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UserspaceEmulator: Add partial support for some more x87 instructions

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Patch by @bcoles
This commit is contained in:
Andreas Kling 2021-03-09 14:30:30 +01:00
parent 57142a29a0
commit 0bf457f715
1 changed files with 26 additions and 5 deletions
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31
Userland/DevTools/UserspaceEmulator/SoftCPU.cpp
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@ -1582,11 +1582,23 @@ void SoftCPU::FLD1(const X86::Instruction&)
fpu_push(1.0);
}
void SoftCPU::FLDL2T(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FLDL2T(const X86::Instruction&)
{
fpu_push(log2f(10.0f));
}
void SoftCPU::FLDL2E(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FLDPI(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FLDLG2(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FLDLN2(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FLDLG2(const X86::Instruction&)
{
fpu_push(log10f(2.0f));
}
void SoftCPU::FLDLN2(const X86::Instruction&)
{
fpu_push(logf(2.0f));
}
void SoftCPU::FLDZ(const X86::Instruction&)
{
@ -1617,7 +1629,13 @@ void SoftCPU::FSQRT(const X86::Instruction&)
}
void SoftCPU::FSINCOS(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FRNDINT(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FRNDINT(const X86::Instruction&)
{
// FIXME: support rounding mode
fpu_set(0, round(fpu_get(0)));
}
void SoftCPU::FSCALE(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FSIN(const X86::Instruction&)
@ -1625,7 +1643,10 @@ void SoftCPU::FSIN(const X86::Instruction&)
fpu_set(0, sin(fpu_get(0)));
}
void SoftCPU::FCOS(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FCOS(const X86::Instruction&)
{
fpu_set(0, cos(fpu_get(0)));
}
void SoftCPU::FIADD_RM32(const X86::Instruction& insn)
{