mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
04fc8c8d33
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81858 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
3.4 KiB
C++
112 lines
3.4 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/Bitcode/ReaderWriter.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/PrettyStackTrace.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/System/Signals.h"
|
|
#include <memory>
|
|
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);
|
|
|
|
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;
|
|
|
|
if (MemoryBuffer *Buffer
|
|
= MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage)) {
|
|
M.reset(ParseBitcodeFile(Buffer, Context, &ErrorMessage));
|
|
delete Buffer;
|
|
}
|
|
|
|
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";
|
|
}
|
|
}
|
|
|
|
// Make sure that the Out file gets unlinked from the disk if we get a
|
|
// SIGINT.
|
|
if (OutputFilename != "-")
|
|
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
|
|
|
|
std::string ErrorInfo;
|
|
std::auto_ptr<raw_fd_ostream>
|
|
Out(new raw_fd_ostream(OutputFilename.c_str(), ErrorInfo,
|
|
raw_fd_ostream::F_Binary));
|
|
if (!ErrorInfo.empty()) {
|
|
errs() << ErrorInfo << '\n';
|
|
return 1;
|
|
}
|
|
|
|
// All that llvm-dis does is write the assembly to a file.
|
|
if (!DontPrint)
|
|
*Out << *M;
|
|
|
|
return 0;
|
|
}
|
|
|