ShuriZma
/
xenia
mirror of https://github.com/xenia-project/xenia.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[a64] Implement `OPCODE_PACK`(SHORT) 

Fails unit tests due to subtle rounding errors

`SHORT_4` unit-test is missing but implementation is the same as `SHORT_4`
This commit is contained in:
Wunkolo 2024-05-04 12:59:01 -07:00
parent 3b2612bfc0
commit e5fd3d340c
1 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/xenia/cpu/backend/a64/a64_seq_vector.cc
View File

@ -1175,8 +1175,26 @@ struct PACK : Sequence<PACK, I<OPCODE_PACK, V128Op, V128Op, V128Op>> {
e.CallNativeSafe(reinterpret_cast<void*>(EmulateFLOAT16_4));
e.MOV(i.dest.reg().B16(), Q0.B16());
}
static void EmitSHORT_2(A64Emitter& e, const EmitArgType& i) {}
static void EmitSHORT_4(A64Emitter& e, const EmitArgType& i) {}
static void EmitSHORT_2(A64Emitter& e, const EmitArgType& i) {
QReg src = i.src1;
if (i.src1.is_constant) {
src = i.dest;
e.LoadConstantV(src, i.src1.constant());
}
e.SQSHRN(i.dest.reg().toD().H4(), src.S4(), 8);
e.EXT(i.dest.reg().B16(), i.dest.reg().B16(), i.dest.reg().B16(), 4);
e.REV32(i.dest.reg().H8(), i.dest.reg().H8());
}
static void EmitSHORT_4(A64Emitter& e, const EmitArgType& i) {
QReg src = i.src1;
if (i.src1.is_constant) {
src = i.dest;
e.LoadConstantV(src, i.src1.constant());
}
e.SQSHRN(i.dest.reg().toD().H4(), src.S4(), 8);
e.EXT(i.dest.reg().B16(), i.dest.reg().B16(), i.dest.reg().B16(), 4);
e.REV32(i.dest.reg().H8(), i.dest.reg().H8());
}
static void EmitUINT_2101010(A64Emitter& e, const EmitArgType& i) {}
static void EmitULONG_4202020(A64Emitter& e, const EmitArgType& i) {}
static void Emit8_IN_16(A64Emitter& e, const EmitArgType& i, uint32_t flags) {