| /* 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_PORTABLE disables dangerous optimizations, like unaligned |
| read and overlapping memcpy; this reduces decompression speed by 5% |
| * BROTLI_BUILD_NO_RBIT disables "rbit" optimization for ARM CPUs |
| * 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 |
| */ |
| |
| #ifndef BROTLI_COMMON_PLATFORM_H_ |
| #define BROTLI_COMMON_PLATFORM_H_ |
| |
| #include <string.h> /* memcpy */ |
| #include <stdlib.h> /* malloc, free */ |
| |
| #include <brotli/port.h> |
| #include <brotli/types.h> |
| |
| #if defined(OS_LINUX) || defined(OS_CYGWIN) |
| #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 BYTE_ORDER |
| #define BROTLI_X_LITTLE_ENDIAN LITTLE_ENDIAN |
| #define BROTLI_X_BIG_ENDIAN BIG_ENDIAN |
| #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 <evan@nemerson.com> */ |
| |
| /* >>> >>> >>> 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, 12, 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) (__builtin_expect(!!(x), 1)) |
| #define BROTLI_PREDICT_FALSE(x) (__builtin_expect(x, 0)) |
| #else |
| #define BROTLI_PREDICT_FALSE(x) (x) |
| #define BROTLI_PREDICT_TRUE(x) (x) |
| #endif |
| |
| #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \ |
| !defined(__cplusplus) |
| #define BROTLI_RESTRICT 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 __restrict |
| #elif BROTLI_SUNPRO_VERSION_CHECK(5, 3, 0) && !defined(__cplusplus) |
| #define BROTLI_RESTRICT _Restrict |
| #else |
| #define BROTLI_RESTRICT |
| #endif |
| |
| #if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \ |
| (defined(__cplusplus) && (__cplusplus >= 199711L)) |
| #define BROTLI_MAYBE_INLINE inline |
| #elif defined(__GNUC_STDC_INLINE__) || defined(__GNUC_GNU_INLINE__) || \ |
| BROTLI_ARM_VERSION_CHECK(6, 2, 0) |
| #define BROTLI_MAYBE_INLINE __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 __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 BROTLI_MAYBE_INLINE __attribute__((__always_inline__)) |
| #elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0) |
| #define BROTLI_INLINE BROTLI_MAYBE_INLINE __forceinline |
| #elif BROTLI_TI_VERSION_CHECK(7, 0, 0) && defined(__cplusplus) |
| #define BROTLI_INLINE BROTLI_MAYBE_INLINE _Pragma("FUNC_ALWAYS_INLINE;") |
| #elif BROTLI_IAR_VERSION_CHECK(8, 0, 0) |
| #define BROTLI_INLINE BROTLI_MAYBE_INLINE _Pragma("inline=forced") |
| #else |
| #define BROTLI_INLINE BROTLI_MAYBE_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 __attribute__((__noinline__)) |
| #elif BROTLI_MSVC_VERSION_CHECK(13, 10, 0) |
| #define BROTLI_NOINLINE __declspec(noinline) |
| #elif BROTLI_PGI_VERSION_CHECK(10, 2, 0) |
| #define BROTLI_NOINLINE _Pragma("noinline") |
| #elif BROTLI_TI_VERSION_CHECK(6, 0, 0) && defined(__cplusplus) |
| #define BROTLI_NOINLINE _Pragma("FUNC_CANNOT_INLINE;") |
| #elif BROTLI_IAR_VERSION_CHECK(8, 0, 0) |
| #define BROTLI_NOINLINE _Pragma("inline=never") |
| #else |
| #define BROTLI_NOINLINE |
| #endif |
| |
| /* BROTLI_INTERNAL could be defined to override visibility, e.g. for tests. */ |
| #if !defined(BROTLI_INTERNAL) |
| #if defined(_WIN32) || defined(__CYGWIN__) |
| #define BROTLI_INTERNAL |
| #elif BROTLI_GNUC_VERSION_CHECK(3, 3, 0) || \ |
| BROTLI_TI_VERSION_CHECK(8, 0, 0) || \ |
| BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \ |
| BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \ |
| BROTLI_IBM_VERSION_CHECK(13, 1, 0) || \ |
| BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \ |
| (BROTLI_TI_VERSION_CHECK(7, 3, 0) && \ |
| defined(__TI_GNU_ATTRIBUTE_SUPPORT__) && defined(__TI_EABI__)) |
| #define BROTLI_INTERNAL __attribute__ ((visibility ("hidden"))) |
| #else |
| #define BROTLI_INTERNAL |
| #endif |
| #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 static BROTLI_INLINE __attribute__ ((unused)) |
| #else |
| #define BROTLI_UNUSED_FUNCTION static BROTLI_INLINE |
| #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(__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(BROTLI_BUILD_64_BIT) |
| #define BROTLI_64_BITS 1 |
| #elif defined(BROTLI_BUILD_32_BIT) |
| #define BROTLI_64_BITS 0 |
| #elif defined(BROTLI_TARGET_X64) || defined(BROTLI_TARGET_ARMV8_64) || \ |
| defined(BROTLI_TARGET_POWERPC64) || defined(BROTLI_TARGET_RISCV64) |
| #define BROTLI_64_BITS 1 |
| #else |
| #define BROTLI_64_BITS 0 |
| #endif |
| |
| #if (BROTLI_64_BITS) |
| #define brotli_reg_t uint64_t |
| #else |
| #define brotli_reg_t uint32_t |
| #endif |
| |
| #if defined(BROTLI_BUILD_BIG_ENDIAN) |
| #define BROTLI_BIG_ENDIAN 1 |
| #elif defined(BROTLI_BUILD_LITTLE_ENDIAN) |
| #define BROTLI_LITTLE_ENDIAN 1 |
| #elif defined(BROTLI_BUILD_ENDIAN_NEUTRAL) |
| /* Just break elif chain. */ |
| #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) |
| #define BROTLI_LITTLE_ENDIAN 1 |
| #elif defined(_WIN32) || defined(BROTLI_TARGET_X64) |
| /* Win32 & x64 can currently always be assumed to be little endian */ |
| #define BROTLI_LITTLE_ENDIAN 1 |
| #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) |
| #define BROTLI_BIG_ENDIAN 1 |
| #elif defined(BROTLI_X_BYTE_ORDER) |
| #if BROTLI_X_BYTE_ORDER == BROTLI_X_LITTLE_ENDIAN |
| #define BROTLI_LITTLE_ENDIAN 1 |
| #elif BROTLI_X_BYTE_ORDER == BROTLI_X_BIG_ENDIAN |
| #define BROTLI_BIG_ENDIAN 1 |
| #endif |
| #endif /* BROTLI_X_BYTE_ORDER */ |
| |
| #if !defined(BROTLI_LITTLE_ENDIAN) |
| #define BROTLI_LITTLE_ENDIAN 0 |
| #endif |
| |
| #if !defined(BROTLI_BIG_ENDIAN) |
| #define BROTLI_BIG_ENDIAN 0 |
| #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_PORTABLE) |
| #define BROTLI_ALIGNED_READ (!!1) |
| #elif defined(BROTLI_TARGET_X86) || defined(BROTLI_TARGET_X64) || \ |
| defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) || \ |
| defined(BROTLI_TARGET_RISCV64) |
| /* Allow unaligned read only for white-listed CPUs. */ |
| #define BROTLI_ALIGNED_READ (!!0) |
| #else |
| #define BROTLI_ALIGNED_READ (!!1) |
| #endif |
| |
| #if BROTLI_ALIGNED_READ |
| /* Portable unaligned memory access: read / write values via memcpy. */ |
| static BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) { |
| uint16_t t; |
| memcpy(&t, p, sizeof t); |
| return t; |
| } |
| static BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) { |
| uint32_t t; |
| memcpy(&t, p, sizeof t); |
| return t; |
| } |
| static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) { |
| uint64_t t; |
| memcpy(&t, p, sizeof t); |
| return t; |
| } |
| static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) { |
| memcpy(p, &v, sizeof v); |
| } |
| #else /* BROTLI_ALIGNED_READ */ |
| /* Unaligned memory access is allowed: just cast pointer to requested type. */ |
| static BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) { |
| return *(const uint16_t*)p; |
| } |
| static BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) { |
| return *(const uint32_t*)p; |
| } |
| #if (BROTLI_64_BITS) |
| static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) { |
| return *(const uint64_t*)p; |
| } |
| static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) { |
| *(uint64_t*)p = v; |
| } |
| #else /* BROTLI_64_BITS */ |
| /* Avoid emitting LDRD / STRD, which require properly aligned address. */ |
| /* If __attribute__(aligned) is available, use that. Otherwise, memcpy. */ |
| |
| #if BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) |
| typedef __attribute__((aligned(1))) uint64_t unaligned_uint64_t; |
| |
| static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) { |
| return (uint64_t) ((unaligned_uint64_t*) p)[0]; |
| } |
| static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) { |
| unaligned_uint64_t* dwords = (unaligned_uint64_t*) p; |
| dwords[0] = (unaligned_uint64_t) v; |
| } |
| #else /* BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) */ |
| static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) { |
| uint64_t v; |
| memcpy(&v, p, sizeof(uint64_t)); |
| return v; |
| } |
| |
| static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) { |
| memcpy(p, &v, sizeof(uint64_t)); |
| } |
| #endif /* BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) */ |
| #endif /* BROTLI_64_BITS */ |
| #endif /* BROTLI_ALIGNED_READ */ |
| |
| #if BROTLI_LITTLE_ENDIAN |
| /* Straight endianness. Just read / write values. */ |
| #define BROTLI_UNALIGNED_LOAD16LE BrotliUnalignedRead16 |
| #define BROTLI_UNALIGNED_LOAD32LE BrotliUnalignedRead32 |
| #define BROTLI_UNALIGNED_LOAD64LE BrotliUnalignedRead64 |
| #define BROTLI_UNALIGNED_STORE64LE BrotliUnalignedWrite64 |
| #elif BROTLI_BIG_ENDIAN /* BROTLI_LITTLE_ENDIAN */ |
| /* Explain compiler to byte-swap values. */ |
| #define BROTLI_BSWAP16_(V) ((uint16_t)( \ |
| (((V) & 0xFFU) << 8) | \ |
| (((V) >> 8) & 0xFFU))) |
| static BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) { |
| uint16_t value = BrotliUnalignedRead16(p); |
| return BROTLI_BSWAP16_(value); |
| } |
| #define BROTLI_BSWAP32_(V) ( \ |
| (((V) & 0xFFU) << 24) | (((V) & 0xFF00U) << 8) | \ |
| (((V) >> 8) & 0xFF00U) | (((V) >> 24) & 0xFFU)) |
| static BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) { |
| uint32_t value = BrotliUnalignedRead32(p); |
| return BROTLI_BSWAP32_(value); |
| } |
| #define BROTLI_BSWAP64_(V) ( \ |
| (((V) & 0xFFU) << 56) | (((V) & 0xFF00U) << 40) | \ |
| (((V) & 0xFF0000U) << 24) | (((V) & 0xFF000000U) << 8) | \ |
| (((V) >> 8) & 0xFF000000U) | (((V) >> 24) & 0xFF0000U) | \ |
| (((V) >> 40) & 0xFF00U) | (((V) >> 56) & 0xFFU)) |
| 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 */ |
| |
| /* 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) (!!__builtin_constant_p(x)) |
| #else |
| #define BROTLI_IS_CONSTANT(x) (!!0) |
| #endif |
| |
| #if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) |
| #define BROTLI_HAS_UBFX (!!1) |
| #else |
| #define BROTLI_HAS_UBFX (!!0) |
| #endif |
| |
| #if defined(BROTLI_ENABLE_LOG) |
| #define BROTLI_DCHECK(x) assert(x) |
| #define BROTLI_LOG(x) printf x |
| #else |
| #define BROTLI_DCHECK(x) |
| #define BROTLI_LOG(x) |
| #endif |
| |
| #if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG) |
| 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() BrotliDump(__FILE__, __LINE__, __FUNCTION__) |
| #else |
| #define BROTLI_DUMP() (void)(0) |
| #endif |
| |
| /* TODO: 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: 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(x) BrotliRBit(x) |
| #endif /* armv7 / armv8 */ |
| #endif /* gcc || clang */ |
| #if !defined(BROTLI_RBIT) |
| static BROTLI_INLINE void BrotliRBit(void) { /* Should break build if used. */ } |
| #endif /* BROTLI_RBIT */ |
| |
| #define BROTLI_REPEAT(N, X) { \ |
| if ((N & 1) != 0) {X;} \ |
| if ((N & 2) != 0) {X; X;} \ |
| if ((N & 4) != 0) {X; X; X; X;} \ |
| } |
| |
| #define BROTLI_UNUSED(X) (void)(X) |
| |
| #define BROTLI_MIN_MAX(T) \ |
| static BROTLI_INLINE T brotli_min_ ## T (T a, T b) { return a < b ? a : b; } \ |
| static BROTLI_INLINE T brotli_max_ ## T (T a, T b) { return a > b ? a : b; } |
| 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) (brotli_min_ ## T((A), (B))) |
| #define BROTLI_MAX(T, A, B) (brotli_max_ ## T((A), (B))) |
| |
| #define BROTLI_SWAP(T, A, I, J) { \ |
| T __brotli_swap_tmp = (A)[(I)]; \ |
| (A)[(I)] = (A)[(J)]; \ |
| (A)[(J)] = __brotli_swap_tmp; \ |
| } |
| |
| /* Default brotli_alloc_func */ |
| static void* BrotliDefaultAllocFunc(void* opaque, size_t size) { |
| BROTLI_UNUSED(opaque); |
| return malloc(size); |
| } |
| |
| /* Default brotli_free_func */ |
| static void BrotliDefaultFreeFunc(void* opaque, void* address) { |
| BROTLI_UNUSED(opaque); |
| free(address); |
| } |
| |
| BROTLI_UNUSED_FUNCTION void BrotliSuppressUnusedFunctions(void) { |
| BROTLI_UNUSED(&BrotliSuppressUnusedFunctions); |
| BROTLI_UNUSED(&BrotliUnalignedRead16); |
| BROTLI_UNUSED(&BrotliUnalignedRead32); |
| BROTLI_UNUSED(&BrotliUnalignedRead64); |
| BROTLI_UNUSED(&BrotliUnalignedWrite64); |
| BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD16LE); |
| BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD32LE); |
| BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD64LE); |
| BROTLI_UNUSED(&BROTLI_UNALIGNED_STORE64LE); |
| BROTLI_UNUSED(&BrotliRBit); |
| BROTLI_UNUSED(&brotli_min_double); |
| BROTLI_UNUSED(&brotli_max_double); |
| BROTLI_UNUSED(&brotli_min_float); |
| BROTLI_UNUSED(&brotli_max_float); |
| BROTLI_UNUSED(&brotli_min_int); |
| BROTLI_UNUSED(&brotli_max_int); |
| BROTLI_UNUSED(&brotli_min_size_t); |
| BROTLI_UNUSED(&brotli_max_size_t); |
| BROTLI_UNUSED(&brotli_min_uint32_t); |
| BROTLI_UNUSED(&brotli_max_uint32_t); |
| BROTLI_UNUSED(&brotli_min_uint8_t); |
| BROTLI_UNUSED(&brotli_max_uint8_t); |
| BROTLI_UNUSED(&BrotliDefaultAllocFunc); |
| BROTLI_UNUSED(&BrotliDefaultFreeFunc); |
| #if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG) |
| BROTLI_UNUSED(&BrotliDump); |
| #endif |
| } |
| |
| #endif /* BROTLI_COMMON_PLATFORM_H_ */ |
