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JitArm64: Don't hardcode exception constants 

Unlike most constants we emit in JitArm64, these constants are
*not* inherent to the CPU we're emulating, and can have whatever
values we want. Let's handle them more robustly, in case we
decide to change their values in the future.
This commit is contained in:
JosJuice 2021-07-05 22:51:59 +02:00
parent 2409d30f5c
commit 58698b8380
3 changed files with 5 additions and 5 deletions
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6
Source/Core/Core/PowerPC/JitArm64/Jit.cpp
View File

@ -748,7 +748,7 @@ void JitArm64::DoJit(u32 em_address, JitBlock* b, u32 nextPC)
// Inline exception check
LDR(IndexType::Unsigned, ARM64Reg::W30, PPC_REG, PPCSTATE_OFF(Exceptions));
TBZ(ARM64Reg::W30, 3, done_here); // EXCEPTION_EXTERNAL_INT
TBZ(ARM64Reg::W30, IntLog2(EXCEPTION_EXTERNAL_INT), done_here);
LDR(IndexType::Unsigned, ARM64Reg::W30, PPC_REG, PPCSTATE_OFF(msr));
TBZ(ARM64Reg::W30, 11, done_here);
MOVP2R(ARM64Reg::X30, &ProcessorInterface::m_InterruptCause);
@ -774,7 +774,7 @@ void JitArm64::DoJit(u32 em_address, JitBlock* b, u32 nextPC)
ARM64Reg WA = gpr.GetReg();
ARM64Reg XA = EncodeRegTo64(WA);
LDR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
FixupBranch NoExtException = TBZ(WA, 3); // EXCEPTION_EXTERNAL_INT
FixupBranch NoExtException = TBZ(WA, IntLog2(EXCEPTION_EXTERNAL_INT));
FixupBranch Exception = B();
SwitchToFarCode();
const u8* done_here = GetCodePtr();
@ -816,7 +816,7 @@ void JitArm64::DoJit(u32 em_address, JitBlock* b, u32 nextPC)
fpr.Flush(FlushMode::MaintainState);
LDR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
ORR(WA, WA, 26, 0); // EXCEPTION_FPU_UNAVAILABLE
ORRI2R(WA, WA, EXCEPTION_FPU_UNAVAILABLE);
STR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
gpr.Unlock(WA);

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_Branch.cpp
View File

@ -25,7 +25,7 @@ void JitArm64::sc(UGeckoInstruction inst)
ARM64Reg WA = gpr.GetReg();
LDR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
ORR(WA, WA, 31, 0); // Same as WA | EXCEPTION_SYSCALL
ORRI2R(WA, WA, EXCEPTION_SYSCALL);
STR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
gpr.Unlock(WA);

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_SystemRegisters.cpp
View File

@ -218,7 +218,7 @@ void JitArm64::twx(UGeckoInstruction inst)
fpr.Flush(FlushMode::MaintainState);
LDR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
ORR(WA, WA, 24, 0); // Same as WA | EXCEPTION_PROGRAM
ORRI2R(WA, WA, EXCEPTION_PROGRAM);
STR(IndexType::Unsigned, WA, PPC_REG, PPCSTATE_OFF(Exceptions));
gpr.Unlock(WA);