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x86: implements x87 mult/div instructions

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This commit is contained in:
Nilay Vaish
2015-04-13 17:33:57 -05:00
parent dea7acdb3e
commit e596e52498
3 changed files with 130 additions and 11 deletions
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23
src/arch/x86/isa/decoder/x87.isa
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@@ -45,7 +45,10 @@ format WarnUnimpl {
// 32-bit memory operand
default: Inst::FADD1(Md);
}
0x1: fmul();
0x1: decode MODRM_MOD {
0x3: Inst::FMUL1(Eq);
default: Inst::FMUL1(Md);
}
0x2: fcom();
0x3: fcomp();
0x4: decode MODRM_MOD {
@@ -53,7 +56,10 @@ format WarnUnimpl {
default: Inst::FSUB1(Md);
}
0x5: fsubr();
0x6: fdiv();
0x6: decode MODRM_MOD {
0x3: Inst::FDIV1(Eq);
default: Inst::FDIV1(Md);
}
0x7: fdivr();
}
0x1: decode MODRM_REG {
@@ -210,7 +216,10 @@ format WarnUnimpl {
0x3: Inst::FADD2(Eq);
default: Inst::FADD2(Mq);
}
0x1: fmul();
0x1: decode MODRM_MOD {
0x3: Inst::FMUL2(Eq);
default: Inst::FMUL2(Mq);
}
0x2: decode MODRM_MOD {
0x3: Inst::UD2();
default: fcom();
@@ -229,10 +238,10 @@ format WarnUnimpl {
}
0x6: decode MODRM_MOD {
0x3: fdivr();
default: fdiv();
default: Inst::FDIV2(Mq);
}
0x7: decode MODRM_MOD {
0x3: fdiv();
0x3: Inst::FDIV2(Eq);
default: fdivr();
}
}
@@ -282,7 +291,7 @@ format WarnUnimpl {
default: fiadd();
}
0x1: decode MODRM_MOD {
0x3: fmulp();
0x3: Inst::FMULP(Eq);
default: fimul();
}
0x2: decode MODRM_MOD {
@@ -312,7 +321,7 @@ format WarnUnimpl {
default: fidiv();
}
0x7: decode MODRM_MOD {
0x3: fdivp();
0x3: Inst::FDIVP(Eq);
default: fidivr();
}
}