/* Reverse execution and reverse debugging.
- Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "top.h"
#include "cli/cli-cmds.h"
#include "cli/cli-decode.h"
+#include "cli/cli-utils.h"
#include "inferior.h"
+#include "regcache.h"
/* User interface:
reverse-step, reverse-next etc. */
exec_reverse_once ("finish", args, from_tty);
}
+/* Data structures for a bookmark list. */
+
+struct bookmark {
+ struct bookmark *next;
+ int number;
+ CORE_ADDR pc;
+ struct symtab_and_line sal;
+ gdb_byte *opaque_data;
+};
+
+static struct bookmark *bookmark_chain;
+static int bookmark_count;
+
+#define ALL_BOOKMARKS(B) for ((B) = bookmark_chain; (B); (B) = (B)->next)
+
+#define ALL_BOOKMARKS_SAFE(B,TMP) \
+ for ((B) = bookmark_chain; \
+ (B) ? ((TMP) = (B)->next, 1) : 0; \
+ (B) = (TMP))
+
+/* save_bookmark_command -- implement "bookmark" command.
+ Call target method to get a bookmark identifier.
+ Insert bookmark identifier into list.
+
+ Identifier will be a malloc string (gdb_byte *).
+ Up to us to free it as required. */
+
+static void
+save_bookmark_command (char *args, int from_tty)
+{
+ /* Get target's idea of a bookmark. */
+ gdb_byte *bookmark_id = target_get_bookmark (args, from_tty);
+ struct bookmark *b, *b1;
+ struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ());
+
+ /* CR should not cause another identical bookmark. */
+ dont_repeat ();
+
+ if (bookmark_id == NULL)
+ error (_("target_get_bookmark failed."));
+
+ /* Set up a bookmark struct. */
+ b = xcalloc (1, sizeof (struct bookmark));
+ b->number = ++bookmark_count;
+ init_sal (&b->sal);
+ b->pc = regcache_read_pc (get_current_regcache ());
+ b->sal = find_pc_line (b->pc, 0);
+ b->sal.pspace = get_frame_program_space (get_current_frame ());
+ b->opaque_data = bookmark_id;
+ b->next = NULL;
+
+ /* Add this bookmark to the end of the chain, so that a list
+ of bookmarks will come out in order of increasing numbers. */
+
+ b1 = bookmark_chain;
+ if (b1 == 0)
+ bookmark_chain = b;
+ else
+ {
+ while (b1->next)
+ b1 = b1->next;
+ b1->next = b;
+ }
+ printf_filtered (_("Saved bookmark %d at %s\n"), b->number,
+ paddress (gdbarch, b->sal.pc));
+}
+
+/* Implement "delete bookmark" command. */
+
+static int
+delete_one_bookmark (int num)
+{
+ struct bookmark *b1, *b;
+
+ /* Find bookmark with corresponding number. */
+ ALL_BOOKMARKS (b)
+ if (b->number == num)
+ break;
+
+ /* Special case, first item in list. */
+ if (b == bookmark_chain)
+ bookmark_chain = b->next;
+
+ /* Find bookmark preceeding "marked" one, so we can unlink. */
+ if (b)
+ {
+ ALL_BOOKMARKS (b1)
+ if (b1->next == b)
+ {
+ /* Found designated bookmark. Unlink and delete. */
+ b1->next = b->next;
+ break;
+ }
+ xfree (b->opaque_data);
+ xfree (b);
+ return 1; /* success */
+ }
+ return 0; /* failure */
+}
+
+static void
+delete_all_bookmarks (void)
+{
+ struct bookmark *b, *b1;
+
+ ALL_BOOKMARKS_SAFE (b, b1)
+ {
+ xfree (b->opaque_data);
+ xfree (b);
+ }
+ bookmark_chain = NULL;
+}
+
+static void
+delete_bookmark_command (char *args, int from_tty)
+{
+ struct bookmark *b;
+ int num;
+ struct get_number_or_range_state state;
+
+ if (bookmark_chain == NULL)
+ {
+ warning (_("No bookmarks."));
+ return;
+ }
+
+ if (args == NULL || args[0] == '\0')
+ {
+ if (from_tty && !query (_("Delete all bookmarks? ")))
+ return;
+ delete_all_bookmarks ();
+ return;
+ }
+
+ init_number_or_range (&state, args);
+ while (!state.finished)
+ {
+ num = get_number_or_range (&state);
+ if (!delete_one_bookmark (num))
+ /* Not found. */
+ warning (_("No bookmark #%d."), num);
+ }
+}
+
+/* Implement "goto-bookmark" command. */
+
+static void
+goto_bookmark_command (char *args, int from_tty)
+{
+ struct bookmark *b;
+ unsigned long num;
+
+ if (args == NULL || args[0] == '\0')
+ error (_("Command requires an argument."));
+
+ if (strncmp (args, "start", strlen ("start")) == 0
+ || strncmp (args, "begin", strlen ("begin")) == 0
+ || strncmp (args, "end", strlen ("end")) == 0)
+ {
+ /* Special case. Give target opportunity to handle. */
+ target_goto_bookmark (args, from_tty);
+ return;
+ }
+
+ if (args[0] == '\'' || args[0] == '\"')
+ {
+ /* Special case -- quoted string. Pass on to target. */
+ if (args[strlen (args) - 1] != args[0])
+ error (_("Unbalanced quotes: %s"), args);
+ target_goto_bookmark (args, from_tty);
+ return;
+ }
+
+ /* General case. Bookmark identified by bookmark number. */
+ num = get_number (&args);
+ ALL_BOOKMARKS (b)
+ if (b->number == num)
+ break;
+
+ if (b)
+ {
+ /* Found. Send to target method. */
+ target_goto_bookmark (b->opaque_data, from_tty);
+ return;
+ }
+ /* Not found. */
+ error (_("goto-bookmark: no bookmark found for '%s'."), args);
+}
+
+static int
+bookmark_1 (int bnum)
+{
+ struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ());
+ struct bookmark *b;
+ int matched = 0;
+
+ ALL_BOOKMARKS (b)
+ {
+ if (bnum == -1 || bnum == b->number)
+ {
+ printf_filtered (" %d %s '%s'\n",
+ b->number,
+ paddress (gdbarch, b->pc),
+ b->opaque_data);
+ matched++;
+ }
+ }
+
+ if (bnum > 0 && matched == 0)
+ printf_filtered ("No bookmark #%d\n", bnum);
+
+ return matched;
+}
+
+/* Implement "info bookmarks" command. */
+
+static void
+bookmarks_info (char *args, int from_tty)
+{
+ int bnum = -1;
+
+ if (!bookmark_chain)
+ printf_filtered (_("No bookmarks.\n"));
+ else if (args == NULL || *args == '\0')
+ bookmark_1 (-1);
+ else
+ {
+ struct get_number_or_range_state state;
+
+ init_number_or_range (&state, args);
+ while (!state.finished)
+ {
+ bnum = get_number_or_range (&state);
+ bookmark_1 (bnum);
+ }
+ }
+}
+
+
/* Provide a prototype to silence -Wmissing-prototypes. */
extern initialize_file_ftype _initialize_reverse;
add_com ("reverse-finish", class_run, reverse_finish, _("\
Execute backward until just before selected stack frame is called."));
+
+ add_com ("bookmark", class_bookmark, save_bookmark_command, _("\
+Set a bookmark in the program's execution history.\n\
+A bookmark represents a point in the execution history \n\
+that can be returned to at a later point in the debug session."));
+ add_info ("bookmarks", bookmarks_info, _("\
+Status of user-settable bookmarks.\n\
+Bookmarks are user-settable markers representing a point in the \n\
+execution history that can be returned to later in the same debug \n\
+session."));
+ add_cmd ("bookmark", class_bookmark, delete_bookmark_command, _("\
+Delete a bookmark from the bookmark list.\n\
+Argument is a bookmark number or numbers,\n\
+ or no argument to delete all bookmarks.\n"),
+ &deletelist);
+ add_com ("goto-bookmark", class_bookmark, goto_bookmark_command, _("\
+Go to an earlier-bookmarked point in the program's execution history.\n\
+Argument is the bookmark number of a bookmark saved earlier by using \n\
+the 'bookmark' command, or the special arguments:\n\
+ start (beginning of recording)\n\
+ end (end of recording)\n"));
}
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