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shader: Implement LEA

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This commit is contained in:
ameerj 2021-03-05 01:15:16 -05:00
parent d1edc16ba8
commit 5465cb1561
9 changed files with 136 additions and 29 deletions
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100
src/shader_recompiler/frontend/maxwell/translate/impl/load_effective_address.cpp Normal file
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@ -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

20
src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
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@ -437,26 +437,6 @@ void TranslatorVisitor::LDS(u64) {
ThrowNotImplemented(Opcode::LDS);
}
void TranslatorVisitor::LEA_hi_reg(u64) {
ThrowNotImplemented(Opcode::LEA_hi_reg);
}
void TranslatorVisitor::LEA_hi_cbuf(u64) {
ThrowNotImplemented(Opcode::LEA_hi_cbuf);
}
void TranslatorVisitor::LEA_lo_reg(u64) {
ThrowNotImplemented(Opcode::LEA_lo_reg);
}
void TranslatorVisitor::LEA_lo_cbuf(u64) {
ThrowNotImplemented(Opcode::LEA_lo_cbuf);
}
void TranslatorVisitor::LEA_lo_imm(u64) {
ThrowNotImplemented(Opcode::LEA_lo_imm);
}
void TranslatorVisitor::LEPC(u64) {
ThrowNotImplemented(Opcode::LEPC);
}