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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [int_encoding.h] - Diff between revs 27 and 166

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Rev 27 Rev 166
Line 36... Line 36...
//
//
// LEB 128 encoding support.
// LEB 128 encoding support.
//
//
 
 
// Read a ULEB 128 encoded integer from BUFFER.  Return the length of the
// Read a ULEB 128 encoded integer from BUFFER.  Return the length of the
// encoded integer at the location PLEN. 
// encoded integer at the location PLEN.  The common case of a single-byte
 
// value is handled inline, and multi-byte values are processed by the _x
 
// routine, where BYTE is the first byte of the value.
 
 
uint64_t
uint64_t
read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen);
read_unsigned_LEB_128_x(const unsigned char* buffer, size_t* plen,
 
                        unsigned char byte);
 
 
 
inline uint64_t
 
read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen)
 
{
 
  unsigned char byte = *buffer++;
 
 
 
  if ((byte & 0x80) != 0)
 
    return read_unsigned_LEB_128_x(buffer, plen, byte);
 
 
 
  *plen = 1;
 
  return static_cast<uint64_t>(byte);
 
}
 
 
// Read an SLEB 128 encoded integer from BUFFER.  Return the length of the
// Read an SLEB 128 encoded integer from BUFFER.  Return the length of the
// encoded integer at the location PLEN. 
// encoded integer at the location PLEN.  The common case of a single-byte
 
// value is handled inline, and multi-byte values are processed by the _x
 
// routine, where BYTE is the first byte of the value.
 
 
int64_t
int64_t
read_signed_LEB_128(const unsigned char* buffer, size_t* plen);
read_signed_LEB_128_x(const unsigned char* buffer, size_t* plen,
 
                      unsigned char byte);
 
 
 
inline int64_t
 
read_signed_LEB_128(const unsigned char* buffer, size_t* plen)
 
{
 
  unsigned char byte = *buffer++;
 
 
 
  if ((byte & 0x80) != 0)
 
    return read_signed_LEB_128_x(buffer, plen, byte);
 
 
 
  *plen = 1;
 
  if (byte & 0x40)
 
    return -(static_cast<int64_t>(1) << 7) | static_cast<int64_t>(byte);
 
  return static_cast<int64_t>(byte);
 
}
 
 
// Write a ULEB 128 encoded VALUE to BUFFER.
// Write a ULEB 128 encoded VALUE to BUFFER.
 
 
void
void
write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value);
write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value);

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