/* List lines of source files for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1988 Free Software Foundation, Inc.
-
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
-
-#include <stdio.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/file.h>
+ Copyright 1986, 87, 88, 89, 91, 92, 93, 94, 95, 96, 97, 1998
+ Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+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 2 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, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
#include "defs.h"
-#include "initialize.h"
#include "symtab.h"
+#include "expression.h"
+#include "language.h"
+#include "command.h"
+#include "gdbcmd.h"
+#include "frame.h"
+#include "value.h"
+
+#include <sys/types.h>
+#include "gdb_string.h"
+#include "gdb_stat.h"
+#include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include "gdbcore.h"
+#include "gnu-regex.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "annotate.h"
+#include "gdbtypes.h"
+
+#ifdef CRLF_SOURCE_FILES
+
+/* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the
+ host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is
+ much faster than defining LSEEK_NOT_LINEAR. */
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#define OPEN_MODE (O_RDONLY | O_BINARY)
+#define FDOPEN_MODE FOPEN_RB
+
+#else /* ! defined (CRLF_SOURCE_FILES) */
+
+#define OPEN_MODE O_RDONLY
+#define FDOPEN_MODE FOPEN_RT
+
+#endif /* ! defined (CRLF_SOURCE_FILES) */
+
+/* Prototypes for local functions. */
+
+static int open_source_file PARAMS ((struct symtab *));
+
+static int get_filename_and_charpos PARAMS ((struct symtab *, char **));
+
+static void reverse_search_command PARAMS ((char *, int));
+
+static void forward_search_command PARAMS ((char *, int));
+
+static void line_info PARAMS ((char *, int));
+
+static void list_command PARAMS ((char *, int));
+
+static void ambiguous_line_spec PARAMS ((struct symtabs_and_lines *));
+
+static void source_info PARAMS ((char *, int));
+
+static void show_directories PARAMS ((char *, int));
+
+static void find_source_lines PARAMS ((struct symtab *, int));
/* Path of directories to search for source files.
Same format as the PATH environment variable's value. */
-static char *source_path;
+char *source_path;
/* Symtab of default file for listing lines of. */
int current_source_line;
+/* Default number of lines to print with commands like "list".
+ This is based on guessing how many long (i.e. more than chars_per_line
+ characters) lines there will be. To be completely correct, "list"
+ and friends should be rewritten to count characters and see where
+ things are wrapping, but that would be a fair amount of work. */
+
+int lines_to_list = 10;
+
/* Line number of last line printed. Default for various commands.
current_source_line is usually, but not always, the same as this. */
static int first_line_listed;
-START_FILE
\f
-/* Set the source file default for the "list" command,
- specifying a symtab. */
+/* Set the source file default for the "list" command to be S.
+
+ If S is NULL, and we don't have a default, find one. This
+ should only be called when the user actually tries to use the
+ default, since we produce an error if we can't find a reasonable
+ default. Also, since this can cause symbols to be read, doing it
+ before we need to would make things slower than necessary. */
void
select_source_symtab (s)
register struct symtab *s;
{
+ struct symtabs_and_lines sals;
+ struct symtab_and_line sal;
+ struct partial_symtab *ps;
+ struct partial_symtab *cs_pst = 0;
+ struct objfile *ofp;
+
if (s)
{
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
+ current_source_symtab = s;
+ current_source_line = 1;
+ return;
+ }
+
+ if (current_source_symtab)
+ return;
- /* Make the default place to list be the function `main'
- if one exists. */
- if (lookup_symbol ("main", 0, VAR_NAMESPACE))
+ /* Make the default place to list be the function `main'
+ if one exists. */
+ if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL))
+ {
+ sals = decode_line_spec ("main", 1);
+ sal = sals.sals[0];
+ free (sals.sals);
+ current_source_symtab = sal.symtab;
+ current_source_line = max (sal.line - (lines_to_list - 1), 1);
+ if (current_source_symtab)
+ return;
+ }
+
+ /* All right; find the last file in the symtab list (ignoring .h's). */
+
+ current_source_line = 1;
+
+ for (ofp = object_files; ofp != NULL; ofp = ofp -> next)
+ {
+ for (s = ofp -> symtabs; s; s = s->next)
{
- sals = decode_line_spec ("main", 1);
- sal = sals.sals[0];
- free (sals.sals);
- current_source_symtab = sal.symtab;
- current_source_line = sal.line - 9;
- return;
+ char *name = s -> filename;
+ int len = strlen (name);
+ if (! (len > 2 && (STREQ (&name[len - 2], ".h"))))
+ {
+ current_source_symtab = s;
+ }
}
+ }
+ if (current_source_symtab)
+ return;
- /* If there is no `main', use the last symtab in the list,
- which is actually the first found in the file's symbol table.
- But ignore .h files. */
- do
+ /* Howabout the partial symbol tables? */
+
+ for (ofp = object_files; ofp != NULL; ofp = ofp -> next)
+ {
+ for (ps = ofp -> psymtabs; ps != NULL; ps = ps -> next)
{
- char *name = s->filename;
+ char *name = ps -> filename;
int len = strlen (name);
- if (! (len > 2 && !strcmp (&name[len - 2], ".h")))
- current_source_symtab = s;
- s = s->next;
+ if (! (len > 2 && (STREQ (&name[len - 2], ".h"))))
+ {
+ cs_pst = ps;
+ }
+ }
+ }
+ if (cs_pst)
+ {
+ if (cs_pst -> readin)
+ {
+ fatal ("Internal: select_source_symtab: readin pst found and no symtabs.");
+ }
+ else
+ {
+ current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst);
}
- while (s);
- current_source_line = 1;
}
+ if (current_source_symtab)
+ return;
+
+ error ("Can't find a default source file");
}
\f
static void
-directories_info ()
+show_directories (ignore, from_tty)
+ char *ignore;
+ int from_tty;
{
- printf ("Source directories searched: %s\n", source_path);
+ puts_filtered ("Source directories searched: ");
+ puts_filtered (source_path);
+ puts_filtered ("\n");
}
+/* Forget what we learned about line positions in source files, and
+ which directories contain them; must check again now since files
+ may be found in a different directory now. */
+
void
-init_source_path ()
+forget_cached_source_info ()
{
register struct symtab *s;
+ register struct objfile *objfile;
+
+ for (objfile = object_files; objfile != NULL; objfile = objfile -> next)
+ {
+ for (s = objfile -> symtabs; s != NULL; s = s -> next)
+ {
+ if (s -> line_charpos != NULL)
+ {
+ mfree (objfile -> md, s -> line_charpos);
+ s -> line_charpos = NULL;
+ }
+ if (s -> fullname != NULL)
+ {
+ mfree (objfile -> md, s -> fullname);
+ s -> fullname = NULL;
+ }
+ }
+ }
+}
- source_path = savestring (current_directory, strlen (current_directory));
+void
+init_source_path ()
+{
+ char buf[20];
- /* Forget what we learned about line positions in source files;
- must check again now since files may be found in
- a different directory now. */
- for (s = symtab_list; s; s = s->next)
- if (s->line_charpos != 0)
- {
- free (s->line_charpos);
- s->line_charpos = 0;
- }
+ sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR);
+ source_path = strsave (buf);
+ forget_cached_source_info ();
}
+/* Add zero or more directories to the front of the source path. */
+
void
directory_command (dirname, from_tty)
char *dirname;
int from_tty;
{
- char *old = source_path;
-
+ dont_repeat ();
+ /* FIXME, this goes to "delete dir"... */
if (dirname == 0)
{
- if (query ("Reinitialize source path to %s? ", current_directory))
+ if (query ("Reinitialize source path to empty? "))
{
+ free (source_path);
init_source_path ();
- free (old);
}
}
else
+ mod_path (dirname, &source_path);
+ if (from_tty)
+ show_directories ((char *)0, from_tty);
+ forget_cached_source_info ();
+}
+
+/* Add zero or more directories to the front of an arbitrary path. */
+
+void
+mod_path (dirname, which_path)
+ char *dirname;
+ char **which_path;
+{
+ char *old = *which_path;
+ int prefix = 0;
+
+ if (dirname == 0)
+ return;
+
+ dirname = strsave (dirname);
+ make_cleanup (free, dirname);
+
+ do
{
+ char *name = dirname;
+ register char *p;
struct stat st;
- register int len = strlen (dirname);
- register char *tem;
- extern char *index ();
- if (index (dirname, ':'))
- error ("Please add one directory at a time to the source path.");
- if (dirname[len - 1] == '/')
- /* Sigh. "foo/" => "foo" */
- dirname[--len] == '\0';
+ {
+ char *separator = strchr (name, DIRNAME_SEPARATOR);
+ char *space = strchr (name, ' ');
+ char *tab = strchr (name, '\t');
+
+ if (separator == 0 && space == 0 && tab == 0)
+ p = dirname = name + strlen (name);
+ else
+ {
+ p = 0;
+ if (separator != 0 && (p == 0 || separator < p))
+ p = separator;
+ if (space != 0 && (p == 0 || space < p))
+ p = space;
+ if (tab != 0 && (p == 0 || tab < p))
+ p = tab;
+ dirname = p + 1;
+ while (*dirname == DIRNAME_SEPARATOR
+ || *dirname == ' '
+ || *dirname == '\t')
+ ++dirname;
+ }
+ }
- while (dirname[len - 1] == '.')
+#ifndef WIN32
+ /* On win32 h:\ is different to h: */
+ if (SLASH_P (p[-1]))
+ /* Sigh. "foo/" => "foo" */
+ --p;
+#endif
+ *p = '\0';
+
+ while (p[-1] == '.')
{
- if (len == 1)
+ if (p - name == 1)
{
- /* "." => getwd () */
- dirname = current_directory;
+ /* "." => getwd (). */
+ name = current_directory;
goto append;
}
- else if (dirname[len - 2] == '/')
+ else if (SLASH_P (p[-2]))
{
- if (len == 2)
+ if (p - name == 2)
{
- /* "/." => "/" */
- dirname[--len] = '\0';
+ /* "/." => "/". */
+ *--p = '\0';
goto append;
}
else
{
- /* "...foo/." => "...foo" */
- dirname[len -= 2] = '\0';
+ /* "...foo/." => "...foo". */
+ p -= 2;
+ *p = '\0';
continue;
}
}
- break;
+ else
+ break;
}
- if (dirname[0] != '/')
- dirname = concat (current_directory, "/", dirname);
+ if (name[0] == '~')
+ name = tilde_expand (name);
+ else if (!ROOTED_P (name) && name[0] != '$')
+ name = concat (current_directory, SLASH_STRING, name, NULL);
else
- dirname = savestring (dirname, len);
- make_cleanup (free, dirname);
-
- if (stat (dirname, &st) < 0)
- perror_with_name (dirname);
- if ((st.st_mode & S_IFMT) != S_IFDIR)
- error ("%s is not a directory.", dirname);
+ name = savestring (name, p - name);
+ make_cleanup (free, name);
+
+ /* Unless it's a variable, check existence. */
+ if (name[0] != '$') {
+ /* These are warnings, not errors, since we don't want a
+ non-existent directory in a .gdbinit file to stop processing
+ of the .gdbinit file.
+
+ Whether they get added to the path is more debatable. Current
+ answer is yes, in case the user wants to go make the directory
+ or whatever. If the directory continues to not exist/not be
+ a directory/etc, then having them in the path should be
+ harmless. */
+ if (stat (name, &st) < 0)
+ {
+ int save_errno = errno;
+ fprintf_unfiltered (gdb_stderr, "Warning: ");
+ print_sys_errmsg (name, save_errno);
+ }
+ else if ((st.st_mode & S_IFMT) != S_IFDIR)
+ warning ("%s is not a directory.", name);
+ }
append:
- len = strlen (dirname);
- tem = source_path;
- while (1)
- {
- if (!strncmp (tem, dirname, len)
- && (tem[len] == '\0' || tem[len] == ':'))
- {
- printf ("\"%s\" is already in the source path.\n",
- dirname);
- break;
- }
- tem = index (tem, ':');
- if (tem)
- tem++;
- else
- {
- source_path = concat (old, ":", dirname);
- free (old);
+ {
+ register unsigned int len = strlen (name);
+
+ p = *which_path;
+ while (1)
+ {
+ if (!strncmp (p, name, len)
+ && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR))
+ {
+ /* Found it in the search path, remove old copy */
+ if (p > *which_path)
+ p--; /* Back over leading separator */
+ if (prefix > p - *which_path)
+ goto skip_dup; /* Same dir twice in one cmd */
+ strcpy (p, &p[len+1]); /* Copy from next \0 or : */
+ }
+ p = strchr (p, DIRNAME_SEPARATOR);
+ if (p != 0)
+ ++p;
+ else
break;
- }
- }
- if (from_tty)
- directories_info ();
+ }
+ if (p == 0)
+ {
+ char tinybuf[2];
+
+ tinybuf[0] = DIRNAME_SEPARATOR;
+ tinybuf[1] = '\0';
+
+ /* If we have already tacked on a name(s) in this command, be sure they stay on the front as we tack on some more. */
+ if (prefix)
+ {
+ char *temp, c;
+
+ c = old[prefix];
+ old[prefix] = '\0';
+ temp = concat (old, tinybuf, name, NULL);
+ old[prefix] = c;
+ *which_path = concat (temp, "", &old[prefix], NULL);
+ prefix = strlen (temp);
+ free (temp);
+ }
+ else
+ {
+ *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL);
+ prefix = strlen (name);
+ }
+ free (old);
+ old = *which_path;
+ }
+ }
+ skip_dup: ;
+ } while (*dirname != '\0');
+}
+
+
+static void
+source_info (ignore, from_tty)
+ char *ignore;
+ int from_tty;
+{
+ register struct symtab *s = current_source_symtab;
+
+ if (!s)
+ {
+ printf_filtered("No current source file.\n");
+ return;
}
+ printf_filtered ("Current source file is %s\n", s->filename);
+ if (s->dirname)
+ printf_filtered ("Compilation directory is %s\n", s->dirname);
+ if (s->fullname)
+ printf_filtered ("Located in %s\n", s->fullname);
+ if (s->nlines)
+ printf_filtered ("Contains %d line%s.\n", s->nlines,
+ s->nlines == 1 ? "" : "s");
+
+ printf_filtered ("Source language is %s.\n", language_str (s->language));
+ printf_filtered ("Compiled with %s debugging format.\n", s->debugformat);
}
+
+
\f
-/* Open a file named STRING, searching path PATH (dir names sep by colons)
+/* Open a file named STRING, searching path PATH (dir names sep by some char)
using mode MODE and protection bits PROT in the calls to open.
+
If TRY_CWD_FIRST, try to open ./STRING before searching PATH.
- (ie pretend the first element of PATH is ".")
+ (ie pretend the first element of PATH is "."). This also indicates
+ that a slash in STRING disables searching of the path (this is
+ so that "exec-file ./foo" or "symbol-file ./foo" insures that you
+ get that particular version of foo or an error message).
+
If FILENAMED_OPENED is non-null, set it to a newly allocated string naming
- the actual file opened (this string will always start with a "/"
+ the actual file opened (this string will always start with a "/". We
+ have to take special pains to avoid doubling the "/" between the directory
+ and the file, sigh! Emacs gets confuzzed by this when we print the
+ source file name!!!
If a file is found, return the descriptor.
Otherwise, return -1, with errno set for the last name we tried to open. */
register char *filename;
register char *p, *p1;
register int len;
+ int alloclen;
- /* ./foo => foo */
- while (string[0] == '.' && string[1] == '/')
- string += 2;
+ if (!path)
+ path = ".";
- if (try_cwd_first || string[0] == '/')
+#ifdef WIN32
+ mode |= O_BINARY;
+#endif
+
+ if (try_cwd_first || SLASH_P (string[0]))
{
+ int i;
filename = string;
fd = open (filename, mode, prot);
- if (fd >= 0 || string[0] == '/')
+ if (fd >= 0)
goto done;
+ for (i = 0; string[i]; i++)
+ if (SLASH_P (string[i]))
+ goto done;
}
- filename = (char *) alloca (strlen (path) + strlen (string) + 2);
+ /* ./foo => foo */
+ while (string[0] == '.' && SLASH_P (string[1]))
+ string += 2;
+
+ alloclen = strlen (path) + strlen (string) + 2;
+ filename = (char *) alloca (alloclen);
fd = -1;
for (p = path; p; p = p1 ? p1 + 1 : 0)
{
- p1 = (char *) index (p, ':');
+ p1 = (char *) strchr (p, DIRNAME_SEPARATOR);
if (p1)
len = p1 - p;
else
len = strlen (p);
- strncpy (filename, p, len);
- filename[len] = 0;
- strcat (filename, "/");
+ if (len == 4 && p[0] == '$' && p[1] == 'c'
+ && p[2] == 'w' && p[3] == 'd') {
+ /* Name is $cwd -- insert current directory name instead. */
+ int newlen;
+
+ /* First, realloc the filename buffer if too short. */
+ len = strlen (current_directory);
+ newlen = len + strlen (string) + 2;
+ if (newlen > alloclen) {
+ alloclen = newlen;
+ filename = (char *) alloca (alloclen);
+ }
+ strcpy (filename, current_directory);
+ } else {
+ /* Normal file name in path -- just use it. */
+ strncpy (filename, p, len);
+ filename[len] = 0;
+ }
+
+ /* Remove trailing slashes */
+ while (len > 0 && SLASH_P (filename[len-1]))
+ filename[--len] = 0;
+
+ strcat (filename+len, SLASH_STRING);
strcat (filename, string);
- fd = open (filename, mode, prot);
+ fd = open (filename, mode);
if (fd >= 0) break;
}
done:
if (filename_opened)
- if (fd < 0)
- *filename_opened = (char *) 0;
- else if (filename[0] == '/')
- *filename_opened = savestring (filename, strlen (filename));
- else
+ {
+ if (fd < 0)
+ *filename_opened = (char *) 0;
+ else if (ROOTED_P (filename))
+ *filename_opened = savestring (filename, strlen (filename));
+ else
+ {
+ /* Beware the // my son, the Emacs barfs, the botch that catch... */
+
+ *filename_opened = concat (current_directory,
+ SLASH_CHAR
+ == current_directory[strlen(current_directory)-1]
+ ? "": SLASH_STRING,
+ filename, NULL);
+ }
+ }
+#ifdef MPW
+ /* This is a debugging hack that can go away when all combinations
+ of Mac and Unix names are handled reasonably. */
+ {
+ extern int debug_openp;
+
+ if (debug_openp)
{
- *filename_opened = concat (current_directory, "/", filename);
+ printf("openp on %s, path %s mode %d prot %d\n returned %d",
+ string, path, mode, prot, fd);
+ if (*filename_opened)
+ printf(" (filename is %s)", *filename_opened);
+ printf("\n");
}
+ }
+#endif /* MPW */
return fd;
}
+
+/* Open a source file given a symtab S. Returns a file descriptor or
+ negative number for error. */
+
+static int
+open_source_file (s)
+ struct symtab *s;
+{
+ char *path = source_path;
+ char *p;
+ int result;
+ char *fullname;
+
+ /* Quick way out if we already know its full name */
+ if (s->fullname)
+ {
+ result = open (s->fullname, OPEN_MODE);
+ if (result >= 0)
+ return result;
+ /* Didn't work -- free old one, try again. */
+ mfree (s->objfile->md, s->fullname);
+ s->fullname = NULL;
+ }
+
+ if (s->dirname != NULL)
+ {
+ /* Replace a path entry of $cdir with the compilation directory name */
+#define cdir_len 5
+ /* We cast strstr's result in case an ANSIhole has made it const,
+ which produces a "required warning" when assigned to a nonconst. */
+ p = (char *)strstr (source_path, "$cdir");
+ if (p && (p == path || p[-1] == DIRNAME_SEPARATOR)
+ && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0'))
+ {
+ int len;
+
+ path = (char *)
+ alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1);
+ len = p - source_path;
+ strncpy (path, source_path, len); /* Before $cdir */
+ strcpy (path + len, s->dirname); /* new stuff */
+ strcat (path + len, source_path + len + cdir_len); /* After $cdir */
+ }
+ }
+
+ result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname);
+ if (result < 0)
+ {
+ /* Didn't work. Try using just the basename. */
+ p = basename (s->filename);
+ if (p != s->filename)
+ result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname);
+ }
+#ifdef MPW
+ if (result < 0)
+ {
+ /* Didn't work. Try using just the MPW basename. */
+ p = (char *) mpw_basename (s->filename);
+ if (p != s->filename)
+ result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname);
+ }
+ if (result < 0)
+ {
+ /* Didn't work. Try using the mixed Unix/MPW basename. */
+ p = (char *) mpw_mixed_basename (s->filename);
+ if (p != s->filename)
+ result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname);
+ }
+#endif /* MPW */
+
+ if (result >= 0)
+ {
+ fullname = s->fullname;
+ s->fullname = mstrsave (s->objfile->md, s->fullname);
+ free (fullname);
+ }
+ return result;
+}
+
+/* Return the path to the source file associated with symtab. Returns NULL
+ if no symtab. */
+
+char *
+symtab_to_filename (s)
+ struct symtab *s;
+{
+ int fd;
+
+ if (!s)
+ return NULL;
+
+ /* If we've seen the file before, just return fullname. */
+
+ if (s->fullname)
+ return s->fullname;
+
+ /* Try opening the file to setup fullname */
+
+ fd = open_source_file (s);
+ if (fd < 0)
+ return s->filename; /* File not found. Just use short name */
+
+ /* Found the file. Cleanup and return the full name */
+
+ close (fd);
+ return s->fullname;
+}
+
\f
/* Create and initialize the table S->line_charpos that records
the positions of the lines in the source file, which is assumed
register char *data, *p, *end;
int nlines = 0;
int lines_allocated = 1000;
- int *line_charpos = (int *) xmalloc (lines_allocated * sizeof (int));
- extern int exec_mtime;
-
- fstat (desc, &st);
- if (get_exec_file (0) != 0 && exec_mtime < st.st_mtime)
- printf ("Source file is more recent than executable.\n");
-
- data = (char *) alloca (st.st_size);
- myread (desc, data, st.st_size);
- end = data + st.st_size;
- p = data;
- line_charpos[0] = 0;
- nlines = 1;
- while (p != end)
- {
- if (*p++ == '\n'
- /* A newline at the end does not start a new line. */
- && p != end)
- {
- if (nlines == lines_allocated)
- {
- lines_allocated *= 2;
- line_charpos = (int *) xrealloc (line_charpos,
- sizeof (int) * lines_allocated);
- }
- line_charpos[nlines++] = p - data;
- }
+ int *line_charpos;
+ long mtime;
+ int size;
+
+ line_charpos = (int *) xmmalloc (s -> objfile -> md,
+ lines_allocated * sizeof (int));
+ if (fstat (desc, &st) < 0)
+ perror_with_name (s->filename);
+
+ if (s && s->objfile && s->objfile->obfd)
+ {
+ mtime = bfd_get_mtime(s->objfile->obfd);
+ if (mtime && mtime < st.st_mtime)
+ printf_filtered ("Source file is more recent than executable.\n");
+ }
+ else if (exec_bfd)
+ {
+ mtime = bfd_get_mtime(exec_bfd);
+ if (mtime && mtime < st.st_mtime)
+ printf_filtered ("Source file is more recent than executable.\n");
}
+
+#ifdef LSEEK_NOT_LINEAR
+ {
+ char c;
+
+ /* Have to read it byte by byte to find out where the chars live */
+
+ line_charpos[0] = lseek (desc, 0, SEEK_CUR);
+ nlines = 1;
+ while (myread(desc, &c, 1)>0)
+ {
+ if (c == '\n')
+ {
+ if (nlines == lines_allocated)
+ {
+ lines_allocated *= 2;
+ line_charpos =
+ (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
+ sizeof (int) * lines_allocated);
+ }
+ line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR);
+ }
+ }
+ }
+#else /* lseek linear. */
+ {
+ struct cleanup *old_cleanups;
+
+ /* st_size might be a large type, but we only support source files whose
+ size fits in an int. */
+ size = (int) st.st_size;
+
+ /* Use malloc, not alloca, because this may be pretty large, and we may
+ run into various kinds of limits on stack size. */
+ data = (char *) xmalloc (size);
+ old_cleanups = make_cleanup (free, data);
+
+ /* Reassign `size' to result of read for systems where \r\n -> \n. */
+ size = myread (desc, data, size);
+ if (size < 0)
+ perror_with_name (s->filename);
+ end = data + size;
+ p = data;
+ line_charpos[0] = 0;
+ nlines = 1;
+ while (p != end)
+ {
+ if (*p++ == '\n'
+ /* A newline at the end does not start a new line. */
+ && p != end)
+ {
+ if (nlines == lines_allocated)
+ {
+ lines_allocated *= 2;
+ line_charpos =
+ (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
+ sizeof (int) * lines_allocated);
+ }
+ line_charpos[nlines++] = p - data;
+ }
+ }
+ do_cleanups (old_cleanups);
+ }
+#endif /* lseek linear. */
s->nlines = nlines;
- s->line_charpos = (int *) xrealloc (line_charpos, nlines * sizeof (int));
+ s->line_charpos =
+ (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
+ nlines * sizeof (int));
+
}
/* Return the character position of a line LINE in symtab S.
Return 0 if anything is invalid. */
+#if 0 /* Currently unused */
+
int
source_line_charpos (s, line)
struct symtab *s;
line = s->nlines;
return line;
}
+
+#endif /* 0 */
+
\f
/* Get full pathname and line number positions for a symtab.
Return nonzero if line numbers may have changed.
Set *FULLNAME to actual name of the file as found by `openp',
or to 0 if the file is not found. */
-int
-get_filename_and_charpos (s, line, fullname)
+static int
+get_filename_and_charpos (s, fullname)
struct symtab *s;
- int line;
char **fullname;
{
register int desc, linenums_changed = 0;
- desc = openp (source_path, 0, s->filename, O_RDONLY, 0, &s->fullname);
+ desc = open_source_file (s);
if (desc < 0)
{
if (fullname)
Return 1 if successful, 0 if could not find the file. */
int
-identify_source_line (s, line, mid_statement)
+identify_source_line (s, line, mid_statement, pc)
struct symtab *s;
int line;
int mid_statement;
+ CORE_ADDR pc;
{
if (s->line_charpos == 0)
- get_filename_and_charpos (s, line, 0);
+ get_filename_and_charpos (s, (char **)NULL);
if (s->fullname == 0)
return 0;
- printf ("\032\032%s:%d:%d:%s\n", s->fullname,
- line, s->line_charpos[line - 1],
- mid_statement ? "middle" : "beg");
+ if (line > s->nlines)
+ /* Don't index off the end of the line_charpos array. */
+ return 0;
+ annotate_source (s->fullname, line, s->line_charpos[line - 1],
+ mid_statement, pc);
+
current_source_line = line;
first_line_listed = line;
last_line_listed = line;
register FILE *stream;
int nlines = stopline - line;
- desc = openp (source_path, 0, s->filename, O_RDONLY, 0, &s->fullname);
+ /* Regardless of whether we can open the file, set current_source_symtab. */
+ current_source_symtab = s;
+ current_source_line = line;
+ first_line_listed = line;
+
+ desc = open_source_file (s);
if (desc < 0)
{
- extern int errno;
- if (! noerror)
- perror_with_name (s->filename);
- print_sys_errmsg (s->filename, errno);
+ if (! noerror) {
+ char *name = alloca (strlen (s->filename) + 100);
+ sprintf (name, "%s:%d", s->filename, line);
+ print_sys_errmsg (name, errno);
+ }
return;
}
if (line < 1 || line > s->nlines)
{
close (desc);
- error ("Line number out of range; %s has %d lines.",
- s->filename, s->nlines);
+ error ("Line number %d out of range; %s has %d lines.",
+ line, s->filename, s->nlines);
}
if (lseek (desc, s->line_charpos[line - 1], 0) < 0)
perror_with_name (s->filename);
}
- current_source_symtab = s;
- current_source_line = line;
- first_line_listed = line;
-
- stream = fdopen (desc, "r");
+ stream = fdopen (desc, FDOPEN_MODE);
clearerr (stream);
while (nlines-- > 0)
c = fgetc (stream);
if (c == EOF) break;
last_line_listed = current_source_line;
- printf ("%d\t", current_source_line++);
+ printf_filtered ("%d\t", current_source_line++);
do
{
- if (c < 040 && c != '\t' && c != '\n')
+ if (c < 040 && c != '\t' && c != '\n' && c != '\r')
+ printf_filtered ("^%c", c + 0100);
+ else if (c == 0177)
+ printf_filtered ("^?");
+#ifdef CRLF_SOURCE_FILES
+ else if (c == '\r')
{
- fputc ('^', stdout);
- fputc (c + 0100, stdout);
+ /* Just skip \r characters. */
}
- else if (c == 0177)
- printf ("^?");
+#endif
else
- fputc (c, stdout);
+ printf_filtered ("%c", c);
} while (c != '\n' && (c = fgetc (stream)) >= 0);
}
fclose (stream);
}
\f
+
+
+/* Print a list of files and line numbers which a user may choose from
+ in order to list a function which was specified ambiguously (as with
+ `list classname::overloadedfuncname', for example). The vector in
+ SALS provides the filenames and line numbers. */
+
+static void
+ambiguous_line_spec (sals)
+ struct symtabs_and_lines *sals;
+{
+ int i;
+
+ for (i = 0; i < sals->nelts; ++i)
+ printf_filtered("file: \"%s\", line number: %d\n",
+ sals->sals[i].symtab->filename, sals->sals[i].line);
+}
+
static void
list_command (arg, from_tty)
char *arg;
int linenum_beg = 0;
char *p;
- if (symtab_list == 0)
- error ("Listing source lines requires symbols.");
+ if (!have_full_symbols () && !have_partial_symbols())
+ error ("No symbol table is loaded. Use the \"file\" command.");
+
+ /* Pull in a current source symtab if necessary */
+ if (current_source_symtab == 0 &&
+ (arg == 0 || arg[0] == '+' || arg[0] == '-'))
+ select_source_symtab (0);
/* "l" or "l +" lists next ten lines. */
- if (arg == 0 || !strcmp (arg, "+"))
+ if (arg == 0 || STREQ (arg, "+"))
{
if (current_source_symtab == 0)
error ("No default source file yet. Do \"help list\".");
print_source_lines (current_source_symtab, current_source_line,
- current_source_line + 10, 0);
+ current_source_line + lines_to_list, 0);
return;
}
/* "l -" lists previous ten lines, the ones before the ten just listed. */
- if (!strcmp (arg, "-"))
+ if (STREQ (arg, "-"))
{
if (current_source_symtab == 0)
error ("No default source file yet. Do \"help list\".");
print_source_lines (current_source_symtab,
- max (first_line_listed - 10, 1),
+ max (first_line_listed - lines_to_list, 1),
first_line_listed, 0);
return;
}
dummy_beg = 1;
else
{
- sals = decode_line_1 (&arg1, 0, 0, 0);
+ sals = decode_line_1 (&arg1, 0, 0, 0, 0);
if (! sals.nelts) return; /* C++ */
- if (sals.nelts != 1)
+ if (sals.nelts > 1)
{
- error ("Unreasonable listing request");
+ ambiguous_line_spec (&sals);
+ free (sals.sals);
+ return;
}
sal = sals.sals[0];
else
{
if (dummy_beg)
- sals_end = decode_line_1 (&arg1, 0, 0, 0);
+ sals_end = decode_line_1 (&arg1, 0, 0, 0, 0);
else
- sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line);
- if (! sals_end.nelts) return; /* C++ */
+ sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0);
+ if (sals_end.nelts == 0)
+ return;
+ if (sals_end.nelts > 1)
+ {
+ ambiguous_line_spec (&sals_end);
+ free (sals_end.sals);
+ return;
+ }
sal_end = sals_end.sals[0];
free (sals_end.sals);
}
if (*arg == '*')
{
if (sal.symtab == 0)
- error ("No source file for address 0x%x.", sal.pc);
+ /* FIXME-32x64--assumes sal.pc fits in long. */
+ error ("No source file for address %s.",
+ local_hex_string((unsigned long) sal.pc));
sym = find_pc_function (sal.pc);
if (sym)
- printf ("0x%x is in %s (%s, line %d).\n",
- sal.pc, SYMBOL_NAME (sym), sal.symtab->filename, sal.line);
+ {
+ print_address_numeric (sal.pc, 1, gdb_stdout);
+ printf_filtered (" is in ");
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
+ printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line);
+ }
else
- printf ("0x%x is in %s, line %d.\n",
- sal.pc, sal.symtab->filename, sal.line);
+ {
+ print_address_numeric (sal.pc, 1, gdb_stdout);
+ printf_filtered (" is at %s:%d.\n",
+ sal.symtab->filename, sal.line);
+ }
}
/* If line was not specified by just a line number,
if (dummy_beg && sal_end.symtab == 0)
error ("No default source file yet. Do \"help list\".");
if (dummy_beg)
- print_source_lines (sal_end.symtab, max (sal_end.line - 9, 1),
+ print_source_lines (sal_end.symtab,
+ max (sal_end.line - (lines_to_list - 1), 1),
sal_end.line + 1, 0);
else if (sal.symtab == 0)
error ("No default source file yet. Do \"help list\".");
else if (no_end)
- print_source_lines (sal.symtab, max (sal.line - 5, 1), sal.line + 5, 0);
+ print_source_lines (sal.symtab,
+ max (sal.line - (lines_to_list / 2), 1),
+ sal.line + (lines_to_list / 2), 0);
else
print_source_lines (sal.symtab, sal.line,
- dummy_end ? sal.line + 10 : sal_end.line + 1, 0);
+ (dummy_end
+ ? sal.line + lines_to_list
+ : sal_end.line + 1),
+ 0);
}
\f
/* Print info on range of pc's in a specified line. */
{
struct symtabs_and_lines sals;
struct symtab_and_line sal;
- int start_pc, end_pc;
+ CORE_ADDR start_pc, end_pc;
+ int i;
+
+ INIT_SAL (&sal); /* initialize to zeroes */
if (arg == 0)
{
sal.symtab = current_source_symtab;
sal.line = last_line_listed;
+ sals.nelts = 1;
+ sals.sals = (struct symtab_and_line *)
+ xmalloc (sizeof (struct symtab_and_line));
+ sals.sals[0] = sal;
}
else
{
- sals = decode_line_spec (arg);
-
- if (sals.nelts == 0)
- return; /* C++ */
- if (sals.nelts != 1)
- error ("unreasonable line info request");
+ sals = decode_line_spec_1 (arg, 0);
- sal = sals.sals[0];
- free (sals.sals);
- /* If this command is repeated with RET,
- turn it into the no-arg variant. */
-
- if (from_tty)
- *arg = 0;
+ dont_repeat ();
}
- if (sal.symtab == 0)
- error ("No source file specified.");
- if (sal.line > 0
- && find_line_pc_range (sal.symtab, sal.line, &start_pc, &end_pc))
+ /* C++ More than one line may have been specified, as when the user
+ specifies an overloaded function name. Print info on them all. */
+ for (i = 0; i < sals.nelts; i++)
{
- if (start_pc == end_pc)
- printf ("Line %d of \"%s\" is at pc 0x%x but contains no code.\n",
- sal.line, sal.symtab->filename, start_pc);
+ sal = sals.sals[i];
+
+ if (sal.symtab == 0)
+ {
+ printf_filtered ("No line number information available");
+ if (sal.pc != 0)
+ {
+ /* This is useful for "info line *0x7f34". If we can't tell the
+ user about a source line, at least let them have the symbolic
+ address. */
+ printf_filtered (" for address ");
+ wrap_here (" ");
+ print_address (sal.pc, gdb_stdout);
+ }
+ else
+ printf_filtered (".");
+ printf_filtered ("\n");
+ }
+ else if (sal.line > 0
+ && find_line_pc_range (sal, &start_pc, &end_pc))
+ {
+ if (start_pc == end_pc)
+ {
+ printf_filtered ("Line %d of \"%s\"",
+ sal.line, sal.symtab->filename);
+ wrap_here (" ");
+ printf_filtered (" is at address ");
+ print_address (start_pc, gdb_stdout);
+ wrap_here (" ");
+ printf_filtered (" but contains no code.\n");
+ }
+ else
+ {
+ printf_filtered ("Line %d of \"%s\"",
+ sal.line, sal.symtab->filename);
+ wrap_here (" ");
+ printf_filtered (" starts at address ");
+ print_address (start_pc, gdb_stdout);
+ wrap_here (" ");
+ printf_filtered (" and ends at ");
+ print_address (end_pc, gdb_stdout);
+ printf_filtered (".\n");
+ }
+
+ /* x/i should display this line's code. */
+ set_next_address (start_pc);
+
+ /* Repeating "info line" should do the following line. */
+ last_line_listed = sal.line + 1;
+
+ /* If this is the only line, show the source code. If it could
+ not find the file, don't do anything special. */
+ if (annotation_level && sals.nelts == 1)
+ identify_source_line (sal.symtab, sal.line, 0, start_pc);
+ }
else
- printf ("Line %d of \"%s\" starts at pc 0x%x and ends at 0x%x.\n",
- sal.line, sal.symtab->filename, start_pc, end_pc);
- /* x/i should display this line's code. */
- set_next_address (start_pc);
- /* Repeating "info line" should do the following line. */
- last_line_listed = sal.line + 1;
+ /* Is there any case in which we get here, and have an address
+ which the user would want to see? If we have debugging symbols
+ and no line numbers? */
+ printf_filtered ("Line number %d is out of range for \"%s\".\n",
+ sal.line, sal.symtab->filename);
}
- else
- printf ("Line number %d is out of range for \"%s\".\n",
- sal.line, sal.symtab->filename);
+ free (sals.sals);
}
\f
/* Commands to search the source file for a regexp. */
+/* ARGSUSED */
static void
forward_search_command (regex, from_tty)
char *regex;
+ int from_tty;
{
register int c;
register int desc;
if (msg)
error (msg);
- if (current_source_symtab == 0)
- error ("No default source file yet. Do \"help list\".");
+ if (current_source_symtab == 0)
+ select_source_symtab (0);
/* Search from last_line_listed+1 in current_source_symtab */
- desc = openp (source_path, 0, current_source_symtab->filename,
- O_RDONLY, 0, ¤t_source_symtab->fullname);
+ desc = open_source_file (current_source_symtab);
if (desc < 0)
perror_with_name (current_source_symtab->filename);
perror_with_name (current_source_symtab->filename);
}
- stream = fdopen (desc, "r");
+ stream = fdopen (desc, FDOPEN_MODE);
clearerr (stream);
while (1) {
- char buf[4096]; /* Should be reasonable??? */
- register char *p = buf;
+ static char *buf = NULL;
+ register char *p;
+ int cursize, newsize;
+
+ cursize = 256;
+ buf = xmalloc (cursize);
+ p = buf;
- c = fgetc (stream);
+ c = getc (stream);
if (c == EOF)
break;
do {
*p++ = c;
- } while (c != '\n' && (c = fgetc (stream)) >= 0);
+ if (p - buf == cursize)
+ {
+ newsize = cursize + cursize / 2;
+ buf = xrealloc (buf, newsize);
+ p = buf + cursize;
+ cursize = newsize;
+ }
+ } while (c != '\n' && (c = getc (stream)) >= 0);
/* we now have a source line in buf, null terminate and match */
*p = 0;
{
/* Match! */
fclose (stream);
- print_source_lines (current_source_symtab,
- line, line+1, 0);
- current_source_line = max (line - 5, 1);
+ print_source_lines (current_source_symtab, line, line+1, 0);
+ set_internalvar (lookup_internalvar ("_"),
+ value_from_longest (builtin_type_int,
+ (LONGEST) line));
+ current_source_line = max (line - lines_to_list / 2, 1);
return;
}
line++;
}
- printf ("Expression not found\n");
+ printf_filtered ("Expression not found\n");
fclose (stream);
}
+/* ARGSUSED */
static void
reverse_search_command (regex, from_tty)
char *regex;
+ int from_tty;
{
register int c;
register int desc;
if (msg)
error (msg);
- if (current_source_symtab == 0)
- error ("No default source file yet. Do \"help list\".");
+ if (current_source_symtab == 0)
+ select_source_symtab (0);
/* Search from last_line_listed-1 in current_source_symtab */
- desc = openp (source_path, 0, current_source_symtab->filename,
- O_RDONLY, 0, ¤t_source_symtab->fullname);
+ desc = open_source_file (current_source_symtab);
if (desc < 0)
perror_with_name (current_source_symtab->filename);
perror_with_name (current_source_symtab->filename);
}
- stream = fdopen (desc, "r");
+ stream = fdopen (desc, FDOPEN_MODE);
clearerr (stream);
- while (1)
+ while (line > 1)
{
+/* FIXME!!! We walk right off the end of buf if we get a long line!!! */
char buf[4096]; /* Should be reasonable??? */
register char *p = buf;
- c = fgetc (stream);
+ c = getc (stream);
if (c == EOF)
break;
do {
*p++ = c;
- } while (c != '\n' && (c = fgetc (stream)) >= 0);
+ } while (c != '\n' && (c = getc (stream)) >= 0);
/* We now have a source line in buf; null terminate and match. */
*p = 0;
fclose (stream);
print_source_lines (current_source_symtab,
line, line+1, 0);
- current_source_line = max (line - 5, 1);
+ set_internalvar (lookup_internalvar ("_"),
+ value_from_longest (builtin_type_int,
+ (LONGEST) line));
+ current_source_line = max (line - lines_to_list / 2, 1);
return;
}
line--;
}
}
- printf ("Expression not found\n");
+ printf_filtered ("Expression not found\n");
fclose (stream);
return;
}
\f
-static
-initialize ()
+void
+_initialize_source ()
{
+ struct cmd_list_element *c;
current_source_symtab = 0;
init_source_path ();
- add_com ("directory", class_files, directory_command,
- "Add directory DIR to end of search path for source files.\n\
-With no argument, reset the search path to just the working directory\n\
-and forget cached info on line positions in source files.");
-
- add_info ("directories", directories_info,
- "Current search path for finding source files.");
+ /* The intention is to use POSIX Basic Regular Expressions.
+ Always use the GNU regex routine for consistency across all hosts.
+ Our current GNU regex.c does not have all the POSIX features, so this is
+ just an approximation. */
+ re_set_syntax (RE_SYNTAX_GREP);
+
+ c = add_cmd ("directory", class_files, directory_command,
+ "Add directory DIR to beginning of search path for source files.\n\
+Forget cached info on source file locations and line positions.\n\
+DIR can also be $cwd for the current working directory, or $cdir for the\n\
+directory in which the source file was compiled into object code.\n\
+With no argument, reset the search path to $cdir:$cwd, the default.",
+ &cmdlist);
+ c->completer = filename_completer;
+
+ add_cmd ("directories", no_class, show_directories,
+ "Current search path for finding source files.\n\
+$cwd in the path means the current working directory.\n\
+$cdir in the path means the compilation directory of the source file.",
+ &showlist);
+
+ add_info ("source", source_info,
+ "Information about the current source file.");
add_info ("line", line_info,
- "Core addresses of the code for a source line.\n\
+ concat ("Core addresses of the code for a source line.\n\
Line can be specified as\n\
LINENUM, to list around that line in current file,\n\
FILE:LINENUM, to list around that line in that file,\n\
FUNCTION, to list around beginning of that function,\n\
FILE:FUNCTION, to distinguish among like-named static functions.\n\
+", "\
Default is to describe the last source line that was listed.\n\n\
This sets the default address for \"x\" to the line's first instruction\n\
so that \"x/i\" suffices to start examining the machine code.\n\
-The address is also stored as the value of \"$_\".");
+The address is also stored as the value of \"$_\".", NULL));
add_com ("forward-search", class_files, forward_search_command,
- "Search for regular expression (see regex(3)) from last line listed.");
+ "Search for regular expression (see regex(3)) from last line listed.\n\
+The matching line number is also stored as the value of \"$_\".");
add_com_alias ("search", "forward-search", class_files, 0);
add_com ("reverse-search", class_files, reverse_search_command,
- "Search backward for regular expression (see regex(3)) from last line listed.");
+ "Search backward for regular expression (see regex(3)) from last line listed.\n\
+The matching line number is also stored as the value of \"$_\".");
add_com ("list", class_files, list_command,
- "List specified function or line.\n\
+ concat ("List specified function or line.\n\
With no argument, lists ten more lines after or around previous listing.\n\
\"list -\" lists the ten lines before a previous ten-line listing.\n\
One argument specifies a line, and ten lines are listed around that line.\n\
Two arguments with comma between specify starting and ending lines to list.\n\
+", "\
Lines can be specified in these ways:\n\
LINENUM, to list around that line in current file,\n\
FILE:LINENUM, to list around that line in that file,\n\
FUNCTION, to list around beginning of that function,\n\
FILE:FUNCTION, to distinguish among like-named static functions.\n\
*ADDRESS, to list around the line containing that address.\n\
-With two args if one is empty it stands for ten lines away from the other arg.");
-}
+With two args if one is empty it stands for ten lines away from the other arg.", NULL));
-END_FILE
+ add_com_alias ("l", "list", class_files, 1);
+
+ add_show_from_set
+ (add_set_cmd ("listsize", class_support, var_uinteger,
+ (char *)&lines_to_list,
+ "Set number of source lines gdb will list by default.",
+ &setlist),
+ &showlist);
+}
projects / thirdparty / binutils-gdb.git / blobdiff