llvm/bindings/ocaml/bitreader/bitreader_ocaml.c

   1 /*===-- bitwriter_ocaml.c - LLVM OCaml Glue ---------------------*- C++ -*-===*\
   2 |*                                                                            *|
   3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
   4 |* Exceptions.                                                                *|
   5 |* See https://llvm.org/LICENSE.txt for license information.                  *|
   6 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
   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 "caml/alloc.h"
  16 #include "caml/callback.h"
  17 #include "caml/fail.h"
  18 #include "caml/memory.h"
  19 #include "llvm_ocaml.h"
  20 #include "llvm-c/BitReader.h"
  21 #include "llvm-c/Core.h"
  22
  23 void llvm_raise(value Prototype, char *Message);
  24
  25 /* Llvm.llcontext -> Llvm.llmemorybuffer -> Llvm.llmodule */
  26 value llvm_get_module(value C, value MemBuf) {
  27   LLVMModuleRef M;
  28
  29   if (LLVMGetBitcodeModuleInContext2(Context_val(C), MemoryBuffer_val(MemBuf),
  30                                      &M))
  31     llvm_raise(*caml_named_value("Llvm_bitreader.Error"),
  32                LLVMCreateMessage(""));
  33
  34   return to_val(M);
  35 }
  36
  37 /* Llvm.llcontext -> Llvm.llmemorybuffer -> Llvm.llmodule */
  38 value llvm_parse_bitcode(value C, value MemBuf) {
  39   LLVMModuleRef M;
  40
  41   if (LLVMParseBitcodeInContext2(Context_val(C), MemoryBuffer_val(MemBuf), &M))
  42     llvm_raise(*caml_named_value("Llvm_bitreader.Error"),
  43                LLVMCreateMessage(""));
  44
  45   return to_val(M);
  46 }