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* source.c: Various cosmetic changes.
(forward_search_command): Handle very long source lines correctly.
This commit is contained in:
Stan Shebs
parent
09a1cedb20
commit
85ae1317ad
@ -1,3 +1,8 @@
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Wed Dec 7 18:22:59 1994 Stan Shebs <shebs@andros.cygnus.com>
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* source.c: Various cosmetic changes.
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(forward_search_command): Handle very long source lines correctly.
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Wed Dec 7 13:21:47 1994 Rob Savoye <rob@darkstar.cygnus.com>
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* hppa-tdep.c: Use GDB_TARGET_IS_PA_ELF so SOM target support will
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344
gdb/source.c
344
gdb/source.c
@ -1,5 +1,6 @@
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/* List lines of source files for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1988, 1989, 1991 Free Software Foundation, Inc.
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Copyright 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994
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Free Software Foundation, Inc.
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This file is part of GDB.
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@ -42,35 +43,25 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Prototypes for local functions. */
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static int
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open_source_file PARAMS ((struct symtab *));
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static int open_source_file PARAMS ((struct symtab *));
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static int
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get_filename_and_charpos PARAMS ((struct symtab *, char **));
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static int get_filename_and_charpos PARAMS ((struct symtab *, char **));
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static void
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reverse_search_command PARAMS ((char *, int));
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static void reverse_search_command PARAMS ((char *, int));
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static void
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forward_search_command PARAMS ((char *, int));
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static void forward_search_command PARAMS ((char *, int));
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static void
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line_info PARAMS ((char *, int));
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static void line_info PARAMS ((char *, int));
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static void
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list_command PARAMS ((char *, int));
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static void list_command PARAMS ((char *, int));
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static void
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ambiguous_line_spec PARAMS ((struct symtabs_and_lines *));
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static void ambiguous_line_spec PARAMS ((struct symtabs_and_lines *));
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static void
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source_info PARAMS ((char *, int));
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static void source_info PARAMS ((char *, int));
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static void
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show_directories PARAMS ((char *, int));
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static void show_directories PARAMS ((char *, int));
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static void
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find_source_lines PARAMS ((struct symtab *, int));
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static void find_source_lines PARAMS ((struct symtab *, int));
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/* If we use this declaration, it breaks because of fucking ANSI "const" stuff
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on some systems. We just have to not declare it at all, have it default
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@ -207,10 +198,9 @@ show_directories (ignore, from_tty)
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puts_filtered ("\n");
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}
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/* Forget what we learned about line positions in source files,
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and which directories contain them;
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must check again now since files may be found in
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a different directory now. */
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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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void
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forget_cached_source_info ()
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@ -293,22 +283,25 @@ mod_path (dirname, which_path)
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struct stat st;
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{
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char *colon = strchr (name, DIRNAME_SEPARATOR);
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char *separator = strchr (name, DIRNAME_SEPARATOR);
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char *space = strchr (name, ' ');
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char *tab = strchr (name, '\t');
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if (colon == 0 && space == 0 && tab == 0)
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if (separator == 0 && space == 0 && tab == 0)
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p = dirname = name + strlen (name);
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else
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{
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p = 0;
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if (colon != 0 && (p == 0 || colon < p))
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p = colon;
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if (separator != 0 && (p == 0 || separator < p))
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p = separator;
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if (space != 0 && (p == 0 || space < p))
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p = space;
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if (tab != 0 && (p == 0 || tab < p))
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p = tab;
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dirname = p + 1;
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while (*dirname == DIRNAME_SEPARATOR || *dirname == ' ' || *dirname == '\t')
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while (*dirname == DIRNAME_SEPARATOR
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|| *dirname == ' '
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|| *dirname == '\t')
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++dirname;
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}
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}
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@ -387,7 +380,7 @@ mod_path (dirname, which_path)
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{
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/* Found it in the search path, remove old copy */
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if (p > *which_path)
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p--; /* Back over leading colon */
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p--; /* Back over leading separator */
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if (prefix > p - *which_path)
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goto skip_dup; /* Same dir twice in one cmd */
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strcpy (p, &p[len+1]); /* Copy from next \0 or : */
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@ -551,24 +544,37 @@ openp (path, try_cwd_first, string, mode, prot, filename_opened)
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done:
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if (filename_opened)
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if (fd < 0)
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*filename_opened = (char *) 0;
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else if (filename[0] == '/')
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*filename_opened = savestring (filename, strlen (filename));
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else
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{
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/* Beware the // my son, the Emacs barfs, the botch that catch... */
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*filename_opened = concat (current_directory,
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'/' == current_directory[strlen(current_directory)-1]? "": "/",
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filename, NULL);
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}
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{
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if (fd < 0)
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*filename_opened = (char *) 0;
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else if (filename[0] == '/')
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*filename_opened = savestring (filename, strlen (filename));
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else
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{
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/* Beware the // my son, the Emacs barfs, the botch that catch... */
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*filename_opened = concat (current_directory,
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'/' == current_directory[strlen(current_directory)-1]? "": "/",
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filename, NULL);
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}
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}
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/* start-sanitize-mpw */
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#ifdef MPW
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if (1) {
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printf("openp on %s, path %s mode %d prot %d\n returned %d",
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string, path, mode, prot, fd);
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if (*filename_opened)
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printf(" (filename is %s)", *filename_opened);
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printf("\n");
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}
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#endif
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/* end-sanitize-mpw */
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return fd;
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}
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/* Open a source file given a symtab S. Returns a file descriptor
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or negative number for error. */
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/* Open a source file given a symtab S. Returns a file descriptor or
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negative number for error. */
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static int
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open_source_file (s)
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@ -598,16 +604,17 @@ open_source_file (s)
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which produces a "required warning" when assigned to a nonconst. */
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p = (char *)strstr (source_path, "$cdir");
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if (p && (p == path || p[-1] == DIRNAME_SEPARATOR)
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&& (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) {
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int len;
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&& (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0'))
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{
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int len;
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path = (char *)
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alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1);
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len = p - source_path;
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strncpy (path, source_path, len); /* Before $cdir */
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strcpy (path + len, s->dirname); /* new stuff */
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strcat (path + len, source_path + len + cdir_len); /* After $cdir */
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}
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path = (char *)
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alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1);
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len = p - source_path;
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strncpy (path, source_path, len); /* Before $cdir */
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strcpy (path + len, s->dirname); /* new stuff */
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strcat (path + len, source_path + len + cdir_len); /* After $cdir */
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}
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}
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result = openp (path, 0, s->filename, O_RDONLY, 0, &s->fullname);
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@ -618,6 +625,24 @@ open_source_file (s)
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if (p != s->filename)
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result = openp (path, 0, p, O_RDONLY, 0, &s->fullname);
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}
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/* start-sanitize-mpw */
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#ifdef MPW
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if (result < 0)
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{
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/* Didn't work. Try using just the MPW basename. */
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p = (char *) mpw_basename (s->filename);
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if (p != s->filename)
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result = openp (path, 0, p, O_RDONLY, 0, &s->fullname);
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}
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if (result < 0)
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{
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/* Didn't work. Try using the mixed Unix/MPW basename. */
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p = (char *) mpw_mixed_basename (s->filename);
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if (p != s->filename)
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result = openp (path, 0, p, O_RDONLY, 0, &s->fullname);
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}
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#endif
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/* end-sanitize-mpw */
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if (result >= 0)
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{
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fullname = s->fullname;
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@ -627,6 +652,35 @@ open_source_file (s)
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return result;
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}
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/* Return the path to the source file associated with symtab. Returns NULL
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if no symtab. */
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char *
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symtab_to_filename (s)
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struct symtab *s;
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{
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int fd;
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if (!s)
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return NULL;
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/* If we've seen the file before, just return fullname. */
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if (s->fullname)
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return s->fullname;
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/* Try opening the file to setup fullname */
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fd = open_source_file (s);
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if (fd < 0)
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return s->filename; /* File not found. Just use short name */
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/* Found the file. Cleanup and return the full name */
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close (fd);
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return s->fullname;
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}
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/* Create and initialize the table S->line_charpos that records
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the positions of the lines in the source file, which is assumed
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@ -645,75 +699,80 @@ find_source_lines (s, desc)
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int *line_charpos;
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long exec_mtime;
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int size;
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#ifdef LSEEK_NOT_LINEAR
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char c;
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#endif
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line_charpos = (int *) xmmalloc (s -> objfile -> md,
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lines_allocated * sizeof (int));
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if (fstat (desc, &st) < 0)
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perror_with_name (s->filename);
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perror_with_name (s->filename);
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if (exec_bfd) {
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exec_mtime = bfd_get_mtime(exec_bfd);
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if (exec_mtime && exec_mtime < st.st_mtime)
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printf_filtered ("Source file is more recent than executable.\n");
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}
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if (exec_bfd)
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{
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exec_mtime = bfd_get_mtime(exec_bfd);
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if (exec_mtime && exec_mtime < st.st_mtime)
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printf_filtered ("Source file is more recent than executable.\n");
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}
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#ifdef LSEEK_NOT_LINEAR
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/* Have to read it byte by byte to find out where the chars live */
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line_charpos[0] = tell(desc);
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nlines = 1;
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while (myread(desc, &c, 1)>0)
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{
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if (c == '\n')
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{
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if (nlines == lines_allocated)
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{
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lines_allocated *= 2;
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line_charpos =
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(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
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sizeof (int) * lines_allocated);
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}
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line_charpos[nlines++] = tell(desc);
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}
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}
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#else
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/* st_size might be a large type, but we only support source files whose
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size fits in an int. FIXME. */
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size = (int) st.st_size;
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#ifdef BROKEN_LARGE_ALLOCA
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data = (char *) xmalloc (size);
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make_cleanup (free, data);
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#else
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data = (char *) alloca (size);
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#endif
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if (myread (desc, data, size) < 0)
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perror_with_name (s->filename);
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end = data + size;
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p = data;
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line_charpos[0] = 0;
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nlines = 1;
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while (p != end)
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{
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if (*p++ == '\n'
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/* A newline at the end does not start a new line. */
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&& p != end)
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{
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if (nlines == lines_allocated)
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char c;
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/* Have to read it byte by byte to find out where the chars live */
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line_charpos[0] = tell(desc);
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nlines = 1;
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while (myread(desc, &c, 1)>0)
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{
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lines_allocated *= 2;
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line_charpos =
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(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
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sizeof (int) * lines_allocated);
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if (c == '\n')
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{
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if (nlines == lines_allocated)
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{
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lines_allocated *= 2;
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line_charpos =
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(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
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sizeof (int) * lines_allocated);
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}
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line_charpos[nlines++] = tell(desc);
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}
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}
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line_charpos[nlines++] = p - data;
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}
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}
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#endif
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#else /* lseek linear. */
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{
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struct cleanup *old_cleanups;
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/* st_size might be a large type, but we only support source files whose
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size fits in an int. */
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size = (int) st.st_size;
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/* Use malloc, not alloca, because this may be pretty large, and we may
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run into various kinds of limits on stack size. */
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data = (char *) xmalloc (size);
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old_cleanups = make_cleanup (free, data);
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if (myread (desc, data, size) < 0)
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perror_with_name (s->filename);
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end = data + size;
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p = data;
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line_charpos[0] = 0;
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nlines = 1;
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while (p != end)
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{
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if (*p++ == '\n'
|
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/* A newline at the end does not start a new line. */
|
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&& p != end)
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{
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if (nlines == lines_allocated)
|
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{
|
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lines_allocated *= 2;
|
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line_charpos =
|
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(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
|
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sizeof (int) * lines_allocated);
|
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}
|
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line_charpos[nlines++] = p - data;
|
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}
|
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}
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do_cleanups (old_cleanups);
|
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}
|
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#endif /* lseek linear. */
|
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s->nlines = nlines;
|
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s->line_charpos =
|
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(int *) xmrealloc (s -> objfile -> md, (char *) line_charpos,
|
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@ -895,13 +954,11 @@ print_source_lines (s, line, stopline, noerror)
|
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|
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|
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|
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/*
|
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C++
|
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Print a list of files and line numbers which a user may choose from
|
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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.
|
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*/
|
||||
/* 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
|
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ambiguous_line_spec (sals)
|
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struct symtabs_and_lines *sals;
|
||||
@ -913,7 +970,6 @@ ambiguous_line_spec (sals)
|
||||
sals->sals[i].symtab->filename, sals->sals[i].line);
|
||||
}
|
||||
|
||||
|
||||
static void
|
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list_command (arg, from_tty)
|
||||
char *arg;
|
||||
@ -1228,15 +1284,26 @@ forward_search_command (regex, from_tty)
|
||||
stream = fdopen (desc, FOPEN_RT);
|
||||
clearerr (stream);
|
||||
while (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;
|
||||
static char *buf = NULL;
|
||||
register char *p;
|
||||
int cursize, newsize;
|
||||
|
||||
cursize = 256;
|
||||
buf = xmalloc (cursize);
|
||||
p = buf;
|
||||
|
||||
c = getc (stream);
|
||||
if (c == EOF)
|
||||
break;
|
||||
do {
|
||||
*p++ = c;
|
||||
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 */
|
||||
@ -1245,8 +1312,7 @@ forward_search_command (regex, from_tty)
|
||||
{
|
||||
/* Match! */
|
||||
fclose (stream);
|
||||
print_source_lines (current_source_symtab,
|
||||
line, line+1, 0);
|
||||
print_source_lines (current_source_symtab, line, line+1, 0);
|
||||
current_source_line = max (line - lines_to_list / 2, 1);
|
||||
return;
|
||||
}
|
||||
@ -1367,6 +1433,9 @@ With no argument, reset the search path to $cdir:$cwd, the default.",
|
||||
add_info ("source", source_info,
|
||||
"Information about the current source file.");
|
||||
|
||||
/* start-sanitize-mpw */
|
||||
#ifndef MPW_C
|
||||
/* end-sanitize-mpw */
|
||||
add_info ("line", line_info,
|
||||
"Core addresses of the code for a source line.\n\
|
||||
Line can be specified as\n\
|
||||
@ -1378,6 +1447,17 @@ 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 \"$_\".");
|
||||
/* start-sanitize-mpw */
|
||||
#else
|
||||
add_info ("line", line_info,
|
||||
"Core addresses of the code for a source line. \n\
|
||||
Line can be specified as \n\
|
||||
LINENUM, to list around that line in current file, \n\
|
||||
FILE:LINENUM, to list around that line in that file, \n\
|
||||
Default is to describe the last source line that was listed. \n\n\
|
||||
The address is also stored as the value of \"$_\". ");
|
||||
#endif
|
||||
/* end-sanitize-mpw */
|
||||
|
||||
add_com ("forward-search", class_files, forward_search_command,
|
||||
"Search for regular expression (see regex(3)) from last line listed.");
|
||||
@ -1386,6 +1466,9 @@ The address is also stored as the value of \"$_\".");
|
||||
add_com ("reverse-search", class_files, reverse_search_command,
|
||||
"Search backward for regular expression (see regex(3)) from last line listed.");
|
||||
|
||||
/* start-sanitize-mpw */
|
||||
#ifndef MPW_C
|
||||
/* end-sanitize-mpw */
|
||||
add_com ("list", class_files, list_command,
|
||||
"List specified function or line.\n\
|
||||
With no argument, lists ten more lines after or around previous listing.\n\
|
||||
@ -1399,6 +1482,17 @@ Lines can be specified in these ways:\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.");
|
||||
/* start-sanitize-mpw */
|
||||
#else /* MPW_C */
|
||||
add_com ("list", class_files, list_command,
|
||||
"List specified function or line.\n\
|
||||
With no argument, lists ten more lines after or around previous 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\
|
||||
With two args if one is empty it stands for ten lines away from the other arg. ");
|
||||
#endif /* MPW_C */
|
||||
/* end-sanitize-mpw */
|
||||
add_com_alias ("l", "list", class_files, 1);
|
||||
|
||||
add_show_from_set
|
||||
|
||||
Loading…
Reference in New Issue
Block a user