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v3.14.2
PC/zbuild.h
343 строки
11 KB
Steve Dower
gh-91349: Replace zlib with zlib-ng in Windows build (GH-131438)
19 мар 2025, 22:03
Не верифицирован
19 мар 2025, 22:03
63a638c
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#ifndef _ZBUILD_H #define _ZBUILD_H #define _POSIX_SOURCE 1 /* fileno */ #ifndef _POSIX_C_SOURCE # define _POSIX_C_SOURCE 200809L /* snprintf, posix_memalign, strdup */ #endif #ifndef _ISOC11_SOURCE # define _ISOC11_SOURCE 1 /* aligned_alloc */ #endif #ifdef __OpenBSD__ # define _BSD_SOURCE 1 #endif #include <stddef.h> #include <string.h> #include <stdlib.h> #include <stdint.h> /* Determine compiler version of C Standard */ #ifdef __STDC_VERSION__ # if __STDC_VERSION__ >= 199901L # ifndef STDC99 # define STDC99 # endif # endif # if __STDC_VERSION__ >= 201112L # ifndef STDC11 # define STDC11 # endif # endif #endif #ifndef Z_HAS_ATTRIBUTE # if defined(__has_attribute) # define Z_HAS_ATTRIBUTE(a) __has_attribute(a) # else # define Z_HAS_ATTRIBUTE(a) 0 # endif #endif #ifndef Z_FALLTHROUGH # if Z_HAS_ATTRIBUTE(__fallthrough__) || (defined(__GNUC__) && (__GNUC__ >= 7)) # define Z_FALLTHROUGH __attribute__((__fallthrough__)) # else # define Z_FALLTHROUGH do {} while(0) /* fallthrough */ # endif #endif #ifndef Z_TARGET # if Z_HAS_ATTRIBUTE(__target__) # define Z_TARGET(x) __attribute__((__target__(x))) # else # define Z_TARGET(x) # endif #endif /* This has to be first include that defines any types */ #if defined(_MSC_VER) # if defined(_WIN64) typedef __int64 ssize_t; # else typedef long ssize_t; # endif # if defined(_WIN64) #define SSIZE_MAX _I64_MAX # else #define SSIZE_MAX LONG_MAX # endif #endif /* MS Visual Studio does not allow inline in C, only C++. But it provides __inline instead, so use that. */ #if defined(_MSC_VER) && !defined(inline) && !defined(__cplusplus) # define inline __inline #endif #if defined(ZLIB_COMPAT) # define PREFIX(x) x # define PREFIX2(x) ZLIB_ ## x # define PREFIX3(x) z_ ## x # define PREFIX4(x) x ## 64 # define zVersion zlibVersion #else # define PREFIX(x) zng_ ## x # define PREFIX2(x) ZLIBNG_ ## x # define PREFIX3(x) zng_ ## x # define PREFIX4(x) zng_ ## x # define zVersion zlibng_version # define z_size_t size_t #endif /* In zlib-compat some functions and types use unsigned long, but zlib-ng use size_t */ #if defined(ZLIB_COMPAT) # define z_uintmax_t unsigned long #else # define z_uintmax_t size_t #endif /* Minimum of a and b. */ #define MIN(a, b) ((a) > (b) ? (b) : (a)) /* Maximum of a and b. */ #define MAX(a, b) ((a) < (b) ? (b) : (a)) /* Ignore unused variable warning */ #define Z_UNUSED(var) (void)(var) #if defined(HAVE_VISIBILITY_INTERNAL) # define Z_INTERNAL __attribute__((visibility ("internal"))) #elif defined(HAVE_VISIBILITY_HIDDEN) # define Z_INTERNAL __attribute__((visibility ("hidden"))) #else # define Z_INTERNAL #endif /* Symbol versioning helpers, allowing multiple versions of a function to exist. * Functions using this must also be added to zlib-ng.map for each version. * Double @@ means this is the default for newly compiled applications to link against. * Single @ means this is kept for backwards compatibility. * This is only used for Zlib-ng native API, and only on platforms supporting this. */ #if defined(HAVE_SYMVER) # define ZSYMVER(func,alias,ver) __asm__(".symver " func ", " alias "@ZLIB_NG_" ver); # define ZSYMVER_DEF(func,alias,ver) __asm__(".symver " func ", " alias "@@ZLIB_NG_" ver); #else # define ZSYMVER(func,alias,ver) # define ZSYMVER_DEF(func,alias,ver) #endif #ifndef __cplusplus # define Z_REGISTER register #else # define Z_REGISTER #endif /* Reverse the bytes in a value. Use compiler intrinsics when possible to take advantage of hardware implementations. */ #if defined(_MSC_VER) && (_MSC_VER >= 1300) # include <stdlib.h> # pragma intrinsic(_byteswap_ulong) # define ZSWAP16(q) _byteswap_ushort(q) # define ZSWAP32(q) _byteswap_ulong(q) # define ZSWAP64(q) _byteswap_uint64(q) #elif defined(__clang__) || (defined(__GNUC__) && \ (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) # define ZSWAP16(q) __builtin_bswap16(q) # define ZSWAP32(q) __builtin_bswap32(q) # define ZSWAP64(q) __builtin_bswap64(q) #elif defined(__GNUC__) && (__GNUC__ >= 2) && defined(__linux__) # include <byteswap.h> # define ZSWAP16(q) bswap_16(q) # define ZSWAP32(q) bswap_32(q) # define ZSWAP64(q) bswap_64(q) #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) # include <sys/endian.h> # define ZSWAP16(q) bswap16(q) # define ZSWAP32(q) bswap32(q) # define ZSWAP64(q) bswap64(q) #elif defined(__OpenBSD__) # include <sys/endian.h> # define ZSWAP16(q) swap16(q) # define ZSWAP32(q) swap32(q) # define ZSWAP64(q) swap64(q) #elif defined(__INTEL_COMPILER) /* ICC does not provide a two byte swap. */ # define ZSWAP16(q) ((((q) & 0xff) << 8) | (((q) & 0xff00) >> 8)) # define ZSWAP32(q) _bswap(q) # define ZSWAP64(q) _bswap64(q) #else # define ZSWAP16(q) ((((q) & 0xff) << 8) | (((q) & 0xff00) >> 8)) # define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) # define ZSWAP64(q) \ (((q & 0xFF00000000000000u) >> 56u) | \ ((q & 0x00FF000000000000u) >> 40u) | \ ((q & 0x0000FF0000000000u) >> 24u) | \ ((q & 0x000000FF00000000u) >> 8u) | \ ((q & 0x00000000FF000000u) << 8u) | \ ((q & 0x0000000000FF0000u) << 24u) | \ ((q & 0x000000000000FF00u) << 40u) | \ ((q & 0x00000000000000FFu) << 56u)) #endif /* Only enable likely/unlikely if the compiler is known to support it */ #if (defined(__GNUC__) && (__GNUC__ >= 3)) || defined(__INTEL_COMPILER) || defined(__clang__) # define LIKELY_NULL(x) __builtin_expect((x) != 0, 0) # define LIKELY(x) __builtin_expect(!!(x), 1) # define UNLIKELY(x) __builtin_expect(!!(x), 0) #else # define LIKELY_NULL(x) x # define LIKELY(x) x # define UNLIKELY(x) x #endif /* (un)likely */ #if defined(HAVE_ATTRIBUTE_ALIGNED) # define ALIGNED_(x) __attribute__ ((aligned(x))) #elif defined(_MSC_VER) # define ALIGNED_(x) __declspec(align(x)) #else /* TODO: Define ALIGNED_ for your compiler */ # define ALIGNED_(x) #endif #ifdef HAVE_BUILTIN_ASSUME_ALIGNED # define HINT_ALIGNED(p,n) __builtin_assume_aligned((void *)(p),(n)) #else # define HINT_ALIGNED(p,n) (p) #endif #define HINT_ALIGNED_16(p) HINT_ALIGNED((p),16) #define HINT_ALIGNED_64(p) HINT_ALIGNED((p),64) #define HINT_ALIGNED_4096(p) HINT_ALIGNED((p),4096) /* PADSZ returns needed bytes to pad bpos to pad size * PAD_NN calculates pad size and adds it to bpos, returning the result. * All take an integer or a pointer as bpos input. */ #define PADSZ(bpos, pad) (((pad) - ((uintptr_t)(bpos) % (pad))) % (pad)) #define PAD_16(bpos) ((bpos) + PADSZ((bpos),16)) #define PAD_64(bpos) ((bpos) + PADSZ((bpos),64)) #define PAD_4096(bpos) ((bpos) + PADSZ((bpos),4096)) /* Diagnostic functions */ #ifdef ZLIB_DEBUG # include <stdio.h> extern int Z_INTERNAL z_verbose; extern void Z_INTERNAL z_error(const char *m); # define Assert(cond, msg) {int _cond = (cond); if (!_cond) z_error(msg);} # define Trace(x) {if (z_verbose >= 0) fprintf x;} # define Tracev(x) {if (z_verbose > 0) fprintf x;} # define Tracevv(x) {if (z_verbose > 1) fprintf x;} # define Tracec(c, x) {if (z_verbose > 0 && (c)) fprintf x;} # define Tracecv(c, x) {if (z_verbose > 1 && (c)) fprintf x;} #else # define Assert(cond, msg) # define Trace(x) # define Tracev(x) # define Tracevv(x) # define Tracec(c, x) # define Tracecv(c, x) #endif /* OPTIMAL_CMP values determine the comparison width: * 64: Best for 64-bit architectures with unaligned access * 32: Best for 32-bit architectures with unaligned access * 16: Safe default for unknown architectures * 8: Safe fallback for architectures without unaligned access * Note: The unaligned access mentioned is cpu-support, this allows compiler or * separate unaligned intrinsics to utilize safe unaligned access, without * utilizing unaligned C pointers that are known to have undefined behavior. */ #if !defined(OPTIMAL_CMP) # if defined(__x86_64__) || defined(_M_X64) || defined(__amd64__) || defined(_M_AMD64) # define OPTIMAL_CMP 64 # elif defined(__i386__) || defined(__i486__) || defined(__i586__) || \ defined(__i686__) || defined(_X86_) || defined(_M_IX86) # define OPTIMAL_CMP 32 # elif defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC) # if defined(__ARM_FEATURE_UNALIGNED) || defined(_WIN32) # define OPTIMAL_CMP 64 # else # define OPTIMAL_CMP 8 # endif # elif defined(__arm__) || defined(_M_ARM) # if defined(__ARM_FEATURE_UNALIGNED) || defined(_WIN32) # define OPTIMAL_CMP 32 # else # define OPTIMAL_CMP 8 # endif # elif defined(__powerpc64__) || defined(__ppc64__) # define OPTIMAL_CMP 64 # elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__) # define OPTIMAL_CMP 32 # endif #endif #if !defined(OPTIMAL_CMP) # define OPTIMAL_CMP 16 #endif #if defined(__has_feature) # if __has_feature(address_sanitizer) # define Z_ADDRESS_SANITIZER 1 # endif #elif defined(__SANITIZE_ADDRESS__) # define Z_ADDRESS_SANITIZER 1 #endif /* * __asan_loadN() and __asan_storeN() calls are inserted by compilers in order to check memory accesses. * They can be called manually too, with the following caveats: * gcc says: "warning: implicit declaration of function '...'" * g++ says: "error: new declaration '...' ambiguates built-in declaration '...'" * Accommodate both. */ #ifdef Z_ADDRESS_SANITIZER #ifndef __cplusplus void __asan_loadN(void *, long); void __asan_storeN(void *, long); #endif #else # define __asan_loadN(a, size) do { Z_UNUSED(a); Z_UNUSED(size); } while (0) # define __asan_storeN(a, size) do { Z_UNUSED(a); Z_UNUSED(size); } while (0) #endif #if defined(__has_feature) # if __has_feature(memory_sanitizer) # define Z_MEMORY_SANITIZER 1 # include <sanitizer/msan_interface.h> # endif #endif #ifndef Z_MEMORY_SANITIZER # define __msan_check_mem_is_initialized(a, size) do { Z_UNUSED(a); Z_UNUSED(size); } while (0) # define __msan_unpoison(a, size) do { Z_UNUSED(a); Z_UNUSED(size); } while (0) #endif /* Notify sanitizer runtime about an upcoming read access. */ #define instrument_read(a, size) do { \ void *__a = (void *)(a); \ long __size = size; \ __asan_loadN(__a, __size); \ __msan_check_mem_is_initialized(__a, __size); \ } while (0) /* Notify sanitizer runtime about an upcoming write access. */ #define instrument_write(a, size) do { \ void *__a = (void *)(a); \ long __size = size; \ __asan_storeN(__a, __size); \ } while (0) /* Notify sanitizer runtime about an upcoming read/write access. */ #define instrument_read_write(a, size) do { \ void *__a = (void *)(a); \ long __size = size; \ __asan_storeN(__a, __size); \ __msan_check_mem_is_initialized(__a, __size); \ } while (0) #endif