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A64: Implement FCCMPE

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This commit is contained in:
MerryMage 2018-02-05 12:25:53 +00:00
parent ef906dbbfa
commit 81713c2b77
2 changed files with 17 additions and 1 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -913,7 +913,7 @@ INST(FMOV_float_imm, "FMOV (scalar, immediate)", "00011
// Data Processing - FP and SIMD - Floating point conditional compare // Data Processing - FP and SIMD - Floating point conditional compare
INST(FCCMP_float, "FCCMP", "00011110yy1mmmmmcccc01nnnnn0ffff") INST(FCCMP_float, "FCCMP", "00011110yy1mmmmmcccc01nnnnn0ffff")
//INST(FCCMPE_float, "FCCMPE", "00011110yy1mmmmmcccc01nnnnn1ffff") INST(FCCMPE_float, "FCCMPE", "00011110yy1mmmmmcccc01nnnnn1ffff")
// Data Processing - FP and SIMD - Floating point data processing two register // Data Processing - FP and SIMD - Floating point data processing two register
INST(FMUL_float, "FMUL (scalar)", "00011110yy1mmmmm000010nnnnnddddd") INST(FMUL_float, "FMUL (scalar)", "00011110yy1mmmmm000010nnnnnddddd")

16
src/frontend/A64/translate/impl/floating_point_conditional_compare.cpp
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@ -38,4 +38,20 @@ bool TranslatorVisitor::FCCMP_float(Imm<2> type, Vec Vm, Cond cond, Vec Vn, Imm<
return true; return true;
} }
bool TranslatorVisitor::FCCMPE_float(Imm<2> type, Vec Vm, Cond cond, Vec Vn, Imm<4> nzcv) {
const auto datasize = GetDataSize(type);
if (!datasize || *datasize == 16) {
return UnallocatedEncoding();
}
const u32 flags = nzcv.ZeroExtend<u32>() << 28;
const IR::U32U64 operand1 = V_scalar(*datasize, Vn);
const IR::U32U64 operand2 = V_scalar(*datasize, Vm);
const IR::NZCV then_flags = ir.FPCompare(operand1, operand2, true, true);
const IR::NZCV else_flags = ir.NZCVFromPackedFlags(ir.Imm32(flags));
ir.SetNZCV(ir.ConditionalSelect(cond, then_flags, else_flags));
return true;
}
} // namespace Dynarmic::A64 } // namespace Dynarmic::A64