C++ (Cpp) ORC_READ_UINT32_LE示例

示例#1

文件： orcx86.c 项目： danshapero/orc

void
orc_x86_do_fixups (OrcCompiler *compiler)
{
  int i;
  for(i=0;i<compiler->n_fixups;i++){
    if (compiler->fixups[i].type == 0) {
      unsigned char *label = compiler->labels[compiler->fixups[i].label];
      unsigned char *ptr = compiler->fixups[i].ptr;
      int diff;

      diff = ((orc_int8)ptr[0]) + (label - ptr);
      if (diff != (orc_int8)diff) {
        ORC_COMPILER_ERROR(compiler, "short jump too long");
      }

      ptr[0] = diff;
    } else if (compiler->fixups[i].type == 1) {
      unsigned char *label = compiler->labels[compiler->fixups[i].label];
      unsigned char *ptr = compiler->fixups[i].ptr;
      int diff;

      diff = ORC_READ_UINT32_LE (ptr) + (label - ptr);
      ORC_WRITE_UINT32_LE(ptr, diff);
    }
  }
}

示例#2

文件： orcmips.c 项目： Distrotech/orc

void
orc_mips_do_fixups (OrcCompiler *compiler)
{
  int i;
  for(i=0;i<compiler->n_fixups;i++){
    /* Type 0 of fixup is a branch label that could not be resolved at first
     * pass. We compute the offset, which should be the 16 least significant
     * bits of the instruction. */
    unsigned char *label = compiler->labels[compiler->fixups[i].label];
    unsigned char *ptr = compiler->fixups[i].ptr;
    orc_uint32 code;
    int offset;
    ORC_ASSERT (compiler->fixups[i].type == 0);
    offset = (label - (ptr + 4)) >> 2;
    code = ORC_READ_UINT32_LE (ptr);
    code |= offset & 0xffff;
    ORC_WRITE_UINT32_LE (ptr, code);
  }
}