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