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      1 (*===-- llvm_executionengine.ml - LLVM Ocaml Interface ----------*- 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 
     11 exception Error of string
     12 
     13 external register_exns: exn -> unit
     14   = "llvm_register_ee_exns"
     15 
     16 
     17 module GenericValue = struct
     18   type t
     19   
     20   external of_float: Llvm.lltype -> float -> t
     21     = "llvm_genericvalue_of_float"
     22   external of_pointer: 'a -> t
     23     = "llvm_genericvalue_of_pointer"
     24   external of_int32: Llvm.lltype -> int32 -> t
     25     = "llvm_genericvalue_of_int32"
     26   external of_int: Llvm.lltype -> int -> t
     27     = "llvm_genericvalue_of_int"
     28   external of_nativeint: Llvm.lltype -> nativeint -> t
     29     = "llvm_genericvalue_of_nativeint"
     30   external of_int64: Llvm.lltype -> int64 -> t
     31     = "llvm_genericvalue_of_int64"
     32   
     33   external as_float: Llvm.lltype -> t -> float
     34     = "llvm_genericvalue_as_float"
     35   external as_pointer: t -> 'a
     36     = "llvm_genericvalue_as_pointer"
     37   external as_int32: t -> int32
     38     = "llvm_genericvalue_as_int32"
     39   external as_int: t -> int
     40     = "llvm_genericvalue_as_int"
     41   external as_nativeint: t -> nativeint
     42     = "llvm_genericvalue_as_nativeint"
     43   external as_int64: t -> int64
     44     = "llvm_genericvalue_as_int64"
     45 end
     46 
     47 
     48 module ExecutionEngine = struct
     49   type t
     50   
     51   (* FIXME: Ocaml is not running this setup code unless we use 'val' in the
     52             interface, which causes the emission of a stub for each function;
     53             using 'external' in the module allows direct calls into 
     54             ocaml_executionengine.c. This is hardly fatal, but it is unnecessary
     55             overhead on top of the two stubs that are already invoked for each 
     56             call into LLVM. *)
     57   let _ = register_exns (Error "")
     58   
     59   external create: Llvm.llmodule -> t
     60     = "llvm_ee_create"
     61   external create_interpreter: Llvm.llmodule -> t
     62     = "llvm_ee_create_interpreter"
     63   external create_jit: Llvm.llmodule -> int -> t
     64     = "llvm_ee_create_jit"
     65   external dispose: t -> unit
     66     = "llvm_ee_dispose"
     67   external add_module: Llvm.llmodule -> t -> unit
     68     = "llvm_ee_add_module"
     69   external remove_module: Llvm.llmodule -> t -> Llvm.llmodule
     70     = "llvm_ee_remove_module"
     71   external find_function: string -> t -> Llvm.llvalue option
     72     = "llvm_ee_find_function"
     73   external run_function: Llvm.llvalue -> GenericValue.t array -> t ->
     74                          GenericValue.t
     75     = "llvm_ee_run_function"
     76   external run_static_ctors: t -> unit
     77     = "llvm_ee_run_static_ctors"
     78   external run_static_dtors: t -> unit
     79     = "llvm_ee_run_static_dtors"
     80   external run_function_as_main: Llvm.llvalue -> string array ->
     81                                  (string * string) array -> t -> int
     82     = "llvm_ee_run_function_as_main"
     83   external free_machine_code: Llvm.llvalue -> t -> unit
     84     = "llvm_ee_free_machine_code"
     85 
     86   external target_data: t -> Llvm_target.DataLayout.t
     87     = "LLVMGetExecutionEngineTargetData"
     88   
     89   (* The following are not bound. Patches are welcome.
     90   
     91   get_target_data: t -> lltargetdata
     92   add_global_mapping: llvalue -> llgenericvalue -> t -> unit
     93   clear_all_global_mappings: t -> unit
     94   update_global_mapping: llvalue -> llgenericvalue -> t -> unit
     95   get_pointer_to_global_if_available: llvalue -> t -> llgenericvalue
     96   get_pointer_to_global: llvalue -> t -> llgenericvalue
     97   get_pointer_to_function: llvalue -> t -> llgenericvalue
     98   get_pointer_to_function_or_stub: llvalue -> t -> llgenericvalue
     99   get_global_value_at_address: llgenericvalue -> t -> llvalue option
    100   store_value_to_memory: llgenericvalue -> llgenericvalue -> lltype -> unit
    101   initialize_memory: llvalue -> llgenericvalue -> t -> unit
    102   recompile_and_relink_function: llvalue -> t -> llgenericvalue
    103   get_or_emit_global_variable: llvalue -> t -> llgenericvalue
    104   disable_lazy_compilation: t -> unit
    105   lazy_compilation_enabled: t -> bool
    106   install_lazy_function_creator: (string -> llgenericvalue) -> t -> unit
    107   
    108    *)
    109 end
    110 
    111 external initialize_native_target : unit -> bool
    112                                   = "llvm_initialize_native_target"
    113