llvm-6502/lib/Bitcode/Writer/BitWriter.cpp
Gordon Henriksen 8b94a14a78 C bindings for libLLVMCore.a and libLLVMBitWriter.a.
- The naming prefix is LLVM.
- All types are represented using opaque references.
- Functions are not named LLVM{Type}{Method}; the names became
  unreadable goop. Instead, they are named LLVM{ImperativeSentence}.
- Where an attribute only appears once in the class hierarchy (e.g.,
  linkage only applies to values; parameter types only apply to
  function types), the class is omitted from identifiers for
  brevity. Tastes like methods.
- Strings are C strings or string/length tuples on a case-by-case
  basis.
- APIs which give the caller ownership of an object are not mapped
  (removeFromParent, certain constructor overloads). This keeps
  keep memory management as simple as possible.

For each library with bindings:

  llvm-c/<LIB>.h       - Declares the bindings.
  lib/<LIB>/<LIB>.cpp  - Implements the bindings.

So just link with the library of your choice and use the C header
instead of the C++ one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42077 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-18 03:18:57 +00:00

52 lines
1.3 KiB
C++

//===-- BitWriter.cpp -----------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm-c/BitWriter.h"
#include "llvm/CHelpers.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include <fstream>
using namespace llvm;
/*===-- Operations on modules ---------------------------------------------===*/
int LLVMWriteBitcodeToFile(LLVMModuleRef M, const char *Path) {
std::ofstream OS(Path);
if (!OS.fail())
WriteBitcodeToFile(unwrap(M), OS);
if (OS.fail())
return -1;
return 0;
}
#ifdef __GNUC__
#include <ext/stdio_filebuf.h>
// FIXME: Control this with configure? Provide some portable abstraction in
// libSystem? As is, the user will just get a linker error if they use this on
// non-GCC. Some C++ stdlibs even have ofstream::ofstream(int fd).
int LLVMWriteBitcodeToFileHandle(LLVMModuleRef M, int FileHandle) {
__gnu_cxx::stdio_filebuf<char> Buffer(FileHandle, std::ios_base::out);
std::ostream OS(&Buffer);
if (!OS.fail())
WriteBitcodeToFile(unwrap(M), OS);
if (OS.fail())
return -1;
return 0;
}
#endif