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introduce call_function_by_hand_dummy

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This provides a variant of call_function_by_hand that allows the dummy
frame destructor to be set.  This is used by the compiler code to
manage some resources when calling the gdb-generated inferior
function.

gdb/ChangeLog
2014-12-12  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* infcall.h (call_function_by_hand_dummy): Declare.
	* infcall.c (call_function_by_hand): Use
	call_function_by_hand_dummy.
	(call_function_by_hand_dummy): Rename from call_function_by_hand.
	Add arguments.  Register a destructor.
This commit is contained in:
Jan Kratochvil
2014-05-14 14:16:22 -06:00
parent ac04f72bb4
commit ed12ef62cc
3 changed files with 34 additions and 1 deletions
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16
gdb/infcall.c
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@@ -456,6 +456,14 @@ cleanup_delete_std_terminate_breakpoint (void *ignore)
delete_std_terminate_breakpoint ();
}
/* See infcall.h. */
struct value *
call_function_by_hand (struct value *function, int nargs, struct value **args)
{
return call_function_by_hand_dummy (function, nargs, args, NULL, NULL);
}
/* All this stuff with a dummy frame may seem unnecessarily complicated
(why not just save registers in GDB?). The purpose of pushing a dummy
frame which looks just like a real frame is so that if you call a
@@ -475,7 +483,10 @@ cleanup_delete_std_terminate_breakpoint (void *ignore)
ARGS is modified to contain coerced values. */
struct value *
call_function_by_hand (struct value *function, int nargs, struct value **args)
call_function_by_hand_dummy (struct value *function,
int nargs, struct value **args,
call_function_by_hand_dummy_dtor_ftype *dummy_dtor,
void *dummy_dtor_data)
{
CORE_ADDR sp;
struct type *values_type, *target_values_type;
@@ -874,6 +885,9 @@ call_function_by_hand (struct value *function, int nargs, struct value **args)
caller (and identify the dummy-frame) onto the dummy-frame
stack. */
dummy_frame_push (caller_state, &dummy_id, inferior_ptid);
if (dummy_dtor != NULL)
register_dummy_frame_dtor (dummy_id, inferior_ptid,
dummy_dtor, dummy_dtor_data);
/* Discard both inf_status and caller_state cleanups.
From this point on we explicitly restore the associated state