diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp new file mode 100644 index 000000000..b6a7b593d --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp @@ -0,0 +1,62 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/bit_field.h" +#include "common/common_types.h" +#include "shader_recompiler/frontend/maxwell/translate/impl/common_funcs.h" +#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h" + +namespace Shader::Maxwell { +namespace { +void ISET(TranslatorVisitor& v, u64 insn, const IR::U32& src_a) { + union { + u64 insn; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> src_reg; + BitField<39, 3, IR::Pred> pred; + BitField<42, 1, u64> neg_pred; + BitField<43, 1, u64> x; + BitField<44, 1, u64> bf; + BitField<45, 2, BooleanOp> bop; + BitField<48, 1, u64> is_signed; + BitField<49, 3, ComparisonOp> compare_op; + } const iset{insn}; + + if (iset.x != 0) { + throw NotImplementedException("ISET.X"); + } + + const IR::U32 src_reg{v.X(iset.src_reg)}; + const bool is_signed{iset.is_signed != 0}; + IR::U1 pred{v.ir.GetPred(iset.pred)}; + if (iset.neg_pred != 0) { + pred = v.ir.LogicalNot(pred); + } + const IR::U1 cmp_result{IntegerCompare(v, src_reg, src_a, iset.compare_op, is_signed)}; + const IR::U1 bop_result{PredicateCombine(v, cmp_result, pred, iset.bop)}; + + const IR::U32 one_mask{v.ir.Imm32(-1)}; + const IR::U32 fp_one{v.ir.Imm32(0x3f800000)}; + const IR::U32 fail_result{v.ir.Imm32(0)}; + const IR::U32 pass_result{iset.bf == 0 ? one_mask : fp_one}; + + const IR::U32 result{v.ir.Select(bop_result, pass_result, fail_result)}; + + v.X(iset.dest_reg, result); +} +} // Anonymous namespace + +void TranslatorVisitor::ISET_reg(u64 insn) { + ISET(*this, insn, GetReg20(insn)); +} + +void TranslatorVisitor::ISET_cbuf(u64 insn) { + ISET(*this, insn, GetCbuf(insn)); +} + +void TranslatorVisitor::ISET_imm(u64 insn) { + ISET(*this, insn, GetImm20(insn)); +} + +} // namespace Shader::Maxwell |