llvm/test/Bindings/OCaml/executionengine.ml

   1 (* RUN: rm -rf %t && mkdir -p %t && cp %s %t/executionengine.ml
   2  * RUN: %ocamlc -g -w +A -thread -package ctypes.foreign,llvm.executionengine -linkpkg %t/executionengine.ml -o %t/executable
   3  * RUN: %t/executable
   4  * RUN: %ocamlopt -g -w +A -thread -package ctypes.foreign,llvm.executionengine -linkpkg %t/executionengine.ml -o %t/executable
   5  * RUN: %t/executable
   6  * REQUIRES: native
   7  * XFAIL: vg_leak
   8  *)
   9
  10 open Llvm
  11 open Llvm_executionengine
  12 open Llvm_target
  13
  14 (* Note that this takes a moment to link, so it's best to keep the number of
  15    individual tests low. *)
  16
  17 let context = global_context ()
  18 let i8_type = Llvm.i8_type context
  19 let i32_type = Llvm.i32_type context
  20 let i64_type = Llvm.i64_type context
  21 let double_type = Llvm.double_type context
  22
  23 let () =
  24   assert (Llvm_executionengine.initialize ())
  25
  26 let bomb msg =
  27   prerr_endline msg;
  28   exit 2
  29
  30 let define_getglobal m pg =
  31   let fty = function_type i32_type [||] in
  32   let fn = define_function "getglobal" fty m in
  33   let b = builder_at_end (global_context ()) (entry_block fn) in
  34   let g = build_call fty pg [||] "" b in
  35   ignore (build_ret g b);
  36   fn
  37
  38 let define_plus m =
  39   let fn = define_function "plus" (function_type i32_type [| i32_type;
  40                                                              i32_type |]) m in
  41   let b = builder_at_end (global_context ()) (entry_block fn) in
  42   let add = build_add (param fn 0) (param fn 1) "sum" b in
  43   ignore (build_ret add b);
  44   fn
  45
  46 let test_executionengine () =
  47   let open Ctypes in
  48
  49   (* create *)
  50   let m = create_module (global_context ()) "test_module" in
  51   let ee = create m in
  52
  53   (* add plus *)
  54   ignore (define_plus m);
  55
  56   (* declare global variable *)
  57   ignore (define_global "globvar" (const_int i32_type 23) m);
  58
  59   (* add module *)
  60   let m2 = create_module (global_context ()) "test_module2" in
  61   add_module m2 ee;
  62
  63   (* add global mapping *)
  64   (* BROKEN: see PR20656 *)
  65   (* let g = declare_function "g" (function_type i32_type [||]) m2 in
  66   let cg = coerce (Foreign.funptr (void @-> returning int32_t)) (ptr void)
  67                                   (fun () -> 42l) in
  68   add_global_mapping g cg ee;
  69
  70   (* check g *)
  71   let cg' = get_pointer_to_global g (ptr void) ee in
  72   if 0 <> ptr_compare cg cg' then bomb "int pointers to g differ";
  73
  74   (* add getglobal *)
  75   let getglobal = define_getglobal m2 g in*)
  76
  77   (* run_static_ctors *)
  78   run_static_ctors ee;
  79
  80   (* get a handle on globvar *)
  81   let varh    = get_global_value_address "globvar" int32_t ee in
  82   if 23l <> varh then bomb "get_global_value_address didn't work";
  83
  84   (* call plus *)
  85   let cplusty = Foreign.funptr (int32_t @-> int32_t @-> returning int32_t) in
  86   let cplus   = get_function_address "plus" cplusty ee in
  87   if 4l <> cplus 2l 2l then bomb "plus didn't work";
  88
  89   (* call getglobal *)
  90   (* let cgetglobalty = Foreign.funptr (void @-> returning int32_t) in
  91   let cgetglobal   = get_pointer_to_global getglobal cgetglobalty ee in
  92   if 42l <> cgetglobal () then bomb "getglobal didn't work"; *)
  93
  94   (* remove_module *)
  95   remove_module m2 ee;
  96   dispose_module m2;
  97
  98   (* run_static_dtors *)
  99   run_static_dtors ee;
 100
 101   (* Show that the data layout binding links and runs.*)
 102   let dl = data_layout ee in
 103
 104   (* Demonstrate that a garbage pointer wasn't returned. *)
 105   let ty = DataLayout.intptr_type context dl in
 106   if ty != i32_type && ty != i64_type then bomb "target_data did not work";
 107
 108   (* dispose *)
 109   dispose ee
 110
 111 let () =
 112   test_executionengine ();
 113   Gc.compact ()