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https://github.com/RPCS3/llvm-mirror.git
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53f0d68f87
This is conventional command-line tool behavior. -f now just means "enable binary output on terminals". Add a -f option to llvm-extract and llvm-link, for consistency. Remove F_Force from raw_fd_ostream and enable overwriting and truncating by default. Introduce an F_Excl flag to permit users to enable a failure when the file already exists. This flag is currently unused. Update Makefiles and documentation accordingly. llvm-svn: 79990
720 lines
25 KiB
C++
720 lines
25 KiB
C++
//===- llvm-ld.cpp - LLVM 'ld' compatible linker --------------------------===//
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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 utility is intended to be compatible with GCC, and follows standard
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// system 'ld' conventions. As such, the default output file is ./a.out.
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// Additionally, this program outputs a shell script that is used to invoke LLI
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// to execute the program. In this manner, the generated executable (a.out for
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// example), is directly executable, whereas the bitcode file actually lives in
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// the a.out.bc file generated by this program.
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//
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// Note that if someone (or a script) deletes the executable program generated,
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// the .bc file will be left around. Considering that this is a temporary hack,
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// I'm not too worried about this.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/LinkAllVMCore.h"
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#include "llvm/Linker.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/System/Program.h"
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#include "llvm/Module.h"
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#include "llvm/PassManager.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/Target/TargetData.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileUtilities.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/SystemUtils.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/System/Signals.h"
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#include "llvm/Config/config.h"
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#include <memory>
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#include <cstring>
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using namespace llvm;
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// Rightly this should go in a header file but it just seems such a waste.
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namespace llvm {
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extern void Optimize(Module*);
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}
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// Input/Output Options
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static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore,
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cl::desc("<input bitcode files>"));
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static cl::opt<std::string> OutputFilename("o", cl::init("a.out"),
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cl::desc("Override output filename"),
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cl::value_desc("filename"));
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static cl::opt<std::string> BitcodeOutputFilename("b", cl::init(""),
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cl::desc("Override bitcode output filename"),
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cl::value_desc("filename"));
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static cl::opt<bool> Verbose("v",
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cl::desc("Print information about actions taken"));
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static cl::list<std::string> LibPaths("L", cl::Prefix,
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cl::desc("Specify a library search path"),
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cl::value_desc("directory"));
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static cl::list<std::string> FrameworkPaths("F", cl::Prefix,
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cl::desc("Specify a framework search path"),
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cl::value_desc("directory"));
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static cl::list<std::string> Libraries("l", cl::Prefix,
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cl::desc("Specify libraries to link to"),
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cl::value_desc("library prefix"));
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static cl::list<std::string> Frameworks("framework",
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cl::desc("Specify frameworks to link to"),
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cl::value_desc("framework"));
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// Options to control the linking, optimization, and code gen processes
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static cl::opt<bool> LinkAsLibrary("link-as-library",
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cl::desc("Link the .bc files together as a library, not an executable"));
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static cl::alias Relink("r", cl::aliasopt(LinkAsLibrary),
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cl::desc("Alias for -link-as-library"));
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static cl::opt<bool> Native("native",
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cl::desc("Generate a native binary instead of a shell script"));
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static cl::opt<bool>NativeCBE("native-cbe",
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cl::desc("Generate a native binary with the C backend and GCC"));
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static cl::list<std::string> PostLinkOpts("post-link-opts",
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cl::value_desc("path"),
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cl::desc("Run one or more optimization programs after linking"));
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static cl::list<std::string> XLinker("Xlinker", cl::value_desc("option"),
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cl::desc("Pass options to the system linker"));
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// Compatibility options that llvm-ld ignores but are supported for
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// compatibility with LD
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static cl::opt<std::string> CO3("soname", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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static cl::opt<std::string> CO4("version-script", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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static cl::opt<bool> CO5("eh-frame-hdr", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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static cl::opt<std::string> CO6("h", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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static cl::opt<bool> CO7("start-group", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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static cl::opt<bool> CO8("end-group", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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static cl::opt<std::string> CO9("m", cl::Hidden,
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cl::desc("Compatibility option: ignored"));
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/// This is just for convenience so it doesn't have to be passed around
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/// everywhere.
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static std::string progname;
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/// PrintAndExit - Prints a message to standard error and exits with error code
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///
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/// Inputs:
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/// Message - The message to print to standard error.
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///
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static void PrintAndExit(const std::string &Message, int errcode = 1) {
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errs() << progname << ": " << Message << "\n";
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llvm_shutdown();
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exit(errcode);
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}
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static void PrintCommand(const std::vector<const char*> &args) {
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std::vector<const char*>::const_iterator I = args.begin(), E = args.end();
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for (; I != E; ++I)
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if (*I)
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outs() << "'" << *I << "'" << " ";
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outs() << "\n"; outs().flush();
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}
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/// CopyEnv - This function takes an array of environment variables and makes a
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/// copy of it. This copy can then be manipulated any way the caller likes
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/// without affecting the process's real environment.
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///
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/// Inputs:
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/// envp - An array of C strings containing an environment.
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///
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/// Return value:
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/// NULL - An error occurred.
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///
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/// Otherwise, a pointer to a new array of C strings is returned. Every string
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/// in the array is a duplicate of the one in the original array (i.e. we do
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/// not copy the char *'s from one array to another).
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///
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static char ** CopyEnv(char ** const envp) {
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// Count the number of entries in the old list;
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unsigned entries; // The number of entries in the old environment list
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for (entries = 0; envp[entries] != NULL; entries++)
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/*empty*/;
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// Add one more entry for the NULL pointer that ends the list.
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++entries;
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// If there are no entries at all, just return NULL.
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if (entries == 0)
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return NULL;
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// Allocate a new environment list.
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char **newenv = new char* [entries];
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if ((newenv = new char* [entries]) == NULL)
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return NULL;
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// Make a copy of the list. Don't forget the NULL that ends the list.
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entries = 0;
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while (envp[entries] != NULL) {
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newenv[entries] = new char[strlen (envp[entries]) + 1];
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strcpy (newenv[entries], envp[entries]);
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++entries;
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}
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newenv[entries] = NULL;
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return newenv;
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}
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/// RemoveEnv - Remove the specified environment variable from the environment
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/// array.
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///
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/// Inputs:
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/// name - The name of the variable to remove. It cannot be NULL.
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/// envp - The array of environment variables. It cannot be NULL.
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///
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/// Notes:
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/// This is mainly done because functions to remove items from the environment
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/// are not available across all platforms. In particular, Solaris does not
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/// seem to have an unsetenv() function or a setenv() function (or they are
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/// undocumented if they do exist).
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///
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static void RemoveEnv(const char * name, char ** const envp) {
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for (unsigned index=0; envp[index] != NULL; index++) {
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// Find the first equals sign in the array and make it an EOS character.
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char *p = strchr (envp[index], '=');
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if (p == NULL)
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continue;
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else
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*p = '\0';
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// Compare the two strings. If they are equal, zap this string.
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// Otherwise, restore it.
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if (!strcmp(name, envp[index]))
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*envp[index] = '\0';
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else
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*p = '=';
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}
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return;
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}
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/// GenerateBitcode - generates a bitcode file from the module provided
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void GenerateBitcode(Module* M, const std::string& FileName) {
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if (Verbose)
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outs() << "Generating Bitcode To " << FileName << '\n';
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// Create the output file.
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std::string ErrorInfo;
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raw_fd_ostream Out(FileName.c_str(), ErrorInfo,
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raw_fd_ostream::F_Binary);
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if (!ErrorInfo.empty())
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PrintAndExit(ErrorInfo);
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// Ensure that the bitcode file gets removed from the disk if we get a
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// terminating signal.
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sys::RemoveFileOnSignal(sys::Path(FileName));
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// Write it out
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WriteBitcodeToFile(M, Out);
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// Close the bitcode file.
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Out.close();
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}
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/// GenerateAssembly - generates a native assembly language source file from the
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/// specified bitcode file.
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///
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/// Inputs:
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/// InputFilename - The name of the input bitcode file.
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/// OutputFilename - The name of the file to generate.
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/// llc - The pathname to use for LLC.
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/// envp - The environment to use when running LLC.
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///
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/// Return non-zero value on error.
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///
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static int GenerateAssembly(const std::string &OutputFilename,
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const std::string &InputFilename,
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const sys::Path &llc,
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std::string &ErrMsg ) {
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// Run LLC to convert the bitcode file into assembly code.
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std::vector<const char*> args;
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args.push_back(llc.c_str());
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// We will use GCC to assemble the program so set the assembly syntax to AT&T,
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// regardless of what the target in the bitcode file is.
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args.push_back("-x86-asm-syntax=att");
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args.push_back("-f");
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args.push_back("-o");
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args.push_back(OutputFilename.c_str());
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args.push_back(InputFilename.c_str());
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args.push_back(0);
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if (Verbose) {
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outs() << "Generating Assembly With: \n";
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PrintCommand(args);
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}
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return sys::Program::ExecuteAndWait(llc, &args[0], 0, 0, 0, 0, &ErrMsg);
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}
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/// GenerateCFile - generates a C source file from the specified bitcode file.
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static int GenerateCFile(const std::string &OutputFile,
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const std::string &InputFile,
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const sys::Path &llc,
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std::string& ErrMsg) {
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// Run LLC to convert the bitcode file into C.
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std::vector<const char*> args;
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args.push_back(llc.c_str());
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args.push_back("-march=c");
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args.push_back("-f");
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args.push_back("-o");
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args.push_back(OutputFile.c_str());
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args.push_back(InputFile.c_str());
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args.push_back(0);
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if (Verbose) {
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outs() << "Generating C Source With: \n";
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PrintCommand(args);
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}
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return sys::Program::ExecuteAndWait(llc, &args[0], 0, 0, 0, 0, &ErrMsg);
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}
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/// GenerateNative - generates a native object file from the
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/// specified bitcode file.
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///
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/// Inputs:
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/// InputFilename - The name of the input bitcode file.
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/// OutputFilename - The name of the file to generate.
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/// NativeLinkItems - The native libraries, files, code with which to link
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/// LibPaths - The list of directories in which to find libraries.
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/// FrameworksPaths - The list of directories in which to find frameworks.
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/// Frameworks - The list of frameworks (dynamic libraries)
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/// gcc - The pathname to use for GGC.
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/// envp - A copy of the process's current environment.
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///
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/// Outputs:
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/// None.
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///
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/// Returns non-zero value on error.
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///
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static int GenerateNative(const std::string &OutputFilename,
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const std::string &InputFilename,
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const Linker::ItemList &LinkItems,
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const sys::Path &gcc, char ** const envp,
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std::string& ErrMsg) {
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// Remove these environment variables from the environment of the
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// programs that we will execute. It appears that GCC sets these
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// environment variables so that the programs it uses can configure
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// themselves identically.
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//
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// However, when we invoke GCC below, we want it to use its normal
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// configuration. Hence, we must sanitize its environment.
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char ** clean_env = CopyEnv(envp);
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if (clean_env == NULL)
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return 1;
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RemoveEnv("LIBRARY_PATH", clean_env);
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RemoveEnv("COLLECT_GCC_OPTIONS", clean_env);
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RemoveEnv("GCC_EXEC_PREFIX", clean_env);
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RemoveEnv("COMPILER_PATH", clean_env);
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RemoveEnv("COLLECT_GCC", clean_env);
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// Run GCC to assemble and link the program into native code.
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//
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// Note:
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// We can't just assemble and link the file with the system assembler
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// and linker because we don't know where to put the _start symbol.
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// GCC mysteriously knows how to do it.
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std::vector<std::string> args;
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args.push_back(gcc.c_str());
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args.push_back("-fno-strict-aliasing");
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args.push_back("-O3");
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args.push_back("-o");
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args.push_back(OutputFilename);
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args.push_back(InputFilename);
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// Add in the library and framework paths
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for (unsigned index = 0; index < LibPaths.size(); index++) {
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args.push_back("-L" + LibPaths[index]);
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}
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for (unsigned index = 0; index < FrameworkPaths.size(); index++) {
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args.push_back("-F" + FrameworkPaths[index]);
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}
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// Add the requested options
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for (unsigned index = 0; index < XLinker.size(); index++)
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args.push_back(XLinker[index]);
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// Add in the libraries to link.
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for (unsigned index = 0; index < LinkItems.size(); index++)
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if (LinkItems[index].first != "crtend") {
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if (LinkItems[index].second)
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args.push_back("-l" + LinkItems[index].first);
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else
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args.push_back(LinkItems[index].first);
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}
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// Add in frameworks to link.
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for (unsigned index = 0; index < Frameworks.size(); index++) {
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args.push_back("-framework");
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args.push_back(Frameworks[index]);
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}
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// Now that "args" owns all the std::strings for the arguments, call the c_str
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// method to get the underlying string array. We do this game so that the
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// std::string array is guaranteed to outlive the const char* array.
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std::vector<const char *> Args;
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for (unsigned i = 0, e = args.size(); i != e; ++i)
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Args.push_back(args[i].c_str());
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Args.push_back(0);
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if (Verbose) {
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outs() << "Generating Native Executable With:\n";
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PrintCommand(Args);
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}
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// Run the compiler to assembly and link together the program.
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int R = sys::Program::ExecuteAndWait(
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gcc, &Args[0], (const char**)clean_env, 0, 0, 0, &ErrMsg);
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delete [] clean_env;
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return R;
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}
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/// EmitShellScript - Output the wrapper file that invokes the JIT on the LLVM
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/// bitcode file for the program.
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static void EmitShellScript(char **argv) {
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if (Verbose)
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outs() << "Emitting Shell Script\n";
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#if defined(_WIN32) || defined(__CYGWIN__)
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// Windows doesn't support #!/bin/sh style shell scripts in .exe files. To
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// support windows systems, we copy the llvm-stub.exe executable from the
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// build tree to the destination file.
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std::string ErrMsg;
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sys::Path llvmstub = FindExecutable("llvm-stub.exe", argv[0],
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(void *)(intptr_t)&Optimize);
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if (llvmstub.isEmpty())
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PrintAndExit("Could not find llvm-stub.exe executable!");
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if (0 != sys::CopyFile(sys::Path(OutputFilename), llvmstub, &ErrMsg))
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PrintAndExit(ErrMsg);
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return;
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#endif
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// Output the script to start the program...
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std::string ErrorInfo;
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raw_fd_ostream Out2(OutputFilename.c_str(), ErrorInfo);
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if (!ErrorInfo.empty())
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PrintAndExit(ErrorInfo);
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Out2 << "#!/bin/sh\n";
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// Allow user to setenv LLVMINTERP if lli is not in their PATH.
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Out2 << "lli=${LLVMINTERP-lli}\n";
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Out2 << "exec $lli \\\n";
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// gcc accepts -l<lib> and implicitly searches /lib and /usr/lib.
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LibPaths.push_back("/lib");
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LibPaths.push_back("/usr/lib");
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LibPaths.push_back("/usr/X11R6/lib");
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// We don't need to link in libc! In fact, /usr/lib/libc.so may not be a
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// shared object at all! See RH 8: plain text.
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std::vector<std::string>::iterator libc =
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std::find(Libraries.begin(), Libraries.end(), "c");
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if (libc != Libraries.end()) Libraries.erase(libc);
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// List all the shared object (native) libraries this executable will need
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// on the command line, so that we don't have to do this manually!
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for (std::vector<std::string>::iterator i = Libraries.begin(),
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e = Libraries.end(); i != e; ++i) {
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// try explicit -L arguments first:
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sys::Path FullLibraryPath;
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for (cl::list<std::string>::const_iterator P = LibPaths.begin(),
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E = LibPaths.end(); P != E; ++P) {
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FullLibraryPath = *P;
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FullLibraryPath.appendComponent("lib" + *i);
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FullLibraryPath.appendSuffix(&(LTDL_SHLIB_EXT[1]));
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if (!FullLibraryPath.isEmpty()) {
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if (!FullLibraryPath.isDynamicLibrary()) {
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// Not a native shared library; mark as invalid
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FullLibraryPath = sys::Path();
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} else break;
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}
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}
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if (FullLibraryPath.isEmpty())
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FullLibraryPath = sys::Path::FindLibrary(*i);
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if (!FullLibraryPath.isEmpty())
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Out2 << " -load=" << FullLibraryPath.str() << " \\\n";
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}
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Out2 << " " << BitcodeOutputFilename << " ${1+\"$@\"}\n";
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Out2.close();
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}
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// BuildLinkItems -- This function generates a LinkItemList for the LinkItems
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// linker function by combining the Files and Libraries in the order they were
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// declared on the command line.
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static void BuildLinkItems(
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Linker::ItemList& Items,
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const cl::list<std::string>& Files,
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const cl::list<std::string>& Libraries) {
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// Build the list of linkage items for LinkItems.
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cl::list<std::string>::const_iterator fileIt = Files.begin();
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cl::list<std::string>::const_iterator libIt = Libraries.begin();
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int libPos = -1, filePos = -1;
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while ( libIt != Libraries.end() || fileIt != Files.end() ) {
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if (libIt != Libraries.end())
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libPos = Libraries.getPosition(libIt - Libraries.begin());
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else
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libPos = -1;
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if (fileIt != Files.end())
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filePos = Files.getPosition(fileIt - Files.begin());
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else
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filePos = -1;
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if (filePos != -1 && (libPos == -1 || filePos < libPos)) {
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// Add a source file
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Items.push_back(std::make_pair(*fileIt++, false));
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} else if (libPos != -1 && (filePos == -1 || libPos < filePos)) {
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// Add a library
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Items.push_back(std::make_pair(*libIt++, true));
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}
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}
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}
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int main(int argc, char **argv, char **envp) {
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// Print a stack trace if we signal out.
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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LLVMContext &Context = getGlobalContext();
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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try {
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// Initial global variable above for convenience printing of program name.
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progname = sys::Path(argv[0]).getBasename();
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// Parse the command line options
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cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
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// Construct a Linker (now that Verbose is set)
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Linker TheLinker(progname, OutputFilename, Context, Verbose);
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// Keep track of the native link items (versus the bitcode items)
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Linker::ItemList NativeLinkItems;
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// Add library paths to the linker
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TheLinker.addPaths(LibPaths);
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TheLinker.addSystemPaths();
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// Remove any consecutive duplicates of the same library...
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Libraries.erase(std::unique(Libraries.begin(), Libraries.end()),
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Libraries.end());
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if (LinkAsLibrary) {
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std::vector<sys::Path> Files;
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for (unsigned i = 0; i < InputFilenames.size(); ++i )
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Files.push_back(sys::Path(InputFilenames[i]));
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if (TheLinker.LinkInFiles(Files))
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return 1; // Error already printed
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// The libraries aren't linked in but are noted as "dependent" in the
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// module.
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for (cl::list<std::string>::const_iterator I = Libraries.begin(),
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E = Libraries.end(); I != E ; ++I) {
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TheLinker.getModule()->addLibrary(*I);
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}
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} else {
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// Build a list of the items from our command line
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Linker::ItemList Items;
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BuildLinkItems(Items, InputFilenames, Libraries);
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// Link all the items together
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if (TheLinker.LinkInItems(Items, NativeLinkItems) )
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return 1; // Error already printed
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}
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|
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std::auto_ptr<Module> Composite(TheLinker.releaseModule());
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|
|
// Optimize the module
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|
Optimize(Composite.get());
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|
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#if defined(_WIN32) || defined(__CYGWIN__)
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if (!LinkAsLibrary) {
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// Default to "a.exe" instead of "a.out".
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if (OutputFilename.getNumOccurrences() == 0)
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OutputFilename = "a.exe";
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|
|
// If there is no suffix add an "exe" one.
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sys::Path ExeFile( OutputFilename );
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if (ExeFile.getSuffix() == "") {
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ExeFile.appendSuffix("exe");
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OutputFilename = ExeFile.str();
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}
|
|
}
|
|
#endif
|
|
|
|
// Generate the bitcode for the optimized module.
|
|
// If -b wasn't specified, use the name specified
|
|
// with -o to construct BitcodeOutputFilename.
|
|
if (BitcodeOutputFilename.empty()) {
|
|
BitcodeOutputFilename = OutputFilename;
|
|
if (!LinkAsLibrary) BitcodeOutputFilename += ".bc";
|
|
}
|
|
|
|
GenerateBitcode(Composite.get(), BitcodeOutputFilename);
|
|
|
|
// If we are not linking a library, generate either a native executable
|
|
// or a JIT shell script, depending upon what the user wants.
|
|
if (!LinkAsLibrary) {
|
|
// If the user wants to run a post-link optimization, run it now.
|
|
if (!PostLinkOpts.empty()) {
|
|
std::vector<std::string> opts = PostLinkOpts;
|
|
for (std::vector<std::string>::iterator I = opts.begin(),
|
|
E = opts.end(); I != E; ++I) {
|
|
sys::Path prog(*I);
|
|
if (!prog.canExecute()) {
|
|
prog = sys::Program::FindProgramByName(*I);
|
|
if (prog.isEmpty())
|
|
PrintAndExit(std::string("Optimization program '") + *I +
|
|
"' is not found or not executable.");
|
|
}
|
|
// Get the program arguments
|
|
sys::Path tmp_output("opt_result");
|
|
std::string ErrMsg;
|
|
if (tmp_output.createTemporaryFileOnDisk(true, &ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
const char* args[4];
|
|
args[0] = I->c_str();
|
|
args[1] = BitcodeOutputFilename.c_str();
|
|
args[2] = tmp_output.c_str();
|
|
args[3] = 0;
|
|
if (0 == sys::Program::ExecuteAndWait(prog, args, 0,0,0,0, &ErrMsg)) {
|
|
if (tmp_output.isBitcodeFile() || tmp_output.isBitcodeFile()) {
|
|
sys::Path target(BitcodeOutputFilename);
|
|
target.eraseFromDisk();
|
|
if (tmp_output.renamePathOnDisk(target, &ErrMsg))
|
|
PrintAndExit(ErrMsg, 2);
|
|
} else
|
|
PrintAndExit("Post-link optimization output is not bitcode");
|
|
} else {
|
|
PrintAndExit(ErrMsg);
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the user wants to generate a native executable, compile it from the
|
|
// bitcode file.
|
|
//
|
|
// Otherwise, create a script that will run the bitcode through the JIT.
|
|
if (Native) {
|
|
// Name of the Assembly Language output file
|
|
sys::Path AssemblyFile ( OutputFilename);
|
|
AssemblyFile.appendSuffix("s");
|
|
|
|
// Mark the output files for removal if we get an interrupt.
|
|
sys::RemoveFileOnSignal(AssemblyFile);
|
|
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
|
|
|
|
// Determine the locations of the llc and gcc programs.
|
|
sys::Path llc = FindExecutable("llc", argv[0],
|
|
(void *)(intptr_t)&Optimize);
|
|
if (llc.isEmpty())
|
|
PrintAndExit("Failed to find llc");
|
|
|
|
sys::Path gcc = sys::Program::FindProgramByName("gcc");
|
|
if (gcc.isEmpty())
|
|
PrintAndExit("Failed to find gcc");
|
|
|
|
// Generate an assembly language file for the bitcode.
|
|
std::string ErrMsg;
|
|
if (0 != GenerateAssembly(AssemblyFile.str(), BitcodeOutputFilename,
|
|
llc, ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
if (0 != GenerateNative(OutputFilename, AssemblyFile.str(),
|
|
NativeLinkItems, gcc, envp, ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
// Remove the assembly language file.
|
|
AssemblyFile.eraseFromDisk();
|
|
} else if (NativeCBE) {
|
|
sys::Path CFile (OutputFilename);
|
|
CFile.appendSuffix("cbe.c");
|
|
|
|
// Mark the output files for removal if we get an interrupt.
|
|
sys::RemoveFileOnSignal(CFile);
|
|
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
|
|
|
|
// Determine the locations of the llc and gcc programs.
|
|
sys::Path llc = FindExecutable("llc", argv[0],
|
|
(void *)(intptr_t)&Optimize);
|
|
if (llc.isEmpty())
|
|
PrintAndExit("Failed to find llc");
|
|
|
|
sys::Path gcc = sys::Program::FindProgramByName("gcc");
|
|
if (gcc.isEmpty())
|
|
PrintAndExit("Failed to find gcc");
|
|
|
|
// Generate an assembly language file for the bitcode.
|
|
std::string ErrMsg;
|
|
if (GenerateCFile(CFile.str(), BitcodeOutputFilename, llc, ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
if (GenerateNative(OutputFilename, CFile.str(),
|
|
NativeLinkItems, gcc, envp, ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
// Remove the assembly language file.
|
|
CFile.eraseFromDisk();
|
|
|
|
} else {
|
|
EmitShellScript(argv);
|
|
}
|
|
|
|
// Make the script executable...
|
|
std::string ErrMsg;
|
|
if (sys::Path(OutputFilename).makeExecutableOnDisk(&ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
// Make the bitcode file readable and directly executable in LLEE as well
|
|
if (sys::Path(BitcodeOutputFilename).makeExecutableOnDisk(&ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
|
|
if (sys::Path(BitcodeOutputFilename).makeReadableOnDisk(&ErrMsg))
|
|
PrintAndExit(ErrMsg);
|
|
}
|
|
} catch (const std::string& msg) {
|
|
PrintAndExit(msg,2);
|
|
} catch (...) {
|
|
PrintAndExit("Unexpected unknown exception occurred.", 2);
|
|
}
|
|
|
|
// Graceful exit
|
|
return 0;
|
|
}
|