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/*========================== begin_copyright_notice ============================
Copyright (C) 2023 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "common/IGCSPIRVParser.h"
#include "Probe/Assertion.h"
using namespace IGC;
std::vector<std::string> SPIRVParser::getEntryPointNames(const StringRef binary) {
auto getWord = [&binary](uint32_t offsetInWords) {
IGC_ASSERT(offsetInWords < (binary.size() / 4));
const uint32_t result = *(reinterpret_cast<const uint32_t *>(binary.data() + offsetInWords * 4));
return result;
};
constexpr uint32_t SPIRVMagicNumber = 0x07230203;
constexpr uint16_t OpEntryPoint = 15;
uint32_t offsetInWords = 0;
offsetInWords += 5; // skip header
std::vector<std::string> entryPointNames;
while ((offsetInWords + 1) * 4 < binary.size()) {
uint32_t opFirstWord = getWord(offsetInWords);
uint16_t opWordsCount = opFirstWord >> 16;
uint16_t opCode = opFirstWord & 0xffff;
if (opCode == OpEntryPoint) {
size_t nameLength = 0;
while (binary.data()[(offsetInWords + 3) * 4 + nameLength])
nameLength++;
std::string name = binary.substr((offsetInWords + 3) * 4, nameLength).str();
entryPointNames.push_back(name);
}
offsetInWords += opWordsCount; // skip instruction
}
return entryPointNames;
}
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