/* Code dealing with dummy stack frames, for GDB, the GNU debugger.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "frame-unwind.h"
#include "command.h"
#include "gdbcmd.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
#include "infcall.h"
+#include "gdbarch.h"
struct dummy_frame_id
{
struct frame_id id;
/* The thread this dummy_frame relates to. */
- ptid_t ptid;
+ thread_info *thread;
};
/* Return whether dummy_frame_id *ID1 and *ID2 are equal. */
dummy_frame_id_eq (struct dummy_frame_id *id1,
struct dummy_frame_id *id2)
{
- return frame_id_eq (id1->id, id2->id) && ptid_equal (id1->ptid, id2->ptid);
+ return frame_id_eq (id1->id, id2->id) && id1->thread == id2->thread;
}
/* List of dummy_frame destructors. */
void
dummy_frame_push (struct infcall_suspend_state *caller_state,
- const struct frame_id *dummy_id, ptid_t ptid)
+ const frame_id *dummy_id, thread_info *thread)
{
struct dummy_frame *dummy_frame;
dummy_frame = XCNEW (struct dummy_frame);
dummy_frame->caller_state = caller_state;
dummy_frame->id.id = (*dummy_id);
- dummy_frame->id.ptid = ptid;
+ dummy_frame->id.thread = thread;
dummy_frame->next = dummy_frame_stack;
dummy_frame_stack = dummy_frame;
}
/* Delete any breakpoint B which is a momentary breakpoint for return from
inferior call matching DUMMY_VOIDP. */
-static int
-pop_dummy_frame_bpt (struct breakpoint *b, void *dummy_voidp)
+static bool
+pop_dummy_frame_bpt (struct breakpoint *b, struct dummy_frame *dummy)
{
- struct dummy_frame *dummy = (struct dummy_frame *) dummy_voidp;
-
- if (b->thread == ptid_to_global_thread_id (dummy->id.ptid)
+ if (b->thread == dummy->id.thread->global_num
&& b->disposition == disp_del && frame_id_eq (b->frame_id, dummy->id.id))
{
while (b->related_breakpoint != b)
delete_breakpoint (b);
/* Stop the traversal. */
- return 1;
+ return true;
}
/* Continue the traversal. */
- return 0;
+ return false;
}
/* Pop *DUMMY_PTR, restoring program state to that before the
{
struct dummy_frame *dummy = *dummy_ptr;
- gdb_assert (ptid_equal (dummy->id.ptid, inferior_ptid));
+ gdb_assert (dummy->id.thread == inferior_thread ());
while (dummy->dtor_list != NULL)
{
restore_infcall_suspend_state (dummy->caller_state);
- iterate_over_breakpoints (pop_dummy_frame_bpt, dummy);
+ iterate_over_breakpoints ([dummy] (breakpoint* bp)
+ {
+ return pop_dummy_frame_bpt (bp, dummy);
+ });
/* restore_infcall_control_state frees inf_state,
all that remains is to pop *dummy_ptr. */
return NULL;
}
-/* Find the dummy frame by DUMMY_ID and PTID, and pop it, restoring
+/* Find the dummy frame by DUMMY_ID and THREAD, and pop it, restoring
program state to that before the frame was created.
On return reinit_frame_cache has been called.
If the frame isn't found, flag an internal error. */
void
-dummy_frame_pop (struct frame_id dummy_id, ptid_t ptid)
+dummy_frame_pop (frame_id dummy_id, thread_info *thread)
{
struct dummy_frame **dp;
- struct dummy_frame_id id = { dummy_id, ptid };
+ struct dummy_frame_id id = { dummy_id, thread };
dp = lookup_dummy_frame (&id);
gdb_assert (dp != NULL);
free its memory. */
void
-dummy_frame_discard (struct frame_id dummy_id, ptid_t ptid)
+dummy_frame_discard (struct frame_id dummy_id, thread_info *thread)
{
struct dummy_frame **dp;
- struct dummy_frame_id id = { dummy_id, ptid };
+ struct dummy_frame_id id = { dummy_id, thread };
dp = lookup_dummy_frame (&id);
if (dp)
/* See dummy-frame.h. */
void
-register_dummy_frame_dtor (struct frame_id dummy_id, ptid_t ptid,
+register_dummy_frame_dtor (frame_id dummy_id, thread_info *thread,
dummy_frame_dtor_ftype *dtor, void *dtor_data)
{
- struct dummy_frame_id id = { dummy_id, ptid };
+ struct dummy_frame_id id = { dummy_id, thread };
struct dummy_frame **dp, *d;
struct dummy_frame_dtor_list *list;
struct dummy_frame_cache
{
struct frame_id this_id;
- struct regcache *prev_regcache;
+ readonly_detached_regcache *prev_regcache;
};
static int
dummy ID, assuming it is a dummy frame. */
struct frame_id this_id
= gdbarch_dummy_id (get_frame_arch (this_frame), this_frame);
- struct dummy_frame_id dummy_id = { this_id, inferior_ptid };
+ struct dummy_frame_id dummy_id = { this_id, inferior_thread () };
/* Use that ID to find the corresponding cache entry. */
for (dummyframe = dummy_frame_stack;
/* Use the regcache_cooked_read() method so that it, on the fly,
constructs either a raw or pseudo register from the raw
register cache. */
- regcache_cooked_read (cache->prev_regcache, regnum,
- value_contents_writeable (reg_val));
+ cache->prev_regcache->cooked_read (regnum,
+ value_contents_writeable (reg_val));
return reg_val;
}
dummy_frame_sniffer,
};
+/* See dummy-frame.h. */
+
+struct frame_id
+default_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
+{
+ CORE_ADDR sp, pc;
+
+ sp = get_frame_sp (this_frame);
+ pc = get_frame_pc (this_frame);
+ return frame_id_build (sp, pc);
+}
+
static void
fprint_dummy_frames (struct ui_file *file)
{
fprintf_unfiltered (file, " id=");
fprint_frame_id (file, s->id.id);
fprintf_unfiltered (file, ", ptid=%s",
- target_pid_to_str (s->id.ptid));
+ target_pid_to_str (s->id.thread->ptid).c_str ());
fprintf_unfiltered (file, "\n");
}
}
static void
-maintenance_print_dummy_frames (char *args, int from_tty)
+maintenance_print_dummy_frames (const char *args, int from_tty)
{
if (args == NULL)
fprint_dummy_frames (gdb_stdout);
}
}
+void _initialize_dummy_frame ();
void
-_initialize_dummy_frame (void)
+_initialize_dummy_frame ()
{
add_cmd ("dummy-frames", class_maintenance, maintenance_print_dummy_frames,
_("Print the contents of the internal dummy-frame stack."),
&maintenanceprintlist);
- observer_attach_inferior_created (cleanup_dummy_frames);
+ gdb::observers::inferior_created.attach (cleanup_dummy_frames);
}
projects / deliverable / binutils-gdb.git / blobdiff