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UserspaceEmulator: Add the INC and ADD instructions

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More inline assembly. I'm still figuring out how to combine templates
and inline assembly, but it's turning out pretty cool. :^)
This commit is contained in:
Andreas Kling 2020-07-11 14:20:08 +02:00
parent 12ab46def9
commit e852768ba6
2 changed files with 103 additions and 27 deletions
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20
DevTools/UserspaceEmulator/SoftCPU.h
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@ -201,6 +201,18 @@ public:
void set_pf(bool value) { set_flag(Flags::PF, value); }
void set_cf(bool value) { set_flag(Flags::CF, value); }
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);
}
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);
}
u16 cs() const { return m_segment[(int)X86::SegmentRegister::CS]; }
u16 ds() const { return m_segment[(int)X86::SegmentRegister::DS]; }
u16 es() const { return m_segment[(int)X86::SegmentRegister::ES]; }
@ -757,12 +769,8 @@ private:
template<typename T>
T sar_impl(T data, u8 steps);
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);
}
template<typename T>
T inc_impl(T);
private:
Emulator& m_emulator;