diff options
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/integer_scaled_add.cpp | 48 |
1 files changed, 31 insertions, 17 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_scaled_add.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_scaled_add.cpp index 93cc2c0b1..044671943 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_scaled_add.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_scaled_add.cpp @@ -8,40 +8,36 @@ namespace Shader::Maxwell { namespace { -void ISCADD(TranslatorVisitor& v, u64 insn, IR::U32 op_b) { +void ISCADD(TranslatorVisitor& v, u64 insn, IR::U32 op_b, bool cc, bool neg_a, bool neg_b, + u64 scale_imm) { union { u64 raw; BitField<0, 8, IR::Reg> dest_reg; BitField<8, 8, IR::Reg> op_a; - BitField<47, 1, u64> cc; - BitField<48, 2, u64> three_for_po; - BitField<48, 1, u64> neg_b; - BitField<49, 1, u64> neg_a; - BitField<39, 5, u64> scale; } const iscadd{insn}; - const bool po{iscadd.three_for_po == 3}; + const bool po{neg_a && neg_b}; IR::U32 op_a{v.X(iscadd.op_a)}; - if (!po) { + if (po) { + // When PO is present, add one + op_b = v.ir.IAdd(op_b, v.ir.Imm32(1)); + } else { // When PO is not present, the bits are interpreted as negation - if (iscadd.neg_a != 0) { + if (neg_a) { op_a = v.ir.INeg(op_a); } - if (iscadd.neg_b != 0) { + if (neg_b) { op_b = v.ir.INeg(op_b); } - } else { - // When PO is present, add one - op_b = v.ir.IAdd(op_b, v.ir.Imm32(1)); } // With the operands already processed, scale A - const IR::U32 scale{v.ir.Imm32(static_cast<u32>(iscadd.scale))}; + const IR::U32 scale{v.ir.Imm32(static_cast<u32>(scale_imm))}; const IR::U32 scaled_a{v.ir.ShiftLeftLogical(op_a, scale)}; const IR::U32 result{v.ir.IAdd(scaled_a, op_b)}; v.X(iscadd.dest_reg, result); - if (iscadd.cc != 0) { + if (cc) { v.SetZFlag(v.ir.GetZeroFromOp(result)); v.SetSFlag(v.ir.GetSignFromOp(result)); const IR::U1 carry{v.ir.GetCarryFromOp(result)}; @@ -51,6 +47,18 @@ void ISCADD(TranslatorVisitor& v, u64 insn, IR::U32 op_b) { } } +void ISCADD(TranslatorVisitor& v, u64 insn, IR::U32 op_b) { + union { + u64 raw; + BitField<47, 1, u64> cc; + BitField<48, 1, u64> neg_b; + BitField<49, 1, u64> neg_a; + BitField<39, 5, u64> scale; + } const iscadd{insn}; + + ISCADD(v, insn, op_b, iscadd.cc != 0, iscadd.neg_a != 0, iscadd.neg_b != 0, iscadd.scale); +} + } // Anonymous namespace void TranslatorVisitor::ISCADD_reg(u64 insn) { @@ -65,8 +73,14 @@ void TranslatorVisitor::ISCADD_imm(u64 insn) { ISCADD(*this, insn, GetImm20(insn)); } -void TranslatorVisitor::ISCADD32I(u64) { - throw NotImplementedException("ISCADD32I"); +void TranslatorVisitor::ISCADD32I(u64 insn) { + union { + u64 raw; + BitField<52, 1, u64> cc; + BitField<53, 5, u64> scale; + } const iscadd{insn}; + + return ISCADD(*this, insn, GetImm32(insn), iscadd.cc != 0, false, false, iscadd.scale); } } // namespace Shader::Maxwell |