X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsymtab.c;h=437576384ab6ba5265a48a938853f95a47972260;hb=2bc0a1288fbbffa1cf4065846939204e0efd13e1;hp=108ace764d61ac350ef87890f803759226df5aed;hpb=caadab2cfad7745956579147ce2d97254af33f1f;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/symtab.c b/gdb/symtab.c
index 108ace764d..437576384a 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -79,7 +79,7 @@ static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
 						     const char *, int,
 						     namespace_enum);
 
-static struct symtab *lookup_symtab_1 (char *);
+static struct symtab *lookup_symtab_1 (const char *);
 
 static struct symbol *lookup_symbol_aux (const char *name, const
 					 struct block *block, const
@@ -138,7 +138,7 @@ cplusplus_hint (char *name)
    in the symtab filename will also work.  */
 
 static struct symtab *
-lookup_symtab_1 (char *name)
+lookup_symtab_1 (const char *name)
 {
   register struct symtab *s;
   register struct partial_symtab *ps;
@@ -192,7 +192,7 @@ got_symtab:
    of variations if the first lookup doesn't work.  */
 
 struct symtab *
-lookup_symtab (char *name)
+lookup_symtab (const char *name)
 {
   register struct symtab *s;
 #if 0
@@ -229,7 +229,7 @@ lookup_symtab (char *name)
    in the psymtab filename will also work.  */
 
 struct partial_symtab *
-lookup_partial_symtab (char *name)
+lookup_partial_symtab (const char *name)
 {
   register struct partial_symtab *pst;
   register struct objfile *objfile;
@@ -2153,50 +2153,72 @@ operator_chars (char *p, char **end)
 }
 
 
-/* Slave routine for sources_info.  Force line breaks at ,'s.
-   NAME is the name to print and *FIRST is nonzero if this is the first
-   name printed.  Set *FIRST to zero.  */
-static void
-output_source_filename (char *name, int *first)
+/* If FILE is not already in the table of files, return zero;
+   otherwise return non-zero.  Optionally add FILE to the table if ADD
+   is non-zero.  If *FIRST is non-zero, forget the old table
+   contents.  */
+static int
+filename_seen (const char *file, int add, int *first)
 {
-  /* Table of files printed so far.  Since a single source file can
-     result in several partial symbol tables, we need to avoid printing
-     it more than once.  Note: if some of the psymtabs are read in and
-     some are not, it gets printed both under "Source files for which
-     symbols have been read" and "Source files for which symbols will
-     be read in on demand".  I consider this a reasonable way to deal
-     with the situation.  I'm not sure whether this can also happen for
-     symtabs; it doesn't hurt to check.  */
-  static char **tab = NULL;
+  /* Table of files seen so far.  */
+  static const char **tab = NULL;
   /* Allocated size of tab in elements.
      Start with one 256-byte block (when using GNU malloc.c).
      24 is the malloc overhead when range checking is in effect.  */
   static int tab_alloc_size = (256 - 24) / sizeof (char *);
   /* Current size of tab in elements.  */
   static int tab_cur_size;
-
-  char **p;
+  const char **p;
 
   if (*first)
     {
       if (tab == NULL)
-	tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab));
+	tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
       tab_cur_size = 0;
     }
 
-  /* Is NAME in tab?  */
+  /* Is FILE in tab?  */
   for (p = tab; p < tab + tab_cur_size; p++)
-    if (STREQ (*p, name))
-      /* Yes; don't print it again.  */
-      return;
-  /* No; add it to tab.  */
-  if (tab_cur_size == tab_alloc_size)
+    if (strcmp (*p, file) == 0)
+      return 1;
+
+  /* No; maybe add it to tab.  */
+  if (add)
     {
-      tab_alloc_size *= 2;
-      tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab));
+      if (tab_cur_size == tab_alloc_size)
+	{
+	  tab_alloc_size *= 2;
+	  tab = (const char **) xrealloc ((char *) tab,
+					  tab_alloc_size * sizeof (*tab));
+	}
+      tab[tab_cur_size++] = file;
     }
-  tab[tab_cur_size++] = name;
 
+  return 0;
+}
+
+/* Slave routine for sources_info.  Force line breaks at ,'s.
+   NAME is the name to print and *FIRST is nonzero if this is the first
+   name printed.  Set *FIRST to zero.  */
+static void
+output_source_filename (char *name, int *first)
+{
+  /* Since a single source file can result in several partial symbol
+     tables, we need to avoid printing it more than once.  Note: if
+     some of the psymtabs are read in and some are not, it gets
+     printed both under "Source files for which symbols have been
+     read" and "Source files for which symbols will be read in on
+     demand".  I consider this a reasonable way to deal with the
+     situation.  I'm not sure whether this can also happen for
+     symtabs; it doesn't hurt to check.  */
+
+  /* Was NAME already seen?  */
+  if (filename_seen (name, 1, first))
+    {
+      /* Yes; don't print it again.  */
+      return;
+    }
+  /* No; print it and reset *FIRST.  */
   if (*first)
     {
       *first = 0;
@@ -2871,9 +2893,9 @@ completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
   }
 }
 
-/* Return a NULL terminated array of all symbols (regardless of class) which
-   begin by matching TEXT.  If the answer is no symbols, then the return value
-   is an array which contains only a NULL pointer.
+/* Return a NULL terminated array of all symbols (regardless of class)
+   which begin by matching TEXT.  If the answer is no symbols, then
+   the return value is an array which contains only a NULL pointer.
 
    Problem: All of the symbols have to be copied because readline frees them.
    I'm not going to worry about this; hopefully there won't be that many.  */
@@ -2927,7 +2949,11 @@ make_symbol_completion_list (char *text, char *word)
     else if (quote_found == '"')
       /* A double-quoted string is never a symbol, nor does it make sense
          to complete it any other way.  */
-      return NULL;
+      {
+	return_val = (char **) xmalloc (sizeof (char *));
+	return_val[0] = NULL;
+	return return_val;
+      }
     else
       {
 	/* It is not a quoted string.  Break it based on the characters
@@ -3059,6 +3085,277 @@ make_symbol_completion_list (char *text, char *word)
   return (return_val);
 }
 
+/* Like make_symbol_completion_list, but returns a list of symbols
+   defined in a source file FILE.  */
+
+char **
+make_file_symbol_completion_list (char *text, char *word, char *srcfile)
+{
+  register struct symbol *sym;
+  register struct symtab *s;
+  register struct block *b;
+  register int i;
+  /* The symbol we are completing on.  Points in same buffer as text.  */
+  char *sym_text;
+  /* Length of sym_text.  */
+  int sym_text_len;
+
+  /* Now look for the symbol we are supposed to complete on.
+     FIXME: This should be language-specific.  */
+  {
+    char *p;
+    char quote_found;
+    char *quote_pos = NULL;
+
+    /* First see if this is a quoted string.  */
+    quote_found = '\0';
+    for (p = text; *p != '\0'; ++p)
+      {
+	if (quote_found != '\0')
+	  {
+	    if (*p == quote_found)
+	      /* Found close quote.  */
+	      quote_found = '\0';
+	    else if (*p == '\\' && p[1] == quote_found)
+	      /* A backslash followed by the quote character
+	         doesn't end the string.  */
+	      ++p;
+	  }
+	else if (*p == '\'' || *p == '"')
+	  {
+	    quote_found = *p;
+	    quote_pos = p;
+	  }
+      }
+    if (quote_found == '\'')
+      /* A string within single quotes can be a symbol, so complete on it.  */
+      sym_text = quote_pos + 1;
+    else if (quote_found == '"')
+      /* A double-quoted string is never a symbol, nor does it make sense
+         to complete it any other way.  */
+      {
+	return_val = (char **) xmalloc (sizeof (char *));
+	return_val[0] = NULL;
+	return return_val;
+      }
+    else
+      {
+	/* It is not a quoted string.  Break it based on the characters
+	   which are in symbols.  */
+	while (p > text)
+	  {
+	    if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
+	      --p;
+	    else
+	      break;
+	  }
+	sym_text = p;
+      }
+  }
+
+  sym_text_len = strlen (sym_text);
+
+  return_val_size = 10;
+  return_val_index = 0;
+  return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
+  return_val[0] = NULL;
+
+  /* Find the symtab for SRCFILE (this loads it if it was not yet read
+     in).  */
+  s = lookup_symtab (srcfile);
+  if (s == NULL)
+    {
+      /* Maybe they typed the file with leading directories, while the
+	 symbol tables record only its basename.  */
+      char *tail = basename (srcfile);
+
+      if (tail > srcfile)
+	s = lookup_symtab (tail);
+    }
+
+  /* If we have no symtab for that file, return an empty list.  */
+  if (s == NULL)
+    return (return_val);
+
+  /* Go through this symtab and check the externs and statics for
+     symbols which match.  */
+
+  b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
+  for (i = 0; i < BLOCK_NSYMS (b); i++)
+    {
+      sym = BLOCK_SYM (b, i);
+      COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
+    }
+
+  b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
+  for (i = 0; i < BLOCK_NSYMS (b); i++)
+    {
+      sym = BLOCK_SYM (b, i);
+      COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
+    }
+
+  return (return_val);
+}
+
+/* A helper function for make_source_files_completion_list.  It adds
+   another file name to a list of possible completions, growing the
+   list as necessary.  */
+
+static void
+add_filename_to_list (const char *fname, char *text, char *word,
+		      char ***list, int *list_used, int *list_alloced)
+{
+  char *new;
+  size_t fnlen = strlen (fname);
+
+  if (*list_used + 1 >= *list_alloced)
+    {
+      *list_alloced *= 2;
+      *list = (char **) xrealloc ((char *) *list,
+				  *list_alloced * sizeof (char *));
+    }
+
+  if (word == text)
+    {
+      /* Return exactly fname.  */
+      new = xmalloc (fnlen + 5);
+      strcpy (new, fname);
+    }
+  else if (word > text)
+    {
+      /* Return some portion of fname.  */
+      new = xmalloc (fnlen + 5);
+      strcpy (new, fname + (word - text));
+    }
+  else
+    {
+      /* Return some of TEXT plus fname.  */
+      new = xmalloc (fnlen + (text - word) + 5);
+      strncpy (new, word, text - word);
+      new[text - word] = '\0';
+      strcat (new, fname);
+    }
+  (*list)[*list_used] = new;
+  (*list)[++*list_used] = NULL;
+}
+
+static int
+not_interesting_fname (const char *fname)
+{
+  static const char *illegal_aliens[] = {
+    "_globals_",	/* inserted by coff_symtab_read */
+    NULL
+  };
+  int i;
+
+  for (i = 0; illegal_aliens[i]; i++)
+    {
+      if (strcmp (fname, illegal_aliens[i]) == 0)
+	return 1;
+    }
+  return 0;
+}
+
+/* Return a NULL terminated array of all source files whose names
+   begin with matching TEXT.  The file names are looked up in the
+   symbol tables of this program.  If the answer is no matchess, then
+   the return value is an array which contains only a NULL pointer.  */
+
+char **
+make_source_files_completion_list (char *text, char *word)
+{
+  register struct symtab *s;
+  register struct partial_symtab *ps;
+  register struct objfile *objfile;
+  int first = 1;
+  int list_alloced = 1;
+  int list_used = 0;
+  size_t text_len = strlen (text);
+  char **list = (char **) xmalloc (list_alloced * sizeof (char *));
+  char *base_name;
+
+  list[0] = NULL;
+
+  if (!have_full_symbols () && !have_partial_symbols ())
+    return list;
+
+  ALL_SYMTABS (objfile, s)
+    {
+      if (not_interesting_fname (s->filename))
+	continue;
+      if (!filename_seen (s->filename, 1, &first)
+#if HAVE_DOS_BASED_FILE_SYSTEM
+	  && strncasecmp (s->filename, text, text_len) == 0
+#else
+	  && strncmp (s->filename, text, text_len) == 0
+#endif
+	  )
+	{
+	  /* This file matches for a completion; add it to the current
+	     list of matches.  */
+	  add_filename_to_list (s->filename, text, word,
+				&list, &list_used, &list_alloced);
+	}
+      else
+	{
+	  /* NOTE: We allow the user to type a base name when the
+	     debug info records leading directories, but not the other
+	     way around.  This is what subroutines of breakpoint
+	     command do when they parse file names.  */
+	  base_name = basename (s->filename);
+	  if (base_name != s->filename
+	      && !filename_seen (base_name, 1, &first)
+#if HAVE_DOS_BASED_FILE_SYSTEM
+	      && strncasecmp (base_name, text, text_len) == 0
+#else
+	      && strncmp (base_name, text, text_len) == 0
+#endif
+	      )
+	    add_filename_to_list (base_name, text, word,
+				  &list, &list_used, &list_alloced);
+	}
+    }
+
+  ALL_PSYMTABS (objfile, ps)
+    {
+      if (not_interesting_fname (ps->filename))
+	continue;
+      if (!ps->readin)
+	{
+	  if (!filename_seen (ps->filename, 1, &first)
+#if HAVE_DOS_BASED_FILE_SYSTEM
+	      && strncasecmp (ps->filename, text, text_len) == 0
+#else
+	      && strncmp (ps->filename, text, text_len) == 0
+#endif
+	      )
+	    {
+	      /* This file matches for a completion; add it to the
+		 current list of matches.  */
+	      add_filename_to_list (ps->filename, text, word,
+				    &list, &list_used, &list_alloced);
+
+	    }
+	  else
+	    {
+	      base_name = basename (ps->filename);
+	      if (base_name != ps->filename
+		  && !filename_seen (base_name, 1, &first)
+#if HAVE_DOS_BASED_FILE_SYSTEM
+		  && strncasecmp (base_name, text, text_len) == 0
+#else
+		  && strncmp (base_name, text, text_len) == 0
+#endif
+		  )
+		add_filename_to_list (base_name, text, word,
+				      &list, &list_used, &list_alloced);
+	    }
+	}
+    }
+
+  return list;
+}
+
 /* Determine if PC is in the prologue of a function.  The prologue is the area
    between the first instruction of a function, and the first executable line.
    Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.