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9cf90e65d1
Summary: Our YAML library's handling of tags isn't perfect, but it is good enough to get rid of the need for the --format argument to yaml2obj. This patch does exactly that. Instead of requiring --format, it infers the format based on the tags found in the object file. The supported tags are: !ELF !COFF !mach-o !fat-mach-o I have a corresponding patch that is quite large that fixes up all the in-tree test cases. Reviewers: rafael, Bigcheese, compnerd, silvas Subscribers: compnerd, llvm-commits Differential Revision: http://reviews.llvm.org/D21711 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273915 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
//===- yaml2obj - Convert YAML to a binary object file --------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This program takes a YAML description of an object file and outputs the
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// binary equivalent.
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//
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// This is used for writing tests that require binary files.
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//
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//===----------------------------------------------------------------------===//
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#include "yaml2obj.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ObjectYAML/ObjectYAML.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include "llvm/Support/YAMLTraits.h"
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#include "llvm/Support/raw_ostream.h"
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#include <system_error>
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using namespace llvm;
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static cl::opt<std::string>
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Input(cl::Positional, cl::desc("<input>"), cl::init("-"));
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cl::opt<unsigned>
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DocNum("docnum", cl::init(1),
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cl::desc("Read specified document from input (default = 1)"));
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static cl::opt<std::string> OutputFilename("o", cl::desc("Output filename"),
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cl::value_desc("filename"));
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static int convertYAML(yaml::Input &YIn, raw_ostream &Out) {
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unsigned CurDocNum = 0;
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do {
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if (++CurDocNum == DocNum) {
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yaml::YamlObjectFile Doc;
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YIn >> Doc;
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if (YIn.error()) {
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errs() << "yaml2obj: Failed to parse YAML file!\n";
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return 1;
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}
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if (Doc.Elf)
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return yaml2elf(*Doc.Elf, Out);
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if (Doc.Coff)
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return yaml2coff(*Doc.Coff, Out);
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if (Doc.MachO || Doc.FatMachO)
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return yaml2macho(Doc, Out);
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errs() << "yaml2obj: Unknown document type!\n";
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return 1;
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}
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} while (YIn.nextDocument());
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errs() << "yaml2obj: Cannot find the " << DocNum
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<< llvm::getOrdinalSuffix(DocNum) << " document\n";
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return 1;
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}
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int main(int argc, char **argv) {
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cl::ParseCommandLineOptions(argc, argv);
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sys::PrintStackTraceOnErrorSignal(argv[0]);
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PrettyStackTraceProgram X(argc, argv);
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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if (OutputFilename.empty())
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OutputFilename = "-";
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std::error_code EC;
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std::unique_ptr<tool_output_file> Out(
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new tool_output_file(OutputFilename, EC, sys::fs::F_None));
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if (EC) {
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errs() << EC.message() << '\n';
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return 1;
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}
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ErrorOr<std::unique_ptr<MemoryBuffer>> Buf =
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MemoryBuffer::getFileOrSTDIN(Input);
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if (!Buf)
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return 1;
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yaml::Input YIn(Buf.get()->getBuffer());
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int Res = convertYAML(YIn, Out->os());
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if (Res == 0)
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Out->keep();
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return Res;
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}
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