1 /*===-- bitwriter_ocaml.c - LLVM Ocaml Glue ---------------------*- C++ -*-===*\
3 |* The LLVM Compiler Infrastructure *|
5 |* This file is distributed under the University of Illinois Open Source *|
6 |* License. See LICENSE.TXT for details. *|
8 |*===----------------------------------------------------------------------===*|
10 |* This file glues LLVM's ocaml interface to its C interface. These functions *|
11 |* are by and large transparent wrappers to the corresponding C functions. *|
13 \*===----------------------------------------------------------------------===*/
15 #include "llvm-c/BitReader.h"
16 #include "caml/alloc.h"
17 #include "caml/fail.h"
18 #include "caml/memory.h"
21 /* Can't use the recommended caml_named_value mechanism for backwards
22 compatibility reasons. This is largely equivalent. */
23 static value llvm_bitreader_error_exn;
25 CAMLprim value llvm_register_bitreader_exns(value Error) {
26 llvm_bitreader_error_exn = Field(Error, 0);
27 register_global_root(&llvm_bitreader_error_exn);
31 static void llvm_raise(value Prototype, char *Message) {
32 CAMLparam1(Prototype);
33 CAMLlocal1(CamlMessage);
35 CamlMessage = copy_string(Message);
36 LLVMDisposeMessage(Message);
38 raise_with_arg(Prototype, CamlMessage);
39 abort(); /* NOTREACHED */
41 CAMLnoreturn; /* Silences warnings, but is missing in some versions. */
46 /*===-- Modules -----------------------------------------------------------===*/
48 /* Llvm.llmemorybuffer -> Llvm.module */
49 CAMLprim value llvm_get_module_provider(LLVMMemoryBufferRef MemBuf) {
51 CAMLlocal2(Variant, MessageVal);
54 LLVMModuleProviderRef MP;
55 if (LLVMGetBitcodeModuleProvider(MemBuf, &MP, &Message))
56 llvm_raise(llvm_bitreader_error_exn, Message);
58 CAMLreturn((value) MemBuf);
61 /* Llvm.llmemorybuffer -> Llvm.llmodule */
62 CAMLprim value llvm_parse_bitcode(LLVMMemoryBufferRef MemBuf) {
64 CAMLlocal2(Variant, MessageVal);
68 if (LLVMParseBitcode(MemBuf, &M, &Message))
69 llvm_raise(llvm_bitreader_error_exn, Message);
71 CAMLreturn((value) M);