2004-11-18  Andrew Cagney  <cagney@gnu.org>

        * dwarf2read.c: Include "top.c".

        (dwarf2_has_info): Check for readnever_symbol_files.

        * symfile.c (readnever_symbol_files): Define.

        * top.h (readnever_symbol_files): Declare.

        * main.c (captured_main): Add --readnever option.

        (print_gdb_help): Ditto.

2004-11-18  Andrew Cagney  <cagney@gnu.org>

        * gdb.texinfo (File Options): Document --readnever.

Index: gdb-7.1.90.20100721/gdb/doc/gdb.texinfo

===================================================================

--- gdb-7.1.90.20100721.orig/gdb/doc/gdb.texinfo	2010-07-23 20:58:52.000000000 +0200

+++ gdb-7.1.90.20100721/gdb/doc/gdb.texinfo	2010-07-23 20:59:15.000000000 +0200

@@ -998,6 +998,12 @@ Read each symbol file's entire symbol ta

 the default, which is to read it incrementally as it is needed.

 This makes startup slower, but makes future operations faster.

+@item --readnever

+@cindex @code{--readnever}

+Do not read each symbol file's symbolic debug information.  This makes

+startup faster but at the expense of not being able to perform

+symbolic debugging.

+

 @end table

 @node Mode Options

Index: gdb-7.1.90.20100721/gdb/main.c

===================================================================

--- gdb-7.1.90.20100721.orig/gdb/main.c	2010-07-23 20:58:55.000000000 +0200

+++ gdb-7.1.90.20100721/gdb/main.c	2010-07-23 20:59:15.000000000 +0200

@@ -391,6 +391,7 @@ captured_main (void *data)

       {"xdb", no_argument, &xdb_commands, 1},

       {"dbx", no_argument, &dbx_commands, 1},

       {"readnow", no_argument, &readnow_symbol_files, 1},

+      {"readnever", no_argument, &readnever_symbol_files, 1},

       {"r", no_argument, &readnow_symbol_files, 1},

       {"quiet", no_argument, &quiet, 1},

       {"q", no_argument, &quiet, 1},

@@ -1038,6 +1039,7 @@ Options:\n\n\

   fputs_unfiltered (_("\

   --quiet            Do not print version number on startup.\n\

   --readnow          Fully read symbol files on first access.\n\

+  --readnever        Do not read symbol files.\n\

 "), stream);

   fputs_unfiltered (_("\

   --se=FILE          Use FILE as symbol file and executable file.\n\

Index: gdb-7.1.90.20100721/gdb/symfile.c

===================================================================

--- gdb-7.1.90.20100721.orig/gdb/symfile.c	2010-07-23 20:58:52.000000000 +0200

+++ gdb-7.1.90.20100721/gdb/symfile.c	2010-07-23 20:59:15.000000000 +0200

@@ -80,6 +80,7 @@ static void clear_symtab_users_cleanup (

 /* Global variables owned by this file */

 int readnow_symbol_files;	/* Read full symbols immediately */

+int readnever_symbol_files;	/* Never read full symbols.  */

 /* External variables and functions referenced. */

Index: gdb-7.1.90.20100721/gdb/dwarf2read.c

===================================================================

--- gdb-7.1.90.20100721.orig/gdb/dwarf2read.c	2010-07-23 20:58:53.000000000 +0200

+++ gdb-7.1.90.20100721/gdb/dwarf2read.c	2010-07-23 20:59:26.000000000 +0200

@@ -54,6 +54,7 @@

 #include "exceptions.h"

 #include "gdb_stat.h"

 #include "completer.h"

+#include "top.h"

 #include <fcntl.h>

 #include "gdb_string.h"

@@ -1283,8 +1284,9 @@ dwarf2_has_info (struct objfile *objfile

       bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL);

       dwarf2_per_objfile->objfile = objfile;

     }

-  return (dwarf2_per_objfile->info.asection != NULL

-	  && dwarf2_per_objfile->abbrev.asection != NULL);

+  return (! readnever_symbol_files

+	  && (dwarf2_per_objfile->info.asection != NULL

+	      && dwarf2_per_objfile->abbrev.asection != NULL));

 }

 /* When loading sections, we can either look for ".<name>", or for

Index: gdb-7.1.90.20100721/gdb/top.h

===================================================================

--- gdb-7.1.90.20100721.orig/gdb/top.h	2010-04-07 18:54:39.000000000 +0200

+++ gdb-7.1.90.20100721/gdb/top.h	2010-07-23 20:59:15.000000000 +0200

@@ -61,6 +61,7 @@ extern void set_prompt (char *);

 /* From random places.  */

 extern int readnow_symbol_files;

+extern int readnever_symbol_files;

 /* Perform _initialize initialization */

 extern void gdb_init (char *);