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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-11-14 09:07:29 +0100
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-11-14 09:07:29 +0100
commit56de283899bc91f7110aba58a3ca174c10852683 (patch)
tree779e6501bbbe4f015509c423ab44f2f40ea97cc8 /modules/brotli/common/platform.h
parentce0dd36a78814c59950fde6c19413c1f7ea85ee1 (diff)
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Issue #1288 - Part 1a: Update brotli to 1.0.7
This also reorganizes the exports in the build system to use `brotli/` as include directory.
Diffstat (limited to 'modules/brotli/common/platform.h')
-rw-r--r--modules/brotli/common/platform.h568
1 files changed, 568 insertions, 0 deletions
diff --git a/modules/brotli/common/platform.h b/modules/brotli/common/platform.h
new file mode 100644
index 000000000..84c448c4c
--- /dev/null
+++ b/modules/brotli/common/platform.h
@@ -0,0 +1,568 @@
+/* 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, 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) (__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 BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0)
+#define BROTLI_ALIGNED(N) __attribute__((aligned(N)))
+#else
+#define BROTLI_ALIGNED(N)
+#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(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. */
+#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) || \
+ defined(MEMORY_SANITIZER)
+/* Consider we have an unaligned load/store of 4 bytes from address 0x...05.
+ AddressSanitizer will treat it as a 3-byte access to the range 05:07 and
+ will miss a bug if 08 is the first unaddressable byte.
+ ThreadSanitizer will also treat this as a 3-byte access to 05:07 and will
+ miss a race between this access and some other accesses to 08.
+ MemorySanitizer will correctly propagate the shadow on unaligned stores
+ and correctly report bugs on unaligned loads, but it may not properly
+ update and report the origin of the uninitialized memory.
+ For all three tools, replacing an unaligned access with a tool-specific
+ callback solves the problem. */
+#if defined(__cplusplus)
+extern "C" {
+#endif /* __cplusplus */
+ uint16_t __sanitizer_unaligned_load16(const void* p);
+ uint32_t __sanitizer_unaligned_load32(const void* p);
+ uint64_t __sanitizer_unaligned_load64(const void* p);
+ void __sanitizer_unaligned_store64(void* p, uint64_t v);
+#if defined(__cplusplus)
+} /* extern "C" */
+#endif /* __cplusplus */
+#define BrotliUnalignedRead16 __sanitizer_unaligned_load16
+#define BrotliUnalignedRead32 __sanitizer_unaligned_load32
+#define BrotliUnalignedRead64 __sanitizer_unaligned_load64
+#define BrotliUnalignedWrite64 __sanitizer_unaligned_store64
+#else
+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 BROTLI_ALIGNED(1) uint64_t brotli_unaligned_uint64_t;
+
+static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {
+ return (uint64_t) ((brotli_unaligned_uint64_t*) p)[0];
+}
+static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
+ brotli_unaligned_uint64_t* dwords = (brotli_unaligned_uint64_t*) p;
+ dwords[0] = (brotli_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 /* ASAN / TSAN / MSAN */
+#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_ */