The simplescalar tool set, version 2.0(25)

S.S ft,(rs+rd) inc_dec

SUB:

WRITE_WORD(FPR_L(FT),Opcode:GPR(RS)+GPR(RD))

Format:Semantics:Store double word from oating point regis-ter le, displaced addressing.SUBU:0x37

check).S.D ft,offset(rs) inc_dec

Opcode:WRITE_WORD(FPR_L(FT), GPR(RS)+OFF-Format:SET)

WRITE_WORD(FPR_L(FT+1), GPR(RS)+OFF-Semantics:SET+4)

MULT:Store double word from oating point regis-Opcode:ter le, indexed addressing.Format:0xd2

Semantics:S.D ft,(rs+rd) inc_dec

WRITE_WORD(FPR_L(FT),GPR(RS)+GPR(RD))

MULTU:WRITE_WORD(FPR_L(FT+1),Opcode:GPR(RS)+GPR(RD)+4)

Format:Semantics:

Store word left, displaced addressing.0x39

SWL rt,offset(rs)

Seess.deffor a detailed description of thisDIV:

instruction’s semantics. NOTE: SWL does notOpcode:support pre-/post- inc/dec.

Format:Semantics:

Store word right, displaced addressing.0x3a

Add signed (with over ow check).0x40

ADD rd,rs,rt

OVER(GPR(RT),GPR(RT))

SET_GPR(RD, GPR(RS) + GPR(RT))

Add immediate signed (with over ow0x41

ADDI rd,rs,rt

OVER(GPR(RS),IMM)

SET_GPR(RT, GPR(RS) + IMM)

Add unsigned (no over ow check).0x42

ADDU rd,rs,rt

SET_GPR(RD, GPR(RS) + GPR(RT))

Add immediate unsigned (no over ow0x43

ADDIU rd,rs,rt

SET_GPR(RT, GPR(RS) + IMM)

Subtract signed (with under ow check).0x44

SUB rd,rs,rt

UNDER(GPR(RS),GPR(RT))

SET_GPR(RD, GPR(RS) - GPR(RT))

Subtract unsigned (without under ow0x45

SUBU rd,rs,rt

SET_GPR(RD, GPR(RS) - GPR(RT))

Multiply signed.0x46

MULT rs,rt

SET_HI((RS * RT) / (1<<32))SET_LO((RS * RT) % (1<<32))

Multiply unsigned.0x47

MULTU rs,rt

SET_HI(((unsigned)RS * (unsigned)RT)/(1<<32))SET_LO(((unsigned)RS*(unsigned)RT) %(1<<32))

Divide signed.0x48DIV rs,rt

DIV0(GPR(RT))

SET_LO(GPR(RS) / GPR(RT))SET_HI(GPR(RS) % GPR(RT))

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