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UserspaceEmulator: SoftCPU: Add support for FPTAN instruction

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This commit is contained in:
Brendan Coles 2021-03-14 08:10:11 +00:00 • committed by Andreas Kling
commit 2c24c0e451
Notes: sideshowbarker 2024-07-18 21:23:20 +09:00
1 changed files with 8 additions and 1 deletions
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9
Userland/DevTools/UserspaceEmulator/SoftCPU.cpp
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@ -1641,7 +1641,14 @@ void SoftCPU::FYL2XP1(const X86::Instruction&)
fpu_pop();
}
void SoftCPU::FPTAN(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FPTAN(const X86::Instruction&)
{
// FIXME: set C1 upon stack overflow or if result was rounded
// FIXME: Set C2 to 1 if ST(0) is outside range of -2^63 to +2^63; else set to 0
fpu_set(0, tanf(fpu_get(0)));
fpu_push(1.0f);
}
void SoftCPU::FPATAN(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FXTRACT(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::FPREM1(const X86::Instruction&) { TODO_INSN(); }