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//===- yaml2obj - Convert YAML to a binary object file --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This program takes a YAML description of an object file and outputs the
// binary equivalent.
//
// This is used for writing tests that require binary files.
//
//===----------------------------------------------------------------------===//
#include "yaml2obj.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ObjectYAML/ObjectYAML.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include <system_error>
using namespace llvm;
static cl::opt<std::string>
Input(cl::Positional, cl::desc("<input>"), cl::init("-"));
cl::opt<unsigned>
DocNum("docnum", cl::init(1),
cl::desc("Read specified document from input (default = 1)"));
static cl::opt<std::string> OutputFilename("o", cl::desc("Output filename"),
cl::value_desc("filename"));
LLVM_ATTRIBUTE_NORETURN static void error(Twine Message) {
errs() << Message << "\n";
exit(1);
}
static int convertYAML(yaml::Input &YIn, raw_ostream &Out) {
unsigned CurDocNum = 0;
do {
if (++CurDocNum == DocNum) {
yaml::YamlObjectFile Doc;
YIn >> Doc;
if (YIn.error())
error("yaml2obj: Failed to parse YAML file!");
if (Doc.Elf)
return yaml2elf(*Doc.Elf, Out);
if (Doc.Coff)
return yaml2coff(*Doc.Coff, Out);
if (Doc.MachO || Doc.FatMachO)
return yaml2macho(Doc, Out);
if (Doc.Wasm)
return yaml2wasm(*Doc.Wasm, Out);
error("yaml2obj: Unknown document type!");
}
} while (YIn.nextDocument());
error("yaml2obj: Cannot find the " + Twine(DocNum) +
llvm::getOrdinalSuffix(DocNum) + " document");
}
int main(int argc, char **argv) {
InitLLVM X(argc, argv);
cl::ParseCommandLineOptions(argc, argv);
if (OutputFilename.empty())
OutputFilename = "-";
std::error_code EC;
std::unique_ptr<ToolOutputFile> Out(
new ToolOutputFile(OutputFilename, EC, sys::fs::F_None));
if (EC)
error("yaml2obj: Error opening '" + OutputFilename + "': " + EC.message());
ErrorOr<std::unique_ptr<MemoryBuffer>> Buf =
MemoryBuffer::getFileOrSTDIN(Input);
if (!Buf)
return 1;
yaml::Input YIn(Buf.get()->getBuffer());
int Res = convertYAML(YIn, Out->os());
if (Res == 0)
Out->keep();
Out->os().flush();
return Res;
}
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