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//===- lib/DebugInfo/Symbolize/DIPrinter.cpp ------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the DIPrinter class, which is responsible for printing
// structures defined in DebugInfo/DIContext.h
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/Symbolize/DIPrinter.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/DIContext.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cmath>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
namespace llvm {
namespace symbolize {
void PlainPrinterBase::printHeader(uint64_t Address) {
if (Config.PrintAddress) {
OS << "0x";
OS.write_hex(Address);
StringRef Delimiter = Config.Pretty ? ": " : "\n";
OS << Delimiter;
}
}
// Prints source code around in the FileName the Line.
void PlainPrinterBase::printContext(StringRef FileName, int64_t Line) {
if (Config.SourceContextLines <= 0)
return;
ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
MemoryBuffer::getFile(FileName);
if (!BufOrErr)
return;
std::unique_ptr<MemoryBuffer> Buf = std::move(BufOrErr.get());
int64_t FirstLine =
std::max(static_cast<int64_t>(1), Line - Config.SourceContextLines / 2);
int64_t LastLine = FirstLine + Config.SourceContextLines;
size_t MaxLineNumberWidth = std::ceil(std::log10(LastLine));
for (line_iterator I = line_iterator(*Buf, false);
!I.is_at_eof() && I.line_number() <= LastLine; ++I) {
int64_t L = I.line_number();
if (L >= FirstLine && L <= LastLine) {
OS << format_decimal(L, MaxLineNumberWidth);
if (L == Line)
OS << " >: ";
else
OS << " : ";
OS << *I << "\n";
}
}
}
void PlainPrinterBase::printFunctionName(StringRef FunctionName, bool Inlined) {
if (Config.PrintFunctions) {
if (FunctionName == DILineInfo::BadString)
FunctionName = DILineInfo::Addr2LineBadString;
StringRef Delimiter = Config.Pretty ? " at " : "\n";
StringRef Prefix = (Config.Pretty && Inlined) ? " (inlined by) " : "";
OS << Prefix << FunctionName << Delimiter;
}
}
void LLVMPrinter::printSimpleLocation(StringRef Filename,
const DILineInfo &Info) {
OS << Filename << ':' << Info.Line << ':' << Info.Column << '\n';
printContext(Filename, Info.Line);
}
void GNUPrinter::printSimpleLocation(StringRef Filename,
const DILineInfo &Info) {
OS << Filename << ':' << Info.Line;
if (Info.Discriminator)
OS << " (discriminator " << Info.Discriminator << ')';
OS << '\n';
printContext(Filename, Info.Line);
}
void PlainPrinterBase::printVerbose(StringRef Filename,
const DILineInfo &Info) {
OS << " Filename: " << Filename << '\n';
if (Info.StartLine) {
OS << " Function start filename: " << Info.StartFileName << '\n';
OS << " Function start line: " << Info.StartLine << '\n';
}
OS << " Line: " << Info.Line << '\n';
OS << " Column: " << Info.Column << '\n';
if (Info.Discriminator)
OS << " Discriminator: " << Info.Discriminator << '\n';
}
void LLVMPrinter::printFooter() { OS << '\n'; }
void PlainPrinterBase::print(const DILineInfo &Info, bool Inlined) {
printFunctionName(Info.FunctionName, Inlined);
StringRef Filename = Info.FileName;
if (Filename == DILineInfo::BadString)
Filename = DILineInfo::Addr2LineBadString;
if (Config.Verbose)
printVerbose(Filename, Info);
else
printSimpleLocation(Filename, Info);
}
void PlainPrinterBase::print(const Request &Request, const DILineInfo &Info) {
printHeader(Request.Address);
print(Info, false);
printFooter();
}
void PlainPrinterBase::print(const Request &Request,
const DIInliningInfo &Info) {
printHeader(Request.Address);
uint32_t FramesNum = Info.getNumberOfFrames();
if (FramesNum == 0)
print(DILineInfo(), false);
else
for (uint32_t I = 0; I < FramesNum; ++I)
print(Info.getFrame(I), I > 0);
printFooter();
}
void PlainPrinterBase::print(const Request &Request, const DIGlobal &Global) {
printHeader(Request.Address);
StringRef Name = Global.Name;
if (Name == DILineInfo::BadString)
Name = DILineInfo::Addr2LineBadString;
OS << Name << "\n";
OS << Global.Start << " " << Global.Size << "\n";
printFooter();
}
void PlainPrinterBase::print(const Request &Request,
const std::vector<DILocal> &Locals) {
printHeader(Request.Address);
if (Locals.empty())
OS << DILineInfo::Addr2LineBadString << '\n';
else
for (const DILocal &L : Locals) {
if (L.FunctionName.empty())
OS << DILineInfo::Addr2LineBadString;
else
OS << L.FunctionName;
OS << '\n';
if (L.Name.empty())
OS << DILineInfo::Addr2LineBadString;
else
OS << L.Name;
OS << '\n';
if (L.DeclFile.empty())
OS << DILineInfo::Addr2LineBadString;
else
OS << L.DeclFile;
OS << ':' << L.DeclLine << '\n';
if (L.FrameOffset)
OS << *L.FrameOffset;
else
OS << DILineInfo::Addr2LineBadString;
OS << ' ';
if (L.Size)
OS << *L.Size;
else
OS << DILineInfo::Addr2LineBadString;
OS << ' ';
if (L.TagOffset)
OS << *L.TagOffset;
else
OS << DILineInfo::Addr2LineBadString;
OS << '\n';
}
printFooter();
}
void PlainPrinterBase::printInvalidCommand(const Request &Request,
const ErrorInfoBase &ErrorInfo) {
OS << ErrorInfo.message() << '\n';
}
bool PlainPrinterBase::printError(const Request &Request,
const ErrorInfoBase &ErrorInfo,
StringRef ErrorBanner) {
ES << ErrorBanner;
ErrorInfo.log(ES);
ES << '\n';
// Print an empty struct too.
return true;
}
} // end namespace symbolize
} // end namespace llvm
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