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fix JIT block hash after a merged thumb BL 

fixes #928
This commit is contained in:
RSDuck 2021-01-05 22:38:29 +01:00
parent ef75e3cdd1
commit 5865b4438e
2 changed files with 12 additions and 9 deletions
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19
src/ARMJIT.cpp
View File

@ -604,6 +604,8 @@ void CompileBlock(ARM* cpu)
// they are going to be hashed
u32 literalValues[Config::JIT_MaxBlockSize];
u32 instrValues[Config::JIT_MaxBlockSize];
// due to instruction merging i might not reflect the amount of actual instructions
u32 numInstrs = 0;
cpu->FillPipeline();
u32 nextInstr[2] = {cpu->NextInstr[0], cpu->NextInstr[1]};
@ -623,13 +625,13 @@ void CompileBlock(ARM* cpu)
instrs[i].SetFlags = 0;
instrs[i].Instr = nextInstr[0];
nextInstr[0] = nextInstr[1];
instrs[i].Addr = nextInstrAddr[0];
nextInstrAddr[0] = nextInstrAddr[1];
nextInstrAddr[1] = r15;
JIT_DEBUGPRINT("instr %08x %x\n", instrs[i].Instr & (thumb ? 0xFFFF : ~0), instrs[i].Addr);
instrValues[i] = instrs[i].Instr;
instrValues[numInstrs++] = instrs[i].Instr;
u32 translatedAddr = LocaliseCodeAddress(cpu->Num, instrs[i].Addr);
assert(translatedAddr >> 27);
@ -741,12 +743,13 @@ void CompileBlock(ARM* cpu)
if (thumb && instrs[i].Info.Kind == ARMInstrInfo::tk_BL_LONG_2 && i > 0
&& instrs[i - 1].Info.Kind == ARMInstrInfo::tk_BL_LONG_1)
{
instrs[i - 1].Info.Kind = ARMInstrInfo::tk_BL_LONG;
instrs[i - 1].Instr = (instrs[i - 1].Instr & 0xFFFF) | (instrs[i].Instr << 16);
instrs[i - 1].Info.DstRegs = 0xC000;
instrs[i - 1].Info.SrcRegs = 0;
instrs[i - 1].Info.EndBlock = true;
i--;
instrs[i].Info.Kind = ARMInstrInfo::tk_BL_LONG;
instrs[i].Instr = (instrs[i].Instr & 0xFFFF) | (instrs[i + 1].Instr << 16);
instrs[i].Info.DstRegs = 0xC000;
instrs[i].Info.SrcRegs = 0;
instrs[i].Info.EndBlock = true;
JIT_DEBUGPRINT("merged BL\n");
}
if (instrs[i].Info.Branches() && Config::JIT_BranchOptimisations)
@ -829,7 +832,7 @@ void CompileBlock(ARM* cpu)
} while(!instrs[i - 1].Info.EndBlock && i < Config::JIT_MaxBlockSize && !cpu->Halted && (!cpu->IRQ || (cpu->CPSR & 0x80)));
u32 literalHash = (u32)XXH3_64bits(literalValues, numLiterals * 4);
u32 instrHash = (u32)XXH3_64bits(instrValues, i * 4);
u32 instrHash = (u32)XXH3_64bits(instrValues, numInstrs * 4);
auto prevBlockIt = RestoreCandidates.find(instrHash);
JitBlock* prevBlock = NULL;

2
src/ARMJIT_x64/ARMJIT_Branch.cpp
View File

@ -275,7 +275,7 @@ void Compiler::T_Comp_BL_Merged()
target |= 1;
MOV(32, MapReg(14), Imm32((R15 - 2) | 1));
Comp_JumpTo(target);
}