diff options
Diffstat (limited to 'Userland/DevTools/UserspaceEmulator/SoftFPU.cpp')
| -rw-r--r-- | Userland/DevTools/UserspaceEmulator/SoftFPU.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/Userland/DevTools/UserspaceEmulator/SoftFPU.cpp b/Userland/DevTools/UserspaceEmulator/SoftFPU.cpp index 2daf44bd7d..00c91cd046 100644 --- a/Userland/DevTools/UserspaceEmulator/SoftFPU.cpp +++ b/Userland/DevTools/UserspaceEmulator/SoftFPU.cpp @@ -437,19 +437,20 @@ void SoftFPU::FCMOVB(const X86::Instruction& insn) } void SoftFPU::FCMOVNB(const X86::Instruction& insn) { - VERIFY(!insn.modrm().is_register()); - auto m32int = (i32)insn.modrm().read32(m_cpu, insn).value(); - // FIXME: Respect shadow values - fpu_push((long double)m32int); + VERIFY(insn.modrm().is_register()); + if (!m_cpu.cf()) + fpu_set(0, fpu_get(insn.modrm().rm())); } void SoftFPU::FCMOVBE(const X86::Instruction& insn) { - if (m_cpu.cf() | m_cpu.zf()) + VERIFY(insn.modrm().is_register()); + if (m_cpu.cf() || m_cpu.zf()) fpu_set(0, fpu_get(insn.modrm().rm())); } void SoftFPU::FCMOVNBE(const X86::Instruction& insn) { - if (!(m_cpu.cf() | m_cpu.zf())) + VERIFY(insn.modrm().is_register()); + if (!(m_cpu.cf() || m_cpu.zf())) fpu_set(0, fpu_get(insn.modrm().rm())); } @@ -462,7 +463,7 @@ void SoftFPU::FCMOVU(const X86::Instruction& insn) void SoftFPU::FCMOVNU(const X86::Instruction& insn) { VERIFY(insn.modrm().is_register()); - if (m_cpu.pf()) + if (!m_cpu.pf()) fpu_set(0, fpu_get((insn.modrm().reg_fpu()))); } |