/* Copyright 2016 Google Inc. All Rights Reserved. Distributed under MIT license. See file LICENSE for detail or copy at https://opensource.org/licenses/MIT */ /* Macros for compiler / platform specific features and build options. Build options are: * BROTLI_BUILD_32_BIT disables 64-bit optimizations * BROTLI_BUILD_64_BIT forces to use 64-bit optimizations * BROTLI_BUILD_BIG_ENDIAN forces to use big-endian optimizations * BROTLI_BUILD_ENDIAN_NEUTRAL disables endian-aware optimizations * BROTLI_BUILD_LITTLE_ENDIAN forces to use little-endian optimizations * BROTLI_BUILD_NO_RBIT disables "rbit" optimization for ARM CPUs * BROTLI_BUILD_NO_UNALIGNED_READ_FAST forces off the fast-unaligned-read optimizations (mainly for testing purposes) * BROTLI_DEBUG dumps file name and line number when decoder detects stream or memory error * BROTLI_ENABLE_LOG enables asserts and dumps various state information * BROTLI_ENABLE_DUMP overrides default "dump" behaviour */ #ifndef BROTLI_COMMON_PLATFORM_H_ #define BROTLI_COMMON_PLATFORM_H_ #include <string.h> /* memcpy */ #include <brotli/port.h> #include <brotli/types.h> #if defined(OS_LINUX) || defined(OS_CYGWIN) || defined(__EMSCRIPTEN__) #include <endian.h> #elif defined(OS_FREEBSD) #include <machine/endian.h> #elif defined(OS_MACOSX) #include <machine/endian.h> /* Let's try and follow the Linux convention */ #define BROTLI_X_BYTE_ORDER … #define BROTLI_X_LITTLE_ENDIAN … #define BROTLI_X_BIG_ENDIAN … #endif #if BROTLI_MSVC_VERSION_CHECK(18, 0, 0) #include <intrin.h> #endif #if defined(BROTLI_ENABLE_LOG) || defined(BROTLI_DEBUG) #include <assert.h> #include <stdio.h> #endif /* The following macros were borrowed from https://github.com/nemequ/hedley * with permission of original author - Evan Nemerson <[email protected]> */ /* >>> >>> >>> hedley macros */ /* Define "BROTLI_PREDICT_TRUE" and "BROTLI_PREDICT_FALSE" macros for capable compilers. To apply compiler hint, enclose the branching condition into macros, like this: if (BROTLI_PREDICT_TRUE(zero == 0)) { // main execution path } else { // compiler should place this code outside of main execution path } OR: if (BROTLI_PREDICT_FALSE(something_rare_or_unexpected_happens)) { // compiler should place this code outside of main execution path } */ #if BROTLI_GNUC_HAS_BUILTIN(__builtin_expect, 3, 0, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \ BROTLI_SUNPRO_VERSION_CHECK(5, 15, 0) || \ BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \ BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \ BROTLI_TI_VERSION_CHECK(7, 3, 0) || \ BROTLI_TINYC_VERSION_CHECK(0, 9, 27) #define BROTLI_PREDICT_TRUE(x) … #define BROTLI_PREDICT_FALSE(x) … #else #define BROTLI_PREDICT_FALSE … #define BROTLI_PREDICT_TRUE … #endif #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \ !defined(__cplusplus) #define BROTLI_RESTRICT … #elif BROTLI_GNUC_VERSION_CHECK(3, 1, 0) || \ BROTLI_MSVC_VERSION_CHECK(14, 0, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \ BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \ BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \ BROTLI_PGI_VERSION_CHECK(17, 10, 0) || \ BROTLI_TI_VERSION_CHECK(8, 0, 0) || \ BROTLI_IAR_VERSION_CHECK(8, 0, 0) || \ (BROTLI_SUNPRO_VERSION_CHECK(5, 14, 0) && defined(__cplusplus)) #define BROTLI_RESTRICT … #elif BROTLI_SUNPRO_VERSION_CHECK(5, 3, 0) && !defined(__cplusplus) #define BROTLI_RESTRICT … #else #define BROTLI_RESTRICT #endif #if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \ (defined(__cplusplus) && (__cplusplus >= 199711L)) #define BROTLI_MAYBE_INLINE … #elif defined(__GNUC_STDC_INLINE__) || defined(__GNUC_GNU_INLINE__) || \ BROTLI_ARM_VERSION_CHECK(6, 2, 0) #define BROTLI_MAYBE_INLINE … #elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0) || \ BROTLI_ARM_VERSION_CHECK(4, 1, 0) || BROTLI_TI_VERSION_CHECK(8, 0, 0) #define BROTLI_MAYBE_INLINE … #else #define BROTLI_MAYBE_INLINE #endif #if BROTLI_GNUC_HAS_ATTRIBUTE(always_inline, 4, 0, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \ BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \ BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \ BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \ BROTLI_TI_VERSION_CHECK(8, 0, 0) || \ (BROTLI_TI_VERSION_CHECK(7, 3, 0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) #define BROTLI_INLINE … #elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0) #define BROTLI_INLINE … #elif BROTLI_TI_VERSION_CHECK(7, 0, 0) && defined(__cplusplus) #define BROTLI_INLINE … #elif BROTLI_IAR_VERSION_CHECK(8, 0, 0) #define BROTLI_INLINE … #else #define BROTLI_INLINE … #endif #if BROTLI_GNUC_HAS_ATTRIBUTE(noinline, 4, 0, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \ BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \ BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \ BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \ BROTLI_TI_VERSION_CHECK(8, 0, 0) || \ (BROTLI_TI_VERSION_CHECK(7, 3, 0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) #define BROTLI_NOINLINE … #elif BROTLI_MSVC_VERSION_CHECK(13, 10, 0) #define BROTLI_NOINLINE … #elif BROTLI_PGI_VERSION_CHECK(10, 2, 0) #define BROTLI_NOINLINE … #elif BROTLI_TI_VERSION_CHECK(6, 0, 0) && defined(__cplusplus) #define BROTLI_NOINLINE … #elif BROTLI_IAR_VERSION_CHECK(8, 0, 0) #define BROTLI_NOINLINE … #else #define BROTLI_NOINLINE #endif /* <<< <<< <<< end of hedley macros. */ #if BROTLI_GNUC_HAS_ATTRIBUTE(unused, 2, 7, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) #define BROTLI_UNUSED_FUNCTION … #else #define BROTLI_UNUSED_FUNCTION … #endif #if BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) #define BROTLI_ALIGNED(N) … #else #define BROTLI_ALIGNED … #endif #if (defined(__ARM_ARCH) && (__ARM_ARCH == 7)) || \ (defined(M_ARM) && (M_ARM == 7)) #define BROTLI_TARGET_ARMV7 #endif /* ARMv7 */ #if (defined(__ARM_ARCH) && (__ARM_ARCH == 8)) || \ defined(__aarch64__) || defined(__ARM64_ARCH_8__) #define BROTLI_TARGET_ARMV8_ANY #if defined(__ARM_32BIT_STATE) #define BROTLI_TARGET_ARMV8_32 #elif defined(__ARM_64BIT_STATE) #define BROTLI_TARGET_ARMV8_64 #endif #endif /* ARMv8 */ #if defined(__ARM_NEON__) || defined(__ARM_NEON) #define BROTLI_TARGET_NEON #endif #if defined(__i386) || defined(_M_IX86) #define BROTLI_TARGET_X86 #endif #if defined(__x86_64__) || defined(_M_X64) #define BROTLI_TARGET_X64 #endif #if defined(__PPC64__) #define BROTLI_TARGET_POWERPC64 #endif #if defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64 #define BROTLI_TARGET_RISCV64 #endif #if defined(__loongarch_lp64) #define BROTLI_TARGET_LOONGARCH64 #endif #if defined(BROTLI_TARGET_X64) || defined(BROTLI_TARGET_ARMV8_64) || \ defined(BROTLI_TARGET_POWERPC64) || defined(BROTLI_TARGET_RISCV64) || \ defined(BROTLI_TARGET_LOONGARCH64) #define BROTLI_TARGET_64_BITS … #else #define BROTLI_TARGET_64_BITS … #endif #if defined(BROTLI_BUILD_64_BIT) #define BROTLI_64_BITS … #elif defined(BROTLI_BUILD_32_BIT) #define BROTLI_64_BITS … #else #define BROTLI_64_BITS … #endif #if (BROTLI_64_BITS) #define brotli_reg_t … #else #define brotli_reg_t … #endif #if defined(BROTLI_BUILD_BIG_ENDIAN) #define BROTLI_BIG_ENDIAN … #elif defined(BROTLI_BUILD_LITTLE_ENDIAN) #define BROTLI_LITTLE_ENDIAN … #elif defined(BROTLI_BUILD_ENDIAN_NEUTRAL) /* Just break elif chain. */ #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) #define BROTLI_LITTLE_ENDIAN … #elif defined(_WIN32) || defined(BROTLI_TARGET_X64) /* Win32 & x64 can currently always be assumed to be little endian */ #define BROTLI_LITTLE_ENDIAN … #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) #define BROTLI_BIG_ENDIAN … #elif defined(BROTLI_X_BYTE_ORDER) #if BROTLI_X_BYTE_ORDER == BROTLI_X_LITTLE_ENDIAN #define BROTLI_LITTLE_ENDIAN … #elif BROTLI_X_BYTE_ORDER == BROTLI_X_BIG_ENDIAN #define BROTLI_BIG_ENDIAN … #endif #endif /* BROTLI_X_BYTE_ORDER */ #if !defined(BROTLI_LITTLE_ENDIAN) #define BROTLI_LITTLE_ENDIAN … #endif #if !defined(BROTLI_BIG_ENDIAN) #define BROTLI_BIG_ENDIAN … #endif #if defined(BROTLI_X_BYTE_ORDER) #undef BROTLI_X_BYTE_ORDER #undef BROTLI_X_LITTLE_ENDIAN #undef BROTLI_X_BIG_ENDIAN #endif #if defined(BROTLI_BUILD_NO_UNALIGNED_READ_FAST) #define BROTLI_UNALIGNED_READ_FAST … #elif defined(BROTLI_TARGET_X86) || defined(BROTLI_TARGET_X64) || \ defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) || \ defined(BROTLI_TARGET_RISCV64) || defined(BROTLI_TARGET_LOONGARCH64) /* These targets are known to generate efficient code for unaligned reads * (e.g. a single instruction, not multiple 1-byte loads, shifted and or'd * together). */ #define BROTLI_UNALIGNED_READ_FAST … #else #define BROTLI_UNALIGNED_READ_FAST … #endif /* Portable unaligned memory access: read / write values via memcpy. */ static BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) { … } static BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) { … } static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) { … } static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) { … } #if BROTLI_LITTLE_ENDIAN /* Straight endianness. Just read / write values. */ #define BROTLI_UNALIGNED_LOAD16LE … #define BROTLI_UNALIGNED_LOAD32LE … #define BROTLI_UNALIGNED_LOAD64LE … #define BROTLI_UNALIGNED_STORE64LE … #elif BROTLI_BIG_ENDIAN /* BROTLI_LITTLE_ENDIAN */ /* Explain compiler to byte-swap values. */ #define BROTLI_BSWAP16_ … static BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) { uint16_t value = BrotliUnalignedRead16(p); return BROTLI_BSWAP16_(value); } #define BROTLI_BSWAP32_ … static BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) { uint32_t value = BrotliUnalignedRead32(p); return BROTLI_BSWAP32_(value); } #define BROTLI_BSWAP64_ … static BROTLI_INLINE uint64_t BROTLI_UNALIGNED_LOAD64LE(const void* p) { uint64_t value = BrotliUnalignedRead64(p); return BROTLI_BSWAP64_(value); } static BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) { uint64_t value = BROTLI_BSWAP64_(v); BrotliUnalignedWrite64(p, value); } #else /* BROTLI_LITTLE_ENDIAN */ /* Read / store values byte-wise; hopefully compiler will understand. */ static BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) { const uint8_t* in = (const uint8_t*)p; return (uint16_t)(in[0] | (in[1] << 8)); } static BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) { const uint8_t* in = (const uint8_t*)p; uint32_t value = (uint32_t)(in[0]); value |= (uint32_t)(in[1]) << 8; value |= (uint32_t)(in[2]) << 16; value |= (uint32_t)(in[3]) << 24; return value; } static BROTLI_INLINE uint64_t BROTLI_UNALIGNED_LOAD64LE(const void* p) { const uint8_t* in = (const uint8_t*)p; uint64_t value = (uint64_t)(in[0]); value |= (uint64_t)(in[1]) << 8; value |= (uint64_t)(in[2]) << 16; value |= (uint64_t)(in[3]) << 24; value |= (uint64_t)(in[4]) << 32; value |= (uint64_t)(in[5]) << 40; value |= (uint64_t)(in[6]) << 48; value |= (uint64_t)(in[7]) << 56; return value; } static BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) { uint8_t* out = (uint8_t*)p; out[0] = (uint8_t)v; out[1] = (uint8_t)(v >> 8); out[2] = (uint8_t)(v >> 16); out[3] = (uint8_t)(v >> 24); out[4] = (uint8_t)(v >> 32); out[5] = (uint8_t)(v >> 40); out[6] = (uint8_t)(v >> 48); out[7] = (uint8_t)(v >> 56); } #endif /* BROTLI_LITTLE_ENDIAN */ static BROTLI_INLINE void* BROTLI_UNALIGNED_LOAD_PTR(const void* p) { … } static BROTLI_INLINE void BROTLI_UNALIGNED_STORE_PTR(void* p, const void* v) { … } /* BROTLI_IS_CONSTANT macros returns true for compile-time constants. */ #if BROTLI_GNUC_HAS_BUILTIN(__builtin_constant_p, 3, 0, 1) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) #define BROTLI_IS_CONSTANT(x) … #else #define BROTLI_IS_CONSTANT … #endif #if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) #define BROTLI_HAS_UBFX … #else #define BROTLI_HAS_UBFX … #endif #if defined(BROTLI_ENABLE_LOG) #define BROTLI_LOG … #else #define BROTLI_LOG(x) … #endif #if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG) #define BROTLI_ENABLE_DUMP_DEFAULT … #define BROTLI_DCHECK … #else #define BROTLI_ENABLE_DUMP_DEFAULT … #define BROTLI_DCHECK(x) … #endif #if !defined(BROTLI_ENABLE_DUMP) #define BROTLI_ENABLE_DUMP … #endif #if BROTLI_ENABLE_DUMP static BROTLI_INLINE void BrotliDump(const char* f, int l, const char* fn) { fprintf(stderr, "%s:%d (%s)\n", f, l, fn); fflush(stderr); } #define BROTLI_DUMP … #else #define BROTLI_DUMP() … #endif /* BrotliRBit assumes brotli_reg_t fits native CPU register type. */ #if (BROTLI_64_BITS == BROTLI_TARGET_64_BITS) /* TODO(eustas): add appropriate icc/sunpro/arm/ibm/ti checks. */ #if (BROTLI_GNUC_VERSION_CHECK(3, 0, 0) || defined(__llvm__)) && \ !defined(BROTLI_BUILD_NO_RBIT) #if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) /* TODO(eustas): detect ARMv6T2 and enable this code for it. */ static BROTLI_INLINE brotli_reg_t BrotliRBit(brotli_reg_t input) { brotli_reg_t output; __asm__("rbit %0, %1\n" : "=r"(output) : "r"(input)); return output; } #define BROTLI_RBIT … #endif /* armv7 / armv8 */ #endif /* gcc || clang */ #endif /* brotli_reg_t is native */ #if !defined(BROTLI_RBIT) static BROTLI_INLINE void BrotliRBit(void) { … } #endif /* BROTLI_RBIT */ #define BROTLI_REPEAT_4(X) … #define BROTLI_REPEAT_5(X) … #define BROTLI_REPEAT_6(X) … #define BROTLI_UNUSED(X) … #define BROTLI_MIN_MAX … BROTLI_MIN_MAX(double) BROTLI_MIN_MAX(float) BROTLI_MIN_MAX(int) BROTLI_MIN_MAX(size_t) BROTLI_MIN_MAX(uint32_t) BROTLI_MIN_MAX(uint8_t) #undef BROTLI_MIN_MAX #define BROTLI_MIN(T, A, B) … #define BROTLI_MAX(T, A, B) … #define BROTLI_SWAP(T, A, I, J) … #if BROTLI_64_BITS #if BROTLI_GNUC_HAS_BUILTIN(__builtin_ctzll, 3, 4, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) #define BROTLI_TZCNT64 … #elif BROTLI_MSVC_VERSION_CHECK(18, 0, 0) #if defined(BROTLI_TARGET_X64) #define BROTLI_TZCNT64 … #else /* BROTLI_TARGET_X64 */ static BROTLI_INLINE uint32_t BrotliBsf64Msvc(uint64_t x) { uint32_t lsb; _BitScanForward64(&lsb, x); return lsb; } #define BROTLI_TZCNT64 … #endif /* BROTLI_TARGET_X64 */ #endif /* __builtin_ctzll */ #endif /* BROTLI_64_BITS */ #if BROTLI_GNUC_HAS_BUILTIN(__builtin_clz, 3, 4, 0) || \ BROTLI_INTEL_VERSION_CHECK(16, 0, 0) #define BROTLI_BSR32(x) … #elif BROTLI_MSVC_VERSION_CHECK(18, 0, 0) static BROTLI_INLINE uint32_t BrotliBsr32Msvc(uint32_t x) { unsigned long msb; _BitScanReverse(&msb, x); return (uint32_t)msb; } #define BROTLI_BSR32 … #endif /* __builtin_clz */ /* Default brotli_alloc_func */ BROTLI_COMMON_API void* BrotliDefaultAllocFunc(void* opaque, size_t size); /* Default brotli_free_func */ BROTLI_COMMON_API void BrotliDefaultFreeFunc(void* opaque, void* address); BROTLI_UNUSED_FUNCTION void BrotliSuppressUnusedFunctions(void) { … } #endif /* BROTLI_COMMON_PLATFORM_H_ */
Codebase Browser
godot