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Add support to write and read a fixed amount of raw data

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llvm-svn: 186
This commit is contained in:
Chris Lattner 2001-07-15 00:16:22 +00:00
parent 0ee911dbbc
commit 82e8e54a80
1 changed files with 31 additions and 0 deletions
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31
include/llvm/Bytecode/Primitives.h
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@ -130,6 +130,24 @@ static inline bool read(const unsigned char *&Buf, const unsigned char *EndBuf,
return false;
}
static inline bool input_data(const unsigned char *&Buf,
const unsigned char *EndBuf,
void *Ptr, void *End, bool Align = false) {
unsigned char *Start = (unsigned char *)Ptr;
unsigned Amount = (unsigned char *)End - Start;
if (Buf+Amount > EndBuf) return true;
#ifdef LITTLE_ENDIAN
copy(Buf, Buf+Amount, Start);
Buf += Amount;
#else
unsigned char *E = (unsigned char *)End;
while (Ptr != E)
*--E = *Buf++;
#endif
if (Align) return align32(Buf, EndBuf);
return false;
}
//===----------------------------------------------------------------------===//
// Writing Primitives
@ -234,4 +252,17 @@ static inline void output(const string &s, vector<unsigned char> &Out,
align32(Out); // Make sure we are now aligned...
}
static inline void output_data(void *Ptr, void *End,
vector<unsigned char> &Out, bool Align = false) {
#ifdef LITTLE_ENDIAN
Out.insert(Out.end(), (unsigned char*)Ptr, (unsigned char*)End);
#else
unsigned char *E = (unsigned char *)End;
while (Ptr != E)
Out.push_back(*--E);
#endif
if (Align) align32(Out);
}
#endif