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 */
llvm_ee_initialize(value Unit)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 */
llvm_ee_create(value OptRecordOpt,LLVMModuleRef M)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 */
llvm_ee_dispose(LLVMExecutionEngineRef EE)63 CAMLprim value llvm_ee_dispose(LLVMExecutionEngineRef EE) {
64 LLVMDisposeExecutionEngine(EE);
65 return Val_unit;
66 }
67
68 /* llmodule -> ExecutionEngine.t -> unit */
llvm_ee_add_module(LLVMModuleRef M,LLVMExecutionEngineRef EE)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 */
llvm_ee_remove_module(LLVMModuleRef M,LLVMExecutionEngineRef EE)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 */
llvm_ee_run_static_ctors(LLVMExecutionEngineRef EE)84 CAMLprim value llvm_ee_run_static_ctors(LLVMExecutionEngineRef EE) {
85 LLVMRunStaticConstructors(EE);
86 return Val_unit;
87 }
88
89 /* ExecutionEngine.t -> unit */
llvm_ee_run_static_dtors(LLVMExecutionEngineRef EE)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 */
llvm_ee_get_data_layout(LLVMExecutionEngineRef EE)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 */
llvm_ee_add_global_mapping(LLVMValueRef Global,value Ptr,LLVMExecutionEngineRef EE)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
llvm_ee_get_global_value_address(value Name,LLVMExecutionEngineRef EE)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
llvm_ee_get_function_address(value Name,LLVMExecutionEngineRef EE)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 }
127