// Copyright 2022 Google Inc. All Rights Reserved. // // Use of this source code is governed by a BSD-style license // that can be found in the COPYING file in the root of the source // tree. An additional intellectual property rights grant can be found // in the file PATENTS. All contributing project authors may // be found in the AUTHORS file in the root of the source tree. // ----------------------------------------------------------------------------- // // CPU detection functions and macros. // // Author: Skal ([email protected]) #ifndef WEBP_DSP_CPU_H_ #define WEBP_DSP_CPU_H_ #include <stddef.h> #ifdef HAVE_CONFIG_H #include "src/webp/config.h" #endif #include "src/webp/types.h" #if defined(__GNUC__) #define LOCAL_GCC_VERSION … #define LOCAL_GCC_PREREQ(maj, min) … #else #define LOCAL_GCC_VERSION … #define LOCAL_GCC_PREREQ … #endif #if defined(__clang__) #define LOCAL_CLANG_VERSION … #define LOCAL_CLANG_PREREQ(maj, min) … #else #define LOCAL_CLANG_VERSION … #define LOCAL_CLANG_PREREQ … #endif #ifndef __has_builtin #define __has_builtin … #endif //------------------------------------------------------------------------------ // x86 defines. #if !defined(HAVE_CONFIG_H) #if defined(_MSC_VER) && !defined(__clang__) && _MSC_VER > 1310 && \ (defined(_M_X64) || defined(_M_IX86)) #define WEBP_MSC_SSE2 … #endif #if defined(_MSC_VER) && !defined(__clang__) && _MSC_VER >= 1500 && \ (defined(_M_X64) || defined(_M_IX86)) #define WEBP_MSC_SSE41 … #endif #endif // WEBP_HAVE_* are used to indicate the presence of the instruction set in dsp // files without intrinsics, allowing the corresponding Init() to be called. // Files containing intrinsics will need to be built targeting the instruction // set so should succeed on one of the earlier tests. #if (defined(__SSE2__) || defined(WEBP_MSC_SSE2)) && \ (!defined(HAVE_CONFIG_H) || defined(WEBP_HAVE_SSE2)) #define WEBP_USE_SSE2 #endif #if defined(WEBP_USE_SSE2) && !defined(WEBP_HAVE_SSE2) #define WEBP_HAVE_SSE2 #endif #if (defined(__SSE4_1__) || defined(WEBP_MSC_SSE41)) && \ (!defined(HAVE_CONFIG_H) || defined(WEBP_HAVE_SSE41)) #define WEBP_USE_SSE41 #endif #if defined(WEBP_USE_SSE41) && !defined(WEBP_HAVE_SSE41) #define WEBP_HAVE_SSE41 #endif #undef WEBP_MSC_SSE41 #undef WEBP_MSC_SSE2 //------------------------------------------------------------------------------ // Arm defines. // The intrinsics currently cause compiler errors with arm-nacl-gcc and the // inline assembly would need to be modified for use with Native Client. #if ((defined(__ARM_NEON__) || defined(__aarch64__)) && \ (!defined(HAVE_CONFIG_H) || defined(WEBP_HAVE_NEON))) && \ !defined(__native_client__) #define WEBP_USE_NEON #endif #if !defined(WEBP_USE_NEON) && defined(__ANDROID__) && \ defined(__ARM_ARCH_7A__) && defined(HAVE_CPU_FEATURES_H) #define WEBP_ANDROID_NEON … #define WEBP_USE_NEON #endif // Note: ARM64 is supported in Visual Studio 2017, but requires the direct // inclusion of arm64_neon.h; Visual Studio 2019 includes this file in // arm_neon.h. Compile errors were seen with Visual Studio 2019 16.4 with // vtbl4_u8(); a fix was made in 16.6. #if defined(_MSC_VER) && \ ((_MSC_VER >= 1700 && defined(_M_ARM)) || \ (_MSC_VER >= 1926 && (defined(_M_ARM64) || defined(_M_ARM64EC)))) #define WEBP_USE_NEON #define WEBP_USE_INTRINSICS #endif #if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC) #define WEBP_AARCH64 … #else #define WEBP_AARCH64 … #endif #if defined(WEBP_USE_NEON) && !defined(WEBP_HAVE_NEON) #define WEBP_HAVE_NEON #endif //------------------------------------------------------------------------------ // MIPS defines. #if defined(__mips__) && !defined(__mips64) && defined(__mips_isa_rev) && \ (__mips_isa_rev >= 1) && (__mips_isa_rev < 6) #define WEBP_USE_MIPS32 #if (__mips_isa_rev >= 2) #define WEBP_USE_MIPS32_R2 #if defined(__mips_dspr2) || (defined(__mips_dsp_rev) && __mips_dsp_rev >= 2) #define WEBP_USE_MIPS_DSP_R2 #endif #endif #endif #if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5) #define WEBP_USE_MSA #endif //------------------------------------------------------------------------------ #ifndef WEBP_DSP_OMIT_C_CODE #define WEBP_DSP_OMIT_C_CODE … #endif #if defined(WEBP_USE_NEON) && WEBP_DSP_OMIT_C_CODE #define WEBP_NEON_OMIT_C_CODE … #else #define WEBP_NEON_OMIT_C_CODE … #endif #if !(LOCAL_CLANG_PREREQ(3, 8) || LOCAL_GCC_PREREQ(4, 8) || WEBP_AARCH64) #define WEBP_NEON_WORK_AROUND_GCC … #else #define WEBP_NEON_WORK_AROUND_GCC … #endif //------------------------------------------------------------------------------ // This macro prevents thread_sanitizer from reporting known concurrent writes. #define WEBP_TSAN_IGNORE_FUNCTION #if defined(__has_feature) #if __has_feature(thread_sanitizer) #undef WEBP_TSAN_IGNORE_FUNCTION #define WEBP_TSAN_IGNORE_FUNCTION … #endif #endif #if defined(__has_feature) #if __has_feature(memory_sanitizer) #define WEBP_MSAN #endif #endif #if defined(WEBP_USE_THREAD) && !defined(_WIN32) #include <pthread.h> // NOLINT #define WEBP_DSP_INIT … #else // !(defined(WEBP_USE_THREAD) && !defined(_WIN32)) #define WEBP_DSP_INIT(func) … #endif // defined(WEBP_USE_THREAD) && !defined(_WIN32) // Defines an Init + helper function that control multiple initialization of // function pointers / tables. /* Usage: WEBP_DSP_INIT_FUNC(InitFunc) { ...function body } */ #define WEBP_DSP_INIT_FUNC(name) … #define WEBP_UBSAN_IGNORE_UNDEF #define WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW #if defined(__clang__) && defined(__has_attribute) #if __has_attribute(no_sanitize) // This macro prevents the undefined behavior sanitizer from reporting // failures. This is only meant to silence unaligned loads on platforms that // are known to support them. #undef WEBP_UBSAN_IGNORE_UNDEF #define WEBP_UBSAN_IGNORE_UNDEF … // This macro prevents the undefined behavior sanitizer from reporting // failures related to unsigned integer overflows. This is only meant to // silence cases where this well defined behavior is expected. #undef WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW #define WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW … #endif #endif // If 'ptr' is NULL, returns NULL. Otherwise returns 'ptr + off'. // Prevents undefined behavior sanitizer nullptr-with-nonzero-offset warning. #if !defined(WEBP_OFFSET_PTR) #define WEBP_OFFSET_PTR(ptr, off) … #endif // Regularize the definition of WEBP_SWAP_16BIT_CSP (backward compatibility) #if !defined(WEBP_SWAP_16BIT_CSP) #define WEBP_SWAP_16BIT_CSP … #endif // some endian fix (e.g.: mips-gcc doesn't define __BIG_ENDIAN__) #if !defined(WORDS_BIGENDIAN) && \ (defined(__BIG_ENDIAN__) || defined(_M_PPC) || \ (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))) #define WORDS_BIGENDIAN #endif CPUFeature; // returns true if the CPU supports the feature. VP8CPUInfo; #endif // WEBP_DSP_CPU_H_
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