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/*===-- bitwriter_ocaml.c - LLVM Ocaml Glue ---------------------*- C++ -*-===*\
|* *|
|* The LLVM Compiler Infrastructure *|
|* *|
|* This file is distributed under the University of Illinois Open Source *|
|* License. See LICENSE.TXT for details. *|
|* *|
|*===----------------------------------------------------------------------===*|
|* *|
|* This file glues LLVM's ocaml interface to its C interface. These functions *|
|* are by and large transparent wrappers to the corresponding C functions. *|
|* *|
\*===----------------------------------------------------------------------===*/
#include "llvm-c/BitReader.h"
#include "caml/alloc.h"
#include "caml/fail.h"
#include "caml/memory.h"
/* Can't use the recommended caml_named_value mechanism for backwards
compatibility reasons. This is largely equivalent. */
static value llvm_bitreader_error_exn;
CAMLprim value llvm_register_bitreader_exns(value Error) {
llvm_bitreader_error_exn = Field(Error, 0);
register_global_root(&llvm_bitreader_error_exn);
return Val_unit;
}
static void llvm_raise(value Prototype, char *Message) {
CAMLparam1(Prototype);
CAMLlocal1(CamlMessage);
CamlMessage = copy_string(Message);
LLVMDisposeMessage(Message);
raise_with_arg(Prototype, CamlMessage);
abort(); /* NOTREACHED */
#ifdef CAMLnoreturn
CAMLnoreturn; /* Silences warnings, but is missing in some versions. */
#endif
}
/*===-- Modules -----------------------------------------------------------===*/
/* Llvm.llmemorybuffer -> Llvm.module */
CAMLprim value llvm_get_module_provider(LLVMMemoryBufferRef MemBuf) {
CAMLparam0();
CAMLlocal2(Variant, MessageVal);
char *Message;
LLVMModuleProviderRef MP;
if (LLVMGetBitcodeModuleProvider(MemBuf, &MP, &Message))
llvm_raise(llvm_bitreader_error_exn, Message);
CAMLreturn((value) MemBuf);
}
/* Llvm.llmemorybuffer -> Llvm.llmodule */
CAMLprim value llvm_parse_bitcode(LLVMMemoryBufferRef MemBuf) {
CAMLparam0();
CAMLlocal2(Variant, MessageVal);
LLVMModuleRef M;
char *Message;
if (LLVMParseBitcode(MemBuf, &M, &Message))
llvm_raise(llvm_bitreader_error_exn, Message);
CAMLreturn((value) M);
}
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