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A64: Implement FCVT

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This commit is contained in:
MerryMage 2018-02-03 01:23:11 +00:00
parent ca38225e08
commit 1fb0957aa3
2 changed files with 49 additions and 1 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -919,7 +919,7 @@ INST(EOR_asimd, "EOR (vector)", "0Q101
//INST(FABS_float, "FABS (scalar)", "00011110yy100000110000nnnnnddddd")
//INST(FNEG_float, "FNEG (scalar)", "00011110yy100001010000nnnnnddddd")
//INST(FSQRT_float, "FSQRT (scalar)", "00011110yy100001110000nnnnnddddd")
//INST(FCVT_float, "FCVT", "00011110yy10001oo10000nnnnnddddd")
INST(FCVT_float, "FCVT", "00011110yy10001oo10000nnnnnddddd")
//INST(FRINTN_float, "FRINTN (scalar)", "00011110yy100100010000nnnnnddddd")
//INST(FRINTP_float, "FRINTP (scalar)", "00011110yy100100110000nnnnnddddd")
//INST(FRINTM_float, "FRINTM (scalar)", "00011110yy100101010000nnnnnddddd")

48
src/frontend/A64/translate/impl/floating_point_data_processing_one_register.cpp
View file

@ -56,4 +56,52 @@ bool TranslatorVisitor::FMOV_float_imm(Imm<2> type, Imm<8> imm8, Vec Vd) {
return true;
}
bool TranslatorVisitor::FCVT_float(Imm<2> type, Imm<2> opc, Vec Vn, Vec Vd) {
if (type == opc) {
return UnallocatedEncoding();
}
boost::optional<size_t> srcsize = GetDataSize(type);
boost::optional<size_t> dstsize = GetDataSize(opc);
if (!srcsize || !dstsize) {
return UnallocatedEncoding();
}
IR::UAny operand = V_scalar(*srcsize, Vn);
IR::UAny result;
switch (*srcsize) {
case 16:
switch (*dstsize) {
case 32:
return InterpretThisInstruction();
case 64:
return InterpretThisInstruction();
}
break;
case 32:
switch (*dstsize) {
case 16:
return InterpretThisInstruction();
case 64:
result = ir.FPSingleToDouble(operand, true);
break;
}
break;
case 64:
switch (*dstsize) {
case 16:
return InterpretThisInstruction();
case 32:
result = ir.FPDoubleToSingle(operand, true);
break;
}
break;
}
V_scalar(*dstsize, Vd, result);
return true;
}
} // namespace Dynarmic::A64