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