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Implemented BitfieldInsert and BitfieldU/SExtract

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This commit is contained in:
Lander Gallastegi 2025-04-10 16:53:49 +02:00
parent 515fb1241b
commit e54351eefb
2 changed files with 63 additions and 9 deletions
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6
src/shader_recompiler/backend/asm_x64/emit_x64_instructions.h
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@ -350,9 +350,9 @@ void EmitBitwiseAnd64(EmitContext& ctx, const Operands& dest, const Operands& op
void EmitBitwiseOr32(EmitContext& ctx, const Operands& dest, const Operands& op1, const Operands& op2);
void EmitBitwiseOr64(EmitContext& ctx, const Operands& dest, const Operands& op1, const Operands& op2);
void EmitBitwiseXor32(EmitContext& ctx, const Operands& dest, const Operands& op1, const Operands& op2);
void EmitBitFieldInsert(EmitContext& ctx);
void EmitBitFieldSExtract(EmitContext& ctx);
void EmitBitFieldUExtract(EmitContext& ctx);
void EmitBitFieldInsert(EmitContext& ctx, const Operands& dest, const Operands& base, const Operands& insert, const Operands& offset, const Operands& count);
void EmitBitFieldSExtract(EmitContext& ctx, const Operands& dest, const Operands& base, const Operands& offset, const Operands& count);
void EmitBitFieldUExtract(EmitContext& ctx, const Operands& dest, const Operands& base, const Operands& offset, const Operands& count);
void EmitBitReverse32(EmitContext& ctx);
void EmitBitCount32(EmitContext& ctx);
void EmitBitCount64(EmitContext& ctx);

66
src/shader_recompiler/backend/asm_x64/emit_x64_integer.cpp
View file

@ -300,16 +300,70 @@ void EmitBitwiseXor32(EmitContext& ctx, const Operands& dest, const Operands& op
MovGP(ctx, dest[0], tmp);
}
void EmitBitFieldInsert(EmitContext& ctx) {
throw NotImplementedException("BitFieldInsert");
void EmitBitFieldInsert(EmitContext& ctx, const Operands& dest, const Operands& base, const Operands& insert, const Operands& offset, const Operands& count) {
bool rcx_saved = EmitSaveRegTemp(ctx, rcx, dest[0]);
OperandHolder tmp = IsReg(dest[0], rcx) ? ctx.TempGPReg().cvt32() : dest[0];
Reg mask = ctx.TempGPReg().cvt32();
Reg tmp2 = ctx.TempGPReg().cvt32();
MovGP(ctx, tmp, base[0]);
MovGP(ctx, cl, count[0]);
MovGP(ctx, tmp2, insert[0]);
ctx.Code().mov(mask, 1);
ctx.Code().shl(mask, cl);
ctx.Code().sub(mask, 1);
MovGP(ctx, cl, offset[0]);
ctx.Code().shl(mask, cl);
ctx.Code().shl(tmp2, cl);
ctx.Code().and_(tmp2, mask);
ctx.Code().not_(mask);
ctx.Code().and_(tmp.Op(), mask);
ctx.Code().or_(tmp.Op(), tmp2);
MovGP(ctx, dest[0], tmp);
if (rcx_saved) {
EmitRestoreRegTemp(ctx, rcx);
}
}
void EmitBitFieldSExtract(EmitContext& ctx) {
throw NotImplementedException("BitFieldSExtract");
void EmitBitFieldSExtract(EmitContext& ctx, const Operands& dest, const Operands& base, const Operands& offset, const Operands& count) {
bool rcx_saved = EmitSaveRegTemp(ctx, rcx, dest[0]);
OperandHolder tmp = IsReg(dest[0], rcx) ? ctx.TempGPReg().cvt32() : dest[0];
Reg mask = ctx.TempGPReg().cvt32();
MovGP(ctx, tmp, base[0]);
MovGP(ctx, cl, count[0]);
ctx.Code().mov(mask, 1);
ctx.Code().shl(mask, cl);
ctx.Code().sub(mask, 1);
MovGP(ctx, cl, offset[0]);
ctx.Code().shl(mask, cl);
ctx.Code().and_(tmp.Op(), mask);
ctx.Code().shr(tmp.Op(), cl);
ctx.Code().mov(ecx, 0x20);
ctx.Code().sub(ecx, count[0].Op());
ctx.Code().shl(tmp.Op(), cl);
ctx.Code().sar(tmp.Op(), cl);
MovGP(ctx, dest[0], tmp);
if (rcx_saved) {
EmitRestoreRegTemp(ctx, rcx);
}
}
void EmitBitFieldUExtract(EmitContext& ctx) {
throw NotImplementedException("BitFieldUExtract");
void EmitBitFieldUExtract(EmitContext& ctx, const Operands& dest, const Operands& base, const Operands& offset, const Operands& count) {
bool rcx_saved = EmitSaveRegTemp(ctx, rcx, dest[0]);
OperandHolder tmp = IsReg(dest[0], rcx) ? ctx.TempGPReg().cvt32() : dest[0];
Reg mask = ctx.TempGPReg().cvt32();
MovGP(ctx, tmp, base[0]);
MovGP(ctx, cl, count[0]);
ctx.Code().mov(mask, 1);
ctx.Code().shl(mask, cl);
ctx.Code().sub(mask, 1);
MovGP(ctx, cl, offset[0]);
ctx.Code().shl(mask, cl);
ctx.Code().and_(tmp.Op(), mask);
ctx.Code().shr(tmp.Op(), cl);
MovGP(ctx, dest[0], tmp);
if (rcx_saved) {
EmitRestoreRegTemp(ctx, rcx);
}
}
void EmitBitReverse32(EmitContext& ctx) {