mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
142 lines
4.2 KiB
C++
142 lines
4.2 KiB
C++
//===-- llvm-dis.cpp - The low-level LLVM disassembler --------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This utility may be invoked in the following manner:
|
|
// llvm-dis [options] - Read LLVM bitcode from stdin, write asm to stdout
|
|
// llvm-dis [options] x.bc - Read LLVM bitcode from the x.bc file, write asm
|
|
// to the x.ll file.
|
|
// Options:
|
|
// --help - Output information about command line switches
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/LLVMContext.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/Bitcode/ReaderWriter.h"
|
|
#include "llvm/Assembly/AssemblyAnnotationWriter.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/PrettyStackTrace.h"
|
|
#include "llvm/Support/ToolOutputFile.h"
|
|
#include "llvm/Support/Signals.h"
|
|
#include "llvm/Support/system_error.h"
|
|
using namespace llvm;
|
|
|
|
static cl::opt<std::string>
|
|
InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
|
|
|
|
static cl::opt<std::string>
|
|
OutputFilename("o", cl::desc("Override output filename"),
|
|
cl::value_desc("filename"));
|
|
|
|
static cl::opt<bool>
|
|
Force("f", cl::desc("Enable binary output on terminals"));
|
|
|
|
static cl::opt<bool>
|
|
DontPrint("disable-output", cl::desc("Don't output the .ll file"), cl::Hidden);
|
|
|
|
static cl::opt<bool>
|
|
ShowAnnotations("show-annotations",
|
|
cl::desc("Add informational comments to the .ll file"));
|
|
|
|
namespace {
|
|
|
|
class CommentWriter : public AssemblyAnnotationWriter {
|
|
public:
|
|
void emitFunctionAnnot(const Function *F,
|
|
formatted_raw_ostream &OS) {
|
|
OS << "; [#uses=" << F->getNumUses() << ']'; // Output # uses
|
|
OS << '\n';
|
|
}
|
|
void printInfoComment(const Value &V, formatted_raw_ostream &OS) {
|
|
if (V.getType()->isVoidTy()) return;
|
|
|
|
OS.PadToColumn(50);
|
|
OS << "; [#uses=" << V.getNumUses() << ']'; // Output # uses
|
|
}
|
|
};
|
|
|
|
} // end anon namespace
|
|
|
|
int main(int argc, char **argv) {
|
|
// Print a stack trace if we signal out.
|
|
sys::PrintStackTraceOnErrorSignal();
|
|
PrettyStackTraceProgram X(argc, argv);
|
|
|
|
LLVMContext &Context = getGlobalContext();
|
|
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
|
|
|
|
|
|
cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
|
|
|
|
std::string ErrorMessage;
|
|
std::auto_ptr<Module> M;
|
|
|
|
{
|
|
OwningPtr<MemoryBuffer> BufferPtr;
|
|
if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr))
|
|
ErrorMessage = ec.message();
|
|
else
|
|
M.reset(ParseBitcodeFile(BufferPtr.get(), Context, &ErrorMessage));
|
|
}
|
|
|
|
if (M.get() == 0) {
|
|
errs() << argv[0] << ": ";
|
|
if (ErrorMessage.size())
|
|
errs() << ErrorMessage << "\n";
|
|
else
|
|
errs() << "bitcode didn't read correctly.\n";
|
|
return 1;
|
|
}
|
|
|
|
// Just use stdout. We won't actually print anything on it.
|
|
if (DontPrint)
|
|
OutputFilename = "-";
|
|
|
|
if (OutputFilename.empty()) { // Unspecified output, infer it.
|
|
if (InputFilename == "-") {
|
|
OutputFilename = "-";
|
|
} else {
|
|
const std::string &IFN = InputFilename;
|
|
int Len = IFN.length();
|
|
// If the source ends in .bc, strip it off.
|
|
if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c')
|
|
OutputFilename = std::string(IFN.begin(), IFN.end()-3)+".ll";
|
|
else
|
|
OutputFilename = IFN+".ll";
|
|
}
|
|
}
|
|
|
|
std::string ErrorInfo;
|
|
OwningPtr<tool_output_file>
|
|
Out(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
|
|
raw_fd_ostream::F_Binary));
|
|
if (!ErrorInfo.empty()) {
|
|
errs() << ErrorInfo << '\n';
|
|
return 1;
|
|
}
|
|
|
|
OwningPtr<AssemblyAnnotationWriter> Annotator;
|
|
if (ShowAnnotations)
|
|
Annotator.reset(new CommentWriter());
|
|
|
|
// All that llvm-dis does is write the assembly to a file.
|
|
if (!DontPrint)
|
|
M->print(Out->os(), Annotator.get());
|
|
|
|
// Declare success.
|
|
Out->keep();
|
|
|
|
return 0;
|
|
}
|
|
|