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jeremybenn |
/* List lines of source files for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
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1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
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Free Software Foundation, Inc.
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This file is part of GDB.
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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 "symtab.h"
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#include "expression.h"
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#include "language.h"
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#include "command.h"
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#include "source.h"
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#include "gdbcmd.h"
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#include "frame.h"
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#include "value.h"
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#include "gdb_assert.h"
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#include <sys/types.h>
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#include "gdb_string.h"
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#include "gdb_stat.h"
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#include <fcntl.h>
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#include "gdbcore.h"
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#include "gdb_regex.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "annotate.h"
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#include "gdbtypes.h"
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#include "linespec.h"
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#include "filenames.h" /* for DOSish file names */
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#include "completer.h"
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#include "ui-out.h"
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#include "readline/readline.h"
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#define OPEN_MODE (O_RDONLY | O_BINARY)
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#define FDOPEN_MODE FOPEN_RB
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/* Prototypes for exported functions. */
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void _initialize_source (void);
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/* Prototypes for local functions. */
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static int get_filename_and_charpos (struct symtab *, char **);
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static void reverse_search_command (char *, int);
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static void forward_search_command (char *, int);
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static void line_info (char *, int);
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static void source_info (char *, int);
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static void show_directories (char *, int);
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/* Path of directories to search for source files.
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Same format as the PATH environment variable's value. */
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char *source_path;
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/* Support for source path substitution commands. */
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struct substitute_path_rule
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{
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char *from;
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char *to;
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struct substitute_path_rule *next;
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};
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static struct substitute_path_rule *substitute_path_rules = NULL;
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/* Symtab of default file for listing lines of. */
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static struct symtab *current_source_symtab;
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/* Default next line to list. */
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static int current_source_line;
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/* Default number of lines to print with commands like "list".
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This is based on guessing how many long (i.e. more than chars_per_line
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characters) lines there will be. To be completely correct, "list"
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and friends should be rewritten to count characters and see where
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things are wrapping, but that would be a fair amount of work. */
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int lines_to_list = 10;
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static void
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show_lines_to_list (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("\
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Number of source lines gdb will list by default is %s.\n"),
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value);
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}
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/* Line number of last line printed. Default for various commands.
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current_source_line is usually, but not always, the same as this. */
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static int last_line_listed;
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/* First line number listed by last listing command. */
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static int first_line_listed;
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/* Saves the name of the last source file visited and a possible error code.
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Used to prevent repeating annoying "No such file or directories" msgs */
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static struct symtab *last_source_visited = NULL;
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static int last_source_error = 0;
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/* Return the first line listed by print_source_lines.
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Used by command interpreters to request listing from
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a previous point. */
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int
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get_first_line_listed (void)
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{
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return first_line_listed;
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}
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/* Return the default number of lines to print with commands like the
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cli "list". The caller of print_source_lines must use this to
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calculate the end line and use it in the call to print_source_lines
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as it does not automatically use this value. */
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int
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get_lines_to_list (void)
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{
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return lines_to_list;
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}
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/* Return the current source file for listing and next line to list.
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NOTE: The returned sal pc and end fields are not valid. */
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struct symtab_and_line
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get_current_source_symtab_and_line (void)
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{
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struct symtab_and_line cursal = { 0 };
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cursal.symtab = current_source_symtab;
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cursal.line = current_source_line;
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cursal.pc = 0;
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cursal.end = 0;
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return cursal;
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}
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/* If the current source file for listing is not set, try and get a default.
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Usually called before get_current_source_symtab_and_line() is called.
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It may err out if a default cannot be determined.
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We must be cautious about where it is called, as it can recurse as the
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process of determining a new default may call the caller!
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Use get_current_source_symtab_and_line only to get whatever
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we have without erroring out or trying to get a default. */
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void
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set_default_source_symtab_and_line (void)
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{
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struct symtab_and_line cursal;
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if (!have_full_symbols () && !have_partial_symbols ())
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error (_("No symbol table is loaded. Use the \"file\" command."));
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/* Pull in a current source symtab if necessary */
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if (current_source_symtab == 0)
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select_source_symtab (0);
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}
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/* Return the current default file for listing and next line to list
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(the returned sal pc and end fields are not valid.)
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and set the current default to whatever is in SAL.
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NOTE: The returned sal pc and end fields are not valid. */
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struct symtab_and_line
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set_current_source_symtab_and_line (const struct symtab_and_line *sal)
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{
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struct symtab_and_line cursal = { 0 };
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cursal.symtab = current_source_symtab;
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cursal.line = current_source_line;
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current_source_symtab = sal->symtab;
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current_source_line = sal->line;
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cursal.pc = 0;
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cursal.end = 0;
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return cursal;
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}
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/* Reset any information stored about a default file and line to print. */
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void
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clear_current_source_symtab_and_line (void)
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{
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current_source_symtab = 0;
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current_source_line = 0;
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}
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/* Set the source file default for the "list" command to be S.
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If S is NULL, and we don't have a default, find one. This
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should only be called when the user actually tries to use the
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default, since we produce an error if we can't find a reasonable
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default. Also, since this can cause symbols to be read, doing it
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before we need to would make things slower than necessary. */
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void
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select_source_symtab (struct symtab *s)
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{
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struct symtabs_and_lines sals;
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struct symtab_and_line sal;
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struct partial_symtab *ps;
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struct partial_symtab *cs_pst = 0;
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struct objfile *ofp;
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if (s)
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{
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current_source_symtab = s;
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current_source_line = 1;
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return;
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}
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if (current_source_symtab)
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return;
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/* Make the default place to list be the function `main'
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if one exists. */
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if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0, NULL))
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{
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sals = decode_line_spec (main_name (), 1);
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sal = sals.sals[0];
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xfree (sals.sals);
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current_source_symtab = sal.symtab;
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current_source_line = max (sal.line - (lines_to_list - 1), 1);
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if (current_source_symtab)
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return;
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}
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/* All right; find the last file in the symtab list (ignoring .h's). */
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current_source_line = 1;
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for (ofp = object_files; ofp != NULL; ofp = ofp->next)
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{
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for (s = ofp->symtabs; s; s = s->next)
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{
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const char *name = s->filename;
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int len = strlen (name);
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if (!(len > 2 && strcmp(&name[len - 2], ".h") == 0))
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current_source_symtab = s;
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}
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}
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if (current_source_symtab)
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return;
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/* Howabout the partial symbol tables? */
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for (ofp = object_files; ofp != NULL; ofp = ofp->next)
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{
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for (ps = ofp->psymtabs; ps != NULL; ps = ps->next)
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{
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const char *name = ps->filename;
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int len = strlen (name);
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if (!(len > 2 && strcmp (&name[len - 2], ".h") == 0))
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cs_pst = ps;
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}
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}
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if (cs_pst)
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{
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if (cs_pst->readin)
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{
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internal_error (__FILE__, __LINE__,
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_("select_source_symtab: "
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"readin pst found and no symtabs."));
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}
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else
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{
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current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst);
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}
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}
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if (current_source_symtab)
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return;
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297 |
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error (_("Can't find a default source file"));
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}
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300 |
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301 |
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static void
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show_directories (char *ignore, int from_tty)
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{
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304 |
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puts_filtered ("Source directories searched: ");
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puts_filtered (source_path);
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puts_filtered ("\n");
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}
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308 |
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309 |
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/* Forget what we learned about line positions in source files, and
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which directories contain them; must check again now since files
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may be found in a different directory now. */
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312 |
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313 |
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void
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314 |
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forget_cached_source_info (void)
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315 |
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{
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316 |
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struct symtab *s;
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317 |
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struct objfile *objfile;
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318 |
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struct partial_symtab *pst;
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319 |
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for (objfile = object_files; objfile != NULL; objfile = objfile->next)
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{
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322 |
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for (s = objfile->symtabs; s != NULL; s = s->next)
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{
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324 |
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if (s->line_charpos != NULL)
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325 |
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{
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326 |
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xfree (s->line_charpos);
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s->line_charpos = NULL;
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}
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329 |
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if (s->fullname != NULL)
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{
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xfree (s->fullname);
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s->fullname = NULL;
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}
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334 |
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}
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335 |
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336 |
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ALL_OBJFILE_PSYMTABS (objfile, pst)
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337 |
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{
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338 |
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if (pst->fullname != NULL)
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339 |
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{
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340 |
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xfree (pst->fullname);
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341 |
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pst->fullname = NULL;
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342 |
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}
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343 |
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}
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344 |
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}
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345 |
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}
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346 |
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347 |
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void
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348 |
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init_source_path (void)
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349 |
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{
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350 |
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char buf[20];
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351 |
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352 |
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sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR);
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source_path = xstrdup (buf);
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forget_cached_source_info ();
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}
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356 |
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357 |
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void
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358 |
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init_last_source_visited (void)
|
359 |
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{
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360 |
|
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last_source_visited = NULL;
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361 |
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}
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362 |
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363 |
|
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/* Add zero or more directories to the front of the source path. */
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364 |
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|
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365 |
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void
|
366 |
|
|
directory_command (char *dirname, int from_tty)
|
367 |
|
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{
|
368 |
|
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dont_repeat ();
|
369 |
|
|
/* FIXME, this goes to "delete dir"... */
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370 |
|
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if (dirname == 0)
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371 |
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{
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372 |
|
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if (from_tty && query (_("Reinitialize source path to empty? ")))
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373 |
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{
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374 |
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xfree (source_path);
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375 |
|
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init_source_path ();
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376 |
|
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}
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377 |
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}
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378 |
|
|
else
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379 |
|
|
{
|
380 |
|
|
mod_path (dirname, &source_path);
|
381 |
|
|
last_source_visited = NULL;
|
382 |
|
|
}
|
383 |
|
|
if (from_tty)
|
384 |
|
|
show_directories ((char *) 0, from_tty);
|
385 |
|
|
forget_cached_source_info ();
|
386 |
|
|
}
|
387 |
|
|
|
388 |
|
|
/* Add a path given with the -d command line switch.
|
389 |
|
|
This will not be quoted so we must not treat spaces as separators. */
|
390 |
|
|
|
391 |
|
|
void
|
392 |
|
|
directory_switch (char *dirname, int from_tty)
|
393 |
|
|
{
|
394 |
|
|
add_path (dirname, &source_path, 0);
|
395 |
|
|
}
|
396 |
|
|
|
397 |
|
|
/* Add zero or more directories to the front of an arbitrary path. */
|
398 |
|
|
|
399 |
|
|
void
|
400 |
|
|
mod_path (char *dirname, char **which_path)
|
401 |
|
|
{
|
402 |
|
|
add_path (dirname, which_path, 1);
|
403 |
|
|
}
|
404 |
|
|
|
405 |
|
|
/* Workhorse of mod_path. Takes an extra argument to determine
|
406 |
|
|
if dirname should be parsed for separators that indicate multiple
|
407 |
|
|
directories. This allows for interfaces that pre-parse the dirname
|
408 |
|
|
and allow specification of traditional separator characters such
|
409 |
|
|
as space or tab. */
|
410 |
|
|
|
411 |
|
|
void
|
412 |
|
|
add_path (char *dirname, char **which_path, int parse_separators)
|
413 |
|
|
{
|
414 |
|
|
char *old = *which_path;
|
415 |
|
|
int prefix = 0;
|
416 |
|
|
char **argv = NULL;
|
417 |
|
|
char *arg;
|
418 |
|
|
int argv_index = 0;
|
419 |
|
|
|
420 |
|
|
if (dirname == 0)
|
421 |
|
|
return;
|
422 |
|
|
|
423 |
|
|
if (parse_separators)
|
424 |
|
|
{
|
425 |
|
|
/* This will properly parse the space and tab separators
|
426 |
|
|
and any quotes that may exist. DIRNAME_SEPARATOR will
|
427 |
|
|
be dealt with later. */
|
428 |
|
|
argv = buildargv (dirname);
|
429 |
|
|
make_cleanup_freeargv (argv);
|
430 |
|
|
|
431 |
|
|
if (argv == NULL)
|
432 |
|
|
nomem (0);
|
433 |
|
|
|
434 |
|
|
arg = argv[0];
|
435 |
|
|
}
|
436 |
|
|
else
|
437 |
|
|
{
|
438 |
|
|
arg = xstrdup (dirname);
|
439 |
|
|
make_cleanup (xfree, arg);
|
440 |
|
|
}
|
441 |
|
|
|
442 |
|
|
do
|
443 |
|
|
{
|
444 |
|
|
char *name = arg;
|
445 |
|
|
char *p;
|
446 |
|
|
struct stat st;
|
447 |
|
|
|
448 |
|
|
{
|
449 |
|
|
char *separator = NULL;
|
450 |
|
|
|
451 |
|
|
/* Spaces and tabs will have been removed by buildargv().
|
452 |
|
|
The directories will there be split into a list but
|
453 |
|
|
each entry may still contain DIRNAME_SEPARATOR. */
|
454 |
|
|
if (parse_separators)
|
455 |
|
|
separator = strchr (name, DIRNAME_SEPARATOR);
|
456 |
|
|
|
457 |
|
|
if (separator == 0)
|
458 |
|
|
p = arg = name + strlen (name);
|
459 |
|
|
else
|
460 |
|
|
{
|
461 |
|
|
p = separator;
|
462 |
|
|
arg = p + 1;
|
463 |
|
|
while (*arg == DIRNAME_SEPARATOR)
|
464 |
|
|
++arg;
|
465 |
|
|
}
|
466 |
|
|
|
467 |
|
|
/* If there are no more directories in this argument then start
|
468 |
|
|
on the next argument next time round the loop (if any). */
|
469 |
|
|
if (*arg == '\0')
|
470 |
|
|
arg = parse_separators ? argv[++argv_index] : NULL;
|
471 |
|
|
}
|
472 |
|
|
|
473 |
|
|
/* name is the start of the directory.
|
474 |
|
|
p is the separator (or null) following the end. */
|
475 |
|
|
|
476 |
|
|
while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */
|
477 |
|
|
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
478 |
|
|
/* On MS-DOS and MS-Windows, h:\ is different from h: */
|
479 |
|
|
&& !(p == name + 3 && name[1] == ':') /* "d:/" */
|
480 |
|
|
#endif
|
481 |
|
|
&& IS_DIR_SEPARATOR (p[-1]))
|
482 |
|
|
/* Sigh. "foo/" => "foo" */
|
483 |
|
|
--p;
|
484 |
|
|
*p = '\0';
|
485 |
|
|
|
486 |
|
|
while (p > name && p[-1] == '.')
|
487 |
|
|
{
|
488 |
|
|
if (p - name == 1)
|
489 |
|
|
{
|
490 |
|
|
/* "." => getwd (). */
|
491 |
|
|
name = current_directory;
|
492 |
|
|
goto append;
|
493 |
|
|
}
|
494 |
|
|
else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2]))
|
495 |
|
|
{
|
496 |
|
|
if (p - name == 2)
|
497 |
|
|
{
|
498 |
|
|
/* "/." => "/". */
|
499 |
|
|
*--p = '\0';
|
500 |
|
|
goto append;
|
501 |
|
|
}
|
502 |
|
|
else
|
503 |
|
|
{
|
504 |
|
|
/* "...foo/." => "...foo". */
|
505 |
|
|
p -= 2;
|
506 |
|
|
*p = '\0';
|
507 |
|
|
continue;
|
508 |
|
|
}
|
509 |
|
|
}
|
510 |
|
|
else
|
511 |
|
|
break;
|
512 |
|
|
}
|
513 |
|
|
|
514 |
|
|
if (name[0] == '~')
|
515 |
|
|
name = tilde_expand (name);
|
516 |
|
|
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
517 |
|
|
else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */
|
518 |
|
|
name = concat (name, ".", (char *)NULL);
|
519 |
|
|
#endif
|
520 |
|
|
else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$')
|
521 |
|
|
name = concat (current_directory, SLASH_STRING, name, (char *)NULL);
|
522 |
|
|
else
|
523 |
|
|
name = savestring (name, p - name);
|
524 |
|
|
make_cleanup (xfree, name);
|
525 |
|
|
|
526 |
|
|
/* Unless it's a variable, check existence. */
|
527 |
|
|
if (name[0] != '$')
|
528 |
|
|
{
|
529 |
|
|
/* These are warnings, not errors, since we don't want a
|
530 |
|
|
non-existent directory in a .gdbinit file to stop processing
|
531 |
|
|
of the .gdbinit file.
|
532 |
|
|
|
533 |
|
|
Whether they get added to the path is more debatable. Current
|
534 |
|
|
answer is yes, in case the user wants to go make the directory
|
535 |
|
|
or whatever. If the directory continues to not exist/not be
|
536 |
|
|
a directory/etc, then having them in the path should be
|
537 |
|
|
harmless. */
|
538 |
|
|
if (stat (name, &st) < 0)
|
539 |
|
|
{
|
540 |
|
|
int save_errno = errno;
|
541 |
|
|
fprintf_unfiltered (gdb_stderr, "Warning: ");
|
542 |
|
|
print_sys_errmsg (name, save_errno);
|
543 |
|
|
}
|
544 |
|
|
else if ((st.st_mode & S_IFMT) != S_IFDIR)
|
545 |
|
|
warning (_("%s is not a directory."), name);
|
546 |
|
|
}
|
547 |
|
|
|
548 |
|
|
append:
|
549 |
|
|
{
|
550 |
|
|
unsigned int len = strlen (name);
|
551 |
|
|
|
552 |
|
|
p = *which_path;
|
553 |
|
|
while (1)
|
554 |
|
|
{
|
555 |
|
|
/* FIXME: strncmp loses in interesting ways on MS-DOS and
|
556 |
|
|
MS-Windows because of case-insensitivity and two different
|
557 |
|
|
but functionally identical slash characters. We need a
|
558 |
|
|
special filesystem-dependent file-name comparison function.
|
559 |
|
|
|
560 |
|
|
Actually, even on Unix I would use realpath() or its work-
|
561 |
|
|
alike before comparing. Then all the code above which
|
562 |
|
|
removes excess slashes and dots could simply go away. */
|
563 |
|
|
if (!strncmp (p, name, len)
|
564 |
|
|
&& (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR))
|
565 |
|
|
{
|
566 |
|
|
/* Found it in the search path, remove old copy */
|
567 |
|
|
if (p > *which_path)
|
568 |
|
|
p--; /* Back over leading separator */
|
569 |
|
|
if (prefix > p - *which_path)
|
570 |
|
|
goto skip_dup; /* Same dir twice in one cmd */
|
571 |
|
|
strcpy (p, &p[len + 1]); /* Copy from next \0 or : */
|
572 |
|
|
}
|
573 |
|
|
p = strchr (p, DIRNAME_SEPARATOR);
|
574 |
|
|
if (p != 0)
|
575 |
|
|
++p;
|
576 |
|
|
else
|
577 |
|
|
break;
|
578 |
|
|
}
|
579 |
|
|
if (p == 0)
|
580 |
|
|
{
|
581 |
|
|
char tinybuf[2];
|
582 |
|
|
|
583 |
|
|
tinybuf[0] = DIRNAME_SEPARATOR;
|
584 |
|
|
tinybuf[1] = '\0';
|
585 |
|
|
|
586 |
|
|
/* If we have already tacked on a name(s) in this command, be sure they stay
|
587 |
|
|
on the front as we tack on some more. */
|
588 |
|
|
if (prefix)
|
589 |
|
|
{
|
590 |
|
|
char *temp, c;
|
591 |
|
|
|
592 |
|
|
c = old[prefix];
|
593 |
|
|
old[prefix] = '\0';
|
594 |
|
|
temp = concat (old, tinybuf, name, (char *)NULL);
|
595 |
|
|
old[prefix] = c;
|
596 |
|
|
*which_path = concat (temp, "", &old[prefix], (char *)NULL);
|
597 |
|
|
prefix = strlen (temp);
|
598 |
|
|
xfree (temp);
|
599 |
|
|
}
|
600 |
|
|
else
|
601 |
|
|
{
|
602 |
|
|
*which_path = concat (name, (old[0] ? tinybuf : old),
|
603 |
|
|
old, (char *)NULL);
|
604 |
|
|
prefix = strlen (name);
|
605 |
|
|
}
|
606 |
|
|
xfree (old);
|
607 |
|
|
old = *which_path;
|
608 |
|
|
}
|
609 |
|
|
}
|
610 |
|
|
skip_dup:;
|
611 |
|
|
}
|
612 |
|
|
while (arg != NULL);
|
613 |
|
|
}
|
614 |
|
|
|
615 |
|
|
|
616 |
|
|
static void
|
617 |
|
|
source_info (char *ignore, int from_tty)
|
618 |
|
|
{
|
619 |
|
|
struct symtab *s = current_source_symtab;
|
620 |
|
|
|
621 |
|
|
if (!s)
|
622 |
|
|
{
|
623 |
|
|
printf_filtered (_("No current source file.\n"));
|
624 |
|
|
return;
|
625 |
|
|
}
|
626 |
|
|
printf_filtered (_("Current source file is %s\n"), s->filename);
|
627 |
|
|
if (s->dirname)
|
628 |
|
|
printf_filtered (_("Compilation directory is %s\n"), s->dirname);
|
629 |
|
|
if (s->fullname)
|
630 |
|
|
printf_filtered (_("Located in %s\n"), s->fullname);
|
631 |
|
|
if (s->nlines)
|
632 |
|
|
printf_filtered (_("Contains %d line%s.\n"), s->nlines,
|
633 |
|
|
s->nlines == 1 ? "" : "s");
|
634 |
|
|
|
635 |
|
|
printf_filtered (_("Source language is %s.\n"), language_str (s->language));
|
636 |
|
|
printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat);
|
637 |
|
|
printf_filtered (_("%s preprocessor macro info.\n"),
|
638 |
|
|
s->macro_table ? "Includes" : "Does not include");
|
639 |
|
|
}
|
640 |
|
|
|
641 |
|
|
|
642 |
|
|
/* Return True if the file NAME exists and is a regular file */
|
643 |
|
|
static int
|
644 |
|
|
is_regular_file (const char *name)
|
645 |
|
|
{
|
646 |
|
|
struct stat st;
|
647 |
|
|
const int status = stat (name, &st);
|
648 |
|
|
|
649 |
|
|
/* Stat should never fail except when the file does not exist.
|
650 |
|
|
If stat fails, analyze the source of error and return True
|
651 |
|
|
unless the file does not exist, to avoid returning false results
|
652 |
|
|
on obscure systems where stat does not work as expected.
|
653 |
|
|
*/
|
654 |
|
|
if (status != 0)
|
655 |
|
|
return (errno != ENOENT);
|
656 |
|
|
|
657 |
|
|
return S_ISREG (st.st_mode);
|
658 |
|
|
}
|
659 |
|
|
|
660 |
|
|
/* Open a file named STRING, searching path PATH (dir names sep by some char)
|
661 |
|
|
using mode MODE and protection bits PROT in the calls to open.
|
662 |
|
|
|
663 |
|
|
OPTS specifies the function behaviour in specific cases.
|
664 |
|
|
|
665 |
|
|
If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH.
|
666 |
|
|
(ie pretend the first element of PATH is "."). This also indicates
|
667 |
|
|
that a slash in STRING disables searching of the path (this is
|
668 |
|
|
so that "exec-file ./foo" or "symbol-file ./foo" insures that you
|
669 |
|
|
get that particular version of foo or an error message).
|
670 |
|
|
|
671 |
|
|
If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be
|
672 |
|
|
searched in path (we usually want this for source files but not for
|
673 |
|
|
executables).
|
674 |
|
|
|
675 |
|
|
If FILENAME_OPENED is non-null, set it to a newly allocated string naming
|
676 |
|
|
the actual file opened (this string will always start with a "/"). We
|
677 |
|
|
have to take special pains to avoid doubling the "/" between the directory
|
678 |
|
|
and the file, sigh! Emacs gets confuzzed by this when we print the
|
679 |
|
|
source file name!!!
|
680 |
|
|
|
681 |
|
|
If a file is found, return the descriptor.
|
682 |
|
|
Otherwise, return -1, with errno set for the last name we tried to open. */
|
683 |
|
|
|
684 |
|
|
/* >>>> This should only allow files of certain types,
|
685 |
|
|
>>>> eg executable, non-directory */
|
686 |
|
|
int
|
687 |
|
|
openp (const char *path, int opts, const char *string,
|
688 |
|
|
int mode, int prot,
|
689 |
|
|
char **filename_opened)
|
690 |
|
|
{
|
691 |
|
|
int fd;
|
692 |
|
|
char *filename;
|
693 |
|
|
const char *p;
|
694 |
|
|
const char *p1;
|
695 |
|
|
int len;
|
696 |
|
|
int alloclen;
|
697 |
|
|
|
698 |
|
|
if (!path)
|
699 |
|
|
path = ".";
|
700 |
|
|
|
701 |
|
|
mode |= O_BINARY;
|
702 |
|
|
|
703 |
|
|
if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string))
|
704 |
|
|
{
|
705 |
|
|
int i;
|
706 |
|
|
|
707 |
|
|
if (is_regular_file (string))
|
708 |
|
|
{
|
709 |
|
|
filename = alloca (strlen (string) + 1);
|
710 |
|
|
strcpy (filename, string);
|
711 |
|
|
fd = open (filename, mode, prot);
|
712 |
|
|
if (fd >= 0)
|
713 |
|
|
goto done;
|
714 |
|
|
}
|
715 |
|
|
else
|
716 |
|
|
{
|
717 |
|
|
filename = NULL;
|
718 |
|
|
fd = -1;
|
719 |
|
|
}
|
720 |
|
|
|
721 |
|
|
if (!(opts & OPF_SEARCH_IN_PATH))
|
722 |
|
|
for (i = 0; string[i]; i++)
|
723 |
|
|
if (IS_DIR_SEPARATOR (string[i]))
|
724 |
|
|
goto done;
|
725 |
|
|
}
|
726 |
|
|
|
727 |
|
|
/* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */
|
728 |
|
|
while (IS_DIR_SEPARATOR(string[0]))
|
729 |
|
|
string++;
|
730 |
|
|
|
731 |
|
|
/* ./foo => foo */
|
732 |
|
|
while (string[0] == '.' && IS_DIR_SEPARATOR (string[1]))
|
733 |
|
|
string += 2;
|
734 |
|
|
|
735 |
|
|
alloclen = strlen (path) + strlen (string) + 2;
|
736 |
|
|
filename = alloca (alloclen);
|
737 |
|
|
fd = -1;
|
738 |
|
|
for (p = path; p; p = p1 ? p1 + 1 : 0)
|
739 |
|
|
{
|
740 |
|
|
p1 = strchr (p, DIRNAME_SEPARATOR);
|
741 |
|
|
if (p1)
|
742 |
|
|
len = p1 - p;
|
743 |
|
|
else
|
744 |
|
|
len = strlen (p);
|
745 |
|
|
|
746 |
|
|
if (len == 4 && p[0] == '$' && p[1] == 'c'
|
747 |
|
|
&& p[2] == 'w' && p[3] == 'd')
|
748 |
|
|
{
|
749 |
|
|
/* Name is $cwd -- insert current directory name instead. */
|
750 |
|
|
int newlen;
|
751 |
|
|
|
752 |
|
|
/* First, realloc the filename buffer if too short. */
|
753 |
|
|
len = strlen (current_directory);
|
754 |
|
|
newlen = len + strlen (string) + 2;
|
755 |
|
|
if (newlen > alloclen)
|
756 |
|
|
{
|
757 |
|
|
alloclen = newlen;
|
758 |
|
|
filename = alloca (alloclen);
|
759 |
|
|
}
|
760 |
|
|
strcpy (filename, current_directory);
|
761 |
|
|
}
|
762 |
|
|
else
|
763 |
|
|
{
|
764 |
|
|
/* Normal file name in path -- just use it. */
|
765 |
|
|
strncpy (filename, p, len);
|
766 |
|
|
filename[len] = 0;
|
767 |
|
|
}
|
768 |
|
|
|
769 |
|
|
/* Remove trailing slashes */
|
770 |
|
|
while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1]))
|
771 |
|
|
filename[--len] = 0;
|
772 |
|
|
|
773 |
|
|
strcat (filename + len, SLASH_STRING);
|
774 |
|
|
strcat (filename, string);
|
775 |
|
|
|
776 |
|
|
if (is_regular_file (filename))
|
777 |
|
|
{
|
778 |
|
|
fd = open (filename, mode);
|
779 |
|
|
if (fd >= 0)
|
780 |
|
|
break;
|
781 |
|
|
}
|
782 |
|
|
}
|
783 |
|
|
|
784 |
|
|
done:
|
785 |
|
|
if (filename_opened)
|
786 |
|
|
{
|
787 |
|
|
/* If a file was opened, canonicalize its filename. Use xfullpath
|
788 |
|
|
rather than gdb_realpath to avoid resolving the basename part
|
789 |
|
|
of filenames when the associated file is a symbolic link. This
|
790 |
|
|
fixes a potential inconsistency between the filenames known to
|
791 |
|
|
GDB and the filenames it prints in the annotations. */
|
792 |
|
|
if (fd < 0)
|
793 |
|
|
*filename_opened = NULL;
|
794 |
|
|
else if (IS_ABSOLUTE_PATH (filename))
|
795 |
|
|
*filename_opened = xfullpath (filename);
|
796 |
|
|
else
|
797 |
|
|
{
|
798 |
|
|
/* Beware the // my son, the Emacs barfs, the botch that catch... */
|
799 |
|
|
|
800 |
|
|
char *f = concat (current_directory,
|
801 |
|
|
IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
|
802 |
|
|
? "" : SLASH_STRING,
|
803 |
|
|
filename, (char *)NULL);
|
804 |
|
|
*filename_opened = xfullpath (f);
|
805 |
|
|
xfree (f);
|
806 |
|
|
}
|
807 |
|
|
}
|
808 |
|
|
|
809 |
|
|
return fd;
|
810 |
|
|
}
|
811 |
|
|
|
812 |
|
|
|
813 |
|
|
/* This is essentially a convenience, for clients that want the behaviour
|
814 |
|
|
of openp, using source_path, but that really don't want the file to be
|
815 |
|
|
opened but want instead just to know what the full pathname is (as
|
816 |
|
|
qualified against source_path).
|
817 |
|
|
|
818 |
|
|
The current working directory is searched first.
|
819 |
|
|
|
820 |
|
|
If the file was found, this function returns 1, and FULL_PATHNAME is
|
821 |
|
|
set to the fully-qualified pathname.
|
822 |
|
|
|
823 |
|
|
Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */
|
824 |
|
|
int
|
825 |
|
|
source_full_path_of (char *filename, char **full_pathname)
|
826 |
|
|
{
|
827 |
|
|
int fd;
|
828 |
|
|
|
829 |
|
|
fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename,
|
830 |
|
|
O_RDONLY, 0, full_pathname);
|
831 |
|
|
if (fd < 0)
|
832 |
|
|
{
|
833 |
|
|
*full_pathname = NULL;
|
834 |
|
|
return 0;
|
835 |
|
|
}
|
836 |
|
|
|
837 |
|
|
close (fd);
|
838 |
|
|
return 1;
|
839 |
|
|
}
|
840 |
|
|
|
841 |
|
|
/* Return non-zero if RULE matches PATH, that is if the rule can be
|
842 |
|
|
applied to PATH. */
|
843 |
|
|
|
844 |
|
|
static int
|
845 |
|
|
substitute_path_rule_matches (const struct substitute_path_rule *rule,
|
846 |
|
|
const char *path)
|
847 |
|
|
{
|
848 |
|
|
const int from_len = strlen (rule->from);
|
849 |
|
|
const int path_len = strlen (path);
|
850 |
|
|
char *path_start;
|
851 |
|
|
|
852 |
|
|
if (path_len < from_len)
|
853 |
|
|
return 0;
|
854 |
|
|
|
855 |
|
|
/* The substitution rules are anchored at the start of the path,
|
856 |
|
|
so the path should start with rule->from. There is no filename
|
857 |
|
|
comparison routine, so we need to extract the first FROM_LEN
|
858 |
|
|
characters from PATH first and use that to do the comparison. */
|
859 |
|
|
|
860 |
|
|
path_start = alloca (from_len + 1);
|
861 |
|
|
strncpy (path_start, path, from_len);
|
862 |
|
|
path_start[from_len] = '\0';
|
863 |
|
|
|
864 |
|
|
if (FILENAME_CMP (path_start, rule->from) != 0)
|
865 |
|
|
return 0;
|
866 |
|
|
|
867 |
|
|
/* Make sure that the region in the path that matches the substitution
|
868 |
|
|
rule is immediately followed by a directory separator (or the end of
|
869 |
|
|
string character). */
|
870 |
|
|
|
871 |
|
|
if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len]))
|
872 |
|
|
return 0;
|
873 |
|
|
|
874 |
|
|
return 1;
|
875 |
|
|
}
|
876 |
|
|
|
877 |
|
|
/* Find the substitute-path rule that applies to PATH and return it.
|
878 |
|
|
Return NULL if no rule applies. */
|
879 |
|
|
|
880 |
|
|
static struct substitute_path_rule *
|
881 |
|
|
get_substitute_path_rule (const char *path)
|
882 |
|
|
{
|
883 |
|
|
struct substitute_path_rule *rule = substitute_path_rules;
|
884 |
|
|
|
885 |
|
|
while (rule != NULL && !substitute_path_rule_matches (rule, path))
|
886 |
|
|
rule = rule->next;
|
887 |
|
|
|
888 |
|
|
return rule;
|
889 |
|
|
}
|
890 |
|
|
|
891 |
|
|
/* If the user specified a source path substitution rule that applies
|
892 |
|
|
to PATH, then apply it and return the new path. This new path must
|
893 |
|
|
be deallocated afterwards.
|
894 |
|
|
|
895 |
|
|
Return NULL if no substitution rule was specified by the user,
|
896 |
|
|
or if no rule applied to the given PATH. */
|
897 |
|
|
|
898 |
|
|
static char *
|
899 |
|
|
rewrite_source_path (const char *path)
|
900 |
|
|
{
|
901 |
|
|
const struct substitute_path_rule *rule = get_substitute_path_rule (path);
|
902 |
|
|
char *new_path;
|
903 |
|
|
int from_len;
|
904 |
|
|
|
905 |
|
|
if (rule == NULL)
|
906 |
|
|
return NULL;
|
907 |
|
|
|
908 |
|
|
from_len = strlen (rule->from);
|
909 |
|
|
|
910 |
|
|
/* Compute the rewritten path and return it. */
|
911 |
|
|
|
912 |
|
|
new_path =
|
913 |
|
|
(char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len);
|
914 |
|
|
strcpy (new_path, rule->to);
|
915 |
|
|
strcat (new_path, path + from_len);
|
916 |
|
|
|
917 |
|
|
return new_path;
|
918 |
|
|
}
|
919 |
|
|
|
920 |
|
|
/* This function is capable of finding the absolute path to a
|
921 |
|
|
source file, and opening it, provided you give it an
|
922 |
|
|
OBJFILE and FILENAME. Both the DIRNAME and FULLNAME are only
|
923 |
|
|
added suggestions on where to find the file.
|
924 |
|
|
|
925 |
|
|
OBJFILE should be the objfile associated with a psymtab or symtab.
|
926 |
|
|
FILENAME should be the filename to open.
|
927 |
|
|
DIRNAME is the compilation directory of a particular source file.
|
928 |
|
|
Only some debug formats provide this info.
|
929 |
|
|
FULLNAME can be the last known absolute path to the file in question.
|
930 |
|
|
|
931 |
|
|
On Success
|
932 |
|
|
A valid file descriptor is returned. ( the return value is positive )
|
933 |
|
|
FULLNAME is set to the absolute path to the file just opened.
|
934 |
|
|
|
935 |
|
|
On Failure
|
936 |
|
|
An invalid file descriptor is returned. ( the return value is negative )
|
937 |
|
|
FULLNAME is set to NULL. */
|
938 |
|
|
int
|
939 |
|
|
find_and_open_source (struct objfile *objfile,
|
940 |
|
|
const char *filename,
|
941 |
|
|
const char *dirname,
|
942 |
|
|
char **fullname)
|
943 |
|
|
{
|
944 |
|
|
char *path = source_path;
|
945 |
|
|
const char *p;
|
946 |
|
|
int result;
|
947 |
|
|
|
948 |
|
|
/* Quick way out if we already know its full name */
|
949 |
|
|
|
950 |
|
|
if (*fullname)
|
951 |
|
|
{
|
952 |
|
|
/* The user may have requested that source paths be rewritten
|
953 |
|
|
according to substitution rules he provided. If a substitution
|
954 |
|
|
rule applies to this path, then apply it. */
|
955 |
|
|
char *rewritten_fullname = rewrite_source_path (*fullname);
|
956 |
|
|
|
957 |
|
|
if (rewritten_fullname != NULL)
|
958 |
|
|
{
|
959 |
|
|
xfree (*fullname);
|
960 |
|
|
*fullname = rewritten_fullname;
|
961 |
|
|
}
|
962 |
|
|
|
963 |
|
|
result = open (*fullname, OPEN_MODE);
|
964 |
|
|
if (result >= 0)
|
965 |
|
|
return result;
|
966 |
|
|
/* Didn't work -- free old one, try again. */
|
967 |
|
|
xfree (*fullname);
|
968 |
|
|
*fullname = NULL;
|
969 |
|
|
}
|
970 |
|
|
|
971 |
|
|
if (dirname != NULL)
|
972 |
|
|
{
|
973 |
|
|
/* If necessary, rewrite the compilation directory name according
|
974 |
|
|
to the source path substitution rules specified by the user. */
|
975 |
|
|
|
976 |
|
|
char *rewritten_dirname = rewrite_source_path (dirname);
|
977 |
|
|
|
978 |
|
|
if (rewritten_dirname != NULL)
|
979 |
|
|
{
|
980 |
|
|
make_cleanup (xfree, rewritten_dirname);
|
981 |
|
|
dirname = rewritten_dirname;
|
982 |
|
|
}
|
983 |
|
|
|
984 |
|
|
/* Replace a path entry of $cdir with the compilation directory name */
|
985 |
|
|
#define cdir_len 5
|
986 |
|
|
/* We cast strstr's result in case an ANSIhole has made it const,
|
987 |
|
|
which produces a "required warning" when assigned to a nonconst. */
|
988 |
|
|
p = (char *) strstr (source_path, "$cdir");
|
989 |
|
|
if (p && (p == path || p[-1] == DIRNAME_SEPARATOR)
|
990 |
|
|
&& (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0'))
|
991 |
|
|
{
|
992 |
|
|
int len;
|
993 |
|
|
|
994 |
|
|
path = (char *)
|
995 |
|
|
alloca (strlen (source_path) + 1 + strlen (dirname) + 1);
|
996 |
|
|
len = p - source_path;
|
997 |
|
|
strncpy (path, source_path, len); /* Before $cdir */
|
998 |
|
|
strcpy (path + len, dirname); /* new stuff */
|
999 |
|
|
strcat (path + len, source_path + len + cdir_len); /* After $cdir */
|
1000 |
|
|
}
|
1001 |
|
|
}
|
1002 |
|
|
|
1003 |
|
|
if (IS_ABSOLUTE_PATH (filename))
|
1004 |
|
|
{
|
1005 |
|
|
/* If filename is absolute path, try the source path
|
1006 |
|
|
substitution on it. */
|
1007 |
|
|
char *rewritten_filename = rewrite_source_path (filename);
|
1008 |
|
|
|
1009 |
|
|
if (rewritten_filename != NULL)
|
1010 |
|
|
{
|
1011 |
|
|
make_cleanup (xfree, rewritten_filename);
|
1012 |
|
|
filename = rewritten_filename;
|
1013 |
|
|
}
|
1014 |
|
|
}
|
1015 |
|
|
|
1016 |
|
|
result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, 0, fullname);
|
1017 |
|
|
if (result < 0)
|
1018 |
|
|
{
|
1019 |
|
|
/* Didn't work. Try using just the basename. */
|
1020 |
|
|
p = lbasename (filename);
|
1021 |
|
|
if (p != filename)
|
1022 |
|
|
result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, 0, fullname);
|
1023 |
|
|
}
|
1024 |
|
|
|
1025 |
|
|
if (result >= 0)
|
1026 |
|
|
{
|
1027 |
|
|
char *tmp_fullname;
|
1028 |
|
|
tmp_fullname = *fullname;
|
1029 |
|
|
*fullname = xstrdup (tmp_fullname);
|
1030 |
|
|
xfree (tmp_fullname);
|
1031 |
|
|
}
|
1032 |
|
|
return result;
|
1033 |
|
|
}
|
1034 |
|
|
|
1035 |
|
|
/* Open a source file given a symtab S. Returns a file descriptor or
|
1036 |
|
|
negative number for error.
|
1037 |
|
|
|
1038 |
|
|
This function is a convience function to find_and_open_source. */
|
1039 |
|
|
|
1040 |
|
|
int
|
1041 |
|
|
open_source_file (struct symtab *s)
|
1042 |
|
|
{
|
1043 |
|
|
if (!s)
|
1044 |
|
|
return -1;
|
1045 |
|
|
|
1046 |
|
|
return find_and_open_source (s->objfile, s->filename, s->dirname,
|
1047 |
|
|
&s->fullname);
|
1048 |
|
|
}
|
1049 |
|
|
|
1050 |
|
|
/* Finds the fullname that a symtab represents.
|
1051 |
|
|
|
1052 |
|
|
If this functions finds the fullname, it will save it in ps->fullname
|
1053 |
|
|
and it will also return the value.
|
1054 |
|
|
|
1055 |
|
|
If this function fails to find the file that this symtab represents,
|
1056 |
|
|
NULL will be returned and ps->fullname will be set to NULL. */
|
1057 |
|
|
char *
|
1058 |
|
|
symtab_to_fullname (struct symtab *s)
|
1059 |
|
|
{
|
1060 |
|
|
int r;
|
1061 |
|
|
|
1062 |
|
|
if (!s)
|
1063 |
|
|
return NULL;
|
1064 |
|
|
|
1065 |
|
|
/* Don't check s->fullname here, the file could have been
|
1066 |
|
|
deleted/moved/..., look for it again */
|
1067 |
|
|
r = find_and_open_source (s->objfile, s->filename, s->dirname,
|
1068 |
|
|
&s->fullname);
|
1069 |
|
|
|
1070 |
|
|
if (r)
|
1071 |
|
|
{
|
1072 |
|
|
close (r);
|
1073 |
|
|
return s->fullname;
|
1074 |
|
|
}
|
1075 |
|
|
|
1076 |
|
|
return NULL;
|
1077 |
|
|
}
|
1078 |
|
|
|
1079 |
|
|
/* Finds the fullname that a partial_symtab represents.
|
1080 |
|
|
|
1081 |
|
|
If this functions finds the fullname, it will save it in ps->fullname
|
1082 |
|
|
and it will also return the value.
|
1083 |
|
|
|
1084 |
|
|
If this function fails to find the file that this partial_symtab represents,
|
1085 |
|
|
NULL will be returned and ps->fullname will be set to NULL. */
|
1086 |
|
|
char *
|
1087 |
|
|
psymtab_to_fullname (struct partial_symtab *ps)
|
1088 |
|
|
{
|
1089 |
|
|
int r;
|
1090 |
|
|
|
1091 |
|
|
if (!ps)
|
1092 |
|
|
return NULL;
|
1093 |
|
|
|
1094 |
|
|
/* Don't check ps->fullname here, the file could have been
|
1095 |
|
|
deleted/moved/..., look for it again */
|
1096 |
|
|
r = find_and_open_source (ps->objfile, ps->filename, ps->dirname,
|
1097 |
|
|
&ps->fullname);
|
1098 |
|
|
|
1099 |
|
|
if (r)
|
1100 |
|
|
{
|
1101 |
|
|
close (r);
|
1102 |
|
|
return ps->fullname;
|
1103 |
|
|
}
|
1104 |
|
|
|
1105 |
|
|
return NULL;
|
1106 |
|
|
}
|
1107 |
|
|
|
1108 |
|
|
/* Create and initialize the table S->line_charpos that records
|
1109 |
|
|
the positions of the lines in the source file, which is assumed
|
1110 |
|
|
to be open on descriptor DESC.
|
1111 |
|
|
All set S->nlines to the number of such lines. */
|
1112 |
|
|
|
1113 |
|
|
void
|
1114 |
|
|
find_source_lines (struct symtab *s, int desc)
|
1115 |
|
|
{
|
1116 |
|
|
struct stat st;
|
1117 |
|
|
char *data, *p, *end;
|
1118 |
|
|
int nlines = 0;
|
1119 |
|
|
int lines_allocated = 1000;
|
1120 |
|
|
int *line_charpos;
|
1121 |
|
|
long mtime = 0;
|
1122 |
|
|
int size;
|
1123 |
|
|
|
1124 |
|
|
gdb_assert (s);
|
1125 |
|
|
line_charpos = (int *) xmalloc (lines_allocated * sizeof (int));
|
1126 |
|
|
if (fstat (desc, &st) < 0)
|
1127 |
|
|
perror_with_name (s->filename);
|
1128 |
|
|
|
1129 |
|
|
if (s->objfile && s->objfile->obfd)
|
1130 |
|
|
mtime = bfd_get_mtime (s->objfile->obfd);
|
1131 |
|
|
else if (exec_bfd)
|
1132 |
|
|
mtime = bfd_get_mtime (exec_bfd);
|
1133 |
|
|
|
1134 |
|
|
if (mtime && mtime < st.st_mtime)
|
1135 |
|
|
warning (_("Source file is more recent than executable."));
|
1136 |
|
|
|
1137 |
|
|
#ifdef LSEEK_NOT_LINEAR
|
1138 |
|
|
{
|
1139 |
|
|
char c;
|
1140 |
|
|
|
1141 |
|
|
/* Have to read it byte by byte to find out where the chars live */
|
1142 |
|
|
|
1143 |
|
|
line_charpos[0] = lseek (desc, 0, SEEK_CUR);
|
1144 |
|
|
nlines = 1;
|
1145 |
|
|
while (myread (desc, &c, 1) > 0)
|
1146 |
|
|
{
|
1147 |
|
|
if (c == '\n')
|
1148 |
|
|
{
|
1149 |
|
|
if (nlines == lines_allocated)
|
1150 |
|
|
{
|
1151 |
|
|
lines_allocated *= 2;
|
1152 |
|
|
line_charpos =
|
1153 |
|
|
(int *) xrealloc ((char *) line_charpos,
|
1154 |
|
|
sizeof (int) * lines_allocated);
|
1155 |
|
|
}
|
1156 |
|
|
line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR);
|
1157 |
|
|
}
|
1158 |
|
|
}
|
1159 |
|
|
}
|
1160 |
|
|
#else /* lseek linear. */
|
1161 |
|
|
{
|
1162 |
|
|
struct cleanup *old_cleanups;
|
1163 |
|
|
|
1164 |
|
|
/* st_size might be a large type, but we only support source files whose
|
1165 |
|
|
size fits in an int. */
|
1166 |
|
|
size = (int) st.st_size;
|
1167 |
|
|
|
1168 |
|
|
/* Use malloc, not alloca, because this may be pretty large, and we may
|
1169 |
|
|
run into various kinds of limits on stack size. */
|
1170 |
|
|
data = (char *) xmalloc (size);
|
1171 |
|
|
old_cleanups = make_cleanup (xfree, data);
|
1172 |
|
|
|
1173 |
|
|
/* Reassign `size' to result of read for systems where \r\n -> \n. */
|
1174 |
|
|
size = myread (desc, data, size);
|
1175 |
|
|
if (size < 0)
|
1176 |
|
|
perror_with_name (s->filename);
|
1177 |
|
|
end = data + size;
|
1178 |
|
|
p = data;
|
1179 |
|
|
line_charpos[0] = 0;
|
1180 |
|
|
nlines = 1;
|
1181 |
|
|
while (p != end)
|
1182 |
|
|
{
|
1183 |
|
|
if (*p++ == '\n'
|
1184 |
|
|
/* A newline at the end does not start a new line. */
|
1185 |
|
|
&& p != end)
|
1186 |
|
|
{
|
1187 |
|
|
if (nlines == lines_allocated)
|
1188 |
|
|
{
|
1189 |
|
|
lines_allocated *= 2;
|
1190 |
|
|
line_charpos =
|
1191 |
|
|
(int *) xrealloc ((char *) line_charpos,
|
1192 |
|
|
sizeof (int) * lines_allocated);
|
1193 |
|
|
}
|
1194 |
|
|
line_charpos[nlines++] = p - data;
|
1195 |
|
|
}
|
1196 |
|
|
}
|
1197 |
|
|
do_cleanups (old_cleanups);
|
1198 |
|
|
}
|
1199 |
|
|
#endif /* lseek linear. */
|
1200 |
|
|
s->nlines = nlines;
|
1201 |
|
|
s->line_charpos =
|
1202 |
|
|
(int *) xrealloc ((char *) line_charpos, nlines * sizeof (int));
|
1203 |
|
|
|
1204 |
|
|
}
|
1205 |
|
|
|
1206 |
|
|
/* Return the character position of a line LINE in symtab S.
|
1207 |
|
|
Return 0 if anything is invalid. */
|
1208 |
|
|
|
1209 |
|
|
#if 0 /* Currently unused */
|
1210 |
|
|
|
1211 |
|
|
int
|
1212 |
|
|
source_line_charpos (struct symtab *s, int line)
|
1213 |
|
|
{
|
1214 |
|
|
if (!s)
|
1215 |
|
|
return 0;
|
1216 |
|
|
if (!s->line_charpos || line <= 0)
|
1217 |
|
|
return 0;
|
1218 |
|
|
if (line > s->nlines)
|
1219 |
|
|
line = s->nlines;
|
1220 |
|
|
return s->line_charpos[line - 1];
|
1221 |
|
|
}
|
1222 |
|
|
|
1223 |
|
|
/* Return the line number of character position POS in symtab S. */
|
1224 |
|
|
|
1225 |
|
|
int
|
1226 |
|
|
source_charpos_line (struct symtab *s, int chr)
|
1227 |
|
|
{
|
1228 |
|
|
int line = 0;
|
1229 |
|
|
int *lnp;
|
1230 |
|
|
|
1231 |
|
|
if (s == 0 || s->line_charpos == 0)
|
1232 |
|
|
return 0;
|
1233 |
|
|
lnp = s->line_charpos;
|
1234 |
|
|
/* Files are usually short, so sequential search is Ok */
|
1235 |
|
|
while (line < s->nlines && *lnp <= chr)
|
1236 |
|
|
{
|
1237 |
|
|
line++;
|
1238 |
|
|
lnp++;
|
1239 |
|
|
}
|
1240 |
|
|
if (line >= s->nlines)
|
1241 |
|
|
line = s->nlines;
|
1242 |
|
|
return line;
|
1243 |
|
|
}
|
1244 |
|
|
|
1245 |
|
|
#endif /* 0 */
|
1246 |
|
|
|
1247 |
|
|
|
1248 |
|
|
/* Get full pathname and line number positions for a symtab.
|
1249 |
|
|
Return nonzero if line numbers may have changed.
|
1250 |
|
|
Set *FULLNAME to actual name of the file as found by `openp',
|
1251 |
|
|
or to 0 if the file is not found. */
|
1252 |
|
|
|
1253 |
|
|
static int
|
1254 |
|
|
get_filename_and_charpos (struct symtab *s, char **fullname)
|
1255 |
|
|
{
|
1256 |
|
|
int desc, linenums_changed = 0;
|
1257 |
|
|
|
1258 |
|
|
desc = open_source_file (s);
|
1259 |
|
|
if (desc < 0)
|
1260 |
|
|
{
|
1261 |
|
|
if (fullname)
|
1262 |
|
|
*fullname = NULL;
|
1263 |
|
|
return 0;
|
1264 |
|
|
}
|
1265 |
|
|
if (fullname)
|
1266 |
|
|
*fullname = s->fullname;
|
1267 |
|
|
if (s->line_charpos == 0)
|
1268 |
|
|
linenums_changed = 1;
|
1269 |
|
|
if (linenums_changed)
|
1270 |
|
|
find_source_lines (s, desc);
|
1271 |
|
|
close (desc);
|
1272 |
|
|
return linenums_changed;
|
1273 |
|
|
}
|
1274 |
|
|
|
1275 |
|
|
/* Print text describing the full name of the source file S
|
1276 |
|
|
and the line number LINE and its corresponding character position.
|
1277 |
|
|
The text starts with two Ctrl-z so that the Emacs-GDB interface
|
1278 |
|
|
can easily find it.
|
1279 |
|
|
|
1280 |
|
|
MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
|
1281 |
|
|
|
1282 |
|
|
Return 1 if successful, 0 if could not find the file. */
|
1283 |
|
|
|
1284 |
|
|
int
|
1285 |
|
|
identify_source_line (struct symtab *s, int line, int mid_statement,
|
1286 |
|
|
CORE_ADDR pc)
|
1287 |
|
|
{
|
1288 |
|
|
if (s->line_charpos == 0)
|
1289 |
|
|
get_filename_and_charpos (s, (char **) NULL);
|
1290 |
|
|
if (s->fullname == 0)
|
1291 |
|
|
return 0;
|
1292 |
|
|
if (line > s->nlines)
|
1293 |
|
|
/* Don't index off the end of the line_charpos array. */
|
1294 |
|
|
return 0;
|
1295 |
|
|
annotate_source (s->fullname, line, s->line_charpos[line - 1],
|
1296 |
|
|
mid_statement, pc);
|
1297 |
|
|
|
1298 |
|
|
current_source_line = line;
|
1299 |
|
|
first_line_listed = line;
|
1300 |
|
|
last_line_listed = line;
|
1301 |
|
|
current_source_symtab = s;
|
1302 |
|
|
return 1;
|
1303 |
|
|
}
|
1304 |
|
|
|
1305 |
|
|
|
1306 |
|
|
/* Print source lines from the file of symtab S,
|
1307 |
|
|
starting with line number LINE and stopping before line number STOPLINE. */
|
1308 |
|
|
|
1309 |
|
|
static void print_source_lines_base (struct symtab *s, int line, int stopline,
|
1310 |
|
|
int noerror);
|
1311 |
|
|
static void
|
1312 |
|
|
print_source_lines_base (struct symtab *s, int line, int stopline, int noerror)
|
1313 |
|
|
{
|
1314 |
|
|
int c;
|
1315 |
|
|
int desc;
|
1316 |
|
|
FILE *stream;
|
1317 |
|
|
int nlines = stopline - line;
|
1318 |
|
|
|
1319 |
|
|
/* Regardless of whether we can open the file, set current_source_symtab. */
|
1320 |
|
|
current_source_symtab = s;
|
1321 |
|
|
current_source_line = line;
|
1322 |
|
|
first_line_listed = line;
|
1323 |
|
|
|
1324 |
|
|
/* If printing of source lines is disabled, just print file and line number */
|
1325 |
|
|
if (ui_out_test_flags (uiout, ui_source_list))
|
1326 |
|
|
{
|
1327 |
|
|
/* Only prints "No such file or directory" once */
|
1328 |
|
|
if ((s != last_source_visited) || (!last_source_error))
|
1329 |
|
|
{
|
1330 |
|
|
last_source_visited = s;
|
1331 |
|
|
desc = open_source_file (s);
|
1332 |
|
|
}
|
1333 |
|
|
else
|
1334 |
|
|
{
|
1335 |
|
|
desc = last_source_error;
|
1336 |
|
|
noerror = 1;
|
1337 |
|
|
}
|
1338 |
|
|
}
|
1339 |
|
|
else
|
1340 |
|
|
{
|
1341 |
|
|
desc = -1;
|
1342 |
|
|
noerror = 1;
|
1343 |
|
|
}
|
1344 |
|
|
|
1345 |
|
|
if (desc < 0)
|
1346 |
|
|
{
|
1347 |
|
|
last_source_error = desc;
|
1348 |
|
|
|
1349 |
|
|
if (!noerror)
|
1350 |
|
|
{
|
1351 |
|
|
char *name = alloca (strlen (s->filename) + 100);
|
1352 |
|
|
sprintf (name, "%d\t%s", line, s->filename);
|
1353 |
|
|
print_sys_errmsg (name, errno);
|
1354 |
|
|
}
|
1355 |
|
|
else
|
1356 |
|
|
ui_out_field_int (uiout, "line", line);
|
1357 |
|
|
ui_out_text (uiout, "\tin ");
|
1358 |
|
|
ui_out_field_string (uiout, "file", s->filename);
|
1359 |
|
|
ui_out_text (uiout, "\n");
|
1360 |
|
|
|
1361 |
|
|
return;
|
1362 |
|
|
}
|
1363 |
|
|
|
1364 |
|
|
last_source_error = 0;
|
1365 |
|
|
|
1366 |
|
|
if (s->line_charpos == 0)
|
1367 |
|
|
find_source_lines (s, desc);
|
1368 |
|
|
|
1369 |
|
|
if (line < 1 || line > s->nlines)
|
1370 |
|
|
{
|
1371 |
|
|
close (desc);
|
1372 |
|
|
error (_("Line number %d out of range; %s has %d lines."),
|
1373 |
|
|
line, s->filename, s->nlines);
|
1374 |
|
|
}
|
1375 |
|
|
|
1376 |
|
|
if (lseek (desc, s->line_charpos[line - 1], 0) < 0)
|
1377 |
|
|
{
|
1378 |
|
|
close (desc);
|
1379 |
|
|
perror_with_name (s->filename);
|
1380 |
|
|
}
|
1381 |
|
|
|
1382 |
|
|
stream = fdopen (desc, FDOPEN_MODE);
|
1383 |
|
|
clearerr (stream);
|
1384 |
|
|
|
1385 |
|
|
while (nlines-- > 0)
|
1386 |
|
|
{
|
1387 |
|
|
char buf[20];
|
1388 |
|
|
|
1389 |
|
|
c = fgetc (stream);
|
1390 |
|
|
if (c == EOF)
|
1391 |
|
|
break;
|
1392 |
|
|
last_line_listed = current_source_line;
|
1393 |
|
|
sprintf (buf, "%d\t", current_source_line++);
|
1394 |
|
|
ui_out_text (uiout, buf);
|
1395 |
|
|
do
|
1396 |
|
|
{
|
1397 |
|
|
if (c < 040 && c != '\t' && c != '\n' && c != '\r')
|
1398 |
|
|
{
|
1399 |
|
|
sprintf (buf, "^%c", c + 0100);
|
1400 |
|
|
ui_out_text (uiout, buf);
|
1401 |
|
|
}
|
1402 |
|
|
else if (c == 0177)
|
1403 |
|
|
ui_out_text (uiout, "^?");
|
1404 |
|
|
else if (c == '\r')
|
1405 |
|
|
{
|
1406 |
|
|
/* Skip a \r character, but only before a \n. */
|
1407 |
|
|
int c1 = fgetc (stream);
|
1408 |
|
|
|
1409 |
|
|
if (c1 != '\n')
|
1410 |
|
|
printf_filtered ("^%c", c + 0100);
|
1411 |
|
|
if (c1 != EOF)
|
1412 |
|
|
ungetc (c1, stream);
|
1413 |
|
|
}
|
1414 |
|
|
else
|
1415 |
|
|
{
|
1416 |
|
|
sprintf (buf, "%c", c);
|
1417 |
|
|
ui_out_text (uiout, buf);
|
1418 |
|
|
}
|
1419 |
|
|
}
|
1420 |
|
|
while (c != '\n' && (c = fgetc (stream)) >= 0);
|
1421 |
|
|
}
|
1422 |
|
|
|
1423 |
|
|
fclose (stream);
|
1424 |
|
|
}
|
1425 |
|
|
|
1426 |
|
|
/* Show source lines from the file of symtab S, starting with line
|
1427 |
|
|
number LINE and stopping before line number STOPLINE. If this is the
|
1428 |
|
|
not the command line version, then the source is shown in the source
|
1429 |
|
|
window otherwise it is simply printed */
|
1430 |
|
|
|
1431 |
|
|
void
|
1432 |
|
|
print_source_lines (struct symtab *s, int line, int stopline, int noerror)
|
1433 |
|
|
{
|
1434 |
|
|
print_source_lines_base (s, line, stopline, noerror);
|
1435 |
|
|
}
|
1436 |
|
|
|
1437 |
|
|
/* Print info on range of pc's in a specified line. */
|
1438 |
|
|
|
1439 |
|
|
static void
|
1440 |
|
|
line_info (char *arg, int from_tty)
|
1441 |
|
|
{
|
1442 |
|
|
struct symtabs_and_lines sals;
|
1443 |
|
|
struct symtab_and_line sal;
|
1444 |
|
|
CORE_ADDR start_pc, end_pc;
|
1445 |
|
|
int i;
|
1446 |
|
|
|
1447 |
|
|
init_sal (&sal); /* initialize to zeroes */
|
1448 |
|
|
|
1449 |
|
|
if (arg == 0)
|
1450 |
|
|
{
|
1451 |
|
|
sal.symtab = current_source_symtab;
|
1452 |
|
|
sal.line = last_line_listed;
|
1453 |
|
|
sals.nelts = 1;
|
1454 |
|
|
sals.sals = (struct symtab_and_line *)
|
1455 |
|
|
xmalloc (sizeof (struct symtab_and_line));
|
1456 |
|
|
sals.sals[0] = sal;
|
1457 |
|
|
}
|
1458 |
|
|
else
|
1459 |
|
|
{
|
1460 |
|
|
sals = decode_line_spec_1 (arg, 0);
|
1461 |
|
|
|
1462 |
|
|
dont_repeat ();
|
1463 |
|
|
}
|
1464 |
|
|
|
1465 |
|
|
/* C++ More than one line may have been specified, as when the user
|
1466 |
|
|
specifies an overloaded function name. Print info on them all. */
|
1467 |
|
|
for (i = 0; i < sals.nelts; i++)
|
1468 |
|
|
{
|
1469 |
|
|
sal = sals.sals[i];
|
1470 |
|
|
|
1471 |
|
|
if (sal.symtab == 0)
|
1472 |
|
|
{
|
1473 |
|
|
printf_filtered (_("No line number information available"));
|
1474 |
|
|
if (sal.pc != 0)
|
1475 |
|
|
{
|
1476 |
|
|
/* This is useful for "info line *0x7f34". If we can't tell the
|
1477 |
|
|
user about a source line, at least let them have the symbolic
|
1478 |
|
|
address. */
|
1479 |
|
|
printf_filtered (" for address ");
|
1480 |
|
|
wrap_here (" ");
|
1481 |
|
|
print_address (sal.pc, gdb_stdout);
|
1482 |
|
|
}
|
1483 |
|
|
else
|
1484 |
|
|
printf_filtered (".");
|
1485 |
|
|
printf_filtered ("\n");
|
1486 |
|
|
}
|
1487 |
|
|
else if (sal.line > 0
|
1488 |
|
|
&& find_line_pc_range (sal, &start_pc, &end_pc))
|
1489 |
|
|
{
|
1490 |
|
|
if (start_pc == end_pc)
|
1491 |
|
|
{
|
1492 |
|
|
printf_filtered ("Line %d of \"%s\"",
|
1493 |
|
|
sal.line, sal.symtab->filename);
|
1494 |
|
|
wrap_here (" ");
|
1495 |
|
|
printf_filtered (" is at address ");
|
1496 |
|
|
print_address (start_pc, gdb_stdout);
|
1497 |
|
|
wrap_here (" ");
|
1498 |
|
|
printf_filtered (" but contains no code.\n");
|
1499 |
|
|
}
|
1500 |
|
|
else
|
1501 |
|
|
{
|
1502 |
|
|
printf_filtered ("Line %d of \"%s\"",
|
1503 |
|
|
sal.line, sal.symtab->filename);
|
1504 |
|
|
wrap_here (" ");
|
1505 |
|
|
printf_filtered (" starts at address ");
|
1506 |
|
|
print_address (start_pc, gdb_stdout);
|
1507 |
|
|
wrap_here (" ");
|
1508 |
|
|
printf_filtered (" and ends at ");
|
1509 |
|
|
print_address (end_pc, gdb_stdout);
|
1510 |
|
|
printf_filtered (".\n");
|
1511 |
|
|
}
|
1512 |
|
|
|
1513 |
|
|
/* x/i should display this line's code. */
|
1514 |
|
|
set_next_address (start_pc);
|
1515 |
|
|
|
1516 |
|
|
/* Repeating "info line" should do the following line. */
|
1517 |
|
|
last_line_listed = sal.line + 1;
|
1518 |
|
|
|
1519 |
|
|
/* If this is the only line, show the source code. If it could
|
1520 |
|
|
not find the file, don't do anything special. */
|
1521 |
|
|
if (annotation_level && sals.nelts == 1)
|
1522 |
|
|
identify_source_line (sal.symtab, sal.line, 0, start_pc);
|
1523 |
|
|
}
|
1524 |
|
|
else
|
1525 |
|
|
/* Is there any case in which we get here, and have an address
|
1526 |
|
|
which the user would want to see? If we have debugging symbols
|
1527 |
|
|
and no line numbers? */
|
1528 |
|
|
printf_filtered (_("Line number %d is out of range for \"%s\".\n"),
|
1529 |
|
|
sal.line, sal.symtab->filename);
|
1530 |
|
|
}
|
1531 |
|
|
xfree (sals.sals);
|
1532 |
|
|
}
|
1533 |
|
|
|
1534 |
|
|
/* Commands to search the source file for a regexp. */
|
1535 |
|
|
|
1536 |
|
|
static void
|
1537 |
|
|
forward_search_command (char *regex, int from_tty)
|
1538 |
|
|
{
|
1539 |
|
|
int c;
|
1540 |
|
|
int desc;
|
1541 |
|
|
FILE *stream;
|
1542 |
|
|
int line;
|
1543 |
|
|
char *msg;
|
1544 |
|
|
|
1545 |
|
|
line = last_line_listed + 1;
|
1546 |
|
|
|
1547 |
|
|
msg = (char *) re_comp (regex);
|
1548 |
|
|
if (msg)
|
1549 |
|
|
error (("%s"), msg);
|
1550 |
|
|
|
1551 |
|
|
if (current_source_symtab == 0)
|
1552 |
|
|
select_source_symtab (0);
|
1553 |
|
|
|
1554 |
|
|
desc = open_source_file (current_source_symtab);
|
1555 |
|
|
if (desc < 0)
|
1556 |
|
|
perror_with_name (current_source_symtab->filename);
|
1557 |
|
|
|
1558 |
|
|
if (current_source_symtab->line_charpos == 0)
|
1559 |
|
|
find_source_lines (current_source_symtab, desc);
|
1560 |
|
|
|
1561 |
|
|
if (line < 1 || line > current_source_symtab->nlines)
|
1562 |
|
|
{
|
1563 |
|
|
close (desc);
|
1564 |
|
|
error (_("Expression not found"));
|
1565 |
|
|
}
|
1566 |
|
|
|
1567 |
|
|
if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
|
1568 |
|
|
{
|
1569 |
|
|
close (desc);
|
1570 |
|
|
perror_with_name (current_source_symtab->filename);
|
1571 |
|
|
}
|
1572 |
|
|
|
1573 |
|
|
stream = fdopen (desc, FDOPEN_MODE);
|
1574 |
|
|
clearerr (stream);
|
1575 |
|
|
while (1)
|
1576 |
|
|
{
|
1577 |
|
|
static char *buf = NULL;
|
1578 |
|
|
char *p;
|
1579 |
|
|
int cursize, newsize;
|
1580 |
|
|
|
1581 |
|
|
cursize = 256;
|
1582 |
|
|
buf = xmalloc (cursize);
|
1583 |
|
|
p = buf;
|
1584 |
|
|
|
1585 |
|
|
c = getc (stream);
|
1586 |
|
|
if (c == EOF)
|
1587 |
|
|
break;
|
1588 |
|
|
do
|
1589 |
|
|
{
|
1590 |
|
|
*p++ = c;
|
1591 |
|
|
if (p - buf == cursize)
|
1592 |
|
|
{
|
1593 |
|
|
newsize = cursize + cursize / 2;
|
1594 |
|
|
buf = xrealloc (buf, newsize);
|
1595 |
|
|
p = buf + cursize;
|
1596 |
|
|
cursize = newsize;
|
1597 |
|
|
}
|
1598 |
|
|
}
|
1599 |
|
|
while (c != '\n' && (c = getc (stream)) >= 0);
|
1600 |
|
|
|
1601 |
|
|
/* Remove the \r, if any, at the end of the line, otherwise
|
1602 |
|
|
regular expressions that end with $ or \n won't work. */
|
1603 |
|
|
if (p - buf > 1 && p[-2] == '\r')
|
1604 |
|
|
{
|
1605 |
|
|
p--;
|
1606 |
|
|
p[-1] = '\n';
|
1607 |
|
|
}
|
1608 |
|
|
|
1609 |
|
|
/* we now have a source line in buf, null terminate and match */
|
1610 |
|
|
*p = 0;
|
1611 |
|
|
if (re_exec (buf) > 0)
|
1612 |
|
|
{
|
1613 |
|
|
/* Match! */
|
1614 |
|
|
fclose (stream);
|
1615 |
|
|
print_source_lines (current_source_symtab, line, line + 1, 0);
|
1616 |
|
|
set_internalvar (lookup_internalvar ("_"),
|
1617 |
|
|
value_from_longest (builtin_type_int,
|
1618 |
|
|
(LONGEST) line));
|
1619 |
|
|
current_source_line = max (line - lines_to_list / 2, 1);
|
1620 |
|
|
return;
|
1621 |
|
|
}
|
1622 |
|
|
line++;
|
1623 |
|
|
}
|
1624 |
|
|
|
1625 |
|
|
printf_filtered (_("Expression not found\n"));
|
1626 |
|
|
fclose (stream);
|
1627 |
|
|
}
|
1628 |
|
|
|
1629 |
|
|
static void
|
1630 |
|
|
reverse_search_command (char *regex, int from_tty)
|
1631 |
|
|
{
|
1632 |
|
|
int c;
|
1633 |
|
|
int desc;
|
1634 |
|
|
FILE *stream;
|
1635 |
|
|
int line;
|
1636 |
|
|
char *msg;
|
1637 |
|
|
|
1638 |
|
|
line = last_line_listed - 1;
|
1639 |
|
|
|
1640 |
|
|
msg = (char *) re_comp (regex);
|
1641 |
|
|
if (msg)
|
1642 |
|
|
error (("%s"), msg);
|
1643 |
|
|
|
1644 |
|
|
if (current_source_symtab == 0)
|
1645 |
|
|
select_source_symtab (0);
|
1646 |
|
|
|
1647 |
|
|
desc = open_source_file (current_source_symtab);
|
1648 |
|
|
if (desc < 0)
|
1649 |
|
|
perror_with_name (current_source_symtab->filename);
|
1650 |
|
|
|
1651 |
|
|
if (current_source_symtab->line_charpos == 0)
|
1652 |
|
|
find_source_lines (current_source_symtab, desc);
|
1653 |
|
|
|
1654 |
|
|
if (line < 1 || line > current_source_symtab->nlines)
|
1655 |
|
|
{
|
1656 |
|
|
close (desc);
|
1657 |
|
|
error (_("Expression not found"));
|
1658 |
|
|
}
|
1659 |
|
|
|
1660 |
|
|
if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
|
1661 |
|
|
{
|
1662 |
|
|
close (desc);
|
1663 |
|
|
perror_with_name (current_source_symtab->filename);
|
1664 |
|
|
}
|
1665 |
|
|
|
1666 |
|
|
stream = fdopen (desc, FDOPEN_MODE);
|
1667 |
|
|
clearerr (stream);
|
1668 |
|
|
while (line > 1)
|
1669 |
|
|
{
|
1670 |
|
|
/* FIXME!!! We walk right off the end of buf if we get a long line!!! */
|
1671 |
|
|
char buf[4096]; /* Should be reasonable??? */
|
1672 |
|
|
char *p = buf;
|
1673 |
|
|
|
1674 |
|
|
c = getc (stream);
|
1675 |
|
|
if (c == EOF)
|
1676 |
|
|
break;
|
1677 |
|
|
do
|
1678 |
|
|
{
|
1679 |
|
|
*p++ = c;
|
1680 |
|
|
}
|
1681 |
|
|
while (c != '\n' && (c = getc (stream)) >= 0);
|
1682 |
|
|
|
1683 |
|
|
/* Remove the \r, if any, at the end of the line, otherwise
|
1684 |
|
|
regular expressions that end with $ or \n won't work. */
|
1685 |
|
|
if (p - buf > 1 && p[-2] == '\r')
|
1686 |
|
|
{
|
1687 |
|
|
p--;
|
1688 |
|
|
p[-1] = '\n';
|
1689 |
|
|
}
|
1690 |
|
|
|
1691 |
|
|
/* We now have a source line in buf; null terminate and match. */
|
1692 |
|
|
*p = 0;
|
1693 |
|
|
if (re_exec (buf) > 0)
|
1694 |
|
|
{
|
1695 |
|
|
/* Match! */
|
1696 |
|
|
fclose (stream);
|
1697 |
|
|
print_source_lines (current_source_symtab, line, line + 1, 0);
|
1698 |
|
|
set_internalvar (lookup_internalvar ("_"),
|
1699 |
|
|
value_from_longest (builtin_type_int,
|
1700 |
|
|
(LONGEST) line));
|
1701 |
|
|
current_source_line = max (line - lines_to_list / 2, 1);
|
1702 |
|
|
return;
|
1703 |
|
|
}
|
1704 |
|
|
line--;
|
1705 |
|
|
if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0)
|
1706 |
|
|
{
|
1707 |
|
|
fclose (stream);
|
1708 |
|
|
perror_with_name (current_source_symtab->filename);
|
1709 |
|
|
}
|
1710 |
|
|
}
|
1711 |
|
|
|
1712 |
|
|
printf_filtered (_("Expression not found\n"));
|
1713 |
|
|
fclose (stream);
|
1714 |
|
|
return;
|
1715 |
|
|
}
|
1716 |
|
|
|
1717 |
|
|
/* If the last character of PATH is a directory separator, then strip it. */
|
1718 |
|
|
|
1719 |
|
|
static void
|
1720 |
|
|
strip_trailing_directory_separator (char *path)
|
1721 |
|
|
{
|
1722 |
|
|
const int last = strlen (path) - 1;
|
1723 |
|
|
|
1724 |
|
|
if (last < 0)
|
1725 |
|
|
return; /* No stripping is needed if PATH is the empty string. */
|
1726 |
|
|
|
1727 |
|
|
if (IS_DIR_SEPARATOR (path[last]))
|
1728 |
|
|
path[last] = '\0';
|
1729 |
|
|
}
|
1730 |
|
|
|
1731 |
|
|
/* Return the path substitution rule that matches FROM.
|
1732 |
|
|
Return NULL if no rule matches. */
|
1733 |
|
|
|
1734 |
|
|
static struct substitute_path_rule *
|
1735 |
|
|
find_substitute_path_rule (const char *from)
|
1736 |
|
|
{
|
1737 |
|
|
struct substitute_path_rule *rule = substitute_path_rules;
|
1738 |
|
|
|
1739 |
|
|
while (rule != NULL)
|
1740 |
|
|
{
|
1741 |
|
|
if (FILENAME_CMP (rule->from, from) == 0)
|
1742 |
|
|
return rule;
|
1743 |
|
|
rule = rule->next;
|
1744 |
|
|
}
|
1745 |
|
|
|
1746 |
|
|
return NULL;
|
1747 |
|
|
}
|
1748 |
|
|
|
1749 |
|
|
/* Add a new substitute-path rule at the end of the current list of rules.
|
1750 |
|
|
The new rule will replace FROM into TO. */
|
1751 |
|
|
|
1752 |
|
|
static void
|
1753 |
|
|
add_substitute_path_rule (char *from, char *to)
|
1754 |
|
|
{
|
1755 |
|
|
struct substitute_path_rule *rule;
|
1756 |
|
|
struct substitute_path_rule *new_rule;
|
1757 |
|
|
|
1758 |
|
|
new_rule = xmalloc (sizeof (struct substitute_path_rule));
|
1759 |
|
|
new_rule->from = xstrdup (from);
|
1760 |
|
|
new_rule->to = xstrdup (to);
|
1761 |
|
|
new_rule->next = NULL;
|
1762 |
|
|
|
1763 |
|
|
/* If the list of rules are empty, then insert the new rule
|
1764 |
|
|
at the head of the list. */
|
1765 |
|
|
|
1766 |
|
|
if (substitute_path_rules == NULL)
|
1767 |
|
|
{
|
1768 |
|
|
substitute_path_rules = new_rule;
|
1769 |
|
|
return;
|
1770 |
|
|
}
|
1771 |
|
|
|
1772 |
|
|
/* Otherwise, skip to the last rule in our list and then append
|
1773 |
|
|
the new rule. */
|
1774 |
|
|
|
1775 |
|
|
rule = substitute_path_rules;
|
1776 |
|
|
while (rule->next != NULL)
|
1777 |
|
|
rule = rule->next;
|
1778 |
|
|
|
1779 |
|
|
rule->next = new_rule;
|
1780 |
|
|
}
|
1781 |
|
|
|
1782 |
|
|
/* Remove the given source path substitution rule from the current list
|
1783 |
|
|
of rules. The memory allocated for that rule is also deallocated. */
|
1784 |
|
|
|
1785 |
|
|
static void
|
1786 |
|
|
delete_substitute_path_rule (struct substitute_path_rule *rule)
|
1787 |
|
|
{
|
1788 |
|
|
if (rule == substitute_path_rules)
|
1789 |
|
|
substitute_path_rules = rule->next;
|
1790 |
|
|
else
|
1791 |
|
|
{
|
1792 |
|
|
struct substitute_path_rule *prev = substitute_path_rules;
|
1793 |
|
|
|
1794 |
|
|
while (prev != NULL && prev->next != rule)
|
1795 |
|
|
prev = prev->next;
|
1796 |
|
|
|
1797 |
|
|
gdb_assert (prev != NULL);
|
1798 |
|
|
|
1799 |
|
|
prev->next = rule->next;
|
1800 |
|
|
}
|
1801 |
|
|
|
1802 |
|
|
xfree (rule->from);
|
1803 |
|
|
xfree (rule->to);
|
1804 |
|
|
xfree (rule);
|
1805 |
|
|
}
|
1806 |
|
|
|
1807 |
|
|
/* Implement the "show substitute-path" command. */
|
1808 |
|
|
|
1809 |
|
|
static void
|
1810 |
|
|
show_substitute_path_command (char *args, int from_tty)
|
1811 |
|
|
{
|
1812 |
|
|
struct substitute_path_rule *rule = substitute_path_rules;
|
1813 |
|
|
char **argv;
|
1814 |
|
|
char *from = NULL;
|
1815 |
|
|
|
1816 |
|
|
argv = buildargv (args);
|
1817 |
|
|
make_cleanup_freeargv (argv);
|
1818 |
|
|
|
1819 |
|
|
/* We expect zero or one argument. */
|
1820 |
|
|
|
1821 |
|
|
if (argv != NULL && argv[0] != NULL && argv[1] != NULL)
|
1822 |
|
|
error (_("Too many arguments in command"));
|
1823 |
|
|
|
1824 |
|
|
if (argv != NULL && argv[0] != NULL)
|
1825 |
|
|
from = argv[0];
|
1826 |
|
|
|
1827 |
|
|
/* Print the substitution rules. */
|
1828 |
|
|
|
1829 |
|
|
if (from != NULL)
|
1830 |
|
|
printf_filtered
|
1831 |
|
|
(_("Source path substitution rule matching `%s':\n"), from);
|
1832 |
|
|
else
|
1833 |
|
|
printf_filtered (_("List of all source path substitution rules:\n"));
|
1834 |
|
|
|
1835 |
|
|
while (rule != NULL)
|
1836 |
|
|
{
|
1837 |
|
|
if (from == NULL || FILENAME_CMP (rule->from, from) == 0)
|
1838 |
|
|
printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to);
|
1839 |
|
|
rule = rule->next;
|
1840 |
|
|
}
|
1841 |
|
|
}
|
1842 |
|
|
|
1843 |
|
|
/* Implement the "unset substitute-path" command. */
|
1844 |
|
|
|
1845 |
|
|
static void
|
1846 |
|
|
unset_substitute_path_command (char *args, int from_tty)
|
1847 |
|
|
{
|
1848 |
|
|
struct substitute_path_rule *rule = substitute_path_rules;
|
1849 |
|
|
char **argv = buildargv (args);
|
1850 |
|
|
char *from = NULL;
|
1851 |
|
|
int rule_found = 0;
|
1852 |
|
|
|
1853 |
|
|
/* This function takes either 0 or 1 argument. */
|
1854 |
|
|
|
1855 |
|
|
make_cleanup_freeargv (argv);
|
1856 |
|
|
if (argv != NULL && argv[0] != NULL && argv[1] != NULL)
|
1857 |
|
|
error (_("Incorrect usage, too many arguments in command"));
|
1858 |
|
|
|
1859 |
|
|
if (argv != NULL && argv[0] != NULL)
|
1860 |
|
|
from = argv[0];
|
1861 |
|
|
|
1862 |
|
|
/* If the user asked for all the rules to be deleted, ask him
|
1863 |
|
|
to confirm and give him a chance to abort before the action
|
1864 |
|
|
is performed. */
|
1865 |
|
|
|
1866 |
|
|
if (from == NULL
|
1867 |
|
|
&& !query (_("Delete all source path substitution rules? ")))
|
1868 |
|
|
error (_("Canceled"));
|
1869 |
|
|
|
1870 |
|
|
/* Delete the rule matching the argument. No argument means that
|
1871 |
|
|
all rules should be deleted. */
|
1872 |
|
|
|
1873 |
|
|
while (rule != NULL)
|
1874 |
|
|
{
|
1875 |
|
|
struct substitute_path_rule *next = rule->next;
|
1876 |
|
|
|
1877 |
|
|
if (from == NULL || FILENAME_CMP (from, rule->from) == 0)
|
1878 |
|
|
{
|
1879 |
|
|
delete_substitute_path_rule (rule);
|
1880 |
|
|
rule_found = 1;
|
1881 |
|
|
}
|
1882 |
|
|
|
1883 |
|
|
rule = next;
|
1884 |
|
|
}
|
1885 |
|
|
|
1886 |
|
|
/* If the user asked for a specific rule to be deleted but
|
1887 |
|
|
we could not find it, then report an error. */
|
1888 |
|
|
|
1889 |
|
|
if (from != NULL && !rule_found)
|
1890 |
|
|
error (_("No substitution rule defined for `%s'"), from);
|
1891 |
|
|
}
|
1892 |
|
|
|
1893 |
|
|
/* Add a new source path substitution rule. */
|
1894 |
|
|
|
1895 |
|
|
static void
|
1896 |
|
|
set_substitute_path_command (char *args, int from_tty)
|
1897 |
|
|
{
|
1898 |
|
|
char *from_path, *to_path;
|
1899 |
|
|
char **argv;
|
1900 |
|
|
struct substitute_path_rule *rule;
|
1901 |
|
|
|
1902 |
|
|
argv = buildargv (args);
|
1903 |
|
|
make_cleanup_freeargv (argv);
|
1904 |
|
|
|
1905 |
|
|
if (argv == NULL || argv[0] == NULL || argv [1] == NULL)
|
1906 |
|
|
error (_("Incorrect usage, too few arguments in command"));
|
1907 |
|
|
|
1908 |
|
|
if (argv[2] != NULL)
|
1909 |
|
|
error (_("Incorrect usage, too many arguments in command"));
|
1910 |
|
|
|
1911 |
|
|
if (*(argv[0]) == '\0')
|
1912 |
|
|
error (_("First argument must be at least one character long"));
|
1913 |
|
|
|
1914 |
|
|
/* Strip any trailing directory separator character in either FROM
|
1915 |
|
|
or TO. The substitution rule already implicitly contains them. */
|
1916 |
|
|
strip_trailing_directory_separator (argv[0]);
|
1917 |
|
|
strip_trailing_directory_separator (argv[1]);
|
1918 |
|
|
|
1919 |
|
|
/* If a rule with the same "from" was previously defined, then
|
1920 |
|
|
delete it. This new rule replaces it. */
|
1921 |
|
|
|
1922 |
|
|
rule = find_substitute_path_rule (argv[0]);
|
1923 |
|
|
if (rule != NULL)
|
1924 |
|
|
delete_substitute_path_rule (rule);
|
1925 |
|
|
|
1926 |
|
|
/* Insert the new substitution rule. */
|
1927 |
|
|
|
1928 |
|
|
add_substitute_path_rule (argv[0], argv[1]);
|
1929 |
|
|
}
|
1930 |
|
|
|
1931 |
|
|
|
1932 |
|
|
void
|
1933 |
|
|
_initialize_source (void)
|
1934 |
|
|
{
|
1935 |
|
|
struct cmd_list_element *c;
|
1936 |
|
|
current_source_symtab = 0;
|
1937 |
|
|
init_source_path ();
|
1938 |
|
|
|
1939 |
|
|
/* The intention is to use POSIX Basic Regular Expressions.
|
1940 |
|
|
Always use the GNU regex routine for consistency across all hosts.
|
1941 |
|
|
Our current GNU regex.c does not have all the POSIX features, so this is
|
1942 |
|
|
just an approximation. */
|
1943 |
|
|
re_set_syntax (RE_SYNTAX_GREP);
|
1944 |
|
|
|
1945 |
|
|
c = add_cmd ("directory", class_files, directory_command, _("\
|
1946 |
|
|
Add directory DIR to beginning of search path for source files.\n\
|
1947 |
|
|
Forget cached info on source file locations and line positions.\n\
|
1948 |
|
|
DIR can also be $cwd for the current working directory, or $cdir for the\n\
|
1949 |
|
|
directory in which the source file was compiled into object code.\n\
|
1950 |
|
|
With no argument, reset the search path to $cdir:$cwd, the default."),
|
1951 |
|
|
&cmdlist);
|
1952 |
|
|
|
1953 |
|
|
if (dbx_commands)
|
1954 |
|
|
add_com_alias ("use", "directory", class_files, 0);
|
1955 |
|
|
|
1956 |
|
|
set_cmd_completer (c, filename_completer);
|
1957 |
|
|
|
1958 |
|
|
add_cmd ("directories", no_class, show_directories, _("\
|
1959 |
|
|
Current search path for finding source files.\n\
|
1960 |
|
|
$cwd in the path means the current working directory.\n\
|
1961 |
|
|
$cdir in the path means the compilation directory of the source file."),
|
1962 |
|
|
&showlist);
|
1963 |
|
|
|
1964 |
|
|
if (xdb_commands)
|
1965 |
|
|
{
|
1966 |
|
|
add_com_alias ("D", "directory", class_files, 0);
|
1967 |
|
|
add_cmd ("ld", no_class, show_directories, _("\
|
1968 |
|
|
Current search path for finding source files.\n\
|
1969 |
|
|
$cwd in the path means the current working directory.\n\
|
1970 |
|
|
$cdir in the path means the compilation directory of the source file."),
|
1971 |
|
|
&cmdlist);
|
1972 |
|
|
}
|
1973 |
|
|
|
1974 |
|
|
add_info ("source", source_info,
|
1975 |
|
|
_("Information about the current source file."));
|
1976 |
|
|
|
1977 |
|
|
add_info ("line", line_info, _("\
|
1978 |
|
|
Core addresses of the code for a source line.\n\
|
1979 |
|
|
Line can be specified as\n\
|
1980 |
|
|
LINENUM, to list around that line in current file,\n\
|
1981 |
|
|
FILE:LINENUM, to list around that line in that file,\n\
|
1982 |
|
|
FUNCTION, to list around beginning of that function,\n\
|
1983 |
|
|
FILE:FUNCTION, to distinguish among like-named static functions.\n\
|
1984 |
|
|
Default is to describe the last source line that was listed.\n\n\
|
1985 |
|
|
This sets the default address for \"x\" to the line's first instruction\n\
|
1986 |
|
|
so that \"x/i\" suffices to start examining the machine code.\n\
|
1987 |
|
|
The address is also stored as the value of \"$_\"."));
|
1988 |
|
|
|
1989 |
|
|
add_com ("forward-search", class_files, forward_search_command, _("\
|
1990 |
|
|
Search for regular expression (see regex(3)) from last line listed.\n\
|
1991 |
|
|
The matching line number is also stored as the value of \"$_\"."));
|
1992 |
|
|
add_com_alias ("search", "forward-search", class_files, 0);
|
1993 |
|
|
|
1994 |
|
|
add_com ("reverse-search", class_files, reverse_search_command, _("\
|
1995 |
|
|
Search backward for regular expression (see regex(3)) from last line listed.\n\
|
1996 |
|
|
The matching line number is also stored as the value of \"$_\"."));
|
1997 |
|
|
|
1998 |
|
|
if (xdb_commands)
|
1999 |
|
|
{
|
2000 |
|
|
add_com_alias ("/", "forward-search", class_files, 0);
|
2001 |
|
|
add_com_alias ("?", "reverse-search", class_files, 0);
|
2002 |
|
|
}
|
2003 |
|
|
|
2004 |
|
|
add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\
|
2005 |
|
|
Set number of source lines gdb will list by default."), _("\
|
2006 |
|
|
Show number of source lines gdb will list by default."), NULL,
|
2007 |
|
|
NULL,
|
2008 |
|
|
show_lines_to_list,
|
2009 |
|
|
&setlist, &showlist);
|
2010 |
|
|
|
2011 |
|
|
add_cmd ("substitute-path", class_files, set_substitute_path_command,
|
2012 |
|
|
_("\
|
2013 |
|
|
Usage: set substitute-path FROM TO\n\
|
2014 |
|
|
Add a substitution rule replacing FROM into TO in source file names.\n\
|
2015 |
|
|
If a substitution rule was previously set for FROM, the old rule\n\
|
2016 |
|
|
is replaced by the new one."),
|
2017 |
|
|
&setlist);
|
2018 |
|
|
|
2019 |
|
|
add_cmd ("substitute-path", class_files, unset_substitute_path_command,
|
2020 |
|
|
_("\
|
2021 |
|
|
Usage: unset substitute-path [FROM]\n\
|
2022 |
|
|
Delete the rule for substituting FROM in source file names. If FROM\n\
|
2023 |
|
|
is not specified, all substituting rules are deleted.\n\
|
2024 |
|
|
If the debugger cannot find a rule for FROM, it will display a warning."),
|
2025 |
|
|
&unsetlist);
|
2026 |
|
|
|
2027 |
|
|
add_cmd ("substitute-path", class_files, show_substitute_path_command,
|
2028 |
|
|
_("\
|
2029 |
|
|
Usage: show substitute-path [FROM]\n\
|
2030 |
|
|
Print the rule for substituting FROM in source file names. If FROM\n\
|
2031 |
|
|
is not specified, print all substitution rules."),
|
2032 |
|
|
&showlist);
|
2033 |
|
|
}
|