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//===- ELF AttributeParser.h - ELF Attribute Parser -------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_ELFATTRIBUTEPARSER_H
#define LLVM_SUPPORT_ELFATTRIBUTEPARSER_H
#include "ELFAttributes.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Error.h"
#include <optional>
#include <unordered_map>
namespace llvm {
class StringRef;
class ScopedPrinter;
class ELFAttributeParser {
StringRef vendor;
std::unordered_map<unsigned, unsigned> attributes;
std::unordered_map<unsigned, StringRef> attributesStr;
virtual Error handler(uint64_t tag, bool &handled) = 0;
protected:
ScopedPrinter *sw;
TagNameMap tagToStringMap;
DataExtractor de{ArrayRef<uint8_t>{}, true, 0};
DataExtractor::Cursor cursor{0};
void printAttribute(unsigned tag, unsigned value, StringRef valueDesc);
Error parseStringAttribute(const char *name, unsigned tag,
ArrayRef<const char *> strings);
Error parseAttributeList(uint32_t length);
void parseIndexList(SmallVectorImpl<uint8_t> &indexList);
Error parseSubsection(uint32_t length);
void setAttributeString(unsigned tag, StringRef value) {
attributesStr.emplace(tag, value);
}
public:
virtual ~ELFAttributeParser() { static_cast<void>(!cursor.takeError()); }
Error integerAttribute(unsigned tag);
Error stringAttribute(unsigned tag);
ELFAttributeParser(ScopedPrinter *sw, TagNameMap tagNameMap, StringRef vendor)
: vendor(vendor), sw(sw), tagToStringMap(tagNameMap) {}
ELFAttributeParser(TagNameMap tagNameMap, StringRef vendor)
: vendor(vendor), sw(nullptr), tagToStringMap(tagNameMap) {}
Error parse(ArrayRef<uint8_t> section, llvm::endianness endian);
std::optional<unsigned> getAttributeValue(unsigned tag) const {
auto I = attributes.find(tag);
if (I == attributes.end())
return std::nullopt;
return I->second;
}
std::optional<StringRef> getAttributeString(unsigned tag) const {
auto I = attributesStr.find(tag);
if (I == attributesStr.end())
return std::nullopt;
return I->second;
}
};
} // namespace llvm
#endif
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