bindings/ocaml/irreader/irreader_ocaml.c

   1 /*===-- irreader_ocaml.c - LLVM OCaml Glue ----------------------*- C++ -*-===*\
   2 |*                                                                            *|
   3 |*                     The LLVM Compiler Infrastructure                       *|
   4 |*                                                                            *|
   5 |* This file is distributed under the University of Illinois Open Source      *|
   6 |* License. See LICENSE.TXT for details.                                      *|
   7 |*                                                                            *|
   8 |*===----------------------------------------------------------------------===*|
   9 |*                                                                            *|
  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.    *|
  12 |*                                                                            *|
  13 \*===----------------------------------------------------------------------===*/
  14
  15 #include "llvm-c/IRReader.h"
  16 #include "caml/alloc.h"
  17 #include "caml/fail.h"
  18 #include "caml/memory.h"
  19 #include "caml/callback.h"
  20
  21 static void llvm_raise(value Prototype, char *Message) {
  22   CAMLparam1(Prototype);
  23   CAMLlocal1(CamlMessage);
  24
  25   CamlMessage = copy_string(Message);
  26   LLVMDisposeMessage(Message);
  27
  28   raise_with_arg(Prototype, CamlMessage);
  29   CAMLnoreturn;
  30 }
  31
  32 /*===-- IRReader ----------------------------------------------------------===*/
  33
  34 /* Llvm.llcontext -> Llvm.llmemorybuffer -> Llvm.llmodule */
  35 CAMLprim value llvm_parse_ir(LLVMContextRef C,
  36                              LLVMMemoryBufferRef MemBuf) {
  37   CAMLparam0();
  38   CAMLlocal2(Variant, MessageVal);
  39   LLVMModuleRef M;
  40   char *Message;
  41
  42   if (LLVMParseIRInContext(C, MemBuf, &M, &Message))
  43     llvm_raise(*caml_named_value("Llvm_irreader.Error"), Message);
  44
  45   CAMLreturn((value) M);
  46 }