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//===- BytesOutputStyle.cpp ----------------------------------- *- C++ --*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "BytesOutputStyle.h"
#include "StreamUtil.h"
#include "llvm-pdbutil.h"
#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
#include "llvm/DebugInfo/PDB/Native/RawError.h"
#include "llvm/Support/BinaryStreamReader.h"
#include "llvm/Support/FormatAdapters.h"
#include "llvm/Support/FormatVariadic.h"
using namespace llvm;
using namespace llvm::msf;
using namespace llvm::pdb;
namespace {
struct StreamSpec {
uint32_t SI = 0;
uint32_t Begin = 0;
uint32_t Size = 0;
};
} // namespace
static Expected<StreamSpec> parseStreamSpec(StringRef Str) {
StreamSpec Result;
if (Str.consumeInteger(0, Result.SI))
return make_error<RawError>(raw_error_code::invalid_format,
"Invalid Stream Specification");
if (Str.consume_front(":")) {
if (Str.consumeInteger(0, Result.Begin))
return make_error<RawError>(raw_error_code::invalid_format,
"Invalid Stream Specification");
}
if (Str.consume_front("@")) {
if (Str.consumeInteger(0, Result.Size))
return make_error<RawError>(raw_error_code::invalid_format,
"Invalid Stream Specification");
}
if (!Str.empty())
return make_error<RawError>(raw_error_code::invalid_format,
"Invalid Stream Specification");
return Result;
}
static SmallVector<StreamSpec, 2> parseStreamSpecs(LinePrinter &P) {
SmallVector<StreamSpec, 2> Result;
for (auto &Str : opts::bytes::DumpStreamData) {
auto ESS = parseStreamSpec(Str);
if (!ESS) {
P.formatLine("Error parsing stream spec {0}: {1}", Str,
toString(ESS.takeError()));
continue;
}
Result.push_back(*ESS);
}
return Result;
}
static void printHeader(LinePrinter &P, const Twine &S) {
P.NewLine();
P.formatLine("{0,=60}", S);
P.formatLine("{0}", fmt_repeat('=', 60));
}
BytesOutputStyle::BytesOutputStyle(PDBFile &File)
: File(File), P(2, false, outs()) {}
Error BytesOutputStyle::dump() {
if (opts::bytes::DumpBlockRange.hasValue()) {
auto &R = *opts::bytes::DumpBlockRange;
uint32_t Max = R.Max.getValueOr(R.Min);
if (Max < R.Min)
return make_error<StringError>(
"Invalid block range specified. Max < Min",
inconvertibleErrorCode());
if (Max >= File.getBlockCount())
return make_error<StringError>(
"Invalid block range specified. Requested block out of bounds",
inconvertibleErrorCode());
dumpBlockRanges(R.Min, Max);
P.NewLine();
}
if (!opts::bytes::DumpStreamData.empty()) {
dumpStreamBytes();
P.NewLine();
}
return Error::success();
}
void BytesOutputStyle::dumpBlockRanges(uint32_t Min, uint32_t Max) {
printHeader(P, "MSF Blocks");
AutoIndent Indent(P);
for (uint32_t I = Min; I <= Max; ++I) {
uint64_t Base = I;
Base *= File.getBlockSize();
auto ExpectedData = File.getBlockData(I, File.getBlockSize());
if (!ExpectedData) {
P.formatLine("Could not get block {0}. Reason = {1}", I,
toString(ExpectedData.takeError()));
continue;
}
std::string Label = formatv("Block {0}", I).str();
P.formatBinary(Label, *ExpectedData, Base, 0);
}
}
void BytesOutputStyle::dumpStreamBytes() {
if (StreamPurposes.empty())
discoverStreamPurposes(File, StreamPurposes);
printHeader(P, "Stream Data");
ExitOnError Err("Unexpected error reading stream data");
auto Specs = parseStreamSpecs(P);
for (const auto &Spec : Specs) {
uint32_t End = 0;
AutoIndent Indent(P);
if (Spec.SI >= File.getNumStreams()) {
P.formatLine("Stream {0}: Not present", Spec.SI);
continue;
}
auto S = MappedBlockStream::createIndexedStream(
File.getMsfLayout(), File.getMsfBuffer(), Spec.SI, File.getAllocator());
if (!S) {
P.NewLine();
P.formatLine("Stream {0}: Not present", Spec.SI);
continue;
}
if (Spec.Size == 0)
End = S->getLength();
else
End = std::min(Spec.Begin + Spec.Size, S->getLength());
uint32_t Size = End - Spec.Begin;
P.formatLine("Stream {0} ({1:N} bytes): {2}", Spec.SI, S->getLength(),
StreamPurposes[Spec.SI]);
AutoIndent Indent2(P);
BinaryStreamReader R(*S);
ArrayRef<uint8_t> StreamData;
Err(R.readBytes(StreamData, S->getLength()));
StreamData = StreamData.slice(Spec.Begin, Size);
P.formatBinary("Data", StreamData, Spec.Begin);
}
}
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