/* Cache and manage frames for GDB, the GNU debugger.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "frame-base.h"
#include "command.h"
#include "gdbcmd.h"
-#include "observer.h"
+#include "observable.h"
#include "objfiles.h"
#include "gdbthread.h"
#include "block.h"
struct program_space *pspace;
/* The frame's address space. */
- struct address_space *aspace;
+ const address_space *aspace;
/* The frame's low-level unwinder and corresponding cache. The
low-level unwinder is responsible for unwinding register values
return REG_VALID;
}
-std::unique_ptr<struct regcache>
+std::unique_ptr<readonly_detached_regcache>
frame_save_as_regcache (struct frame_info *this_frame)
{
- struct address_space *aspace = get_frame_address_space (this_frame);
- std::unique_ptr<struct regcache> regcache
- (new struct regcache (get_frame_arch (this_frame), aspace));
+ std::unique_ptr<readonly_detached_regcache> regcache
+ (new readonly_detached_regcache (get_frame_arch (this_frame),
+ do_frame_register_read, this_frame));
- regcache_save (regcache.get (), do_frame_register_read, this_frame);
return regcache;
}
Save them in a scratch buffer so that there isn't a race between
trying to extract the old values from the current regcache while
at the same time writing new values into that same cache. */
- std::unique_ptr<struct regcache> scratch
+ std::unique_ptr<readonly_detached_regcache> scratch
= frame_save_as_regcache (prev_frame);
/* FIXME: cagney/2003-03-16: It should be possible to tell the
Unfortunately, they don't implement it. Their lack of a formal
definition can lead to targets writing back bogus values
(arguably a bug in the target code mind). */
- /* Now copy those saved registers into the current regcache.
- Here, regcache_cpy() calls regcache_restore(). */
- regcache_cpy (get_current_regcache (), scratch.get ());
+ /* Now copy those saved registers into the current regcache. */
+ get_current_regcache ()->restore (scratch.get ());
/* We've made right mess of GDB's local state, just discard
everything. */
/* Dispose of the new value. This prevents watchpoints from
trying to watch the saved frame pointer. */
release_value (value);
- value_free (value);
}
void
byte_order);
release_value (value);
- value_free (value);
return r;
}
byte_order);
release_value (value);
- value_free (value);
return r;
}
if (*optimizedp || *unavailablep)
{
release_value (value);
- value_free (value);
return 0;
}
memcpy (myaddr, value_contents_all (value) + offset, curr_len);
release_value (value);
- value_free (value);
}
myaddr += curr_len;
curr_len);
put_frame_register (frame, regnum, value_contents_raw (value));
release_value (value);
- value_free (value);
}
myaddr += curr_len;
frame->level = -1;
frame->pspace = pspace;
- frame->aspace = get_regcache_aspace (regcache);
+ frame->aspace = regcache->aspace ();
/* Explicitly initialize the sentinel frame's cache. Provide it
with the underlying regcache. In the future additional
information, such as the frame's thread will be added. */
}
}
-#if GDB_SELF_TEST
-struct frame_info *
-create_test_frame (struct regcache *regcache)
-{
- struct frame_info *this_frame = XCNEW (struct frame_info);
-
- sentinel_frame = create_sentinel_frame (NULL, regcache);
- sentinel_frame->prev = this_frame;
- sentinel_frame->prev_p = 1;;
- this_frame->prev_arch.p = 1;
- this_frame->prev_arch.arch = get_regcache_arch (regcache);
- this_frame->next = sentinel_frame;
-
- return this_frame;
-}
-#endif
-
/* Create an arbitrary (i.e. address specified by user) or innermost frame.
Always returns a non-NULL value. */
returned. */
maddr = gdbarch_convert_from_func_ptr_addr (get_frame_arch (this_frame),
BMSYMBOL_VALUE_ADDRESS (msymbol),
- ¤t_target);
+ target_stack);
return maddr == get_frame_func (this_frame);
}
return this_frame->pspace;
}
-struct address_space *
+const address_space *
get_frame_address_space (struct frame_info *frame)
{
return frame->aspace;
/* Clean up after a failed (wrong unwinder) attempt to unwind past
FRAME. */
-static void
-frame_cleanup_after_sniffer (void *arg)
+void
+frame_cleanup_after_sniffer (struct frame_info *frame)
{
- struct frame_info *frame = (struct frame_info *) arg;
-
/* The sniffer should not allocate a prologue cache if it did not
match this frame. */
gdb_assert (frame->prologue_cache == NULL);
}
/* Set FRAME's unwinder temporarily, so that we can call a sniffer.
- Return a cleanup which should be called if unwinding fails, and
- discarded if it succeeds. */
+ If sniffing fails, the caller should be sure to call
+ frame_cleanup_after_sniffer. */
-struct cleanup *
+void
frame_prepare_for_sniffer (struct frame_info *frame,
const struct frame_unwind *unwind)
{
gdb_assert (frame->unwind == NULL);
frame->unwind = unwind;
- return make_cleanup (frame_cleanup_after_sniffer, frame);
}
static struct cmd_list_element *set_backtrace_cmdlist;
static struct cmd_list_element *show_backtrace_cmdlist;
static void
-set_backtrace_cmd (char *args, int from_tty)
+set_backtrace_cmd (const char *args, int from_tty)
{
help_list (set_backtrace_cmdlist, "set backtrace ", all_commands,
gdb_stdout);
}
static void
-show_backtrace_cmd (char *args, int from_tty)
+show_backtrace_cmd (const char *args, int from_tty)
{
cmd_show_list (show_backtrace_cmdlist, from_tty, "");
}
frame_stash_create ();
- observer_attach_target_changed (frame_observer_target_changed);
+ gdb::observers::target_changed.attach (frame_observer_target_changed);
add_prefix_cmd ("backtrace", class_maintenance, set_backtrace_cmd, _("\
Set backtrace specific variables.\n\
projects / deliverable / binutils-gdb.git / blobdiff