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llvm-mirror/tools/llvm-objdump/llvm-objdump.h
Jordan Rupprecht a49fda1bba Reland [llvm-objdump] Use a counter for llvm-objdump -h instead of the section index.
This relands r374931 (reverted in r375088). It fixes 32-bit builds by using the right format string specifier for uint64_t (PRIu64) instead of `%d`.

Original description:

When listing the index in `llvm-objdump -h`, use a zero-based counter instead of the actual section index (e.g. shdr->sh_index for ELF).

While this is effectively a noop for now (except one unit test for XCOFF), the index values will change in a future patch that filters certain sections out (e.g. symbol tables). See D68669 for more context. Note: the test case in `test/tools/llvm-objdump/X86/section-index.s` already covers the case of incrementing the section index counter when sections are skipped.

Reviewers: grimar, jhenderson, espindola

Reviewed By: grimar

Subscribers: emaste, sbc100, arichardson, aheejin, arphaman, seiya, llvm-commits, MaskRay

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68848

llvm-svn: 375178
2019-10-17 21:55:43 +00:00

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6.1 KiB
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_TOOLS_LLVM_OBJDUMP_LLVM_OBJDUMP_H
#define LLVM_TOOLS_LLVM_OBJDUMP_LLVM_OBJDUMP_H
#include "llvm/DebugInfo/DIContext.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Object/Archive.h"
namespace llvm {
class StringRef;
namespace object {
class COFFObjectFile;
class COFFImportFile;
class ELFObjectFileBase;
class ELFSectionRef;
class MachOObjectFile;
class MachOUniversalBinary;
class RelocationRef;
}
extern cl::opt<bool> Demangle;
typedef std::function<bool(llvm::object::SectionRef const &)> FilterPredicate;
/// A filtered iterator for SectionRefs that skips sections based on some given
/// predicate.
class SectionFilterIterator {
public:
SectionFilterIterator(FilterPredicate P,
llvm::object::section_iterator const &I,
llvm::object::section_iterator const &E)
: Predicate(std::move(P)), Iterator(I), End(E) {
ScanPredicate();
}
const llvm::object::SectionRef &operator*() const { return *Iterator; }
SectionFilterIterator &operator++() {
++Iterator;
ScanPredicate();
return *this;
}
bool operator!=(SectionFilterIterator const &Other) const {
return Iterator != Other.Iterator;
}
private:
void ScanPredicate() {
while (Iterator != End && !Predicate(*Iterator)) {
++Iterator;
}
}
FilterPredicate Predicate;
llvm::object::section_iterator Iterator;
llvm::object::section_iterator End;
};
/// Creates an iterator range of SectionFilterIterators for a given Object and
/// predicate.
class SectionFilter {
public:
SectionFilter(FilterPredicate P, llvm::object::ObjectFile const &O)
: Predicate(std::move(P)), Object(O) {}
SectionFilterIterator begin() {
return SectionFilterIterator(Predicate, Object.section_begin(),
Object.section_end());
}
SectionFilterIterator end() {
return SectionFilterIterator(Predicate, Object.section_end(),
Object.section_end());
}
private:
FilterPredicate Predicate;
llvm::object::ObjectFile const &Object;
};
// Various helper functions.
/// Creates a SectionFilter with a standard predicate that conditionally skips
/// sections when the --section objdump flag is provided.
///
/// Idx is an optional output parameter that keeps track of which section index
/// this is. This may be different than the actual section number, as some
/// sections may be filtered (e.g. symbol tables).
SectionFilter ToolSectionFilter(llvm::object::ObjectFile const &O,
uint64_t *Idx = nullptr);
Error getELFRelocationValueString(const object::ELFObjectFileBase *Obj,
const object::RelocationRef &Rel,
llvm::SmallVectorImpl<char> &Result);
Error getCOFFRelocationValueString(const object::COFFObjectFile *Obj,
const object::RelocationRef &Rel,
llvm::SmallVectorImpl<char> &Result);
Error getWasmRelocationValueString(const object::WasmObjectFile *Obj,
const object::RelocationRef &RelRef,
llvm::SmallVectorImpl<char> &Result);
Error getMachORelocationValueString(const object::MachOObjectFile *Obj,
const object::RelocationRef &RelRef,
llvm::SmallVectorImpl<char> &Result);
uint64_t getELFSectionLMA(const object::ELFSectionRef& Sec);
bool isRelocAddressLess(object::RelocationRef A, object::RelocationRef B);
void parseInputMachO(StringRef Filename);
void parseInputMachO(object::MachOUniversalBinary *UB);
void printCOFFUnwindInfo(const object::COFFObjectFile *O);
void printMachOUnwindInfo(const object::MachOObjectFile *O);
void printMachOExportsTrie(const object::MachOObjectFile *O);
void printMachORebaseTable(object::MachOObjectFile *O);
void printMachOBindTable(object::MachOObjectFile *O);
void printMachOLazyBindTable(object::MachOObjectFile *O);
void printMachOWeakBindTable(object::MachOObjectFile *O);
void printELFFileHeader(const object::ObjectFile *O);
void printELFDynamicSection(const object::ObjectFile *Obj);
void printELFSymbolVersionInfo(const object::ObjectFile *Obj);
void printCOFFFileHeader(const object::ObjectFile *O);
void printCOFFSymbolTable(const object::COFFImportFile *I);
void printCOFFSymbolTable(const object::COFFObjectFile *O);
void printMachOFileHeader(const object::ObjectFile *O);
void printMachOLoadCommands(const object::ObjectFile *O);
void printWasmFileHeader(const object::ObjectFile *O);
void printExportsTrie(const object::ObjectFile *O);
void printRebaseTable(object::ObjectFile *O);
void printBindTable(object::ObjectFile *O);
void printLazyBindTable(object::ObjectFile *O);
void printWeakBindTable(object::ObjectFile *O);
void printRawClangAST(const object::ObjectFile *O);
void printRelocations(const object::ObjectFile *O);
void printDynamicRelocations(const object::ObjectFile *O);
void printSectionHeaders(const object::ObjectFile *O);
void printSectionContents(const object::ObjectFile *O);
void printSymbolTable(const object::ObjectFile *O, StringRef ArchiveName,
StringRef ArchitectureName = StringRef());
LLVM_ATTRIBUTE_NORETURN void reportError(StringRef File, Twine Message);
LLVM_ATTRIBUTE_NORETURN void reportError(Error E, StringRef FileName,
StringRef ArchiveName = "",
StringRef ArchitectureName = "");
void reportWarning(Twine Message, StringRef File);
template <typename T, typename... Ts>
T unwrapOrError(Expected<T> EO, Ts &&... Args) {
if (EO)
return std::move(*EO);
reportError(EO.takeError(), std::forward<Ts>(Args)...);
}
std::string getFileNameForError(const object::Archive::Child &C,
unsigned Index);
} // end namespace llvm
#endif