test/Bindings/Ocaml/executionengine.ml

   1 (* RUN: %ocamlopt -warn-error A llvm.cmxa llvm_target.cmxa llvm_executionengine.cmxa %s -o %t
   2  * RUN: ./%t %t.bc
   3  *)
   4
   5 open Llvm
   6 open Llvm_executionengine
   7 open Llvm_target
   8
   9 (* Note that this takes a moment to link, so it's best to keep the number of
  10    individual tests low. *)
  11
  12 let context = global_context ()
  13 let i8_type = Llvm.i8_type context
  14 let i32_type = Llvm.i32_type context
  15 let i64_type = Llvm.i64_type context
  16 let double_type = Llvm.double_type context
  17
  18 let bomb msg =
  19   prerr_endline msg;
  20   exit 2
  21
  22 let define_main_fn m retval =
  23   let fn =
  24     let str_arr_type = pointer_type (pointer_type i8_type) in
  25     define_function "main" (function_type i32_type [| i32_type;
  26                                                       str_arr_type;
  27                                                       str_arr_type |]) m in
  28   let b = builder_at_end (global_context ()) (entry_block fn) in
  29   ignore (build_ret (const_int i32_type retval) b);
  30   fn
  31
  32 let define_plus m =
  33   let fn = define_function "plus" (function_type i32_type [| i32_type;
  34                                                              i32_type |]) m in
  35   let b = builder_at_end (global_context ()) (entry_block fn) in
  36   let add = build_add (param fn 0) (param fn 1) "sum" b in
  37   ignore (build_ret add b)
  38
  39 let test_genericvalue () =
  40   let tu = (1, 2) in
  41   let ptrgv = GenericValue.of_pointer tu in
  42   assert (tu = GenericValue.as_pointer ptrgv);
  43
  44   let fpgv = GenericValue.of_float double_type 2. in
  45   assert (2. = GenericValue.as_float double_type fpgv);
  46
  47   let intgv = GenericValue.of_int i32_type 3 in
  48   assert (3  = GenericValue.as_int intgv);
  49
  50   let i32gv = GenericValue.of_int32 i32_type (Int32.of_int 4) in
  51   assert ((Int32.of_int 4) = GenericValue.as_int32 i32gv);
  52
  53   let nigv = GenericValue.of_nativeint i32_type (Nativeint.of_int 5) in
  54   assert ((Nativeint.of_int 5) = GenericValue.as_nativeint nigv);
  55
  56   let i64gv = GenericValue.of_int64 i64_type (Int64.of_int 6) in
  57   assert ((Int64.of_int 6) = GenericValue.as_int64 i64gv)
  58
  59 let test_executionengine () =
  60   (* create *)
  61   let m = create_module (global_context ()) "test_module" in
  62   let main = define_main_fn m 42 in
  63
  64   let m2 = create_module (global_context ()) "test_module2" in
  65   define_plus m2;
  66
  67   let ee = ExecutionEngine.create (ModuleProvider.create m) in
  68   let mp2 = ModuleProvider.create m2 in
  69   ExecutionEngine.add_module_provider mp2 ee;
  70
  71   (* run_static_ctors *)
  72   ExecutionEngine.run_static_ctors ee;
  73
  74   (* run_function_as_main *)
  75   let res = ExecutionEngine.run_function_as_main main [|"test"|] [||] ee in
  76   if 42 != res then bomb "main did not return 42";
  77
  78   (* free_machine_code *)
  79   ExecutionEngine.free_machine_code main ee;
  80
  81   (* find_function *)
  82   match ExecutionEngine.find_function "dne" ee with
  83   | Some _ -> raise (Failure "find_function 'dne' failed")
  84   | None ->
  85
  86   match ExecutionEngine.find_function "plus" ee with
  87   | None -> raise (Failure "find_function 'plus' failed")
  88   | Some plus ->
  89
  90   (* run_function *)
  91   let res = ExecutionEngine.run_function plus
  92                                          [| GenericValue.of_int i32_type 2;
  93                                             GenericValue.of_int i32_type 2 |]
  94                                          ee in
  95   if 4 != GenericValue.as_int res then bomb "plus did not work";
  96
  97   (* remove_module_provider *)
  98   Llvm.dispose_module (ExecutionEngine.remove_module_provider mp2 ee);
  99
 100   (* run_static_dtors *)
 101   ExecutionEngine.run_static_dtors ee;
 102
 103   (* Show that the target data binding links and runs.*)
 104   let td = ExecutionEngine.target_data ee in
 105
 106   (* Demonstrate that a garbage pointer wasn't returned. *)
 107   let ty = intptr_type td in
 108   if ty != i32_type && ty != i64_type then bomb "target_data did not work";
 109
 110   (* dispose *)
 111   ExecutionEngine.dispose ee
 112
 113 let _ =
 114   test_genericvalue ();
 115   test_executionengine ()