2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
//===- lib/DebugInfo/Symbolize/DIPrinter.cpp ------------------------------===//
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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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//
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// This file defines the DIPrinter class, which is responsible for printing
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// structures defined in DebugInfo/DIContext.h
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/Symbolize/DIPrinter.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/DebugInfo/DIContext.h"
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#include "llvm/Support/ErrorOr.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/LineIterator.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cmath>
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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#include <string>
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namespace llvm {
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namespace symbolize {
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// By default, DILineInfo contains "<invalid>" for function/filename it
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// cannot fetch. We replace it to "??" to make our output closer to addr2line.
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static const char kDILineInfoBadString[] = "<invalid>";
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static const char kBadString[] = "??";
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// Prints source code around in the FileName the Line.
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void DIPrinter::printContext(const std::string &FileName, int64_t Line) {
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if (PrintSourceContext <= 0)
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return;
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ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
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MemoryBuffer::getFile(FileName);
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if (!BufOrErr)
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return;
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std::unique_ptr<MemoryBuffer> Buf = std::move(BufOrErr.get());
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int64_t FirstLine =
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std::max(static_cast<int64_t>(1), Line - PrintSourceContext / 2);
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int64_t LastLine = FirstLine + PrintSourceContext;
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size_t MaxLineNumberWidth = std::ceil(std::log10(LastLine));
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for (line_iterator I = line_iterator(*Buf, false);
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!I.is_at_eof() && I.line_number() <= LastLine; ++I) {
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int64_t L = I.line_number();
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if (L >= FirstLine && L <= LastLine) {
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OS << format_decimal(L, MaxLineNumberWidth);
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if (L == Line)
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OS << " >: ";
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else
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OS << " : ";
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OS << *I << "\n";
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}
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}
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}
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void DIPrinter::print(const DILineInfo &Info, bool Inlined) {
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if (PrintFunctionNames) {
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std::string FunctionName = Info.FunctionName;
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if (FunctionName == kDILineInfoBadString)
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FunctionName = kBadString;
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StringRef Delimiter = PrintPretty ? " at " : "\n";
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StringRef Prefix = (PrintPretty && Inlined) ? " (inlined by) " : "";
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OS << Prefix << FunctionName << Delimiter;
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}
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std::string Filename = Info.FileName;
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if (Filename == kDILineInfoBadString)
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Filename = kBadString;
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if (!Verbose) {
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OS << Filename << ":" << Info.Line << ":" << Info.Column << "\n";
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printContext(Filename, Info.Line);
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return;
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}
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OS << " Filename: " << Filename << "\n";
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if (Info.StartLine)
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OS << "Function start line: " << Info.StartLine << "\n";
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OS << " Line: " << Info.Line << "\n";
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OS << " Column: " << Info.Column << "\n";
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if (Info.Discriminator)
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OS << " Discriminator: " << Info.Discriminator << "\n";
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}
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DIPrinter &DIPrinter::operator<<(const DILineInfo &Info) {
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print(Info, false);
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return *this;
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}
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DIPrinter &DIPrinter::operator<<(const DIInliningInfo &Info) {
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uint32_t FramesNum = Info.getNumberOfFrames();
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if (FramesNum == 0) {
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print(DILineInfo(), false);
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return *this;
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}
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for (uint32_t i = 0; i < FramesNum; i++)
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print(Info.getFrame(i), i > 0);
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return *this;
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}
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DIPrinter &DIPrinter::operator<<(const DIGlobal &Global) {
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std::string Name = Global.Name;
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if (Name == kDILineInfoBadString)
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Name = kBadString;
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OS << Name << "\n";
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OS << Global.Start << " " << Global.Size << "\n";
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return *this;
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}
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} // end namespace symbolize
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} // end namespace llvm
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