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https://github.com/c64scene-ar/llvm-6502.git
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ced3d172f8
Since JIT->MCJIT migration, most of the ExecutionEngine interface became deprecated and/or broken. This especially affected the OCaml bindings, as runFunction is no longer available, and unlike in C, it is not possible to coerce a pointer to a function and call it in OCaml. In practice, LLVM 3.5 shipped completely unusable Llvm_executionengine. The GenericValue interface and runFunction were essentially a poor man's FFI. As such, this interface was removed and instead a dependency on ctypes >=0.3 added, which handled platform-specific aspects of accessing data and calling functions. The new interface does not expose JIT (which is a shim around MCJIT), as well as the interpreter (which can't handle a lot of valid IR). Llvm_executionengine.add_global_mapping is currently unusable due to PR20656. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220957 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
2.9 KiB
OCaml
104 lines
2.9 KiB
OCaml
(* RUN: cp %s %T/executionengine.ml
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* RUN: %ocamlcomp -g -warn-error A -package llvm.executionengine -linkpkg %T/executionengine.ml -o %t
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* RUN: %t
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* REQUIRES: native, object-emission
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* XFAIL: vg_leak
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*)
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open Llvm
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open Llvm_executionengine
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open Llvm_target
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(* Note that this takes a moment to link, so it's best to keep the number of
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individual tests low. *)
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let context = global_context ()
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let i8_type = Llvm.i8_type context
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let i32_type = Llvm.i32_type context
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let i64_type = Llvm.i64_type context
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let double_type = Llvm.double_type context
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let () =
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assert (Llvm_executionengine.initialize ())
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let bomb msg =
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prerr_endline msg;
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exit 2
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let define_getglobal m pg =
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let fn = define_function "getglobal" (function_type i32_type [||]) m in
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let b = builder_at_end (global_context ()) (entry_block fn) in
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let g = build_call pg [||] "" b in
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ignore (build_ret g b);
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fn
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let define_plus m =
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let fn = define_function "plus" (function_type i32_type [| i32_type;
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i32_type |]) m in
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let b = builder_at_end (global_context ()) (entry_block fn) in
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let add = build_add (param fn 0) (param fn 1) "sum" b in
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ignore (build_ret add b);
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fn
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let test_executionengine () =
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let open Ctypes in
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(* create *)
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let m = create_module (global_context ()) "test_module" in
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let ee = create m in
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(* add plus *)
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let plus = define_plus m in
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(* add module *)
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let m2 = create_module (global_context ()) "test_module2" in
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add_module m2 ee;
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(* add global mapping *)
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(* BROKEN: see PR20656 *)
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(* let g = declare_function "g" (function_type i32_type [||]) m2 in
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let cg = coerce (Foreign.funptr (void @-> returning int32_t)) (ptr void)
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(fun () -> 42l) in
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add_global_mapping g cg ee;
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(* check g *)
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let cg' = get_pointer_to_global g (ptr void) ee in
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if 0 <> ptr_compare cg cg' then bomb "int pointers to g differ";
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(* add getglobal *)
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let getglobal = define_getglobal m2 g in*)
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(* run_static_ctors *)
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run_static_ctors ee;
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(* call plus *)
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let cplusty = Foreign.funptr (int32_t @-> int32_t @-> returning int32_t) in
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let cplus = get_pointer_to_global plus cplusty ee in
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if 4l <> cplus 2l 2l then bomb "plus didn't work";
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(* call getglobal *)
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(* let cgetglobalty = Foreign.funptr (void @-> returning int32_t) in
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let cgetglobal = get_pointer_to_global getglobal cgetglobalty ee in
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if 42l <> cgetglobal () then bomb "getglobal didn't work"; *)
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(* remove_module *)
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remove_module m2 ee;
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dispose_module m2;
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(* run_static_dtors *)
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run_static_dtors ee;
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(* Show that the data layout binding links and runs.*)
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let dl = data_layout ee in
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(* Demonstrate that a garbage pointer wasn't returned. *)
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let ty = DataLayout.intptr_type context dl in
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if ty != i32_type && ty != i64_type then bomb "target_data did not work";
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(* dispose *)
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dispose ee
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let () =
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test_executionengine ();
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Gc.compact ()
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