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A64: Implement EXTR

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Lioncash 2018-01-26 11:49:08 -05:00 • committed by MerryMage
parent e1fd6038a2
commit 7734cf1050
6 changed files with 61 additions and 1 deletions
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20
src/backend_x64/emit_x64_data_processing.cpp
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@ -176,6 +176,26 @@ void EmitX64::EmitConditionalSelect64(EmitContext& ctx, IR::Inst* inst) {
EmitConditionalSelect(code, ctx, inst, 64);
}
static void EmitExtractRegister(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, int bit_size) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Reg result = ctx.reg_alloc.UseScratchGpr(args[0]).changeBit(bit_size);
const Xbyak::Reg operand = ctx.reg_alloc.UseScratchGpr(args[1]).changeBit(bit_size);
const u8 lsb = args[2].GetImmediateU8();
code.shrd(result, operand, lsb);
ctx.reg_alloc.DefineValue(inst, result);
}
void EmitX64::EmitExtractRegister32(Dynarmic::BackendX64::EmitContext& ctx, IR::Inst* inst) {
EmitExtractRegister(*code, ctx, inst, 32);
}
void EmitX64::EmitExtractRegister64(Dynarmic::BackendX64::EmitContext& ctx, IR::Inst* inst) {
EmitExtractRegister(*code, ctx, inst, 64);
}
void EmitX64::EmitLogicalShiftLeft32(EmitContext& ctx, IR::Inst* inst) {
auto carry_inst = inst->GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp);