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llvm-mirror/lib/DebugInfo/CodeView/StringsAndChecksums.cpp
Zachary Turner fa9d44b037 [llvm-pdbutil] Support dumping CodeView from object files.
We have llvm-readobj for dumping CodeView from object files, and
llvm-pdbutil has always been more focused on PDB.  However,
llvm-pdbutil has a lot of useful options for summarizing debug
information in aggregate and presenting high level statistical
views.  Furthermore, it's arguably better as a testing tool since
we don't have to write tests to conform to a state-machine like
structure where you match multiple lines in succession, each
depending on a previous match.  llvm-pdbutil dumps much more
concisely, so it's possible to use single-line matches in many
cases where as with readobj tests you have to use multi-line
matches with an implicit state machine.

Because of this, I'm adding object file support to llvm-pdbutil.
In fact, this mirrors the cvdump tool from Microsoft, which also
supports both object files and pdb files.  In the future we could
perhaps rename this tool llvm-cvutil.

In the meantime, this allows us to deep dive into object files
the same way we already can with PDB files.

llvm-svn: 312358
2017-09-01 20:06:56 +00:00

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2.6 KiB
C++

//===- StringsAndChecksums.cpp --------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/StringsAndChecksums.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/DebugInfo/CodeView/CodeView.h"
#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
#include "llvm/Support/Error.h"
#include <cassert>
using namespace llvm;
using namespace llvm::codeview;
StringsAndChecksumsRef::StringsAndChecksumsRef() = default;
StringsAndChecksumsRef::StringsAndChecksumsRef(
const DebugStringTableSubsectionRef &Strings)
: Strings(&Strings) {}
StringsAndChecksumsRef::StringsAndChecksumsRef(
const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &Checksums)
: Strings(&Strings), Checksums(&Checksums) {}
void StringsAndChecksumsRef::initializeStrings(
const DebugSubsectionRecord &SR) {
assert(SR.kind() == DebugSubsectionKind::StringTable);
assert(!Strings && "Found a string table even though we already have one!");
OwnedStrings = std::make_shared<DebugStringTableSubsectionRef>();
consumeError(OwnedStrings->initialize(SR.getRecordData()));
Strings = OwnedStrings.get();
}
void StringsAndChecksumsRef::reset() {
resetStrings();
resetChecksums();
}
void StringsAndChecksumsRef::resetStrings() {
OwnedStrings.reset();
Strings = nullptr;
}
void StringsAndChecksumsRef::resetChecksums() {
OwnedChecksums.reset();
Checksums = nullptr;
}
void StringsAndChecksumsRef::setStrings(
const DebugStringTableSubsectionRef &StringsRef) {
OwnedStrings = std::make_shared<DebugStringTableSubsectionRef>();
*OwnedStrings = StringsRef;
Strings = OwnedStrings.get();
}
void StringsAndChecksumsRef::setChecksums(
const DebugChecksumsSubsectionRef &CS) {
OwnedChecksums = std::make_shared<DebugChecksumsSubsectionRef>();
*OwnedChecksums = CS;
Checksums = OwnedChecksums.get();
}
void StringsAndChecksumsRef::initializeChecksums(
const DebugSubsectionRecord &FCR) {
assert(FCR.kind() == DebugSubsectionKind::FileChecksums);
if (Checksums)
return;
OwnedChecksums = std::make_shared<DebugChecksumsSubsectionRef>();
consumeError(OwnedChecksums->initialize(FCR.getRecordData()));
Checksums = OwnedChecksums.get();
}