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val () = print "libm5 starting up\n"
val () = OS.Process.atExit
(fn () => (_import "m4_close" public : unit -> unit; ()
; print "libm5 exits\n"))
(* Prepare libm4 *)
val () = _import "m4_open" external : int * string vector -> unit;
(1, Vector.fromList ["libm4"])
type p = MLton.Pointer.t
type 'a s = (unit -> 'a) * ('a -> unit)
val (_, setSI) = _symbol "libm5smlSymPrivate" alloc private : p s;
val (_, setSB) = _symbol "libm5smlSymPublic" alloc public : p s;
val (_, setCI) = _symbol "libm5cSymPrivate" private : p s;
val (_, setCB) = _symbol "libm5cSymPublic" public : p s;
type i = (unit -> p)
type e = i -> unit
val () = _export "libm5smlFnPrivate" private : e;
(fn () => _address "libm5smlSymPrivate" private : p;)
val () = _export "libm5smlFnPublic" public : e;
(fn () => _address "libm5smlSymPublic" public : p;)
val getCI = _import "libm5cFnPrivate" private : i;
val getCB = _import "libm5cFnPublic" public : i;
(* Store our idea of what the function pointers are in symbols *)
val () = setSI (_address "libm5smlFnPrivate" private : p;)
val () = setSB (_address "libm5smlFnPublic" public : p;)
val () = setCI (_address "libm5cFnPrivate" private : p;)
val () = setCB (_address "libm5cFnPublic" public : p;)
(* Have C confirm that it sees the same function pointers we do.
* C will check the values of the variables against it's own pointers.
* C also checks SML functions return his idea of pointers to our exports.
*)
val () = _import "libm5confirmC" private : unit -> unit; ()
(* Confirm that C functions return pointers to address as we expect. *)
fun check (s, b) = if b then () else print (s ^ " pointers don't match!\n")
val () = check ("libm5cFnPrivate", getCI () = _address "libm5cSymPrivate" private : p;)
val () = check ("libm5cFnPublic", getCB () = _address "libm5cSymPublic" public : p;)
(* Test symbols in libm3 *)
val (SB, _) = _symbol "libm3smlSymPublic" external : p s;
val (CB, _) = _symbol "libm3cSymPublic" external : p s;
val getSB = _import "libm3smlFnPublic" external : i;
val getCB = _import "libm3cFnPublic" external : i;
(* Check function pointers *)
val () = check ("libm3smlFnPublic", SB () = _address "libm3smlFnPublic" external : p;)
val () = check ("libm3cFnPublic", CB () = _address "libm3cFnPublic" external : p;)
(* Check symbol pointers *)
val () = check ("libm3smlSymPublic", getSB () = _address "libm3smlSymPublic" external : p;)
val () = check ("libm3cSymPublic", getCB () = _address "libm3cSymPublic" external : p;)
(* Test symbols in libm4 *)
val (SB, _) = _symbol "libm4smlSymPublic" external : p s;
val (CB, _) = _symbol "libm4cSymPublic" external : p s;
val getSB = _import "libm4smlFnPublic" external : i;
val getCB = _import "libm4cFnPublic" external : i;
(* Check function pointers *)
val () = check ("libm4smlFnPublic", SB () = _address "libm4smlFnPublic" external : p;)
val () = check ("libm4cFnPublic", CB () = _address "libm4cFnPublic" external : p;)
(* Check symbol pointers *)
val () = check ("libm4smlSymPublic", getSB () = _address "libm4smlSymPublic" external : p;)
val () = check ("libm4cSymPublic", getCB () = _address "libm4cSymPublic" external : p;)
val () = print "m5 pointer test complete.\n"
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