mirror of
https://github.com/KytyPS5/KytyPS5.git
synced 2026-10-20 02:47:02 +02:00
nmzik
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
#include "graphics/shader/recompiler/ExportOps.h"
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#include <fmt/format.h>
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namespace Libs::Graphics::ShaderRecompiler::Decoder {
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bool DecodeExp(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index, Instruction& inst,
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std::string* error) {
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if (word_index + 1u >= code.size()) {
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if (error != nullptr) {
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*error = fmt::format("truncated EXP instruction at pc 0x{:08x}", pc);
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}
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return false;
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}
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const uint32_t word0 = code[word_index];
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const uint32_t word1 = code[word_index + 1u];
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const uint32_t target = (word0 >> 4u) & 0x3fu;
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const uint32_t en = word0 & 0xfu;
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inst.pc = pc;
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inst.word = word0;
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inst.word_count = 2;
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inst.family = Family::EXP;
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inst.opcode_id = target;
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inst.opcode = Opcode::Exp;
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inst.exp.target = target;
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inst.exp.en = en;
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inst.exp.compr = ((word0 >> 10u) & 1u) != 0;
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inst.exp.done = ((word0 >> 11u) & 1u) != 0;
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inst.exp.vm = ((word0 >> 12u) & 1u) != 0;
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SetRawWords(inst, code, word_index, 2);
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if (!DecodeVectorGpr(word1 & 0xffu, inst.src0, error) ||
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!DecodeVectorGpr((word1 >> 8u) & 0xffu, inst.src1, error) ||
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!DecodeVectorGpr((word1 >> 16u) & 0xffu, inst.src2, error) ||
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!DecodeVectorGpr((word1 >> 24u) & 0xffu, inst.src3, error)) {
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return false;
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}
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if (target == 0x14u && inst.exp.done && en == 0x1u) {
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inst.src_count = 1u;
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} else {
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inst.src_count = inst.exp.compr ? 2u : 4u;
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}
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if (en == 0u) {
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inst.src_count = 0;
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}
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return true;
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}
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} // namespace Libs::Graphics::ShaderRecompiler::Decoder
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