a0]: https://github.com/google/cpu_features/actions/workflows/amd64_freebsd_cmake.yml
+[l3a0]: https://github.com/google/cpu_features/actions/workflows/amd64_macos_cmake.yml
+[l3a1]: https://github.com/google/cpu_features/actions/workflows/amd64_macos_bazel.yml
+[l4a0]: https://github.com/google/cpu_features/actions/workflows/amd64_windows_cmake.yml
+
+## Table of Contents
+
+- [Design Rationale](#rationale)
+- [Code samples](#codesample)
+- [Running sample code](#usagesample)
+- [What's supported](#support)
+- [Android NDK's drop in replacement](#ndk)
+- [License](#license)
+- [Build with cmake](#cmake)
+- [Community Bindings](#bindings)
+
+<a name="rationale"></a>
+## Design Rationale
+
+-   **Simple to use.** See the snippets below for examples.
+-   **Extensible.** Easy to add missing features or architectures.
+-   **Compatible with old compilers** and available on many architectures so it
+    can be used widely. To ensure that cpu_features works on as many platforms
+    as possible, we implemented it in a highly portable version of C: C99.
+-   **Sandbox-compatible.** The library uses a variety of strategies to cope
+    with sandboxed environments or when `cpuid` is unavailable. This is useful
+    when running integration tests in hermetic environments.
+-   **Thread safe, no memory allocation, and raises no exceptions.**
+    cpu_features is suitable for implementing fundamental libc functions like
+    `malloc`, `memcpy`, and `memcmp`.
+-   **Unit tested.**
+
+<a name="codesample"></a>
+## Code samples
+
+**Note:** For C++ code, the library functions are defined in the `cpu_features` namespace.
+
+### Checking features at runtime
+
+Here's a simple example that executes a codepath if the CPU supports both the
+AES and the SSE4.2 instruction sets:
+
+```c
+#include "cpuinfo_x86.h"
+
+// For C++, add `using namespace cpu_features;`
+static const X86Features features = GetX86Info().features;
+
+void Compute(void) {
+  if (features.aes && features.sse4_2) {
+    // Run optimized code.
+  } else {
+    // Run standard code.
+  }
+}
+```
+
+### Caching for faster evaluation of complex checks
+
+If you wish, you can read all the features at once into a global variable, and
+then query for the specific features you care about. Below, we store all the ARM
+features and then check whether AES and NEON are supported.
+
+```c
+#include <stdbool.h>
+#include "cpuinfo_arm.h"
+
+// For C++, add `using namespace cpu_features;`
+static const ArmFeatures features = GetArmInfo().features;
+static const bool has_aes_and_neon = features.aes && features.neon;
+
+// use has_aes_and_neon.
+```
+
+This is a good approach to take if you're checking for combinations of features
+when using a compiler that is slow to extract individual bits from bit-packed
+structures.
+
+### Checking compile time flags
+
+The following code determines whether the compiler was told to use the AVX
+instruction set (e.g., `g++ -mavx`) and sets `has_avx` accordingly.
+
+```c
+#include <stdbool.h>
+#include "cpuinfo_x86.h"
+
+// For C++, add `using namespace cpu_features;`
+static const X86Features features = GetX86Info().features;
+static const bool has_avx = CPU_FEATURES_COMPILED_X86_AVX || features.avx;
+
+// use has_avx.
+```
+
+`CPU_FEATURES_COMPILED_X86_AVX` is set to 1 if the compiler was instructed to
+use AVX and 0 otherwise, combining compile time and runtime knowledge.
+
+### Rejecting poor hardware implementations based on microarchitecture
+
+On x86, the first incarnation of a feature in a microarchitecture might not be
+the most efficient (e.g. AVX on Sandy Bridge). We provide a function to retrieve
+the underlying microarchitecture so you can decide whether to use it.
+
+Below, `has_fast_avx` is set to 1 if the CPU supports the AVX instruction
+set&mdash;but only if it's not Sandy Bridge.
+
+```c
+#include <stdbool.h>
+#include "cpuinfo_x86.h"
+
+// For C++, add `using namespace cpu_features;`
+static const X86Info info = GetX86Info();
+static const X86Microarchitecture uarch = GetX86Microarchitecture(&info);
+static const bool has_fast_avx = info.features.avx && uarch != INTEL_SNB;
+
+// use has_fast_avx.
+```
+
+This feature is currently available only for x86 microarchitectures.
+
+<a name="usagesample"></a>
+### Running sample code
+
+Building `cpu_features` (check [quickstart](#quickstart) below) brings a small executable to test the library.
+
+```shell
+ % ./build/list_cpu_features
+arch            : x86
+brand           :        Intel(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz
+family          :   6 (0x06)
+model           :  45 (0x2D)
+stepping        :   7 (0x07)
+uarch           : INTEL_SNB
+flags           : aes,avx,cx16,smx,sse4_1,sse4_2,ssse3
+```
+
+```shell
+% ./build/list_cpu_features --json
+{"arch":"x86","brand":"       Intel(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz","family":6,"model":45,"stepping":7,"uarch":"INTEL_SNB","flags":["aes","avx","cx16","smx","sse4_1","sse4_2","ssse3"]}
+```
+
+<a name="support"></a>
+## What's supported
+
+|         | x86³ | AArch64 | ARM     | MIPS⁴   | POWER   | RISCV   | Loongarch | s390x   |
+|---------|:----:|:-------:|:-------:|:-------:|:-------:|:-------:|:---------:|:-------:|
+| Linux   | yes² | yes¹    | yes¹    | yes¹    | yes¹    | yes¹    | yes¹      | yes¹    |
+| FreeBSD | yes² | not yet | not yet | not yet | not yet | N/A     | not yet   | not yet |
+| MacOs   | yes² | yes⁵    | N/A     | N/A     | N/A     | N/A     | N/A       | N/A     |
+| Windows | yes² | not yet | not yet | N/A     | N/A     | N/A     | N/A       | N/A     |
+| Android | yes² | yes¹    | yes¹    | yes¹    | N/A     | N/A     | N/A       | N/A     |
+| iOS     | N/A  | not yet | not yet | N/A     | N/A     | N/A     | N/A       | N/A     |
+
+1.  **Features revealed from Linux.** We gather data from several sources
+    depending on availability:
+    +   from glibc's
+        [getauxval](https://www.gnu.org/software/libc/manual/html_node/Auxiliary-Vector.html)
+    +   by parsing `/proc/self/auxv`
+    +   by parsing `/proc/cpuinfo`
+2.  **Features revealed from CPU.** features are retrieved by using the `cpuid`
+    instruction.
+3.  **Microarchitecture detection.** On x86 some features are not always
+    implemented efficiently in hardware (e.g. AVX on Sandybridge). Exposing the
+    microarchitecture allows the client to reject particular microarchitectures.
+4.  All flavors of Mips are supported, little and big endian as well as 32/64
+    bits.
+5.  **Features revealed from sysctl.** features are retrieved by the `sysctl`
+    instruction.
+
+<a name="ndk"></a>
+## Android NDK's drop in replacement
+
+[cpu_features](https://github.com/google/cpu_features) is now officially
+supporting Android and offers a drop in replacement of for the NDK's [cpu-features.h](https://android.googlesource.com/platform/ndk/+/main/sources/android/cpufeatures/cpu-features.h)
+, see [ndk_compat](ndk_compat) folder for details.
+
+<a name="license"></a>
+## License
+
+The cpu_features library is licensed under the terms of the Apache license.
+See [LICENSE](LICENSE) for more information.
+
+<a name="cmake"></a>
+## Build with CMake
+
+Please check the [CMake build instructions](cmake/README.md).
+
+<a name="quickstart"></a>
+### Quickstart
+
+- Run `list_cpu_features`
+  ```sh
+  cmake -S. -Bbuild -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release
+  cmake --build build --config Release -j
+  ./build/list_cpu_features --json
+  ```
+
+  _Note_: Use `--target ALL_BUILD` on the second line for `Visual Studio` and `XCode`.
+
+- run tests
+  ```sh
+  cmake -S. -Bbuild -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug
+  cmake --build build --config Debug -j
+  cmake --build build --config Debug --target test
+  ```
+
+  _Note_: Use `--target RUN_TESTS` on the last line for `Visual Studio` and `--target RUN_TEST` for `XCode`.
+
+
+- install `cpu_features`
+  ```sh
+  cmake --build build --config Release --target install -v
+  ```
+
+  _Note_: Use `--target INSTALL` for `Visual Studio`.
+
+  _Note_: When using `Makefile` or `XCode` generator, you can use
+  [`DESTDIR`](https://www.gnu.org/software/make/manual/html_node/DESTDIR.html)
+  to install on a local repository.<br>
+  e.g.
+  ```sh
+  cmake --build build --config Release --target install -v -- DESTDIR=install
+  ```
+
+<a name="bindings"></a>
+## Community bindings
+
+Links provided here are not affiliated with Google but are kindly provided by the OSS Community.
+
+ - .Net
+   - https://github.com/toor1245/cpu_features.NET
+ - Python
+   - https://github.com/Narasimha1997/py_cpu
+ - Java
+   - https://github.com/aecsocket/cpu-features-java
+
+
+_Send PR to showcase your wrapper here_
@@ -0,0 +1,19 @@
+workspace(name = "com_google_cpufeatures")
+
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+
+git_repository(
+    name = "com_google_googletest",
+    tag = "release-1.11.0",
+    remote = "https://github.com/google/googletest.git",
+)
+
+git_repository(
+    name = "bazel_skylib",
+    tag = "1.2.0",
+    remote = "https://github.com/bazelbuild/bazel-skylib.git",
+)
+
+load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
+
+bazel_skylib_workspace()
@@ -0,0 +1,3 @@
+# CpuFeatures CMake configuration file
+
+include("${CMAKE_CURRENT_LIST_DIR}/CpuFeaturesTargets.cmake")
@@ -0,0 +1,3 @@
+# CpuFeaturesNdkCompat CMake configuration file
+
+include("${CMAKE_CURRENT_LIST_DIR}/CpuFeaturesNdkCompatTargets.cmake")
@@ -0,0 +1,30 @@
+# CMake build instructions
+
+## Recommended usage : Incorporating cpu_features into a CMake project
+
+For API / ABI compatibility reasons, it is recommended to build and use
+cpu_features in a subdirectory of your project or as an embedded dependency.
+
+This is similar to the recommended usage of the googletest framework
+( https://github.com/google/googletest/blob/main/googletest/README.md )
+
+Build and use step-by-step
+
+
+1- Download cpu_features and copy it in a sub-directory in your project.
+or add cpu_features as a git-submodule in your project
+
+2- You can then use the cmake command `add_subdirectory()` to include
+cpu_features directly and use the `cpu_features` target in your project.
+
+3- Add the `CpuFeatures::cpu_features` target to the `target_link_libraries()` section of
+your executable or of your library.
+
+## Disabling tests
+
+CMake default options for cpu_features is `Release` built type with tests
+enabled. To disable testing set cmake `BUILD_TESTING` variable to `OFF`.
+e.g.
+```sh
+cmake -S. -Bbuild -DBUILD_TESTING=OFF
+```
@@ -0,0 +1,252 @@
+PROJECT := cpu_features
+BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
+SHA1 := $(shell git rev-parse --verify HEAD)
+
+# General commands
+.PHONY: help
+BOLD=\e[1m
+RESET=\e[0m
+
+help:
+	@echo -e "${BOLD}SYNOPSIS${RESET}"
+	@echo -e "\tmake <target> [NOCACHE=1]"
+	@echo
+	@echo -e "${BOLD}DESCRIPTION${RESET}"
+	@echo -e "\ttest build inside docker container to have a reproductible build."
+	@echo
+	@echo -e "${BOLD}MAKE TARGETS${RESET}"
+	@echo -e "\t${BOLD}help${RESET}: display this help and exit."
+	@echo
+	@echo -e "\t${BOLD}amd64_<stage>${RESET}: build <stage> docker image using an Ubuntu:latest x86_64 base image."
+	@echo -e "\t${BOLD}save_amd64_<stage>${RESET}: Save the <stage> docker image."
+	@echo -e "\t${BOLD}sh_amd64_<stage>${RESET}: run a container using the <stage> docker image (debug purpose)."
+	@echo -e "\t${BOLD}clean_amd64_<stage>${RESET}: Remove cache and docker image."
+	@echo
+	@echo -e "\tWith ${BOLD}<stage>${RESET}:"
+	@echo -e "\t\t${BOLD}env${RESET}"
+	@echo -e "\t\t${BOLD}devel${RESET}"
+	@echo -e "\t\t${BOLD}build${RESET}"
+	@echo -e "\t\t${BOLD}test${RESET}"
+	@echo -e "\t\t${BOLD}install_env${RESET}"
+	@echo -e "\t\t${BOLD}install_devel${RESET}"
+	@echo -e "\t\t${BOLD}install_build${RESET}"
+	@echo -e "\t\t${BOLD}install_test${RESET}"
+	@echo -e "\te.g. 'make amd64_build'"
+	@echo
+	@echo -e "\t${BOLD}<target>_<toolchain_stage>${RESET}: build <stage> docker image for a specific toolchain target."
+	@echo -e "\t${BOLD}save_<target>_<toolchain_stage>${RESET}: Save the <stage> docker image for a specific platform."
+	@echo -e "\t${BOLD}sh_<target>_<toolchain_stage>${RESET}: run a container using the <stage> docker image specified (debug purpose)."
+	@echo -e "\t${BOLD}clean_<target>_<toolchain_stage>${RESET}: Remove cache and docker image."
+	@echo
+	@echo -e "\tWith ${BOLD}<target>${RESET}:"
+	@echo -e "\t\t${BOLD}arm-linux-gnueabihf${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}armv8l-linux-gnueabihf${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}arm-linux-gnueabi${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}armeb-linux-gnueabihf${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}armeb-linux-gnueabi${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}aarch64-linux-gnu${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}aarch64${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}aarch64_be-linux-gnu${RESET} (linaro toolchain)"
+	@echo -e "\t\t${BOLD}aarch64be${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}mips32${RESET} (codespace toolchain)"
+	@echo -e "\t\t${BOLD}mips64${RESET} (codespace toolchain)"
+	@echo -e "\t\t${BOLD}mips32el${RESET} (codespace toolchain)"
+	@echo -e "\t\t${BOLD}mips64el${RESET} (codespace toolchain)"
+	@echo -e "\t\t${BOLD}ppc${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}ppc64${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}ppc64le${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}riscv32${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}riscv64${RESET} (bootlin toolchain)"
+	@echo -e "\t\t${BOLD}s390x${RESET} (bootlin toolchain)"
+	@echo
+	@echo -e "\tWith ${BOLD}<toolchain_stage>${RESET}:"
+	@echo -e "\t\t${BOLD}env${RESET}"
+	@echo -e "\t\t${BOLD}devel${RESET}"
+	@echo -e "\t\t${BOLD}build${RESET}"
+	@echo -e "\t\t${BOLD}test${RESET}"
+	@echo -e "\te.g. 'make aarch64_test'"
+	@echo
+	@echo -e "\t${BOLD}<VM>${RESET}: build the vagrant <VM> virtual machine."
+	@echo -e "\t${BOLD}clean_<VM>${RESET}: Remove virtual machine for the specified vm."
+	@echo
+	@echo -e "\t${BOLD}<VM>${RESET}:"
+	@echo -e "\t\t${BOLD}freebsd${RESET} (FreeBSD)"
+	@echo
+	@echo -e "\t${BOLD}clean${RESET}: Remove cache and ALL docker images."
+	@echo
+	@echo -e "\t${BOLD}NOCACHE=1${RESET}: use 'docker build --no-cache' when building container (default use cache)."
+	@echo
+	@echo -e "branch: $(BRANCH)"
+	@echo -e "sha1: $(SHA1)"
+
+# Need to add cmd_platform to PHONY otherwise target are ignored since they do not
+# contain recipe (using FORCE do not work here)
+.PHONY: all
+all: build
+
+# Delete all implicit rules to speed up makefile
+MAKEFLAGS += --no-builtin-rules
+.SUFFIXES:
+# Remove some rules from gmake that .SUFFIXES does not remove.
+SUFFIXES =
+# Keep all intermediate files
+# ToDo: try to remove it later
+.SECONDARY:
+
+# Docker image name prefix.
+IMAGE := ${PROJECT}
+
+ifdef NOCACHE
+DOCKER_BUILD_CMD := docker build --no-cache
+else
+DOCKER_BUILD_CMD := docker build
+endif
+
+DOCKER_RUN_CMD := docker run --rm --init --net=host
+
+# $* stem
+# $< first prerequist
+# $@ target name
+
+############
+## NATIVE ##
+############
+STAGES = env devel build test install_env install_devel install_build install_test
+
+targets_amd64 = $(addprefix amd64_, $(STAGES))
+.PHONY: $(targets_amd64)
+$(targets_amd64): amd64_%: docker/amd64/Dockerfile
+	#@docker image rm -f ${IMAGE}:amd64_$* 2>/dev/null
+	${DOCKER_BUILD_CMD} \
+ --tag ${IMAGE}:amd64_$* \
+ --target=$* \
+ -f $< \
+ ../..
+
+#$(info Create targets: save_amd64 $(addprefix save_amd64_, $(STAGES)) (debug).)
+save_targets_amd64 = $(addprefix save_amd64_, $(STAGES))
+.PHONY: $(save_targets_amd64)
+$(save_targets_amd64): save_amd64_%: cache/amd64/docker_%.tar
+cache/amd64/docker_%.tar: amd64_%
+	@rm -f $@
+	mkdir -p cache/amd64
+	docker save ${IMAGE}:amd64_$* -o $@
+
+#$(info Create targets: $(addprefix sh_amd64_, $(STAGES)) (debug).)
+sh_targets_amd64 = $(addprefix sh_amd64_, $(STAGES))
+.PHONY: $(sh_targets_amd64)
+$(sh_targets_amd64): sh_amd64_%: amd64_%
+	${DOCKER_RUN_CMD} -it --name ${IMAGE}_amd64_$* ${IMAGE}:amd64_$*
+
+#$(info Create targets: $(addprefix clean_amd64_, $(STAGES)).)
+clean_targets_amd64 = $(addprefix clean_amd64_, $(STAGES))
+.PHONY: clean_amd64 $(clean_targets_amd64)
+clean_amd64: $(clean_targets_amd64)
+$(clean_targets_amd64): clean_amd64_%:
+	docker image rm -f ${IMAGE}:amd64_$* 2>/dev/null
+	rm -f cache/amd64/docker_$*.tar
+
+
+###############
+## TOOLCHAIN ##
+###############
+TOOLCHAIN_TARGETS = \
+ aarch64 aarch64be \
+ arm-linux-gnueabihf armv8l-linux-gnueabihf arm-linux-gnueabi armeb-linux-gnueabihf armeb-linux-gnueabi \
+ aarch64-linux-gnu aarch64_be-linux-gnu \
+ mips32 mips32el mips64 mips64el \
+ ppc ppc64 ppc64le \
+ riscv32 riscv64 \
+ s390x
+TOOLCHAIN_STAGES = env devel build test
+define toolchain-stage-target =
+#$$(info STAGE: $1)
+#$$(info Create targets: toolchain_$1 $(addsuffix _$1, $(TOOLCHAIN_TARGETS)).)
+targets_toolchain_$1 = $(addsuffix _$1, $(TOOLCHAIN_TARGETS))
+.PHONY: toolchain_$1 $$(targets_toolchain_$1)
+toolchain_$1: $$(targets_toolchain_$1)
+$$(targets_toolchain_$1): %_$1: docker/toolchain/Dockerfile
+	#@docker image rm -f ${IMAGE}:$$*_$1 2>/dev/null
+	${DOCKER_BUILD_CMD} \
+ --tag ${IMAGE}:$$*_$1 \
+ --build-arg TARGET=$$* \
+ --target=$1 \
+ -f $$< \
+ ../..
+
+#$$(info Create targets: save_toolchain_$1 $(addprefix save_, $(addsuffix _$1, $(TOOLCHAIN_TARGETS))) (debug).)
+save_targets_toolchain_$1 = $(addprefix save_, $(addsuffix _$1, $(TOOLCHAIN_TARGETS)))
+.PHONY: save_toolchain_$1 $$(save_targets_toolchain_$1)
+save_toolchain_$1: $$(save_targets_toolchain_$1)
+$$(save_targets_toolchain_$1): save_%_$1: cache/%/docker_$1.tar
+cache/%/docker_$1.tar: %_$1
+	@rm -f $$@
+	mkdir -p cache/$$*
+	docker save ${IMAGE}:$$*_$1 -o $$@
+
+#$$(info Create targets: $(addprefix sh_, $(addsuffix _$1, $(TOOLCHAIN_TARGETS))) (debug).)
+sh_targets_toolchain_$1 = $(addprefix sh_, $(addsuffix _$1, $(TOOLCHAIN_TARGETS)))
+.PHONY: $$(sh_targets_toolchain_$1)
+$$(sh_targets_toolchain_$1): sh_%_$1: %_$1
+	${DOCKER_RUN_CMD} -it --name ${IMAGE}_$$*_$1 ${IMAGE}:$$*_$1
+
+#$$(info Create targets: clean_toolchain_$1 $(addprefix clean_, $(addsuffix _$1, $(TOOLCHAIN_TARGETS))).)
+clean_targets_toolchain_$1 = $(addprefix clean_, $(addsuffix _$1, $(TOOLCHAIN_TARGETS)))
+.PHONY: clean_toolchain_$1 $$(clean_targets_toolchain_$1)
+clean_toolchain_$1: $$(clean_targets_toolchain_$1)
+$$(clean_targets_toolchain_$1): clean_%_$1:
+	docker image rm -f ${IMAGE}:$$*_$1 2>/dev/null
+	rm -f cache/$$*/docker_$1.tar
+endef
+
+$(foreach stage,$(TOOLCHAIN_STAGES),$(eval $(call toolchain-stage-target,$(stage))))
+
+## MERGE ##
+.PHONY: clean_toolchain
+clean_toolchain: $(addprefix clean_toolchain_, $(TOOLCHAIN_STAGES))
+	-rmdir $(addprefix cache/, $(TOOLCHAIN_TARGETS))
+
+.PHONY: env devel build test
+env: amd64_env toolchain_env
+devel: amd64_devel toolchain_devel
+build: amd64_build toolchain_build
+test: amd64_test toolchain_test
+
+.PHONY: install_env install_devel install_build install_test
+install_env: amd64_install_env
+install_devel: amd64_install_devel
+install_build: amd64_install_build
+install_test: amd64_install_test
+
+#############
+## VAGRANT ##
+#############
+VMS = freebsd
+
+vms_targets = $(addsuffix _build, $(VMS))
+.PHONY: $(vms_targets)
+$(vms_targets): %_build: vagrant/%/Vagrantfile
+	@cd vagrant/$* && vagrant destroy -f
+	cd vagrant/$* && vagrant up
+
+clean_vms_targets = $(addprefix clean_, $(VMS))
+.PHONY: clean_vms $(clean_vms_targets)
+clean_vms: $(clean_vms_targets)
+$(clean_vms_targets): clean_%:
+	cd vagrant/$* && vagrant destroy -f
+	-rm -rf vagrant/$*/.vagrant
+
+###########
+## CLEAN ##
+###########
+.PHONY: clean
+clean: clean_amd64 clean_toolchain clean_vms
+	docker container prune -f
+	docker image prune -f
+	-rmdir cache
+
+.PHONY: distclean
+distclean: clean
+	-docker container rm -f $$(docker container ls -aq)
+	-docker image rm -f $$(docker image ls -aq)
+	-vagrant box remove -f generic/freebsd12
@@ -0,0 +1,40 @@
+## Makefile/Docker testing
+To test the build on various distro, we are using docker containers and a Makefile for orchestration.
+
+pros:
+* You are independent of third party CI runner config
+  (e.g. [github action virtual-environnments](https://github.com/actions/virtual-environments)).
+* You can run it locally on your linux system.
+* Most CI provide runners with docker and Makefile installed.
+
+cons:
+* Only GNU/Linux distro supported.
+
+### Usage
+To get the help simply type:
+```sh
+make
+```
+
+note: you can also use from top directory
+```sh
+make --directory=cmake/ci
+```
+
+### Example
+For example to test mips32 inside an container:
+```sh
+make mips32_test
+```
+
+### Docker layers
+Dockerfile is splitted in several stages.
+
+![docker](doc/docker.svg)
+
+
+## Makefile/Vagrant testing
+To test build for FreeBSD we are using Vagrant and VirtualBox box.
+
+This is similar to the docker stuff but use `vagrant` as `docker` cli and
+VirtuaBox to replace the docker engine daemon.
@@ -0,0 +1,64 @@
+@startdot
+digraph DockerDeps {
+  //rankdir=BT;
+  rankdir=TD;
+  node [shape=cylinder, style="rounded,filled", color=black, fillcolor=royalblue];
+  DISTRO_IMG [label="ubuntu:latest"];
+  PKG [label="packages\ne.g. cmake, g++", shape=box3d];
+  SRC [label="git repo", shape=folder];
+  SPL [label="sample", shape=folder];
+
+  subgraph clusterDockerfile {
+    ENV_IMG [label="cpu_features:amd64_env\nenv"];
+    DEVEL_IMG [label="cpu_features:amd64_devel\ndevel"];
+    BUILD_IMG [label="cpu_features:amd64_build\nbuild"];
+    TEST_IMG [label="cpu_features:amd64_test\ntest"];
+    INSTALL_ENV_IMG [label="cpu_features:amd64_install_env\ninstall_env"];
+    INSTALL_DEVEL_IMG [label="cpu_features:amd64_install_devel\ninstall_devel"];
+    INSTALL_BUILD_IMG [label="cpu_features:amd64_install_build\ninstall_build"];
+    INSTALL_TEST_IMG [label="cpu_features:amd64_install_test\ninstall_test"];
+
+    ENV_IMG -> DEVEL_IMG;
+    DEVEL_IMG -> BUILD_IMG;
+    BUILD_IMG -> TEST_IMG;
+
+    ENV_IMG -> INSTALL_ENV_IMG;
+    BUILD_IMG -> INSTALL_ENV_IMG [label="copy install", style="dashed"];
+    INSTALL_ENV_IMG -> INSTALL_DEVEL_IMG;
+    SPL -> INSTALL_DEVEL_IMG [label="copy", style="dashed"];
+    INSTALL_DEVEL_IMG -> INSTALL_BUILD_IMG;
+    INSTALL_BUILD_IMG -> INSTALL_TEST_IMG;
+
+    color=royalblue;
+    label = "docker/amd64/Dockerfile";
+  }
+  DISTRO_IMG -> ENV_IMG;
+  PKG -> ENV_IMG [label="install", style="dashed"];
+  SRC -> DEVEL_IMG [label="copy", style="dashed"];
+
+  subgraph clusterCache {
+    node [shape=note, style="rounded,filled", color=black, fillcolor=royalblue];
+    ENV_TAR [label="docker_amd64_env.tar"];
+    DEVEL_TAR [label="docker_amd64_devel.tar"];
+    BUILD_TAR [label="docker_amd64_build.tar"];
+    TEST_TAR [label="docker_amd64_test.tar"];
+    INSTALL_ENV_TAR [label="docker_amd64_install_env.tar"];
+    INSTALL_DEVEL_TAR [label="docker_amd64_install_devel.tar"];
+    INSTALL_BUILD_TAR [label="docker_amd64_install_build.tar"];
+    INSTALL_TEST_TAR [label="docker_amd64_install_test.tar"];
+
+    edge [color=red];
+    ENV_IMG -> ENV_TAR [label="make save_amd64_env"];
+    DEVEL_IMG -> DEVEL_TAR [label="make save_amd64_devel"];
+    BUILD_IMG -> BUILD_TAR [label="make save_amd64_build"];
+    TEST_IMG -> TEST_TAR [label="make save_amd64_test"];
+    INSTALL_ENV_IMG -> INSTALL_ENV_TAR [label="make save_amd64_install_env"];
+    INSTALL_DEVEL_IMG -> INSTALL_DEVEL_TAR [label="make save_amd64_install_devel"];
+    INSTALL_BUILD_IMG -> INSTALL_BUILD_TAR [label="make save_amd64_install_build"];
+    INSTALL_TEST_IMG -> INSTALL_TEST_TAR [label="make save_amd64_install_test"];
+
+    color=royalblue;
+    label = "cache/amd64/";
+  }
+}
+@enddot
@@ -0,0 +1,312 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Generated by graphviz version 2.49.2 (0)
+ -->
+<!-- Title: DockerDeps Pages: 1 -->
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+ viewBox="0.00 0.00 1904.00 899.75" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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+<title>DockerDeps</title>
+<polygon fill="white" stroke="transparent" points="-4,4 -4,-895.75 1900,-895.75 1900,4 -4,4"/>
+<g id="clust1" class="cluster">
+<title>clusterDockerfile</title>
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+<text text-anchor="middle" x="972" y="-797.55" font-family="Times,serif" font-size="14.00">docker/amd64/Dockerfile</text>
+</g>
+<g id="clust2" class="cluster">
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+</g>
+<!-- DISTRO_IMG -->
+<g id="node1" class="node">
+<title>DISTRO_IMG</title>
+<path fill="royalblue" stroke="black" d="M893.5,-887.48C893.5,-889.28 868.18,-890.75 837,-890.75 805.82,-890.75 780.5,-889.28 780.5,-887.48 780.5,-887.48 780.5,-858.02 780.5,-858.02 780.5,-856.22 805.82,-854.75 837,-854.75 868.18,-854.75 893.5,-856.22 893.5,-858.02 893.5,-858.02 893.5,-887.48 893.5,-887.48"/>
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+<text text-anchor="middle" x="837" y="-869.05" font-family="Times,serif" font-size="14.00">ubuntu:latest</text>
+</g>
+<!-- ENV_IMG -->
+<g id="node5" class="node">
+<title>ENV_IMG</title>
+<path fill="royalblue" stroke="black" d="M1005,-777.1C1005,-779.74 961.52,-781.88 908,-781.88 854.48,-781.88 811,-779.74 811,-777.1 811,-777.1 811,-734.15 811,-734.15 811,-731.51 854.48,-729.37 908,-729.37 961.52,-729.37 1005,-731.51 1005,-734.15 1005,-734.15 1005,-777.1 1005,-777.1"/>
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+<text text-anchor="middle" x="908" y="-744.42" font-family="Times,serif" font-size="14.00">env</text>
+</g>
+<!-- DISTRO_IMG&#45;&gt;ENV_IMG -->
+<g id="edge10" class="edge">
+<title>DISTRO_IMG&#45;&gt;ENV_IMG</title>
+<path fill="none" stroke="black" d="M847.78,-854.26C858.17,-837.42 874.16,-811.49 887.05,-790.59"/>
+<polygon fill="black" stroke="black" points="890.09,-792.33 892.37,-781.98 884.14,-788.65 890.09,-792.33"/>
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+<!-- PKG -->
+<g id="node2" class="node">
+<title>PKG</title>
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+<text text-anchor="middle" x="979" y="-861.55" font-family="Times,serif" font-size="14.00">e.g. cmake, g++</text>
+</g>
+<!-- PKG&#45;&gt;ENV_IMG -->
+<g id="edge11" class="edge">
+<title>PKG&#45;&gt;ENV_IMG</title>
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+<!-- SRC -->
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+</g>
+<!-- DEVEL_IMG&#45;&gt;DEVEL_TAR -->
+<g id="edge14" class="edge">
+<title>DEVEL_IMG&#45;&gt;DEVEL_TAR</title>
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+</g>
+<!-- BUILD_IMG&#45;&gt;TEST_IMG -->
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+</g>
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+<g id="edge8" class="edge">
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+<g id="node12" class="node">
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@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -ex
+
+rm -f ./*.svg ./*.png
+for i in *.dot; do
+  plantuml -Tsvg "$i";
+done
@@ -0,0 +1,48 @@
+# Create a virtual environment with all tools installed
+# ref: https://hub.docker.com/_/ubuntu
+FROM ubuntu:latest AS env
+LABEL maintainer="corentinl@google.com"
+# Install system build dependencies
+ENV PATH=/usr/local/bin:$PATH
+RUN apt-get update -qq \
+&& DEBIAN_FRONTEND=noninteractive apt-get install -yq git wget libssl-dev build-essential \
+ ninja-build python3 pkgconf libglib2.0-dev \
+&& apt-get clean \
+&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+ENTRYPOINT ["/usr/bin/bash", "-c"]
+CMD ["/usr/bin/bash"]
+
+# Install CMake 3.21.3
+RUN wget "https://cmake.org/files/v3.21/cmake-3.21.3-linux-x86_64.sh" \
+&& chmod a+x cmake-3.21.3-linux-x86_64.sh \
+&& ./cmake-3.21.3-linux-x86_64.sh --prefix=/usr/local/ --skip-license \
+&& rm cmake-3.21.3-linux-x86_64.sh
+
+FROM env AS devel
+WORKDIR /home/project
+COPY . .
+
+FROM devel AS build
+RUN cmake -version
+RUN cmake -S. -Bbuild
+RUN cmake --build build --target all -v
+RUN cmake --build build --target install -v
+
+FROM build AS test
+ENV CTEST_OUTPUT_ON_FAILURE=1
+RUN cmake --build build --target test -v
+
+# Test install rules
+FROM env AS install_env
+COPY --from=build /usr/local /usr/local/
+
+FROM install_env AS install_devel
+WORKDIR /home/sample
+COPY cmake/ci/sample .
+
+FROM install_devel AS install_build
+RUN cmake -S. -Bbuild
+RUN cmake --build build --target all -v
+
+FROM install_build AS install_test
+RUN cmake --build build --target test
@@ -0,0 +1,34 @@
+# Create a virtual environment with all tools installed
+# ref: https://hub.docker.com/_/ubuntu
+FROM ubuntu:latest AS env
+LABEL maintainer="corentinl@google.com"
+# Install system build dependencies
+ENV PATH=/usr/local/bin:$PATH
+RUN apt-get update -qq \
+&& DEBIAN_FRONTEND=noninteractive apt-get install -yq git wget libssl-dev build-essential \
+ ninja-build python3 pkgconf libglib2.0-dev \
+&& apt-get clean \
+&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+ENTRYPOINT ["/usr/bin/bash", "-c"]
+CMD ["/usr/bin/bash"]
+
+# Install CMake 3.21.3
+RUN wget "https://cmake.org/files/v3.21/cmake-3.21.3-linux-x86_64.sh" \
+&& chmod a+x cmake-3.21.3-linux-x86_64.sh \
+&& ./cmake-3.21.3-linux-x86_64.sh --prefix=/usr/local/ --skip-license \
+&& rm cmake-3.21.3-linux-x86_64.sh
+
+FROM env AS devel
+WORKDIR /home/project
+COPY . .
+
+ARG TARGET
+ENV TARGET ${TARGET:-unknown}
+
+FROM devel AS build
+RUN cmake -version
+RUN ./scripts/run_integration.sh build
+
+FROM build AS test
+RUN ./scripts/run_integration.sh qemu
+RUN ./scripts/run_integration.sh test
@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.15)
+project(Sample VERSION 1.0.0 LANGUAGES CXX)
+
+include(CTest)
+find_package(CpuFeatures REQUIRED)
+
+add_executable(sample main.cpp)
+target_compile_features(sample PUBLIC cxx_std_11)
+set_target_properties(sample PROPERTIES
+  CXX_STANDARD 11
+  CXX_STANDARD_REQUIRED ON
+  VERSION ${PROJECT_VERSION})
+target_link_libraries(sample PRIVATE CpuFeatures::cpu_features)
+
+if(BUILD_TESTING)
+  add_test(NAME sample_test COMMAND sample)
+endif()
+
+include(GNUInstallDirs)
+install(TARGETS sample
+  EXPORT SampleTargets
+  DESTINATION ${CMAKE_INSTALL_BIN_DIR})
@@ -0,0 +1,11 @@
+#include <iostream>
+
+#include "cpuinfo_x86.h"
+
+using namespace cpu_features;
+
+int main(int /*argc*/, char** /*argv*/) {
+  static const X86Features features = GetX86Info().features;
+  std::cout << std::endl;
+  return 0;
+}
@@ -0,0 +1,107 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# All Vagrant configuration is done below. The "2" in Vagrant.configure
+# configures the configuration version (we support older styles for
+# backwards compatibility). Please don't change it unless you know what
+# you're doing.
+Vagrant.configure("2") do |config|
+  # The most common configuration options are documented and commented below.
+  # For a complete reference, please see the online documentation at
+  # https://docs.vagrantup.com.
+
+  # Every Vagrant development environment requires a box. You can search for
+  # boxes at https://vagrantcloud.com/search.
+  config.vm.guest = :freebsd
+  config.vm.box = "generic/freebsd12"
+
+  config.ssh.shell = "sh"
+
+  # Disable automatic box update checking. If you disable this, then
+  # boxes will only be checked for updates when the user runs
+  # `vagrant box outdated`. This is not recommended.
+  # config.vm.box_check_update = false
+
+  # Create a forwarded port mapping which allows access to a specific port
+  # within the machine from a port on the host machine. In the example below,
+  # accessing "localhost:8080" will access port 80 on the guest machine.
+  # NOTE: This will enable public access to the opened port
+  # config.vm.network "forwarded_port", guest: 80, host: 8080
+
+  # Create a forwarded port mapping which allows access to a specific port
+  # within the machine from a port on the host machine and only allow access
+  # via 127.0.0.1 to disable public access
+  # config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
+
+  # Create a private network, which allows host-only access to the machine
+  # using a specific IP.
+  # config.vm.network "private_network", ip: "192.168.33.10"
+
+  # Create a public network, which generally matched to bridged network.
+  # Bridged networks make the machine appear as another physical device on
+  # your network.
+  # config.vm.network "public_network"
+
+  # Share an additional folder to the guest VM. The first argument is
+  # the path on the host to the actual folder. The second argument is
+  # the path on the guest to mount the folder. And the optional third
+  # argument is a set of non-required options.
+  #config.vm.synced_folder "../../..", "/home/vagrant/project"
+  config.vm.synced_folder ".", "/vagrant", id: "vagrant-root", disabled: true
+
+  config.vm.provision "file", source: "../../../../CMakeLists.txt", destination: "$HOME/project/"
+  config.vm.provision "file", source: "../../../../cmake", destination: "$HOME/project/"
+  config.vm.provision "file", source: "../../../../include", destination: "$HOME/project/"
+  config.vm.provision "file", source: "../../../../src", destination: "$HOME/project/"
+  config.vm.provision "file", source: "../../../../test", destination: "$HOME/project/"
+
+  # Provider-specific configuration so you can fine-tune various
+  # backing providers for Vagrant. These expose provider-specific options.
+  # Example for VirtualBox:
+  #
+  # config.vm.provider "virtualbox" do |vb|
+  #   # Display the VirtualBox GUI when booting the machine
+  #   vb.gui = true
+  #
+  #   # Customize the amount of memory on the VM:
+  #   vb.memory = "1024"
+  # end
+  #
+  # View the documentation for the provider you are using for more
+  # information on available options.
+
+  # Enable provisioning with a shell script. Additional provisioners such as
+  # Ansible, Chef, Docker, Puppet and Salt are also available. Please see the
+  # documentation for more information about their specific syntax and use.
+  # note: clang installed by default
+  config.vm.provision "env", type: "shell", inline:<<-SHELL
+  set -x
+  pkg update -f
+  pkg install -y git cmake
+  SHELL
+  config.vm.provision "devel", type: "shell", inline:<<-SHELL
+  set -x
+  cd project
+  ls
+  SHELL
+  config.vm.provision "configure", type: "shell", inline:<<-SHELL
+  set -x
+  cd project
+  cmake -S. -Bbuild -DBUILD_TESTING=ON
+  SHELL
+  config.vm.provision "build", type: "shell", inline:<<-SHELL
+  set -x
+  cd project
+  cmake --build build -v
+  SHELL
+  config.vm.provision "test", type: "shell", inline:<<-SHELL
+  set -x
+  cd project
+  cmake --build build --target test -v
+  SHELL
+  config.vm.provision "test", type: "shell", inline:<<-SHELL
+  set -x
+  cd project
+  cmake --build build --target install -v
+  SHELL
+end
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 2.8.2)
+
+project(googletest-download NONE)
+
+include(ExternalProject)
+ExternalProject_Add(googletest
+  GIT_REPOSITORY    https://github.com/google/googletest.git
+  GIT_TAG           main
+  SOURCE_DIR        "${CMAKE_BINARY_DIR}/googletest-src"
+  BINARY_DIR        "${CMAKE_BINARY_DIR}/googletest-build"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND     ""
+  INSTALL_COMMAND   ""
+  TEST_COMMAND      ""
+)
@@ -0,0 +1,54 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_COMMON_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_COMMON_H_
+
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef enum {
+  CPU_FEATURE_CACHE_NULL = 0,
+  CPU_FEATURE_CACHE_DATA = 1,
+  CPU_FEATURE_CACHE_INSTRUCTION = 2,
+  CPU_FEATURE_CACHE_UNIFIED = 3,
+  CPU_FEATURE_CACHE_TLB = 4,
+  CPU_FEATURE_CACHE_DTLB = 5,
+  CPU_FEATURE_CACHE_STLB = 6,
+  CPU_FEATURE_CACHE_PREFETCH = 7
+} CacheType;
+
+typedef struct {
+  int level;
+  CacheType cache_type;
+  int cache_size;    // Cache size in bytes
+  int ways;          // Associativity, 0 undefined, 0xFF fully associative
+  int line_size;     // Cache line size in bytes
+  int tlb_entries;   // number of entries for TLB
+  int partitioning;  // number of lines per sector
+} CacheLevelInfo;
+
+// Increase this value if more cache levels are needed.
+#ifndef CPU_FEATURES_MAX_CACHE_LEVEL
+#define CPU_FEATURES_MAX_CACHE_LEVEL 10
+#endif
+typedef struct {
+  int size;
+  CacheLevelInfo levels[CPU_FEATURES_MAX_CACHE_LEVEL];
+} CacheInfo;
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_COMMON_H_
@@ -0,0 +1,388 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPU_FEATURES_MACROS_H_
+#define CPU_FEATURES_INCLUDE_CPU_FEATURES_MACROS_H_
+
+////////////////////////////////////////////////////////////////////////////////
+// Architectures
+////////////////////////////////////////////////////////////////////////////////
+
+#if defined(__pnacl__) || defined(__CLR_VER)
+#define CPU_FEATURES_ARCH_VM
+#endif
+
+#if (defined(_M_IX86) || defined(__i386__)) && !defined(CPU_FEATURES_ARCH_VM)
+#define CPU_FEATURES_ARCH_X86_32
+#endif
+
+#if (defined(_M_X64) || defined(__x86_64__)) && !defined(CPU_FEATURES_ARCH_VM)
+#define CPU_FEATURES_ARCH_X86_64
+#endif
+
+#if defined(CPU_FEATURES_ARCH_X86_32) || defined(CPU_FEATURES_ARCH_X86_64)
+#define CPU_FEATURES_ARCH_X86
+#endif
+
+#if (defined(__arm__) || defined(_M_ARM))
+#define CPU_FEATURES_ARCH_ARM
+#endif
+
+#if (defined(__aarch64__) || defined(_M_ARM64))
+#define CPU_FEATURES_ARCH_AARCH64
+#endif
+
+#if (defined(CPU_FEATURES_ARCH_AARCH64) || defined(CPU_FEATURES_ARCH_ARM))
+#define CPU_FEATURES_ARCH_ANY_ARM
+#endif
+
+#if defined(__mips64)
+#define CPU_FEATURES_ARCH_MIPS64
+#endif
+
+#if defined(__mips__) && !defined(__mips64)  // mips64 also declares __mips__
+#define CPU_FEATURES_ARCH_MIPS32
+#endif
+
+#if defined(CPU_FEATURES_ARCH_MIPS32) || defined(CPU_FEATURES_ARCH_MIPS64)
+#define CPU_FEATURES_ARCH_MIPS
+#endif
+
+#if defined(__powerpc__)
+#define CPU_FEATURES_ARCH_PPC
+#endif
+
+#if defined(__s390x__)
+#define CPU_FEATURES_ARCH_S390X
+#endif
+
+#if defined(__riscv)
+#define CPU_FEATURES_ARCH_RISCV
+#endif
+
+#if defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 32
+#define CPU_FEATURES_ARCH_RISCV32
+#endif
+
+#if defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64
+#define CPU_FEATURES_ARCH_RISCV64
+#endif
+
+#if defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 128
+#define CPU_FEATURES_ARCH_RISCV128
+#endif
+
+#if defined(__loongarch64)
+#define CPU_FEATURES_ARCH_LOONGARCH
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Os
+////////////////////////////////////////////////////////////////////////////////
+
+#if (defined(__freebsd__) || defined(__FreeBSD__))
+#define CPU_FEATURES_OS_FREEBSD
+#endif
+
+#if defined(__ANDROID__)
+#define CPU_FEATURES_OS_ANDROID
+#endif
+
+#if defined(__linux__) && !defined(CPU_FEATURES_OS_FREEBSD) && \
+    !defined(CPU_FEATURES_OS_ANDROID)
+#define CPU_FEATURES_OS_LINUX
+#endif
+
+#if (defined(_WIN64) || defined(_WIN32))
+#define CPU_FEATURES_OS_WINDOWS
+#endif
+
+#if (defined(__apple__) || defined(__APPLE__) || defined(__MACH__))
+// From https://stackoverflow.com/a/49560690
+#include "TargetConditionals.h"
+#if defined(TARGET_OS_OSX)
+#define CPU_FEATURES_OS_MACOS
+#endif
+#if defined(TARGET_OS_IPHONE)
+// This is set for any non-Mac Apple products (IOS, TV, WATCH)
+#define CPU_FEATURES_OS_IPHONE
+#endif
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Compilers
+////////////////////////////////////////////////////////////////////////////////
+
+#if defined(__clang__)
+#define CPU_FEATURES_COMPILER_CLANG
+#endif
+
+#if defined(__GNUC__) && !defined(__clang__)
+#define CPU_FEATURES_COMPILER_GCC
+#endif
+
+#if defined(_MSC_VER)
+#define CPU_FEATURES_COMPILER_MSC
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Cpp
+////////////////////////////////////////////////////////////////////////////////
+
+#if defined(__cplusplus)
+#define CPU_FEATURES_START_CPP_NAMESPACE \
+  namespace cpu_features {               \
+  extern "C" {
+#define CPU_FEATURES_END_CPP_NAMESPACE \
+  }                                    \
+  }
+#else
+#define CPU_FEATURES_START_CPP_NAMESPACE
+#define CPU_FEATURES_END_CPP_NAMESPACE
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Compiler flags
+////////////////////////////////////////////////////////////////////////////////
+
+// Use the following to check if a feature is known to be available at
+// compile time. See README.md for an example.
+#if defined(CPU_FEATURES_ARCH_X86)
+
+#if defined(__AES__)
+#define CPU_FEATURES_COMPILED_X86_AES 1
+#else
+#define CPU_FEATURES_COMPILED_X86_AES 0
+#endif  //  defined(__AES__)
+
+#if defined(__F16C__)
+#define CPU_FEATURES_COMPILED_X86_F16C 1
+#else
+#define CPU_FEATURES_COMPILED_X86_F16C 0
+#endif  //  defined(__F16C__)
+
+#if defined(__BMI__)
+#define CPU_FEATURES_COMPILED_X86_BMI 1
+#else
+#define CPU_FEATURES_COMPILED_X86_BMI 0
+#endif  //  defined(__BMI__)
+
+#if defined(__BMI2__)
+#define CPU_FEATURES_COMPILED_X86_BMI2 1
+#else
+#define CPU_FEATURES_COMPILED_X86_BMI2 0
+#endif  //  defined(__BMI2__)
+
+#if (defined(__SSE__) || (_M_IX86_FP >= 1))
+#define CPU_FEATURES_COMPILED_X86_SSE 1
+#else
+#define CPU_FEATURES_COMPILED_X86_SSE 0
+#endif
+
+#if (defined(__SSE2__) || (_M_IX86_FP >= 2))
+#define CPU_FEATURES_COMPILED_X86_SSE2 1
+#else
+#define CPU_FEATURES_COMPILED_X86_SSE2 0
+#endif
+
+#if defined(__SSE3__)
+#define CPU_FEATURES_COMPILED_X86_SSE3 1
+#else
+#define CPU_FEATURES_COMPILED_X86_SSE3 0
+#endif  //  defined(__SSE3__)
+
+#if defined(__SSSE3__)
+#define CPU_FEATURES_COMPILED_X86_SSSE3 1
+#else
+#define CPU_FEATURES_COMPILED_X86_SSSE3 0
+#endif  //  defined(__SSSE3__)
+
+#if defined(__SSE4_1__)
+#define CPU_FEATURES_COMPILED_X86_SSE4_1 1
+#else
+#define CPU_FEATURES_COMPILED_X86_SSE4_1 0
+#endif  //  defined(__SSE4_1__)
+
+#if defined(__SSE4_2__)
+#define CPU_FEATURES_COMPILED_X86_SSE4_2 1
+#else
+#define CPU_FEATURES_COMPILED_X86_SSE4_2 0
+#endif  //  defined(__SSE4_2__)
+
+#if defined(__AVX__)
+#define CPU_FEATURES_COMPILED_X86_AVX 1
+#else
+#define CPU_FEATURES_COMPILED_X86_AVX 0
+#endif  //  defined(__AVX__)
+
+#if defined(__AVX2__)
+#define CPU_FEATURES_COMPILED_X86_AVX2 1
+#else
+#define CPU_FEATURES_COMPILED_X86_AVX2 0
+#endif  //  defined(__AVX2__)
+
+#endif  // defined(CPU_FEATURES_ARCH_X86)
+
+#if defined(CPU_FEATURES_ARCH_ANY_ARM)
+#if defined(__ARM_NEON__)
+#define CPU_FEATURES_COMPILED_ANY_ARM_NEON 1
+#else
+#define CPU_FEATURES_COMPILED_ANY_ARM_NEON 0
+#endif  //  defined(__ARM_NEON__)
+#endif  //  defined(CPU_FEATURES_ARCH_ANY_ARM)
+
+#if defined(CPU_FEATURES_ARCH_MIPS)
+#if defined(__mips_msa)
+#define CPU_FEATURES_COMPILED_MIPS_MSA 1
+#else
+#define CPU_FEATURES_COMPILED_MIPS_MSA 0
+#endif  //  defined(__mips_msa)
+#if defined(__mips3d)
+#define CPU_FEATURES_COMPILED_MIPS_MIPS3D 1
+#else
+#define CPU_FEATURES_COMPILED_MIPS_MIPS3D 0
+#endif
+#endif  //  defined(CPU_FEATURES_ARCH_MIPS)
+
+#if defined(CPU_FEATURES_ARCH_RISCV)
+#if defined(__riscv_e)
+#define CPU_FEATURES_COMPILED_RISCV_E 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_E 0
+#endif
+#if defined(__riscv_i)
+#define CPU_FEATURES_COMPILED_RISCV_I 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_I 0
+#endif
+#if defined(__riscv_m)
+#define CPU_FEATURES_COMPILED_RISCV_M 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_M 0
+#endif
+#if defined(__riscv_a)
+#define CPU_FEATURES_COMPILED_RISCV_A 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_A 0
+#endif
+#if defined(__riscv_f)
+#define CPU_FEATURES_COMPILED_RISCV_F 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_F 0
+#endif
+#if defined(__riscv_d)
+#define CPU_FEATURES_COMPILED_RISCV_D 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_D 0
+#endif
+#if defined(__riscv_q)
+#define CPU_FEATURES_COMPILED_RISCV_Q 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_Q 0
+#endif
+#if defined(__riscv_c)
+#define CPU_FEATURES_COMPILED_RISCV_C 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_C 0
+#endif
+#if defined(__riscv_v)
+#define CPU_FEATURES_COMPILED_RISCV_V 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_V 0
+#endif
+#if defined(__riscv_zba)
+#define CPU_FEATURES_COMPILED_RISCV_ZBA 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZBA 0
+#endif
+#if defined(__riscv_zbb)
+#define CPU_FEATURES_COMPILED_RISCV_ZBB 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZBB 0
+#endif
+#if defined(__riscv_zbc)
+#define CPU_FEATURES_COMPILED_RISCV_ZBC 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZBC 0
+#endif
+#if defined(__riscv_zbs)
+#define CPU_FEATURES_COMPILED_RISCV_ZBS 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZBS 0
+#endif
+#if defined(__riscv_zfh)
+#define CPU_FEATURES_COMPILED_RISCV_ZFH 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZFH 0
+#endif
+#if defined(__riscv_zfhmin)
+#define CPU_FEATURES_COMPILED_RISCV_ZFHMIN 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZFHMIN 0
+#endif
+#if defined(__riscv_zknd)
+#define CPU_FEATURES_COMPILED_RISCV_ZKND 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZKND 0
+#endif
+#if defined(__riscv_zkne)
+#define CPU_FEATURES_COMPILED_RISCV_ZKNE 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZKNE 0
+#endif
+#if defined(__riscv_zknh)
+#define CPU_FEATURES_COMPILED_RISCV_ZKNH 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZKNH 0
+#endif
+#if defined(__riscv_zksed)
+#define CPU_FEATURES_COMPILED_RISCV_ZKSED 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZKSED 0
+#endif
+#if defined(__riscv_zksh)
+#define CPU_FEATURES_COMPILED_RISCV_ZKSH 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZKSH 0
+#endif
+#if defined(__riscv_zkr)
+#define CPU_FEATURES_COMPILED_RISCV_ZKR 1
+#else
+#define CPU_FEATURES_COMPILED_RISCV_ZKR 0
+#endif
+#endif  //  defined(CPU_FEATURES_ARCH_RISCV)
+
+////////////////////////////////////////////////////////////////////////////////
+// Utils
+////////////////////////////////////////////////////////////////////////////////
+
+// Communicates to the compiler that the block is unreachable
+#if defined(CPU_FEATURES_COMPILER_CLANG) || defined(CPU_FEATURES_COMPILER_GCC)
+#define CPU_FEATURES_UNREACHABLE() __builtin_unreachable()
+#elif defined(CPU_FEATURES_COMPILER_MSC)
+#define CPU_FEATURES_UNREACHABLE() __assume(0)
+#else
+#define CPU_FEATURES_UNREACHABLE()
+#endif
+
+// Communicates to the compiler that the function is now deprecated
+#if defined(CPU_FEATURES_COMPILER_CLANG) || defined(CPU_FEATURES_COMPILER_GCC)
+#define CPU_FEATURES_DEPRECATED(message) __attribute__((deprecated(message)))
+#elif defined(CPU_FEATURES_COMPILER_MSC)
+#define CPU_FEATURES_DEPRECATED(message) __declspec(deprecated(message))
+#else
+#define CPU_FEATURES_DEPRECATED(message)
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPU_FEATURES_MACROS_H_
@@ -0,0 +1,301 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// A note on Windows AArch64 implementation
+////////////////////////////////////////////////////////////////////////////////
+
+// Getting cpu info via EL1 system registers is not possible, so we delegate it
+// to the Windows API (i.e., IsProcessorFeaturePresent and GetNativeSystemInfo).
+// The `implementer`, `variant` and `part` fields of the `Aarch64Info` struct
+// are not used, so they are set to 0. To get `revision` we use
+// `wProcessorRevision` from `SYSTEM_INFO`.
+//
+// Cryptographic Extension:
+// -----------------------------------------------------------------------------
+// According to documentation Arm Architecture Reference Manual for
+// A-profile architecture. A2.3 The Armv8 Cryptographic Extension. The Armv8.0
+// Cryptographic Extension provides instructions for the acceleration of
+// encryption and decryption, and includes the following features: FEAT_AES,
+// FEAT_PMULL, FEAT_SHA1, FEAT_SHA256.
+// see: https://developer.arm.com/documentation/ddi0487/latest
+//
+// We use `PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE` to detect all Armv8.0 crypto
+// features. This value reports all features or nothing, so even if you only
+// have support FEAT_AES and FEAT_PMULL, it will still return false.
+//
+// From Armv8.2, an implementation of the Armv8.0 Cryptographic Extension can
+// include either or both of:
+//
+// • The AES functionality, including support for multiplication of 64-bit
+//   polynomials. The ID_AA64ISAR0_EL1.AES field indicates whether this
+//   functionality is supported.
+// • The SHA1 and SHA2-256 functionality. The ID_AA64ISAR0_EL1.{SHA2, SHA1}
+//   fields indicate whether this functionality is supported.
+//
+// ID_AA64ISAR0_EL1.AES, bits [7:4]:
+// Indicates support for AES instructions in AArch64 state. Defined values are:
+// - 0b0000 No AES instructions implemented.
+// - 0b0001 AESE, AESD, AESMC, and AESIMC instructions implemented.
+// - 0b0010 As for 0b0001, plus PMULL/PMULL2 instructions operating on 64-bit
+//   data quantities.
+//
+// FEAT_AES implements the functionality identified by the value 0b0001.
+// FEAT_PMULL implements the functionality identified by the value 0b0010.
+// From Armv8, the permitted values are 0b0000 and 0b0010.
+//
+// ID_AA64ISAR0_EL1.SHA1, bits [11:8]:
+// Indicates support for SHA1 instructions in AArch64 state. Defined values are:
+// - 0b0000 No SHA1 instructions implemented.
+// - 0b0001 SHA1C, SHA1P, SHA1M, SHA1H, SHA1SU0, and SHA1SU1 instructions
+//   implemented.
+//
+// FEAT_SHA1 implements the functionality identified by the value 0b0001.
+// From Armv8, the permitted values are 0b0000 and 0b0001.
+// If the value of ID_AA64ISAR0_EL1.SHA2 is 0b0000, this field must have the
+// value 0b0000.
+//
+// ID_AA64ISAR0_EL1.SHA2, bits [15:12]:
+// Indicates support for SHA2 instructions in AArch64 state. Defined values are:
+// - 0b0000 No SHA2 instructions implemented.
+// - 0b0001 Implements instructions: SHA256H, SHA256H2, SHA256SU0, and
+//   SHA256SU1.
+// - 0b0010 Implements instructions:
+//          • SHA256H, SHA256H2, SHA256SU0, and SHA256SU1.
+//          • SHA512H, SHA512H2, SHA512SU0, and SHA512SU1.
+//
+// FEAT_SHA256 implements the functionality identified by the value 0b0001.
+// FEAT_SHA512 implements the functionality identified by the value 0b0010.
+//
+// In Armv8, the permitted values are 0b0000 and 0b0001.
+// From Armv8.2, the permitted values are 0b0000, 0b0001, and 0b0010.
+//
+// If the value of ID_AA64ISAR0_EL1.SHA1 is 0b0000, this field must have the
+// value 0b0000.
+//
+// If the value of this field is 0b0010, ID_AA64ISAR0_EL1.SHA3
+// must have the value 0b0001.
+//
+// Other cryptographic features that we cannot detect such as sha512, sha3, sm3,
+// sm4, sveaes, svepmull, svesha3, svesm4 we set to 0.
+//
+// FP/SIMD:
+// -----------------------------------------------------------------------------
+// FP/SIMD must be implemented on all Armv8.0 implementations, but
+// implementations targeting specialized markets may support the following
+// combinations:
+//
+// • No NEON or floating-point.
+// • Full floating-point and SIMD support with exception trapping.
+// • Full floating-point and SIMD support without exception trapping.
+//
+// ref:
+// https://developer.arm.com/documentation/den0024/a/AArch64-Floating-point-and-NEON
+//
+// So, we use `PF_ARM_VFP_32_REGISTERS_AVAILABLE`,
+// `PF_ARM_NEON_INSTRUCTIONS_AVAILABLE` to detect `asimd` and `fp`
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_AARCH64_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_AARCH64_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  int fp : 1;          // Floating-point.
+  int asimd : 1;       // Advanced SIMD.
+  int evtstrm : 1;     // Generic timer generated events.
+  int aes : 1;         // Hardware-accelerated Advanced Encryption Standard.
+  int pmull : 1;       // Polynomial multiply long.
+  int sha1 : 1;        // Hardware-accelerated SHA1.
+  int sha2 : 1;        // Hardware-accelerated SHA2-256.
+  int crc32 : 1;       // Hardware-accelerated CRC-32.
+  int atomics : 1;     // Armv8.1 atomic instructions.
+  int fphp : 1;        // Half-precision floating point support.
+  int asimdhp : 1;     // Advanced SIMD half-precision support.
+  int cpuid : 1;       // Access to certain ID registers.
+  int asimdrdm : 1;    // Rounding Double Multiply Accumulate/Subtract.
+  int jscvt : 1;       // Support for JavaScript conversion.
+  int fcma : 1;        // Floating point complex numbers.
+  int lrcpc : 1;       // Support for weaker release consistency.
+  int dcpop : 1;       // Data persistence writeback.
+  int sha3 : 1;        // Hardware-accelerated SHA3.
+  int sm3 : 1;         // Hardware-accelerated SM3.
+  int sm4 : 1;         // Hardware-accelerated SM4.
+  int asimddp : 1;     // Dot product instruction.
+  int sha512 : 1;      // Hardware-accelerated SHA512.
+  int sve : 1;         // Scalable Vector Extension.
+  int asimdfhm : 1;    // Additional half-precision instructions.
+  int dit : 1;         // Data independent timing.
+  int uscat : 1;       // Unaligned atomics support.
+  int ilrcpc : 1;      // Additional support for weaker release consistency.
+  int flagm : 1;       // Flag manipulation instructions.
+  int ssbs : 1;        // Speculative Store Bypass Safe PSTATE bit.
+  int sb : 1;          // Speculation barrier.
+  int paca : 1;        // Address authentication.
+  int pacg : 1;        // Generic authentication.
+  int dcpodp : 1;      // Data cache clean to point of persistence.
+  int sve2 : 1;        // Scalable Vector Extension (version 2).
+  int sveaes : 1;      // SVE AES instructions.
+  int svepmull : 1;    // SVE polynomial multiply long instructions.
+  int svebitperm : 1;  // SVE bit permute instructions.
+  int svesha3 : 1;     // SVE SHA3 instructions.
+  int svesm4 : 1;      // SVE SM4 instructions.
+  int flagm2 : 1;      // Additional flag manipulation instructions.
+  int frint : 1;       // Floating point to integer rounding.
+  int svei8mm : 1;     // SVE Int8 matrix multiplication instructions.
+  int svef32mm : 1;    // SVE FP32 matrix multiplication instruction.
+  int svef64mm : 1;    // SVE FP64 matrix multiplication instructions.
+  int svebf16 : 1;     // SVE BFloat16 instructions.
+  int i8mm : 1;        // Int8 matrix multiplication instructions.
+  int bf16 : 1;        // BFloat16 instructions.
+  int dgh : 1;         // Data Gathering Hint instruction.
+  int rng : 1;         // True random number generator support.
+  int bti : 1;         // Branch target identification.
+  int mte : 1;         // Memory tagging extension.
+  int ecv : 1;         // Enhanced counter virtualization.
+  int afp : 1;         // Alternate floating-point behaviour.
+  int rpres : 1;       // 12-bit reciprocal (square root) estimate precision.
+  int mte3 : 1;        // MTE asymmetric fault handling.
+  int sme : 1;         // Scalable Matrix Extension.
+  int smei16i64 : 1;   // 16-bit to 64-bit integer widening outer product.
+  int smef64f64 : 1;   // FP64 to FP64 outer product.
+  int smei8i32 : 1;    // 8-bit to 32-bit integer widening outer product.
+  int smef16f32 : 1;   // FP16 to FP32 outer product.
+  int smeb16f32 : 1;   // BFloat16 to FP32 outper product.
+  int smef32f32 : 1;   // FP32 to FP32 outer product.
+  int smefa64 : 1;     // Full A64 support for SME in streaming mode.
+  int wfxt : 1;        // WFE and WFI with timeout.
+  int ebf16 : 1;       // Extended BFloat16 instructions.
+  int sveebf16 : 1;    // SVE BFloat16 instructions.
+  int cssc : 1;        // Common short sequence compression instructions.
+  int rprfm : 1;       // Range Prefetch Memory hint instruction.
+  int sve2p1 : 1;      // Scalable Vector Extension (version 2.1).
+  int sme2 : 1;        // Scalable Matrix Extension (version 2).
+  int sme2p1 : 1;      // Scalable Matrix Extension (version 2.1).
+  int smei16i32 : 1;   // 16-bit to 64-bit integer widening outer product.
+  int smebi32i32 : 1;  // 1-bit binary to 32-bit integer outer product.
+  int smeb16b16 : 1;   // SME2.1 BFloat16 instructions.
+  int smef16f16 : 1;   // FP16 to FP16 outer product.
+
+  // Make sure to update Aarch64FeaturesEnum below if you add a field here.
+} Aarch64Features;
+
+typedef struct {
+  Aarch64Features features;
+  int implementer;  // We set 0 for Windows.
+  int variant;      // We set 0 for Windows.
+  int part;         // We set 0 for Windows.
+  int revision;     // We use GetNativeSystemInfo to get processor revision for
+                    // Windows.
+} Aarch64Info;
+
+Aarch64Info GetAarch64Info(void);
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+typedef enum {
+  AARCH64_FP,
+  AARCH64_ASIMD,
+  AARCH64_EVTSTRM,
+  AARCH64_AES,
+  AARCH64_PMULL,
+  AARCH64_SHA1,
+  AARCH64_SHA2,
+  AARCH64_CRC32,
+  AARCH64_ATOMICS,
+  AARCH64_FPHP,
+  AARCH64_ASIMDHP,
+  AARCH64_CPUID,
+  AARCH64_ASIMDRDM,
+  AARCH64_JSCVT,
+  AARCH64_FCMA,
+  AARCH64_LRCPC,
+  AARCH64_DCPOP,
+  AARCH64_SHA3,
+  AARCH64_SM3,
+  AARCH64_SM4,
+  AARCH64_ASIMDDP,
+  AARCH64_SHA512,
+  AARCH64_SVE,
+  AARCH64_ASIMDFHM,
+  AARCH64_DIT,
+  AARCH64_USCAT,
+  AARCH64_ILRCPC,
+  AARCH64_FLAGM,
+  AARCH64_SSBS,
+  AARCH64_SB,
+  AARCH64_PACA,
+  AARCH64_PACG,
+  AARCH64_DCPODP,
+  AARCH64_SVE2,
+  AARCH64_SVEAES,
+  AARCH64_SVEPMULL,
+  AARCH64_SVEBITPERM,
+  AARCH64_SVESHA3,
+  AARCH64_SVESM4,
+  AARCH64_FLAGM2,
+  AARCH64_FRINT,
+  AARCH64_SVEI8MM,
+  AARCH64_SVEF32MM,
+  AARCH64_SVEF64MM,
+  AARCH64_SVEBF16,
+  AARCH64_I8MM,
+  AARCH64_BF16,
+  AARCH64_DGH,
+  AARCH64_RNG,
+  AARCH64_BTI,
+  AARCH64_MTE,
+  AARCH64_ECV,
+  AARCH64_AFP,
+  AARCH64_RPRES,
+  AARCH64_MTE3,
+  AARCH64_SME,
+  AARCH64_SME_I16I64,
+  AARCH64_SME_F64F64,
+  AARCH64_SME_I8I32,
+  AARCH64_SME_F16F32,
+  AARCH64_SME_B16F32,
+  AARCH64_SME_F32F32,
+  AARCH64_SME_FA64,
+  AARCH64_WFXT,
+  AARCH64_EBF16,
+  AARCH64_SVE_EBF16,
+  AARCH64_CSSC,
+  AARCH64_RPRFM,
+  AARCH64_SVE2P1,
+  AARCH64_SME2,
+  AARCH64_SME2P1,
+  AARCH64_SME_I16I32,
+  AARCH64_SME_BI32I32,
+  AARCH64_SME_B16B16,
+  AARCH64_SME_F16F16,
+  AARCH64_LAST_,
+} Aarch64FeaturesEnum;
+
+int GetAarch64FeaturesEnumValue(const Aarch64Features* features,
+                                Aarch64FeaturesEnum value);
+
+const char* GetAarch64FeaturesEnumName(Aarch64FeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#if !defined(CPU_FEATURES_ARCH_AARCH64)
+#error "Including cpuinfo_aarch64.h from a non-aarch64 target."
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_AARCH64_H_
@@ -0,0 +1,121 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_ARM_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_ARM_H_
+
+#include <stdint.h>  // uint32_t
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  int swp : 1;       // SWP instruction (atomic read-modify-write)
+  int half : 1;      // Half-word loads and stores
+  int thumb : 1;     // Thumb (16-bit instruction set)
+  int _26bit : 1;    // "26 Bit" Model (Processor status register folded into
+                     // program counter)
+  int fastmult : 1;  // 32x32->64-bit multiplication
+  int fpa : 1;       // Floating point accelerator
+  int vfp : 1;       // Vector Floating Point.
+  int edsp : 1;     // DSP extensions (the 'e' variant of the ARM9 CPUs, and all
+                    // others above)
+  int java : 1;     // Jazelle (Java bytecode accelerator)
+  int iwmmxt : 1;   // Intel Wireless MMX Technology.
+  int crunch : 1;   // MaverickCrunch coprocessor
+  int thumbee : 1;  // ThumbEE
+  int neon : 1;     // Advanced SIMD.
+  int vfpv3 : 1;    // VFP version 3
+  int vfpv3d16 : 1;  // VFP version 3 with 16 D-registers
+  int tls : 1;       // TLS register
+  int vfpv4 : 1;     // VFP version 4 with fast context switching
+  int idiva : 1;     // SDIV and UDIV hardware division in ARM mode.
+  int idivt : 1;     // SDIV and UDIV hardware division in Thumb mode.
+  int vfpd32 : 1;    // VFP with 32 D-registers
+  int lpae : 1;     // Large Physical Address Extension (>4GB physical memory on
+                    // 32-bit architecture)
+  int evtstrm : 1;  // kernel event stream using generic architected timer
+  int aes : 1;      // Hardware-accelerated Advanced Encryption Standard.
+  int pmull : 1;    // Polynomial multiply long.
+  int sha1 : 1;     // Hardware-accelerated SHA1.
+  int sha2 : 1;     // Hardware-accelerated SHA2-256.
+  int crc32 : 1;    // Hardware-accelerated CRC-32.
+
+  // Make sure to update ArmFeaturesEnum below if you add a field here.
+} ArmFeatures;
+
+typedef struct {
+  ArmFeatures features;
+  int implementer;
+  int architecture;
+  int variant;
+  int part;
+  int revision;
+} ArmInfo;
+
+// TODO(user): Add macros to know which features are present at compile
+// time.
+
+ArmInfo GetArmInfo(void);
+
+// Compute CpuId from ArmInfo.
+uint32_t GetArmCpuId(const ArmInfo* const info);
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+typedef enum {
+  ARM_SWP,
+  ARM_HALF,
+  ARM_THUMB,
+  ARM_26BIT,
+  ARM_FASTMULT,
+  ARM_FPA,
+  ARM_VFP,
+  ARM_EDSP,
+  ARM_JAVA,
+  ARM_IWMMXT,
+  ARM_CRUNCH,
+  ARM_THUMBEE,
+  ARM_NEON,
+  ARM_VFPV3,
+  ARM_VFPV3D16,
+  ARM_TLS,
+  ARM_VFPV4,
+  ARM_IDIVA,
+  ARM_IDIVT,
+  ARM_VFPD32,
+  ARM_LPAE,
+  ARM_EVTSTRM,
+  ARM_AES,
+  ARM_PMULL,
+  ARM_SHA1,
+  ARM_SHA2,
+  ARM_CRC32,
+  ARM_LAST_,
+} ArmFeaturesEnum;
+
+int GetArmFeaturesEnumValue(const ArmFeatures* features, ArmFeaturesEnum value);
+
+const char* GetArmFeaturesEnumName(ArmFeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#if !defined(CPU_FEATURES_ARCH_ARM)
+#error "Including cpuinfo_arm.h from a non-arm target."
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_ARM_H_
@@ -0,0 +1,77 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_LOONGARCH_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_LOONGARCH_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+#if !defined(CPU_FEATURES_ARCH_LOONGARCH)
+#error "Including cpuinfo_loongarch.h from a non-loongarch target."
+#endif
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  // Base
+  int CPUCFG : 1;    // Instruction for Identify CPU Features 
+
+  // Extension
+  int LAM : 1;       // Extension for Atomic Memory Access Instructions
+  int UAL : 1;       // Extension for Non-Aligned Memory Access
+  int FPU : 1;       // Extension for Basic Floating-Point Instructions
+  int LSX : 1;       // Extension for Loongson SIMD eXtension
+  int LASX : 1;      // Extension for Loongson Advanced SIMD eXtension
+  int CRC32 : 1;     // Extension for Cyclic Redundancy Check Instructions
+  int COMPLEX : 1;   // Extension for Complex Vector Operation Instructions
+  int CRYPTO : 1;    // Extension for Encryption And Decryption Vector Instructions
+  int LVZ : 1;       // Extension for Virtualization
+  int LBT_X86 : 1;   // Extension for X86 Binary Translation Extension
+  int LBT_ARM : 1;   // Extension for ARM Binary Translation Extension
+  int LBT_MIPS : 1;  // Extension for MIPS Binary Translation Extension
+  int PTW : 1;       // Extension for Page Table Walker
+
+} LoongArchFeatures;
+
+typedef struct {
+  LoongArchFeatures features;
+} LoongArchInfo;
+
+typedef enum {
+  LOONGARCH_CPUCFG,
+  LOONGARCH_LAM,
+  LOONGARCH_UAL,
+  LOONGARCH_FPU,
+  LOONGARCH_LSX,
+  LOONGARCH_LASX,
+  LOONGARCH_CRC32,
+  LOONGARCH_COMPLEX,
+  LOONGARCH_CRYPTO,
+  LOONGARCH_LVZ,
+  LOONGARCH_LBT_X86,
+  LOONGARCH_LBT_ARM,
+  LOONGARCH_LBT_MIPS,
+  LOONGARCH_PTW,
+  LOONGARCH_LAST_,
+} LoongArchFeaturesEnum;
+
+LoongArchInfo GetLoongArchInfo(void);
+int GetLoongArchFeaturesEnumValue(const LoongArchFeatures* features,
+                              LoongArchFeaturesEnum value);
+const char* GetLoongArchFeaturesEnumName(LoongArchFeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_LOONGARCH_H_
@@ -0,0 +1,74 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_MIPS_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_MIPS_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  int msa : 1;    // MIPS SIMD Architecture
+                  // https://www.mips.com/products/architectures/ase/simd/
+  int eva : 1;    // Enhanced Virtual Addressing
+                  // https://www.mips.com/products/architectures/mips64/
+  int r6 : 1;     // True if is release 6 of the processor.
+  int mips16 : 1; // Compressed instructions
+  int mdmx : 1;   // MIPS Digital Media Extension
+  int mips3d : 1; // 3D graphics acceleration
+                  // MIPS(r) Architecture for Programmers, Volume IV-c
+  int smart : 1;  // Smart-card cryptography
+                  // MIPS(r) Architecture for Programmers, Volume IV-d
+  int dsp : 1;    // Digital Signal Processing
+                  // MIPS(r) Architecture for Programmers, Volume IV-e
+                  // https://www.mips.com/products/architectures/ase/dsp/
+
+  // Make sure to update MipsFeaturesEnum below if you add a field here.
+} MipsFeatures;
+
+typedef struct {
+  MipsFeatures features;
+} MipsInfo;
+
+MipsInfo GetMipsInfo(void);
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+typedef enum {
+  MIPS_MSA,
+  MIPS_EVA,
+  MIPS_R6,
+  MIPS_MIPS16,
+  MIPS_MDMX,
+  MIPS_MIPS3D,
+  MIPS_SMART,
+  MIPS_DSP,
+  MIPS_LAST_,
+} MipsFeaturesEnum;
+
+int GetMipsFeaturesEnumValue(const MipsFeatures* features,
+                             MipsFeaturesEnum value);
+
+const char* GetMipsFeaturesEnumName(MipsFeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#if !defined(CPU_FEATURES_ARCH_MIPS)
+#error "Including cpuinfo_mips.h from a non-mips target."
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_MIPS_H_
@@ -0,0 +1,149 @@
+// Copyright 2018 IBM
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_PPC_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_PPC_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  int ppc32 : 1;
+  int ppc64 : 1;
+  int ppc601 : 1;
+  int altivec : 1;
+  int fpu : 1;
+  int mmu : 1;
+  int mac_4xx : 1;
+  int unifiedcache : 1;
+  int spe : 1;
+  int efpsingle : 1;
+  int efpdouble : 1;
+  int no_tb : 1;
+  int power4 : 1;
+  int power5 : 1;
+  int power5plus : 1;
+  int cell : 1;
+  int booke : 1;
+  int smt : 1;
+  int icachesnoop : 1;
+  int arch205 : 1;
+  int pa6t : 1;
+  int dfp : 1;
+  int power6ext : 1;
+  int arch206 : 1;
+  int vsx : 1;
+  int pseries_perfmon_compat : 1;
+  int truele : 1;
+  int ppcle : 1;
+  int arch207 : 1;
+  int htm : 1;
+  int dscr : 1;
+  int ebb : 1;
+  int isel : 1;
+  int tar : 1;
+  int vcrypto : 1;
+  int htm_nosc : 1;
+  int arch300 : 1;
+  int ieee128 : 1;
+  int darn : 1;
+  int scv : 1;
+  int htm_no_suspend : 1;
+
+  // Make sure to update PPCFeaturesEnum below if you add a field here.
+} PPCFeatures;
+
+typedef struct {
+  PPCFeatures features;
+} PPCInfo;
+
+PPCInfo GetPPCInfo(void);
+
+typedef struct {
+  char platform[64];       // 0 terminated string
+  char base_platform[64];  // 0 terminated string
+} PPCPlatformTypeStrings;
+
+typedef struct {
+  char platform[64];  // 0 terminated string
+  char model[64];     // 0 terminated string
+  char machine[64];   // 0 terminated string
+  char cpu[64];       // 0 terminated string
+  PPCPlatformTypeStrings type;
+} PPCPlatformStrings;
+
+PPCPlatformStrings GetPPCPlatformStrings(void);
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+typedef enum {
+  PPC_32,          /* 32 bit mode execution */
+  PPC_64,          /* 64 bit mode execution */
+  PPC_601_INSTR,   /* Old POWER ISA */
+  PPC_HAS_ALTIVEC, /* SIMD Unit*/
+  PPC_HAS_FPU,     /* Floating Point Unit */
+  PPC_HAS_MMU,     /* Memory management unit */
+  PPC_HAS_4xxMAC,
+  PPC_UNIFIED_CACHE,  /* Unified instruction and data cache */
+  PPC_HAS_SPE,        /* Signal processing extention unit */
+  PPC_HAS_EFP_SINGLE, /* SPE single precision fpu */
+  PPC_HAS_EFP_DOUBLE, /* SPE double precision fpu */
+  PPC_NO_TB,          /* No timebase */
+  PPC_POWER4,
+  PPC_POWER5,
+  PPC_POWER5_PLUS,
+  PPC_CELL,  /* Cell broadband engine */
+  PPC_BOOKE, /* Embedded ISA */
+  PPC_SMT,   /* Simultaneous multi-threading */
+  PPC_ICACHE_SNOOP,
+  PPC_ARCH_2_05, /* ISA 2.05 - POWER6 */
+  PPC_PA6T,      /* PA Semi 6T core ISA */
+  PPC_HAS_DFP,   /* Decimal floating point unit */
+  PPC_POWER6_EXT,
+  PPC_ARCH_2_06,              /* ISA 2.06 - POWER7 */
+  PPC_HAS_VSX,                /* Vector-scalar extension */
+  PPC_PSERIES_PERFMON_COMPAT, /* Set of backwards compatibile performance
+                                 monitoring events */
+  PPC_TRUE_LE,
+  PPC_PPC_LE,
+  PPC_ARCH_2_07,      /* ISA 2.07 - POWER8 */
+  PPC_HTM,            /* Hardware Transactional Memory */
+  PPC_DSCR,           /* Data stream control register */
+  PPC_EBB,            /* Event base branching */
+  PPC_ISEL,           /* Integer select instructions */
+  PPC_TAR,            /* Target address register */
+  PPC_VEC_CRYPTO,     /* Vector cryptography instructions */
+  PPC_HTM_NOSC,       /* Transactions aborted when syscall made*/
+  PPC_ARCH_3_00,      /* ISA 3.00 - POWER9 */
+  PPC_HAS_IEEE128,    /* VSX IEEE Binary Float 128-bit */
+  PPC_DARN,           /* Deliver a random number instruction */
+  PPC_SCV,            /* scv syscall */
+  PPC_HTM_NO_SUSPEND, /* TM w/out suspended state */
+  PPC_LAST_,
+} PPCFeaturesEnum;
+
+int GetPPCFeaturesEnumValue(const PPCFeatures* features, PPCFeaturesEnum value);
+
+const char* GetPPCFeaturesEnumName(PPCFeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#if !defined(CPU_FEATURES_ARCH_PPC)
+#error "Including cpuinfo_ppc.h from a non-ppc target."
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_PPC_H_
@@ -0,0 +1,72 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_RISCV_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_RISCV_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+#if !defined(CPU_FEATURES_ARCH_RISCV)
+#error "Including cpuinfo_riscv.h from a non-riscv target."
+#endif
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  // Base
+  int RV32I : 1;  // Base Integer Instruction Set, 32-bit
+  int RV64I : 1;  // Base Integer Instruction Set, 64-bit
+
+  // Extension
+  int M : 1;         // Standard Extension for Integer Multiplication/Division
+  int A : 1;         // Standard Extension for Atomic Instructions
+  int F : 1;         // Standard Extension for Single-Precision Floating-Point
+  int D : 1;         // Standard Extension for Double-Precision Floating-Point
+  int Q : 1;         // Standard Extension for Quad-Precision Floating-Point
+  int C : 1;         // Standard Extension for Compressed Instructions
+  int V : 1;         // Standard Extension for Vector Instructions
+  int Zicsr : 1;     // Control and Status Register (CSR)
+  int Zifencei : 1;  // Instruction-Fetch Fence
+} RiscvFeatures;
+
+typedef struct {
+  RiscvFeatures features;
+  char uarch[64];   // 0 terminated string
+  char vendor[64];  // 0 terminated string
+} RiscvInfo;
+
+typedef enum {
+  RISCV_RV32I,
+  RISCV_RV64I,
+  RISCV_M,
+  RISCV_A,
+  RISCV_F,
+  RISCV_D,
+  RISCV_Q,
+  RISCV_C,
+  RISCV_V,
+  RISCV_Zicsr,
+  RISCV_Zifencei,
+  RISCV_LAST_,
+} RiscvFeaturesEnum;
+
+RiscvInfo GetRiscvInfo(void);
+int GetRiscvFeaturesEnumValue(const RiscvFeatures* features,
+                              RiscvFeaturesEnum value);
+const char* GetRiscvFeaturesEnumName(RiscvFeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_RISCV_H_
@@ -0,0 +1,108 @@
+// Copyright 2022 IBM
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_S390X_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_S390X_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  int esan3: 1;     // instructions named N3, "backported" to esa-mode
+  int zarch: 1;     // z/Architecture mode active
+  int stfle: 1;     // store-facility-list-extended
+  int msa: 1;       // message-security assist
+  int ldisp: 1;     // long-displacement
+  int eimm: 1;      // extended-immediate
+  int dfp: 1;       // decimal floating point & perform floating point operation
+  int edat: 1;      // huge page support
+  int etf3eh: 1;    // extended-translation facility 3 enhancement
+  int highgprs: 1;  // 64-bit register support for 31-bit processes
+  int te: 1;        // transactional execution
+  int vx: 1;        // vector extension facility
+  int vxd: 1;       // vector-packed-decimal facility
+  int vxe: 1;       // vector-enhancement facility 1
+  int gs: 1;        // guarded-storage facility
+  int vxe2: 1;      // vector-enhancements facility 2
+  int vxp: 1;       // vector-packed-decimal-enhancement facility
+  int sort: 1;      // enhanced-sort facility
+  int dflt: 1;      // deflate-conversion facility
+  int vxp2: 1;      // vector-packed-decimal-enhancement facility 2
+  int nnpa: 1;      // neural network processing assist facility
+  int pcimio: 1;    // PCI mio facility
+  int sie: 1;       // virtualization support
+
+  // Make sure to update S390XFeaturesEnum below if you add a field here.
+} S390XFeatures;
+
+typedef struct {
+  S390XFeatures features;
+} S390XInfo;
+
+S390XInfo GetS390XInfo(void);
+
+typedef struct {
+  char platform[64];       // 0 terminated string
+} S390XPlatformTypeStrings;
+
+typedef struct {
+  int num_processors;      // -1 if N/A
+  S390XPlatformTypeStrings type;
+} S390XPlatformStrings;
+
+S390XPlatformStrings GetS390XPlatformStrings(void);
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+typedef enum {
+  S390_ESAN3,
+  S390_ZARCH,
+  S390_STFLE,
+  S390_MSA,
+  S390_LDISP,
+  S390_EIMM,
+  S390_DFP,
+  S390_EDAT,
+  S390_ETF3EH,
+  S390_HIGHGPRS,
+  S390_TE,
+  S390_VX,
+  S390_VXD,
+  S390_VXE,
+  S390_GS,
+  S390_VXE2,
+  S390_VXP,
+  S390_SORT,
+  S390_DFLT,
+  S390_VXP2,
+  S390_NNPA,
+  S390_PCIMIO,
+  S390_SIE,
+  S390X_LAST_,
+} S390XFeaturesEnum;
+
+int GetS390XFeaturesEnumValue(const S390XFeatures* features, S390XFeaturesEnum value);
+
+const char* GetS390XFeaturesEnumName(S390XFeaturesEnum);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#if !defined(CPU_FEATURES_ARCH_S390X)
+#error "Including cpuinfo_s390x.h from a non-s390x target."
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_S390X_H_
@@ -0,0 +1,295 @@
+// Copyright 2017 Google LLC
+// Copyright 2020 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_CPUINFO_X86_H_
+#define CPU_FEATURES_INCLUDE_CPUINFO_X86_H_
+
+#include "cpu_features_cache_info.h"
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+// CPUID Vendors
+#define CPU_FEATURES_VENDOR_GENUINE_INTEL "GenuineIntel"
+#define CPU_FEATURES_VENDOR_AUTHENTIC_AMD "AuthenticAMD"
+#define CPU_FEATURES_VENDOR_HYGON_GENUINE "HygonGenuine"
+#define CPU_FEATURES_VENDOR_CENTAUR_HAULS "CentaurHauls"
+#define CPU_FEATURES_VENDOR_SHANGHAI "  Shanghai  "
+
+// See https://en.wikipedia.org/wiki/CPUID for a list of x86 cpu features.
+// The field names are based on the short name provided in the wikipedia tables.
+typedef struct {
+  int fpu : 1;
+  int tsc : 1;
+  int cx8 : 1;
+  int clfsh : 1;
+  int mmx : 1;
+  int aes : 1;
+  int erms : 1;
+  int f16c : 1;
+  int fma4 : 1;
+  int fma3 : 1;
+  int vaes : 1;
+  int vpclmulqdq : 1;
+  int bmi1 : 1;
+  int hle : 1;
+  int bmi2 : 1;
+  int rtm : 1;
+  int rdseed : 1;
+  int clflushopt : 1;
+  int clwb : 1;
+
+  int sse : 1;
+  int sse2 : 1;
+  int sse3 : 1;
+  int ssse3 : 1;
+  int sse4_1 : 1;
+  int sse4_2 : 1;
+  int sse4a : 1;
+
+  int avx : 1;
+  int avx_vnni : 1;
+  int avx2 : 1;
+
+  int avx512f : 1;
+  int avx512cd : 1;
+  int avx512er : 1;
+  int avx512pf : 1;
+  int avx512bw : 1;
+  int avx512dq : 1;
+  int avx512vl : 1;
+  int avx512ifma : 1;
+  int avx512vbmi : 1;
+  int avx512vbmi2 : 1;
+  int avx512vnni : 1;
+  int avx512bitalg : 1;
+  int avx512vpopcntdq : 1;
+  int avx512_4vnniw : 1;
+  int avx512_4vbmi2 : 1;  // Note: this is an alias to avx512_4fmaps.
+  int avx512_second_fma : 1;
+  int avx512_4fmaps : 1;
+  int avx512_bf16 : 1;
+  int avx512_vp2intersect : 1;
+  int avx512_fp16 : 1;
+  int amx_bf16 : 1;
+  int amx_tile : 1;
+  int amx_int8 : 1;
+  int amx_fp16 : 1;
+
+  int pclmulqdq : 1;
+  int smx : 1;
+  int sgx : 1;
+  int cx16 : 1;  // aka. CMPXCHG16B
+  int sha : 1;
+  int popcnt : 1;
+  int movbe : 1;
+  int rdrnd : 1;
+
+  int dca : 1;
+  int ss : 1;
+  int adx : 1;
+  int lzcnt : 1;  // Note: this flag is called ABM for AMD, LZCNT for Intel.
+  int gfni : 1;
+  int movdiri : 1;
+  int movdir64b : 1;
+  int fs_rep_mov : 1;          // Fast short REP MOV
+  int fz_rep_movsb : 1;        // Fast zero-length REP MOVSB
+  int fs_rep_stosb : 1;        // Fast short REP STOSB
+  int fs_rep_cmpsb_scasb : 1;  // Fast short REP CMPSB/SCASB
+
+  int lam: 1; // Intel Linear Address Mask
+  int uai: 1; // AMD Upper Address Ignore
+  // Make sure to update X86FeaturesEnum below if you add a field here.
+} X86Features;
+
+typedef struct {
+  X86Features features;
+  int family;
+  int model;
+  int stepping;
+  char vendor[13];        // 0 terminated string
+  char brand_string[49];  // 0 terminated string
+} X86Info;
+
+// Calls cpuid and returns an initialized X86info.
+X86Info GetX86Info(void);
+
+// Returns cache hierarchy informations.
+// Can call cpuid multiple times.
+CacheInfo GetX86CacheInfo(void);
+
+typedef enum {
+  X86_UNKNOWN,
+  ZHAOXIN_ZHANGJIANG,   // ZhangJiang
+  ZHAOXIN_WUDAOKOU,     // WuDaoKou
+  ZHAOXIN_LUJIAZUI,     // LuJiaZui
+  ZHAOXIN_YONGFENG,     // YongFeng
+  INTEL_80486,          // 80486
+  INTEL_P5,             // P5
+  INTEL_LAKEMONT,       // LAKEMONT
+  INTEL_CORE,           // CORE
+  INTEL_PNR,            // PENRYN
+  INTEL_NHM,            // NEHALEM
+  INTEL_ATOM_BNL,       // BONNELL
+  INTEL_WSM,            // WESTMERE
+  INTEL_SNB,            // SANDYBRIDGE
+  INTEL_IVB,            // IVYBRIDGE
+  INTEL_ATOM_SMT,       // SILVERMONT
+  INTEL_HSW,            // HASWELL
+  INTEL_BDW,            // BROADWELL
+  INTEL_SKL,            // SKYLAKE
+  INTEL_CCL,            // CASCADELAKE
+  INTEL_ATOM_GMT,       // GOLDMONT
+  INTEL_ATOM_GMT_PLUS,  // GOLDMONT+
+  INTEL_ATOM_TMT,       // TREMONT
+  INTEL_KBL,            // KABY LAKE
+  INTEL_CFL,            // COFFEE LAKE
+  INTEL_WHL,            // WHISKEY LAKE
+  INTEL_CML,            // COMET LAKE
+  INTEL_CNL,            // CANNON LAKE
+  INTEL_ICL,            // ICE LAKE
+  INTEL_TGL,            // TIGER LAKE
+  INTEL_SPR,            // SAPPHIRE RAPIDS
+  INTEL_ADL,            // ALDER LAKE
+  INTEL_RCL,            // ROCKET LAKE
+  INTEL_RPL,            // RAPTOR LAKE
+  INTEL_KNIGHTS_M,      // KNIGHTS MILL
+  INTEL_KNIGHTS_L,      // KNIGHTS LANDING
+  INTEL_KNIGHTS_F,      // KNIGHTS FERRY
+  INTEL_KNIGHTS_C,      // KNIGHTS CORNER
+  INTEL_NETBURST,       // NETBURST
+  AMD_HAMMER,           // K8  HAMMER
+  AMD_K10,              // K10
+  AMD_K11,              // K11
+  AMD_K12,              // K12 LLANO
+  AMD_BOBCAT,           // K14 BOBCAT
+  AMD_PILEDRIVER,       // K15 PILEDRIVER
+  AMD_STREAMROLLER,     // K15 STREAMROLLER
+  AMD_EXCAVATOR,        // K15 EXCAVATOR
+  AMD_BULLDOZER,        // K15 BULLDOZER
+  AMD_JAGUAR,           // K16 JAGUAR
+  AMD_PUMA,             // K16 PUMA
+  AMD_ZEN,              // K17 ZEN
+  AMD_ZEN_PLUS,         // K17 ZEN+
+  AMD_ZEN2,             // K17 ZEN 2
+  AMD_ZEN3,             // K19 ZEN 3
+  AMD_ZEN4,             // K19 ZEN 4
+  X86_MICROARCHITECTURE_LAST_,
+} X86Microarchitecture;
+
+// Returns the underlying microarchitecture by looking at X86Info's vendor,
+// family and model.
+X86Microarchitecture GetX86Microarchitecture(const X86Info* info);
+
+// Calls cpuid and fills the brand_string.
+// - brand_string *must* be of size 49 (beware of array decaying).
+// - brand_string will be zero terminated.
+CPU_FEATURES_DEPRECATED("brand_string is now embedded in X86Info by default")
+void FillX86BrandString(char brand_string[49]);
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+typedef enum {
+  X86_FPU,
+  X86_TSC,
+  X86_CX8,
+  X86_CLFSH,
+  X86_MMX,
+  X86_AES,
+  X86_ERMS,
+  X86_F16C,
+  X86_FMA4,
+  X86_FMA3,
+  X86_VAES,
+  X86_VPCLMULQDQ,
+  X86_BMI1,
+  X86_HLE,
+  X86_BMI2,
+  X86_RTM,
+  X86_RDSEED,
+  X86_CLFLUSHOPT,
+  X86_CLWB,
+  X86_SSE,
+  X86_SSE2,
+  X86_SSE3,
+  X86_SSSE3,
+  X86_SSE4_1,
+  X86_SSE4_2,
+  X86_SSE4A,
+  X86_AVX,
+  X86_AVX_VNNI,
+  X86_AVX2,
+  X86_AVX512F,
+  X86_AVX512CD,
+  X86_AVX512ER,
+  X86_AVX512PF,
+  X86_AVX512BW,
+  X86_AVX512DQ,
+  X86_AVX512VL,
+  X86_AVX512IFMA,
+  X86_AVX512VBMI,
+  X86_AVX512VBMI2,
+  X86_AVX512VNNI,
+  X86_AVX512BITALG,
+  X86_AVX512VPOPCNTDQ,
+  X86_AVX512_4VNNIW,
+  X86_AVX512_4VBMI2,  // Note: this is an alias to X86_AVX512_4FMAPS.
+  X86_AVX512_SECOND_FMA,
+  X86_AVX512_4FMAPS,
+  X86_AVX512_BF16,
+  X86_AVX512_VP2INTERSECT,
+  X86_AVX512_FP16,
+  X86_AMX_BF16,
+  X86_AMX_TILE,
+  X86_AMX_INT8,
+  X86_AMX_FP16,
+  X86_PCLMULQDQ,
+  X86_SMX,
+  X86_SGX,
+  X86_CX16,
+  X86_SHA,
+  X86_POPCNT,
+  X86_MOVBE,
+  X86_RDRND,
+  X86_DCA,
+  X86_SS,
+  X86_ADX,
+  X86_LZCNT,
+  X86_GFNI,
+  X86_MOVDIRI,
+  X86_MOVDIR64B,
+  X86_FS_REP_MOV,
+  X86_FZ_REP_MOVSB,
+  X86_FS_REP_STOSB,
+  X86_FS_REP_CMPSB_SCASB,
+  X86_LAM,
+  X86_UAI,
+  X86_LAST_,
+} X86FeaturesEnum;
+
+int GetX86FeaturesEnumValue(const X86Features* features, X86FeaturesEnum value);
+
+const char* GetX86FeaturesEnumName(X86FeaturesEnum);
+
+const char* GetX86MicroarchitectureName(X86Microarchitecture);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#if !defined(CPU_FEATURES_ARCH_X86)
+#error "Including cpuinfo_x86.h from a non-x86 target."
+#endif
+
+#endif  // CPU_FEATURES_INCLUDE_CPUINFO_X86_H_
@@ -0,0 +1,40 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_BIT_UTILS_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_BIT_UTILS_H_
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+inline static bool IsBitSet(uint32_t reg, uint32_t bit) {
+  return (reg >> bit) & 0x1;
+}
+
+inline static uint32_t ExtractBitRange(uint32_t reg, uint32_t msb,
+                                       uint32_t lsb) {
+  const uint64_t bits = msb - lsb + 1ULL;
+  const uint64_t mask = (1ULL << bits) - 1ULL;
+  assert(msb >= lsb);
+  return (reg >> lsb) & mask;
+}
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_BIT_UTILS_H_
@@ -0,0 +1,37 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
+
+#include <stdint.h>
+
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+// A struct to hold the result of a call to cpuid.
+typedef struct {
+  uint32_t eax, ebx, ecx, edx;
+} Leaf;
+
+// Returns the result of a call to the cpuid instruction.
+Leaf GetCpuidLeaf(uint32_t leaf_id, int ecx);
+
+// Returns the eax value of the XCR0 register.
+uint32_t GetXCR0Eax(void);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_CPUID_X86_H_
@@ -0,0 +1,39 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// An interface for the filesystem that allows mocking the filesystem in
+// unittests.
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_FILESYSTEM_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_FILESYSTEM_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+// Same as linux "open(filename, O_RDONLY)", retries automatically on EINTR.
+int CpuFeatures_OpenFile(const char* filename);
+
+// Same as linux "read(file_descriptor, buffer, buffer_size)", retries
+// automatically on EINTR.
+int CpuFeatures_ReadFile(int file_descriptor, void* buffer, size_t buffer_size);
+
+// Same as linux "close(file_descriptor)".
+void CpuFeatures_CloseFile(int file_descriptor);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_FILESYSTEM_H_
@@ -0,0 +1,277 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Interface to retrieve hardware capabilities. It relies on Linux's getauxval
+// or `/proc/self/auxval` under the hood.
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_HWCAPS_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_HWCAPS_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+// To avoid depending on the linux kernel we reproduce the architecture specific
+// constants here.
+
+// http://elixir.free-electrons.com/linux/latest/source/arch/arm64/include/uapi/asm/hwcap.h
+#define AARCH64_HWCAP_FP (1UL << 0)
+#define AARCH64_HWCAP_ASIMD (1UL << 1)
+#define AARCH64_HWCAP_EVTSTRM (1UL << 2)
+#define AARCH64_HWCAP_AES (1UL << 3)
+#define AARCH64_HWCAP_PMULL (1UL << 4)
+#define AARCH64_HWCAP_SHA1 (1UL << 5)
+#define AARCH64_HWCAP_SHA2 (1UL << 6)
+#define AARCH64_HWCAP_CRC32 (1UL << 7)
+#define AARCH64_HWCAP_ATOMICS (1UL << 8)
+#define AARCH64_HWCAP_FPHP (1UL << 9)
+#define AARCH64_HWCAP_ASIMDHP (1UL << 10)
+#define AARCH64_HWCAP_CPUID (1UL << 11)
+#define AARCH64_HWCAP_ASIMDRDM (1UL << 12)
+#define AARCH64_HWCAP_JSCVT (1UL << 13)
+#define AARCH64_HWCAP_FCMA (1UL << 14)
+#define AARCH64_HWCAP_LRCPC (1UL << 15)
+#define AARCH64_HWCAP_DCPOP (1UL << 16)
+#define AARCH64_HWCAP_SHA3 (1UL << 17)
+#define AARCH64_HWCAP_SM3 (1UL << 18)
+#define AARCH64_HWCAP_SM4 (1UL << 19)
+#define AARCH64_HWCAP_ASIMDDP (1UL << 20)
+#define AARCH64_HWCAP_SHA512 (1UL << 21)
+#define AARCH64_HWCAP_SVE (1UL << 22)
+#define AARCH64_HWCAP_ASIMDFHM (1UL << 23)
+#define AARCH64_HWCAP_DIT (1UL << 24)
+#define AARCH64_HWCAP_USCAT (1UL << 25)
+#define AARCH64_HWCAP_ILRCPC (1UL << 26)
+#define AARCH64_HWCAP_FLAGM (1UL << 27)
+#define AARCH64_HWCAP_SSBS (1UL << 28)
+#define AARCH64_HWCAP_SB (1UL << 29)
+#define AARCH64_HWCAP_PACA (1UL << 30)
+#define AARCH64_HWCAP_PACG (1UL << 31)
+
+#define AARCH64_HWCAP2_DCPODP (1UL << 0)
+#define AARCH64_HWCAP2_SVE2 (1UL << 1)
+#define AARCH64_HWCAP2_SVEAES (1UL << 2)
+#define AARCH64_HWCAP2_SVEPMULL (1UL << 3)
+#define AARCH64_HWCAP2_SVEBITPERM (1UL << 4)
+#define AARCH64_HWCAP2_SVESHA3 (1UL << 5)
+#define AARCH64_HWCAP2_SVESM4 (1UL << 6)
+#define AARCH64_HWCAP2_FLAGM2 (1UL << 7)
+#define AARCH64_HWCAP2_FRINT (1UL << 8)
+#define AARCH64_HWCAP2_SVEI8MM (1UL << 9)
+#define AARCH64_HWCAP2_SVEF32MM (1UL << 10)
+#define AARCH64_HWCAP2_SVEF64MM (1UL << 11)
+#define AARCH64_HWCAP2_SVEBF16 (1UL << 12)
+#define AARCH64_HWCAP2_I8MM (1UL << 13)
+#define AARCH64_HWCAP2_BF16 (1UL << 14)
+#define AARCH64_HWCAP2_DGH (1UL << 15)
+#define AARCH64_HWCAP2_RNG (1UL << 16)
+#define AARCH64_HWCAP2_BTI (1UL << 17)
+#define AARCH64_HWCAP2_MTE (1UL << 18)
+#define AARCH64_HWCAP2_ECV (1UL << 19)
+#define AARCH64_HWCAP2_AFP (1UL << 20)
+#define AARCH64_HWCAP2_RPRES (1UL << 21)
+#define AARCH64_HWCAP2_MTE3 (1UL << 22)
+#define AARCH64_HWCAP2_SME (1UL << 23)
+#define AARCH64_HWCAP2_SME_I16I64 (1UL << 24)
+#define AARCH64_HWCAP2_SME_F64F64 (1UL << 25)
+#define AARCH64_HWCAP2_SME_I8I32 (1UL << 26)
+#define AARCH64_HWCAP2_SME_F16F32 (1UL << 27)
+#define AARCH64_HWCAP2_SME_B16F32 (1UL << 28)
+#define AARCH64_HWCAP2_SME_F32F32 (1UL << 29)
+#define AARCH64_HWCAP2_SME_FA64 (1UL << 30)
+#define AARCH64_HWCAP2_WFXT (1UL << 31)
+#define AARCH64_HWCAP2_EBF16 (1UL << 32)
+#define AARCH64_HWCAP2_SVE_EBF16 (1UL << 33)
+#define AARCH64_HWCAP2_CSSC (1UL << 34)
+#define AARCH64_HWCAP2_RPRFM (1UL << 35)
+#define AARCH64_HWCAP2_SVE2P1 (1UL << 36)
+#define AARCH64_HWCAP2_SME2 (1UL << 37)
+#define AARCH64_HWCAP2_SME2P1 (1UL << 38)
+#define AARCH64_HWCAP2_SME_I16I32 (1UL << 39)
+#define AARCH64_HWCAP2_SME_BI32I32 (1UL << 40)
+#define AARCH64_HWCAP2_SME_B16B16 (1UL << 41)
+#define AARCH64_HWCAP2_SME_F16F16 (1UL << 42)
+
+// http://elixir.free-electrons.com/linux/latest/source/arch/arm/include/uapi/asm/hwcap.h
+#define ARM_HWCAP_SWP (1UL << 0)
+#define ARM_HWCAP_HALF (1UL << 1)
+#define ARM_HWCAP_THUMB (1UL << 2)
+#define ARM_HWCAP_26BIT (1UL << 3)
+#define ARM_HWCAP_FAST_MULT (1UL << 4)
+#define ARM_HWCAP_FPA (1UL << 5)
+#define ARM_HWCAP_VFP (1UL << 6)
+#define ARM_HWCAP_EDSP (1UL << 7)
+#define ARM_HWCAP_JAVA (1UL << 8)
+#define ARM_HWCAP_IWMMXT (1UL << 9)
+#define ARM_HWCAP_CRUNCH (1UL << 10)
+#define ARM_HWCAP_THUMBEE (1UL << 11)
+#define ARM_HWCAP_NEON (1UL << 12)
+#define ARM_HWCAP_VFPV3 (1UL << 13)
+#define ARM_HWCAP_VFPV3D16 (1UL << 14)
+#define ARM_HWCAP_TLS (1UL << 15)
+#define ARM_HWCAP_VFPV4 (1UL << 16)
+#define ARM_HWCAP_IDIVA (1UL << 17)
+#define ARM_HWCAP_IDIVT (1UL << 18)
+#define ARM_HWCAP_VFPD32 (1UL << 19)
+#define ARM_HWCAP_LPAE (1UL << 20)
+#define ARM_HWCAP_EVTSTRM (1UL << 21)
+#define ARM_HWCAP2_AES (1UL << 0)
+#define ARM_HWCAP2_PMULL (1UL << 1)
+#define ARM_HWCAP2_SHA1 (1UL << 2)
+#define ARM_HWCAP2_SHA2 (1UL << 3)
+#define ARM_HWCAP2_CRC32 (1UL << 4)
+
+// http://elixir.free-electrons.com/linux/latest/source/arch/mips/include/uapi/asm/hwcap.h
+#define MIPS_HWCAP_R6 (1UL << 0)
+#define MIPS_HWCAP_MSA (1UL << 1)
+#define MIPS_HWCAP_CRC32 (1UL << 2)
+#define MIPS_HWCAP_MIPS16 (1UL << 3)
+#define MIPS_HWCAP_MDMX (1UL << 4)
+#define MIPS_HWCAP_MIPS3D (1UL << 5)
+#define MIPS_HWCAP_SMARTMIPS (1UL << 6)
+#define MIPS_HWCAP_DSP (1UL << 7)
+#define MIPS_HWCAP_DSP2 (1UL << 8)
+#define MIPS_HWCAP_DSP3 (1UL << 9)
+
+// http://elixir.free-electrons.com/linux/latest/source/arch/powerpc/include/uapi/asm/cputable.h
+#ifndef _UAPI__ASM_POWERPC_CPUTABLE_H
+/* in AT_HWCAP */
+#define PPC_FEATURE_32 0x80000000
+#define PPC_FEATURE_64 0x40000000
+#define PPC_FEATURE_601_INSTR 0x20000000
+#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
+#define PPC_FEATURE_HAS_FPU 0x08000000
+#define PPC_FEATURE_HAS_MMU 0x04000000
+#define PPC_FEATURE_HAS_4xxMAC 0x02000000
+#define PPC_FEATURE_UNIFIED_CACHE 0x01000000
+#define PPC_FEATURE_HAS_SPE 0x00800000
+#define PPC_FEATURE_HAS_EFP_SINGLE 0x00400000
+#define PPC_FEATURE_HAS_EFP_DOUBLE 0x00200000
+#define PPC_FEATURE_NO_TB 0x00100000
+#define PPC_FEATURE_POWER4 0x00080000
+#define PPC_FEATURE_POWER5 0x00040000
+#define PPC_FEATURE_POWER5_PLUS 0x00020000
+#define PPC_FEATURE_CELL 0x00010000
+#define PPC_FEATURE_BOOKE 0x00008000
+#define PPC_FEATURE_SMT 0x00004000
+#define PPC_FEATURE_ICACHE_SNOOP 0x00002000
+#define PPC_FEATURE_ARCH_2_05 0x00001000
+#define PPC_FEATURE_PA6T 0x00000800
+#define PPC_FEATURE_HAS_DFP 0x00000400
+#define PPC_FEATURE_POWER6_EXT 0x00000200
+#define PPC_FEATURE_ARCH_2_06 0x00000100
+#define PPC_FEATURE_HAS_VSX 0x00000080
+
+#define PPC_FEATURE_PSERIES_PERFMON_COMPAT 0x00000040
+
+/* Reserved - do not use                0x00000004 */
+#define PPC_FEATURE_TRUE_LE 0x00000002
+#define PPC_FEATURE_PPC_LE 0x00000001
+
+/* in AT_HWCAP2 */
+#define PPC_FEATURE2_ARCH_2_07 0x80000000
+#define PPC_FEATURE2_HTM 0x40000000
+#define PPC_FEATURE2_DSCR 0x20000000
+#define PPC_FEATURE2_EBB 0x10000000
+#define PPC_FEATURE2_ISEL 0x08000000
+#define PPC_FEATURE2_TAR 0x04000000
+#define PPC_FEATURE2_VEC_CRYPTO 0x02000000
+#define PPC_FEATURE2_HTM_NOSC 0x01000000
+#define PPC_FEATURE2_ARCH_3_00 0x00800000
+#define PPC_FEATURE2_HAS_IEEE128 0x00400000
+#define PPC_FEATURE2_DARN 0x00200000
+#define PPC_FEATURE2_SCV 0x00100000
+#define PPC_FEATURE2_HTM_NO_SUSPEND 0x00080000
+#endif
+
+// https://elixir.bootlin.com/linux/v6.0-rc6/source/arch/s390/include/asm/elf.h
+#define HWCAP_S390_ESAN3        1
+#define HWCAP_S390_ZARCH        2
+#define HWCAP_S390_STFLE        4
+#define HWCAP_S390_MSA          8
+#define HWCAP_S390_LDISP        16
+#define HWCAP_S390_EIMM         32
+#define HWCAP_S390_DFP          64
+#define HWCAP_S390_HPAGE        128
+#define HWCAP_S390_ETF3EH       256
+#define HWCAP_S390_HIGH_GPRS    512
+#define HWCAP_S390_TE           1024
+#define HWCAP_S390_VX           2048
+#define HWCAP_S390_VXRS         HWCAP_S390_VX
+#define HWCAP_S390_VXD          4096
+#define HWCAP_S390_VXRS_BCD     HWCAP_S390_VXD
+#define HWCAP_S390_VXE          8192
+#define HWCAP_S390_VXRS_EXT     HWCAP_S390_VXE
+#define HWCAP_S390_GS           16384
+#define HWCAP_S390_VXRS_EXT2    32768
+#define HWCAP_S390_VXRS_PDE     65536
+#define HWCAP_S390_SORT         131072
+#define HWCAP_S390_DFLT         262144
+#define HWCAP_S390_VXRS_PDE2    524288
+#define HWCAP_S390_NNPA         1048576
+#define HWCAP_S390_PCI_MIO      2097152
+#define HWCAP_S390_SIE          4194304
+
+// https://elixir.bootlin.com/linux/latest/source/arch/riscv/include/uapi/asm/hwcap.h
+#define RISCV_HWCAP_32 0x32
+#define RISCV_HWCAP_64 0x64
+#define RISCV_HWCAP_128 0x128
+#define RISCV_HWCAP_M (1UL << ('M' - 'A'))
+#define RISCV_HWCAP_A (1UL << ('A' - 'A'))
+#define RISCV_HWCAP_F (1UL << ('F' - 'A'))
+#define RISCV_HWCAP_D (1UL << ('D' - 'A'))
+#define RISCV_HWCAP_Q (1UL << ('Q' - 'A'))
+#define RISCV_HWCAP_C (1UL << ('C' - 'A'))
+#define RISCV_HWCAP_V (1UL << ('V' - 'A'))
+
+// https://github.com/torvalds/linux/blob/master/arch/loongarch/include/uapi/asm/hwcap.h
+#define HWCAP_LOONGARCH_CPUCFG   (1 << 0)
+#define HWCAP_LOONGARCH_LAM      (1 << 1)
+#define HWCAP_LOONGARCH_UAL      (1 << 2)
+#define HWCAP_LOONGARCH_FPU      (1 << 3)
+#define HWCAP_LOONGARCH_LSX      (1 << 4)
+#define HWCAP_LOONGARCH_LASX     (1 << 5)
+#define HWCAP_LOONGARCH_CRC32    (1 << 6)
+#define HWCAP_LOONGARCH_COMPLEX  (1 << 7)
+#define HWCAP_LOONGARCH_CRYPTO   (1 << 8)
+#define HWCAP_LOONGARCH_LVZ      (1 << 9)
+#define HWCAP_LOONGARCH_LBT_X86  (1 << 10)
+#define HWCAP_LOONGARCH_LBT_ARM  (1 << 11)
+#define HWCAP_LOONGARCH_LBT_MIPS (1 << 12)
+#define HWCAP_LOONGARCH_PTW      (1 << 13)
+
+typedef struct {
+  unsigned long hwcaps;
+  unsigned long hwcaps2;
+} HardwareCapabilities;
+
+// Retrieves values from auxiliary vector for types AT_HWCAP and AT_HWCAP2.
+// First tries to call getauxval(), if not available falls back to reading
+// "/proc/self/auxv".
+HardwareCapabilities CpuFeatures_GetHardwareCapabilities(void);
+
+// Checks whether value for AT_HWCAP (or AT_HWCAP2) match hwcaps_mask.
+bool CpuFeatures_IsHwCapsSet(const HardwareCapabilities hwcaps_mask,
+                             const HardwareCapabilities hwcaps);
+
+// Get pointer for the AT_PLATFORM type.
+const char* CpuFeatures_GetPlatformPointer(void);
+// Get pointer for the AT_BASE_PLATFORM type.
+const char* CpuFeatures_GetBasePlatformPointer(void);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_HWCAPS_H_
@@ -0,0 +1,49 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Reads a file line by line and stores the data on the stack. This allows
+// parsing files in one go without allocating.
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_
+
+#include <stdbool.h>
+
+#include "cpu_features_macros.h"
+#include "internal/string_view.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  char buffer[STACK_LINE_READER_BUFFER_SIZE];
+  StringView view;
+  int fd;
+  bool skip_mode;
+} StackLineReader;
+
+// Initializes a StackLineReader.
+void StackLineReader_Initialize(StackLineReader* reader, int fd);
+
+typedef struct {
+  StringView line;  // A view of the line.
+  bool eof;         // Nothing more to read, we reached EOF.
+  bool full_line;   // If false the line was truncated to
+                    // STACK_LINE_READER_BUFFER_SIZE.
+} LineResult;
+
+// Reads the file pointed to by fd and tries to read a full line.
+LineResult StackLineReader_NextLine(StackLineReader* reader);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_
@@ -0,0 +1,110 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// A view over a piece of string. The view is not 0 terminated.
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_STRING_VIEW_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_STRING_VIEW_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "cpu_features_macros.h"
+
+CPU_FEATURES_START_CPP_NAMESPACE
+
+typedef struct {
+  const char* ptr;
+  size_t size;
+} StringView;
+
+#ifdef __cplusplus
+static const StringView kEmptyStringView = {NULL, 0};
+#else
+static const StringView kEmptyStringView;
+#endif
+
+// Returns a StringView from the provided string.
+// Passing NULL is valid only if size is 0.
+static inline StringView view(const char* str, const size_t size) {
+  StringView view;
+  view.ptr = str;
+  view.size = size;
+  return view;
+}
+
+static inline StringView str(const char* str) { return view(str, strlen(str)); }
+
+// Returns the index of the first occurrence of c in view or -1 if not found.
+int CpuFeatures_StringView_IndexOfChar(const StringView view, char c);
+
+// Returns the index of the first occurrence of sub_view in view or -1 if not
+// found.
+int CpuFeatures_StringView_IndexOf(const StringView view,
+                                   const StringView sub_view);
+
+// Returns whether a is equal to b (same content).
+bool CpuFeatures_StringView_IsEquals(const StringView a, const StringView b);
+
+// Returns whether a starts with b.
+bool CpuFeatures_StringView_StartsWith(const StringView a, const StringView b);
+
+// Removes count characters from the beginning of view or kEmptyStringView if
+// count if greater than view.size.
+StringView CpuFeatures_StringView_PopFront(const StringView str_view,
+                                           size_t count);
+
+// Removes count characters from the end of view or kEmptyStringView if count if
+// greater than view.size.
+StringView CpuFeatures_StringView_PopBack(const StringView str_view,
+                                          size_t count);
+
+// Keeps the count first characters of view or view if count if greater than
+// view.size.
+StringView CpuFeatures_StringView_KeepFront(const StringView str_view,
+                                            size_t count);
+
+// Retrieves the first character of view. If view is empty the behavior is
+// undefined.
+char CpuFeatures_StringView_Front(const StringView view);
+
+// Retrieves the last character of view. If view is empty the behavior is
+// undefined.
+char CpuFeatures_StringView_Back(const StringView view);
+
+// Removes leading and tailing space characters.
+StringView CpuFeatures_StringView_TrimWhitespace(StringView view);
+
+// Convert StringView to positive integer. e.g. "42", "0x2a".
+// Returns -1 on error.
+int CpuFeatures_StringView_ParsePositiveNumber(const StringView view);
+
+// Copies src StringView to dst buffer.
+void CpuFeatures_StringView_CopyString(const StringView src, char* dst,
+                                       size_t dst_size);
+
+// Checks if line contains the specified whitespace separated word.
+bool CpuFeatures_StringView_HasWord(const StringView line,
+                                    const char* const word,
+                                    const char separator);
+
+// Get key/value from line. key and value are separated by ": ".
+// key and value are cleaned up from leading and trailing whitespaces.
+bool CpuFeatures_StringView_GetAttributeKeyValue(const StringView line,
+                                                 StringView* key,
+                                                 StringView* value);
+
+CPU_FEATURES_END_CPP_NAMESPACE
+
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_STRING_VIEW_H_
@@ -0,0 +1,70 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CPU_FEATURES_INCLUDE_INTERNAL_WINDOWS_UTILS_H_
+#define CPU_FEATURES_INCLUDE_INTERNAL_WINDOWS_UTILS_H_
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_OS_WINDOWS
+
+#include <windows.h>  // IsProcessorFeaturePresent
+
+// modern WinSDK winnt.h contains newer features detection definitions
+#if !defined(PF_SSSE3_INSTRUCTIONS_AVAILABLE)
+#define PF_SSSE3_INSTRUCTIONS_AVAILABLE 36
+#endif
+
+#if !defined(PF_SSE4_1_INSTRUCTIONS_AVAILABLE)
+#define PF_SSE4_1_INSTRUCTIONS_AVAILABLE 37
+#endif
+
+#if !defined(PF_SSE4_2_INSTRUCTIONS_AVAILABLE)
+#define PF_SSE4_2_INSTRUCTIONS_AVAILABLE 38
+#endif
+
+#if !defined(PF_ARM_VFP_32_REGISTERS_AVAILABLE)
+#define PF_ARM_VFP_32_REGISTERS_AVAILABLE 18
+#endif
+
+#if !defined(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_NEON_INSTRUCTIONS_AVAILABLE 19
+#endif
+
+#if !defined(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE 30
+#endif
+
+#if !defined(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE 31
+#endif
+
+#if !defined(PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE 34
+#endif
+
+#if !defined(PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE 43
+#endif
+
+#if !defined(PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE 44
+#endif
+
+#if !defined(PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE)
+#define PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE 45
+#endif
+
+#endif  // CPU_FEATURES_OS_WINDOWS
+#endif  // CPU_FEATURES_INCLUDE_INTERNAL_WINDOWS_UTILS_H_
@@ -0,0 +1,19 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stddef.h>
+
+static void copy(char *__restrict dst, const char *src, size_t count) {
+  for (size_t i = 0; i < count; ++i) dst[i] = src[i];
+}
@@ -0,0 +1,86 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef INTROSPECTION_PREFIX
+#error "missing INTROSPECTION_PREFIX"
+#endif
+#ifndef INTROSPECTION_ENUM_PREFIX
+#error "missing INTROSPECTION_ENUM_PREFIX"
+#endif
+#ifndef INTROSPECTION_TABLE
+#error "missing INTROSPECTION_TABLE"
+#endif
+
+#include <stdbool.h>
+
+#define STRINGIZE_(s) #s
+#define STRINGIZE(s) STRINGIZE_(s)
+
+#define FEAT_TYPE_NAME__(X) X##Features
+#define FEAT_TYPE_NAME_(X) FEAT_TYPE_NAME__(X)
+#define FEAT_TYPE_NAME FEAT_TYPE_NAME_(INTROSPECTION_PREFIX)
+
+#define FEAT_ENUM_NAME__(X) X##FeaturesEnum
+#define FEAT_ENUM_NAME_(X) FEAT_ENUM_NAME__(X)
+#define FEAT_ENUM_NAME FEAT_ENUM_NAME_(INTROSPECTION_PREFIX)
+
+#define GET_FEAT_ENUM_VALUE__(X) Get##X##FeaturesEnumValue
+#define GET_FEAT_ENUM_VALUE_(X) GET_FEAT_ENUM_VALUE__(X)
+#define GET_FEAT_ENUM_VALUE GET_FEAT_ENUM_VALUE_(INTROSPECTION_PREFIX)
+
+#define GET_FEAT_ENUM_NAME__(X) Get##X##FeaturesEnumName
+#define GET_FEAT_ENUM_NAME_(X) GET_FEAT_ENUM_NAME__(X)
+#define GET_FEAT_ENUM_NAME GET_FEAT_ENUM_NAME_(INTROSPECTION_PREFIX)
+
+#define FEAT_ENUM_LAST__(X) X##_LAST_
+#define FEAT_ENUM_LAST_(X) FEAT_ENUM_LAST__(X)
+#define FEAT_ENUM_LAST FEAT_ENUM_LAST_(INTROSPECTION_ENUM_PREFIX)
+
+// Generate individual getters and setters.
+#define LINE(ENUM, NAME, A, B, C)                                \
+  static void set_##ENUM(FEAT_TYPE_NAME* features, bool value) { \
+    features->NAME = value;                                      \
+  }                                                              \
+  static int get_##ENUM(const FEAT_TYPE_NAME* features) {        \
+    return features->NAME;                                       \
+  }
+INTROSPECTION_TABLE
+#undef LINE
+
+// Generate getters table
+#define LINE(ENUM, NAME, A, B, C) [ENUM] = get_##ENUM,
+static int (*const kGetters[])(const FEAT_TYPE_NAME*) = {INTROSPECTION_TABLE};
+#undef LINE
+
+// Generate setters table
+#define LINE(ENUM, NAME, A, B, C) [ENUM] = set_##ENUM,
+static void (*const kSetters[])(FEAT_TYPE_NAME*, bool) = {INTROSPECTION_TABLE};
+#undef LINE
+
+// Implements the `GetXXXFeaturesEnumValue` API.
+int GET_FEAT_ENUM_VALUE(const FEAT_TYPE_NAME* features, FEAT_ENUM_NAME value) {
+  if (value >= FEAT_ENUM_LAST) return false;
+  return kGetters[value](features);
+}
+
+// Generate feature name table.
+#define LINE(ENUM, NAME, A, B, C) [ENUM] = STRINGIZE(NAME),
+static const char* kFeatureNames[] = {INTROSPECTION_TABLE};
+#undef LINE
+
+// Implements the `GetXXXFeaturesEnumName` API.
+const char* GET_FEAT_ENUM_NAME(FEAT_ENUM_NAME value) {
+  if (value >= FEAT_ENUM_LAST) return "unknown_feature";
+  return kFeatureNames[value];
+}
@@ -0,0 +1,26 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "define_introspection.inl"
+#include "internal/hwcaps.h"
+
+#define LINE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) \
+  [ENUM] = (HardwareCapabilities){HWCAP, HWCAP2},
+static const HardwareCapabilities kHardwareCapabilities[] = {
+    INTROSPECTION_TABLE};
+#undef LINE
+
+#define LINE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) [ENUM] = CPUINFO_FLAG,
+static const char* kCpuInfoFlags[] = {INTROSPECTION_TABLE};
+#undef LINE
@@ -0,0 +1,22 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stdbool.h>
+#include <stddef.h>
+
+static bool equals(const char *lhs, const char *rhs, size_t count) {
+  for (size_t i = 0; i < count; ++i)
+    if (lhs[i] != rhs[i]) return false;
+  return true;
+}
@@ -0,0 +1,62 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "internal/filesystem.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#if defined(CPU_FEATURES_MOCK_FILESYSTEM)
+// Implementation will be provided by test/filesystem_for_testing.cc.
+#elif defined(_MSC_VER)
+#include <io.h>
+int CpuFeatures_OpenFile(const char* filename) {
+  int fd = -1;
+  _sopen_s(&fd, filename, _O_RDONLY, _SH_DENYWR, _S_IREAD);
+  return fd;
+}
+
+void CpuFeatures_CloseFile(int file_descriptor) { _close(file_descriptor); }
+
+int CpuFeatures_ReadFile(int file_descriptor, void* buffer,
+                         size_t buffer_size) {
+  return _read(file_descriptor, buffer, (unsigned int)buffer_size);
+}
+
+#else
+#include <unistd.h>
+
+int CpuFeatures_OpenFile(const char* filename) {
+  int result;
+  do {
+    result = open(filename, O_RDONLY);
+  } while (result == -1L && errno == EINTR);
+  return result;
+}
+
+void CpuFeatures_CloseFile(int file_descriptor) { close(file_descriptor); }
+
+int CpuFeatures_ReadFile(int file_descriptor, void* buffer,
+                         size_t buffer_size) {
+  int result;
+  do {
+    result = read(file_descriptor, buffer, buffer_size);
+  } while (result == -1L && errno == EINTR);
+  return result;
+}
+
+#endif
@@ -0,0 +1,169 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "internal/hwcaps.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "cpu_features_macros.h"
+#include "internal/filesystem.h"
+#include "internal/string_view.h"
+
+static bool IsSet(const uint32_t mask, const uint32_t value) {
+  if (mask == 0) return false;
+  return (value & mask) == mask;
+}
+
+bool CpuFeatures_IsHwCapsSet(const HardwareCapabilities hwcaps_mask,
+                             const HardwareCapabilities hwcaps) {
+  return IsSet(hwcaps_mask.hwcaps, hwcaps.hwcaps) ||
+         IsSet(hwcaps_mask.hwcaps2, hwcaps.hwcaps2);
+}
+
+#ifdef CPU_FEATURES_TEST
+// In test mode, hwcaps_for_testing will define the following functions.
+HardwareCapabilities CpuFeatures_GetHardwareCapabilities(void);
+const char* CpuFeatures_GetPlatformPointer(void);
+const char* CpuFeatures_GetBasePlatformPointer(void);
+#else
+
+// Debug facilities
+#if defined(NDEBUG)
+#define D(...)
+#else
+#include <stdio.h>
+#define D(...)           \
+  do {                   \
+    printf(__VA_ARGS__); \
+    fflush(stdout);      \
+  } while (0)
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation of GetElfHwcapFromGetauxval
+////////////////////////////////////////////////////////////////////////////////
+
+#define AT_HWCAP 16
+#define AT_HWCAP2 26
+#define AT_PLATFORM 15
+#define AT_BASE_PLATFORM 24
+
+#if defined(HAVE_STRONG_GETAUXVAL)
+#include <sys/auxv.h>
+static unsigned long GetElfHwcapFromGetauxval(uint32_t hwcap_type) {
+  return getauxval(hwcap_type);
+}
+#elif defined(HAVE_DLFCN_H)
+// On Android we probe the system's C library for a 'getauxval' function and
+// call it if it exits, or return 0 for failure. This function is available
+// since API level 18.
+//
+// Note that getauxval() can't really be re-implemented here, because its
+// implementation does not parse /proc/self/auxv. Instead it depends on values
+// that are passed by the kernel at process-init time to the C runtime
+// initialization layer.
+
+#include <dlfcn.h>
+
+typedef unsigned long getauxval_func_t(unsigned long);
+
+static uint32_t GetElfHwcapFromGetauxval(uint32_t hwcap_type) {
+  uint32_t ret = 0;
+  void *libc_handle = NULL;
+  getauxval_func_t *func = NULL;
+
+  dlerror();  // Cleaning error state before calling dlopen.
+  libc_handle = dlopen("libc.so", RTLD_NOW);
+  if (!libc_handle) {
+    D("Could not dlopen() C library: %s\n", dlerror());
+    return 0;
+  }
+  func = (getauxval_func_t *)dlsym(libc_handle, "getauxval");
+  if (!func) {
+    D("Could not find getauxval() in C library\n");
+  } else {
+    // Note: getauxval() returns 0 on failure. Doesn't touch errno.
+    ret = (uint32_t)(*func)(hwcap_type);
+  }
+  dlclose(libc_handle);
+  return ret;
+}
+#else
+#error "This platform does not provide hardware capabilities."
+#endif
+
+// Implementation of GetHardwareCapabilities for OS that provide
+// GetElfHwcapFromGetauxval().
+
+// Fallback when getauxval is not available, retrieves hwcaps from
+// "/proc/self/auxv".
+static uint32_t GetElfHwcapFromProcSelfAuxv(uint32_t hwcap_type) {
+  struct {
+    uint32_t tag;
+    uint32_t value;
+  } entry;
+  uint32_t result = 0;
+  const char filepath[] = "/proc/self/auxv";
+  const int fd = CpuFeatures_OpenFile(filepath);
+  if (fd < 0) {
+    D("Could not open %s\n", filepath);
+    return 0;
+  }
+  for (;;) {
+    const int ret = CpuFeatures_ReadFile(fd, (char *)&entry, sizeof entry);
+    if (ret < 0) {
+      D("Error while reading %s\n", filepath);
+      break;
+    }
+    // Detect end of list.
+    if (ret == 0 || (entry.tag == 0 && entry.value == 0)) {
+      break;
+    }
+    if (entry.tag == hwcap_type) {
+      result = entry.value;
+      break;
+    }
+  }
+  CpuFeatures_CloseFile(fd);
+  return result;
+}
+
+// Retrieves hardware capabilities by first trying to call getauxval, if not
+// available falls back to reading "/proc/self/auxv".
+static unsigned long GetHardwareCapabilitiesFor(uint32_t type) {
+  unsigned long hwcaps = GetElfHwcapFromGetauxval(type);
+  if (!hwcaps) {
+    D("Parsing /proc/self/auxv to extract ELF hwcaps!\n");
+    hwcaps = GetElfHwcapFromProcSelfAuxv(type);
+  }
+  return hwcaps;
+}
+
+HardwareCapabilities CpuFeatures_GetHardwareCapabilities(void) {
+  HardwareCapabilities capabilities;
+  capabilities.hwcaps = GetHardwareCapabilitiesFor(AT_HWCAP);
+  capabilities.hwcaps2 = GetHardwareCapabilitiesFor(AT_HWCAP2);
+  return capabilities;
+}
+
+const char *CpuFeatures_GetPlatformPointer(void) {
+  return (const char *)GetHardwareCapabilitiesFor(AT_PLATFORM);
+}
+
+const char *CpuFeatures_GetBasePlatformPointer(void) {
+  return (const char *)GetHardwareCapabilitiesFor(AT_BASE_PLATFORM);
+}
+
+#endif  // CPU_FEATURES_TEST
@@ -0,0 +1,118 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stdbool.h>
+
+#include "cpu_features_macros.h"
+#include "cpuinfo_aarch64.h"
+#include "internal/bit_utils.h"
+#include "internal/filesystem.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+#if !defined(CPU_FEATURES_ARCH_AARCH64)
+#error "Cannot compile aarch64_base on a non aarch64 platform."
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                                                  \
+  LINE(AARCH64_FP, fp, "fp", AARCH64_HWCAP_FP, 0)                            \
+  LINE(AARCH64_ASIMD, asimd, "asimd", AARCH64_HWCAP_ASIMD, 0)                \
+  LINE(AARCH64_EVTSTRM, evtstrm, "evtstrm", AARCH64_HWCAP_EVTSTRM, 0)        \
+  LINE(AARCH64_AES, aes, "aes", AARCH64_HWCAP_AES, 0)                        \
+  LINE(AARCH64_PMULL, pmull, "pmull", AARCH64_HWCAP_PMULL, 0)                \
+  LINE(AARCH64_SHA1, sha1, "sha1", AARCH64_HWCAP_SHA1, 0)                    \
+  LINE(AARCH64_SHA2, sha2, "sha2", AARCH64_HWCAP_SHA2, 0)                    \
+  LINE(AARCH64_CRC32, crc32, "crc32", AARCH64_HWCAP_CRC32, 0)                \
+  LINE(AARCH64_ATOMICS, atomics, "atomics", AARCH64_HWCAP_ATOMICS, 0)        \
+  LINE(AARCH64_FPHP, fphp, "fphp", AARCH64_HWCAP_FPHP, 0)                    \
+  LINE(AARCH64_ASIMDHP, asimdhp, "asimdhp", AARCH64_HWCAP_ASIMDHP, 0)        \
+  LINE(AARCH64_CPUID, cpuid, "cpuid", AARCH64_HWCAP_CPUID, 0)                \
+  LINE(AARCH64_ASIMDRDM, asimdrdm, "asimdrdm", AARCH64_HWCAP_ASIMDRDM, 0)    \
+  LINE(AARCH64_JSCVT, jscvt, "jscvt", AARCH64_HWCAP_JSCVT, 0)                \
+  LINE(AARCH64_FCMA, fcma, "fcma", AARCH64_HWCAP_FCMA, 0)                    \
+  LINE(AARCH64_LRCPC, lrcpc, "lrcpc", AARCH64_HWCAP_LRCPC, 0)                \
+  LINE(AARCH64_DCPOP, dcpop, "dcpop", AARCH64_HWCAP_DCPOP, 0)                \
+  LINE(AARCH64_SHA3, sha3, "sha3", AARCH64_HWCAP_SHA3, 0)                    \
+  LINE(AARCH64_SM3, sm3, "sm3", AARCH64_HWCAP_SM3, 0)                        \
+  LINE(AARCH64_SM4, sm4, "sm4", AARCH64_HWCAP_SM4, 0)                        \
+  LINE(AARCH64_ASIMDDP, asimddp, "asimddp", AARCH64_HWCAP_ASIMDDP, 0)        \
+  LINE(AARCH64_SHA512, sha512, "sha512", AARCH64_HWCAP_SHA512, 0)            \
+  LINE(AARCH64_SVE, sve, "sve", AARCH64_HWCAP_SVE, 0)                        \
+  LINE(AARCH64_ASIMDFHM, asimdfhm, "asimdfhm", AARCH64_HWCAP_ASIMDFHM, 0)    \
+  LINE(AARCH64_DIT, dit, "dit", AARCH64_HWCAP_DIT, 0)                        \
+  LINE(AARCH64_USCAT, uscat, "uscat", AARCH64_HWCAP_USCAT, 0)                \
+  LINE(AARCH64_ILRCPC, ilrcpc, "ilrcpc", AARCH64_HWCAP_ILRCPC, 0)            \
+  LINE(AARCH64_FLAGM, flagm, "flagm", AARCH64_HWCAP_FLAGM, 0)                \
+  LINE(AARCH64_SSBS, ssbs, "ssbs", AARCH64_HWCAP_SSBS, 0)                    \
+  LINE(AARCH64_SB, sb, "sb", AARCH64_HWCAP_SB, 0)                            \
+  LINE(AARCH64_PACA, paca, "paca", AARCH64_HWCAP_PACA, 0)                    \
+  LINE(AARCH64_PACG, pacg, "pacg", AARCH64_HWCAP_PACG, 0)                    \
+  LINE(AARCH64_DCPODP, dcpodp, "dcpodp", 0, AARCH64_HWCAP2_DCPODP)           \
+  LINE(AARCH64_SVE2, sve2, "sve2", 0, AARCH64_HWCAP2_SVE2)                   \
+  LINE(AARCH64_SVEAES, sveaes, "sveaes", 0, AARCH64_HWCAP2_SVEAES)           \
+  LINE(AARCH64_SVEPMULL, svepmull, "svepmull", 0, AARCH64_HWCAP2_SVEPMULL)   \
+  LINE(AARCH64_SVEBITPERM, svebitperm, "svebitperm", 0,                      \
+       AARCH64_HWCAP2_SVEBITPERM)                                            \
+  LINE(AARCH64_SVESHA3, svesha3, "svesha3", 0, AARCH64_HWCAP2_SVESHA3)       \
+  LINE(AARCH64_SVESM4, svesm4, "svesm4", 0, AARCH64_HWCAP2_SVESM4)           \
+  LINE(AARCH64_FLAGM2, flagm2, "flagm2", 0, AARCH64_HWCAP2_FLAGM2)           \
+  LINE(AARCH64_FRINT, frint, "frint", 0, AARCH64_HWCAP2_FRINT)               \
+  LINE(AARCH64_SVEI8MM, svei8mm, "svei8mm", 0, AARCH64_HWCAP2_SVEI8MM)       \
+  LINE(AARCH64_SVEF32MM, svef32mm, "svef32mm", 0, AARCH64_HWCAP2_SVEF32MM)   \
+  LINE(AARCH64_SVEF64MM, svef64mm, "svef64mm", 0, AARCH64_HWCAP2_SVEF64MM)   \
+  LINE(AARCH64_SVEBF16, svebf16, "svebf16", 0, AARCH64_HWCAP2_SVEBF16)       \
+  LINE(AARCH64_I8MM, i8mm, "i8mm", 0, AARCH64_HWCAP2_I8MM)                   \
+  LINE(AARCH64_BF16, bf16, "bf16", 0, AARCH64_HWCAP2_BF16)                   \
+  LINE(AARCH64_DGH, dgh, "dgh", 0, AARCH64_HWCAP2_DGH)                       \
+  LINE(AARCH64_RNG, rng, "rng", 0, AARCH64_HWCAP2_RNG)                       \
+  LINE(AARCH64_BTI, bti, "bti", 0, AARCH64_HWCAP2_BTI)                       \
+  LINE(AARCH64_MTE, mte, "mte", 0, AARCH64_HWCAP2_MTE)                       \
+  LINE(AARCH64_ECV, ecv, "ecv", 0, AARCH64_HWCAP2_ECV)                       \
+  LINE(AARCH64_AFP, afp, "afp", 0, AARCH64_HWCAP2_AFP)                       \
+  LINE(AARCH64_RPRES, rpres, "rpres", 0, AARCH64_HWCAP2_RPRES)               \
+  LINE(AARCH64_MTE3, mte3, "mte3", 0, AARCH64_HWCAP2_MTE3)                   \
+  LINE(AARCH64_SME, sme, "sme", 0, AARCH64_HWCAP2_SME)                       \
+  LINE(AARCH64_SME_I16I64, smei16i64, "smei16i64", 0,                        \
+       AARCH64_HWCAP2_SME_I16I64)                                            \
+  LINE(AARCH64_SME_F64F64, smef64f64, "smef64f64", 0,                        \
+       AARCH64_HWCAP2_SME_F64F64)                                            \
+  LINE(AARCH64_SME_I8I32, smei8i32, "smei8i32", 0, AARCH64_HWCAP2_SME_I8I32) \
+  LINE(AARCH64_SME_F16F32, smef16f32, "smef16f32", 0,                        \
+       AARCH64_HWCAP2_SME_F16F32)                                            \
+  LINE(AARCH64_SME_B16F32, smeb16f32, "smeb16f32", 0,                        \
+       AARCH64_HWCAP2_SME_B16F32)                                            \
+  LINE(AARCH64_SME_F32F32, smef32f32, "smef32f32", 0,                        \
+       AARCH64_HWCAP2_SME_F32F32)                                            \
+  LINE(AARCH64_SME_FA64, smefa64, "smefa64", 0, AARCH64_HWCAP2_SME_FA64)     \
+  LINE(AARCH64_WFXT, wfxt, "wfxt", 0, AARCH64_HWCAP2_WFXT)                   \
+  LINE(AARCH64_EBF16, ebf16, "ebf16", 0, AARCH64_HWCAP2_EBF16)               \
+  LINE(AARCH64_SVE_EBF16, sveebf16, "sveebf16", 0, AARCH64_HWCAP2_SVE_EBF16) \
+  LINE(AARCH64_CSSC, cssc, "cssc", 0, AARCH64_HWCAP2_CSSC)                   \
+  LINE(AARCH64_RPRFM, rprfm, "rprfm", 0, AARCH64_HWCAP2_RPRFM)               \
+  LINE(AARCH64_SVE2P1, sve2p1, "sve2p1", 0, AARCH64_HWCAP2_SVE2P1)           \
+  LINE(AARCH64_SME2, sme2, "sme2", 0, AARCH64_HWCAP2_SME2)                   \
+  LINE(AARCH64_SME2P1, sme2p1, "sme2p1", 0, AARCH64_HWCAP2_SME2P1)           \
+  LINE(AARCH64_SME_I16I32, smei16i32, "smei16i32", 0,                        \
+       AARCH64_HWCAP2_SME_I16I32)                                            \
+  LINE(AARCH64_SME_BI32I32, smebi32i32, "smebi32i32", 0,                     \
+       AARCH64_HWCAP2_SME_BI32I32)                                           \
+  LINE(AARCH64_SME_B16B16, smeb16b16, "smeb16b16", 0,                        \
+       AARCH64_HWCAP2_SME_B16B16)                                            \
+  LINE(AARCH64_SME_F16F16, smef16f16, "smef16f16", 0, AARCH64_HWCAP2_SME_F16F16)
+#define INTROSPECTION_PREFIX Aarch64
+#define INTROSPECTION_ENUM_PREFIX AARCH64
+#include "define_introspection_and_hwcaps.inl"
@@ -0,0 +1,79 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_AARCH64
+#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+
+#include "impl_aarch64__base_implementation.inl"
+
+static bool HandleAarch64Line(const LineResult result,
+                              Aarch64Info* const info) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("Features"))) {
+      for (size_t i = 0; i < AARCH64_LAST_; ++i) {
+        kSetters[i](&info->features, CpuFeatures_StringView_HasWord(
+                                         value, kCpuInfoFlags[i], ' '));
+      }
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU implementer"))) {
+      info->implementer = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU variant"))) {
+      info->variant = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU part"))) {
+      info->part = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU revision"))) {
+      info->revision = CpuFeatures_StringView_ParsePositiveNumber(value);
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(Aarch64Info* const info) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleAarch64Line(StackLineReader_NextLine(&reader), info)) {
+        break;
+      }
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+static const Aarch64Info kEmptyAarch64Info;
+
+Aarch64Info GetAarch64Info(void) {
+  // capabilities are fetched from both getauxval and /proc/cpuinfo so we can
+  // have some information if the executable is sandboxed (aka no access to
+  // /proc/cpuinfo).
+  Aarch64Info info = kEmptyAarch64Info;
+
+  FillProcCpuInfoData(&info);
+  const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
+  for (size_t i = 0; i < AARCH64_LAST_; ++i) {
+    if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
+      kSetters[i](&info.features, true);
+    }
+  }
+
+  return info;
+}
+
+#endif  // defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+#endif  // CPU_FEATURES_ARCH_AARCH64
@@ -0,0 +1,88 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_AARCH64
+#if defined(CPU_FEATURES_OS_MACOS) || defined(CPU_FEATURES_OS_IPHONE)
+
+#include "impl_aarch64__base_implementation.inl"
+
+#if !defined(HAVE_SYSCTLBYNAME)
+#error "Darwin needs support for sysctlbyname"
+#endif
+#include <sys/sysctl.h>
+
+#if defined(CPU_FEATURES_MOCK_SYSCTL_AARCH64)
+extern bool GetDarwinSysCtlByName(const char*);
+extern int GetDarwinSysCtlByNameValue(const char* name);
+#else
+static int GetDarwinSysCtlByNameValue(const char* name) {
+  int enabled;
+  size_t enabled_len = sizeof(enabled);
+  const int failure = sysctlbyname(name, &enabled, &enabled_len, NULL, 0);
+  return failure ? 0 : enabled;
+}
+
+static bool GetDarwinSysCtlByName(const char* name) {
+  return GetDarwinSysCtlByNameValue(name) != 0;
+}
+#endif
+
+static const Aarch64Info kEmptyAarch64Info;
+
+Aarch64Info GetAarch64Info(void) {
+  Aarch64Info info = kEmptyAarch64Info;
+
+  // Handling Darwin platform through sysctlbyname.
+  info.implementer = GetDarwinSysCtlByNameValue("hw.cputype");
+  info.variant = GetDarwinSysCtlByNameValue("hw.cpusubtype");
+  info.part = GetDarwinSysCtlByNameValue("hw.cpufamily");
+  info.revision = GetDarwinSysCtlByNameValue("hw.cpusubfamily");
+
+  info.features.fp = GetDarwinSysCtlByName("hw.optional.floatingpoint");
+  info.features.asimd = GetDarwinSysCtlByName("hw.optional.AdvSIMD");
+  info.features.aes = GetDarwinSysCtlByName("hw.optional.arm.FEAT_AES");
+  info.features.pmull = GetDarwinSysCtlByName("hw.optional.arm.FEAT_PMULL");
+  info.features.sha1 = GetDarwinSysCtlByName("hw.optional.arm.FEAT_SHA1");
+  info.features.sha2 = GetDarwinSysCtlByName("hw.optional.arm.FEAT_SHA256");
+  info.features.crc32 = GetDarwinSysCtlByName("hw.optional.armv8_crc32");
+  info.features.atomics = GetDarwinSysCtlByName("hw.optional.arm.FEAT_LSE");
+  info.features.fphp = GetDarwinSysCtlByName("hw.optional.arm.FEAT_FP16");
+  info.features.asimdhp = GetDarwinSysCtlByName("hw.optional.arm.AdvSIMD_HPFPCvt");
+  info.features.asimdrdm = GetDarwinSysCtlByName("hw.optional.arm.FEAT_RDM");
+  info.features.jscvt = GetDarwinSysCtlByName("hw.optional.arm.FEAT_JSCVT");
+  info.features.fcma = GetDarwinSysCtlByName("hw.optional.arm.FEAT_FCMA");
+  info.features.lrcpc = GetDarwinSysCtlByName("hw.optional.arm.FEAT_LRCPC");
+  info.features.dcpop = GetDarwinSysCtlByName("hw.optional.arm.FEAT_DPB");
+  info.features.sha3 = GetDarwinSysCtlByName("hw.optional.arm.FEAT_SHA3");
+  info.features.asimddp = GetDarwinSysCtlByName("hw.optional.arm.FEAT_DotProd");
+  info.features.sha512 = GetDarwinSysCtlByName("hw.optional.arm.FEAT_SHA512");
+  info.features.asimdfhm = GetDarwinSysCtlByName("hw.optional.arm.FEAT_FHM");
+  info.features.dit = GetDarwinSysCtlByName("hw.optional.arm.FEAT_DIT");
+  info.features.uscat = GetDarwinSysCtlByName("hw.optional.arm.FEAT_LSE2");
+  info.features.flagm = GetDarwinSysCtlByName("hw.optional.arm.FEAT_FlagM");
+  info.features.ssbs = GetDarwinSysCtlByName("hw.optional.arm.FEAT_SSBS");
+  info.features.sb = GetDarwinSysCtlByName("hw.optional.arm.FEAT_SB");
+  info.features.flagm2 = GetDarwinSysCtlByName("hw.optional.arm.FEAT_FlagM2");
+  info.features.frint = GetDarwinSysCtlByName("hw.optional.arm.FEAT_FRINTTS");
+  info.features.i8mm = GetDarwinSysCtlByName("hw.optional.arm.FEAT_I8MM");
+  info.features.bf16 = GetDarwinSysCtlByName("hw.optional.arm.FEAT_BF16");
+  info.features.bti = GetDarwinSysCtlByName("hw.optional.arm.FEAT_BTI");
+
+  return info;
+}
+
+#endif  // defined(CPU_FEATURES_OS_MACOS) || defined(CPU_FEATURES_OS_IPHONE)
+#endif  // CPU_FEATURES_ARCH_AARCH64
@@ -0,0 +1,138 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_AARCH64
+#ifdef CPU_FEATURES_OS_WINDOWS
+
+#include "cpuinfo_aarch64.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                  \
+  LINE(AARCH64_FP, fp, , , )                 \
+  LINE(AARCH64_ASIMD, asimd, , , )           \
+  LINE(AARCH64_EVTSTRM, evtstrm, , , )       \
+  LINE(AARCH64_AES, aes, , , )               \
+  LINE(AARCH64_PMULL, pmull, , , )           \
+  LINE(AARCH64_SHA1, sha1, , , )             \
+  LINE(AARCH64_SHA2, sha2, , , )             \
+  LINE(AARCH64_CRC32, crc32, , , )           \
+  LINE(AARCH64_ATOMICS, atomics, , , )       \
+  LINE(AARCH64_FPHP, fphp, , , )             \
+  LINE(AARCH64_ASIMDHP, asimdhp, , , )       \
+  LINE(AARCH64_CPUID, cpuid, , , )           \
+  LINE(AARCH64_ASIMDRDM, asimdrdm, , , )     \
+  LINE(AARCH64_JSCVT, jscvt, , , )           \
+  LINE(AARCH64_FCMA, fcma, , , )             \
+  LINE(AARCH64_LRCPC, lrcpc, , , )           \
+  LINE(AARCH64_DCPOP, dcpop, , , )           \
+  LINE(AARCH64_SHA3, sha3, , , )             \
+  LINE(AARCH64_SM3, sm3, , , )               \
+  LINE(AARCH64_SM4, sm4, , , )               \
+  LINE(AARCH64_ASIMDDP, asimddp, , , )       \
+  LINE(AARCH64_SHA512, sha512, , , )         \
+  LINE(AARCH64_SVE, sve, , , )               \
+  LINE(AARCH64_ASIMDFHM, asimdfhm, , , )     \
+  LINE(AARCH64_DIT, dit, , , )               \
+  LINE(AARCH64_USCAT, uscat, , , )           \
+  LINE(AARCH64_ILRCPC, ilrcpc, , , )         \
+  LINE(AARCH64_FLAGM, flagm, , , )           \
+  LINE(AARCH64_SSBS, ssbs, , , )             \
+  LINE(AARCH64_SB, sb, , , )                 \
+  LINE(AARCH64_PACA, paca, , , )             \
+  LINE(AARCH64_PACG, pacg, , , )             \
+  LINE(AARCH64_DCPODP, dcpodp, , , )         \
+  LINE(AARCH64_SVE2, sve2, , , )             \
+  LINE(AARCH64_SVEAES, sveaes, , , )         \
+  LINE(AARCH64_SVEPMULL, svepmull, , , )     \
+  LINE(AARCH64_SVEBITPERM, svebitperm, , , ) \
+  LINE(AARCH64_SVESHA3, svesha3, , , )       \
+  LINE(AARCH64_SVESM4, svesm4, , , )         \
+  LINE(AARCH64_FLAGM2, flagm2, , , )         \
+  LINE(AARCH64_FRINT, frint, , , )           \
+  LINE(AARCH64_SVEI8MM, svei8mm, , , )       \
+  LINE(AARCH64_SVEF32MM, svef32mm, , , )     \
+  LINE(AARCH64_SVEF64MM, svef64mm, , , )     \
+  LINE(AARCH64_SVEBF16, svebf16, , , )       \
+  LINE(AARCH64_I8MM, i8mm, , , )             \
+  LINE(AARCH64_BF16, bf16, , , )             \
+  LINE(AARCH64_DGH, dgh, , , )               \
+  LINE(AARCH64_RNG, rng, , , )               \
+  LINE(AARCH64_BTI, bti, , , )               \
+  LINE(AARCH64_MTE, mte, , , )               \
+  LINE(AARCH64_ECV, ecv, , , )               \
+  LINE(AARCH64_AFP, afp, , , )               \
+  LINE(AARCH64_RPRES, rpres, , , )
+#define INTROSPECTION_PREFIX Aarch64
+#define INTROSPECTION_ENUM_PREFIX AARCH64
+#include "define_introspection.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include <stdbool.h>
+
+#include "internal/windows_utils.h"
+
+#ifdef CPU_FEATURES_MOCK_CPUID_AARCH64
+extern bool GetWindowsIsProcessorFeaturePresent(DWORD);
+extern WORD GetWindowsNativeSystemInfoProcessorRevision();
+#else  // CPU_FEATURES_MOCK_CPUID_AARCH64
+static bool GetWindowsIsProcessorFeaturePresent(DWORD dwProcessorFeature) {
+  return IsProcessorFeaturePresent(dwProcessorFeature);
+}
+
+static WORD GetWindowsNativeSystemInfoProcessorRevision() {
+  SYSTEM_INFO system_info;
+  GetNativeSystemInfo(&system_info);
+  return system_info.wProcessorRevision;
+}
+#endif
+
+static const Aarch64Info kEmptyAarch64Info;
+
+Aarch64Info GetAarch64Info(void) {
+  Aarch64Info info = kEmptyAarch64Info;
+  info.revision = GetWindowsNativeSystemInfoProcessorRevision();
+  info.features.fp =
+      GetWindowsIsProcessorFeaturePresent(PF_ARM_VFP_32_REGISTERS_AVAILABLE);
+  info.features.asimd =
+      GetWindowsIsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE);
+  info.features.crc32 = GetWindowsIsProcessorFeaturePresent(
+      PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE);
+  info.features.asimddp =
+      GetWindowsIsProcessorFeaturePresent(PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE);
+  info.features.jscvt = GetWindowsIsProcessorFeaturePresent(
+      PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE);
+  info.features.lrcpc = GetWindowsIsProcessorFeaturePresent(
+      PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE);
+  info.features.atomics = GetWindowsIsProcessorFeaturePresent(
+      PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE);
+
+
+  bool is_crypto_available = GetWindowsIsProcessorFeaturePresent(
+      PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE);
+  info.features.aes = is_crypto_available;
+  info.features.sha1 = is_crypto_available;
+  info.features.sha2 = is_crypto_available;
+  info.features.pmull = is_crypto_available;
+  return info;
+}
+
+#endif  // CPU_FEATURES_OS_WINDOWS
+#endif  // CPU_FEATURES_ARCH_AARCH64
@@ -0,0 +1,212 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_ARM
+#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+
+#include "cpuinfo_arm.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                                        \
+  LINE(ARM_SWP, swp, "swp", ARM_HWCAP_SWP, 0)                      \
+  LINE(ARM_HALF, half, "half", ARM_HWCAP_HALF, 0)                  \
+  LINE(ARM_THUMB, thumb, "thumb", ARM_HWCAP_THUMB, 0)              \
+  LINE(ARM_26BIT, _26bit, "26bit", ARM_HWCAP_26BIT, 0)             \
+  LINE(ARM_FASTMULT, fastmult, "fastmult", ARM_HWCAP_FAST_MULT, 0) \
+  LINE(ARM_FPA, fpa, "fpa", ARM_HWCAP_FPA, 0)                      \
+  LINE(ARM_VFP, vfp, "vfp", ARM_HWCAP_VFP, 0)                      \
+  LINE(ARM_EDSP, edsp, "edsp", ARM_HWCAP_EDSP, 0)                  \
+  LINE(ARM_JAVA, java, "java", ARM_HWCAP_JAVA, 0)                  \
+  LINE(ARM_IWMMXT, iwmmxt, "iwmmxt", ARM_HWCAP_IWMMXT, 0)          \
+  LINE(ARM_CRUNCH, crunch, "crunch", ARM_HWCAP_CRUNCH, 0)          \
+  LINE(ARM_THUMBEE, thumbee, "thumbee", ARM_HWCAP_THUMBEE, 0)      \
+  LINE(ARM_NEON, neon, "neon", ARM_HWCAP_NEON, 0)                  \
+  LINE(ARM_VFPV3, vfpv3, "vfpv3", ARM_HWCAP_VFPV3, 0)              \
+  LINE(ARM_VFPV3D16, vfpv3d16, "vfpv3d16", ARM_HWCAP_VFPV3D16, 0)  \
+  LINE(ARM_TLS, tls, "tls", ARM_HWCAP_TLS, 0)                      \
+  LINE(ARM_VFPV4, vfpv4, "vfpv4", ARM_HWCAP_VFPV4, 0)              \
+  LINE(ARM_IDIVA, idiva, "idiva", ARM_HWCAP_IDIVA, 0)              \
+  LINE(ARM_IDIVT, idivt, "idivt", ARM_HWCAP_IDIVT, 0)              \
+  LINE(ARM_VFPD32, vfpd32, "vfpd32", ARM_HWCAP_VFPD32, 0)          \
+  LINE(ARM_LPAE, lpae, "lpae", ARM_HWCAP_LPAE, 0)                  \
+  LINE(ARM_EVTSTRM, evtstrm, "evtstrm", ARM_HWCAP_EVTSTRM, 0)      \
+  LINE(ARM_AES, aes, "aes", 0, ARM_HWCAP2_AES)                     \
+  LINE(ARM_PMULL, pmull, "pmull", 0, ARM_HWCAP2_PMULL)             \
+  LINE(ARM_SHA1, sha1, "sha1", 0, ARM_HWCAP2_SHA1)                 \
+  LINE(ARM_SHA2, sha2, "sha2", 0, ARM_HWCAP2_SHA2)                 \
+  LINE(ARM_CRC32, crc32, "crc32", 0, ARM_HWCAP2_CRC32)
+#define INTROSPECTION_PREFIX Arm
+#define INTROSPECTION_ENUM_PREFIX ARM
+#include "define_introspection_and_hwcaps.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include <ctype.h>
+#include <stdbool.h>
+
+#include "internal/bit_utils.h"
+#include "internal/filesystem.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+typedef struct {
+  bool processor_reports_armv6;
+  bool hardware_reports_goldfish;
+} ProcCpuInfoData;
+
+static int IndexOfNonDigit(StringView str) {
+  size_t index = 0;
+  while (str.size && isdigit(CpuFeatures_StringView_Front(str))) {
+    str = CpuFeatures_StringView_PopFront(str, 1);
+    ++index;
+  }
+  return index;
+}
+
+static bool HandleArmLine(const LineResult result, ArmInfo* const info,
+                          ProcCpuInfoData* const proc_info) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("Features"))) {
+      for (size_t i = 0; i < ARM_LAST_; ++i) {
+        kSetters[i](&info->features, CpuFeatures_StringView_HasWord(
+                                         value, kCpuInfoFlags[i], ' '));
+      }
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU implementer"))) {
+      info->implementer = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU variant"))) {
+      info->variant = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU part"))) {
+      info->part = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU revision"))) {
+      info->revision = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU architecture"))) {
+      // CPU architecture is a number that may be followed by letters. e.g.
+      // "6TEJ", "7".
+      const StringView digits =
+          CpuFeatures_StringView_KeepFront(value, IndexOfNonDigit(value));
+      info->architecture = CpuFeatures_StringView_ParsePositiveNumber(digits);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("Processor")) ||
+               CpuFeatures_StringView_IsEquals(key, str("model name"))) {
+      // Android reports this in a non-Linux standard "Processor" but sometimes
+      // also in "model name", Linux reports it only in "model name"
+      // see RaspberryPiZero (Linux) vs InvalidArmv7 (Android) test-cases
+      proc_info->processor_reports_armv6 =
+          CpuFeatures_StringView_IndexOf(value, str("(v6l)")) >= 0;
+    } else if (CpuFeatures_StringView_IsEquals(key, str("Hardware"))) {
+      proc_info->hardware_reports_goldfish =
+          CpuFeatures_StringView_IsEquals(value, str("Goldfish"));
+    }
+  }
+  return !result.eof;
+}
+
+uint32_t GetArmCpuId(const ArmInfo* const info) {
+  return (ExtractBitRange(info->implementer, 7, 0) << 24) |
+         (ExtractBitRange(info->variant, 3, 0) << 20) |
+         (ExtractBitRange(info->part, 11, 0) << 4) |
+         (ExtractBitRange(info->revision, 3, 0) << 0);
+}
+
+static void FixErrors(ArmInfo* const info,
+                      ProcCpuInfoData* const proc_cpu_info_data) {
+  // Fixing Samsung kernel reporting invalid cpu architecture.
+  // http://code.google.com/p/android/issues/detail?id=10812
+  if (proc_cpu_info_data->processor_reports_armv6 && info->architecture >= 7) {
+    info->architecture = 6;
+  }
+
+  // Handle kernel configuration bugs that prevent the correct reporting of CPU
+  // features.
+  switch (GetArmCpuId(info)) {
+    case 0x4100C080:
+      // Special case: The emulator-specific Android 4.2 kernel fails to report
+      // support for the 32-bit ARM IDIV instruction. Technically, this is a
+      // feature of the virtual CPU implemented by the emulator. Note that it
+      // could also support Thumb IDIV in the future, and this will have to be
+      // slightly updated.
+      if (info->architecture >= 7 &&
+          proc_cpu_info_data->hardware_reports_goldfish) {
+        info->features.idiva = true;
+      }
+      break;
+    case 0x511004D0:
+      // https://crbug.com/341598.
+      info->features.neon = false;
+      break;
+  }
+
+  // Some Qualcomm Krait kernels forget to report IDIV support.
+  // https://github.com/torvalds/linux/commit/120ecfafabec382c4feb79ff159ef42a39b6d33b
+  if (info->implementer == 0x51 && info->architecture == 7 &&
+      (info->part == 0x4d || info->part == 0x6f)) {
+    info->features.idiva = true;
+    info->features.idivt = true;
+  }
+
+  // Propagate cpu features.
+  if (info->features.vfpv4) info->features.vfpv3 = true;
+  if (info->features.neon) info->features.vfpv3 = true;
+  if (info->features.vfpv3) info->features.vfp = true;
+}
+
+static void FillProcCpuInfoData(ArmInfo* const info,
+                                ProcCpuInfoData* proc_cpu_info_data) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleArmLine(StackLineReader_NextLine(&reader), info,
+                         proc_cpu_info_data)) {
+        break;
+      }
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+static const ArmInfo kEmptyArmInfo;
+
+static const ProcCpuInfoData kEmptyProcCpuInfoData;
+
+ArmInfo GetArmInfo(void) {
+  // capabilities are fetched from both getauxval and /proc/cpuinfo so we can
+  // have some information if the executable is sandboxed (aka no access to
+  // /proc/cpuinfo).
+  ArmInfo info = kEmptyArmInfo;
+  ProcCpuInfoData proc_cpu_info_data = kEmptyProcCpuInfoData;
+
+  FillProcCpuInfoData(&info, &proc_cpu_info_data);
+  const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
+  for (size_t i = 0; i < ARM_LAST_; ++i) {
+    if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
+      kSetters[i](&info.features, true);
+    }
+  }
+
+  FixErrors(&info, &proc_cpu_info_data);
+
+  return info;
+}
+
+#endif  // defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+#endif  // CPU_FEATURES_ARCH_ARM
@@ -0,0 +1,89 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_LOONGARCH
+#if defined(CPU_FEATURES_OS_LINUX)
+
+#include "cpuinfo_loongarch.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                            \
+  LINE(LOONGARCH_CPUCFG, CPUCFG, "cfg", HWCAP_LOONGARCH_CPUCFG, 0) \
+  LINE(LOONGARCH_LAM, LAM, "lam", HWCAP_LOONGARCH_LAM, 0) \
+  LINE(LOONGARCH_UAL, UAL, "ual", HWCAP_LOONGARCH_UAL, 0) \
+  LINE(LOONGARCH_FPU, FPU, "fpu", HWCAP_LOONGARCH_FPU, 0) \
+  LINE(LOONGARCH_LSX, LSX, "lsx", HWCAP_LOONGARCH_LSX, 0) \
+  LINE(LOONGARCH_LASX, LASX, "lasx", HWCAP_LOONGARCH_LASX, 0) \
+  LINE(LOONGARCH_CRC32, CRC32, "crc32", HWCAP_LOONGARCH_CRC32, 0) \
+  LINE(LOONGARCH_COMPLEX, COMPLEX, "complex", HWCAP_LOONGARCH_COMPLEX, 0) \
+  LINE(LOONGARCH_CRYPTO, CRYPTO, "crypto", HWCAP_LOONGARCH_CRYPTO, 0) \
+  LINE(LOONGARCH_LVZ, LVZ, "lvz", HWCAP_LOONGARCH_LVZ, 0) \
+  LINE(LOONGARCH_LBT_X86, LBT_X86, "lbt_x86", HWCAP_LOONGARCH_LBT_X86, 0) \
+  LINE(LOONGARCH_LBT_ARM, LBT_ARM, "lbt_arm", HWCAP_LOONGARCH_LBT_ARM, 0) \
+  LINE(LOONGARCH_LBT_MIPS, LBT_MIPS, "lbt_mips", HWCAP_LOONGARCH_LBT_MIPS, 0) \
+  LINE(LOONGARCH_PTW, PTW, "ptw", HWCAP_LOONGARCH_PTW, 0)
+#define INTROSPECTION_PREFIX LoongArch
+#define INTROSPECTION_ENUM_PREFIX LOONGARCH
+#include "define_introspection_and_hwcaps.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "internal/filesystem.h"
+#include "internal/stack_line_reader.h"
+
+static const LoongArchInfo kEmptyLoongArchInfo;
+
+static bool HandleLoongArchLine(const LineResult result, LoongArchInfo* const info) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("Features"))) {
+      for (size_t i = 0; i < LOONGARCH_LAST_; ++i) {
+        kSetters[i](&info->features, CpuFeatures_StringView_HasWord(
+                                         value, kCpuInfoFlags[i], ' '));
+      }
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(LoongArchInfo* const info) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleLoongArchLine(StackLineReader_NextLine(&reader), info)) break;
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+LoongArchInfo GetLoongArchInfo(void) {
+  LoongArchInfo info = kEmptyLoongArchInfo;
+  FillProcCpuInfoData(&info);
+  return info;
+}
+
+#endif  // defined(CPU_FEATURES_OS_LINUX)
+#endif  // CPU_FEATURES_ARCH_LOONGARCH
@@ -0,0 +1,93 @@
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_MIPS
+#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+
+#include "cpuinfo_mips.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                                     \
+  LINE(MIPS_MSA, msa, "msa", MIPS_HWCAP_MSA, 0)                 \
+  LINE(MIPS_EVA, eva, "eva", 0, 0)                              \
+  LINE(MIPS_R6, r6, "r6", MIPS_HWCAP_R6, 0)                     \
+  LINE(MIPS_MIPS16, mips16, "mips16", MIPS_HWCAP_MIPS16, 0)     \
+  LINE(MIPS_MDMX, mdmx, "mdmx", MIPS_HWCAP_MDMX, 0)             \
+  LINE(MIPS_MIPS3D, mips3d, "mips3d", MIPS_HWCAP_MIPS3D, 0)     \
+  LINE(MIPS_SMART, smart, "smartmips", MIPS_HWCAP_SMARTMIPS, 0) \
+  LINE(MIPS_DSP, dsp, "dsp", MIPS_HWCAP_DSP, 0)
+#define INTROSPECTION_PREFIX Mips
+#define INTROSPECTION_ENUM_PREFIX MIPS
+#include "define_introspection_and_hwcaps.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include "internal/filesystem.h"
+#include "internal/hwcaps.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+static bool HandleMipsLine(const LineResult result,
+                           MipsFeatures* const features) {
+  StringView key, value;
+  // See tests for an example.
+  if (CpuFeatures_StringView_GetAttributeKeyValue(result.line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("ASEs implemented"))) {
+      for (size_t i = 0; i < MIPS_LAST_; ++i) {
+        kSetters[i](features, CpuFeatures_StringView_HasWord(
+                                  value, kCpuInfoFlags[i], ' '));
+      }
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(MipsFeatures* const features) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleMipsLine(StackLineReader_NextLine(&reader), features)) {
+        break;
+      }
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+static const MipsInfo kEmptyMipsInfo;
+
+MipsInfo GetMipsInfo(void) {
+  // capabilities are fetched from both getauxval and /proc/cpuinfo so we can
+  // have some information if the executable is sandboxed (aka no access to
+  // /proc/cpuinfo).
+  MipsInfo info = kEmptyMipsInfo;
+
+  FillProcCpuInfoData(&info.features);
+  const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
+  for (size_t i = 0; i < MIPS_LAST_; ++i) {
+    if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
+      kSetters[i](&info.features, true);
+    }
+  }
+  return info;
+}
+
+#endif  //  defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+#endif  // CPU_FEATURES_ARCH_MIPS
@@ -0,0 +1,163 @@
+// Copyright 2018 IBM.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_PPC
+#ifdef CPU_FEATURES_OS_LINUX
+
+#include "cpuinfo_ppc.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                                                    \
+  LINE(PPC_32, ppc32, "ppc32", PPC_FEATURE_32, 0)                              \
+  LINE(PPC_64, ppc64, "ppc64", PPC_FEATURE_64, 0)                              \
+  LINE(PPC_601_INSTR, ppc601, "ppc601", PPC_FEATURE_601_INSTR, 0)              \
+  LINE(PPC_HAS_ALTIVEC, altivec, "altivec", PPC_FEATURE_HAS_ALTIVEC, 0)        \
+  LINE(PPC_HAS_FPU, fpu, "fpu", PPC_FEATURE_HAS_FPU, 0)                        \
+  LINE(PPC_HAS_MMU, mmu, "mmu", PPC_FEATURE_HAS_MMU, 0)                        \
+  LINE(PPC_HAS_4xxMAC, mac_4xx, "4xxmac", PPC_FEATURE_HAS_4xxMAC, 0)           \
+  LINE(PPC_UNIFIED_CACHE, unifiedcache, "ucache", PPC_FEATURE_UNIFIED_CACHE,   \
+       0)                                                                      \
+  LINE(PPC_HAS_SPE, spe, "spe", PPC_FEATURE_HAS_SPE, 0)                        \
+  LINE(PPC_HAS_EFP_SINGLE, efpsingle, "efpsingle", PPC_FEATURE_HAS_EFP_SINGLE, \
+       0)                                                                      \
+  LINE(PPC_HAS_EFP_DOUBLE, efpdouble, "efpdouble", PPC_FEATURE_HAS_EFP_DOUBLE, \
+       0)                                                                      \
+  LINE(PPC_NO_TB, no_tb, "notb", PPC_FEATURE_NO_TB, 0)                         \
+  LINE(PPC_POWER4, power4, "power4", PPC_FEATURE_POWER4, 0)                    \
+  LINE(PPC_POWER5, power5, "power5", PPC_FEATURE_POWER5, 0)                    \
+  LINE(PPC_POWER5_PLUS, power5plus, "power5+", PPC_FEATURE_POWER5_PLUS, 0)     \
+  LINE(PPC_CELL, cell, "cellbe", PPC_FEATURE_CELL, 0)                          \
+  LINE(PPC_BOOKE, booke, "booke", PPC_FEATURE_BOOKE, 0)                        \
+  LINE(PPC_SMT, smt, "smt", PPC_FEATURE_SMT, 0)                                \
+  LINE(PPC_ICACHE_SNOOP, icachesnoop, "ic_snoop", PPC_FEATURE_ICACHE_SNOOP, 0) \
+  LINE(PPC_ARCH_2_05, arch205, "arch_2_05", PPC_FEATURE_ARCH_2_05, 0)          \
+  LINE(PPC_PA6T, pa6t, "pa6t", PPC_FEATURE_PA6T, 0)                            \
+  LINE(PPC_HAS_DFP, dfp, "dfp", PPC_FEATURE_HAS_DFP, 0)                        \
+  LINE(PPC_POWER6_EXT, power6ext, "power6x", PPC_FEATURE_POWER6_EXT, 0)        \
+  LINE(PPC_ARCH_2_06, arch206, "arch_2_06", PPC_FEATURE_ARCH_2_06, 0)          \
+  LINE(PPC_HAS_VSX, vsx, "vsx", PPC_FEATURE_HAS_VSX, 0)                        \
+  LINE(PPC_PSERIES_PERFMON_COMPAT, pseries_perfmon_compat, "archpmu",          \
+       PPC_FEATURE_PSERIES_PERFMON_COMPAT, 0)                                  \
+  LINE(PPC_TRUE_LE, truele, "true_le", PPC_FEATURE_TRUE_LE, 0)                 \
+  LINE(PPC_PPC_LE, ppcle, "ppcle", PPC_FEATURE_PPC_LE, 0)                      \
+  LINE(PPC_ARCH_2_07, arch207, "arch_2_07", 0, PPC_FEATURE2_ARCH_2_07)         \
+  LINE(PPC_HTM, htm, "htm", 0, PPC_FEATURE2_HTM)                               \
+  LINE(PPC_DSCR, dscr, "dscr", 0, PPC_FEATURE2_DSCR)                           \
+  LINE(PPC_EBB, ebb, "ebb", 0, PPC_FEATURE2_EBB)                               \
+  LINE(PPC_ISEL, isel, "isel", 0, PPC_FEATURE2_ISEL)                           \
+  LINE(PPC_TAR, tar, "tar", 0, PPC_FEATURE2_TAR)                               \
+  LINE(PPC_VEC_CRYPTO, vcrypto, "vcrypto", 0, PPC_FEATURE2_VEC_CRYPTO)         \
+  LINE(PPC_HTM_NOSC, htm_nosc, "htm-nosc", 0, PPC_FEATURE2_HTM_NOSC)           \
+  LINE(PPC_ARCH_3_00, arch300, "arch_3_00", 0, PPC_FEATURE2_ARCH_3_00)         \
+  LINE(PPC_HAS_IEEE128, ieee128, "ieee128", 0, PPC_FEATURE2_HAS_IEEE128)       \
+  LINE(PPC_DARN, darn, "darn", 0, PPC_FEATURE2_DARN)                           \
+  LINE(PPC_SCV, scv, "scv", 0, PPC_FEATURE2_SCV)                               \
+  LINE(PPC_HTM_NO_SUSPEND, htm_no_suspend, "htm-no-suspend", 0,                \
+       PPC_FEATURE2_HTM_NO_SUSPEND)
+#undef PPC // Remove conflict with compiler generated preprocessor
+#define INTROSPECTION_PREFIX PPC
+#define INTROSPECTION_ENUM_PREFIX PPC
+#include "define_introspection_and_hwcaps.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include <stdbool.h>
+
+#include "internal/bit_utils.h"
+#include "internal/filesystem.h"
+#include "internal/hwcaps.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+static bool HandlePPCLine(const LineResult result,
+                          PPCPlatformStrings* const strings) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_HasWord(key, "platform", ' ')) {
+      CpuFeatures_StringView_CopyString(value, strings->platform,
+                                        sizeof(strings->platform));
+    } else if (CpuFeatures_StringView_IsEquals(key, str("model"))) {
+      CpuFeatures_StringView_CopyString(value, strings->model,
+                                        sizeof(strings->platform));
+    } else if (CpuFeatures_StringView_IsEquals(key, str("machine"))) {
+      CpuFeatures_StringView_CopyString(value, strings->machine,
+                                        sizeof(strings->platform));
+    } else if (CpuFeatures_StringView_IsEquals(key, str("cpu"))) {
+      CpuFeatures_StringView_CopyString(value, strings->cpu,
+                                        sizeof(strings->platform));
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(PPCPlatformStrings* const strings) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandlePPCLine(StackLineReader_NextLine(&reader), strings)) {
+        break;
+      }
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+static const PPCInfo kEmptyPPCInfo;
+
+PPCInfo GetPPCInfo(void) {
+  /*
+   * On Power feature flags aren't currently in cpuinfo so we only look at
+   * the auxilary vector.
+   */
+  PPCInfo info = kEmptyPPCInfo;
+  const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
+  for (size_t i = 0; i < PPC_LAST_; ++i) {
+    if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
+      kSetters[i](&info.features, true);
+    }
+  }
+  return info;
+}
+
+static const PPCPlatformStrings kEmptyPPCPlatformStrings;
+
+PPCPlatformStrings GetPPCPlatformStrings(void) {
+  PPCPlatformStrings strings = kEmptyPPCPlatformStrings;
+  const char* platform = CpuFeatures_GetPlatformPointer();
+  const char* base_platform = CpuFeatures_GetBasePlatformPointer();
+
+  FillProcCpuInfoData(&strings);
+
+  if (platform != NULL)
+    CpuFeatures_StringView_CopyString(str(platform), strings.type.platform,
+                                      sizeof(strings.type.platform));
+  if (base_platform != NULL)
+    CpuFeatures_StringView_CopyString(str(base_platform),
+                                      strings.type.base_platform,
+                                      sizeof(strings.type.base_platform));
+
+  return strings;
+}
+
+#endif  // CPU_FEATURES_OS_LINUX
+#endif  // CPU_FEATURES_ARCH_PPC
@@ -0,0 +1,111 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_RISCV
+#if defined(CPU_FEATURES_OS_LINUX)
+
+#include "cpuinfo_riscv.h"
+
+// According to
+// https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/riscv/cpus.yaml
+// isa string should match the following regex
+// ^rv(?:64|32)imaf?d?q?c?b?v?k?h?(?:_[hsxz](?:[a-z])+)*$
+//
+// This means we can test for features in this exact order except for Z
+// extensions.
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                            \
+  LINE(RISCV_RV32I, RV32I, "rv32i", RISCV_HWCAP_32, 0) \
+  LINE(RISCV_RV64I, RV64I, "rv64i", RISCV_HWCAP_64, 0) \
+  LINE(RISCV_M, M, "m", RISCV_HWCAP_M, 0)              \
+  LINE(RISCV_A, A, "a", RISCV_HWCAP_A, 0)              \
+  LINE(RISCV_F, F, "f", RISCV_HWCAP_F, 0)              \
+  LINE(RISCV_D, D, "d", RISCV_HWCAP_D, 0)              \
+  LINE(RISCV_Q, Q, "q", RISCV_HWCAP_Q, 0)              \
+  LINE(RISCV_C, C, "c", RISCV_HWCAP_C, 0)              \
+  LINE(RISCV_V, V, "v", RISCV_HWCAP_V, 0)              \
+  LINE(RISCV_Zicsr, Zicsr, "_zicsr", 0, 0)             \
+  LINE(RISCV_Zifencei, Zifencei, "_zifencei", 0, 0)
+#define INTROSPECTION_PREFIX Riscv
+#define INTROSPECTION_ENUM_PREFIX RISCV
+#include "define_introspection_and_hwcaps.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "internal/filesystem.h"
+#include "internal/stack_line_reader.h"
+
+static const RiscvInfo kEmptyRiscvInfo;
+
+static void HandleRiscVIsaLine(StringView line, RiscvFeatures* const features) {
+  for (size_t i = 0; i < RISCV_LAST_; ++i) {
+    StringView flag = str(kCpuInfoFlags[i]);
+    int index_of_flag = CpuFeatures_StringView_IndexOf(line, flag);
+    bool is_set = index_of_flag != -1;
+    kSetters[i](features, is_set);
+    if (is_set)
+      line = CpuFeatures_StringView_PopFront(line, index_of_flag + flag.size);
+  }
+}
+
+static bool HandleRiscVLine(const LineResult result, RiscvInfo* const info) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("isa"))) {
+      HandleRiscVIsaLine(value, &info->features);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("uarch"))) {
+      int index = CpuFeatures_StringView_IndexOfChar(value, ',');
+      if (index == -1) return true;
+      StringView vendor = CpuFeatures_StringView_KeepFront(value, index);
+      StringView uarch = CpuFeatures_StringView_PopFront(value, index + 1);
+      CpuFeatures_StringView_CopyString(vendor, info->vendor,
+                                        sizeof(info->vendor));
+      CpuFeatures_StringView_CopyString(uarch, info->uarch,
+                                        sizeof(info->uarch));
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(RiscvInfo* const info) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleRiscVLine(StackLineReader_NextLine(&reader), info)) break;
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+RiscvInfo GetRiscvInfo(void) {
+  RiscvInfo info = kEmptyRiscvInfo;
+  FillProcCpuInfoData(&info);
+  return info;
+}
+
+#endif  //  defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+#endif  // CPU_FEATURES_ARCH_RISCV
@@ -0,0 +1,120 @@
+// Copyright 2022 IBM.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_S390X
+#ifdef CPU_FEATURES_OS_LINUX
+
+#include "cpuinfo_s390x.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Definitions for introspection.
+////////////////////////////////////////////////////////////////////////////////
+#define INTROSPECTION_TABLE                                                    \
+  LINE(S390_ESAN3, esan3, "esan3", HWCAP_S390_ESAN3, 0)                              \
+  LINE(S390_ZARCH, zarch, "zarch", HWCAP_S390_ZARCH, 0)                              \
+  LINE(S390_STFLE, stfle, "stfle", HWCAP_S390_STFLE, 0)                              \
+  LINE(S390_MSA, msa, "msa", HWCAP_S390_MSA, 0)                                      \
+  LINE(S390_LDISP, ldisp, "ldisp", HWCAP_S390_LDISP, 0)                              \
+  LINE(S390_EIMM, eimm, "eimm", HWCAP_S390_EIMM, 0)                                  \
+  LINE(S390_DFP, dfp, "dfp", HWCAP_S390_DFP, 0)                                      \
+  LINE(S390_EDAT, edat, "edat", HWCAP_S390_HPAGE, 0)                                 \
+  LINE(S390_ETF3EH, etf3eh, "etf3eh", HWCAP_S390_ETF3EH, 0)                          \
+  LINE(S390_HIGHGPRS, highgprs, "highgprs", HWCAP_S390_HIGH_GPRS, 0)                 \
+  LINE(S390_TE, te, "te", HWCAP_S390_TE, 0)                                          \
+  LINE(S390_VX, vx, "vx", HWCAP_S390_VXRS, 0)                                        \
+  LINE(S390_VXD, vxd, "vxd", HWCAP_S390_VXRS_BCD, 0)                                 \
+  LINE(S390_VXE, vxe, "vxe", HWCAP_S390_VXRS_EXT, 0)                                 \
+  LINE(S390_GS, gs, "gs", HWCAP_S390_GS, 0)                                          \
+  LINE(S390_VXE2, vxe2, "vxe2", HWCAP_S390_VXRS_EXT2, 0)                             \
+  LINE(S390_VXP, vxp, "vxp", HWCAP_S390_VXRS_PDE, 0)                                 \
+  LINE(S390_SORT, sort, "sort", HWCAP_S390_SORT, 0)                                  \
+  LINE(S390_DFLT, dflt, "dflt", HWCAP_S390_DFLT, 0)                                  \
+  LINE(S390_VXP2, vxp2, "vxp2", HWCAP_S390_VXRS_PDE2, 0)                             \
+  LINE(S390_NNPA, nnpa, "nnpa", HWCAP_S390_NNPA, 0)                                  \
+  LINE(S390_PCIMIO, pcimio, "pcimio", HWCAP_S390_PCI_MIO, 0)                         \
+  LINE(S390_SIE, sie, "sie", HWCAP_S390_SIE, 0)
+#define INTROSPECTION_PREFIX S390X
+#define INTROSPECTION_ENUM_PREFIX S390X
+#include "define_introspection_and_hwcaps.inl"
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation.
+////////////////////////////////////////////////////////////////////////////////
+
+#include <stdbool.h>
+
+#include "internal/bit_utils.h"
+#include "internal/filesystem.h"
+#include "internal/hwcaps.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+static bool HandleS390XLine(const LineResult result,
+                          S390XPlatformStrings* const strings) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("# processors"))) {
+        strings->num_processors = CpuFeatures_StringView_ParsePositiveNumber(value);
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(S390XPlatformStrings* const strings) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleS390XLine(StackLineReader_NextLine(&reader), strings)) {
+        break;
+      }
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+static const S390XInfo kEmptyS390XInfo;
+
+S390XInfo GetS390XInfo(void) {
+  S390XInfo info = kEmptyS390XInfo;
+  const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
+  for (size_t i = 0; i < S390X_LAST_; ++i) {
+    if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
+      kSetters[i](&info.features, true);
+    }
+  }
+  return info;
+}
+
+static const S390XPlatformStrings kEmptyS390XPlatformStrings;
+
+S390XPlatformStrings GetS390XPlatformStrings(void) {
+  S390XPlatformStrings strings = kEmptyS390XPlatformStrings;
+  const char* platform = CpuFeatures_GetPlatformPointer();
+
+  FillProcCpuInfoData(&strings);
+
+  if (platform != NULL)
+    CpuFeatures_StringView_CopyString(str(platform), strings.type.platform,
+                                      sizeof(strings.type.platform));
+
+  return strings;
+}
+
+#endif  // CPU_FEATURES_OS_LINUX
+#endif  // CPU_FEATURES_ARCH_S390X
@@ -0,0 +1,68 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_X86
+#ifdef CPU_FEATURES_OS_FREEBSD
+
+#include "impl_x86__base_implementation.inl"
+
+static void OverrideOsPreserves(OsPreserves* os_preserves) {
+  (void)os_preserves;
+  // No override
+}
+
+#include "internal/filesystem.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
+  (void)info;
+  // Handling FreeBSD platform through parsing /var/run/dmesg.boot.
+  const int fd = CpuFeatures_OpenFile("/var/run/dmesg.boot");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (bool stop = false; !stop;) {
+      const LineResult result = StackLineReader_NextLine(&reader);
+      if (result.eof) stop = true;
+      const StringView line = result.line;
+      if (!CpuFeatures_StringView_StartsWith(line, str("  Features"))) continue;
+      // Lines of interests are of the following form:
+      // "  Features=0x1783fbff<PSE36,MMX,FXSR,SSE,SSE2,HTT>"
+      // We first extract the comma separated values between angle brackets.
+      StringView csv = result.line;
+      int index = CpuFeatures_StringView_IndexOfChar(csv, '<');
+      if (index >= 0) csv = CpuFeatures_StringView_PopFront(csv, index + 1);
+      if (csv.size > 0 && CpuFeatures_StringView_Back(csv) == '>')
+        csv = CpuFeatures_StringView_PopBack(csv, 1);
+      if (CpuFeatures_StringView_HasWord(csv, "SSE", ',')) features->sse = true;
+      if (CpuFeatures_StringView_HasWord(csv, "SSE2", ','))
+        features->sse2 = true;
+      if (CpuFeatures_StringView_HasWord(csv, "SSE3", ','))
+        features->sse3 = true;
+      if (CpuFeatures_StringView_HasWord(csv, "SSSE3", ','))
+        features->ssse3 = true;
+      if (CpuFeatures_StringView_HasWord(csv, "SSE4.1", ','))
+        features->sse4_1 = true;
+      if (CpuFeatures_StringView_HasWord(csv, "SSE4.2", ','))
+        features->sse4_2 = true;
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+#endif  // CPU_FEATURES_OS_FREEBSD
+#endif  // CPU_FEATURES_ARCH_X86
@@ -0,0 +1,58 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_X86
+#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+
+#include "impl_x86__base_implementation.inl"
+
+static void OverrideOsPreserves(OsPreserves* os_preserves) {
+  (void)os_preserves;
+  // No override
+}
+
+#include "internal/filesystem.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
+  (void)info;
+  // Handling Linux platform through /proc/cpuinfo.
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (bool stop = false; !stop;) {
+      const LineResult result = StackLineReader_NextLine(&reader);
+      if (result.eof) stop = true;
+      const StringView line = result.line;
+      StringView key, value;
+      if (!CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value))
+        continue;
+      if (!CpuFeatures_StringView_IsEquals(key, str("flags"))) continue;
+      features->sse = CpuFeatures_StringView_HasWord(value, "sse", ' ');
+      features->sse2 = CpuFeatures_StringView_HasWord(value, "sse2", ' ');
+      features->sse3 = CpuFeatures_StringView_HasWord(value, "pni", ' ');
+      features->ssse3 = CpuFeatures_StringView_HasWord(value, "ssse3", ' ');
+      features->sse4_1 = CpuFeatures_StringView_HasWord(value, "sse4_1", ' ');
+      features->sse4_2 = CpuFeatures_StringView_HasWord(value, "sse4_2", ' ');
+      break;
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+#endif  // defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
+#endif  // CPU_FEATURES_ARCH_X86
@@ -0,0 +1,57 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_X86
+#ifdef CPU_FEATURES_OS_MACOS
+
+#include "impl_x86__base_implementation.inl"
+
+#if !defined(HAVE_SYSCTLBYNAME)
+#error "Darwin needs support for sysctlbyname"
+#endif
+#include <sys/sysctl.h>
+
+#if defined(CPU_FEATURES_MOCK_CPUID_X86)
+extern bool GetDarwinSysCtlByName(const char*);
+#else  // CPU_FEATURES_MOCK_CPUID_X86
+static bool GetDarwinSysCtlByName(const char* name) {
+  int enabled;
+  size_t enabled_len = sizeof(enabled);
+  const int failure = sysctlbyname(name, &enabled, &enabled_len, NULL, 0);
+  return failure ? false : enabled;
+}
+#endif
+
+static void OverrideOsPreserves(OsPreserves* os_preserves) {
+  // On Darwin AVX512 support is On-demand.
+  // We have to query the OS instead of querying the Zmm save/restore state.
+  // https://github.com/apple/darwin-xnu/blob/8f02f2a044b9bb1ad951987ef5bab20ec9486310/osfmk/i386/fpu.c#L173-L199
+  os_preserves->avx512_registers = GetDarwinSysCtlByName("hw.optional.avx512f");
+}
+
+static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
+  (void)info;
+  // Handling Darwin platform through sysctlbyname.
+  features->sse = GetDarwinSysCtlByName("hw.optional.sse");
+  features->sse2 = GetDarwinSysCtlByName("hw.optional.sse2");
+  features->sse3 = GetDarwinSysCtlByName("hw.optional.sse3");
+  features->ssse3 = GetDarwinSysCtlByName("hw.optional.supplementalsse3");
+  features->sse4_1 = GetDarwinSysCtlByName("hw.optional.sse4_1");
+  features->sse4_2 = GetDarwinSysCtlByName("hw.optional.sse4_2");
+}
+
+#endif  // CPU_FEATURES_OS_MACOS
+#endif  // CPU_FEATURES_ARCH_X86
@@ -0,0 +1,58 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpu_features_macros.h"
+
+#ifdef CPU_FEATURES_ARCH_X86
+#ifdef CPU_FEATURES_OS_WINDOWS
+
+#include "impl_x86__base_implementation.inl"
+
+static void OverrideOsPreserves(OsPreserves* os_preserves) {
+  (void)os_preserves;
+  // No override
+}
+
+#include "internal/windows_utils.h"
+
+#if defined(CPU_FEATURES_MOCK_CPUID_X86)
+extern bool GetWindowsIsProcessorFeaturePresent(DWORD);
+#else  // CPU_FEATURES_MOCK_CPUID_X86
+static bool GetWindowsIsProcessorFeaturePresent(DWORD ProcessorFeature) {
+  return IsProcessorFeaturePresent(ProcessorFeature);
+}
+#endif
+
+static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
+  // Handling Windows platform through IsProcessorFeaturePresent.
+  // https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-isprocessorfeaturepresent
+  features->sse =
+      GetWindowsIsProcessorFeaturePresent(PF_XMMI_INSTRUCTIONS_AVAILABLE);
+  features->sse2 =
+      GetWindowsIsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE);
+  features->sse3 =
+      GetWindowsIsProcessorFeaturePresent(PF_SSE3_INSTRUCTIONS_AVAILABLE);
+  features->ssse3 =
+      GetWindowsIsProcessorFeaturePresent(PF_SSSE3_INSTRUCTIONS_AVAILABLE);
+  features->sse4_1 =
+      GetWindowsIsProcessorFeaturePresent(PF_SSE4_1_INSTRUCTIONS_AVAILABLE);
+  features->sse4_2 =
+      GetWindowsIsProcessorFeaturePresent(PF_SSE4_2_INSTRUCTIONS_AVAILABLE);
+
+// do not bother checking PF_AVX*
+// cause AVX enabled processor will have XCR0 be exposed and this function will be skipped at all
+}
+
+#endif  // CPU_FEATURES_OS_WINDOWS
+#endif  // CPU_FEATURES_ARCH_X86
@@ -0,0 +1,132 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "internal/stack_line_reader.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+
+#include "internal/filesystem.h"
+
+void StackLineReader_Initialize(StackLineReader* reader, int fd) {
+  reader->view.ptr = reader->buffer;
+  reader->view.size = 0;
+  reader->skip_mode = false;
+  reader->fd = fd;
+}
+
+// Replaces the content of buffer with bytes from the file.
+static int LoadFullBuffer(StackLineReader* reader) {
+  const int read = CpuFeatures_ReadFile(reader->fd, reader->buffer,
+                                        STACK_LINE_READER_BUFFER_SIZE);
+  assert(read >= 0);
+  reader->view.ptr = reader->buffer;
+  reader->view.size = read;
+  return read;
+}
+
+// Appends with bytes from the file to buffer, filling the remaining space.
+static int LoadMore(StackLineReader* reader) {
+  char* const ptr = reader->buffer + reader->view.size;
+  const size_t size_to_read = STACK_LINE_READER_BUFFER_SIZE - reader->view.size;
+  const int read = CpuFeatures_ReadFile(reader->fd, ptr, size_to_read);
+  assert(read >= 0);
+  assert(read <= (int)size_to_read);
+  reader->view.size += read;
+  return read;
+}
+
+static int IndexOfEol(StackLineReader* reader) {
+  return CpuFeatures_StringView_IndexOfChar(reader->view, '\n');
+}
+
+// Relocate buffer's pending bytes at the beginning of the array and fills the
+// remaining space with bytes from the file.
+static int BringToFrontAndLoadMore(StackLineReader* reader) {
+  if (reader->view.size && reader->view.ptr != reader->buffer) {
+    memmove(reader->buffer, reader->view.ptr, reader->view.size);
+  }
+  reader->view.ptr = reader->buffer;
+  return LoadMore(reader);
+}
+
+// Loads chunks of buffer size from disks until it contains a newline character
+// or end of file.
+static void SkipToNextLine(StackLineReader* reader) {
+  for (;;) {
+    const int read = LoadFullBuffer(reader);
+    if (read == 0) {
+      break;
+    } else {
+      const int eol_index = IndexOfEol(reader);
+      if (eol_index >= 0) {
+        reader->view =
+            CpuFeatures_StringView_PopFront(reader->view, eol_index + 1);
+        break;
+      }
+    }
+  }
+}
+
+static LineResult CreateLineResult(bool eof, bool full_line, StringView view) {
+  LineResult result;
+  result.eof = eof;
+  result.full_line = full_line;
+  result.line = view;
+  return result;
+}
+
+// Helper methods to provide clearer semantic in StackLineReader_NextLine.
+static LineResult CreateEOFLineResult(StringView view) {
+  return CreateLineResult(true, true, view);
+}
+
+static LineResult CreateTruncatedLineResult(StringView view) {
+  return CreateLineResult(false, false, view);
+}
+
+static LineResult CreateValidLineResult(StringView view) {
+  return CreateLineResult(false, true, view);
+}
+
+LineResult StackLineReader_NextLine(StackLineReader* reader) {
+  if (reader->skip_mode) {
+    SkipToNextLine(reader);
+    reader->skip_mode = false;
+  }
+  {
+    const bool can_load_more =
+        reader->view.size < STACK_LINE_READER_BUFFER_SIZE;
+    int eol_index = IndexOfEol(reader);
+    if (eol_index < 0 && can_load_more) {
+      const int read = BringToFrontAndLoadMore(reader);
+      if (read == 0) {
+        return CreateEOFLineResult(reader->view);
+      }
+      eol_index = IndexOfEol(reader);
+    }
+    if (eol_index < 0) {
+      reader->skip_mode = true;
+      return CreateTruncatedLineResult(reader->view);
+    }
+    {
+      StringView line =
+          CpuFeatures_StringView_KeepFront(reader->view, eol_index);
+      reader->view =
+          CpuFeatures_StringView_PopFront(reader->view, eol_index + 1);
+      return CreateValidLineResult(line);
+    }
+  }
+}
@@ -0,0 +1,192 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "internal/string_view.h"
+
+#include <assert.h>
+#include <ctype.h>
+
+#include "copy.inl"
+#include "equals.inl"
+
+static const char* CpuFeatures_memchr(const char* const ptr, const size_t size,
+                                      const char c) {
+  for (size_t i = 0; ptr && ptr[i] != '\0' && i < size; ++i)
+    if (ptr[i] == c) return ptr + i;
+  return NULL;
+}
+
+int CpuFeatures_StringView_IndexOfChar(const StringView view, char c) {
+  if (view.ptr && view.size) {
+    const char* const found = CpuFeatures_memchr(view.ptr, view.size, c);
+    if (found) {
+      return (int)(found - view.ptr);
+    }
+  }
+  return -1;
+}
+
+int CpuFeatures_StringView_IndexOf(const StringView view,
+                                   const StringView sub_view) {
+  if (sub_view.size) {
+    StringView remainder = view;
+    while (remainder.size >= sub_view.size) {
+      const int found_index =
+          CpuFeatures_StringView_IndexOfChar(remainder, sub_view.ptr[0]);
+      if (found_index < 0) break;
+      remainder = CpuFeatures_StringView_PopFront(remainder, found_index);
+      if (CpuFeatures_StringView_StartsWith(remainder, sub_view)) {
+        return (int)(remainder.ptr - view.ptr);
+      }
+      remainder = CpuFeatures_StringView_PopFront(remainder, 1);
+    }
+  }
+  return -1;
+}
+
+bool CpuFeatures_StringView_IsEquals(const StringView a, const StringView b) {
+  if (a.size == b.size) {
+    return a.ptr == b.ptr || equals(a.ptr, b.ptr, b.size);
+  }
+  return false;
+}
+
+bool CpuFeatures_StringView_StartsWith(const StringView a, const StringView b) {
+  return a.ptr && b.ptr && b.size && a.size >= b.size
+             ? equals(a.ptr, b.ptr, b.size)
+             : false;
+}
+
+StringView CpuFeatures_StringView_PopFront(const StringView str_view,
+                                           size_t count) {
+  if (count > str_view.size) {
+    return kEmptyStringView;
+  }
+  return view(str_view.ptr + count, str_view.size - count);
+}
+
+StringView CpuFeatures_StringView_PopBack(const StringView str_view,
+                                          size_t count) {
+  if (count > str_view.size) {
+    return kEmptyStringView;
+  }
+  return view(str_view.ptr, str_view.size - count);
+}
+
+StringView CpuFeatures_StringView_KeepFront(const StringView str_view,
+                                            size_t count) {
+  return count <= str_view.size ? view(str_view.ptr, count) : str_view;
+}
+
+char CpuFeatures_StringView_Front(const StringView view) {
+  assert(view.size);
+  assert(view.ptr);
+  return view.ptr[0];
+}
+
+char CpuFeatures_StringView_Back(const StringView view) {
+  assert(view.size);
+  return view.ptr[view.size - 1];
+}
+
+StringView CpuFeatures_StringView_TrimWhitespace(StringView view) {
+  while (view.size && isspace(CpuFeatures_StringView_Front(view)))
+    view = CpuFeatures_StringView_PopFront(view, 1);
+  while (view.size && isspace(CpuFeatures_StringView_Back(view)))
+    view = CpuFeatures_StringView_PopBack(view, 1);
+  return view;
+}
+
+static int HexValue(const char c) {
+  if (c >= '0' && c <= '9') return c - '0';
+  if (c >= 'a' && c <= 'f') return c - 'a' + 10;
+  if (c >= 'A' && c <= 'F') return c - 'A' + 10;
+  return -1;
+}
+
+// Returns -1 if view contains non digits.
+static int ParsePositiveNumberWithBase(const StringView view, int base) {
+  int result = 0;
+  StringView remainder = view;
+  for (; remainder.size;
+       remainder = CpuFeatures_StringView_PopFront(remainder, 1)) {
+    const int value = HexValue(CpuFeatures_StringView_Front(remainder));
+    if (value < 0 || value >= base) return -1;
+    result = (result * base) + value;
+  }
+  return result;
+}
+
+int CpuFeatures_StringView_ParsePositiveNumber(const StringView view) {
+  if (view.size) {
+    const StringView hex_prefix = str("0x");
+    if (CpuFeatures_StringView_StartsWith(view, hex_prefix)) {
+      const StringView span_no_prefix =
+          CpuFeatures_StringView_PopFront(view, hex_prefix.size);
+      return ParsePositiveNumberWithBase(span_no_prefix, 16);
+    }
+    return ParsePositiveNumberWithBase(view, 10);
+  }
+  return -1;
+}
+
+void CpuFeatures_StringView_CopyString(const StringView src, char* dst,
+                                       size_t dst_size) {
+  if (dst_size > 0) {
+    const size_t max_copy_size = dst_size - 1;
+    const size_t copy_size =
+        src.size > max_copy_size ? max_copy_size : src.size;
+    copy(dst, src.ptr, copy_size);
+    dst[copy_size] = '\0';
+  }
+}
+
+bool CpuFeatures_StringView_HasWord(const StringView line,
+                                    const char* const word_str,
+                                    const char separator) {
+  const StringView word = str(word_str);
+  StringView remainder = line;
+  for (;;) {
+    const int index_of_word = CpuFeatures_StringView_IndexOf(remainder, word);
+    if (index_of_word < 0) {
+      return false;
+    } else {
+      const StringView before =
+          CpuFeatures_StringView_KeepFront(line, index_of_word);
+      const StringView after =
+          CpuFeatures_StringView_PopFront(line, index_of_word + word.size);
+      const bool valid_before =
+          before.size == 0 || CpuFeatures_StringView_Back(before) == separator;
+      const bool valid_after =
+          after.size == 0 || CpuFeatures_StringView_Front(after) == separator;
+      if (valid_before && valid_after) return true;
+      remainder =
+          CpuFeatures_StringView_PopFront(remainder, index_of_word + word.size);
+    }
+  }
+  return false;
+}
+
+bool CpuFeatures_StringView_GetAttributeKeyValue(const StringView line,
+                                                 StringView* key,
+                                                 StringView* value) {
+  const StringView sep = str(": ");
+  const int index_of_separator = CpuFeatures_StringView_IndexOf(line, sep);
+  if (index_of_separator < 0) return false;
+  *value = CpuFeatures_StringView_TrimWhitespace(
+      CpuFeatures_StringView_PopFront(line, index_of_separator + sep.size));
+  *key = CpuFeatures_StringView_TrimWhitespace(
+      CpuFeatures_StringView_KeepFront(line, index_of_separator));
+  return true;
+}
@@ -0,0 +1,470 @@
+// Copyright 2017 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This program dumps current host data to the standard output.
+// Output can be text or json if the `--json` flag is passed.
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "cpu_features_macros.h"
+
+#if defined(CPU_FEATURES_ARCH_X86)
+#include "cpuinfo_x86.h"
+#elif defined(CPU_FEATURES_ARCH_ARM)
+#include "cpuinfo_arm.h"
+#elif defined(CPU_FEATURES_ARCH_AARCH64)
+#include "cpuinfo_aarch64.h"
+#elif defined(CPU_FEATURES_ARCH_MIPS)
+#include "cpuinfo_mips.h"
+#elif defined(CPU_FEATURES_ARCH_PPC)
+#include "cpuinfo_ppc.h"
+#elif defined(CPU_FEATURES_ARCH_S390X)
+#include "cpuinfo_s390x.h"
+#elif defined(CPU_FEATURES_ARCH_RISCV)
+#include "cpuinfo_riscv.h"
+#elif defined(CPU_FEATURES_ARCH_LOONGARCH)
+#include "cpuinfo_loongarch.h"
+#endif
+
+// Design principles
+// -----------------
+// We build a tree structure containing all the data to be displayed.
+// Then depending on the output type (text or json) we walk the tree and display
+// the data accordingly.
+
+// We use a bump allocator to allocate strings and nodes of the tree,
+// Memory is not intended to be reclaimed.
+typedef struct {
+  char* ptr;
+  size_t size;
+} BumpAllocator;
+
+char gGlobalBuffer[64 * 1024];
+BumpAllocator gBumpAllocator = {.ptr = gGlobalBuffer,
+                                .size = sizeof(gGlobalBuffer)};
+
+static void internal_error(void) {
+  fputs("internal error\n", stderr);
+  exit(EXIT_FAILURE);
+}
+
+#define ALIGN 8
+
+static void assertAligned(void) {
+  if ((uintptr_t)(gBumpAllocator.ptr) % ALIGN) internal_error();
+}
+
+static void BA_Align(void) {
+  while (gBumpAllocator.size && (uintptr_t)(gBumpAllocator.ptr) % ALIGN) {
+    --gBumpAllocator.size;
+    ++gBumpAllocator.ptr;
+  }
+  assertAligned();
+}
+
+// Update the available memory left in the BumpAllocator.
+static void* BA_Bump(size_t size) {
+  assertAligned();
+  // Align size to next 8B boundary.
+  size = (size + ALIGN - 1) / ALIGN * ALIGN;
+  if (gBumpAllocator.size < size) internal_error();
+  void* ptr = gBumpAllocator.ptr;
+  gBumpAllocator.size -= size;
+  gBumpAllocator.ptr += size;
+  return ptr;
+}
+
+// The type of the nodes in the tree.
+typedef enum {
+  NT_INVALID,
+  NT_INT,
+  NT_MAP,
+  NT_MAP_ENTRY,
+  NT_ARRAY,
+  NT_ARRAY_ELEMENT,
+  NT_STRING,
+} NodeType;
+
+// The node in the tree.
+typedef struct Node {
+  NodeType type;
+  unsigned integer;
+  const char* string;
+  struct Node* value;
+  struct Node* next;
+} Node;
+
+// Creates an initialized Node.
+static Node* BA_CreateNode(NodeType type) {
+  Node* tv = (Node*)BA_Bump(sizeof(Node));
+  assert(tv);
+  *tv = (Node){.type = type};
+  return tv;
+}
+
+// Adds an integer node.
+static Node* CreateInt(int value) {
+  Node* tv = BA_CreateNode(NT_INT);
+  tv->integer = value;
+  return tv;
+}
+
+// Adds a string node.
+// `value` must outlive the tree.
+static Node* CreateConstantString(const char* value) {
+  Node* tv = BA_CreateNode(NT_STRING);
+  tv->string = value;
+  return tv;
+}
+
+// Adds a map node.
+static Node* CreateMap(void) { return BA_CreateNode(NT_MAP); }
+
+// Adds an array node.
+static Node* CreateArray(void) { return BA_CreateNode(NT_ARRAY); }
+
+// Adds a formatted string node.
+static Node* CreatePrintfString(const char* format, ...) {
+  va_list arglist;
+  va_start(arglist, format);
+  char* const ptr = gBumpAllocator.ptr;
+  const int written = vsnprintf(ptr, gBumpAllocator.size, format, arglist);
+  va_end(arglist);
+  if (written < 0 || written >= (int)gBumpAllocator.size) internal_error();
+  return CreateConstantString((char*)BA_Bump(written));
+}
+
+// Adds a string node.
+static Node* CreateString(const char* value) {
+  return CreatePrintfString("%s", value);
+}
+
+// Adds a map entry node.
+static void AddMapEntry(Node* map, const char* key, Node* value) {
+  assert(map && map->type == NT_MAP);
+  Node* current = map;
+  while (current->next) current = current->next;
+  current->next = (Node*)BA_Bump(sizeof(Node));
+  *current->next = (Node){.type = NT_MAP_ENTRY, .string = key, .value = value};
+}
+
+// Adds an array element node.
+static void AddArrayElement(Node* array, Node* value) {
+  assert(array && array->type == NT_ARRAY);
+  Node* current = array;
+  while (current->next) current = current->next;
+  current->next = (Node*)BA_Bump(sizeof(Node));
+  *current->next = (Node){.type = NT_ARRAY_ELEMENT, .value = value};
+}
+
+static int cmp(const void* p1, const void* p2) {
+  return strcmp(*(const char* const*)p1, *(const char* const*)p2);
+}
+
+#define DEFINE_ADD_FLAGS(HasFeature, FeatureName, FeatureType, LastEnum) \
+  static void AddFlags(Node* map, const FeatureType* features) {         \
+    size_t i;                                                            \
+    const char* ptrs[LastEnum] = {0};                                    \
+    size_t count = 0;                                                    \
+    for (i = 0; i < LastEnum; ++i) {                                     \
+      if (HasFeature(features, i)) {                                     \
+        ptrs[count] = FeatureName(i);                                    \
+        ++count;                                                         \
+      }                                                                  \
+    }                                                                    \
+    qsort((void*)ptrs, count, sizeof(char*), cmp);                       \
+    Node* const array = CreateArray();                                   \
+    for (i = 0; i < count; ++i)                                          \
+      AddArrayElement(array, CreateConstantString(ptrs[i]));             \
+    AddMapEntry(map, "flags", array);                                    \
+  }
+
+#if defined(CPU_FEATURES_ARCH_X86)
+DEFINE_ADD_FLAGS(GetX86FeaturesEnumValue, GetX86FeaturesEnumName, X86Features,
+                 X86_LAST_)
+#elif defined(CPU_FEATURES_ARCH_ARM)
+DEFINE_ADD_FLAGS(GetArmFeaturesEnumValue, GetArmFeaturesEnumName, ArmFeatures,
+                 ARM_LAST_)
+#elif defined(CPU_FEATURES_ARCH_AARCH64)
+DEFINE_ADD_FLAGS(GetAarch64FeaturesEnumValue, GetAarch64FeaturesEnumName,
+                 Aarch64Features, AARCH64_LAST_)
+#elif defined(CPU_FEATURES_ARCH_MIPS)
+DEFINE_ADD_FLAGS(GetMipsFeaturesEnumValue, GetMipsFeaturesEnumName,
+                 MipsFeatures, MIPS_LAST_)
+#elif defined(CPU_FEATURES_ARCH_PPC)
+DEFINE_ADD_FLAGS(GetPPCFeaturesEnumValue, GetPPCFeaturesEnumName, PPCFeatures,
+                 PPC_LAST_)
+#elif defined(CPU_FEATURES_ARCH_S390X)
+DEFINE_ADD_FLAGS(GetS390XFeaturesEnumValue, GetS390XFeaturesEnumName, S390XFeatures,
+                 S390X_LAST_)
+#elif defined(CPU_FEATURES_ARCH_RISCV)
+DEFINE_ADD_FLAGS(GetRiscvFeaturesEnumValue, GetRiscvFeaturesEnumName, RiscvFeatures,
+                 RISCV_LAST_)
+#elif defined(CPU_FEATURES_ARCH_LOONGARCH)
+DEFINE_ADD_FLAGS(GetLoongArchFeaturesEnumValue, GetLoongArchFeaturesEnumName, LoongArchFeatures,
+                 LOONGARCH_LAST_)
+#endif
+
+// Prints a json string with characters escaping.
+static void printJsonString(const char* str) {
+  putchar('"');
+  for (; str && *str; ++str) {
+    switch (*str) {
+      case '\"':
+      case '\\':
+      case '/':
+      case '\b':
+      case '\f':
+      case '\n':
+      case '\r':
+      case '\t':
+        putchar('\\');
+    }
+    putchar(*str);
+  }
+  putchar('"');
+}
+
+// Walks a Node and print it as json.
+static void printJson(const Node* current) {
+  assert(current);
+  switch (current->type) {
+    case NT_INVALID:
+      break;
+    case NT_INT:
+      printf("%d", current->integer);
+      break;
+    case NT_STRING:
+      printJsonString(current->string);
+      break;
+    case NT_ARRAY:
+      putchar('[');
+      if (current->next) printJson(current->next);
+      putchar(']');
+      break;
+    case NT_MAP:
+      putchar('{');
+      if (current->next) printJson(current->next);
+      putchar('}');
+      break;
+    case NT_MAP_ENTRY:
+      printf("\"%s\":", current->string);
+      printJson(current->value);
+      if (current->next) {
+        putchar(',');
+        printJson(current->next);
+      }
+      break;
+    case NT_ARRAY_ELEMENT:
+      printJson(current->value);
+      if (current->next) {
+        putchar(',');
+        printJson(current->next);
+      }
+      break;
+  }
+}
+
+// Walks a Node and print it as text.
+static void printTextField(const Node* current) {
+  switch (current->type) {
+    case NT_INVALID:
+      break;
+    case NT_INT:
+      printf("%3d (0x%02X)", current->integer, current->integer);
+      break;
+    case NT_STRING:
+      fputs(current->string, stdout);
+      break;
+    case NT_ARRAY:
+      if (current->next) printTextField(current->next);
+      break;
+    case NT_MAP:
+      if (current->next) {
+        printf("{");
+        printJson(current->next);
+        printf("}");
+      }
+      break;
+    case NT_MAP_ENTRY:
+      printf("%-15s : ", current->string);
+      printTextField(current->value);
+      if (current->next) {
+        putchar('\n');
+        printTextField(current->next);
+      }
+      break;
+    case NT_ARRAY_ELEMENT:
+      printTextField(current->value);
+      if (current->next) {
+        putchar(',');
+        printTextField(current->next);
+      }
+      break;
+  }
+}
+
+static void printTextRoot(const Node* current) {
+  if (current->type == NT_MAP && current->next) printTextField(current->next);
+}
+
+static void showUsage(const char* name) {
+  printf(
+      "\n"
+      "Usage: %s [options]\n"
+      "      Options:\n"
+      "      -h | --help     Show help message.\n"
+      "      -j | --json     Format output as json instead of plain text.\n"
+      "\n",
+      name);
+}
+
+static Node* GetCacheTypeString(CacheType cache_type) {
+  switch (cache_type) {
+    case CPU_FEATURE_CACHE_NULL:
+      return CreateConstantString("null");
+    case CPU_FEATURE_CACHE_DATA:
+      return CreateConstantString("data");
+    case CPU_FEATURE_CACHE_INSTRUCTION:
+      return CreateConstantString("instruction");
+    case CPU_FEATURE_CACHE_UNIFIED:
+      return CreateConstantString("unified");
+    case CPU_FEATURE_CACHE_TLB:
+      return CreateConstantString("tlb");
+    case CPU_FEATURE_CACHE_DTLB:
+      return CreateConstantString("dtlb");
+    case CPU_FEATURE_CACHE_STLB:
+      return CreateConstantString("stlb");
+    case CPU_FEATURE_CACHE_PREFETCH:
+      return CreateConstantString("prefetch");
+  }
+  CPU_FEATURES_UNREACHABLE();
+}
+
+static void AddCacheInfo(Node* root, const CacheInfo* cache_info) {
+  Node* array = CreateArray();
+  for (int i = 0; i < cache_info->size; ++i) {
+    CacheLevelInfo info = cache_info->levels[i];
+    Node* map = CreateMap();
+    AddMapEntry(map, "level", CreateInt(info.level));
+    AddMapEntry(map, "cache_type", GetCacheTypeString(info.cache_type));
+    AddMapEntry(map, "cache_size", CreateInt(info.cache_size));
+    AddMapEntry(map, "ways", CreateInt(info.ways));
+    AddMapEntry(map, "line_size", CreateInt(info.line_size));
+    AddMapEntry(map, "tlb_entries", CreateInt(info.tlb_entries));
+    AddMapEntry(map, "partitioning", CreateInt(info.partitioning));
+    AddArrayElement(array, map);
+  }
+  AddMapEntry(root, "cache_info", array);
+}
+
+static Node* CreateTree(void) {
+  Node* root = CreateMap();
+#if defined(CPU_FEATURES_ARCH_X86)
+  const X86Info info = GetX86Info();
+  const CacheInfo cache_info = GetX86CacheInfo();
+  AddMapEntry(root, "arch", CreateString("x86"));
+  AddMapEntry(root, "brand", CreateString(info.brand_string));
+  AddMapEntry(root, "family", CreateInt(info.family));
+  AddMapEntry(root, "model", CreateInt(info.model));
+  AddMapEntry(root, "stepping", CreateInt(info.stepping));
+  AddMapEntry(root, "uarch",
+              CreateString(
+                  GetX86MicroarchitectureName(GetX86Microarchitecture(&info))));
+  AddFlags(root, &info.features);
+  AddCacheInfo(root, &cache_info);
+#elif defined(CPU_FEATURES_ARCH_ARM)
+  const ArmInfo info = GetArmInfo();
+  AddMapEntry(root, "arch", CreateString("ARM"));
+  AddMapEntry(root, "implementer", CreateInt(info.implementer));
+  AddMapEntry(root, "architecture", CreateInt(info.architecture));
+  AddMapEntry(root, "variant", CreateInt(info.variant));
+  AddMapEntry(root, "part", CreateInt(info.part));
+  AddMapEntry(root, "revision", CreateInt(info.revision));
+  AddFlags(root, &info.features);
+#elif defined(CPU_FEATURES_ARCH_AARCH64)
+  const Aarch64Info info = GetAarch64Info();
+  AddMapEntry(root, "arch", CreateString("aarch64"));
+  AddMapEntry(root, "implementer", CreateInt(info.implementer));
+  AddMapEntry(root, "variant", CreateInt(info.variant));
+  AddMapEntry(root, "part", CreateInt(info.part));
+  AddMapEntry(root, "revision", CreateInt(info.revision));
+  AddFlags(root, &info.features);
+#elif defined(CPU_FEATURES_ARCH_MIPS)
+  const MipsInfo info = GetMipsInfo();
+  AddMapEntry(root, "arch", CreateString("mips"));
+  AddFlags(root, &info.features);
+#elif defined(CPU_FEATURES_ARCH_PPC)
+  const PPCInfo info = GetPPCInfo();
+  const PPCPlatformStrings strings = GetPPCPlatformStrings();
+  AddMapEntry(root, "arch", CreateString("ppc"));
+  AddMapEntry(root, "platform", CreateString(strings.platform));
+  AddMapEntry(root, "model", CreateString(strings.model));
+  AddMapEntry(root, "machine", CreateString(strings.machine));
+  AddMapEntry(root, "cpu", CreateString(strings.cpu));
+  AddMapEntry(root, "instruction", CreateString(strings.type.platform));
+  AddMapEntry(root, "microarchitecture",
+              CreateString(strings.type.base_platform));
+  AddFlags(root, &info.features);
+#elif defined(CPU_FEATURES_ARCH_S390X)
+  const S390XInfo info = GetS390XInfo();
+  const S390XPlatformStrings strings = GetS390XPlatformStrings();
+  AddMapEntry(root, "arch", CreateString("s390x"));
+  AddMapEntry(root, "platform", CreateString("zSeries"));
+  AddMapEntry(root, "model", CreateString(strings.type.platform));
+  AddMapEntry(root, "# processors", CreateInt(strings.num_processors));
+  AddFlags(root, &info.features);
+#elif defined(CPU_FEATURES_ARCH_RISCV)
+  const RiscvInfo info = GetRiscvInfo();
+  AddMapEntry(root, "arch", CreateString("risc-v"));
+  AddMapEntry(root, "vendor", CreateString(info.vendor));
+  AddMapEntry(root, "microarchitecture", CreateString(info.uarch));
+  AddFlags(root, &info.features); 
+#elif defined(CPU_FEATURES_ARCH_LOONGARCH)
+  const LoongArchInfo info = GetLoongArchInfo();
+  AddMapEntry(root, "arch", CreateString("loongarch"));
+  AddFlags(root, &info.features); 
+#endif
+  return root;
+}
+
+int main(int argc, char** argv) {
+  BA_Align();
+  const Node* const root = CreateTree();
+  bool outputJson = false;
+  int i = 1;
+  for (; i < argc; ++i) {
+    const char* arg = argv[i];
+    if (strcmp(arg, "-j") == 0 || strcmp(arg, "--json") == 0) {
+      outputJson = true;
+    } else {
+      showUsage(argv[0]);
+      if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0)
+        return EXIT_SUCCESS;
+      return EXIT_FAILURE;
+    }
+  }
+  if (outputJson)
+    printJson(root);
+  else
+    printTextRoot(root);
+  putchar('\n');
+  return EXIT_SUCCESS;
+}
@@ -1,9 +0,0 @@
-cv2pdb.exe
-dbghelp.dll
-msobj140.dll
-mspdb140.dll
-mspdbcmf.exe
-mspdbcore.dll
-mspdbsrv.exe
-mspdbst.dll
-vcruntime140.dll
@@ -1,36 +0,0 @@
-# cv2pdb
-
-This exists to convert the DWARF debug information to PDB and helps us
-to get more precise stackstraces on program crashes.
-
-Sadly this program is for windows only, but we can get it running using
-WINE. You'll not only need wine and cv2pdb, but also Microsoft's PDB
-helper libraries and dependencies.
-Because of licensing issues I can't supply the needed files for you
-here. What files work for me:
-
- cv2pdb.exe
- dbghelp.dll
- msobj140.dll
- mspdb140.dll
- mspdbcmf.exe
- mspdbcore.dll
- mspdbsrv.exe
- mspdbst.dll
- vcruntime140.dll
-
-I found those libraries in my Visual Studio 2017 install:
-
-    ..\2017\Community\VC\Tools\MSVC\14.11.25503\bin\Hostx86\x86
-
-You can find cv2pdb binaries here:
-
-    https://github.com/rainers/cv2pdb/releases
-
-Apparently cv2pdb also supports older versions of mspdb:
-
- mspdb80
- mspdb100
- mspdb110
- mspdb120
- mspdb140
@@ -45,7 +45,6 @@ IncludeCategories:
  - Regex: '.*'
    Priority: 3
 IncludeIsMainRegex: '(_test|_win|_linux|_mac|_ios|_osx|_null)?$'
-IndentCaseLabels: false
 IndentWidth: 4
 IndentWrappedFunctionNames: false
 KeepEmptyLinesAtTheStartOfBlocks: false
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.2.0)
+cmake_minimum_required (VERSION 3.12)
 project (DiscordRPC)

 include(GNUInstallDirs)
@@ -1,24 +1,17 @@
-FROM archlinux:base
+FROM ghcr.io/archlinux/archlinux:base-devel

-RUN pacman --noconfirm -Syu gettext \
-    git \
+RUN pacman --noconfirm -Syu git \
    bash \
    zip \
    upx \
-    sudo \
-    binutils \
-    file \
-    make \
-    gcc \
-    fakeroot \
-    diffutils \
+    ninja \
    cmake \
-    awk \
    unzip \
    mingw-w64-crt \
    mingw-w64-winpthreads \
    mingw-w64-gcc \
    mingw-w64-headers \
-    mingw-w64-binutils
+    mingw-w64-binutils \
+    ccache
 RUN useradd user -m && echo "ALL ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
-RUN su user -c "cd /tmp/ && git clone https://aur.archlinux.org/yay.git --depth=1 && cd yay && makepkg --noconfirm -si && yay --noconfirm -S mingw-w64-cmake"
+RUN su user -c "cd /tmp/ && git clone https://aur.archlinux.org/yay-bin.git --depth=1 && cd yay-bin && makepkg --noconfirm -si && yay --noconfirm -S mingw-w64-cmake"
@@ -1527,6 +1527,9 @@ FMT_CONSTEXPR auto make_arg(const T& value) -> basic_format_arg<Context> {
  return arg;
 }

+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-reference"
+
 // The type template parameter is there to avoid an ODR violation when using
 // a fallback formatter in one translation unit and an implicit conversion in
 // another (not recommended).
@@ -1541,6 +1544,8 @@ FMT_CONSTEXPR FMT_INLINE auto make_arg(const T& val) -> value<Context> {
  return arg;
 }

+#pragma GCC diagnostic pop
+
 template <bool IS_PACKED, typename Context, type, typename T,
          FMT_ENABLE_IF(!IS_PACKED)>
 inline auto make_arg(const T& value) -> basic_format_arg<Context> {
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9)
+cmake_minimum_required(VERSION 3.12)
 project(imgui CXX)

 set(HASH_LIBRARY_HEADERS
@@ -1467,7 +1467,7 @@ void basic_tcp_server::accept_thread()

      if (handshake(conn))
      {
-        if (newClient = accept(conn))
+        if ((newClient = accept(conn)))
        {
          newClient->on_accept();

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9)
+cmake_minimum_required(VERSION 3.12)
 project(imgui CXX)

 # dear imgui uses the C++ virtual interfaces for DirectX
@@ -8,6 +8,8 @@ set(IMGUI_HEADERS
        imconfig.h
        imgui.h
        imgui_internal.h
+        backends/imgui_impl_dx9.h
+        misc/cpp/imgui_stdlib.h
 )
 set(IMGUI_SOURCES
        imgui.cpp
@@ -15,6 +17,8 @@ set(IMGUI_SOURCES
        imgui_tables.cpp
        imgui_widgets.cpp
        imgui_demo.cpp
+        backends/imgui_impl_dx9.cpp
+        misc/cpp/imgui_stdlib.cpp
 )

 add_library(imgui STATIC ${IMGUI_HEADERS} ${IMGUI_SOURCES})
@@ -0,0 +1,360 @@
+// dear imgui: Renderer for DirectX9
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX9: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX9: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: Misc: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects().
+//  2019-01-16: Misc: Disabled fog before drawing UI's. Fixes issue #2288.
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-06-08: Misc: Extracted imgui_impl_dx9.cpp/.h away from the old combined DX9+Win32 example.
+//  2018-06-08: DirectX9: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-05-07: Render: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX9_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+
+#include "imgui_impl_dx9.h"
+
+#include <algorithm>
+
+// DirectX
+#include <d3d9.h>
+
+#include "imgui.h"
+
+// allow std::min use
+#ifdef min
+#undef min
+#endif
+
+// DirectX data
+static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
+static LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;
+static LPDIRECT3DINDEXBUFFER9 g_pIB = NULL;
+static LPDIRECT3DTEXTURE9 g_FontTexture = NULL;
+static int g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
+
+// Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX9_RenderDrawData(ImDrawData *draw_data) {
+
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // Create and grow buffers if needed
+    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount) {
+        if (g_pVB) {
+            g_pVB->Release();
+            g_pVB = NULL;
+        }
+        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        if (g_pd3dDevice->CreateVertexBuffer(g_VertexBufferSize * sizeof(ImDrawVert),
+                                             D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX,
+                                             D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
+            return;
+    }
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount) {
+        if (g_pIB) {
+            g_pIB->Release();
+            g_pIB = NULL;
+        }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        if (g_pd3dDevice->CreateIndexBuffer(g_IndexBufferSize * sizeof(ImDrawIdx),
+                                            D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY,
+                                            sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32,
+                                            D3DPOOL_DEFAULT, &g_pIB, NULL) < 0)
+            return;
+    }
+
+    // Backup the DX9 state
+    IDirect3DStateBlock9 *d3d9_state_block = NULL;
+    if (g_pd3dDevice->CreateStateBlock(D3DSBT_ALL, &d3d9_state_block) < 0)
+        return;
+
+    // Backup the DX9 transform (DX9 documentation suggests that it is included in the StateBlock but it doesn't appear to)
+    D3DMATRIX last_world, last_view, last_projection;
+    g_pd3dDevice->GetTransform(D3DTS_WORLD, &last_world);
+    g_pd3dDevice->GetTransform(D3DTS_VIEW, &last_view);
+    g_pd3dDevice->GetTransform(D3DTS_PROJECTION, &last_projection);
+
+    // Copy all vertices into a single contiguous buffer
+    ImDrawVert *vtx_dst;
+    ImDrawIdx *idx_dst;
+    if (g_pVB->Lock(0, (UINT) (draw_data->TotalVtxCount * sizeof(ImDrawVert)), (void **) &vtx_dst,
+                    D3DLOCK_DISCARD) < 0)
+        return;
+    if (g_pIB->Lock(0, (UINT) (draw_data->TotalIdxCount * sizeof(ImDrawIdx)), (void **) &idx_dst,
+                    D3DLOCK_DISCARD) < 0)
+        return;
+    for (int n = 0; n < draw_data->CmdListsCount; n++) {
+        const ImDrawList *cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.Size;
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    g_pVB->Unlock();
+    g_pIB->Unlock();
+    g_pd3dDevice->SetStreamSource(0, g_pVB, 0, sizeof(ImDrawVert));
+    g_pd3dDevice->SetIndices(g_pIB);
+    g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
+
+    // Setup viewport
+    D3DVIEWPORT9 vp;
+    vp.X = vp.Y = 0;
+    vp.Width = (DWORD) draw_data->DisplaySize.x;
+    vp.Height = (DWORD) draw_data->DisplaySize.y;
+    vp.MinZ = 0.0f;
+    vp.MaxZ = 1.0f;
+    g_pd3dDevice->SetViewport(&vp);
+
+    g_pd3dDevice->SetPixelShader(nullptr);
+    g_pd3dDevice->SetVertexShader(nullptr);
+
+    D3DCAPS9 caps {};
+    if (FAILED(g_pd3dDevice->GetDeviceCaps(&caps))) {
+        caps.NumSimultaneousRTs = 0UL;
+    }
+
+    IDirect3DSurface9 *back_buffer = nullptr;
+    IDirect3DSurface9 *depth_stencil = nullptr;
+    IDirect3DSurface9 *render_targets[8];
+
+    // save all previous render target state
+    for (size_t target = 0; target < std::min(8UL, caps.NumSimultaneousRTs); target++) {
+        if (FAILED(g_pd3dDevice->GetRenderTarget(target, &render_targets[target]))) {
+            render_targets[target] = nullptr;
+        }
+    }
+
+    // get the previous depth stencil
+    if (FAILED(g_pd3dDevice->GetDepthStencilSurface(&depth_stencil))) {
+        depth_stencil = nullptr;
+    }
+
+    // set the back buffer as the current render target
+    if (SUCCEEDED(g_pd3dDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back_buffer))) {
+        g_pd3dDevice->SetRenderTarget(0, back_buffer);
+        g_pd3dDevice->SetDepthStencilSurface(nullptr);
+
+        for (size_t target = 1; target < std::min(8UL, caps.NumSimultaneousRTs); target++) {
+            g_pd3dDevice->SetRenderTarget(target, nullptr);
+        }
+    } else {
+        back_buffer = nullptr;
+    }
+
+    // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing, shade mode (for gradient)
+    g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
+    g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, false);
+    g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, false);
+    g_pd3dDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
+    g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, true);
+    g_pd3dDevice->SetRenderState(D3DRS_SHADEMODE, D3DSHADE_GOURAUD);
+    g_pd3dDevice->SetRenderState(D3DRS_FOGENABLE, false);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+
+    // Setup orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    // Being agnostic of whether <d3dx9.h> or <DirectXMath.h> can be used, we aren't relying on D3DXMatrixIdentity()/D3DXMatrixOrthoOffCenterLH() or DirectX::XMMatrixIdentity()/DirectX::XMMatrixOrthographicOffCenterLH()
+    {
+        float L = draw_data->DisplayPos.x + 0.5f;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x + 0.5f;
+        float T = draw_data->DisplayPos.y + 0.5f;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y + 0.5f;
+        D3DMATRIX mat_identity = {{{1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f}}};
+        D3DMATRIX mat_projection =
+                {{{
+                          2.0f / (R - L), 0.0f, 0.0f, 0.0f,
+                          0.0f, 2.0f / (T - B), 0.0f, 0.0f,
+                          0.0f, 0.0f, 0.5f, 0.0f,
+                          (L + R) / (L - R), (T + B) / (B - T), 0.5f, 1.0f
+                  }}};
+        g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_projection);
+    }
+
+    // Render command lists
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
+    for (int n = 0; n < draw_data->CmdListsCount; n++) {
+        const ImDrawList *cmd_list = draw_data->CmdLists[n];
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) {
+            const ImDrawCmd *pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback != NULL) {
+                pcmd->UserCallback(cmd_list, pcmd);
+            } else {
+                const RECT r = {(LONG) (pcmd->ClipRect.x - clip_off.x), (LONG) (pcmd->ClipRect.y - clip_off.y),
+                                (LONG) (pcmd->ClipRect.z - clip_off.x), (LONG) (pcmd->ClipRect.w - clip_off.y)};
+                auto texture = reinterpret_cast<IDirect3DBaseTexture9 *>(pcmd->TextureId);
+                g_pd3dDevice->SetTexture(0, texture);
+                g_pd3dDevice->SetScissorRect(&r);
+                g_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST,
+                                                   pcmd->VtxOffset + global_vtx_offset, 0,
+                                                   (UINT) cmd_list->VtxBuffer.Size,
+                                                   pcmd->IdxOffset + global_idx_offset, pcmd->ElemCount / 3);
+            }
+        }
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
+    }
+
+    if (back_buffer) {
+        back_buffer->Release();
+        back_buffer = nullptr;
+    }
+
+    // restore previous depth stencil
+    if (depth_stencil) {
+        g_pd3dDevice->SetDepthStencilSurface(depth_stencil);
+        depth_stencil->Release();
+        depth_stencil = nullptr;
+    }
+
+    // restore all render target state
+    for (size_t target = 0; target < std::min(8UL, caps.NumSimultaneousRTs); target++) {
+        auto render_target = render_targets[target];
+
+        if (render_target) {
+            g_pd3dDevice->SetRenderTarget(target, render_target);
+            render_target->Release();
+        }
+    }
+
+    // restore the DX9 transform
+    g_pd3dDevice->SetTransform(D3DTS_WORLD, &last_world);
+    g_pd3dDevice->SetTransform(D3DTS_VIEW, &last_view);
+    g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &last_projection);
+
+    // restore the DX9 state
+    d3d9_state_block->Apply();
+    d3d9_state_block->Release();
+}
+
+bool ImGui_ImplDX9_Init(IDirect3DDevice9 *device) {
+
+    // Setup back-end capabilities flags
+    auto &io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx9";
+
+    // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;
+
+    g_pd3dDevice = device;
+    g_pd3dDevice->AddRef();
+    return true;
+}
+
+void ImGui_ImplDX9_Shutdown() {
+    ImGui_ImplDX9_InvalidateDeviceObjects();
+
+    if (g_pd3dDevice) {
+        g_pd3dDevice->Release();
+        g_pd3dDevice = NULL;
+    }
+}
+
+static bool ImGui_ImplDX9_CreateFontsTexture() {
+    // Build texture atlas
+    ImGuiIO &io = ImGui::GetIO();
+    unsigned char *pixels;
+    int width, height, bytes_per_pixel;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height, &bytes_per_pixel);
+
+    // Upload texture to graphics system
+    g_FontTexture = NULL;
+    if (g_pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8,
+                                    D3DPOOL_DEFAULT, &g_FontTexture, NULL) < 0)
+        return false;
+    D3DLOCKED_RECT tex_locked_rect;
+    if (g_FontTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK)
+        return false;
+    for (int y = 0; y < height; y++)
+        memcpy((unsigned char *) tex_locked_rect.pBits + tex_locked_rect.Pitch * y,
+               pixels + (width * bytes_per_pixel) * y, (width * bytes_per_pixel));
+    g_FontTexture->UnlockRect(0);
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID) g_FontTexture;
+
+    return true;
+}
+
+bool ImGui_ImplDX9_CreateDeviceObjects() {
+    if (!g_pd3dDevice) {
+        return false;
+    }
+    return ImGui_ImplDX9_CreateFontsTexture();
+}
+
+void ImGui_ImplDX9_InvalidateDeviceObjects() {
+    if (!g_pd3dDevice)
+        return;
+    if (g_pVB) {
+        g_pVB->Release();
+        g_pVB = NULL;
+    }
+    if (g_pIB) {
+        g_pIB->Release();
+        g_pIB = NULL;
+    }
+    if (g_FontTexture) {
+        g_FontTexture->Release();
+        g_FontTexture = NULL;
+        ImGui::GetIO().Fonts->TexID = 0;
+    } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+}
+
+void ImGui_ImplDX9_NewFrame() {
+    if (!g_FontTexture) {
+        ImGui_ImplDX9_CreateDeviceObjects();
+    }
+
+    IDirect3DSwapChain9 *swap_chain = nullptr;
+    if (SUCCEEDED(g_pd3dDevice->GetSwapChain(0, &swap_chain))) {
+        auto &io = ImGui::GetIO();
+
+        D3DPRESENT_PARAMETERS present_params {};
+
+        if (SUCCEEDED(swap_chain->GetPresentParameters(&present_params))) {
+            if (present_params.BackBufferWidth != 0 && present_params.BackBufferHeight != 0) {
+                io.DisplaySize.x = static_cast<float>(present_params.BackBufferWidth);
+                io.DisplaySize.y = static_cast<float>(present_params.BackBufferHeight);
+            } else {
+                RECT rect {};
+                GetClientRect(present_params.hDeviceWindow, &rect);
+
+                io.DisplaySize.x = static_cast<float>(rect.right - rect.left);
+                io.DisplaySize.y = static_cast<float>(rect.bottom - rect.top);
+            }
+        }
+
+        swap_chain->Release();
+    }
+}
@@ -0,0 +1,25 @@
+// dear imgui: Renderer for DirectX9
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+#include "imgui.h"
+
+struct IDirect3DDevice9;
+
+IMGUI_IMPL_API bool     ImGui_ImplDX9_Init(IDirect3DDevice9 *device);
+IMGUI_IMPL_API void     ImGui_ImplDX9_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX9_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplDX9_RenderDrawData(ImDrawData *draw_data);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_IMPL_API bool     ImGui_ImplDX9_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplDX9_InvalidateDeviceObjects();
@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
-// COMPILE-TIME OPTIONS FOR DEAR IMGUI
+// DEAR IMGUI COMPILE-TIME OPTIONS
 // Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
 // You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
 //-----------------------------------------------------------------------------
@@ -9,7 +9,7 @@
 // You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
 // files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
 // Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
-// Call IMGUI_CHECKVERSION() from your .cpp files to verify that the data structures your files are using are matching the ones imgui.cpp is using.
+// Call IMGUI_CHECKVERSION() from your .cpp file to verify that the data structures your files are using are matching the ones imgui.cpp is using.
 //-----------------------------------------------------------------------------

 #pragma once
@@ -21,27 +21,29 @@

 //---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
 // Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
-// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
-// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
-//#define IMGUI_API __declspec( dllexport )
-//#define IMGUI_API __declspec( dllimport )
+// - Windows DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
+//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
+//#define IMGUI_API __declspec(dllexport)                   // MSVC Windows: DLL export
+//#define IMGUI_API __declspec(dllimport)                   // MSVC Windows: DLL import
+//#define IMGUI_API __attribute__((visibility("default")))  // GCC/Clang: override visibility when set is hidden

-//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
 //#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-//#define IMGUI_DISABLE_OBSOLETE_KEYIO                      // 1.87: disable legacy io.KeyMap[]+io.KeysDown[] in favor io.AddKeyEvent(). This will be folded into IMGUI_DISABLE_OBSOLETE_FUNCTIONS in a few versions.
+//#define IMGUI_DISABLE_OBSOLETE_KEYIO                      // 1.87+ disable legacy io.KeyMap[]+io.KeysDown[] in favor io.AddKeyEvent(). This is automatically done by IMGUI_DISABLE_OBSOLETE_FUNCTIONS.

 //---- Disable all of Dear ImGui or don't implement standard windows/tools.
 // It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
 //#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
-//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
-//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowStackToolWindow() will be empty (this was called IMGUI_DISABLE_METRICS_WINDOW before 1.88).
+#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
+//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.

 //---- Don't implement some functions to reduce linkage requirements.
 //#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
 #define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS          // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
 //#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
-//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, ime).
+//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
 //#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default platform_io.Platform_OpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
 //#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
 //#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
 //#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
@@ -49,8 +51,13 @@
 #define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
 //#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available

+//---- Enable Test Engine / Automation features.
+//#define IMGUI_ENABLE_TEST_ENGINE                          // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_config.h", see Test Engine for details.
+
 //---- Include imgui_user.h at the end of imgui.h as a convenience
+// May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
 //#define IMGUI_INCLUDE_IMGUI_USER_H
+//#define IMGUI_USER_H_FILENAME         "my_folder/my_imgui_user.h"

 //---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
 #define IMGUI_USE_BGRA_PACKED_COLOR
@@ -58,16 +65,17 @@
 //---- Performance optimization for DX9
 #define IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT struct ImDrawVert { ImVec2 pos; float z; ImU32 col; ImVec2 uv; }

-//---- Use 32-bit for ImWchar (default is 16-bit) to support unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
+//---- Use 32-bit for ImWchar (default is 16-bit) to support Unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
 //#define IMGUI_USE_WCHAR32

 //---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
 // By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
 //#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
 //#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
-//#define IMGUI_STB_SPRINTF_FILENAME    "my_folder/stb_sprintf.h"    // only used if enabled
+//#define IMGUI_STB_SPRINTF_FILENAME    "my_folder/stb_sprintf.h"    // only used if IMGUI_USE_STB_SPRINTF is defined.
 //#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
 //#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION                   // only disabled if IMGUI_USE_STB_SPRINTF is defined.

 //---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
 // Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
@@ -78,6 +86,15 @@
 // On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
 //#define IMGUI_ENABLE_FREETYPE

+//---- Use FreeType + plutosvg or lunasvg to render OpenType SVG fonts (SVGinOT)
+// Only works in combination with IMGUI_ENABLE_FREETYPE.
+// - lunasvg is currently easier to acquire/install, as e.g. it is part of vcpkg.
+// - plutosvg will support more fonts and may load them faster. It currently requires to be built manually but it is fairly easy. See misc/freetype/README for instructions.
+// - Both require headers to be available in the include path + program to be linked with the library code (not provided).
+// - (note: lunasvg implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
+//#define IMGUI_ENABLE_FREETYPE_PLUTOSVG
+//#define IMGUI_ENABLE_FREETYPE_LUNASVG
+
 //---- Use stb_truetype to build and rasterize the font atlas (default)
 // The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
 //#define IMGUI_ENABLE_STB_TRUETYPE
@@ -108,7 +125,7 @@
 //typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
 //#define ImDrawCallback MyImDrawCallback

-//---- Debug Tools: Macro to break in Debugger
+//---- Debug Tools: Macro to break in Debugger (we provide a default implementation of this in the codebase)
 // (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
 //#define IM_DEBUG_BREAK  IM_ASSERT(0)
 //#define IM_DEBUG_BREAK  __debugbreak()
@@ -116,10 +133,10 @@
 //---- Debug Tools: Enable slower asserts
 //#define IMGUI_DEBUG_PARANOID

-//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
+//---- Tip: You can add extra functions within the ImGui:: namespace from anywhere (e.g. your own sources/header files)
 /*
 namespace ImGui
 {
-    void MyFunction(const char* name, const MyMatrix44& v);
+    void MyFunction(const char* name, MyMatrix44* mtx);
 }
 */
@@ -2,8 +2,11 @@
 // This is a slightly modified version of stb_textedit.h 1.14.
 // Those changes would need to be pushed into nothings/stb:
 // - Fix in stb_textedit_discard_redo (see https://github.com/nothings/stb/issues/321)
-// - Fix in stb_textedit_find_charpos to handle last line (see https://github.com/ocornut/imgui/issues/6000)
+// - Fix in stb_textedit_find_charpos to handle last line (see https://github.com/ocornut/imgui/issues/6000 + #6783)
+// - Added name to struct or it may be forward declared in our code.
+// - Added UTF-8 support (see https://github.com/nothings/stb/issues/188 + https://github.com/ocornut/imgui/pull/7925)
 // Grep for [DEAR IMGUI] to find the changes.
+// - Also renamed macros used or defined outside of IMSTB_TEXTEDIT_IMPLEMENTATION block from STB_TEXTEDIT_* to IMSTB_TEXTEDIT_*

 // stb_textedit.h - v1.14  - public domain - Sean Barrett
 // Development of this library was sponsored by RAD Game Tools
@@ -30,7 +33,7 @@
 // DEPENDENCIES
 //
 // Uses the C runtime function 'memmove', which you can override
-// by defining STB_TEXTEDIT_memmove before the implementation.
+// by defining IMSTB_TEXTEDIT_memmove before the implementation.
 // Uses no other functions. Performs no runtime allocations.
 //
 //
@@ -40,7 +43,7 @@
 //   1.13 (2019-02-07) fix bug in undo size management
 //   1.12 (2018-01-29) user can change STB_TEXTEDIT_KEYTYPE, fix redo to avoid crash
 //   1.11 (2017-03-03) fix HOME on last line, dragging off single-line textfield
-//   1.10 (2016-10-25) supress warnings about casting away const with -Wcast-qual
+//   1.10 (2016-10-25) suppress warnings about casting away const with -Wcast-qual
 //   1.9  (2016-08-27) customizable move-by-word
 //   1.8  (2016-04-02) better keyboard handling when mouse button is down
 //   1.7  (2015-09-13) change y range handling in case baseline is non-0
@@ -208,6 +211,7 @@
 //    int  stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 //    int  stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int len)
 //    void stb_textedit_key(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXEDIT_KEYTYPE key)
+//    void stb_textedit_text(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int text_len)
 //
 //    Each of these functions potentially updates the string and updates the
 //    state.
@@ -242,7 +246,12 @@
 //          various definitions like STB_TEXTEDIT_K_LEFT have the is-key-event bit
 //          set, and make STB_TEXTEDIT_KEYTOCHAR check that the is-key-event bit is
 //          clear. STB_TEXTEDIT_KEYTYPE defaults to int, but you can #define it to
-//          anything other type you wante before including.
+//          anything other type you want before including.
+//          if the STB_TEXTEDIT_KEYTOTEXT function is defined, selected keys are
+//          transformed into text and stb_textedit_text() is automatically called.
+//
+//      text: [DEAR IMGUI] added 2024-09
+//          call this to text inputs sent to the textfield.
 //
 //
 //   When rendering, you can read the cursor position and selection state from
@@ -274,8 +283,8 @@
 ////
 ////

-#ifndef INCLUDE_STB_TEXTEDIT_H
-#define INCLUDE_STB_TEXTEDIT_H
+#ifndef INCLUDE_IMSTB_TEXTEDIT_H
+#define INCLUDE_IMSTB_TEXTEDIT_H

 ////////////////////////////////////////////////////////////////////////
 //
@@ -286,38 +295,38 @@
 // and undo state.
 //

-#ifndef STB_TEXTEDIT_UNDOSTATECOUNT
-#define STB_TEXTEDIT_UNDOSTATECOUNT   99
+#ifndef IMSTB_TEXTEDIT_UNDOSTATECOUNT
+#define IMSTB_TEXTEDIT_UNDOSTATECOUNT   99
 #endif
-#ifndef STB_TEXTEDIT_UNDOCHARCOUNT
-#define STB_TEXTEDIT_UNDOCHARCOUNT   999
+#ifndef IMSTB_TEXTEDIT_UNDOCHARCOUNT
+#define IMSTB_TEXTEDIT_UNDOCHARCOUNT   999
 #endif
-#ifndef STB_TEXTEDIT_CHARTYPE
-#define STB_TEXTEDIT_CHARTYPE        int
+#ifndef IMSTB_TEXTEDIT_CHARTYPE
+#define IMSTB_TEXTEDIT_CHARTYPE        int
 #endif
-#ifndef STB_TEXTEDIT_POSITIONTYPE
-#define STB_TEXTEDIT_POSITIONTYPE    int
+#ifndef IMSTB_TEXTEDIT_POSITIONTYPE
+#define IMSTB_TEXTEDIT_POSITIONTYPE    int
 #endif

 typedef struct
 {
   // private data
-   STB_TEXTEDIT_POSITIONTYPE  where;
-   STB_TEXTEDIT_POSITIONTYPE  insert_length;
-   STB_TEXTEDIT_POSITIONTYPE  delete_length;
+   IMSTB_TEXTEDIT_POSITIONTYPE  where;
+   IMSTB_TEXTEDIT_POSITIONTYPE  insert_length;
+   IMSTB_TEXTEDIT_POSITIONTYPE  delete_length;
   int                        char_storage;
 } StbUndoRecord;

 typedef struct
 {
   // private data
-   StbUndoRecord          undo_rec [STB_TEXTEDIT_UNDOSTATECOUNT];
-   STB_TEXTEDIT_CHARTYPE  undo_char[STB_TEXTEDIT_UNDOCHARCOUNT];
+   StbUndoRecord          undo_rec [IMSTB_TEXTEDIT_UNDOSTATECOUNT];
+   IMSTB_TEXTEDIT_CHARTYPE  undo_char[IMSTB_TEXTEDIT_UNDOCHARCOUNT];
   short undo_point, redo_point;
   int undo_char_point, redo_char_point;
 } StbUndoState;

-typedef struct
+typedef struct STB_TexteditState
 {
   /////////////////////
   //
@@ -371,7 +380,7 @@ typedef struct
   float ymin,ymax;         // height of row above and below baseline
   int num_chars;
 } StbTexteditRow;
-#endif //INCLUDE_STB_TEXTEDIT_H
+#endif //INCLUDE_IMSTB_TEXTEDIT_H


 ////////////////////////////////////////////////////////////////////////////
@@ -384,11 +393,11 @@ typedef struct

 // implementation isn't include-guarded, since it might have indirectly
 // included just the "header" portion
-#ifdef STB_TEXTEDIT_IMPLEMENTATION
+#ifdef IMSTB_TEXTEDIT_IMPLEMENTATION

-#ifndef STB_TEXTEDIT_memmove
+#ifndef IMSTB_TEXTEDIT_memmove
 #include <string.h>
-#define STB_TEXTEDIT_memmove memmove
+#define IMSTB_TEXTEDIT_memmove memmove
 #endif


@@ -398,7 +407,7 @@ typedef struct
 //

 // traverse the layout to locate the nearest character to a display position
-static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y)
+static int stb_text_locate_coord(IMSTB_TEXTEDIT_STRING *str, float x, float y)
 {
   StbTexteditRow r;
   int n = STB_TEXTEDIT_STRINGLEN(str);
@@ -437,13 +446,13 @@ static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y)
   if (x < r.x1) {
      // search characters in row for one that straddles 'x'
      prev_x = r.x0;
-      for (k=0; k < r.num_chars; ++k) {
+      for (k=0; k < r.num_chars; k = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, i + k) - i) {
         float w = STB_TEXTEDIT_GETWIDTH(str, i, k);
         if (x < prev_x+w) {
            if (x < prev_x+w/2)
               return k+i;
            else
-               return k+i+1;
+               return IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, i + k);
         }
         prev_x += w;
      }
@@ -458,7 +467,7 @@ static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y)
 }

 // API click: on mouse down, move the cursor to the clicked location, and reset the selection
-static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
+static void stb_textedit_click(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
 {
   // In single-line mode, just always make y = 0. This lets the drag keep working if the mouse
   // goes off the top or bottom of the text
@@ -476,7 +485,7 @@ static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *stat
 }

 // API drag: on mouse drag, move the cursor and selection endpoint to the clicked location
-static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
+static void stb_textedit_drag(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
 {
   int p = 0;

@@ -502,11 +511,11 @@ static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state
 //

 // forward declarations
-static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state);
-static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state);
-static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length);
+static void stb_text_undo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state);
+static void stb_text_redo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state);
+static void stb_text_makeundo_delete(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length);
 static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int length);
-static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length);
+static void stb_text_makeundo_replace(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length);

 typedef struct
 {
@@ -518,7 +527,7 @@ typedef struct

 // find the x/y location of a character, and remember info about the previous row in
 // case we get a move-up event (for page up, we'll have to rescan)
-static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *str, int n, int single_line)
+static void stb_textedit_find_charpos(StbFindState *find, IMSTB_TEXTEDIT_STRING *str, int n, int single_line)
 {
   StbTexteditRow r;
   int prev_start = 0;
@@ -549,7 +558,10 @@ static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *s
      i += r.num_chars;
      find->y += r.baseline_y_delta;
      if (i == z) // [DEAR IMGUI]
+      {
+         r.num_chars = 0; // [DEAR IMGUI]
         break;   // [DEAR IMGUI]
+      }
   }

   find->first_char = first = i;
@@ -559,14 +571,14 @@ static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *s

   // now scan to find xpos
   find->x = r.x0;
-   for (i=0; first+i < n; ++i)
+   for (i=0; first+i < n; i = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, first + i) - first)
      find->x += STB_TEXTEDIT_GETWIDTH(str, first, i);
 }

 #define STB_TEXT_HAS_SELECTION(s)   ((s)->select_start != (s)->select_end)

 // make the selection/cursor state valid if client altered the string
-static void stb_textedit_clamp(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_textedit_clamp(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
   int n = STB_TEXTEDIT_STRINGLEN(str);
   if (STB_TEXT_HAS_SELECTION(state)) {
@@ -580,7 +592,7 @@ static void stb_textedit_clamp(STB_TEXTEDIT_STRING *str, STB_TexteditState *stat
 }

 // delete characters while updating undo
-static void stb_textedit_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int len)
+static void stb_textedit_delete(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int len)
 {
   stb_text_makeundo_delete(str, state, where, len);
   STB_TEXTEDIT_DELETECHARS(str, where, len);
@@ -588,7 +600,7 @@ static void stb_textedit_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *sta
 }

 // delete the section
-static void stb_textedit_delete_selection(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_textedit_delete_selection(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
   stb_textedit_clamp(str, state);
   if (STB_TEXT_HAS_SELECTION(state)) {
@@ -625,7 +637,7 @@ static void stb_textedit_move_to_first(STB_TexteditState *state)
 }

 // move cursor to last character of selection
-static void stb_textedit_move_to_last(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_textedit_move_to_last(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
   if (STB_TEXT_HAS_SELECTION(state)) {
      stb_textedit_sortselection(state);
@@ -636,14 +648,25 @@ static void stb_textedit_move_to_last(STB_TEXTEDIT_STRING *str, STB_TexteditStat
   }
 }

+// [DEAR IMGUI]
+// Functions must be implemented for UTF8 support
+// Code in this file that uses those functions is modified for [DEAR IMGUI] and deviates from the original stb_textedit.
+// There is not necessarily a '[DEAR IMGUI]' at the usage sites.
+#ifndef IMSTB_TEXTEDIT_GETPREVCHARINDEX
+#define IMSTB_TEXTEDIT_GETPREVCHARINDEX(obj, idx) (idx - 1)
+#endif
+#ifndef IMSTB_TEXTEDIT_GETNEXTCHARINDEX
+#define IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx) (idx + 1)
+#endif
+
 #ifdef STB_TEXTEDIT_IS_SPACE
-static int is_word_boundary( STB_TEXTEDIT_STRING *str, int idx )
+static int is_word_boundary( IMSTB_TEXTEDIT_STRING *str, int idx )
 {
   return idx > 0 ? (STB_TEXTEDIT_IS_SPACE( STB_TEXTEDIT_GETCHAR(str,idx-1) ) && !STB_TEXTEDIT_IS_SPACE( STB_TEXTEDIT_GETCHAR(str, idx) ) ) : 1;
 }

 #ifndef STB_TEXTEDIT_MOVEWORDLEFT
-static int stb_textedit_move_to_word_previous( STB_TEXTEDIT_STRING *str, int c )
+static int stb_textedit_move_to_word_previous( IMSTB_TEXTEDIT_STRING *str, int c )
 {
   --c; // always move at least one character
   while( c >= 0 && !is_word_boundary( str, c ) )
@@ -658,7 +681,7 @@ static int stb_textedit_move_to_word_previous( STB_TEXTEDIT_STRING *str, int c )
 #endif

 #ifndef STB_TEXTEDIT_MOVEWORDRIGHT
-static int stb_textedit_move_to_word_next( STB_TEXTEDIT_STRING *str, int c )
+static int stb_textedit_move_to_word_next( IMSTB_TEXTEDIT_STRING *str, int c )
 {
   const int len = STB_TEXTEDIT_STRINGLEN(str);
   ++c; // always move at least one character
@@ -685,7 +708,7 @@ static void stb_textedit_prep_selection_at_cursor(STB_TexteditState *state)
 }

 // API cut: delete selection
-static int stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static int stb_textedit_cut(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
   if (STB_TEXT_HAS_SELECTION(state)) {
      stb_textedit_delete_selection(str,state); // implicitly clamps
@@ -696,7 +719,7 @@ static int stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 }

 // API paste: replace existing selection with passed-in text
-static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int len)
+static int stb_textedit_paste_internal(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, IMSTB_TEXTEDIT_CHARTYPE *text, int len)
 {
   // if there's a selection, the paste should delete it
   stb_textedit_clamp(str, state);
@@ -716,36 +739,44 @@ static int stb_textedit_paste_internal(STB_TEXTEDIT_STRING *str, STB_TexteditSta
 #define STB_TEXTEDIT_KEYTYPE int
 #endif

+// [DEAR IMGUI] Added stb_textedit_text(), extracted out and called by stb_textedit_key() for backward compatibility.
+static void stb_textedit_text(IMSTB_TEXTEDIT_STRING* str, STB_TexteditState* state, const IMSTB_TEXTEDIT_CHARTYPE* text, int text_len)
+{
+   // can't add newline in single-line mode
+   if (text[0] == '\n' && state->single_line)
+      return;
+
+   if (state->insert_mode && !STB_TEXT_HAS_SELECTION(state) && state->cursor < STB_TEXTEDIT_STRINGLEN(str)) {
+      stb_text_makeundo_replace(str, state, state->cursor, 1, 1);
+      STB_TEXTEDIT_DELETECHARS(str, state->cursor, 1);
+      if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, text_len)) {
+         state->cursor += text_len;
+         state->has_preferred_x = 0;
+      }
+   }
+   else {
+      stb_textedit_delete_selection(str, state); // implicitly clamps
+      if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, text_len)) {
+         stb_text_makeundo_insert(state, state->cursor, text_len);
+         state->cursor += text_len;
+         state->has_preferred_x = 0;
+      }
+   }
+}
+
 // API key: process a keyboard input
-static void stb_textedit_key(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_KEYTYPE key)
+static void stb_textedit_key(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_KEYTYPE key)
 {
 retry:
   switch (key) {
      default: {
+#ifdef STB_TEXTEDIT_KEYTOTEXT
         int c = STB_TEXTEDIT_KEYTOTEXT(key);
         if (c > 0) {
-            STB_TEXTEDIT_CHARTYPE ch = (STB_TEXTEDIT_CHARTYPE) c;
-
-            // can't add newline in single-line mode
-            if (c == '\n' && state->single_line)
-               break;
-
-            if (state->insert_mode && !STB_TEXT_HAS_SELECTION(state) && state->cursor < STB_TEXTEDIT_STRINGLEN(str)) {
-               stb_text_makeundo_replace(str, state, state->cursor, 1, 1);
-               STB_TEXTEDIT_DELETECHARS(str, state->cursor, 1);
-               if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) {
-                  ++state->cursor;
-                  state->has_preferred_x = 0;
-               }
-            } else {
-               stb_textedit_delete_selection(str,state); // implicitly clamps
-               if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) {
-                  stb_text_makeundo_insert(state, state->cursor, 1);
-                  ++state->cursor;
-                  state->has_preferred_x = 0;
-               }
-            }
+            IMSTB_TEXTEDIT_CHARTYPE ch = (IMSTB_TEXTEDIT_CHARTYPE)c;
+            stb_textedit_text(str, state, &ch, 1);
         }
+#endif
         break;
      }

@@ -771,7 +802,7 @@ retry:
            stb_textedit_move_to_first(state);
         else
            if (state->cursor > 0)
-               --state->cursor;
+               state->cursor = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->cursor);
         state->has_preferred_x = 0;
         break;

@@ -780,7 +811,7 @@ retry:
         if (STB_TEXT_HAS_SELECTION(state))
            stb_textedit_move_to_last(str, state);
         else
-            ++state->cursor;
+            state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
         stb_textedit_clamp(str, state);
         state->has_preferred_x = 0;
         break;
@@ -790,7 +821,7 @@ retry:
         stb_textedit_prep_selection_at_cursor(state);
         // move selection left
         if (state->select_end > 0)
-            --state->select_end;
+            state->select_end = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->select_end);
         state->cursor = state->select_end;
         state->has_preferred_x = 0;
         break;
@@ -840,7 +871,7 @@ retry:
      case STB_TEXTEDIT_K_RIGHT | STB_TEXTEDIT_K_SHIFT:
         stb_textedit_prep_selection_at_cursor(state);
         // move selection right
-         ++state->select_end;
+         state->select_end = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->select_end);
         stb_textedit_clamp(str, state);
         state->cursor = state->select_end;
         state->has_preferred_x = 0;
@@ -889,14 +920,14 @@ retry:
            x = row.x0;
            for (i=0; i < row.num_chars; ++i) {
               float dx = STB_TEXTEDIT_GETWIDTH(str, start, i);
-               #ifdef STB_TEXTEDIT_GETWIDTH_NEWLINE
-               if (dx == STB_TEXTEDIT_GETWIDTH_NEWLINE)
+               #ifdef IMSTB_TEXTEDIT_GETWIDTH_NEWLINE
+               if (dx == IMSTB_TEXTEDIT_GETWIDTH_NEWLINE)
                  break;
               #endif
               x += dx;
               if (x > goal_x)
                  break;
-               ++state->cursor;
+               state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
            }
            stb_textedit_clamp(str, state);

@@ -951,14 +982,14 @@ retry:
            x = row.x0;
            for (i=0; i < row.num_chars; ++i) {
               float dx = STB_TEXTEDIT_GETWIDTH(str, find.prev_first, i);
-               #ifdef STB_TEXTEDIT_GETWIDTH_NEWLINE
-               if (dx == STB_TEXTEDIT_GETWIDTH_NEWLINE)
+               #ifdef IMSTB_TEXTEDIT_GETWIDTH_NEWLINE
+               if (dx == IMSTB_TEXTEDIT_GETWIDTH_NEWLINE)
                  break;
               #endif
               x += dx;
               if (x > goal_x)
                  break;
-               ++state->cursor;
+               state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
            }
            stb_textedit_clamp(str, state);

@@ -986,7 +1017,7 @@ retry:
         else {
            int n = STB_TEXTEDIT_STRINGLEN(str);
            if (state->cursor < n)
-               stb_textedit_delete(str, state, state->cursor, 1);
+               stb_textedit_delete(str, state, state->cursor, IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor) - state->cursor);
         }
         state->has_preferred_x = 0;
         break;
@@ -998,8 +1029,9 @@ retry:
         else {
            stb_textedit_clamp(str, state);
            if (state->cursor > 0) {
-               stb_textedit_delete(str, state, state->cursor-1, 1);
-               --state->cursor;
+               int prev = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->cursor);
+               stb_textedit_delete(str, state, prev, state->cursor - prev);
+               state->cursor = prev;
            }
         }
         state->has_preferred_x = 0;
@@ -1109,8 +1141,8 @@ retry:

 static void stb_textedit_flush_redo(StbUndoState *state)
 {
-   state->redo_point = STB_TEXTEDIT_UNDOSTATECOUNT;
-   state->redo_char_point = STB_TEXTEDIT_UNDOCHARCOUNT;
+   state->redo_point = IMSTB_TEXTEDIT_UNDOSTATECOUNT;
+   state->redo_char_point = IMSTB_TEXTEDIT_UNDOCHARCOUNT;
 }

 // discard the oldest entry in the undo list
@@ -1122,13 +1154,13 @@ static void stb_textedit_discard_undo(StbUndoState *state)
         int n = state->undo_rec[0].insert_length, i;
         // delete n characters from all other records
         state->undo_char_point -= n;
-         STB_TEXTEDIT_memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE)));
+         IMSTB_TEXTEDIT_memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(IMSTB_TEXTEDIT_CHARTYPE)));
         for (i=0; i < state->undo_point; ++i)
            if (state->undo_rec[i].char_storage >= 0)
               state->undo_rec[i].char_storage -= n; // @OPTIMIZE: get rid of char_storage and infer it
      }
      --state->undo_point;
-      STB_TEXTEDIT_memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
+      IMSTB_TEXTEDIT_memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
   }
 }

@@ -1138,7 +1170,7 @@ static void stb_textedit_discard_undo(StbUndoState *state)
 // fill up even though the undo buffer didn't
 static void stb_textedit_discard_redo(StbUndoState *state)
 {
-   int k = STB_TEXTEDIT_UNDOSTATECOUNT-1;
+   int k = IMSTB_TEXTEDIT_UNDOSTATECOUNT-1;

   if (state->redo_point <= k) {
      // if the k'th undo state has characters, clean those up
@@ -1146,7 +1178,7 @@ static void stb_textedit_discard_redo(StbUndoState *state)
         int n = state->undo_rec[k].insert_length, i;
         // move the remaining redo character data to the end of the buffer
         state->redo_char_point += n;
-         STB_TEXTEDIT_memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((STB_TEXTEDIT_UNDOCHARCOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE)));
+         IMSTB_TEXTEDIT_memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((IMSTB_TEXTEDIT_UNDOCHARCOUNT - state->redo_char_point)*sizeof(IMSTB_TEXTEDIT_CHARTYPE)));
         // adjust the position of all the other records to account for above memmove
         for (i=state->redo_point; i < k; ++i)
            if (state->undo_rec[i].char_storage >= 0)
@@ -1154,12 +1186,12 @@ static void stb_textedit_discard_redo(StbUndoState *state)
      }
      // now move all the redo records towards the end of the buffer; the first one is at 'redo_point'
      // [DEAR IMGUI]
-      size_t move_size = (size_t)((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point - 1) * sizeof(state->undo_rec[0]));
+      size_t move_size = (size_t)((IMSTB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point - 1) * sizeof(state->undo_rec[0]));
      const char* buf_begin = (char*)state->undo_rec; (void)buf_begin;
      const char* buf_end   = (char*)state->undo_rec + sizeof(state->undo_rec); (void)buf_end;
      IM_ASSERT(((char*)(state->undo_rec + state->redo_point)) >= buf_begin);
      IM_ASSERT(((char*)(state->undo_rec + state->redo_point + 1) + move_size) <= buf_end);
-      STB_TEXTEDIT_memmove(state->undo_rec + state->redo_point+1, state->undo_rec + state->redo_point, move_size);
+      IMSTB_TEXTEDIT_memmove(state->undo_rec + state->redo_point+1, state->undo_rec + state->redo_point, move_size);

      // now move redo_point to point to the new one
      ++state->redo_point;
@@ -1173,32 +1205,32 @@ static StbUndoRecord *stb_text_create_undo_record(StbUndoState *state, int numch

   // if we have no free records, we have to make room, by sliding the
   // existing records down
-   if (state->undo_point == STB_TEXTEDIT_UNDOSTATECOUNT)
+   if (state->undo_point == IMSTB_TEXTEDIT_UNDOSTATECOUNT)
      stb_textedit_discard_undo(state);

   // if the characters to store won't possibly fit in the buffer, we can't undo
-   if (numchars > STB_TEXTEDIT_UNDOCHARCOUNT) {
+   if (numchars > IMSTB_TEXTEDIT_UNDOCHARCOUNT) {
      state->undo_point = 0;
      state->undo_char_point = 0;
      return NULL;
   }

   // if we don't have enough free characters in the buffer, we have to make room
-   while (state->undo_char_point + numchars > STB_TEXTEDIT_UNDOCHARCOUNT)
+   while (state->undo_char_point + numchars > IMSTB_TEXTEDIT_UNDOCHARCOUNT)
      stb_textedit_discard_undo(state);

   return &state->undo_rec[state->undo_point++];
 }

-static STB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos, int insert_len, int delete_len)
+static IMSTB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos, int insert_len, int delete_len)
 {
   StbUndoRecord *r = stb_text_create_undo_record(state, insert_len);
   if (r == NULL)
      return NULL;

   r->where = pos;
-   r->insert_length = (STB_TEXTEDIT_POSITIONTYPE) insert_len;
-   r->delete_length = (STB_TEXTEDIT_POSITIONTYPE) delete_len;
+   r->insert_length = (IMSTB_TEXTEDIT_POSITIONTYPE) insert_len;
+   r->delete_length = (IMSTB_TEXTEDIT_POSITIONTYPE) delete_len;

   if (insert_len == 0) {
      r->char_storage = -1;
@@ -1210,7 +1242,7 @@ static STB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos,
   }
 }

-static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_text_undo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
   StbUndoState *s = &state->undostate;
   StbUndoRecord u, *r;
@@ -1237,7 +1269,7 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
      //    characters stored for *undoing* don't leave room for redo
      // if the last is true, we have to bail

-      if (s->undo_char_point + u.delete_length >= STB_TEXTEDIT_UNDOCHARCOUNT) {
+      if (s->undo_char_point + u.delete_length >= IMSTB_TEXTEDIT_UNDOCHARCOUNT) {
         // the undo records take up too much character space; there's no space to store the redo characters
         r->insert_length = 0;
      } else {
@@ -1246,7 +1278,7 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
         // there's definitely room to store the characters eventually
         while (s->undo_char_point + u.delete_length > s->redo_char_point) {
            // should never happen:
-            if (s->redo_point == STB_TEXTEDIT_UNDOSTATECOUNT)
+            if (s->redo_point == IMSTB_TEXTEDIT_UNDOSTATECOUNT)
               return;
            // there's currently not enough room, so discard a redo record
            stb_textedit_discard_redo(s);
@@ -1278,11 +1310,11 @@ static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
   s->redo_point--;
 }

-static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
+static void stb_text_redo(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 {
   StbUndoState *s = &state->undostate;
   StbUndoRecord *u, r;
-   if (s->redo_point == STB_TEXTEDIT_UNDOSTATECOUNT)
+   if (s->redo_point == IMSTB_TEXTEDIT_UNDOSTATECOUNT)
      return;

   // we need to do two things: apply the redo record, and create an undo record
@@ -1334,20 +1366,20 @@ static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int le
   stb_text_createundo(&state->undostate, where, 0, length);
 }

-static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length)
+static void stb_text_makeundo_delete(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length)
 {
   int i;
-   STB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, length, 0);
+   IMSTB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, length, 0);
   if (p) {
      for (i=0; i < length; ++i)
         p[i] = STB_TEXTEDIT_GETCHAR(str, where+i);
   }
 }

-static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length)
+static void stb_text_makeundo_replace(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length)
 {
   int i;
-   STB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, old_length, new_length);
+   IMSTB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, old_length, new_length);
   if (p) {
      for (i=0; i < old_length; ++i)
         p[i] = STB_TEXTEDIT_GETCHAR(str, where+i);
@@ -1359,8 +1391,8 @@ static void stb_textedit_clear_state(STB_TexteditState *state, int is_single_lin
 {
   state->undostate.undo_point = 0;
   state->undostate.undo_char_point = 0;
-   state->undostate.redo_point = STB_TEXTEDIT_UNDOSTATECOUNT;
-   state->undostate.redo_char_point = STB_TEXTEDIT_UNDOCHARCOUNT;
+   state->undostate.redo_point = IMSTB_TEXTEDIT_UNDOSTATECOUNT;
+   state->undostate.redo_char_point = IMSTB_TEXTEDIT_UNDOCHARCOUNT;
   state->select_end = state->select_start = 0;
   state->cursor = 0;
   state->has_preferred_x = 0;
@@ -1383,16 +1415,16 @@ static void stb_textedit_initialize_state(STB_TexteditState *state, int is_singl
 #pragma GCC diagnostic ignored "-Wcast-qual"
 #endif

-static int stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE const *ctext, int len)
+static int stb_textedit_paste(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, IMSTB_TEXTEDIT_CHARTYPE const *ctext, int len)
 {
-   return stb_textedit_paste_internal(str, state, (STB_TEXTEDIT_CHARTYPE *) ctext, len);
+   return stb_textedit_paste_internal(str, state, (IMSTB_TEXTEDIT_CHARTYPE *) ctext, len);
 }

 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif

-#endif//STB_TEXTEDIT_IMPLEMENTATION
+#endif//IMSTB_TEXTEDIT_IMPLEMENTATION

 /*
 ------------------------------------------------------------------------------
@@ -656,7 +656,7 @@ STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h
 STBTT_DEF void stbtt_PackSetSkipMissingCodepoints(stbtt_pack_context *spc, int skip);
 // If skip != 0, this tells stb_truetype to skip any codepoints for which
 // there is no corresponding glyph. If skip=0, which is the default, then
-// codepoints without a glyph recived the font's "missing character" glyph,
+// codepoints without a glyph received the font's "missing character" glyph,
 // typically an empty box by convention.

 STBTT_DEF void stbtt_GetPackedQuad(const stbtt_packedchar *chardata, int pw, int ph,  // same data as above
@@ -0,0 +1,85 @@
+// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
+// This is also an example of how you may wrap your own similar types.
+
+// Changelog:
+// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
+
+// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:
+//   https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness
+
+#include "imgui.h"
+#include "imgui_stdlib.h"
+
+// Clang warnings with -Weverything
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wsign-conversion"    // warning: implicit conversion changes signedness
+#endif
+
+struct InputTextCallback_UserData
+{
+    std::string*            Str;
+    ImGuiInputTextCallback  ChainCallback;
+    void*                   ChainCallbackUserData;
+};
+
+static int InputTextCallback(ImGuiInputTextCallbackData* data)
+{
+    InputTextCallback_UserData* user_data = (InputTextCallback_UserData*)data->UserData;
+    if (data->EventFlag == ImGuiInputTextFlags_CallbackResize)
+    {
+        // Resize string callback
+        // If for some reason we refuse the new length (BufTextLen) and/or capacity (BufSize) we need to set them back to what we want.
+        std::string* str = user_data->Str;
+        IM_ASSERT(data->Buf == str->c_str());
+        str->resize(data->BufTextLen);
+        data->Buf = (char*)str->c_str();
+    }
+    else if (user_data->ChainCallback)
+    {
+        // Forward to user callback, if any
+        data->UserData = user_data->ChainCallbackUserData;
+        return user_data->ChainCallback(data);
+    }
+    return 0;
+}
+
+bool ImGui::InputText(const char* label, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
+    flags |= ImGuiInputTextFlags_CallbackResize;
+
+    InputTextCallback_UserData cb_user_data;
+    cb_user_data.Str = str;
+    cb_user_data.ChainCallback = callback;
+    cb_user_data.ChainCallbackUserData = user_data;
+    return InputText(label, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
+}
+
+bool ImGui::InputTextMultiline(const char* label, std::string* str, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
+    flags |= ImGuiInputTextFlags_CallbackResize;
+
+    InputTextCallback_UserData cb_user_data;
+    cb_user_data.Str = str;
+    cb_user_data.ChainCallback = callback;
+    cb_user_data.ChainCallbackUserData = user_data;
+    return InputTextMultiline(label, (char*)str->c_str(), str->capacity() + 1, size, flags, InputTextCallback, &cb_user_data);
+}
+
+bool ImGui::InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
+    flags |= ImGuiInputTextFlags_CallbackResize;
+
+    InputTextCallback_UserData cb_user_data;
+    cb_user_data.Str = str;
+    cb_user_data.ChainCallback = callback;
+    cb_user_data.ChainCallbackUserData = user_data;
+    return InputTextWithHint(label, hint, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
+}
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
@@ -0,0 +1,21 @@
+// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
+// This is also an example of how you may wrap your own similar types.
+
+// Changelog:
+// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
+
+// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:
+//   https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness
+
+#pragma once
+
+#include <string>
+
+namespace ImGui
+{
+    // ImGui::InputText() with std::string
+    // Because text input needs dynamic resizing, we need to setup a callback to grow the capacity
+    IMGUI_API bool  InputText(const char* label, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
+    IMGUI_API bool  InputTextMultiline(const char* label, std::string* str, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
+    IMGUI_API bool  InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
+}
@@ -1,643 +0,0 @@
-/** @file GuillotineBinPack.cpp
-	@author Jukka Jylänki
-
-	@brief Implements different bin packer algorithms that use the GUILLOTINE data structure.
-
-	This work is released to Public Domain, do whatever you want with it.
-*/
-#include <utility>
-#include <iostream>
-#include <limits>
-#include <algorithm>
-
-#include <cassert>
-#include <cstring>
-#include <cmath>
-
-#include "GuillotineBinPack.h"
-
-#pragma warning( disable : 4267 ) 
-
-namespace rbp {
-
-using namespace std;
-
-GuillotineBinPack::GuillotineBinPack()
-:binWidth(0),
-binHeight(0)
-{
-}
-
-GuillotineBinPack::GuillotineBinPack(int width, int height)
-{
-	Init(width, height);
-}
-
-void GuillotineBinPack::Init(int width, int height)
-{
-	binWidth = width;
-	binHeight = height;
-
-#ifdef _DEBUG
-	disjointRects.Clear();
-#endif
-
-	// Clear any memory of previously packed rectangles.
-	usedRectangles.clear();
-
-	// We start with a single big free rectangle that spans the whole bin.
-	Rect n;
-	n.x = 0;
-	n.y = 0;
-	n.width = width;
-	n.height = height;
-
-	freeRectangles.clear();
-	freeRectangles.push_back(n);
-}
-
-void GuillotineBinPack::Insert(std::vector<RectSize> &rects, bool merge, 
-	FreeRectChoiceHeuristic rectChoice, GuillotineSplitHeuristic splitMethod)
-{
-	// Remember variables about the best packing choice we have made so far during the iteration process.
-	int bestFreeRect = 0;
-	int bestRect = 0;
-	bool bestFlipped = false;
-
-	// Pack rectangles one at a time until we have cleared the rects array of all rectangles.
-	// rects will get destroyed in the process.
-	while(rects.size() > 0)
-	{
-		// Stores the penalty score of the best rectangle placement - bigger=worse, smaller=better.
-		int bestScore = std::numeric_limits<int>::max();
-
-		for(size_t i = 0; i < freeRectangles.size(); ++i)
-		{
-			for(size_t j = 0; j < rects.size(); ++j)
-			{
-				// If this rectangle is a perfect match, we pick it instantly.
-				if (rects[j].width == freeRectangles[i].width && rects[j].height == freeRectangles[i].height)
-				{
-					bestFreeRect = i;
-					bestRect = j;
-					bestFlipped = false;
-					bestScore = std::numeric_limits<int>::min();
-					i = freeRectangles.size(); // Force a jump out of the outer loop as well - we got an instant fit.
-					break;
-				}
-				// If flipping this rectangle is a perfect match, pick that then.
-				/*else if (rects[j].height == freeRectangles[i].width && rects[j].width == freeRectangles[i].height)
-				{
-					bestFreeRect = i;
-					bestRect = j;
-					bestFlipped = true;
-					bestScore = std::numeric_limits<int>::min();
-					i = freeRectangles.size(); // Force a jump out of the outer loop as well - we got an instant fit.
-					break;
-				}*/
-				// Try if we can fit the rectangle upright.
-				else if (rects[j].width <= freeRectangles[i].width && rects[j].height <= freeRectangles[i].height)
-				{
-					int score = ScoreByHeuristic(rects[j].width, rects[j].height, freeRectangles[i], rectChoice);
-					if (score < bestScore)
-					{
-						bestFreeRect = i;
-						bestRect = j;
-						bestFlipped = false;
-						bestScore = score;
-					}
-				}
-				// If not, then perhaps flipping sideways will make it fit?
-				/*else if (rects[j].height <= freeRectangles[i].width && rects[j].width <= freeRectangles[i].height)
-				{
-					int score = ScoreByHeuristic(rects[j].height, rects[j].width, freeRectangles[i], rectChoice);
-					if (score < bestScore)
-					{
-						bestFreeRect = i;
-						bestRect = j;
-						bestFlipped = true;
-						bestScore = score;
-					}
-				}*/
-			}
-		}
-
-		// If we didn't manage to find any rectangle to pack, abort.
-		if (bestScore == std::numeric_limits<int>::max())
-			return;
-
-		// Otherwise, we're good to go and do the actual packing.
-		Rect newNode;
-		newNode.x = freeRectangles[bestFreeRect].x;
-		newNode.y = freeRectangles[bestFreeRect].y;
-		newNode.width = rects[bestRect].width;
-		newNode.height = rects[bestRect].height;
-
-		if (bestFlipped)
-			std::swap(newNode.width, newNode.height);
-
-		// Remove the free space we lost in the bin.
-		SplitFreeRectByHeuristic(freeRectangles[bestFreeRect], newNode, splitMethod);
-		freeRectangles.erase(freeRectangles.begin() + bestFreeRect);
-
-		// Remove the rectangle we just packed from the input list.
-		rects.erase(rects.begin() + bestRect);
-
-		// Perform a Rectangle Merge step if desired.
-		if (merge)
-			MergeFreeList();
-
-		// Remember the new used rectangle.
-		usedRectangles.push_back(newNode);
-
-		// Check that we're really producing correct packings here.
-		debug_assert(disjointRects.Add(newNode) == true);
-	}
-}
-
-/// @return True if r fits inside freeRect (possibly rotated).
-bool Fits(const RectSize &r, const Rect &freeRect)
-{
-	return (r.width <= freeRect.width && r.height <= freeRect.height) ||
-		(r.height <= freeRect.width && r.width <= freeRect.height);
-}
-
-/// @return True if r fits perfectly inside freeRect, i.e. the leftover area is 0.
-bool FitsPerfectly(const RectSize &r, const Rect &freeRect)
-{
-	return (r.width == freeRect.width && r.height == freeRect.height) ||
-		(r.height == freeRect.width && r.width == freeRect.height);
-}
-
-/*
-// A helper function for GUILLOTINE-MAXFITTING. Counts how many rectangles fit into the given rectangle
-// after it has been split.
-void CountNumFitting(const Rect &freeRect, int width, int height, const std::vector<RectSize> &rects, 
-	int usedRectIndex, bool splitHorizontal, int &score1, int &score2)
-{
-	const int w = freeRect.width - width;
-	const int h = freeRect.height - height;
-
-	Rect bottom;
-	bottom.x = freeRect.x;
-	bottom.y = freeRect.y + height;
-	bottom.height = h;
-
-	Rect right;
-	right.x = freeRect.x + width;
-	right.y = freeRect.y;
-	right.width = w;
-
-	if (splitHorizontal)
-	{
-		bottom.width = freeRect.width;
-		right.height = height;
-	}
-	else // Split vertically
-	{
-		bottom.width = width;
-		right.height = freeRect.height;
-	}
-
-	int fitBottom = 0;
-	int fitRight = 0;
-	for(size_t i = 0; i < rects.size(); ++i)
-		if (i != usedRectIndex)
-		{
-			if (FitsPerfectly(rects[i], bottom))
-				fitBottom |= 0x10000000;
-			if (FitsPerfectly(rects[i], right))
-				fitRight |= 0x10000000;
-
-			if (Fits(rects[i], bottom))
-				++fitBottom;
-			if (Fits(rects[i], right))
-				++fitRight;
-		}
-
-	score1 = min(fitBottom, fitRight);
-	score2 = max(fitBottom, fitRight);
-}
-*/
-/*
-// Implements GUILLOTINE-MAXFITTING, an experimental heuristic that's really cool but didn't quite work in practice.
-void GuillotineBinPack::InsertMaxFitting(std::vector<RectSize> &rects, std::vector<Rect> &dst, bool merge, 
-	FreeRectChoiceHeuristic rectChoice, GuillotineSplitHeuristic splitMethod)
-{
-	dst.clear();
-	int bestRect = 0;
-	bool bestFlipped = false;
-	bool bestSplitHorizontal = false;
-
-	// Pick rectangles one at a time and pack the one that leaves the most choices still open.
-	while(rects.size() > 0 && freeRectangles.size() > 0)
-	{
-		int bestScore1 = -1;
-		int bestScore2 = -1;
-
-		///\todo Different sort predicates.
-		clb::sort::QuickSort(&freeRectangles[0], freeRectangles.size(), CompareRectShortSide);
-
-		Rect &freeRect = freeRectangles[0];
-
-		for(size_t j = 0; j < rects.size(); ++j)
-		{
-			int score1;
-			int score2;
-
-			if (rects[j].width == freeRect.width && rects[j].height == freeRect.height)
-			{
-				bestRect = j;
-				bestFlipped = false;
-				bestScore1 = bestScore2 = std::numeric_limits<int>::max();
-				break;
-			}
-			else if (rects[j].width <= freeRect.width && rects[j].height <= freeRect.height)
-			{
-				CountNumFitting(freeRect, rects[j].width, rects[j].height, rects, j, false, score1, score2);
-
-				if (score1 > bestScore1 || (score1 == bestScore1 && score2 > bestScore2))
-				{
-					bestRect = j;
-					bestScore1 = score1;
-					bestScore2 = score2;
-					bestFlipped = false;
-					bestSplitHorizontal = false;
-				}
-
-				CountNumFitting(freeRect, rects[j].width, rects[j].height, rects, j, true, score1, score2);
-
-				if (score1 > bestScore1 || (score1 == bestScore1 && score2 > bestScore2))
-				{
-					bestRect = j;
-					bestScore1 = score1;
-					bestScore2 = score2;
-					bestFlipped = false;
-					bestSplitHorizontal = true;
-				}
-			}
-
-			if (rects[j].height == freeRect.width && rects[j].width == freeRect.height)
-			{
-				bestRect = j;
-				bestFlipped = true;
-				bestScore1 = bestScore2 = std::numeric_limits<int>::max();
-				break;
-			}
-			else if (rects[j].height <= freeRect.width && rects[j].width <= freeRect.height)
-			{
-				CountNumFitting(freeRect, rects[j].height, rects[j].width, rects, j, false, score1, score2);
-
-				if (score1 > bestScore1 || (score1 == bestScore1 && score2 > bestScore2))
-				{
-					bestRect = j;
-					bestScore1 = score1;
-					bestScore2 = score2;
-					bestFlipped = true;
-					bestSplitHorizontal = false;
-				}
-
-				CountNumFitting(freeRect, rects[j].height, rects[j].width, rects, j, true, score1, score2);
-
-				if (score1 > bestScore1 || (score1 == bestScore1 && score2 > bestScore2))
-				{
-					bestRect = j;
-					bestScore1 = score1;
-					bestScore2 = score2;
-					bestFlipped = true;
-					bestSplitHorizontal = true;
-				}
-			}
-		}
-
-		if (bestScore1 >= 0)
-		{
-			Rect newNode;
-			newNode.x = freeRect.x;
-			newNode.y = freeRect.y;
-			newNode.width = rects[bestRect].width;
-			newNode.height = rects[bestRect].height;
-			if (bestFlipped)
-				std::swap(newNode.width, newNode.height);
-
-			assert(disjointRects.Disjoint(newNode));
-			SplitFreeRectAlongAxis(freeRect, newNode, bestSplitHorizontal);
-
-			rects.erase(rects.begin() + bestRect);
-
-			if (merge)
-				MergeFreeList();
-
-			usedRectangles.push_back(newNode);
-#ifdef _DEBUG
-			disjointRects.Add(newNode);
-#endif
-		}
-
-		freeRectangles.erase(freeRectangles.begin());
-	}
-}
-*/
-
-Rect GuillotineBinPack::Insert(int width, int height, bool merge, FreeRectChoiceHeuristic rectChoice, 
-	GuillotineSplitHeuristic splitMethod)
-{
-	// Find where to put the new rectangle.
-	int freeNodeIndex = 0;
-	Rect newRect = FindPositionForNewNode(width, height, rectChoice, &freeNodeIndex);
-
-	// Abort if we didn't have enough space in the bin.
-	if (newRect.height == 0)
-		return newRect;
-
-	// Remove the space that was just consumed by the new rectangle.
-	SplitFreeRectByHeuristic(freeRectangles[freeNodeIndex], newRect, splitMethod);
-	freeRectangles.erase(freeRectangles.begin() + freeNodeIndex);
-
-	// Perform a Rectangle Merge step if desired.
-	if (merge)
-		MergeFreeList();
-
-	// Remember the new used rectangle.
-	usedRectangles.push_back(newRect);
-
-	// Check that we're really producing correct packings here.
-	debug_assert(disjointRects.Add(newRect) == true);
-
-	return newRect;
-}
-
-/// Computes the ratio of used surface area to the total bin area.
-float GuillotineBinPack::Occupancy() const
-{
-	///\todo The occupancy rate could be cached/tracked incrementally instead
-	///      of looping through the list of packed rectangles here.
-	unsigned long usedSurfaceArea = 0;
-	for(size_t i = 0; i < usedRectangles.size(); ++i)
-		usedSurfaceArea += usedRectangles[i].width * usedRectangles[i].height;
-
-	return (float)usedSurfaceArea / (binWidth * binHeight);
-}
-
-/// Returns the heuristic score value for placing a rectangle of size width*height into freeRect. Does not try to rotate.
-int GuillotineBinPack::ScoreByHeuristic(int width, int height, const Rect &freeRect, FreeRectChoiceHeuristic rectChoice)
-{
-	switch(rectChoice)
-	{
-	case RectBestAreaFit: return ScoreBestAreaFit(width, height, freeRect);
-	case RectBestShortSideFit: return ScoreBestShortSideFit(width, height, freeRect);
-	case RectBestLongSideFit: return ScoreBestLongSideFit(width, height, freeRect);
-	case RectWorstAreaFit: return ScoreWorstAreaFit(width, height, freeRect);
-	case RectWorstShortSideFit: return ScoreWorstShortSideFit(width, height, freeRect);
-	case RectWorstLongSideFit: return ScoreWorstLongSideFit(width, height, freeRect);
-	default: assert(false); return std::numeric_limits<int>::max();
-	}
-}
-
-int GuillotineBinPack::ScoreBestAreaFit(int width, int height, const Rect &freeRect)
-{
-	return freeRect.width * freeRect.height - width * height;
-}
-
-int GuillotineBinPack::ScoreBestShortSideFit(int width, int height, const Rect &freeRect)
-{
-	int leftoverHoriz = abs(freeRect.width - width);
-	int leftoverVert = abs(freeRect.height - height);
-	int leftover = min(leftoverHoriz, leftoverVert);
-	return leftover;
-}
-
-int GuillotineBinPack::ScoreBestLongSideFit(int width, int height, const Rect &freeRect)
-{
-	int leftoverHoriz = abs(freeRect.width - width);
-	int leftoverVert = abs(freeRect.height - height);
-	int leftover = max(leftoverHoriz, leftoverVert);
-	return leftover;
-}
-
-int GuillotineBinPack::ScoreWorstAreaFit(int width, int height, const Rect &freeRect)
-{
-	return -ScoreBestAreaFit(width, height, freeRect);
-}
-
-int GuillotineBinPack::ScoreWorstShortSideFit(int width, int height, const Rect &freeRect)
-{
-	return -ScoreBestShortSideFit(width, height, freeRect);
-}
-
-int GuillotineBinPack::ScoreWorstLongSideFit(int width, int height, const Rect &freeRect)
-{
-	return -ScoreBestLongSideFit(width, height, freeRect);
-}
-
-Rect GuillotineBinPack::FindPositionForNewNode(int width, int height, FreeRectChoiceHeuristic rectChoice, int *nodeIndex)
-{
-	Rect bestNode;
-	memset(&bestNode, 0, sizeof(Rect));
-
-	int bestScore = std::numeric_limits<int>::max();
-
-	/// Try each free rectangle to find the best one for placement.
-	for(size_t i = 0; i < freeRectangles.size(); ++i)
-	{
-		// If this is a perfect fit upright, choose it immediately.
-		if (width == freeRectangles[i].width && height == freeRectangles[i].height)
-		{
-			bestNode.x = freeRectangles[i].x;
-			bestNode.y = freeRectangles[i].y;
-			bestNode.width = width;
-			bestNode.height = height;
-			bestScore = std::numeric_limits<int>::min();
-			*nodeIndex = i;
-			debug_assert(disjointRects.Disjoint(bestNode));
-			break;
-		}
-		// If this is a perfect fit sideways, choose it.
-		else if (height == freeRectangles[i].width && width == freeRectangles[i].height)
-		{
-			bestNode.x = freeRectangles[i].x;
-			bestNode.y = freeRectangles[i].y;
-			bestNode.width = height;
-			bestNode.height = width;
-			bestScore = std::numeric_limits<int>::min();
-			*nodeIndex = i;
-			debug_assert(disjointRects.Disjoint(bestNode));
-			break;
-		}
-		// Does the rectangle fit upright?
-		else if (width <= freeRectangles[i].width && height <= freeRectangles[i].height)
-		{
-			int score = ScoreByHeuristic(width, height, freeRectangles[i], rectChoice);
-
-			if (score < bestScore)
-			{
-				bestNode.x = freeRectangles[i].x;
-				bestNode.y = freeRectangles[i].y;
-				bestNode.width = width;
-				bestNode.height = height;
-				bestScore = score;
-				*nodeIndex = i;
-				debug_assert(disjointRects.Disjoint(bestNode));
-			}
-		}
-		// Does the rectangle fit sideways?
-		else if (height <= freeRectangles[i].width && width <= freeRectangles[i].height)
-		{
-			int score = ScoreByHeuristic(height, width, freeRectangles[i], rectChoice);
-
-			if (score < bestScore)
-			{
-				bestNode.x = freeRectangles[i].x;
-				bestNode.y = freeRectangles[i].y;
-				bestNode.width = height;
-				bestNode.height = width;
-				bestScore = score;
-				*nodeIndex = i;
-				debug_assert(disjointRects.Disjoint(bestNode));
-			}
-		}
-	}
-	return bestNode;
-}
-
-void GuillotineBinPack::SplitFreeRectByHeuristic(const Rect &freeRect, const Rect &placedRect, GuillotineSplitHeuristic method)
-{
-	// Compute the lengths of the leftover area.
-	const int w = freeRect.width - placedRect.width;
-	const int h = freeRect.height - placedRect.height;
-
-	// Placing placedRect into freeRect results in an L-shaped free area, which must be split into
-	// two disjoint rectangles. This can be achieved with by splitting the L-shape using a single line.
-	// We have two choices: horizontal or vertical.	
-
-	// Use the given heuristic to decide which choice to make.
-
-	bool splitHorizontal;
-	switch(method)
-	{
-	case SplitShorterLeftoverAxis:
-		// Split along the shorter leftover axis.
-		splitHorizontal = (w <= h);
-		break;
-	case SplitLongerLeftoverAxis:
-		// Split along the longer leftover axis.
-		splitHorizontal = (w > h);
-		break;
-	case SplitMinimizeArea:
-		// Maximize the larger area == minimize the smaller area.
-		// Tries to make the single bigger rectangle.
-		splitHorizontal = (placedRect.width * h > w * placedRect.height);
-		break;
-	case SplitMaximizeArea:
-		// Maximize the smaller area == minimize the larger area.
-		// Tries to make the rectangles more even-sized.
-		splitHorizontal = (placedRect.width * h <= w * placedRect.height);
-		break;
-	case SplitShorterAxis:
-		// Split along the shorter total axis.
-		splitHorizontal = (freeRect.width <= freeRect.height);
-		break;
-	case SplitLongerAxis:
-		// Split along the longer total axis.
-		splitHorizontal = (freeRect.width > freeRect.height);
-		break;
-	default:
-		splitHorizontal = true;
-		assert(false);
-	}
-
-	// Perform the actual split.
-	SplitFreeRectAlongAxis(freeRect, placedRect, splitHorizontal);
-}
-
-/// This function will add the two generated rectangles into the freeRectangles array. The caller is expected to
-/// remove the original rectangle from the freeRectangles array after that.
-void GuillotineBinPack::SplitFreeRectAlongAxis(const Rect &freeRect, const Rect &placedRect, bool splitHorizontal)
-{
-	// Form the two new rectangles.
-	Rect bottom;
-	bottom.x = freeRect.x;
-	bottom.y = freeRect.y + placedRect.height;
-	bottom.height = freeRect.height - placedRect.height;
-
-	Rect right;
-	right.x = freeRect.x + placedRect.width;
-	right.y = freeRect.y;
-	right.width = freeRect.width - placedRect.width;
-
-	if (splitHorizontal)
-	{
-		bottom.width = freeRect.width;
-		right.height = placedRect.height;
-	}
-	else // Split vertically
-	{
-		bottom.width = placedRect.width;
-		right.height = freeRect.height;
-	}
-
-	// Add the new rectangles into the free rectangle pool if they weren't degenerate.
-	if (bottom.width > 0 && bottom.height > 0)
-		freeRectangles.push_back(bottom);
-	if (right.width > 0 && right.height > 0)
-		freeRectangles.push_back(right);
-
-	debug_assert(disjointRects.Disjoint(bottom));
-	debug_assert(disjointRects.Disjoint(right));
-}
-
-void GuillotineBinPack::MergeFreeList()
-{
-#ifdef _DEBUG
-	DisjointRectCollection test;
-	for(size_t i = 0; i < freeRectangles.size(); ++i)
-		assert(test.Add(freeRectangles[i]) == true);
-#endif
-
-	// Do a Theta(n^2) loop to see if any pair of free rectangles could me merged into one.
-	// Note that we miss any opportunities to merge three rectangles into one. (should call this function again to detect that)
-	for(size_t i = 0; i < freeRectangles.size(); ++i)
-		for(size_t j = i+1; j < freeRectangles.size(); ++j)
-		{
-			if (freeRectangles[i].width == freeRectangles[j].width && freeRectangles[i].x == freeRectangles[j].x)
-			{
-				if (freeRectangles[i].y == freeRectangles[j].y + freeRectangles[j].height)
-				{
-					freeRectangles[i].y -= freeRectangles[j].height;
-					freeRectangles[i].height += freeRectangles[j].height;
-					freeRectangles.erase(freeRectangles.begin() + j);
-					--j;
-				}
-				else if (freeRectangles[i].y + freeRectangles[i].height == freeRectangles[j].y)
-				{
-					freeRectangles[i].height += freeRectangles[j].height;
-					freeRectangles.erase(freeRectangles.begin() + j);
-					--j;
-				}
-			}
-			else if (freeRectangles[i].height == freeRectangles[j].height && freeRectangles[i].y == freeRectangles[j].y)
-			{
-				if (freeRectangles[i].x == freeRectangles[j].x + freeRectangles[j].width)
-				{
-					freeRectangles[i].x -= freeRectangles[j].width;
-					freeRectangles[i].width += freeRectangles[j].width;
-					freeRectangles.erase(freeRectangles.begin() + j);
-					--j;
-				}
-				else if (freeRectangles[i].x + freeRectangles[i].width == freeRectangles[j].x)
-				{
-					freeRectangles[i].width += freeRectangles[j].width;
-					freeRectangles.erase(freeRectangles.begin() + j);
-					--j;
-				}
-			}
-		}
-
-#ifdef _DEBUG
-	test.Clear();
-	for(size_t i = 0; i < freeRectangles.size(); ++i)
-		assert(test.Add(freeRectangles[i]) == true);
-#endif
-}
-
-}
@@ -1,134 +0,0 @@
-/** @file GuillotineBinPack.h
-	@author Jukka Jylänki
-
-	@brief Implements different bin packer algorithms that use the GUILLOTINE data structure.
-
-	This work is released to Public Domain, do whatever you want with it.
-*/
-#pragma once
-
-#include <vector>
-
-#include "Rect.h"
-
-namespace rbp {
-
-/** GuillotineBinPack implements different variants of bin packer algorithms that use the GUILLOTINE data structure
-	to keep track of the free space of the bin where rectangles may be placed. */
-class GuillotineBinPack
-{
-public:
-	/// The initial bin size will be (0,0). Call Init to set the bin size.
-	GuillotineBinPack();
-
-	/// Initializes a new bin of the given size.
-	GuillotineBinPack(int width, int height);
-
-	/// (Re)initializes the packer to an empty bin of width x height units. Call whenever
-	/// you need to restart with a new bin.
-	void Init(int width, int height);
-
-	/// Specifies the different choice heuristics that can be used when deciding which of the free subrectangles
-	/// to place the to-be-packed rectangle into.
-	enum FreeRectChoiceHeuristic
-	{
-		RectBestAreaFit, ///< -BAF
-		RectBestShortSideFit, ///< -BSSF
-		RectBestLongSideFit, ///< -BLSF
-		RectWorstAreaFit, ///< -WAF
-		RectWorstShortSideFit, ///< -WSSF
-		RectWorstLongSideFit ///< -WLSF
-	};
-
-	/// Specifies the different choice heuristics that can be used when the packer needs to decide whether to
-	/// subdivide the remaining free space in horizontal or vertical direction.
-	enum GuillotineSplitHeuristic
-	{
-		SplitShorterLeftoverAxis, ///< -SLAS
-		SplitLongerLeftoverAxis, ///< -LLAS
-		SplitMinimizeArea, ///< -MINAS, Try to make a single big rectangle at the expense of making the other small.
-		SplitMaximizeArea, ///< -MAXAS, Try to make both remaining rectangles as even-sized as possible.
-		SplitShorterAxis, ///< -SAS
-		SplitLongerAxis ///< -LAS
-	};
-
-	/// Inserts a single rectangle into the bin. The packer might rotate the rectangle, in which case the returned
-	/// struct will have the width and height values swapped.
-	/// @param merge If true, performs free Rectangle Merge procedure after packing the new rectangle. This procedure
-	///		tries to defragment the list of disjoint free rectangles to improve packing performance, but also takes up 
-	///		some extra time.
-	/// @param rectChoice The free rectangle choice heuristic rule to use.
-	/// @param splitMethod The free rectangle split heuristic rule to use.
-	Rect Insert(int width, int height, bool merge, FreeRectChoiceHeuristic rectChoice, GuillotineSplitHeuristic splitMethod);
-
-	/// Inserts a list of rectangles into the bin.
-	/// @param rects The list of rectangles to add. This list will be destroyed in the packing process.
-	/// @param merge If true, performs Rectangle Merge operations during the packing process.
-	/// @param rectChoice The free rectangle choice heuristic rule to use.
-	/// @param splitMethod The free rectangle split heuristic rule to use.
-	void Insert(std::vector<RectSize> &rects, bool merge, 
-		FreeRectChoiceHeuristic rectChoice, GuillotineSplitHeuristic splitMethod);
-
-// Implements GUILLOTINE-MAXFITTING, an experimental heuristic that's really cool but didn't quite work in practice.
-//	void InsertMaxFitting(std::vector<RectSize> &rects, std::vector<Rect> &dst, bool merge, 
-//		FreeRectChoiceHeuristic rectChoice, GuillotineSplitHeuristic splitMethod);
-
-	/// Computes the ratio of used/total surface area. 0.00 means no space is yet used, 1.00 means the whole bin is used.
-	float Occupancy() const;
-
-	/// Returns the internal list of disjoint rectangles that track the free area of the bin. You may alter this vector
-	/// any way desired, as long as the end result still is a list of disjoint rectangles.
-	std::vector<Rect> &GetFreeRectangles() { return freeRectangles; }
-
-	/// Returns the list of packed rectangles. You may alter this vector at will, for example, you can move a Rect from
-	/// this list to the Free Rectangles list to free up space on-the-fly, but notice that this causes fragmentation.
-	std::vector<Rect> &GetUsedRectangles() { return usedRectangles; }
-
-	/// Performs a Rectangle Merge operation. This procedure looks for adjacent free rectangles and merges them if they
-	/// can be represented with a single rectangle. Takes up Theta(|freeRectangles|^2) time.
-	void MergeFreeList();
-
-private:
-	int binWidth;
-	int binHeight;
-
-	/// Stores a list of all the rectangles that we have packed so far. This is used only to compute the Occupancy ratio,
-	/// so if you want to have the packer consume less memory, this can be removed.
-	std::vector<Rect> usedRectangles;
-
-	/// Stores a list of rectangles that represents the free area of the bin. This rectangles in this list are disjoint.
-	std::vector<Rect> freeRectangles;
-
-#ifdef _DEBUG
-	/// Used to track that the packer produces proper packings.
-	DisjointRectCollection disjointRects;
-#endif
-
-	/// Goes through the list of free rectangles and finds the best one to place a rectangle of given size into.
-	/// Running time is Theta(|freeRectangles|).
-	/// @param nodeIndex [out] The index of the free rectangle in the freeRectangles array into which the new
-	///		rect was placed.
-	/// @return A Rect structure that represents the placement of the new rect into the best free rectangle.
-	Rect FindPositionForNewNode(int width, int height, FreeRectChoiceHeuristic rectChoice, int *nodeIndex);
-
-	static int ScoreByHeuristic(int width, int height, const Rect &freeRect, FreeRectChoiceHeuristic rectChoice);
-	// The following functions compute (penalty) score values if a rect of the given size was placed into the 
-	// given free rectangle. In these score values, smaller is better.
-
-	static int ScoreBestAreaFit(int width, int height, const Rect &freeRect);
-	static int ScoreBestShortSideFit(int width, int height, const Rect &freeRect);
-	static int ScoreBestLongSideFit(int width, int height, const Rect &freeRect);
-
-	static int ScoreWorstAreaFit(int width, int height, const Rect &freeRect);
-	static int ScoreWorstShortSideFit(int width, int height, const Rect &freeRect);
-	static int ScoreWorstLongSideFit(int width, int height, const Rect &freeRect);
-
-	/// Splits the given L-shaped free rectangle into two new free rectangles after placedRect has been placed into it.
-	/// Determines the split axis by using the given heuristic.
-	void SplitFreeRectByHeuristic(const Rect &freeRect, const Rect &placedRect, GuillotineSplitHeuristic method);
-
-	/// Splits the given L-shaped free rectangle into two new free rectangles along the given fixed split axis.
-	void SplitFreeRectAlongAxis(const Rect &freeRect, const Rect &placedRect, bool splitHorizontal);
-};
-
-}
@@ -1,51 +0,0 @@
-/** @file Rect.cpp
-	@author Jukka Jylänki
-
-	This work is released to Public Domain, do whatever you want with it.
-*/
-#include <utility>
-
-#include "Rect.h"
-
-namespace rbp {
-
-/*
-#include "clb/Algorithm/Sort.h"
-
-int CompareRectShortSide(const Rect &a, const Rect &b)
-{
-	using namespace std;
-
-	int smallerSideA = min(a.width, a.height);
-	int smallerSideB = min(b.width, b.height);
-
-	if (smallerSideA != smallerSideB)
-		return clb::sort::TriCmp(smallerSideA, smallerSideB);
-
-	// Tie-break on the larger side.
-	int largerSideA = max(a.width, a.height);
-	int largerSideB = max(b.width, b.height);
-
-	return clb::sort::TriCmp(largerSideA, largerSideB);
-}
-*/
-/*
-int NodeSortCmp(const Rect &a, const Rect &b)
-{
-	if (a.x != b.x)
-		return clb::sort::TriCmp(a.x, b.x);
-	if (a.y != b.y)
-		return clb::sort::TriCmp(a.y, b.y);
-	if (a.width != b.width)
-		return clb::sort::TriCmp(a.width, b.width);
-	return clb::sort::TriCmp(a.height, b.height);
-}
-*/
-bool IsContainedIn(const Rect &a, const Rect &b)
-{
-	return a.x >= b.x && a.y >= b.y 
-		&& a.x+a.width <= b.x+b.width 
-		&& a.y+a.height <= b.y+b.height;
-}
-
-}
@@ -1,94 +0,0 @@
-/** @file Rect.h
-	@author Jukka Jylänki
-
-	This work is released to Public Domain, do whatever you want with it.
-*/
-#pragma once
-
-#include <vector>
-#include <cassert>
-#include <cstdlib>
-
-#ifdef _DEBUG
-/// debug_assert is an assert that also requires debug mode to be defined.
-#define debug_assert(x) assert(x)
-#else
-#define debug_assert(x)
-#endif
-
-//using namespace std;
-
-namespace rbp {
-
-struct RectSize
-{
-	int width;
-	int height;
-};
-
-struct Rect
-{
-	int x;
-	int y;
-	int width;
-	int height;
-};
-
-/// Performs a lexicographic compare on (rect short side, rect long side).
-/// @return -1 if the smaller side of a is shorter than the smaller side of b, 1 if the other way around.
-///   If they are equal, the larger side length is used as a tie-breaker.
-///   If the rectangles are of same size, returns 0.
-int CompareRectShortSide(const Rect &a, const Rect &b);
-
-/// Performs a lexicographic compare on (x, y, width, height).
-int NodeSortCmp(const Rect &a, const Rect &b);
-
-/// Returns true if a is contained in b.
-bool IsContainedIn(const Rect &a, const Rect &b);
-
-class DisjointRectCollection
-{
-public:
-	std::vector<Rect> rects;
-
-	bool Add(const Rect &r)
-	{
-		// Degenerate rectangles are ignored.
-		if (r.width == 0 || r.height == 0)
-			return true;
-
-		if (!Disjoint(r))
-			return false;
-		rects.push_back(r);
-		return true;
-	}
-
-	void Clear()
-	{
-		rects.clear();
-	}
-
-	bool Disjoint(const Rect &r) const
-	{
-		// Degenerate rectangles are ignored.
-		if (r.width == 0 || r.height == 0)
-			return true;
-
-		for(size_t i = 0; i < rects.size(); ++i)
-			if (!Disjoint(rects[i], r))
-				return false;
-		return true;
-	}
-
-	static bool Disjoint(const Rect &a, const Rect &b)
-	{
-		if (a.x + a.width <= b.x ||
-			b.x + b.width <= a.x ||
-			a.y + a.height <= b.y ||
-			b.y + b.height <= a.y)
-			return true;
-		return false;
-	}
-};
-
-}
@@ -1,446 +0,0 @@
-#ifndef RAPIDXML_PRINT_HPP_INCLUDED
-#define RAPIDXML_PRINT_HPP_INCLUDED
-
-// Copyright (C) 2006, 2009 Marcin Kalicinski
-// Version 1.13
-// Revision $DateTime: 2009/05/13 01:46:17 $
-//! \file rapidxml_print.hpp This file contains rapidxml printer implementation
-
-#include "rapidxml.hpp"
-
-// Only include streams if not disabled
-#ifndef RAPIDXML_NO_STREAMS
-    #include <ostream>
-    #include <iterator>
-#endif
-
-namespace rapidxml
-{
-
-    ///////////////////////////////////////////////////////////////////////
-    // Printing flags
-
-    const int print_no_indenting = 0x1;   //!< Printer flag instructing the printer to suppress indenting of XML. See print() function.
-
-    ///////////////////////////////////////////////////////////////////////
-    // Internal
-
-    //! \cond internal
-    namespace internal
-    {
-
-        ///////////////////////////////////////////////////////////////////////////
-        // Internal character operations
-
-        // Copy characters from given range to given output iterator
-        template<class OutIt, class Ch>
-        inline OutIt copy_chars(const Ch *begin, const Ch *end, OutIt out)
-        {
-            while (begin != end)
-                *out++ = *begin++;
-            return out;
-        }
-
-        // Copy characters from given range to given output iterator and expand
-        // characters into references (&lt; &gt; &apos; &quot; &amp;)
-        template<class OutIt, class Ch>
-        inline OutIt copy_and_expand_chars(const Ch *begin, const Ch *end, Ch noexpand, OutIt out)
-        {
-            while (begin != end)
-            {
-                if (*begin == noexpand)
-                {
-                    *out++ = *begin;    // No expansion, copy character
-                }
-                else
-                {
-                    switch (*begin)
-                    {
-                    case Ch('<'):
-                        *out++ = Ch('&'); *out++ = Ch('l'); *out++ = Ch('t'); *out++ = Ch(';');
-                        break;
-                    case Ch('>'):
-                        *out++ = Ch('&'); *out++ = Ch('g'); *out++ = Ch('t'); *out++ = Ch(';');
-                        break;
-                    case Ch('\''):
-                        *out++ = Ch('&'); *out++ = Ch('a'); *out++ = Ch('p'); *out++ = Ch('o'); *out++ = Ch('s'); *out++ = Ch(';');
-                        break;
-                    case Ch('"'):
-                        *out++ = Ch('&'); *out++ = Ch('q'); *out++ = Ch('u'); *out++ = Ch('o'); *out++ = Ch('t'); *out++ = Ch(';');
-                        break;
-                    case Ch('&'):
-                        *out++ = Ch('&'); *out++ = Ch('a'); *out++ = Ch('m'); *out++ = Ch('p'); *out++ = Ch(';');
-                        break;
-                    default:
-                        *out++ = *begin;    // No expansion, copy character
-                    }
-                }
-                ++begin;    // Step to next character
-            }
-            return out;
-        }
-
-        // Fill given output iterator with repetitions of the same character
-        template<class OutIt, class Ch>
-        inline OutIt fill_chars(OutIt out, int n, Ch ch)
-        {
-            for (int i = 0; i < n; ++i)
-                *out++ = ch;
-            return out;
-        }
-
-        // Find character
-        template<class Ch, Ch ch>
-        inline bool find_char(const Ch *begin, const Ch *end)
-        {
-            while (begin != end)
-                if (*begin++ == ch)
-                    return true;
-            return false;
-        }
-
-        ///////////////////////////////////////////////////////////////////////////
-        // Internal printing operations
-template<class OutIt, class Ch>
-inline OutIt print_children(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_attributes(OutIt out, const xml_node<Ch> *node, int flags);
-
-template<class OutIt, class Ch>
-inline OutIt print_data_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_cdata_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_element_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_declaration_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_comment_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_doctype_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-
-template<class OutIt, class Ch>
-inline OutIt print_pi_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
-        // Print node
-        template<class OutIt, class Ch>
-        inline OutIt print_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            // Print proper node type
-            switch (node->type())
-            {
-
-            // Document
-            case node_document:
-                out = print_children(out, node, flags, indent);
-                break;
-
-            // Element
-            case node_element:
-                out = print_element_node(out, node, flags, indent);
-                break;
-
-            // Data
-            case node_data:
-                out = print_data_node(out, node, flags, indent);
-                break;
-
-            // CDATA
-            case node_cdata:
-                out = print_cdata_node(out, node, flags, indent);
-                break;
-
-            // Declaration
-            case node_declaration:
-                out = print_declaration_node(out, node, flags, indent);
-                break;
-
-            // Comment
-            case node_comment:
-                out = print_comment_node(out, node, flags, indent);
-                break;
-
-            // Doctype
-            case node_doctype:
-                out = print_doctype_node(out, node, flags, indent);
-                break;
-
-            // Pi
-            case node_pi:
-                out = print_pi_node(out, node, flags, indent);
-                break;
-
-                // Unknown
-            default:
-                assert(0);
-                break;
-            }
-
-            // If indenting not disabled, add line break after node
-            if (!(flags & print_no_indenting))
-                *out = Ch('\n'), ++out;
-
-            // Return modified iterator
-            return out;
-        }
-
-        // Print children of the node
-        template<class OutIt, class Ch>
-        inline OutIt print_children(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            for (xml_node<Ch> *child = node->first_node(); child; child = child->next_sibling())
-                out = print_node(out, child, flags, indent);
-            return out;
-        }
-
-        // Print attributes of the node
-        template<class OutIt, class Ch>
-        inline OutIt print_attributes(OutIt out, const xml_node<Ch> *node, int flags)
-        {
-            for (xml_attribute<Ch> *attribute = node->first_attribute(); attribute; attribute = attribute->next_attribute())
-            {
-                if (attribute->name() && attribute->value())
-                {
-                    // Print attribute name
-                    *out = Ch(' '), ++out;
-                    out = copy_chars(attribute->name(), attribute->name() + attribute->name_size(), out);
-                    *out = Ch('='), ++out;
-                    // Print attribute value using appropriate quote type
-                    if (find_char<Ch, Ch('"')>(attribute->value(), attribute->value() + attribute->value_size()))
-                    {
-                        *out = Ch('\''), ++out;
-                        out = copy_and_expand_chars(attribute->value(), attribute->value() + attribute->value_size(), Ch('"'), out);
-                        *out = Ch('\''), ++out;
-                    }
-                    else
-                    {
-                        *out = Ch('"'), ++out;
-                        out = copy_and_expand_chars(attribute->value(), attribute->value() + attribute->value_size(), Ch('\''), out);
-                        *out = Ch('"'), ++out;
-                    }
-                }
-            }
-            return out;
-        }
-
-        // Print data node
-        template<class OutIt, class Ch>
-        inline OutIt print_data_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            assert(node->type() == node_data);
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            out = copy_and_expand_chars(node->value(), node->value() + node->value_size(), Ch(0), out);
-            return out;
-        }
-
-        // Print data node
-        template<class OutIt, class Ch>
-        inline OutIt print_cdata_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            assert(node->type() == node_cdata);
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            *out = Ch('<'); ++out;
-            *out = Ch('!'); ++out;
-            *out = Ch('['); ++out;
-            *out = Ch('C'); ++out;
-            *out = Ch('D'); ++out;
-            *out = Ch('A'); ++out;
-            *out = Ch('T'); ++out;
-            *out = Ch('A'); ++out;
-            *out = Ch('['); ++out;
-            out = copy_chars(node->value(), node->value() + node->value_size(), out);
-            *out = Ch(']'); ++out;
-            *out = Ch(']'); ++out;
-            *out = Ch('>'); ++out;
-            return out;
-        }
-
-        // Print element node
-        template<class OutIt, class Ch>
-        inline OutIt print_element_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            assert(node->type() == node_element);
-
-            // Print element name and attributes, if any
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            *out = Ch('<'), ++out;
-            out = copy_chars(node->name(), node->name() + node->name_size(), out);
-            out = print_attributes(out, node, flags);
-
-            // If node is childless
-            if (node->value_size() == 0 && !node->first_node())
-            {
-                // Print childless node tag ending
-                *out = Ch('/'), ++out;
-                *out = Ch('>'), ++out;
-            }
-            else
-            {
-                // Print normal node tag ending
-                *out = Ch('>'), ++out;
-
-                // Test if node contains a single data node only (and no other nodes)
-                xml_node<Ch> *child = node->first_node();
-                if (!child)
-                {
-                    // If node has no children, only print its value without indenting
-                    out = copy_and_expand_chars(node->value(), node->value() + node->value_size(), Ch(0), out);
-                }
-                else if (child->next_sibling() == 0 && child->type() == node_data)
-                {
-                    // If node has a sole data child, only print its value without indenting
-                    out = copy_and_expand_chars(child->value(), child->value() + child->value_size(), Ch(0), out);
-                }
-                else
-                {
-                    // Print all children with full indenting
-                    if (!(flags & print_no_indenting))
-                        *out = Ch('\n'), ++out;
-                    out = print_children(out, node, flags, indent + 1);
-                    if (!(flags & print_no_indenting))
-                        out = fill_chars(out, indent, Ch('\t'));
-                }
-
-                // Print node end
-                *out = Ch('<'), ++out;
-                *out = Ch('/'), ++out;
-                out = copy_chars(node->name(), node->name() + node->name_size(), out);
-                *out = Ch('>'), ++out;
-            }
-            return out;
-        }
-
-        // Print declaration node
-        template<class OutIt, class Ch>
-        inline OutIt print_declaration_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            // Print declaration start
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            *out = Ch('<'), ++out;
-            *out = Ch('?'), ++out;
-            *out = Ch('x'), ++out;
-            *out = Ch('m'), ++out;
-            *out = Ch('l'), ++out;
-
-            // Print attributes
-            out = print_attributes(out, node, flags);
-
-            // Print declaration end
-            *out = Ch('?'), ++out;
-            *out = Ch('>'), ++out;
-
-            return out;
-        }
-
-        // Print comment node
-        template<class OutIt, class Ch>
-        inline OutIt print_comment_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            assert(node->type() == node_comment);
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            *out = Ch('<'), ++out;
-            *out = Ch('!'), ++out;
-            *out = Ch('-'), ++out;
-            *out = Ch('-'), ++out;
-            out = copy_chars(node->value(), node->value() + node->value_size(), out);
-            *out = Ch('-'), ++out;
-            *out = Ch('-'), ++out;
-            *out = Ch('>'), ++out;
-            return out;
-        }
-
-        // Print doctype node
-        template<class OutIt, class Ch>
-        inline OutIt print_doctype_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            assert(node->type() == node_doctype);
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            *out = Ch('<'), ++out;
-            *out = Ch('!'), ++out;
-            *out = Ch('D'), ++out;
-            *out = Ch('O'), ++out;
-            *out = Ch('C'), ++out;
-            *out = Ch('T'), ++out;
-            *out = Ch('Y'), ++out;
-            *out = Ch('P'), ++out;
-            *out = Ch('E'), ++out;
-            *out = Ch(' '), ++out;
-            out = copy_chars(node->value(), node->value() + node->value_size(), out);
-            *out = Ch('>'), ++out;
-            return out;
-        }
-
-        // Print pi node
-        template<class OutIt, class Ch>
-        inline OutIt print_pi_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
-        {
-            assert(node->type() == node_pi);
-            if (!(flags & print_no_indenting))
-                out = fill_chars(out, indent, Ch('\t'));
-            *out = Ch('<'), ++out;
-            *out = Ch('?'), ++out;
-            out = copy_chars(node->name(), node->name() + node->name_size(), out);
-            *out = Ch(' '), ++out;
-            out = copy_chars(node->value(), node->value() + node->value_size(), out);
-            *out = Ch('?'), ++out;
-            *out = Ch('>'), ++out;
-            return out;
-        }
-
-    }
-    //! \endcond
-
-    ///////////////////////////////////////////////////////////////////////////
-    // Printing
-
-    //! Prints XML to given output iterator.
-    //! \param out Output iterator to print to.
-    //! \param node Node to be printed. Pass xml_document to print entire document.
-    //! \param flags Flags controlling how XML is printed.
-    //! \return Output iterator pointing to position immediately after last character of printed text.
-    template<class OutIt, class Ch>
-    inline OutIt print(OutIt out, const xml_node<Ch> &node, int flags = 0)
-    {
-        return internal::print_node(out, &node, flags, 0);
-    }
-
-#ifndef RAPIDXML_NO_STREAMS
-
-    //! Prints XML to given output stream.
-    //! \param out Output stream to print to.
-    //! \param node Node to be printed. Pass xml_document to print entire document.
-    //! \param flags Flags controlling how XML is printed.
-    //! \return Output stream.
-    template<class Ch>
-    inline std::basic_ostream<Ch> &print(std::basic_ostream<Ch> &out, const xml_node<Ch> &node, int flags = 0)
-    {
-        print(std::ostream_iterator<Ch>(out), node, flags);
-        return out;
-    }
-
-    //! Prints formatted XML to given output stream. Uses default printing flags. Use print() function to customize printing process.
-    //! \param out Output stream to print to.
-    //! \param node Node to be printed.
-    //! \return Output stream.
-    template<class Ch>
-    inline std::basic_ostream<Ch> &operator <<(std::basic_ostream<Ch> &out, const xml_node<Ch> &node)
-    {
-        return print(out, node);
-    }
-
-#endif
-
-}
-
-#endif
@@ -1,37 +0,0 @@
-// stb_dxt.cpp - Real-Time DXT1/DXT5 compressor 
-// Based on original by fabian "ryg" giesen v1.04
-// Custom version, modified by Yann Collet
-//
-/*
-   BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are
-   met:
-
-       * Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above
-   copyright notice, this list of conditions and the following disclaimer
-   in the documentation and/or other materials provided with the
-   distribution.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-   You can contact the author at :
-   - RygsDXTc source repository : http://code.google.com/p/rygsdxtc/
-*/
-
-
-#define STB_DXT_IMPLEMENTATION
-#include "stb_dxt.h"
--- a/Show More
+++ b/Show More