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

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Add convenient functions for endian-aware reads/writes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231002 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rui Ueyama 2015-03-02 20:00:15 +00:00
parent 7f9bc0986b
commit 955419ebf0
1 changed files with 17 additions and 1 deletions
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18
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