/* Perform an inferior function call, for GDB, the GNU debugger.
- Copyright (C) 1986-2015 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "infcall.h"
#include "breakpoint.h"
#include "tracepoint.h"
#include "target.h"
#include "objfiles.h"
#include "gdbcmd.h"
#include "command.h"
-#include "infcall.h"
#include "dummy-frame.h"
#include "ada-lang.h"
#include "gdbthread.h"
Unfortunately, on certain older platforms, the debug info doesn't
indicate reliably how each function was defined. A function type's
- TYPE_FLAG_PROTOTYPED flag may be clear, even if the function was
- defined in prototype style. When calling a function whose
- TYPE_FLAG_PROTOTYPED flag is clear, GDB consults this flag to
- decide what to do.
+ TYPE_PROTOTYPED flag may be clear, even if the function was defined
+ in prototype style. When calling a function whose TYPE_PROTOTYPED
+ flag is clear, GDB consults this flag to decide what to do.
For modern targets, it is proper to assume that, if the prototype
flag is clear, that can be trusted: `float' arguments should be
switch (TYPE_CODE (type))
{
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
{
struct value *new_value;
- if (TYPE_CODE (arg_type) == TYPE_CODE_REF)
+ if (TYPE_IS_REFERENCE (arg_type))
return value_cast_pointers (type, arg, 0);
/* Cast the value to the reference's target type, and then
if the value was not previously in memory - in some cases
we should clearly be allowing this, but how? */
new_value = value_cast (TYPE_TARGET_TYPE (type), arg);
- new_value = value_ref (new_value);
+ new_value = value_ref (new_value, TYPE_CODE (type));
return new_value;
}
case TYPE_CODE_INT:
/* The called function's return value. This is extracted from the
target before the dummy frame is popped. */
struct value *return_value;
+
+ /* The top level that started the infcall (and is synchronously
+ waiting for it to end). */
+ struct ui *waiting_ui;
};
-static int call_thread_fsm_should_stop (struct thread_fsm *self);
+static int call_thread_fsm_should_stop (struct thread_fsm *self,
+ struct thread_info *thread);
static int call_thread_fsm_should_notify_stop (struct thread_fsm *self);
/* call_thread_fsm's vtable. */
/* Allocate a new call_thread_fsm object. */
static struct call_thread_fsm *
-new_call_thread_fsm (struct gdbarch *gdbarch, struct value *function,
+new_call_thread_fsm (struct ui *waiting_ui, struct interp *cmd_interp,
+ struct gdbarch *gdbarch, struct value *function,
struct type *value_type,
int struct_return_p, CORE_ADDR struct_addr)
{
struct call_thread_fsm *sm;
sm = XCNEW (struct call_thread_fsm);
- thread_fsm_ctor (&sm->thread_fsm, &call_thread_fsm_ops);
+ thread_fsm_ctor (&sm->thread_fsm, &call_thread_fsm_ops, cmd_interp);
sm->return_meta_info.gdbarch = gdbarch;
sm->return_meta_info.function = function;
sm->return_meta_info.struct_return_p = struct_return_p;
sm->return_meta_info.struct_addr = struct_addr;
+ sm->waiting_ui = waiting_ui;
+
return sm;
}
/* Implementation of should_stop method for infcalls. */
static int
-call_thread_fsm_should_stop (struct thread_fsm *self)
+call_thread_fsm_should_stop (struct thread_fsm *self,
+ struct thread_info *thread)
{
struct call_thread_fsm *f = (struct call_thread_fsm *) self;
f->return_value = get_call_return_value (&f->return_meta_info);
/* Break out of wait_sync_command_done. */
- async_enable_stdin ();
+ scoped_restore save_ui = make_scoped_restore (¤t_ui, f->waiting_ui);
+ target_terminal_ours ();
+ f->waiting_ui->prompt_state = PROMPT_NEEDED;
}
return 1;
struct gdb_exception caught_error = exception_none;
int saved_in_infcall = call_thread->control.in_infcall;
ptid_t call_thread_ptid = call_thread->ptid;
- int saved_sync_execution = sync_execution;
+ enum prompt_state saved_prompt_state = current_ui->prompt_state;
int was_running = call_thread->state == THREAD_RUNNING;
- int saved_interpreter_async = interpreter_async;
+ int saved_ui_async = current_ui->async;
/* Infcalls run synchronously, in the foreground. */
- sync_execution = 1;
+ current_ui->prompt_state = PROMPT_BLOCKED;
/* So that we don't print the prompt prematurely in
fetch_inferior_event. */
- interpreter_async = 0;
+ current_ui->async = 0;
+
+ delete_file_handler (current_ui->input_fd);
call_thread->control.in_infcall = 1;
}
END_CATCH
- /* If GDB was previously in sync execution mode, then ensure that it
- remains so. normal_stop calls async_enable_stdin, so reset it
- again here. In other cases, stdin will be re-enabled by
+ /* If GDB has the prompt blocked before, then ensure that it remains
+ so. normal_stop calls async_enable_stdin, so reset the prompt
+ state again here. In other cases, stdin will be re-enabled by
inferior_event_handler, when an exception is thrown. */
- sync_execution = saved_sync_execution;
- interpreter_async = saved_interpreter_async;
+ current_ui->prompt_state = saved_prompt_state;
+ if (current_ui->prompt_state == PROMPT_BLOCKED)
+ delete_file_handler (current_ui->input_fd);
+ else
+ ui_register_input_event_handler (current_ui);
+ current_ui->async = saved_ui_async;
/* At this point the current thread may have changed. Refresh
CALL_THREAD as it could be invalid if its thread has exited. */
return call_function_by_hand_dummy (function, nargs, args, NULL, NULL);
}
-/* Data for dummy_frame_context_saver. Structure can be freed only
- after both dummy_frame_context_saver_dtor and
- dummy_frame_context_saver_drop have been called for it. */
-
-struct dummy_frame_context_saver
-{
- /* Inferior registers fetched before associated dummy_frame got freed
- and before any other destructors of associated dummy_frame got called.
- It is initialized to NULL. */
- struct regcache *retbuf;
-
- /* It is 1 if this dummy_frame_context_saver_drop has been already
- called. */
- int drop_done;
-};
-
-/* Free struct dummy_frame_context_saver. */
-
-static void
-dummy_frame_context_saver_free (struct dummy_frame_context_saver *saver)
-{
- regcache_xfree (saver->retbuf);
- xfree (saver);
-}
-
-/* Destructor for associated dummy_frame. */
-
-static void
-dummy_frame_context_saver_dtor (void *data_voidp, int registers_valid)
-{
- struct dummy_frame_context_saver *data = data_voidp;
-
- gdb_assert (data->retbuf == NULL);
-
- if (data->drop_done)
- dummy_frame_context_saver_free (data);
- else if (registers_valid)
- data->retbuf = regcache_dup (get_current_regcache ());
-}
-
-/* Caller is no longer interested in this
- struct dummy_frame_context_saver. After its associated dummy_frame
- gets freed struct dummy_frame_context_saver can be also freed. */
-
-void
-dummy_frame_context_saver_drop (struct dummy_frame_context_saver *saver)
-{
- saver->drop_done = 1;
-
- if (!find_dummy_frame_dtor (dummy_frame_context_saver_dtor, saver))
- dummy_frame_context_saver_free (saver);
-}
-
-/* Stub dummy_frame_context_saver_drop compatible with make_cleanup. */
-
-void
-dummy_frame_context_saver_cleanup (void *data)
-{
- struct dummy_frame_context_saver *saver = data;
-
- dummy_frame_context_saver_drop (saver);
-}
-
-/* Fetch RETBUF field of possibly opaque DTOR_DATA.
- RETBUF must not be NULL. */
-
-struct regcache *
-dummy_frame_context_saver_get_regs (struct dummy_frame_context_saver *saver)
-{
- gdb_assert (saver->retbuf != NULL);
- return saver->retbuf;
-}
-
-/* Register provider of inferior registers at the time DUMMY_ID frame of
- PTID gets freed (before inferior registers get restored to those
- before dummy_frame). */
-
-struct dummy_frame_context_saver *
-dummy_frame_context_saver_setup (struct frame_id dummy_id, ptid_t ptid)
-{
- struct dummy_frame_context_saver *saver =
- XNEW (struct dummy_frame_context_saver);
-
- saver->retbuf = NULL;
- saver->drop_done = 0;
- register_dummy_frame_dtor (dummy_id, inferior_ptid,
- dummy_frame_context_saver_dtor, saver);
- return saver;
-}
-
/* 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
not report the stop to the user, and captures the return value
before the dummy frame is popped. run_inferior_call registers
it with the thread ASAP. */
- sm = new_call_thread_fsm (gdbarch, function,
+ sm = new_call_thread_fsm (current_ui, command_interp (),
+ gdbarch, function,
values_type,
struct_return || hidden_first_param_p,
struct_addr);
/* Clean up / destroy the call FSM, and restore the
original one. */
- thread_fsm_clean_up (tp->thread_fsm);
+ thread_fsm_clean_up (tp->thread_fsm, tp);
thread_fsm_delete (tp->thread_fsm);
tp->thread_fsm = saved_sm;
projects / deliverable / binutils-gdb.git / blobdiff