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32d0add0a6
gdb/ChangeLog: Update year range in copyright notice of all files.
449 lines
12 KiB
C
449 lines
12 KiB
C
/* Skipping uninteresting files and functions while stepping.
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Copyright (C) 2011-2015 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "skip.h"
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#include "value.h"
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#include "valprint.h"
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#include "ui-out.h"
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#include "symtab.h"
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#include "gdbcmd.h"
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#include "command.h"
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#include "completer.h"
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#include "stack.h"
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#include "cli/cli-utils.h"
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#include "arch-utils.h"
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#include "linespec.h"
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#include "objfiles.h"
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#include "breakpoint.h" /* for get_sal_arch () */
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#include "source.h"
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#include "filenames.h"
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struct skiplist_entry
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{
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int number;
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/* NULL if this isn't a skiplist entry for an entire file.
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The skiplist entry owns this pointer. */
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char *filename;
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/* The name of the marked-for-skip function, if this is a skiplist
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entry for a function.
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The skiplist entry owns this pointer. */
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char *function_name;
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int enabled;
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struct skiplist_entry *next;
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};
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static void add_skiplist_entry (struct skiplist_entry *e);
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static void skip_function (const char *name);
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static struct skiplist_entry *skiplist_entry_chain;
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static int skiplist_entry_count;
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#define ALL_SKIPLIST_ENTRIES(E) \
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for (E = skiplist_entry_chain; E; E = E->next)
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#define ALL_SKIPLIST_ENTRIES_SAFE(E,TMP) \
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for (E = skiplist_entry_chain; \
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E ? (TMP = E->next, 1) : 0; \
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E = TMP)
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static void
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skip_file_command (char *arg, int from_tty)
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{
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struct skiplist_entry *e;
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struct symtab *symtab;
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const char *filename = NULL;
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/* If no argument was given, try to default to the last
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displayed codepoint. */
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if (arg == NULL)
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{
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symtab = get_last_displayed_symtab ();
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if (symtab == NULL)
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error (_("No default file now."));
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/* It is not a typo, symtab_to_filename_for_display woule be needlessly
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ambiguous. */
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filename = symtab_to_fullname (symtab);
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}
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else
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{
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symtab = lookup_symtab (arg);
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if (symtab == NULL)
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{
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fprintf_filtered (gdb_stderr, _("No source file named %s.\n"), arg);
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if (!nquery (_("\
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Ignore file pending future shared library load? ")))
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return;
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}
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/* Do not use SYMTAB's filename, later loaded shared libraries may match
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given ARG but not SYMTAB's filename. */
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filename = arg;
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}
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e = XCNEW (struct skiplist_entry);
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e->filename = xstrdup (filename);
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e->enabled = 1;
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add_skiplist_entry (e);
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printf_filtered (_("File %s will be skipped when stepping.\n"), filename);
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}
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static void
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skip_function_command (char *arg, int from_tty)
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{
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const char *name = NULL;
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/* Default to the current function if no argument is given. */
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if (arg == NULL)
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{
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CORE_ADDR pc;
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if (!last_displayed_sal_is_valid ())
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error (_("No default function now."));
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pc = get_last_displayed_addr ();
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if (!find_pc_partial_function (pc, &name, NULL, NULL))
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{
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error (_("No function found containing current program point %s."),
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paddress (get_current_arch (), pc));
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}
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skip_function (name);
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}
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else
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{
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if (lookup_symbol (arg, NULL, VAR_DOMAIN, NULL) == NULL)
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{
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fprintf_filtered (gdb_stderr,
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_("No function found named %s.\n"), arg);
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if (nquery (_("\
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Ignore function pending future shared library load? ")))
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{
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/* Add the unverified skiplist entry. */
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skip_function (arg);
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}
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return;
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}
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skip_function (arg);
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}
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}
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static void
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skip_info (char *arg, int from_tty)
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{
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struct skiplist_entry *e;
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int num_printable_entries = 0;
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struct value_print_options opts;
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struct cleanup *tbl_chain;
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get_user_print_options (&opts);
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/* Count the number of rows in the table and see if we need space for a
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64-bit address anywhere. */
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ALL_SKIPLIST_ENTRIES (e)
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if (arg == NULL || number_is_in_list (arg, e->number))
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num_printable_entries++;
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if (num_printable_entries == 0)
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{
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if (arg == NULL)
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ui_out_message (current_uiout, 0, _("\
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Not skipping any files or functions.\n"));
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else
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ui_out_message (current_uiout, 0,
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_("No skiplist entries found with number %s.\n"), arg);
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return;
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}
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tbl_chain = make_cleanup_ui_out_table_begin_end (current_uiout, 4,
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num_printable_entries,
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"SkiplistTable");
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ui_out_table_header (current_uiout, 7, ui_left, "number", "Num"); /* 1 */
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ui_out_table_header (current_uiout, 14, ui_left, "type", "Type"); /* 2 */
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ui_out_table_header (current_uiout, 3, ui_left, "enabled", "Enb"); /* 3 */
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ui_out_table_header (current_uiout, 40, ui_noalign, "what", "What"); /* 4 */
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ui_out_table_body (current_uiout);
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ALL_SKIPLIST_ENTRIES (e)
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{
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struct cleanup *entry_chain;
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QUIT;
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if (arg != NULL && !number_is_in_list (arg, e->number))
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continue;
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entry_chain = make_cleanup_ui_out_tuple_begin_end (current_uiout,
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"blklst-entry");
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ui_out_field_int (current_uiout, "number", e->number); /* 1 */
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if (e->function_name != NULL)
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ui_out_field_string (current_uiout, "type", "function"); /* 2 */
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else if (e->filename != NULL)
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ui_out_field_string (current_uiout, "type", "file"); /* 2 */
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else
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internal_error (__FILE__, __LINE__, _("\
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Skiplist entry should have either a filename or a function name."));
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if (e->enabled)
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ui_out_field_string (current_uiout, "enabled", "y"); /* 3 */
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else
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ui_out_field_string (current_uiout, "enabled", "n"); /* 3 */
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if (e->function_name != NULL)
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ui_out_field_string (current_uiout, "what", e->function_name); /* 4 */
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else if (e->filename != NULL)
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ui_out_field_string (current_uiout, "what", e->filename); /* 4 */
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ui_out_text (current_uiout, "\n");
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do_cleanups (entry_chain);
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}
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do_cleanups (tbl_chain);
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}
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static void
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skip_enable_command (char *arg, int from_tty)
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{
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struct skiplist_entry *e;
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int found = 0;
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ALL_SKIPLIST_ENTRIES (e)
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if (arg == NULL || number_is_in_list (arg, e->number))
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{
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e->enabled = 1;
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found = 1;
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}
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if (!found)
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error (_("No skiplist entries found with number %s."), arg);
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}
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static void
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skip_disable_command (char *arg, int from_tty)
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{
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struct skiplist_entry *e;
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int found = 0;
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ALL_SKIPLIST_ENTRIES (e)
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if (arg == NULL || number_is_in_list (arg, e->number))
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{
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e->enabled = 0;
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found = 1;
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}
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if (!found)
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error (_("No skiplist entries found with number %s."), arg);
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}
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static void
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skip_delete_command (char *arg, int from_tty)
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{
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struct skiplist_entry *e, *temp, *b_prev;
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int found = 0;
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b_prev = 0;
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ALL_SKIPLIST_ENTRIES_SAFE (e, temp)
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if (arg == NULL || number_is_in_list (arg, e->number))
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{
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if (b_prev != NULL)
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b_prev->next = e->next;
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else
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skiplist_entry_chain = e->next;
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xfree (e->function_name);
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xfree (e->filename);
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xfree (e);
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found = 1;
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}
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else
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{
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b_prev = e;
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}
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if (!found)
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error (_("No skiplist entries found with number %s."), arg);
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}
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/* Create a skiplist entry for the given function NAME and add it to the
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list. */
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static void
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skip_function (const char *name)
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{
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struct skiplist_entry *e = XCNEW (struct skiplist_entry);
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e->enabled = 1;
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e->function_name = xstrdup (name);
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add_skiplist_entry (e);
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printf_filtered (_("Function %s will be skipped when stepping.\n"), name);
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}
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/* Add the given skiplist entry to our list, and set the entry's number. */
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static void
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add_skiplist_entry (struct skiplist_entry *e)
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{
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struct skiplist_entry *e1;
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e->number = ++skiplist_entry_count;
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/* Add to the end of the chain so that the list of
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skiplist entries will be in numerical order. */
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e1 = skiplist_entry_chain;
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if (e1 == NULL)
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skiplist_entry_chain = e;
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else
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{
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while (e1->next)
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e1 = e1->next;
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e1->next = e;
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}
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}
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/* See skip.h. */
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int
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function_name_is_marked_for_skip (const char *function_name,
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const struct symtab_and_line *function_sal)
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{
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int searched_for_fullname = 0;
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const char *fullname = NULL;
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struct skiplist_entry *e;
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if (function_name == NULL)
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return 0;
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ALL_SKIPLIST_ENTRIES (e)
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{
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if (!e->enabled)
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continue;
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/* Does the pc we're stepping into match e's stored pc? */
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if (e->function_name != NULL
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&& strcmp_iw (function_name, e->function_name) == 0)
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return 1;
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if (e->filename != NULL)
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{
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/* Check first sole SYMTAB->FILENAME. It does not need to be
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a substring of symtab_to_fullname as it may contain "./" etc. */
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if (function_sal->symtab != NULL
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&& compare_filenames_for_search (function_sal->symtab->filename,
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e->filename))
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return 1;
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/* Before we invoke realpath, which can get expensive when many
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files are involved, do a quick comparison of the basenames. */
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if (!basenames_may_differ
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&& (function_sal->symtab == NULL
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|| filename_cmp (lbasename (function_sal->symtab->filename),
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lbasename (e->filename)) != 0))
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continue;
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/* Get the filename corresponding to this FUNCTION_SAL, if we haven't
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yet. */
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if (!searched_for_fullname)
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{
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if (function_sal->symtab != NULL)
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fullname = symtab_to_fullname (function_sal->symtab);
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searched_for_fullname = 1;
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}
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if (fullname != NULL
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&& compare_filenames_for_search (fullname, e->filename))
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return 1;
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}
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}
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return 0;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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extern initialize_file_ftype _initialize_step_skip;
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void
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_initialize_step_skip (void)
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{
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static struct cmd_list_element *skiplist = NULL;
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struct cmd_list_element *c;
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skiplist_entry_chain = 0;
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skiplist_entry_count = 0;
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add_prefix_cmd ("skip", class_breakpoint, skip_function_command, _("\
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Ignore a function while stepping.\n\
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Usage: skip [FUNCTION NAME]\n\
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If no function name is given, ignore the current function."),
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&skiplist, "skip ", 1, &cmdlist);
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c = add_cmd ("file", class_breakpoint, skip_file_command, _("\
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Ignore a file while stepping.\n\
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Usage: skip file [FILENAME]\n\
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If no filename is given, ignore the current file."),
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&skiplist);
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set_cmd_completer (c, filename_completer);
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c = add_cmd ("function", class_breakpoint, skip_function_command, _("\
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Ignore a function while stepping.\n\
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Usage: skip function [FUNCTION NAME]\n\
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If no function name is given, skip the current function."),
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&skiplist);
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set_cmd_completer (c, location_completer);
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add_cmd ("enable", class_breakpoint, skip_enable_command, _("\
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Enable skip entries. You can specify numbers (e.g. \"skip enable 1 3\"), \
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ranges (e.g. \"skip enable 4-8\"), or both (e.g. \"skip enable 1 3 4-8\").\n\n\
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If you don't specify any numbers or ranges, we'll enable all skip entries.\n\n\
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Usage: skip enable [NUMBERS AND/OR RANGES]"),
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&skiplist);
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add_cmd ("disable", class_breakpoint, skip_disable_command, _("\
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Disable skip entries. You can specify numbers (e.g. \"skip disable 1 3\"), \
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ranges (e.g. \"skip disable 4-8\"), or both (e.g. \"skip disable 1 3 4-8\").\n\n\
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If you don't specify any numbers or ranges, we'll disable all skip entries.\n\n\
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Usage: skip disable [NUMBERS AND/OR RANGES]"),
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&skiplist);
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add_cmd ("delete", class_breakpoint, skip_delete_command, _("\
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Delete skip entries. You can specify numbers (e.g. \"skip delete 1 3\"), \
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ranges (e.g. \"skip delete 4-8\"), or both (e.g. \"skip delete 1 3 4-8\").\n\n\
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If you don't specify any numbers or ranges, we'll delete all skip entries.\n\n\
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Usage: skip delete [NUMBERS AND/OR RANGES]"),
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&skiplist);
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add_info ("skip", skip_info, _("\
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Display the status of skips. You can specify numbers (e.g. \"skip info 1 3\"), \
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ranges (e.g. \"skip info 4-8\"), or both (e.g. \"skip info 1 3 4-8\").\n\n\
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If you don't specify any numbers or ranges, we'll show all skips.\n\n\
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Usage: skip info [NUMBERS AND/OR RANGES]\n\
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The \"Type\" column indicates one of:\n\
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\tfile - ignored file\n\
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\tfunction - ignored function"));
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}
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