mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-12 05:56:28 +00:00
105 lines
3.3 KiB
C++
105 lines
3.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
// LLVM 'LINK' UTILITY
|
|
//
|
|
// This utility may be invoked in the following manner:
|
|
// link a.bc b.bc c.bc -o x.bc
|
|
//
|
|
// Alternatively, this can be used as an 'ar' tool as well. If invoked as
|
|
// either 'ar' or 'llvm-ar', it accepts a 'rc' parameter as well.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Transforms/Linker.h"
|
|
#include "llvm/Bytecode/Reader.h"
|
|
#include "llvm/Bytecode/Writer.h"
|
|
#include "llvm/Assembly/Writer.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Method.h"
|
|
#include <fstream.h>
|
|
#include <memory>
|
|
|
|
|
|
cl::StringList InputFilenames("", "Load <arg> files, linking them together",
|
|
cl::OneOrMore);
|
|
cl::String OutputFilename("o", "Override output filename", cl::NoFlags, "-");
|
|
cl::Flag Force ("f", "Overwrite output files", cl::NoFlags, false);
|
|
cl::Flag Verbose ("v", "Print information about actions taken");
|
|
cl::Flag DumpAsm ("d", "Print assembly as linked", cl::Hidden, false);
|
|
cl::StringList LibPaths ("L", "Specify a library search path", cl::ZeroOrMore);
|
|
|
|
static inline std::auto_ptr<Module> LoadFile(const string &FN) {
|
|
string Filename = FN;
|
|
string ErrorMessage;
|
|
|
|
unsigned NextLibPathIdx = 0;
|
|
|
|
while (1) {
|
|
if (Verbose) cerr << "Loading '" << Filename << "'\n";
|
|
Module *Result = ParseBytecodeFile(Filename, &ErrorMessage);
|
|
if (Result) return std::auto_ptr<Module>(Result); // Load successful!
|
|
|
|
if (Verbose) {
|
|
cerr << "Error opening bytecode file: '" << Filename << "'";
|
|
if (ErrorMessage.size()) cerr << ": " << ErrorMessage;
|
|
cerr << endl;
|
|
}
|
|
|
|
if (NextLibPathIdx == LibPaths.size()) break;
|
|
Filename = LibPaths[NextLibPathIdx++] + "/" + FN;
|
|
}
|
|
|
|
cerr << "Could not locate bytecode file: '" << FN << "'\n";
|
|
return std::auto_ptr<Module>();
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
cl::ParseCommandLineOptions(argc, argv, " llvm linker\n");
|
|
assert(InputFilenames.size() > 0 && "OneOrMore is not working");
|
|
|
|
unsigned BaseArg = 0;
|
|
string ErrorMessage;
|
|
|
|
// TODO: TEST argv[0] for llvm-ar forms... for now, this is a huge hack.
|
|
if (InputFilenames.size() >= 3 && InputFilenames[0] == "rc" &&
|
|
OutputFilename == "-") {
|
|
BaseArg = 2;
|
|
OutputFilename = InputFilenames[1];
|
|
}
|
|
|
|
std::auto_ptr<Module> Composite(LoadFile(InputFilenames[BaseArg]));
|
|
if (Composite.get() == 0) return 1;
|
|
|
|
for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
|
|
auto_ptr<Module> M(LoadFile(InputFilenames[i]));
|
|
if (M.get() == 0) return 1;
|
|
|
|
if (Verbose) cerr << "Linking in '" << InputFilenames[i] << "'\n";
|
|
|
|
if (LinkModules(Composite.get(), M.get(), &ErrorMessage)) {
|
|
cerr << "Error linking in '" << InputFilenames[i] << "': "
|
|
<< ErrorMessage << endl;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (DumpAsm)
|
|
cerr << "Here's the assembly:\n" << Composite.get();
|
|
|
|
ostream *Out = &cout; // Default to printing to stdout...
|
|
if (OutputFilename != "-") {
|
|
Out = new ofstream(OutputFilename.c_str(),
|
|
(Force ? 0 : ios::noreplace)|ios::out);
|
|
if (!Out->good()) {
|
|
cerr << "Error opening '" << OutputFilename << "'!\n";
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (Verbose) cerr << "Writing bytecode...\n";
|
|
WriteBytecodeToFile(Composite.get(), *Out);
|
|
|
|
if (Out != &cout) delete Out;
|
|
return 0;
|
|
}
|