C++ (Cpp) P_DEF64 Examples

Example #1

File: decode.c Project: benbenbenbenbenben/Easyhook

static int
resolve_mode( struct ud* u )
{
  /* if in error state, bail out */
  if ( u->error ) return -1; 

  /* propagate prefix effects */
  if ( u->dis_mode == 64 ) {  /* set 64bit-mode flags */

    /* Check validity of  instruction m64 */
    if ( P_INV64( u->itab_entry->prefix ) ) {
        u->error = 1;
        return -1;
    }

    /* effective rex prefix is the  effective mask for the 
     * instruction hard-coded in the opcode map.
     */
    u->pfx_rex = ( u->pfx_rex & 0x40 ) | 
                 ( u->pfx_rex & REX_PFX_MASK( u->itab_entry->prefix ) ); 

    /* whether this instruction has a default operand size of 
     * 64bit, also hardcoded into the opcode map.
     */
    u->default64 = P_DEF64( u->itab_entry->prefix ); 
    /* calculate effective operand size */
    if ( REX_W( u->pfx_rex ) ) {
        u->opr_mode = 64;
    } else if ( u->pfx_opr ) {
        u->opr_mode = 16;
    } else {
        /* unless the default opr size of instruction is 64,
         * the effective operand size in the absence of rex.w
         * prefix is 32.
         */
        u->opr_mode = ( u->default64 ) ? 64 : 32;
    }

    /* calculate effective address size */
    u->adr_mode = (u->pfx_adr) ? 32 : 64;
  } else if ( u->dis_mode == 32 ) { /* set 32bit-mode flags */
    u->opr_mode = ( u->pfx_opr ) ? 16 : 32;
    u->adr_mode = ( u->pfx_adr ) ? 16 : 32;
  } else if ( u->dis_mode == 16 ) { /* set 16bit-mode flags */
    u->opr_mode = ( u->pfx_opr ) ? 32 : 16;
    u->adr_mode = ( u->pfx_adr ) ? 32 : 16;
  }

  /* These flags determine which operand to apply the operand size
   * cast to.
   */
  u->c1 = ( P_C1( u->itab_entry->prefix ) ) ? 1 : 0;
  u->c2 = ( P_C2( u->itab_entry->prefix ) ) ? 1 : 0;
  u->c3 = ( P_C3( u->itab_entry->prefix ) ) ? 1 : 0;

  /* set flags for implicit addressing */
  u->implicit_addr = P_IMPADDR( u->itab_entry->prefix );

  return 0;
}

Example #2

File: decode.c Project: FrodeSolheim/fs-uae

static int
resolve_mode( struct ud* u )
{
  int default64;
  /* if in error state, bail out */
  if ( u->error ) return -1; 

  /* propagate prefix effects */
  if ( u->dis_mode == 64 ) {  /* set 64bit-mode flags */

    /* Check validity of  instruction m64 */
    if ( P_INV64( u->itab_entry->prefix ) ) {
      UDERR(u, "instruction invalid in 64bits\n");
      return -1;
    }

    /* effective rex prefix is the  effective mask for the 
     * instruction hard-coded in the opcode map.
     */
    u->pfx_rex = ( u->pfx_rex & 0x40 ) | 
                 ( u->pfx_rex & REX_PFX_MASK( u->itab_entry->prefix ) ); 

    /* whether this instruction has a default operand size of 
     * 64bit, also hardcoded into the opcode map.
     */
    default64 = P_DEF64( u->itab_entry->prefix ); 
    /* calculate effective operand size */
    if ( REX_W( u->pfx_rex ) ) {
        u->opr_mode = 64;
    } else if ( u->pfx_opr ) {
        u->opr_mode = 16;
    } else {
        /* unless the default opr size of instruction is 64,
         * the effective operand size in the absence of rex.w
         * prefix is 32.
         */
        u->opr_mode = default64 ? 64 : 32;
    }

    /* calculate effective address size */
    u->adr_mode = (u->pfx_adr) ? 32 : 64;
  } else if ( u->dis_mode == 32 ) { /* set 32bit-mode flags */
    u->opr_mode = ( u->pfx_opr ) ? 16 : 32;
    u->adr_mode = ( u->pfx_adr ) ? 16 : 32;
  } else if ( u->dis_mode == 16 ) { /* set 16bit-mode flags */
    u->opr_mode = ( u->pfx_opr ) ? 32 : 16;
    u->adr_mode = ( u->pfx_adr ) ? 32 : 16;
  }

  return 0;
}