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https://git.eden-emu.dev/eden-emu/eden.git
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lizzie
fe6b6fbde5
The compiler is very smart, I trust the compiler to make a proper decoder selector rather than rolling our own. Probably mostly benefitted on PGO builds. Directly affects cache recompilation times (test with pipeline shaders OFF to force shaders to rebuild :) Also restores CCTLT so we have the full ISA (or do we? Is ISBEWR missing? - someone should run fuzzing :) Signed-off-by: lizzie <lizzie@eden-emu.dev> Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2915 Reviewed-by: MaranBr <maranbr@eden-emu.dev> Co-authored-by: lizzie <lizzie@eden-emu.dev> Co-committed-by: lizzie <lizzie@eden-emu.dev>
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <algorithm>
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#include <array>
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#include <bit>
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#include <memory>
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#include <ranges>
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#include <string_view>
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#include "common/common_types.h"
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#include "shader_recompiler/exception.h"
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#include "shader_recompiler/frontend/maxwell/decode.h"
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#include "shader_recompiler/frontend/maxwell/opcodes.h"
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namespace Shader::Maxwell {
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consteval std::pair<u64, u64> MaskValueFromEncoding(const char data[20]) noexcept {
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u64 mask = 0, value = 0, bit = u64(1) << 63;
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for (int i = 0; i < 20; ++i)
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switch (data[i]) {
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case '0':
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mask |= bit;
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bit >>= 1;
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break;
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case '1':
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mask |= bit;
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value |= bit;
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bit >>= 1;
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break;
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case '-':
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bit >>= 1;
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break;
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default:
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break;
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}
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return { mask, value };
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}
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Opcode Decode(u64 insn) {
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#define INST(name, cute, encode) \
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if (auto const p = MaskValueFromEncoding(encode); (insn & p.first) == p.second) \
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return Opcode::name;
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#include "maxwell.inc"
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#undef INST
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throw NotImplementedException("Invalid insn 0x{:016x}", insn);
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}
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} // namespace Shader::Maxwell
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