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Support: Add {read,write}{16,32,64}{le,be} functions. 

Add convenient functions for endian-aware reads/writes.

llvm-svn: 231002
This commit is contained in:
Rui Ueyama 2015-03-02 20:00:15 +00:00
parent c583abc888
commit cfa8f24ec3
1 changed files with 17 additions and 1 deletions
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18
llvm/include/llvm/Support/Endian.h
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@ -195,7 +195,23 @@ typedef detail::packed_endian_specific_integral
<int32_t, native, unaligned> unaligned_int32_t;
typedef detail::packed_endian_specific_integral
<int64_t, native, unaligned> unaligned_int64_t;
} // end namespace llvm
namespace endian {
inline uint16_t read16le(const void *p) { return *(ulittle16_t *)p; }
inline uint32_t read32le(const void *p) { return *(ulittle32_t *)p; }
inline uint64_t read64le(const void *p) { return *(ulittle64_t *)p; }
inline uint16_t read16be(const void *p) { return *(ubig16_t *)p; }
inline uint32_t read32be(const void *p) { return *(ubig32_t *)p; }
inline uint64_t read64be(const void *p) { return *(ubig64_t *)p; }
inline void write16le(void *p, uint16_t v) { *(ulittle16_t *)p = v; }
inline void write32le(void *p, uint32_t v) { *(ulittle32_t *)p = v; }
inline void write64le(void *p, uint64_t v) { *(ulittle64_t *)p = v; }
inline void write16be(void *p, uint16_t v) { *(ubig16_t *)p = v; }
inline void write32be(void *p, uint32_t v) { *(ubig32_t *)p = v; }
inline void write64be(void *p, uint64_t v) { *(ubig64_t *)p = v; }
} // end namespace endian
} // end namespace support
} // end namespace llvm
#endif