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[CPU] Xbox360 cache line is always 128 bytes

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Fixes: 4E4D07E0 & 4E4D083D
This commit is contained in:
Gliniak
2026-06-14 13:38:01 +02:00
parent 30ac9d7be6
commit 72ce130971
1 changed files with 8 additions and 12 deletions
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20
src/xenia/cpu/ppc/ppc_emit_memory.cc
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@@ -1156,18 +1156,6 @@ int InstrEmit_dcbtst(PPCHIRBuilder& f, const InstrData& i) {
return 0;
}
int InstrEmit_dcbz(PPCHIRBuilder& f, const InstrData& i) {
// EA <- (RA) + (RB)
// memset(EA & ~31, 0, 32)
Value* ea = CalculateEA_0(f, i.X.RA, i.X.RB);
// dcbz - 32 byte set
int block_size = 32;
int address_mask = ~31;
f.Memset(f.And(ea, f.LoadConstantInt64(address_mask)), f.LoadZeroInt8(),
f.LoadConstantInt64(block_size));
return 0;
}
int InstrEmit_dcbz128(PPCHIRBuilder& f, const InstrData& i) {
// EA <- (RA) + (RB)
// memset(EA & ~31, 0, 32)
@@ -1180,6 +1168,14 @@ int InstrEmit_dcbz128(PPCHIRBuilder& f, const InstrData& i) {
return 0;
}
int InstrEmit_dcbz(PPCHIRBuilder& f, const InstrData& i) {
// EA <- (RA) + (RB)
// memset(EA & ~31, 0, 32)
// On Xbox360 there is no short cache line. Normal dcbz always clears 128
// bytes.
return InstrEmit_dcbz128(f, i);
}
int InstrEmit_icbi(PPCHIRBuilder& f, const InstrData& i) {
// XEINSTRNOTIMPLEMENTED();
f.Nop();