sim/mips/vr4320.igen

   1
   2
   3 // Integer Instructions
   4 // --------------------
   5 //
   6 // MulAcc is the Multiply Accumulator.
   7 //     This register is mapped on the the HI and LO registers.
   8 //     Upper 32 bits of MulAcc is mapped on to lower 32 bits of HI register.
   9 //     Lower 32 bits of MulAcc is mapped on to lower 32 bits of LO register.
  10
  11
  12 :function:::unsigned64:MulAcc:
  13 {
  14   unsigned64 result = U8_4 (HI, LO);
  15   return result;
  16 }
  17
  18 :function:::void:SET_MulAcc:unsigned64 value
  19 {
  20   *AL4_8 (&HI) = VH4_8 (value);
  21   *AL4_8 (&LO) = VL4_8 (value);
  22 }
  23
  24 :function:::signed64:SignedMultiply:signed32 l, signed32 r
  25 {
  26   signed64 result = (signed64) l * (signed64) r;
  27   return result;
  28 }
  29
  30 :function:::unsigned64:UnsignedMultiply:unsigned32 l, unsigned32 r
  31 {
  32   unsigned64 result = (unsigned64) l * (unsigned64) r;
  33   return result;
  34 }
  35
  36 :function:::unsigned64:Low32Bits:unsigned64 value
  37 {
  38   unsigned64 result = (signed64) (signed32) VL4_8 (value);
  39   return result;
  40 }
  41
  42 :function:::unsigned64:High32Bits:unsigned64 value
  43 {
  44   unsigned64 result = (signed64) (signed32) VH4_8 (value);
  45   return result;
  46 }
  47
  48
  49
  50 // Multiply and Move LO.
  51 000000,5.RS,5.RT,5.RD,00100,101000::::MUL
  52 "mul r<RD>, r<RS>, r<RT>"
  53 *mipsI,mipsII,mipsIII,mipsIV:
  54 {
  55   SET_MulAcc (SD_, 0 + SignedMultiply (SD_, GPR[RS], GPR[RT]));
  56   GPR[RD] = Low32Bits (SD_, MulAcc (SD_));
  57 }
  58
  59 // Unsigned Multiply and Move LO.
  60 000000,5.RS,5.RT,5.RD,00101,101000::::MULU
  61 "mulu r<RD>, r<RS>, r<RT>"
  62 *mipsI,mipsII,mipsIII,mipsIV:
  63 {
  64   SET_MulAcc (SD_, 0 + UnsignedMultiply (SD_, GPR[RS], GPR[RT]));
  65   GPR[RD] = Low32Bits  (SD_, MulAcc (SD_));
  66 }
  67
  68 // Multiply and Move HI.
  69 000000,5.RS,5.RT,5.RD,01100,101000::::MULHI
  70 "mulhi r<RD>, r<RS>, r<RT>"
  71 *mipsI,mipsII,mipsIII,mipsIV:
  72 {
  73   SET_MulAcc (SD_, 0 + SignedMultiply   (SD_, GPR[RS], GPR[RT]));
  74   GPR[RD] = High32Bits (SD_, MulAcc (SD_));
  75 }
  76
  77 // Unsigned Multiply and Move HI.
  78 000000,5.RS,5.RT,5.RD,01101,101000::::MULHIU
  79 "mulhiu r<RD>, r<RS>, r<RT>"
  80 *mipsI,mipsII,mipsIII,mipsIV:
  81 {
  82   SET_MulAcc (SD_, 0 + UnsignedMultiply (SD_, GPR[RS], GPR[RT]));
  83   GPR[RD] = High32Bits (SD_, MulAcc (SD_));
  84 }
  85
  86
  87 // Multiply, Accumulate
  88 000000,5.RS,5.RT,00000,00000,101000::::MAC
  89 "mac r<RS>, r<RT>"
  90 *vr4320:
  91 {
  92   SET_MulAcc (SD_, MulAcc (SD_) + SignedMultiply (SD_, GPR[RS], GPR[RT]));
  93 }
  94
  95 // D-Multiply, Accumulate
  96 000000,5.RS,5.RT,00000,00000,101001::::DMAC
  97 "dmac r<RS>, r<RT>"
  98 *mipsI,mipsII,mipsIII,mipsIV:
  99 {
 100   LO = MulAcc (SD_) + SignedMultiply (SD_, GPR[RS], GPR[RT]);
 101 }
 102
 103 // Multiply, Accumulate and Move LO.
 104 000000,5.RS,5.RT,5.RD,00010,101000::::MACC
 105 "macc r<RD>, r<RS>, r<RT>"
 106 *mipsI,mipsII,mipsIII,mipsIV:
 107 {
 108   SET_MulAcc (SD_, MulAcc (SD_) + SignedMultiply (SD_, GPR[RS], GPR[RT]));
 109   GPR[RD] = Low32Bits  (SD_, MulAcc (SD_));
 110 }
 111
 112 // Unsigned Multiply, Accumulate and Move LO.
 113 000000,5.RS,5.RT,5.RD,00011,101000::::MACCU
 114 "maccu r<RD>, r<RS>, r<RT>"
 115 *mipsI,mipsII,mipsIII,mipsIV:
 116 {
 117   SET_MulAcc (SD_, MulAcc (SD_) + UnsignedMultiply (SD_, GPR[RS], GPR[RT]));
 118   GPR[RD] = Low32Bits  (SD_, MulAcc (SD_));
 119 }
 120
 121 // Multiply, Accumulate and Move HI.
 122 000000,5.RS,5.RT,5.RD,01010,101000::::MACCHI
 123 "macchi r<RD>, r<RS>, r<RT>"
 124 *mipsI,mipsII,mipsIII,mipsIV:
 125 {
 126   SET_MulAcc (SD_, MulAcc (SD_) + SignedMultiply (SD_, GPR[RS], GPR[RT]));
 127   GPR[RD] = High32Bits (SD_, MulAcc (SD_));
 128 }
 129
 130 // Unsigned Multiply, Accumulate and Move HI.
 131 000000,5.RS,5.RT,5.RD,01011,101000::::MACCHIU
 132 "macchiu r<RD>, r<RS>, r<RT>"
 133 *mipsI,mipsII,mipsIII,mipsIV:
 134 {
 135   SET_MulAcc (SD_, MulAcc (SD_) + UnsignedMultiply (SD_, GPR[RS], GPR[RT]));
 136   GPR[RD] = High32Bits (SD_, MulAcc (SD_));
 137
 138 }
 139