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UserspaceEmulator: Wrap the GPRs in ValueWithShadow

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...instead of manually tracking their shadow data.
This commit is contained in:
Ali Mohammad Pur 2022-02-27 23:58:53 +03:30 • committed by Andreas Kling
parent f6e82a8e0a
commit 70b53b44b2
3 changed files with 25 additions and 30 deletions
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43
Userland/DevTools/UserspaceEmulator/SoftCPU.h
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@ -88,21 +88,21 @@ public:
{
switch (reg) {
case X86::RegisterAL:
return { m_gpr[X86::RegisterEAX].low_u8, m_gpr_shadow[X86::RegisterEAX].low_u8 };
return m_gpr[X86::RegisterEAX].reference_to<&PartAddressableRegister::low_u8>();
case X86::RegisterAH:
return { m_gpr[X86::RegisterEAX].high_u8, m_gpr_shadow[X86::RegisterEAX].high_u8 };
return m_gpr[X86::RegisterEAX].reference_to<&PartAddressableRegister::high_u8>();
case X86::RegisterBL:
return { m_gpr[X86::RegisterEBX].low_u8, m_gpr_shadow[X86::RegisterEBX].low_u8 };
return m_gpr[X86::RegisterEBX].reference_to<&PartAddressableRegister::low_u8>();
case X86::RegisterBH:
return { m_gpr[X86::RegisterEBX].high_u8, m_gpr_shadow[X86::RegisterEBX].high_u8 };
return m_gpr[X86::RegisterEBX].reference_to<&PartAddressableRegister::high_u8>();
case X86::RegisterCL:
return { m_gpr[X86::RegisterECX].low_u8, m_gpr_shadow[X86::RegisterECX].low_u8 };
return m_gpr[X86::RegisterECX].reference_to<&PartAddressableRegister::low_u8>();
case X86::RegisterCH:
return { m_gpr[X86::RegisterECX].high_u8, m_gpr_shadow[X86::RegisterECX].high_u8 };
return m_gpr[X86::RegisterECX].reference_to<&PartAddressableRegister::high_u8>();
case X86::RegisterDL:
return { m_gpr[X86::RegisterEDX].low_u8, m_gpr_shadow[X86::RegisterEDX].low_u8 };
return m_gpr[X86::RegisterEDX].reference_to<&PartAddressableRegister::low_u8>();
case X86::RegisterDH:
return { m_gpr[X86::RegisterEDX].high_u8, m_gpr_shadow[X86::RegisterEDX].high_u8 };
return m_gpr[X86::RegisterEDX].reference_to<&PartAddressableRegister::high_u8>();
}
VERIFY_NOT_REACHED();
}
@ -111,43 +111,43 @@ public:
{
switch (reg) {
case X86::RegisterAL:
return { m_gpr[X86::RegisterEAX].low_u8, m_gpr_shadow[X86::RegisterEAX].low_u8 };
return m_gpr[X86::RegisterEAX].slice<&PartAddressableRegister::low_u8>();
case X86::RegisterAH:
return { m_gpr[X86::RegisterEAX].high_u8, m_gpr_shadow[X86::RegisterEAX].high_u8 };
return m_gpr[X86::RegisterEAX].slice<&PartAddressableRegister::high_u8>();
case X86::RegisterBL:
return { m_gpr[X86::RegisterEBX].low_u8, m_gpr_shadow[X86::RegisterEBX].low_u8 };
return m_gpr[X86::RegisterEBX].slice<&PartAddressableRegister::low_u8>();
case X86::RegisterBH:
return { m_gpr[X86::RegisterEBX].high_u8, m_gpr_shadow[X86::RegisterEBX].high_u8 };
return m_gpr[X86::RegisterEBX].slice<&PartAddressableRegister::high_u8>();
case X86::RegisterCL:
return { m_gpr[X86::RegisterECX].low_u8, m_gpr_shadow[X86::RegisterECX].low_u8 };
return m_gpr[X86::RegisterECX].slice<&PartAddressableRegister::low_u8>();
case X86::RegisterCH:
return { m_gpr[X86::RegisterECX].high_u8, m_gpr_shadow[X86::RegisterECX].high_u8 };
return m_gpr[X86::RegisterECX].slice<&PartAddressableRegister::high_u8>();
case X86::RegisterDL:
return { m_gpr[X86::RegisterEDX].low_u8, m_gpr_shadow[X86::RegisterEDX].low_u8 };
return m_gpr[X86::RegisterEDX].slice<&PartAddressableRegister::low_u8>();
case X86::RegisterDH:
return { m_gpr[X86::RegisterEDX].high_u8, m_gpr_shadow[X86::RegisterEDX].high_u8 };
return m_gpr[X86::RegisterEDX].slice<&PartAddressableRegister::high_u8>();
}
VERIFY_NOT_REACHED();
}
ValueWithShadow<u16> const_gpr16(X86::RegisterIndex16 reg) const
{
return { m_gpr[reg].low_u16, m_gpr_shadow[reg].low_u16 };
return m_gpr[reg].slice<&PartAddressableRegister::low_u16>();
}
ValueAndShadowReference<u16> gpr16(X86::RegisterIndex16 reg)
{
return { m_gpr[reg].low_u16, m_gpr_shadow[reg].low_u16 };
return m_gpr[reg].reference_to<&PartAddressableRegister::low_u16>();
}
ValueWithShadow<u32> const_gpr32(X86::RegisterIndex32 reg) const
{
return { m_gpr[reg].full_u32, m_gpr_shadow[reg].full_u32 };
return m_gpr[reg].slice<&PartAddressableRegister::full_u32>();
}
ValueAndShadowReference<u32> gpr32(X86::RegisterIndex32 reg)
{
return { m_gpr[reg].full_u32, m_gpr_shadow[reg].full_u32 };
return m_gpr[reg].reference_to<&PartAddressableRegister::full_u32>();
}
template<typename T>
@ -1252,8 +1252,7 @@ private:
Emulator& m_emulator;
SoftFPU m_fpu;
PartAddressableRegister m_gpr[8];
PartAddressableRegister m_gpr_shadow[8];
ValueWithShadow<PartAddressableRegister> m_gpr[8];
u16 m_segment[8] { 0 };
u32 m_eflags { 0 };