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emit_arm64_data_processing: Implement LogicalShift{Left,Right}64

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Merry 2022-07-30 12:44:02 +01:00 committed by merry
parent 0692f1d40e
commit adb18fd0a7
1 changed files with 50 additions and 8 deletions
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58
src/dynarmic/backend/arm64/emit_arm64_data_processing.cpp
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@ -321,10 +321,31 @@ void EmitIR<IR::Opcode::LogicalShiftLeft32>(oaknut::CodeGenerator& code, EmitCon
template<> template<>
void EmitIR<IR::Opcode::LogicalShiftLeft64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) { void EmitIR<IR::Opcode::LogicalShiftLeft64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code; auto args = ctx.reg_alloc.GetArgumentInfo(inst);
(void)ctx;
(void)inst; if (args[1].IsImmediate()) {
ASSERT_FALSE("Unimplemented"); const u8 shift = args[1].GetImmediateU8();
auto Xresult = ctx.reg_alloc.WriteX(inst);
auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
RegAlloc::Realize(Xresult, Xoperand);
if (shift <= 63) {
code.LSL(Xresult, Xoperand, shift);
} else {
code.MOV(Xresult, XZR);
}
} else {
auto Xresult = ctx.reg_alloc.WriteX(inst);
auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
auto Xshift = ctx.reg_alloc.ReadX(args[1]);
RegAlloc::Realize(Xresult, Xoperand, Xshift);
ctx.reg_alloc.SpillFlags();
code.AND(Xscratch0, Xshift, 0xff);
code.LSL(Xresult, Xoperand, Xscratch0);
code.CMP(Xscratch0, 64);
code.CSEL(Xresult, Xresult, XZR, LT);
}
} }
template<> template<>
@ -430,10 +451,31 @@ void EmitIR<IR::Opcode::LogicalShiftRight32>(oaknut::CodeGenerator& code, EmitCo
template<> template<>
void EmitIR<IR::Opcode::LogicalShiftRight64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) { void EmitIR<IR::Opcode::LogicalShiftRight64>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
(void)code; auto args = ctx.reg_alloc.GetArgumentInfo(inst);
(void)ctx;
(void)inst; if (args[1].IsImmediate()) {
ASSERT_FALSE("Unimplemented"); const u8 shift = args[1].GetImmediateU8();
auto Xresult = ctx.reg_alloc.WriteX(inst);
auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
RegAlloc::Realize(Xresult, Xoperand);
if (shift <= 63) {
code.LSR(Xresult, Xoperand, shift);
} else {
code.MOV(Xresult, XZR);
}
} else {
auto Xresult = ctx.reg_alloc.WriteX(inst);
auto Xoperand = ctx.reg_alloc.ReadX(args[0]);
auto Xshift = ctx.reg_alloc.ReadX(args[1]);
RegAlloc::Realize(Xresult, Xoperand, Xshift);
ctx.reg_alloc.SpillFlags();
code.AND(Xscratch0, Xshift, 0xff);
code.LSR(Xresult, Xoperand, Xscratch0);
code.CMP(Xscratch0, 64);
code.CSEL(Xresult, Xresult, XZR, LT);
}
} }
template<> template<>