Initial creation of sourceware repository

1 files changed, 0 insertions, 1538 deletions

diff --git a/gdb/source.c b/gdb/source.c
deleted file mode 100644
index 997cd1d..0000000
--- a/gdb/source.c
+++ /dev/null
@@ -1,1538 +0,0 @@
-/* List lines of source files for GDB, the GNU debugger.
-   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 "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.  */
-
-char *source_path;
-
-/* Symtab of default file for listing lines of.  */
-
-struct symtab *current_source_symtab;
-
-/* Default next line to list.  */
-
-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 last_line_listed;
-
-/* First line number listed by last listing command.  */
-
-static int first_line_listed;
-
-
-/* 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)
-    {
-      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, 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)
-	{
-	  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;
-
-  /* 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 = ps -> filename;
-	  int len = strlen (name);
-	  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);
-	}
-    }
-  if (current_source_symtab)
-    return;
-
-  error ("Can't find a default source file");
-}
-
-static void
-show_directories (ignore, from_tty)
-     char *ignore;
-     int from_tty;
-{
-  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
-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;
-	    }
-	}
-    }
-}
-
-void
-init_source_path ()
-{
-  char buf[20];
-
-  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;
-{
-  dont_repeat ();
-  /* FIXME, this goes to "delete dir"... */
-  if (dirname == 0)
-    {
-      if (query ("Reinitialize source path to empty? "))
-	{
-	  free (source_path);
-	  init_source_path ();
-	}
-    }
-  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;
-
-      {
-	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;
-	  }
-      }
-
-#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 (p - name == 1)
-	    {
-	      /* "." => getwd ().  */
-	      name = current_directory;
-	      goto append;
-	    }
-	  else if (SLASH_P (p[-2]))
-	    {
-	      if (p - name == 2)
-		{
-		  /* "/." => "/".  */
-		  *--p = '\0';
-		  goto append;
-		}
-	      else
-		{
-		  /* "...foo/." => "...foo".  */
-		  p -= 2;
-		  *p = '\0';
-		  continue;
-		}
-	    }
-	  else
-	    break;
-	}
-
-      if (name[0] == '~')
-	name = tilde_expand (name);
-      else if (!ROOTED_P (name) && name[0] != '$') 
-	  name = concat (current_directory, SLASH_STRING, name, NULL);
-      else
-	name = savestring (name, p - name);
-      make_cleanup (free, name);
-
-      /* Unless it's a variable, check existence.  */
-      if (name[0] != '$') {
-	/* 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:
-      {
-	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 (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);
-}
-
-
-
-/* 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 ".").  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 "/".  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.  */
-
-/*  >>>> This should only allow files of certain types,
-    >>>>  eg executable, non-directory */
-int
-openp (path, try_cwd_first, string, mode, prot, filename_opened)
-     char *path;
-     int try_cwd_first;
-     char *string;
-     int mode;
-     int prot;
-     char **filename_opened;
-{
-  register int fd;
-  register char *filename;
-  register char *p, *p1;
-  register int len;
-  int alloclen;
-
-  if (!path)
-    path = ".";
-
-#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)
-	goto done;
-      for (i = 0; string[i]; i++)
-	if (SLASH_P (string[i]))
-	  goto done;
-    }
-
-  /* ./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 *) strchr (p, DIRNAME_SEPARATOR);
-      if (p1)
-	len = p1 - p;
-      else
-	len = strlen (p);
-
-      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);
-      if (fd >= 0) break;
-    }
-
- done:
-  if (filename_opened)
-    {
-      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)
-      {
-	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;
-}
-
-
-/* Create and initialize the table S->line_charpos that records
-   the positions of the lines in the source file, which is assumed
-   to be open on descriptor DESC.
-   All set S->nlines to the number of such lines.  */
-
-static void
-find_source_lines (s, desc)
-     struct symtab *s;
-     int desc;
-{
-  struct stat st;
-  register char *data, *p, *end;
-  int nlines = 0;
-  int lines_allocated = 1000;
-  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 *) 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;
-     int line;
-{
-  if (!s) return 0;
-  if (!s->line_charpos || line <= 0) return 0;
-  if (line > s->nlines)
-    line = s->nlines;
-  return s->line_charpos[line - 1];
-}
-
-/* Return the line number of character position POS in symtab S.  */
-
-int
-source_charpos_line (s, chr)
-    register struct symtab *s;
-    register int chr;
-{
-  register int line = 0;
-  register int *lnp;
-    
-  if (s == 0 || s->line_charpos == 0) return 0;
-  lnp = s->line_charpos;
-  /* Files are usually short, so sequential search is Ok */
-  while (line < s->nlines  && *lnp <= chr)
-    {
-      line++;
-      lnp++;
-    }
-  if (line >= s->nlines)
-    line = s->nlines;
-  return line;
-}
-
-#endif	/* 0 */
-
-
-/* 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.  */
-
-static int
-get_filename_and_charpos (s, fullname)
-     struct symtab *s;
-     char **fullname;
-{
-  register int desc, linenums_changed = 0;
-  
-  desc = open_source_file (s);
-  if (desc < 0)
-    {
-      if (fullname)
-	*fullname = NULL;
-      return 0;
-    }  
-  if (fullname)
-    *fullname = s->fullname;
-  if (s->line_charpos == 0) linenums_changed = 1;
-  if (linenums_changed) find_source_lines (s, desc);
-  close (desc);
-  return linenums_changed;
-}
-
-/* Print text describing the full name of the source file S
-   and the line number LINE and its corresponding character position.
-   The text starts with two Ctrl-z so that the Emacs-GDB interface
-   can easily find it.
-
-   MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
-
-   Return 1 if successful, 0 if could not find the file.  */
-
-int
-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, (char **)NULL);
-  if (s->fullname == 0)
-    return 0;
-  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;
-  current_source_symtab = s;
-  return 1;
-}
-
-/* Print source lines from the file of symtab S,
-   starting with line number LINE and stopping before line number STOPLINE.  */
-
-void
-print_source_lines (s, line, stopline, noerror)
-     struct symtab *s;
-     int line, stopline;
-     int noerror;
-{
-  register int c;
-  register int desc;
-  register FILE *stream;
-  int nlines = stopline - line;
-
-  /* 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)
-    {
-      if (! noerror) {
-	char *name = alloca (strlen (s->filename) + 100);
-	sprintf (name, "%s:%d", s->filename, line);
-        print_sys_errmsg (name, errno);
-      }
-      return;
-    }
-
-  if (s->line_charpos == 0)
-    find_source_lines (s, desc);
-
-  if (line < 1 || line > s->nlines)
-    {
-      close (desc);
-      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)
-    {
-      close (desc);
-      perror_with_name (s->filename);
-    }
-
-  stream = fdopen (desc, FDOPEN_MODE);
-  clearerr (stream);
-
-  while (nlines-- > 0)
-    {
-      c = fgetc (stream);
-      if (c == EOF) break;
-      last_line_listed = current_source_line;
-      printf_filtered ("%d\t", current_source_line++);
-      do
-	{
-	  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')
-	    {
-	      /* Just skip \r characters.  */
-	    }
-#endif
-	  else
-	    printf_filtered ("%c", c);
-	} while (c != '\n' && (c = fgetc (stream)) >= 0);
-    }
-
-  fclose (stream);
-}
-
-
-
-/* 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 from_tty;
-{
-  struct symtabs_and_lines sals, sals_end;
-  struct symtab_and_line sal, sal_end;
-  struct symbol *sym;
-  char *arg1;
-  int no_end = 1;
-  int dummy_end = 0;
-  int dummy_beg = 0;
-  int linenum_beg = 0;
-  char *p;
-
-  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 || 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 + lines_to_list, 0);
-      return;
-    }
-
-  /* "l -" lists previous ten lines, the ones before the ten just listed.  */
-  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 - lines_to_list, 1),
-			  first_line_listed, 0);
-      return;
-    }
-
-  /* Now if there is only one argument, decode it in SAL
-     and set NO_END.
-     If there are two arguments, decode them in SAL and SAL_END
-     and clear NO_END; however, if one of the arguments is blank,
-     set DUMMY_BEG or DUMMY_END to record that fact.  */
-
-  arg1 = arg;
-  if (*arg1 == ',')
-    dummy_beg = 1;
-  else
-    {
-      sals = decode_line_1 (&arg1, 0, 0, 0, 0);
-
-      if (! sals.nelts) return;  /*  C++  */
-      if (sals.nelts > 1)
-	{
-	  ambiguous_line_spec (&sals);
-	  free (sals.sals);
-	  return;
-	}
-
-      sal = sals.sals[0];
-      free (sals.sals);
-    }
-
-  /* Record whether the BEG arg is all digits.  */
-
-  for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
-  linenum_beg = (p == arg1);
-
-  while (*arg1 == ' ' || *arg1 == '\t')
-    arg1++;
-  if (*arg1 == ',')
-    {
-      no_end = 0;
-      arg1++;
-      while (*arg1 == ' ' || *arg1 == '\t')
-	arg1++;
-      if (*arg1 == 0)
-	dummy_end = 1;
-      else
-	{
-	  if (dummy_beg)
-	    sals_end = decode_line_1 (&arg1, 0, 0, 0, 0);
-	  else
-	    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 (*arg1)
-    error ("Junk at end of line specification.");
-
-  if (!no_end && !dummy_beg && !dummy_end
-      && sal.symtab != sal_end.symtab)
-    error ("Specified start and end are in different files.");
-  if (dummy_beg && dummy_end)
-    error ("Two empty args do not say what lines to list.");
- 
-  /* if line was specified by address,
-     first print exactly which line, and which file.
-     In this case, sal.symtab == 0 means address is outside
-     of all known source files, not that user failed to give a filename.  */
-  if (*arg == '*')
-    {
-      if (sal.symtab == 0)
-	/* 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)
-	{
-	  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
-	{
-	  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,
-     and it does not imply a symtab, it must be an undebuggable symbol
-     which means no source code.  */
-
-  if (! linenum_beg && sal.symtab == 0)
-    error ("No line number known for %s.", arg);
-
-  /* If this command is repeated with RET,
-     turn it into the no-arg variant.  */
-
-  if (from_tty)
-    *arg = 0;
-
-  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 - (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 - (lines_to_list / 2), 1),
-			sal.line + (lines_to_list / 2), 0);
-  else
-    print_source_lines (sal.symtab, sal.line,
-			(dummy_end
-			 ? sal.line + lines_to_list
-			 : sal_end.line + 1),
-			0);
-}
-
-/* Print info on range of pc's in a specified line.  */
-
-static void
-line_info (arg, from_tty)
-     char *arg;
-     int from_tty;
-{
-  struct symtabs_and_lines sals;
-  struct symtab_and_line sal;
-  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_1 (arg, 0);
-      
-      dont_repeat ();
-    }
-
-  /* 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++)
-    {
-      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
-	/* 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);
-    }
-  free (sals.sals);
-}
-
-/* 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;
-  register FILE *stream;
-  int line = last_line_listed + 1;
-  char *msg;
-
-  msg = (char *) re_comp (regex);
-  if (msg)
-    error (msg);
-
-  if (current_source_symtab == 0)
-    select_source_symtab (0);
-
-  /* Search from last_line_listed+1 in current_source_symtab */
-
-  desc = open_source_file (current_source_symtab);
-  if (desc < 0)
-    perror_with_name (current_source_symtab->filename);
-
-  if (current_source_symtab->line_charpos == 0)
-    find_source_lines (current_source_symtab, desc);
-
-  if (line < 1 || line > current_source_symtab->nlines)
-    {
-      close (desc);
-      error ("Expression not found");
-    }
-
-  if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
-    {
-      close (desc);
-      perror_with_name (current_source_symtab->filename);
-    }
-
-  stream = fdopen (desc, FDOPEN_MODE);
-  clearerr (stream);
-  while (1) {
-    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 */
-    *p = 0;
-    if (re_exec (buf) > 0)
-      {
-	/* Match! */
-	fclose (stream);
-	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_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;
-  register FILE *stream;
-  int line = last_line_listed - 1;
-  char *msg;
-
-  msg = (char *) re_comp (regex);
-  if (msg)
-    error (msg);
-
-  if (current_source_symtab == 0)
-    select_source_symtab (0);
-
-  /* Search from last_line_listed-1 in current_source_symtab */
-
-  desc = open_source_file (current_source_symtab);
-  if (desc < 0)
-    perror_with_name (current_source_symtab->filename);
-
-  if (current_source_symtab->line_charpos == 0)
-    find_source_lines (current_source_symtab, desc);
-
-  if (line < 1 || line > current_source_symtab->nlines)
-    {
-      close (desc);
-      error ("Expression not found");
-    }
-
-  if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
-    {
-      close (desc);
-      perror_with_name (current_source_symtab->filename);
-    }
-
-  stream = fdopen (desc, FDOPEN_MODE);
-  clearerr (stream);
-  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 = getc (stream);
-      if (c == EOF)
-	break;
-      do {
-	*p++ = c;
-      } while (c != '\n' && (c = getc (stream)) >= 0);
-
-      /* We now have a source line in buf; null terminate and match.  */
-      *p = 0;
-      if (re_exec (buf) > 0)
-	{
-	  /* Match! */
-	  fclose (stream);
-	  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--;
-      if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0)
-	{
-	  fclose (stream);
-	  perror_with_name (current_source_symtab->filename);
-	}
-    }
-
-  printf_filtered ("Expression not found\n");
-  fclose (stream);
-  return;
-}
-
-void
-_initialize_source ()
-{
-  struct cmd_list_element *c;
-  current_source_symtab = 0;
-  init_source_path ();
-
-  /* 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,
-	    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 \"$_\".", NULL));
-
-  add_com ("forward-search", class_files, forward_search_command,
-	   "Search for regular expression (see regex(3)) from last line listed.\n\
-The matching line number is also stored as the value of \"$_\".");
-  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.\n\
-The matching line number is also stored as the value of \"$_\".");
-
-  add_com ("list", class_files, list_command,
-	   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.", NULL));
-
-  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);
-}