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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | (*===-- llvm_executionengine.mli - LLVM OCaml Interface ---------*- C++ -*-===*
*
* The LLVM Compiler Infrastructure
*
* This file is distributed under the University of Illinois Open Source
* License. See LICENSE.TXT for details.
*
*===----------------------------------------------------------------------===*)
(** JIT Interpreter.
This interface provides an OCaml API for LLVM execution engine (JIT/
interpreter), the classes in the ExecutionEngine library. *)
exception Error of string
module GenericValue: sig
(** [GenericValue.t] is a boxed union type used to portably pass arguments to
and receive values from the execution engine. It supports only a limited
selection of types; for more complex argument types, it is necessary to
generate a stub function by hand or to pass parameters by reference.
See the struct [llvm::GenericValue]. *)
type t
(** [of_float fpty n] boxes the float [n] in a float-valued generic value
according to the floating point type [fpty]. See the fields
[llvm::GenericValue::DoubleVal] and [llvm::GenericValue::FloatVal]. *)
val of_float : Llvm.lltype -> float -> t
(** [of_pointer v] boxes the pointer value [v] in a generic value. See the
field [llvm::GenericValue::PointerVal]. *)
val of_pointer : 'a -> t
(** [of_int32 n w] boxes the int32 [i] in a generic value with the bitwidth
[w]. See the field [llvm::GenericValue::IntVal]. *)
val of_int32 : Llvm.lltype -> int32 -> t
(** [of_int n w] boxes the int [i] in a generic value with the bitwidth
[w]. See the field [llvm::GenericValue::IntVal]. *)
val of_int : Llvm.lltype -> int -> t
(** [of_natint n w] boxes the native int [i] in a generic value with the
bitwidth [w]. See the field [llvm::GenericValue::IntVal]. *)
val of_nativeint : Llvm.lltype -> nativeint -> t
(** [of_int64 n w] boxes the int64 [i] in a generic value with the bitwidth
[w]. See the field [llvm::GenericValue::IntVal]. *)
val of_int64 : Llvm.lltype -> int64 -> t
(** [as_float fpty gv] unboxes the floating point-valued generic value [gv] of
floating point type [fpty]. See the fields [llvm::GenericValue::DoubleVal]
and [llvm::GenericValue::FloatVal]. *)
val as_float : Llvm.lltype -> t -> float
(** [as_pointer gv] unboxes the pointer-valued generic value [gv]. See the
field [llvm::GenericValue::PointerVal]. *)
val as_pointer : t -> 'a
(** [as_int32 gv] unboxes the integer-valued generic value [gv] as an [int32].
Is invalid if [gv] has a bitwidth greater than 32 bits. See the field
[llvm::GenericValue::IntVal]. *)
val as_int32 : t -> int32
(** [as_int gv] unboxes the integer-valued generic value [gv] as an [int].
Is invalid if [gv] has a bitwidth greater than the host bit width (but the
most significant bit may be lost). See the field
[llvm::GenericValue::IntVal]. *)
val as_int : t -> int
(** [as_natint gv] unboxes the integer-valued generic value [gv] as a
[nativeint]. Is invalid if [gv] has a bitwidth greater than
[nativeint]. See the field [llvm::GenericValue::IntVal]. *)
val as_nativeint : t -> nativeint
(** [as_int64 gv] returns the integer-valued generic value [gv] as an [int64].
Is invalid if [gv] has a bitwidth greater than [int64]. See the field
[llvm::GenericValue::IntVal]. *)
val as_int64 : t -> int64
end
module ExecutionEngine: sig
(** An execution engine is either a JIT compiler or an interpreter, capable of
directly loading an LLVM module and executing its functions without first
invoking a static compiler and generating a native executable. *)
type t
(** [create m] creates a new execution engine, taking ownership of the
module [m] if successful. Creates a JIT if possible, else falls back to an
interpreter. Raises [Error msg] if an error occurrs. The execution engine
is not garbage collected and must be destroyed with [dispose ee].
See the function [llvm::EngineBuilder::create]. *)
val create : Llvm.llmodule -> t
(** [create_interpreter m] creates a new interpreter, taking ownership of the
module [m] if successful. Raises [Error msg] if an error occurrs. The
execution engine is not garbage collected and must be destroyed with
[dispose ee].
See the function [llvm::EngineBuilder::create]. *)
val create_interpreter : Llvm.llmodule -> t
(** [create_jit m optlevel] creates a new JIT (just-in-time compiler), taking
ownership of the module [m] if successful with the desired optimization
level [optlevel]. Raises [Error msg] if an error occurrs. The execution
engine is not garbage collected and must be destroyed with [dispose ee].
See the function [llvm::EngineBuilder::create]. *)
val create_jit : Llvm.llmodule -> int -> t
(** [dispose ee] releases the memory used by the execution engine and must be
invoked to avoid memory leaks. *)
val dispose : t -> unit
(** [add_module m ee] adds the module [m] to the execution engine [ee]. *)
val add_module : Llvm.llmodule -> t -> unit
(** [remove_module m ee] removes the module [m] from the execution engine
[ee], disposing of [m] and the module referenced by [mp]. Raises
[Error msg] if an error occurs. *)
val remove_module : Llvm.llmodule -> t -> Llvm.llmodule
(** [find_function n ee] finds the function named [n] defined in any of the
modules owned by the execution engine [ee]. Returns [None] if the function
is not found and [Some f] otherwise. *)
val find_function : string -> t -> Llvm.llvalue option
(** [run_function f args ee] synchronously executes the function [f] with the
arguments [args], which must be compatible with the parameter types. *)
val run_function : Llvm.llvalue -> GenericValue.t array -> t ->
GenericValue.t
(** [run_static_ctors ee] executes the static constructors of each module in
the execution engine [ee]. *)
val run_static_ctors : t -> unit
(** [run_static_dtors ee] executes the static destructors of each module in
the execution engine [ee]. *)
val run_static_dtors : t -> unit
(** [run_function_as_main f args env ee] executes the function [f] as a main
function, passing it [argv] and [argc] according to the string array
[args], and [envp] as specified by the array [env]. Returns the integer
return value of the function. *)
val run_function_as_main : Llvm.llvalue -> string array ->
(string * string) array -> t -> int
(** [free_machine_code f ee] releases the memory in the execution engine [ee]
used to store the machine code for the function [f]. *)
val free_machine_code : Llvm.llvalue -> t -> unit
(** [data_layout ee] is the data layout of the execution engine [ee]. *)
val data_layout : t -> Llvm_target.DataLayout.t
end
val initialize_native_target : unit -> bool
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