[PATCH] fix symbol reading for separate debug info

[Elena Zannoni <ezannoni@redhat.com>]

This fixes the problem reported by Nick in:
http://sources.redhat.com/ml/gdb-patches/2003-06/msg00409.html

The binutils support for the separate debug info file can now be used. I
think Nick has a couple of fixes for objcopy to check in.


Ah, to generate the separate debug files I did:

/home/ezannoni/uberbaum/installed/bin/strip --strip-debug /home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break -o /home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break.stripped

/home/ezannoni/uberbaum/installed/bin/strip --only-keep-debug /home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break -o /home/ezannoni/sepdebug-binutils/home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break.debug

/home/ezannoni/uberbaum/installed/bin/objcopy --add-gnu-debuglink=/home/ezannoni/sepdebug-binutils/home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break.debug /home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break.stripped /home/ezannoni/gdb-sources/tomago/gdb/testsuite/gdb.base/break


elena

2003-06-26  Elena Zannoni  <ezannoni@redhat.com>

	* symfile.c (syms_from_objfile): Move variables to inner block.
	Move the checks for the non-mainline case a bit earlier to avoid
	doing some useless computations.
Index: symfile.c
===================================================================
RCS file: /cvs/uberbaum/gdb/symfile.c,v
retrieving revision 1.100
diff -u -p -r1.100 symfile.c
--- symfile.c	22 Jun 2003 18:32:49 -0000	1.100
+++ symfile.c	26 Jun 2003 20:43:20 -0000
@@ -566,12 +566,8 @@ syms_from_objfile (struct objfile *objfi
 		   int mainline,
                    int verbo)
 {
-  asection *lower_sect;
-  asection *sect;
-  CORE_ADDR lower_offset;
   struct section_addr_info *local_addr = NULL;
   struct cleanup *old_chain;
-  int i;
 
   gdb_assert (! (addrs && offsets));
 
@@ -626,8 +622,13 @@ syms_from_objfile (struct objfile *objfi
 
      We no longer warn if the lowest section is not a text segment (as
      happens for the PA64 port.  */
-  if (!mainline)
+  if (!mainline && addrs && addrs->other[0].name)
     {
+      asection *lower_sect;
+      asection *sect;
+      CORE_ADDR lower_offset;
+      int i;
+
       /* Find lowest loadable section to be used as starting point for 
          continguous sections. FIXME!! won't work without call to find
 	 .text first, but this assumes text is lowest section. */
@@ -659,9 +660,7 @@ syms_from_objfile (struct objfile *objfi
  	 (the loadable section directly below it in memory).
  	 this_offset = lower_offset = lower_addr - lower_orig_addr */
 
-      /* Calculate offsets for sections. */
-      if (addrs)
-        for (i=0 ; i < addrs->num_sections && addrs->other[i].name; i++)
+        for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
           {
             if (addrs->other[i].addr != 0)
               {