* coffread.c, dbxread.c, elfread.c, mipsread.c, nlmread.c,

os9kread.c: Replace identical sym_offsets functions with
	default_symfile_offsets.
	* somread.c (som_symfile_offsets): Use new SIZEOF_SECTION_OFFSETS
	macro to allocate section_offsets.
	* symfile.c (default_symfile_offsets): New function.
	* symfile.h: Declare default_symfile_offsets.
	* symtab.h: Define SIZEOF_SECTION_OFFSETS macro to
	simplify allocation of section_offsets.

gdb/coffread.c

@@ -1,5 +1,5 @@
 /* Read coff symbol tables and convert to internal format, for GDB.
-   Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
+   Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996
              Free Software Foundation, Inc.
    Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu).
 
@@ -17,7 +17,7 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "defs.h"
 #include "symtab.h"
@@ -25,7 +25,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include "breakpoint.h"
 
 #include "bfd.h"
-#include <obstack.h>
+#include "obstack.h"
 
 #include "gdb_string.h"
 #include <ctype.h>
@@ -139,6 +139,12 @@ static struct symbol *opaque_type_chain[HASHSIZE];
 struct complaint ef_complaint = 
   {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0};
 
+struct complaint ef_stack_complaint = 
+  {"`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d", 0, 0};
+
+struct complaint eb_stack_complaint = 
+  {"`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d", 0, 0};
+
 struct complaint bf_no_aux_complaint =
   {"`.bf' symbol %d has no aux entry", 0, 0};
 
@@ -510,9 +516,7 @@ coff_end_symtab (objfile)
   subfiles->line_vector = line_vector;
   subfiles->name = last_source_file;
 
-  /* sort_pending is needed for amdcoff, at least.
-     sort_linevec is needed for the SCO compiler.  */
-  symtab = end_symtab (current_source_end_addr, 1, 1, objfile, 0);
+  symtab = end_symtab (current_source_end_addr, objfile, 0);
 
   if (symtab != NULL)
     free_named_symtabs (symtab->filename);
@@ -568,6 +572,11 @@ coff_symfile_init (objfile)
 
   memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info));
 
+  /* COFF objects may be reordered, so set OBJF_REORDERED.  If we
+     find this causes a significant slowdown in gdb then we could
+     set it in the debug symbol readers only when necessary.  */
+  objfile->flags |= OBJF_REORDERED;
+
   init_entry_point_info (objfile);
 }
 
@@ -892,6 +901,10 @@ coff_symtab_read (symtab_offset, nsyms, section_offsets, objfile)
 	    in_source_file = 1;
 	    break;
 
+	  /* C_LABEL is used for labels and static functions.  Including
+	     it here allows gdb to see static functions when no debug
+	     info is available.  */
+	  case C_LABEL:
           case C_STAT:
 	    if (cs->c_name[0] == '.')
 	      {
@@ -1029,6 +1042,14 @@ coff_symtab_read (symtab_offset, nsyms, section_offsets, objfile)
 		   not useful for gdb.  */
 		/* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
 			    contains number of lines to '}' */
+
+		if (context_stack_depth <= 0)
+		  {		/* We attempted to pop an empty context stack */
+		    complain (&ef_stack_complaint, cs->c_symnum);
+		    within_function = 0;
+		    break;
+		  }
+
 		new = pop_context ();
 		/* Stack must be empty now.  */
 		if (context_stack_depth > 0 || new == NULL)
@@ -1082,6 +1103,12 @@ coff_symtab_read (symtab_offset, nsyms, section_offsets, objfile)
 	      }
 	    else if (STREQ (cs->c_name, ".eb"))
 	      {
+		if (context_stack_depth <= 0)
+		  {		/* We attempted to pop an empty context stack */
+		    complain (&eb_stack_complaint, cs->c_symnum);
+		    break;
+		  }
+
 		new = pop_context ();
 		if (depth-- != new->depth)
 		  {
@@ -1182,7 +1209,7 @@ init_stringtab (abfd, offset)
 
   val = bfd_read ((char *)lengthbuf, sizeof lengthbuf, 1, abfd);
   length = bfd_h_get_32 (symfile_bfd, lengthbuf);
-
+       
   /* If no string table is needed, then the file may end immediately
      after the symbols.  Just return with `stringtab' set to null. */
   if (val != sizeof lengthbuf || length < sizeof lengthbuf)
@@ -1802,6 +1829,9 @@ decode_base_type (cs, c_type, aux)
       case T_DOUBLE:
 	return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT);
 
+      case T_LNGDBL:
+	return lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT);
+
       case T_STRUCT:
 	if (cs->c_naux != 1)
 	  {
@@ -2098,26 +2128,6 @@ coff_read_enum_type (index, length, lastsym)
   return type;
 }
 
-struct section_offsets *
-coff_symfile_offsets (objfile, addr)
-     struct objfile *objfile;
-     CORE_ADDR addr;
-{
-  struct section_offsets *section_offsets;
-  int i;
-
-  objfile->num_sections = SECT_OFF_MAX;
-  section_offsets = (struct section_offsets *)
-    obstack_alloc (&objfile -> psymbol_obstack,
-		   sizeof (struct section_offsets)
-		   + sizeof (section_offsets->offsets) * SECT_OFF_MAX);
-
-  for (i = 0; i < SECT_OFF_MAX; i++)
-    ANOFFSET (section_offsets, i) = addr;
-  
-  return section_offsets;
-}
-
 /* Register our ability to parse symbols for coff BFD files. */
 
 static struct sym_fns coff_sym_fns =
@@ -2127,7 +2137,8 @@ static struct sym_fns coff_sym_fns =
   coff_symfile_init,	/* sym_init: read initial info, setup for sym_read() */
   coff_symfile_read,	/* sym_read: read a symbol file into symtab */
   coff_symfile_finish,	/* sym_finish: finished with file, cleanup */
-  coff_symfile_offsets, /* sym_offsets:  xlate external to internal form */
+  default_symfile_offsets,
+			/* sym_offsets:  xlate external to internal form */
   NULL			/* next: pointer to next struct sym_fns */
 };