diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp new file mode 100644 index 000000000..39becf93c --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp @@ -0,0 +1,85 @@ +// 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 { +enum class Mode : u64 { + Default, + IL, + IS, + ISL, +}; + +enum class Size : u64 { + U8, + S8, + U16, + S16, + B32, + B64, +}; + +std::pair<IR::U32, IR::U32> Slot(IR::IREmitter& ir, Mode mode, const IR::U32& imm_index, + const IR::U32& reg, const IR::U32& imm) { + switch (mode) { + case Mode::Default: + return {imm_index, ir.IAdd(reg, imm)}; + default: + break; + } + throw NotImplementedException("Mode {}", mode); +} +} // Anonymous namespace + +void TranslatorVisitor::LDC(u64 insn) { + union { + u64 raw; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> src_reg; + BitField<20, 16, s64> offset; + BitField<36, 5, u64> index; + BitField<44, 2, Mode> mode; + BitField<48, 3, Size> size; + } const ldc{insn}; + + const IR::U32 imm_index{ir.Imm32(static_cast<u32>(ldc.index))}; + const IR::U32 reg{X(ldc.src_reg)}; + const IR::U32 imm{ir.Imm32(static_cast<s32>(ldc.offset))}; + const auto [index, offset]{Slot(ir, ldc.mode, imm_index, reg, imm)}; + switch (ldc.size) { + case Size::U8: + X(ldc.dest_reg, ir.GetCbuf(index, offset, 8, false)); + break; + case Size::S8: + X(ldc.dest_reg, ir.GetCbuf(index, offset, 8, true)); + break; + case Size::U16: + X(ldc.dest_reg, ir.GetCbuf(index, offset, 16, false)); + break; + case Size::S16: + X(ldc.dest_reg, ir.GetCbuf(index, offset, 16, true)); + break; + case Size::B32: + X(ldc.dest_reg, ir.GetCbuf(index, offset, 32, false)); + break; + case Size::B64: { + if (!IR::IsAligned(ldc.dest_reg, 2)) { + throw NotImplementedException("Unaligned destination register"); + } + const IR::Value vector{ir.UnpackUint2x32(ir.GetCbuf(index, offset, 64, false))}; + for (int i = 0; i < 2; ++i) { + X(ldc.dest_reg + i, IR::U32{ir.CompositeExtract(vector, i)}); + } + break; + } + default: + throw NotImplementedException("Invalid size {}", ldc.size.Value()); + } +} + +} // namespace Shader::Maxwell |