// -*- C -*-
//
//
// MIPS Architecture:
//
//        CPU Instruction Set (mips16)
//

// The instructions in this section are ordered according
// to http://www.sgi.com/MIPS/arch/MIPS16/mips16.pdf.


// The MIPS16 codes registers in a special way, map from one to the other.
// :<type>:<flags>:<models>:<typedef>:<name>:<field>:<expression>
:compute:::int:TRX:RX:((RX < 2) ? (16 + RX) \: RX)
:compute:::int:TRY:RY:((RY < 2) ? (16 + RY) \: RY)
:compute:::int:TRZ:RZ:((RZ < 2) ? (16 + RZ) \: RZ)
:compute:::int:SHIFT:SHAMT:((SHAMT == 0) ? 8 \: SHAMT)

:compute:::int:SHAMT:SHAMT_4_0,S5:(LSINSERTED (S5, 5, 5) | SHAMT_4_0)

:compute:::address_word:IMMEDIATE:IMM_25_21,IMM_20_16,IMMED_15_0:(LSINSERTED (IMM_25_21, 25, 21) | LSINSERTED (IMM_20_16, 20, 16) | LSINSERTED (IMMED_15_0, 15, 0))
:compute:::int:R32:R32L,R32H:((R32H << 3) | R32L)

:compute:::address_word:IMMEDIATE:IMM_10_5,IMM_15_11,IMM_4_0:(LSINSERTED (IMM_10_5, 10, 5) | LSINSERTED (IMM_15_11, 15, 11) | LSINSERTED (IMM_4_0, 4, 0))

:compute:::address_word:IMMEDIATE:IMM_10_4,IMM_14_11,IMM_3_0:(LSINSERTED (IMM_10_4, 10, 4) | LSINSERTED (IMM_14_11, 14, 11) | LSINSERTED (IMM_3_0, 3, 0))


// Load and Store Instructions


10000,3.RX,3.RY,5.IMMED:RRI:16::LB
"lb r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = EXTEND8 (do_load (SD_, AccessLength_BYTE, GPR[TRX], IMMED));
}

11110,6.IMM_10_5,5.IMM_15_11 + 10000,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LB
"lb r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = EXTEND8 (do_load (SD_, AccessLength_BYTE, GPR[TRX], EXTEND16 (IMMEDIATE)));
}



10100,3.RX,3.RY,5.IMMED:RRI:16::LBU
"lbu r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_BYTE, GPR[TRX], IMMED);
}

11110,6.IMM_10_5,5.IMM_15_11 + 10100,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LBU
"lbu r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_BYTE, GPR[TRX], EXTEND16 (IMMEDIATE));
}



10001,3.RX,3.RY,5.IMMED:RRI:16::LH
"lh r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = EXTEND16 (do_load (SD_, AccessLength_HALFWORD, GPR[TRX], IMMED << 1));
}

11110,6.IMM_10_5,5.IMM_15_11 + 10001,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LH
"lh r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = EXTEND16 (do_load (SD_, AccessLength_HALFWORD, GPR[TRX], EXTEND16 (IMMEDIATE)));
}



10101,3.RX,3.RY,5.IMMED:RRI:16::LHU
"lhu r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_HALFWORD, GPR[TRX], IMMED << 1);
}

11110,6.IMM_10_5,5.IMM_15_11 + 10101,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LHU
"lhu r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_HALFWORD, GPR[TRX], EXTEND16 (IMMEDIATE));
}



10011,3.RX,3.RY,5.IMMED:RRI:16::LW
"lw r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = EXTEND32 (do_load (SD_, AccessLength_WORD, GPR[TRX], IMMED << 2));
}

11110,6.IMM_10_5,5.IMM_15_11 + 10011,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LW
"lw r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = EXTEND32 (do_load (SD_, AccessLength_WORD, GPR[TRX], EXTEND16 (IMMEDIATE)));
}



10110,3.RX,8.IMMED:RI:16::LWPC
"lw r<TRX>, <IMMED> (PC)"
*mips16:
*vr4100:
{
  GPR[TRX] = EXTEND32 (do_load (SD_, AccessLength_WORD,
				basepc (SD_) & ~3, IMMED << 2));
}

11110,6.IMM_10_5,5.IMM_15_11 + 10110,3.RX,000,5.IMM_4_0:EXT-RI:16::LWPC
"lw r<TRX>, <IMMEDIATE> (PC)"
*mips16:
*vr4100:
{
  GPR[TRX] = EXTEND32 (do_load (SD_, AccessLength_WORD, basepc (SD_) & ~3, EXTEND16 (IMMEDIATE)));
}



10010,3.RX,8.IMMED:RI:16::LWSP
"lw r<TRX>, <IMMED> (SP)"
*mips16:
*vr4100:
{
  GPR[TRX] = EXTEND32 (do_load (SD_, AccessLength_WORD, SP, IMMED << 2));
}

11110,6.IMM_10_5,5.IMM_15_11 + 10010,3.RX,000,5.IMM_4_0:EXT-RI:16::LWSP
"lw r<TRX>, <IMMEDIATE> (SP)"
*mips16:
*vr4100:
{
  GPR[TRX] = EXTEND32 (do_load (SD_, AccessLength_WORD, SP, EXTEND16 (IMMEDIATE)));
}



10111,3.RX,3.RY,5.IMMED:RRI:16::LWU
"lwu r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_WORD, GPR[TRX], IMMED << 2);
}

11110,6.IMM_10_5,5.IMM_15_11 + 10111,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LWU
"lwu r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_WORD, GPR[TRX], EXTEND16 (IMMEDIATE));
}



00111,3.RX,3.RY,5.IMMED:RRI:16::LD
"ld r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_DOUBLEWORD, GPR[TRX], IMMED << 3);
}

11110,6.IMM_10_5,5.IMM_15_11 + 00111,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::LD
"ld r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_DOUBLEWORD, GPR[TRX], EXTEND16 (IMMEDIATE));
}



11111,100,3.RY,5.IMMED:RI64:16::LDPC
"ld r<TRY>, <IMMED> (PC)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_DOUBLEWORD,
		      basepc (SD_) & ~7, IMMED << 3);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,100,3.RY,5.IMM_4_0:EXT-RI64:16::LDPC
"ld r<TRY>, <IMMEDIATE> (PC)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_DOUBLEWORD, basepc (SD_) & ~7, EXTEND16 (IMMEDIATE));
}



11111,000,3.RY,5.IMMED:RI64:16::LDSP
"ld r<TRY>, <IMMED> (SP)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_DOUBLEWORD, SP, IMMED << 3);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,000,3.RY,5.IMM_4_0:EXT-RI64:16::LDSP
"ld r<TRY>, <IMMEDIATE> (SP)"
*mips16:
*vr4100:
{
  GPR[TRY] = do_load (SD_, AccessLength_DOUBLEWORD, SP, EXTEND16 (IMMEDIATE));
}



11000,3.RX,3.RY,5.IMMED:RRI:16::SB
"sb r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_BYTE, GPR[TRX], IMMED, GPR[TRY]);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11000,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::SB
"sb r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_BYTE, GPR[TRX], EXTEND16 (IMMEDIATE), GPR[TRY]);
}



11001,3.RX,3.RY,5.IMMED:RRI:16::SH
"sh r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_HALFWORD, GPR[TRX], IMMED << 1, GPR[TRY]);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11001,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::SH
"sh r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_HALFWORD, GPR[TRX], EXTEND16 (IMMEDIATE), GPR[TRY]);
}



11011,3.RX,3.RY,5.IMMED:RRI:16::SW
"sw r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_WORD, GPR[TRX], IMMED << 2, GPR[TRY]);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11011,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::SW
"sw r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_WORD, GPR[TRX], EXTEND16 (IMMEDIATE), GPR[TRY]);
}



11010,3.RX,8.IMMED:RI:16::SWSP
"sw r<TRX>, <IMMED> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_WORD, SP, IMMED << 2, GPR[TRX]);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11010,3.RX,000,5.IMM_4_0:EXT-RI:16::SWSP
"sw r<TRX>, <IMMEDIATE> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_WORD, SP, EXTEND16 (IMMEDIATE), GPR[TRX]);
}



01100,010,8.IMMED:I8:16::SWRASP
"sw r<RAIDX>, <IMMED> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_WORD, SP, IMMED << 2, RA);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01100,010,000,5.IMM_4_0:EXT-I8:16::SWRASP
"sw r<RAIDX>, <IMMEDIATE> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_WORD, SP, EXTEND16 (IMMEDIATE), RA);
}



01111,3.RX,3.RY,5.IMMED:RRI:16::SD
"sd r<TRY>, <IMMED> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_DOUBLEWORD, GPR[TRX], IMMED << 3, GPR[TRY]);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01111,3.RX,3.RY,5.IMM_4_0:EXT-RRI:16::SD
"sd r<TRY>, <IMMEDIATE> (r<TRX>)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_DOUBLEWORD, GPR[TRX], EXTEND16 (IMMEDIATE), GPR[TRY]);
}



11111,001,3.RY,5.IMMED:RI64:16::SDSP
"sd r<TRY>, <IMMED> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_DOUBLEWORD, SP, IMMED << 3, GPR[TRY]);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,001,3.RY,5.IMM_4_0:EXT-RI64:16::SDSP
"sd r<TRY>, <IMMEDIATE> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_DOUBLEWORD, SP, EXTEND16 (IMMEDIATE), GPR[TRY]);
}



11111,010,8.IMMED:I64:16::SDRASP
"sd r<RAIDX>, <IMMED> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_DOUBLEWORD, SP, IMMED << 3, RA);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,010,000,5.IMM_4_0:EXT-I64:16::SDRASP
"sd r<RAIDX>, <IMMEDIATE> (SP)"
*mips16:
*vr4100:
{
  do_store (SD_, AccessLength_DOUBLEWORD, SP, EXTEND16 (IMMEDIATE), RA);
}



// ALU Immediate Instructions


01101,3.RX,8.IMMED:RI:16::LI
"li r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_ori (SD_, 0, TRX, IMMED);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01101,3.RX,000,5.IMM_4_0:EXT-RI:16::LI
"li r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_ori (SD_, 0, TRX, IMMEDIATE);
}



01000,3.RX,3.RY,0,4.IMMED:RRI-A:16::ADDIU
"addiu r<TRY>, r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_addiu (SD_, TRX, TRY, EXTEND4 (IMMED));
}

11110,7.IMM_10_4,4.IMM_14_11 + 01000,3.RX,3.RY,0,4.IMM_3_0:EXT-RRI-A:16::ADDIU
"addiu r<TRY>, r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_addiu (SD_, TRX, TRY, EXTEND15 (IMMEDIATE));
}



01001,3.RX,8.IMMED:RI:16::ADDIU8
"addiu r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_addiu (SD_, TRX, TRX, EXTEND8 (IMMED));
}

11110,6.IMM_10_5,5.IMM_15_11 + 01001,3.RX,000,5.IMM_4_0:EXT-RI:16::ADDIU8
"addiu r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_addiu (SD_, TRX, TRX, EXTEND16 (IMMEDIATE));
}



01100,011,8.IMMED:I8:16::ADJSP
"addiu SP, <IMMED>"
*mips16:
*vr4100:
{
  do_addiu (SD_, SPIDX, SPIDX, EXTEND8 (IMMED) << 3);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01100,011,000,5.IMM_4_0:EXT-I8:16::ADJSP
"addiu SP, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_addiu (SD_, SPIDX, SPIDX, EXTEND16 (IMMEDIATE));
}



00001,3.RX,8.IMMED:RI:16::ADDIUPC
"addiu r<TRX>, PC, <IMMED>"
*mips16:
*vr4100:
{
  unsigned32 temp = (basepc (SD_) & ~3) + (IMMED << 2);
  GPR[TRX] = EXTEND32 (temp);
}

11110,6.IMM_10_5,5.IMM_15_11 + 00001,3.RX,000,5.IMM_4_0:EXT-RI:16::ADDIUPC
"addiu r<TRX>, PC, <IMMEDIATE>"
*mips16:
*vr4100:
{
  unsigned32 temp = (basepc (SD_) & ~3) + EXTEND16 (IMMEDIATE);
  GPR[TRX] = EXTEND32 (temp);
}



00000,3.RX,8.IMMED:RI:16::ADDIUSP
"addiu r<TRX>, SP, <IMMED>"
*mips16:
*vr4100:
{
  do_addiu (SD_, SPIDX, TRX, IMMED << 2);
}

11110,6.IMM_10_5,5.IMM_15_11 + 00000,3.RX,000,5.IMM_4_0:EXT-RI:16::ADDIUSP
"addiu r<TRX>, SP, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_addiu (SD_, SPIDX, TRX, EXTEND16 (IMMEDIATE));
}



01000,3.RX,3.RY,1,4.IMMED:RRI-A:16::DADDIU
"daddiu r<TRY>, r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, TRX, TRY, EXTEND4 (IMMED));
}

11110,7.IMM_10_4,4.IMM_14_11 + 01000,3.RX,3.RY,1,4.IMM_3_0:EXT-RRI-A:16::DADDIU
"daddiu r<TRY>, r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, TRX, TRY, EXTEND15 (IMMEDIATE));
}



11111,101,3.RY,5.IMMED:RI64:16::DADDIU5
"daddiu r<TRY>, <IMMED>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, TRY, TRY, EXTEND5 (IMMED));
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,101,3.RY,5.IMM_4_0:EXT-RI64:16::DADDIU5
"daddiu r<TRY>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, TRY, TRY, EXTEND16 (IMMEDIATE));
}



11111,011,8.IMMED:I64:16::DADJSP
"daddiu SP, <IMMED>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, SPIDX, SPIDX, EXTEND8 (IMMED) << 3);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,011,000,5.IMM_4_0:EXT-I64:16::DADJSP
"daddiu SP, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, SPIDX, SPIDX, EXTEND16 (IMMEDIATE));
}



11111,110,3.RY,5.IMMED:RI64:16::DADDIUPC
"daddiu r<TRY>, PC, <IMMED>"
*mips16:
*vr4100:
{
  GPR[TRY] = (basepc (SD_) & ~3) + (IMMED << 2);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,110,3.RY,5.IMM_4_0:EXT-RI64:16::DADDIUPC
"daddiu r<TRY>, PC, <IMMEDIATE>"
*mips16:
*vr4100:
{
  GPR[TRY] = (basepc (SD_) & ~3) + EXTEND16 (IMMEDIATE);
}



11111,111,3.RY,5.IMMED:RI64:16::DADDIUSP
"daddiu r<TRY>, SP, <IMMED>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, SPIDX, TRY, IMMED << 2);
}

11110,6.IMM_10_5,5.IMM_15_11 + 11111,111,3.RY,5.IMM_4_0:EXT-RI64:16::DADDIUSP
"daddiu r<TRY>, SP, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_daddiu (SD_, SPIDX, TRY, EXTEND16 (IMMEDIATE));
}



01010,3.RX,8.IMMED:RI:16::SLTI
"slti r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_slti (SD_, TRX, T8IDX, IMMED);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01010,3.RX,000,5.IMM_4_0:EXT-RI:16::SLTI
"slti r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_slti (SD_, TRX, T8IDX, IMMEDIATE);
}



01011,3.RX,8.IMMED:RI:16::SLTIU
"sltiu r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_sltiu (SD_, TRX, T8IDX, IMMED);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01011,3.RX,000,5.IMM_4_0:EXT-RI:16::SLTIU
"sltiu r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_sltiu (SD_, TRX, T8IDX, IMMEDIATE);
}



11101,3.RX,3.RY,01010:RR:16::CMP
"sltiu r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_xor (SD_, TRX, TRY, T8IDX);
}


01110,3.RX,8.IMMED:RI:16::CMPI
"sltiu r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  do_xori (SD_, TRX, T8IDX, IMMED);
}

11110,6.IMM_10_5,5.IMM_15_11 + 01110,3.RX,000,5.IMM_4_0:EXT-RI:16::CMPI
"sltiu r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  do_xori (SD_, TRX, T8IDX, IMMEDIATE);
}



// Two/Three Operand, Register-Type



11100,3.RX,3.RY,3.RZ,01:RRR:16::ADDU
"addu r<TRZ>, r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_addu (SD_, TRX, TRY, TRZ);
}



11100,3.RX,3.RY,3.RZ,11:RRR:16::SUBU
"subu r<TRZ>, r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_subu (SD_, TRX, TRY, TRZ);
}

11100,3.RX,3.RY,3.RZ,00:RRR:16::DADDU
"daddu r<TRZ>, r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_daddu (SD_, TRX, TRY, TRZ);
}



11100,3.RX,3.RY,3.RZ,10:RRR:16::DSUBU
"dsubu r<TRZ>, r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_dsubu (SD_, TRX, TRY, TRZ);
}



11101,3.RX,3.RY,00010:RR:16::SLT
"slt r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_slt (SD_, TRX, TRY, T8IDX);
}



11101,3.RX,3.RY,00011:RR:16::SLTU
"sltu r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_sltu (SD_, TRX, TRY, T8IDX);
}



11101,3.RX,3.RY,01011:RR:16::NEG
"neg r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_subu (SD_, 0, TRY, TRX);
}



11101,3.RX,3.RY,01100:RR:16::AND
"and r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_and (SD_, TRX, TRY, TRX);
}



11101,3.RX,3.RY,01101:RR:16::OR
"or r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_or (SD_, TRX, TRY, TRX);
}



11101,3.RX,3.RY,01110:RR:16::XOR
"xor r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_xor (SD_, TRX, TRY, TRX);
}



11101,3.RX,3.RY,01111:RR:16::NOT
"not r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_nor (SD_, 0, TRY, TRX);
}



01100,111,3.RY,5.R32:I8_MOVR32:16::MOVR32
"move r<TRY>, r<R32>"
*mips16:
*vr4100:
{
  do_or (SD_, R32, 0, TRY);
}



01100,101,3.R32L,2.R32H,3.RZ:I8_MOV32R:16::MOV32R
"move r<R32>, r<TRZ>"
*mips16:
*vr4100:
{
  do_or (SD_, TRZ, 0, R32);
}



00110,3.RX,3.RY,3.SHAMT,00:SHIFT:16::SLL
"sll r<TRX>, r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_sll (SD_, TRY, TRX, SHIFT);
}

11110,5.SHAMT,0,00000 + 00110,3.RX,3.RY,000,00:EXT-SHIFT:16::SLL
"sll r<TRX>, r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_sll (SD_, TRY, TRX, SHAMT);
}



00110,3.RX,3.RY,3.SHAMT,10:SHIFT:16::SRL
"srl r<TRX>, r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_srl (SD_, TRY, TRX, SHIFT);
}

11110,5.SHAMT,0,00000 + 00110,3.RX,3.RY,000,10:EXT-SHIFT:16::SRL
"srl r<TRX>, r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_srl (SD_, TRY, TRX, SHAMT);
}



00110,3.RX,3.RY,3.SHAMT,11:SHIFT:16::SRA
"sra r<TRX>, r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_sra (SD_, TRY, TRX, SHIFT);
}

11110,5.SHAMT,0,00000 + 00110,3.RX,3.RY,000,11:EXT-SHIFT:16::SRA
"sra r<TRX>, r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_sra (SD_, TRY, TRX, SHAMT);
}



11101,3.RX,3.RY,00100:RR:16::SLLV
"sllv r<TRY>, r<TRX>"
*mips16:
*vr4100:
{
  do_sllv (SD_, TRX, TRY, TRY);
}


11101,3.RX,3.RY,00110:RR:16::SRLV
"srlv r<TRY>, r<TRX>"
*mips16:
*vr4100:
{
  do_srlv (SD_, TRX, TRY, TRY);
}


11101,3.RX,3.RY,00111:RR:16::SRAV
"srav r<TRY>, r<TRX>"
*mips16:
*vr4100:
{
  do_srav (SD_, TRX, TRY, TRY);
}


00110,3.RX,3.RY,3.SHAMT,01:SHIFT:16::DSLL
"dsll r<TRY>, r<TRX>, <SHIFT>"
*mips16:
*vr4100:
{
  do_dsll (SD_, TRY, TRX, SHIFT);
}
  
11110,5.SHAMT_4_0,1.S5,00000 + 00110,3.RX,3.RY,000,01:EXT-SHIFT:16::DSLL
"dsll r<TRY>, r<TRX>, <SHAMT>"
*mips16:
*vr4100:
{
  do_dsll (SD_, TRY, TRX, SHAMT);
}
  
  
  
11101,3.SHAMT,3.RY,01000:SHIFT64:16::DSRL
"dsrl r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_dsrl (SD_, TRY, TRY, SHIFT);
}

11110,5.SHAMT_4_0,1.S5,00000 + 11101,000,3.RY,01000:EXT-SHIFT64:16::DSRL
"dsrl r<TRY>, <SHAMT>"
*mips16:
*vr4100:
{
  do_dsrl (SD_, TRY, TRY, SHAMT);
}



11101,3.SHAMT,3.RY,10011:SHIFT64:16::DSRA
"dsra r<TRY>, <SHIFT>"
*mips16:
*vr4100:
{
  do_dsra (SD_, TRY, TRY, SHIFT);
}

11110,5.SHAMT_4_0,1.S5,00000 + 11101,000,3.RY,10011:EXT-SHIFT64:16::DSRA
"dsra r<TRY>, <SHAMT>"
*mips16:
*vr4100:
{
  do_dsra (SD_, TRY, TRY, SHAMT);
}



11101,3.RX,3.RY,10100:RR:16::DSLLV
"dsllv r<TRY>, r<TRX>"
*mips16:
*vr4100:
{
  do_dsllv (SD_, TRX, TRY, TRY);
}


11101,3.RX,3.RY,10110:RR:16::DSRLV
"dsrlv r<TRY>, r<TRX>"
*mips16:
*vr4100:
{
  do_dsrlv (SD_, TRX, TRY, TRY);
}


11101,3.RX,3.RY,10111:RR:16::DSRAV
"dsrav r<TRY>, r<TRX>"
*mips16:
*vr4100:
{
  do_dsrav (SD_, TRX, TRY, TRY);
}


// Multiply /Divide Instructions


11101,3.RX,3.RY,11000:RR:16::MULT
"mult r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_mult (SD_, TRX, TRY, 0);
}


11101,3.RX,3.RY,11001:RR:16::MULTU
"multu r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_multu (SD_, TRX, TRY, 0);
}


11101,3.RX,3.RY,11010:RR:16::DIV
"div r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_div (SD_, TRX, TRY);
}


11101,3.RX,3.RY,11011:RR:16::DIVU
"divu r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_divu (SD_, TRX, TRY);
}


11101,3.RX,000,10000:RR:16::MFHI
"mfhi r<TRX>"
*mips16:
*vr4100:
{
  do_mfhi (SD_, TRX);
}


11101,3.RX,000,10010:RR:16::MFLO
"mflo r<TRX>"
*mips16:
*vr4100:
{
  do_mflo (SD_, TRX);
}


11101,3.RX,3.RY,11100:RR:16::DMULT
"dmult r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_dmult (SD_, TRX, TRY, 0);
}


11101,3.RX,3.RY,11101:RR:16::DMULTU
"dmultu r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_dmultu (SD_, TRX, TRY, 0);
}


11101,3.RX,3.RY,11110:RR:16::DDIV
"ddiv r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_ddiv (SD_, TRX, TRY);
}


11101,3.RX,3.RY,11111:RR:16::DDIVU
"ddivu r<TRX>, r<TRY>"
*mips16:
*vr4100:
{
  do_ddivu (SD_, TRX, TRY);
}


// Jump and Branch Instructions



// Issue instruction in delay slot of branch
:function:::address_word:delayslot16:address_word nia, address_word target
{
  instruction_word delay_insn;
  sim_events_slip (SD, 1);
  DSPC = CIA; /* save current PC somewhere */
  STATE |= simDELAYSLOT;
  delay_insn = IMEM16 (nia); /* NOTE: mips16 */
  idecode_issue (CPU_, delay_insn, (nia));
  STATE &= ~simDELAYSLOT;
  return target;
}
  
// compute basepc dependant on us being in a delay slot
:function:::address_word:basepc:
{
  if (STATE & simDELAYSLOT)
    {
      return DSPC; /* return saved address of preceeding jmp */
    }
  else
    {
      return CIA;
    }
}


// JAL
00011,0,5.IMM_20_16,5.IMM_25_21 + 16.IMMED_15_0:JAL:16::JAL
"jal <IMMEDIATE>"
*mips16:
*vr4100:
{
  address_word region = (NIA & MASK (63, 28));
  RA = NIA + 2; /* skip 16 bit delayslot insn */
  NIA = delayslot16 (SD_, NIA, (region | (IMMEDIATE << 2))) | 1;
}



// JALX - 32 and 16 bit versions.

011101,26.IMMED:JALX:32::JALX32
"jalx <IMMED>"
*mips16:
*vr4100:
{
  address_word region = (NIA & MASK (63, 28));
  RA = NIA + 4; /* skip 32 bit delayslot insn */
  NIA = delayslot32 (SD_, (region | (IMMED << 2)) | 1);
}

00011,1,5.IMM_20_16,5.IMM_25_21 + 16.IMMED_15_0:JALX:16::JALX16
"jalx <IMMEDIATE>"
*mips16:
*vr4100:
{
  address_word region = (NIA & MASK (63, 28));
  RA = NIA + 2; /* 16 bit INSN */
  NIA = delayslot16 (SD_, NIA, (region | (IMMEDIATE << 2)) & ~1);
}



11101,3.RX,000,00000:RR:16::JR
"jr r<TRX>"
*mips16:
*vr4100:
{
  NIA = delayslot16 (SD_, NIA, GPR[TRX]);
}


11101,000,001,00000:RR:16::JRRA
"jrra"
*mips16:
*vr4100:
{
  NIA = delayslot16 (SD_, NIA, RA);
}



11101,3.RX,010,00000:RR:16::JALR
"jalr r<TRX>"
*mips16:
*vr4100:
{
  RA = NIA + 2;
  NIA = delayslot16 (SD_, NIA, GPR[TRX]);
}



00100,3.RX,8.IMMED:RI:16::BEQZ
"beqz r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  if (GPR[TRX] == 0)
    NIA = (NIA + (EXTEND8 (IMMED) << 1));
}

11110,6.IMM_10_5,5.IMM_15_11 + 00100,3.RX,000,5.IMM_4_0:EXT-RI:16::BEQZ
"beqz r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  if (GPR[TRX] == 0)
    NIA = (NIA + (EXTEND16 (IMMEDIATE) << 1));
}



00101,3.RX,8.IMMED:RI:16::BNEZ
"bnez r<TRX>, <IMMED>"
*mips16:
*vr4100:
{
  if (GPR[TRX] != 0)
    NIA = (NIA + (EXTEND8 (IMMED) << 1));
}

11110,6.IMM_10_5,5.IMM_15_11 + 00101,3.RX,000,5.IMM_4_0:EXT-RI:16::BNEZ
"bnez r<TRX>, <IMMEDIATE>"
*mips16:
*vr4100:
{
  if (GPR[TRX] != 0)
    NIA = (NIA + (EXTEND16 (IMMEDIATE) << 1));
}



01100,000,8.IMMED:I8:16::BTEQZ
"bteqz <IMMED>"
*mips16:
*vr4100:
{
  if (T8 == 0)
    NIA = (NIA + (EXTEND8 (IMMED) << 1));
}

11110,6.IMM_10_5,5.IMM_15_11 + 01100,000,000,5.IMM_4_0:EXT-I8:16::BTEQZ
"bteqz <IMMEDIATE>"
*mips16:
*vr4100:
{
  if (T8 == 0)
    NIA = (NIA + (EXTEND16 (IMMEDIATE) << 1));
}



01100,001,8.IMMED:I8:16::BTNEZ
"btnez <IMMED>"
*mips16:
*vr4100:
{
  if (T8 != 0)
    NIA = (NIA + (EXTEND8 (IMMED) << 1));
}

11110,6.IMM_10_5,5.IMM_15_11 + 01100,001,000,5.IMM_4_0:EXT-I8:16::BTNEZ
"btnez <IMMEDIATE>"
*mips16:
*vr4100:
{
  if (T8 != 0)
    NIA = (NIA + (EXTEND16 (IMMEDIATE) << 1));
}



00010,11.IMMED:I:16::B
"b <IMMED>"
*mips16:
*vr4100:
{
  NIA = (NIA + (EXTEND11 (IMMED) << 1));
}

11110,6.IMM_10_5,5.IMM_15_11 + 00010,6.0,5.IMM_4_0:EXT-I:16::B
"b <IMMEDIATE>"
*mips16:
*vr4100:
{
  NIA = (NIA + (EXTEND16 (IMMEDIATE) << 1));
}



11101,3.RX,3.RY,00101:RR:16::BREAK
"break"
*mips16:
*vr4100:
{
  if (STATE & simDELAYSLOT)
    PC = cia - 2; /* reference the branch instruction */
  else
    PC = cia;
  SignalException (BreakPoint, instruction_0);
}
