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UserspaceEmulator: Implement the ROL/ROR/RCL/RCR instructions

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This commit is contained in:
Andreas Kling 2020-07-16 16:08:13 +02:00
parent 897af8b4f7
commit 9f1221c785
2 changed files with 176 additions and 42 deletions
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20
DevTools/UserspaceEmulator/SoftCPU.h
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@ -215,22 +215,30 @@ public:
void set_cf(bool value) { set_flag(Flags::CF, value); }
void set_df(bool value) { set_flag(Flags::DF, value); }
void set_flags_with_mask(u32 new_flags, u32 mask)
{
m_eflags &= ~mask;
m_eflags |= new_flags & mask;
}
void set_flags_oszapc(u32 new_flags)
{
m_eflags &= ~(Flags::OF | Flags::SF | Flags::ZF | Flags::AF | Flags::PF | Flags::CF);
m_eflags |= new_flags & (Flags::OF | Flags::SF | Flags::ZF | Flags::AF | Flags::PF | Flags::CF);
set_flags_with_mask(new_flags, Flags::OF | Flags::SF | Flags::ZF | Flags::AF | Flags::PF | Flags::CF);
}
void set_flags_oszap(u32 new_flags)
{
m_eflags &= ~(Flags::OF | Flags::SF | Flags::ZF | Flags::AF | Flags::PF);
m_eflags |= new_flags & (Flags::OF | Flags::SF | Flags::ZF | Flags::AF | Flags::PF);
set_flags_with_mask(new_flags, Flags::OF | Flags::SF | Flags::ZF | Flags::AF | Flags::PF);
}
void set_flags_oszpc(u32 new_flags)
{
m_eflags &= ~(Flags::OF | Flags::SF | Flags::ZF | Flags::PF | Flags::CF);
m_eflags |= new_flags & (Flags::OF | Flags::SF | Flags::ZF | Flags::PF | Flags::CF);
set_flags_with_mask(new_flags, Flags::OF | Flags::SF | Flags::ZF | Flags::PF | Flags::CF);
}
void set_flags_oc(u32 new_flags)
{
set_flags_with_mask(new_flags, Flags::OF | Flags::CF);
}
u16 cs() const { return m_segment[(int)X86::SegmentRegister::CS]; }