sim/mips/tx.igen

   1 // -*- C -*-
   2 //
   3 // toshiba specific instructions.
   4 //
   5
   6 011100,5.RS,5.RT,5.RD,00000000000:MMINORM:::MADD
   7 "madd r<RS>, r<RT>":RD == 0
   8 "madd r<RD>, r<RS>, r<RT>"
   9 *r3900
  10 // start-sanitize-r5900
  11 *r5900:
  12 // end-sanitize-r5900
  13 {
  14   signed64 prod = (U8_4 (VL4_8 (HI), VL4_8 (LO))
  15                    + ((signed64) EXTEND32 (GPR[RT])
  16                       * (signed64) EXTEND32 (GPR[RS])));
  17   TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]);
  18   LO = EXTEND32 (prod);
  19   HI = EXTEND32 (VH4_8 (prod));
  20   TRACE_ALU_RESULT2 (HI, LO);
  21   if(RD != 0 )
  22     GPR[RD] = LO;
  23 }
  24
  25
  26 011100,5.RS,5.RT,5.RD,00000000001:MMINORM:::MADDU
  27 "maddu r<RS>, r<RT>":RD == 0
  28 "maddu r<RD>, r<RS>, r<RT>"
  29 *r3900
  30 // start-sanitize-r5900
  31 *r5900:
  32 // end-sanitize-r5900
  33 {
  34   unsigned64 prod = (U8_4 (VL4_8 (HI), VL4_8 (LO))
  35                      + ((unsigned64) VL4_8 (GPR[RS])
  36                         * (unsigned64) VL4_8 (GPR[RT])));
  37   TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]);
  38   LO = EXTEND32 (prod);
  39   HI = EXTEND32 (VH4_8 (prod));
  40   TRACE_ALU_RESULT2 (HI, LO);
  41   if(RD != 0)
  42     GPR[RD] = LO;
  43 }
  44
  45