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author | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-03-05 07:15:16 +0100 |
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committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-23 03:51:23 +0200 |
commit | 5465cb156107a27df525dfedbfd4e920b7f71253 (patch) | |
tree | 3bc5940f90e31e09820af69cd845eef92a7d7201 /src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp | |
parent | shader: Deduplicate HADD2 code (diff) | |
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Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp new file mode 100644 index 000000000..784588e83 --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp @@ -0,0 +1,100 @@ +// 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/impl.h" + +namespace Shader::Maxwell { +namespace { +void LEA_hi(TranslatorVisitor& v, u64 insn, const IR::U32& base, IR::U32 offset_hi, u64 scale, + bool neg, bool x) { + union { + u64 insn; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> offset_lo_reg; + BitField<48, 3, IR::Pred> pred; + } const lea{insn}; + + if (x) { + throw NotImplementedException("LEA.HI X"); + } + if (lea.pred != IR::Pred::PT) { + throw NotImplementedException("LEA.LO Pred"); + } + + const IR::U32 offset_lo{v.X(lea.offset_lo_reg)}; + const IR::U64 packed_offset{v.ir.PackUint2x32(v.ir.CompositeConstruct(offset_lo, offset_hi))}; + const IR::U64 offset{neg ? IR::U64{v.ir.INeg(packed_offset)} : packed_offset}; + + const s32 hi_scale{32 - static_cast<s32>(scale)}; + const IR::U64 scaled_offset{v.ir.ShiftRightLogical(offset, v.ir.Imm32(hi_scale))}; + const IR::U32 scaled_offset_w0{v.ir.CompositeExtract(v.ir.UnpackUint2x32(scaled_offset), 0)}; + + IR::U32 result{v.ir.IAdd(base, scaled_offset_w0)}; + v.X(lea.dest_reg, result); +} + +void LEA_lo(TranslatorVisitor& v, u64 insn, const IR::U32& base) { + union { + u64 insn; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> offset_lo_reg; + BitField<39, 5, u64> scale; + BitField<45, 1, u64> neg; + BitField<46, 1, u64> x; + BitField<48, 3, IR::Pred> pred; + } const lea{insn}; + if (lea.x != 0) { + throw NotImplementedException("LEA.LO X"); + } + if (lea.pred != IR::Pred::PT) { + throw NotImplementedException("LEA.LO Pred"); + } + + const IR::U32 offset_lo{v.X(lea.offset_lo_reg)}; + const s32 scale{static_cast<s32>(lea.scale)}; + const IR::U32 offset{lea.neg != 0 ? IR::U32{v.ir.INeg(offset_lo)} : offset_lo}; + const IR::U32 scaled_offset{v.ir.ShiftLeftLogical(offset, v.ir.Imm32(scale))}; + + IR::U32 result{v.ir.IAdd(base, scaled_offset)}; + v.X(lea.dest_reg, result); +} +} // Anonymous namespace + +void TranslatorVisitor::LEA_hi_reg(u64 insn) { + union { + u64 insn; + BitField<28, 5, u64> scale; + BitField<37, 1, u64> neg; + BitField<38, 1, u64> x; + } const lea{insn}; + + LEA_hi(*this, insn, GetReg20(insn), GetReg39(insn), lea.scale, lea.neg != 0, lea.x != 0); +} + +void TranslatorVisitor::LEA_hi_cbuf(u64 insn) { + union { + u64 insn; + BitField<51, 5, u64> scale; + BitField<56, 1, u64> neg; + BitField<57, 1, u64> x; + } const lea{insn}; + + LEA_hi(*this, insn, GetCbuf(insn), GetReg39(insn), lea.scale, lea.neg != 0, lea.x != 0); +} + +void TranslatorVisitor::LEA_lo_reg(u64 insn) { + LEA_lo(*this, insn, GetReg20(insn)); +} + +void TranslatorVisitor::LEA_lo_cbuf(u64 insn) { + LEA_lo(*this, insn, GetCbuf(insn)); +} + +void TranslatorVisitor::LEA_lo_imm(u64 insn) { + LEA_lo(*this, insn, GetImm20(insn)); +} + +} // namespace Shader::Maxwell |