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Diffstat (limited to 'lib/Bytecode/Writer/WriterPrimitives.h')
| -rw-r--r-- | lib/Bytecode/Writer/WriterPrimitives.h | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/lib/Bytecode/Writer/WriterPrimitives.h b/lib/Bytecode/Writer/WriterPrimitives.h deleted file mode 100644 index c62d6cc281..0000000000 --- a/lib/Bytecode/Writer/WriterPrimitives.h +++ /dev/null @@ -1,141 +0,0 @@ -//===-- WriterPrimitives.h - Bytecode writer file format prims --*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This header defines some basic functions for writing basic primitive types to -// a bytecode stream. -// -//===----------------------------------------------------------------------===// - -#ifndef WRITERPRIMITIVES_H -#define WRITERPRIMITIVES_H - -#include "Support/DataTypes.h" -#include <string> -#include <deque> - -namespace llvm { - -// output - If a position is specified, it must be in the valid portion of the -// string... note that this should be inlined always so only the relevant IF -// body should be included... -// -static inline void output(unsigned i, std::deque<unsigned char> &Out, - int pos = -1) { - if (pos == -1) { // Be endian clean, little endian is our friend - Out.push_back((unsigned char)i); - Out.push_back((unsigned char)(i >> 8)); - Out.push_back((unsigned char)(i >> 16)); - Out.push_back((unsigned char)(i >> 24)); - } else { - Out[pos ] = (unsigned char)i; - Out[pos+1] = (unsigned char)(i >> 8); - Out[pos+2] = (unsigned char)(i >> 16); - Out[pos+3] = (unsigned char)(i >> 24); - } -} - -static inline void output(int i, std::deque<unsigned char> &Out) { - output((unsigned)i, Out); -} - -// output_vbr - Output an unsigned value, by using the least number of bytes -// possible. This is useful because many of our "infinite" values are really -// very small most of the time... but can be large a few times... -// -// Data format used: If you read a byte with the night bit set, use the low -// seven bits as data and then read another byte... -// -// Note that using this may cause the output buffer to become unaligned... -// -static inline void output_vbr(uint64_t i, std::deque<unsigned char> &out) { - while (1) { - if (i < 0x80) { // done? - out.push_back((unsigned char)i); // We know the high bit is clear... - return; - } - - // Nope, we are bigger than a character, output the next 7 bits and set the - // high bit to say that there is more coming... - out.push_back(0x80 | ((unsigned char)i & 0x7F)); - i >>= 7; // Shift out 7 bits now... - } -} - -static inline void output_vbr(unsigned i, std::deque<unsigned char> &out) { - while (1) { - if (i < 0x80) { // done? - out.push_back((unsigned char)i); // We know the high bit is clear... - return; - } - - // Nope, we are bigger than a character, output the next 7 bits and set the - // high bit to say that there is more coming... - out.push_back(0x80 | ((unsigned char)i & 0x7F)); - i >>= 7; // Shift out 7 bits now... - } -} - -static inline void output_vbr(int64_t i, std::deque<unsigned char> &out) { - if (i < 0) - output_vbr(((uint64_t)(-i) << 1) | 1, out); // Set low order sign bit... - else - output_vbr((uint64_t)i << 1, out); // Low order bit is clear. -} - - -static inline void output_vbr(int i, std::deque<unsigned char> &out) { - if (i < 0) - output_vbr(((unsigned)(-i) << 1) | 1, out); // Set low order sign bit... - else - output_vbr((unsigned)i << 1, out); // Low order bit is clear. -} - -// align32 - emit the minimal number of bytes that will bring us to 32 bit -// alignment... -// -static inline void align32(std::deque<unsigned char> &Out) { - int NumPads = (4-(Out.size() & 3)) & 3; // Bytes to get padding to 32 bits - while (NumPads--) Out.push_back((unsigned char)0xAB); -} - -static inline void output(const std::string &s, std::deque<unsigned char> &Out, - bool Aligned = true) { - unsigned Len = s.length(); - output_vbr(Len, Out); // Strings may have an arbitrary length... - Out.insert(Out.end(), s.begin(), s.end()); - - if (Aligned) - align32(Out); // Make sure we are now aligned... -} - -static inline void output_data(const void *Ptr, const void *End, - std::deque<unsigned char> &Out) { - Out.insert(Out.end(), (const unsigned char*)Ptr, (const unsigned char*)End); -} - -static inline void output_float(float& FloatVal, - std::deque<unsigned char>& Out) { - /// FIXME: This is a broken implementation! It writes - /// it in a platform-specific endianess. Need to make - /// it little endian always. - output_data(&FloatVal, &FloatVal+1, Out); -} - -static inline void output_double(double& DoubleVal, - std::deque<unsigned char>& Out) { - /// FIXME: This is a broken implementation! It writes - /// it in a platform-specific endianess. Need to make - /// it little endian always. - output_data(&DoubleVal, &DoubleVal+1, Out); -} - -} // End llvm namespace - -// vim: sw=2 ai -#endif |