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e2d1621e42
stdint.h is better compatible with freestanding support as it can be compiled even if target platform lacks I/O capabilities. [EB - adjusted the include locations, and avoided breaking the build for old MSVC versions.]
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
/*
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* compiler_msc.h - definitions for the Microsoft C Compiler
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*/
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#include <stdint.h>
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#include <stdlib.h> /* for _byteswap_*() */
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#define LIBEXPORT __declspec(dllexport)
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/*
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* Old versions (e.g. VS2010) of MSC don't have the C99 header stdbool.h.
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* Beware: the below replacement isn't fully standard, since normally any value
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* != 0 should be implicitly cast to a bool with value 1... but that doesn't
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* happen if bool is really just an 'int'.
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*/
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typedef int bool;
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#define true 1
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#define false 0
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#define __bool_true_false_are_defined 1
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/* Define ssize_t */
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#ifdef _WIN64
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typedef long long ssize_t;
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#else
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typedef int ssize_t;
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#endif
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/* Assume a little endian architecture with fast unaligned access */
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#define CPU_IS_LITTLE_ENDIAN() 1
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#define UNALIGNED_ACCESS_IS_FAST 1
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/* __restrict has nonstandard behavior; don't use it */
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#define restrict
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/* ... but we can use __inline and __forceinline */
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#define inline __inline
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#define forceinline __forceinline
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/* Byte swap functions */
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#define bswap16 _byteswap_ushort
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#define bswap32 _byteswap_ulong
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#define bswap64 _byteswap_uint64
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/* Bit scan functions (32-bit) */
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static forceinline unsigned
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bsr32(uint32_t n)
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{
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_BitScanReverse(&n, n);
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return n;
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}
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#define bsr32 bsr32
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static forceinline unsigned
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bsf32(uint32_t n)
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{
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_BitScanForward(&n, n);
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return n;
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}
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#define bsf32 bsf32
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#ifdef _M_X64 /* Bit scan functions (64-bit) */
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static forceinline unsigned
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bsr64(uint64_t n)
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{
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_BitScanReverse64(&n, n);
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return n;
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}
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#define bsr64 bsr64
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static forceinline unsigned
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bsf64(uint64_t n)
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{
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_BitScanForward64(&n, n);
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return n;
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}
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#define bsf64 bsf64
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#endif /* _M_X64 */
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