bindings/ocaml/executionengine/executionengine_ocaml.c

   1 /*===-- executionengine_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 |* Note that these functions intentionally take liberties with the CAMLparamX *|
  14 |* macros, since most of the parameters are not GC heap objects.              *|
  15 |*                                                                            *|
  16 \*===----------------------------------------------------------------------===*/
  17
  18 #include <string.h>
  19 #include <assert.h>
  20 #include "llvm-c/ExecutionEngine.h"
  21 #include "llvm-c/Target.h"
  22 #include "caml/alloc.h"
  23 #include "caml/custom.h"
  24 #include "caml/fail.h"
  25 #include "caml/memory.h"
  26 #include "caml/callback.h"
  27
  28 void llvm_raise(value Prototype, char *Message);
  29
  30 /* unit -> bool */
  31 CAMLprim value llvm_ee_initialize(value Unit) {
  32   LLVMLinkInMCJIT();
  33
  34   return Val_bool(!LLVMInitializeNativeTarget() &&
  35                   !LLVMInitializeNativeAsmParser() &&
  36                   !LLVMInitializeNativeAsmPrinter());
  37 }
  38
  39 /* llmodule -> llcompileroption -> ExecutionEngine.t */
  40 CAMLprim LLVMExecutionEngineRef llvm_ee_create(value OptRecordOpt, LLVMModuleRef M) {
  41   value OptRecord;
  42   LLVMExecutionEngineRef MCJIT;
  43   char *Error;
  44   struct LLVMMCJITCompilerOptions Options;
  45
  46   LLVMInitializeMCJITCompilerOptions(&Options, sizeof(Options));
  47   if (OptRecordOpt != Val_int(0)) {
  48     OptRecord = Field(OptRecordOpt, 0);
  49     Options.OptLevel = Int_val(Field(OptRecord, 0));
  50     Options.CodeModel = Int_val(Field(OptRecord, 1));
  51     Options.NoFramePointerElim = Int_val(Field(OptRecord, 2));
  52     Options.EnableFastISel = Int_val(Field(OptRecord, 3));
  53     Options.MCJMM = NULL;
  54   }
  55
  56   if (LLVMCreateMCJITCompilerForModule(&MCJIT, M, &Options,
  57                                       sizeof(Options), &Error))
  58     llvm_raise(*caml_named_value("Llvm_executionengine.Error"), Error);
  59   return MCJIT;
  60 }
  61
  62 /* ExecutionEngine.t -> unit */
  63 CAMLprim value llvm_ee_dispose(LLVMExecutionEngineRef EE) {
  64   LLVMDisposeExecutionEngine(EE);
  65   return Val_unit;
  66 }
  67
  68 /* llmodule -> ExecutionEngine.t -> unit */
  69 CAMLprim value llvm_ee_add_module(LLVMModuleRef M, LLVMExecutionEngineRef EE) {
  70   LLVMAddModule(EE, M);
  71   return Val_unit;
  72 }
  73
  74 /* llmodule -> ExecutionEngine.t -> llmodule */
  75 CAMLprim value llvm_ee_remove_module(LLVMModuleRef M, LLVMExecutionEngineRef EE) {
  76   LLVMModuleRef RemovedModule;
  77   char *Error;
  78   if (LLVMRemoveModule(EE, M, &RemovedModule, &Error))
  79     llvm_raise(*caml_named_value("Llvm_executionengine.Error"), Error);
  80   return Val_unit;
  81 }
  82
  83 /* ExecutionEngine.t -> unit */
  84 CAMLprim value llvm_ee_run_static_ctors(LLVMExecutionEngineRef EE) {
  85   LLVMRunStaticConstructors(EE);
  86   return Val_unit;
  87 }
  88
  89 /* ExecutionEngine.t -> unit */
  90 CAMLprim value llvm_ee_run_static_dtors(LLVMExecutionEngineRef EE) {
  91   LLVMRunStaticDestructors(EE);
  92   return Val_unit;
  93 }
  94
  95 extern value llvm_alloc_data_layout(LLVMTargetDataRef TargetData);
  96
  97 /* ExecutionEngine.t -> Llvm_target.DataLayout.t */
  98 CAMLprim value llvm_ee_get_data_layout(LLVMExecutionEngineRef EE) {
  99   value DataLayout;
 100   LLVMTargetDataRef OrigDataLayout;
 101   char* TargetDataCStr;
 102
 103   OrigDataLayout = LLVMGetExecutionEngineTargetData(EE);
 104   TargetDataCStr = LLVMCopyStringRepOfTargetData(OrigDataLayout);
 105   DataLayout = llvm_alloc_data_layout(LLVMCreateTargetData(TargetDataCStr));
 106   LLVMDisposeMessage(TargetDataCStr);
 107
 108   return DataLayout;
 109 }
 110
 111 /* Llvm.llvalue -> int64 -> llexecutionengine -> unit */
 112 CAMLprim value llvm_ee_add_global_mapping(LLVMValueRef Global, value Ptr,
 113                                           LLVMExecutionEngineRef EE) {
 114   LLVMAddGlobalMapping(EE, Global, (void*) (Int64_val(Ptr)));
 115   return Val_unit;
 116 }
 117
 118 CAMLprim value llvm_ee_get_global_value_address(value Name,
 119                                                 LLVMExecutionEngineRef EE) {
 120   return caml_copy_int64((int64_t) LLVMGetGlobalValueAddress(EE, String_val(Name)));
 121 }
 122
 123 CAMLprim value llvm_ee_get_function_address(value Name,
 124                                             LLVMExecutionEngineRef EE) {
 125   return caml_copy_int64((int64_t) LLVMGetFunctionAddress(EE, String_val(Name)));
 126 }