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
diff --git a/lib/Bitcode/Writer/BitWriter.cpp b/lib/Bitcode/Writer/BitWriter.cpp
new file mode 100644
index 0000000..7b90586
--- /dev/null
+++ b/lib/Bitcode/Writer/BitWriter.cpp
@@ -0,0 +1,51 @@
+//===-- 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