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[ARM] Implements more fastmem instructions in lXX. 

There are a few instructions in lXX that aren't currently fastmem capable due to using a register offset.
This implements fastmem for those few instructions.
Really I'll be changing how ARMv7 fastmem works in the future so this is really temporary code.
Just don't know how long it'll stay.
This relies on PR #257
This commit is contained in:
Ryan Houdek 2014-04-10 09:25:13 +00:00 committed by Ryan Houdek
parent a07f8fb65b
commit 3f73fc37fc
2 changed files with 22 additions and 5 deletions
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2
Source/Core/Core/PowerPC/JitArm32/Jit.h
View File

@ -108,7 +108,7 @@ public:
void UnsafeStoreFromReg(ARMReg dest, ARMReg value, int accessSize, s32 offset);
void SafeStoreFromReg(bool fastmem, s32 dest, u32 value, s32 offsetReg, int accessSize, s32 offset);
void UnsafeLoadToReg(ARMReg dest, ARMReg addr, int accessSize, s32 offset);
void UnsafeLoadToReg(ARMReg dest, ARMReg addr, int accessSize, s32 offsetReg, s32 offset);
void SafeLoadToReg(bool fastmem, u32 dest, s32 addr, s32 offsetReg, int accessSize, s32 offset, bool signExtend, bool reverse);

25
Source/Core/Core/PowerPC/JitArm32/JitArm_LoadStore.cpp
View File

@ -214,11 +214,20 @@ void JitArm::stX(UGeckoInstruction inst)
}
}
void JitArm::UnsafeLoadToReg(ARMReg dest, ARMReg addr, int accessSize, s32 offset)
void JitArm::UnsafeLoadToReg(ARMReg dest, ARMReg addr, int accessSize, s32 offsetReg, s32 offset)
{
ARMReg rA = gpr.GetReg();
MOVI2R(rA, offset, false); // -3
ADD(addr, addr, rA); // - 1
if (offsetReg == -1)
{
MOVI2R(rA, offset, false); // -3
ADD(addr, addr, rA); // - 1
}
else
{
NOP(2); // -3, -2
// offsetReg is preloaded here
ADD(addr, addr, gpr.R(offsetReg)); // -1
}
// All this gets replaced on backpatch
Operand2 mask(2, 1); // ~(Memory::MEMVIEW32_MASK)
@ -257,14 +266,19 @@ void JitArm::UnsafeLoadToReg(ARMReg dest, ARMReg addr, int accessSize, s32 offse
void JitArm::SafeLoadToReg(bool fastmem, u32 dest, s32 addr, s32 offsetReg, int accessSize, s32 offset, bool signExtend, bool reverse)
{
ARMReg RD = gpr.R(dest);
if (Core::g_CoreStartupParameter.bFastmem && fastmem)
{
// Preload for fastmem
if (offsetReg != -1)
gpr.R(offsetReg);
if (addr != -1)
MOV(R10, gpr.R(addr));
else
MOV(R10, 0);
UnsafeLoadToReg(RD, R10, accessSize, offset);
UnsafeLoadToReg(RD, R10, accessSize, offsetReg, offset);
return;
}
ARMReg rA = gpr.GetReg();
@ -336,18 +350,21 @@ void JitArm::lXX(UGeckoInstruction inst)
case 55: // lwzux
update = true;
case 23: // lwzx
fastmem = true;
accessSize = 32;
offsetReg = b;
break;
case 119: //lbzux
update = true;
case 87: // lbzx
fastmem = true;
accessSize = 8;
offsetReg = b;
break;
case 311: // lhzux
update = true;
case 279: // lhzx
fastmem = true;
accessSize = 16;
offsetReg = b;
break;