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/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef WABT_CONFIG_H_
#define WABT_CONFIG_H_
#include <stdint.h>
#include <stdlib.h>
#cmakedefine WABT_VERSION_STRING "@WABT_VERSION_STRING@"
#cmakedefine WABT_DEBUG @WABT_DEBUG@
/* TODO(binji): nice way to define these with WABT_ prefix? */
/* Whether <alloca.h> is available */
#cmakedefine01 HAVE_ALLOCA_H
/* Whether <unistd.h> is available */
#cmakedefine01 HAVE_UNISTD_H
/* Whether snprintf is defined by stdio.h */
#cmakedefine01 HAVE_SNPRINTF
/* Whether ssize_t is defined by stddef.h */
#cmakedefine01 HAVE_SSIZE_T
/* Whether strcasecmp is defined by strings.h */
#cmakedefine01 HAVE_STRCASECMP
/* Whether ENABLE_VIRTUAL_TERMINAL_PROCESSING is defined by windows.h */
#cmakedefine01 HAVE_WIN32_VT100
/* Whether the target architecture is big endian */
#cmakedefine01 WABT_BIG_ENDIAN
/* Whether <openssl/sha.h> is available */
#cmakedefine01 HAVE_OPENSSL_SHA_H
#cmakedefine01 COMPILER_IS_CLANG
#cmakedefine01 COMPILER_IS_GNU
#cmakedefine01 COMPILER_IS_MSVC
#cmakedefine01 WITH_EXCEPTIONS
#define SIZEOF_SIZE_T @SIZEOF_SIZE_T@
#if HAVE_ALLOCA_H
#include <alloca.h>
#elif COMPILER_IS_MSVC
#include <malloc.h>
#define alloca _alloca
#elif defined(__MINGW32__)
#include <malloc.h>
#endif
#if COMPILER_IS_CLANG || COMPILER_IS_GNU
#define WABT_UNLIKELY(x) __builtin_expect(!!(x), 0)
#define WABT_LIKELY(x) __builtin_expect(!!(x), 1)
#define WABT_VECTORCALL
#if __MINGW32__
// mingw defaults to printf format specifier being ms_printf (which doesn't
// understand 'llu', etc.) We always want gnu_printf, and force mingw to always
// use mingw_printf, mingw_vprintf, etc.
#define WABT_PRINTF_FORMAT(format_arg, first_arg) \
__attribute__((format(gnu_printf, (format_arg), (first_arg))))
#else
#define WABT_PRINTF_FORMAT(format_arg, first_arg) \
__attribute__((format(printf, (format_arg), (first_arg))))
#endif
#ifdef __cplusplus
#define WABT_STATIC_ASSERT(x) static_assert((x), #x)
#else
#define WABT_STATIC_ASSERT(x) _Static_assert((x), #x)
#endif
#elif COMPILER_IS_MSVC
#include <intrin.h>
#include <string.h>
#define WABT_STATIC_ASSERT(x) _STATIC_ASSERT(x)
#define WABT_UNLIKELY(x) (x)
#define WABT_LIKELY(x) (x)
#define WABT_PRINTF_FORMAT(format_arg, first_arg)
#define WABT_VECTORCALL __vectorcall
#else
#error unknown compiler
#endif
#define WABT_UNREACHABLE abort()
#ifdef __cplusplus
namespace wabt {
#if COMPILER_IS_CLANG || COMPILER_IS_GNU
inline int Clz(unsigned x) { return x ? __builtin_clz(x) : sizeof(x) * 8; }
inline int Clz(unsigned long x) { return x ? __builtin_clzl(x) : sizeof(x) * 8; }
inline int Clz(unsigned long long x) { return x ? __builtin_clzll(x) : sizeof(x) * 8; }
inline int Ctz(unsigned x) { return x ? __builtin_ctz(x) : sizeof(x) * 8; }
inline int Ctz(unsigned long x) { return x ? __builtin_ctzl(x) : sizeof(x) * 8; }
inline int Ctz(unsigned long long x) { return x ? __builtin_ctzll(x) : sizeof(x) * 8; }
inline int Popcount(uint8_t x) { return __builtin_popcount(x); }
inline int Popcount(unsigned x) { return __builtin_popcount(x); }
inline int Popcount(unsigned long x) { return __builtin_popcountl(x); }
inline int Popcount(unsigned long long x) { return __builtin_popcountll(x); }
#elif COMPILER_IS_MSVC
#if _M_IX86
inline unsigned long LowDword(unsigned __int64 value) {
return (unsigned long)value;
}
inline unsigned long HighDword(unsigned __int64 value) {
unsigned long high;
memcpy(&high, (unsigned char*)&value + sizeof(high), sizeof(high));
return high;
}
#endif
inline int Clz(unsigned long mask) {
if (mask == 0)
return 32;
unsigned long index;
_BitScanReverse(&index, mask);
return sizeof(unsigned long) * 8 - (index + 1);
}
inline int Clz(unsigned int mask) {
return Clz((unsigned long)mask);
}
inline int Clz(unsigned __int64 mask) {
#if _M_X64 || _M_ARM64
if (mask == 0)
return 64;
unsigned long index;
_BitScanReverse64(&index, mask);
return sizeof(unsigned __int64) * 8 - (index + 1);
#elif _M_IX86
int result = Clz(HighDword(mask));
if (result == 32)
result += Clz(LowDword(mask));
return result;
#else
#error unexpected architecture
#endif
}
inline int Ctz(unsigned long mask) {
if (mask == 0)
return 32;
unsigned long index;
_BitScanForward(&index, mask);
return index;
}
inline int Ctz(unsigned int mask) {
return Ctz((unsigned long)mask);
}
inline int Ctz(unsigned __int64 mask) {
#if _M_X64 || _M_ARM64
if (mask == 0)
return 64;
unsigned long index;
_BitScanForward64(&index, mask);
return index;
#elif _M_IX86
int result = Ctz(LowDword(mask));
if (result == 32)
result += Ctz(HighDword(mask));
return result;
#else
#error unexpected architecture
#endif
}
#if _M_ARM64
template <typename T>
int BrianKernighanPopcount(T value) {
int count;
for(count = 0; value; count++)
{
value &= value - 1;
}
return count;
}
#endif
inline int Popcount(unsigned long value) {
#if _M_X64 || _M_IX86
return __popcnt(value);
#elif _M_ARM64
return BrianKernighanPopcount(value);
#else
#error unexpected architecture
#endif
}
inline int Popcount(uint8_t value) {
return Popcount((unsigned long)value);
}
inline int Popcount(unsigned int value) {
return Popcount((unsigned long)value);
}
inline int Popcount(unsigned __int64 value) {
#if _M_X64
return __popcnt64(value);
#elif _M_IX86
return Popcount(HighDword(value)) + Popcount(LowDword(value));
#elif _M_ARM64
return BrianKernighanPopcount(value);
#else
#error unexpected architecture
#endif
}
#else
#error unknown compiler
#endif
} // namespace wabt
#if COMPILER_IS_MSVC
/* print format specifier for size_t */
#if SIZEOF_SIZE_T == 4
#define PRIzd "d"
#define PRIzx "x"
#elif SIZEOF_SIZE_T == 8
#define PRIzd "I64d"
#define PRIzx "I64x"
#else
#error "weird sizeof size_t"
#endif
#elif COMPILER_IS_CLANG || COMPILER_IS_GNU
/* print format specifier for size_t */
#define PRIzd "zd"
#define PRIzx "zx"
#else
#error unknown compiler
#endif
#if HAVE_SNPRINTF
#define wabt_snprintf snprintf
#elif COMPILER_IS_MSVC
/* can't just use _snprintf because it doesn't always null terminate */
#include <cstdarg>
int wabt_snprintf(char* str, size_t size, const char* format, ...);
#else
#error no snprintf
#endif
#if COMPILER_IS_MSVC
/* can't just use vsnprintf because it doesn't always null terminate */
int wabt_vsnprintf(char* str, size_t size, const char* format, va_list ap);
#else
#define wabt_vsnprintf vsnprintf
#endif
#if !HAVE_SSIZE_T
#if COMPILER_IS_MSVC
/* define ssize_t identically to how LLVM does, to avoid conflicts if including both */
#if defined(_WIN64)
typedef signed __int64 ssize_t;
#else
typedef signed int ssize_t;
#endif /* _WIN64 */
#else
typedef long ssize_t;
#endif
#endif
#if !HAVE_STRCASECMP
#if COMPILER_IS_MSVC
#define strcasecmp _stricmp
#else
#error no strcasecmp
#endif
#endif
double wabt_convert_uint64_to_double(uint64_t x);
float wabt_convert_uint64_to_float(uint64_t x);
double wabt_convert_int64_to_double(int64_t x);
float wabt_convert_int64_to_float(int64_t x);
#endif // __cplusplus
#endif /* WABT_CONFIG_H_ */