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| author | Nilay Vaish <nilay@cs.wisc.edu> | 2014-01-27 18:50:53 -0600 |
|---|---|---|
| committer | Nilay Vaish <nilay@cs.wisc.edu> | 2014-01-27 18:50:53 -0600 |
| commit | 6a543b51344ef8d511f2b67fa0d657a9a78dd169 (patch) | |
| tree | 1e2c3d0b4e15aec919fa49a4d9b3a085d82b5eb3 /src/arch/x86/isa/decoder/x87.isa | |
| parent | 5be0b846b1ca0131fc6c67c1ff7dcf64791ebc73 (diff) | |
| download | gem5-6a543b51344ef8d511f2b67fa0d657a9a78dd169.tar.xz | |
x86: implements x87 add/sub instructions
Diffstat (limited to 'src/arch/x86/isa/decoder/x87.isa')
| -rw-r--r-- | src/arch/x86/isa/decoder/x87.isa | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/src/arch/x86/isa/decoder/x87.isa b/src/arch/x86/isa/decoder/x87.isa index 61f125e7c..b325728ba 100644 --- a/src/arch/x86/isa/decoder/x87.isa +++ b/src/arch/x86/isa/decoder/x87.isa @@ -39,19 +39,23 @@ format WarnUnimpl { 0x1B: decode OPCODE_OP_BOTTOM3 { - //0x0: esc0(); 0x0: decode MODRM_REG { - // ST(0) = ST(0) + 32-bit Mem - 0x0: fadd(); + 0x0: decode MODRM_MOD { + 0x3: Inst::FADD1(Eq); + // 32-bit memory operand + default: Inst::FADD1(Md); + } 0x1: fmul(); 0x2: fcom(); 0x3: fcomp(); - 0x4: fsub(); + 0x4: decode MODRM_MOD { + 0x3: Inst::FSUB1(Eq); + default: Inst::FSUB1(Md); + } 0x5: fsubr(); 0x6: fdiv(); 0x7: fdivr(); } - //0x1: esc1(); 0x1: decode MODRM_REG { 0x0: decode MODRM_MOD { 0x3: Inst::FLD(Eq); @@ -202,7 +206,10 @@ format WarnUnimpl { } //0x4: esc4(); 0x4: decode MODRM_REG { - 0x0: fadd(); + 0x0: decode MODRM_MOD { + 0x3: Inst::FADD2(Eq); + default: Inst::FADD2(Mq); + } 0x1: fmul(); 0x2: decode MODRM_MOD { 0x3: Inst::UD2(); @@ -214,10 +221,10 @@ format WarnUnimpl { } 0x4: decode MODRM_MOD { 0x3: fsubr(); - default: fsub(); + default: Inst::FSUB2(Mq); } 0x5: decode MODRM_MOD { - 0x3: fsub(); + 0x3: Inst::FSUB2(Eq); default: fsubr(); } 0x6: decode MODRM_MOD { @@ -268,7 +275,10 @@ format WarnUnimpl { //0x6: esc6(); 0x6: decode MODRM_REG { 0x0: decode MODRM_MOD { - 0x3: faddp(); + 0x3: decode MODRM_RM { + 0x1: Inst::FADDP(); + default: Inst::FADDP(Eq); + } default: fiadd(); } 0x1: decode MODRM_MOD { @@ -291,7 +301,10 @@ format WarnUnimpl { default: fisub(); } 0x5: decode MODRM_MOD { - 0x3: fsubp(); + 0x3: decode MODRM_RM { + 0x1: Inst::FSUBP(); + default: Inst::FSUBP(Eq); + } default: fisubr(); } 0x6: decode MODRM_MOD { |