2000-08-07 Elena Zannoni <ezannoni@kwikemart.cygnus.com>

	* objfiles.h (SECT_OFF_BSS): Don't detect invalid sect_index_bss
 	here, let the users of the macro do it.
	* symtab.h (ANOFFSET): Detect here if the section index is not
 	initialized.
	* xcoffread.c (find_targ_sec): Don't treat .bss as special,
 	because some objfiles may not have that section at all.
	* coffread.c (cs_to_section): Ditto.
	* elfread.c (elf_symtab_read): Detect an uninitialized index
 	value.
	(elfstab_offset_sections): The macro ANOFFSET cannot be used as an
 	lvalue anymore.
	* remote.c (get_offsets, remote_cisco_objfile_relocate): Don't use
 	ANOFFSET as an lvalue.
	* objfiles.c (objfile_relocate, objfile_relocate): Don't use
 	ANOFFSET as an lvalue.
	* symfile.c (default_symfile_offsets): Don't use ANOFFSET as an
 	lvalue.

8 files changed, 52 insertions, 20 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6c687cb..4bafc70 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,23 @@
+2000-08-07  Elena Zannoni  <ezannoni@kwikemart.cygnus.com>
+
+	* objfiles.h (SECT_OFF_BSS): Don't detect invalid sect_index_bss
+ 	here, let the users of the macro do it.
+	* symtab.h (ANOFFSET): Detect here if the section index is not
+ 	initialized.
+	* xcoffread.c (find_targ_sec): Don't treat .bss as special,
+ 	because some objfiles may not have that section at all.
+	* coffread.c (cs_to_section): Ditto.
+	* elfread.c (elf_symtab_read): Detect an uninitialized index
+ 	value.
+	(elfstab_offset_sections): The macro ANOFFSET cannot be used as an
+ 	lvalue anymore.
+	* remote.c (get_offsets, remote_cisco_objfile_relocate): Don't use
+ 	ANOFFSET as an lvalue.
+	* objfiles.c (objfile_relocate, objfile_relocate): Don't use
+ 	ANOFFSET as an lvalue.
+	* symfile.c (default_symfile_offsets): Don't use ANOFFSET as an
+ 	lvalue.
+
 Mon Aug  7 10:24:30 2000  David Taylor  <taylor@texas.cygnus.com>
 
 	* parse.c (build_parse): don't write off the end of the std_regs
diff --git a/gdb/coffread.c b/gdb/coffread.c
index 75f6fc5..f35609d 100644
--- a/gdb/coffread.c
+++ b/gdb/coffread.c
@@ -347,7 +347,8 @@ cs_to_section (struct coff_symbol *cs, struct objfile *objfile)
       else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD)
 	off = SECT_OFF_DATA (objfile);
       else
-	off = SECT_OFF_BSS (objfile);
+	/* Just return the bfd section index. */
+	off = sect->index;
     }
   return off;
 }
diff --git a/gdb/elfread.c b/gdb/elfread.c
index 3de6b5e..b964552 100644
--- a/gdb/elfread.c
+++ b/gdb/elfread.c
@@ -474,11 +474,16 @@ elf_symtab_read (struct objfile *objfile, int dynamic)
 				    (char *) filesym->name;
 				}
 			    }
-			  if (sectinfo->sections[index] != 0)
-			    {
-			      complain (&section_info_dup_complaint,
-					sectinfo->filename);
+			  if (index != -1)
+			    { 
+			      if (sectinfo->sections[index] != 0)
+				{
+				  complain (&section_info_dup_complaint,
+					    sectinfo->filename);
+				}
 			    }
+			  else
+			    internal_error ("Section index uninitialized.");
 			  /* Bfd symbols are section relative. */
 			  symaddr = sym->value + sym->section->vma;
 			  /* Relocate non-absolute symbols by the section offset. */
@@ -486,7 +491,10 @@ elf_symtab_read (struct objfile *objfile, int dynamic)
 			    {
 			      symaddr += offset;
 			    }
-			  sectinfo->sections[index] = symaddr;
+			  if (index != -1)
+			    sectinfo->sections[index] = symaddr;
+			  else
+			    internal_error ("Section index uninitialized.");
 			  /* The special local symbols don't go in the
 			     minimal symbol table, so ignore this one. */
 			  continue;
@@ -790,7 +798,7 @@ elfstab_offset_sections (struct objfile *objfile, struct partial_symtab *pst)
       pst->section_offsets = (struct section_offsets *)
 	obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
       for (i = 0; i < SECT_OFF_MAX; i++)
-	ANOFFSET (pst->section_offsets, i) = maybe->sections[i];
+	(pst->section_offsets)->offsets[i] = maybe->sections[i];
       return;
     }
 
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index f5b1119..e0228f5 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -520,7 +520,7 @@ objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets)
     int something_changed = 0;
     for (i = 0; i < objfile->num_sections; ++i)
       {
-	ANOFFSET (delta, i) =
+	delta->offsets[i] =
 	  ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i);
 	if (ANOFFSET (delta, i) != 0)
 	  something_changed = 1;
@@ -639,7 +639,7 @@ objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets)
   {
     int i;
     for (i = 0; i < objfile->num_sections; ++i)
-      ANOFFSET (objfile->section_offsets, i) = ANOFFSET (new_offsets, i);
+      (objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i);
   }
 
   {
diff --git a/gdb/objfiles.h b/gdb/objfiles.h
index 86b77a5..90a1740 100644
--- a/gdb/objfiles.h
+++ b/gdb/objfiles.h
@@ -597,8 +597,9 @@ extern int is_in_import_list (char *, struct objfile *);
      ((objfile->sect_index_text == -1) ? \
       (internal_error ("sect_index_text not initialized"), -1) : objfile->sect_index_text)
 
-#define SECT_OFF_BSS(objfile) \
-     ((objfile->sect_index_bss == -1) ? \
-      (internal_error ("sect_index_bss not initialized"), -1) : objfile->sect_index_bss)
+/* Sometimes the .bss section is missing from the objfile, so we don't
+   want to die here. Let the users of SECT_OFF_BSS deal with an
+   uninitialized section index. */
+#define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss
 
 #endif /* !defined (OBJFILES_H) */
diff --git a/gdb/remote.c b/gdb/remote.c
index 8c3d694..9fe2a29 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -1835,14 +1835,14 @@ get_offsets (void)
   offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
   memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
 
-  ANOFFSET (offs, SECT_OFF_TEXT (symfile_objfile)) = text_addr;
+  offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr;
 
   /* This is a temporary kludge to force data and bss to use the same offsets
      because that's what nlmconv does now.  The real solution requires changes
      to the stub and remote.c that I don't have time to do right now.  */
 
-  ANOFFSET (offs, SECT_OFF_DATA (symfile_objfile)) = data_addr;
-  ANOFFSET (offs, SECT_OFF_BSS (symfile_objfile)) = data_addr;
+  offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr;
+  offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr;
 
   objfile_relocate (symfile_objfile, offs);
 }
@@ -1948,9 +1948,9 @@ remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off,
       offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
       memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
 
-      ANOFFSET (offs, SECT_OFF_TEXT (symfile_objfile)) = text_off;
-      ANOFFSET (offs, SECT_OFF_DATA (symfile_objfile)) = data_off;
-      ANOFFSET (offs, SECT_OFF_BSS (symfile_objfile)) = bss_off;
+      offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off;
+      offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off;
+      offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off;
 
       /* First call the standard objfile_relocate.  */
       objfile_relocate (symfile_objfile, offs);
diff --git a/gdb/symfile.c b/gdb/symfile.c
index e28158a..a353c5f 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -521,7 +521,7 @@ default_symfile_offsets (struct objfile *objfile,
       /* Record all sections in offsets */
       /* The section_offsets in the objfile are here filled in using
          the BFD index. */
-      ANOFFSET (objfile->section_offsets, osp->sectindex) = osp->addr;
+      (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr;
     }
 
   /* Remember the bfd indexes for the .text, .data, .bss and
diff --git a/gdb/symtab.h b/gdb/symtab.h
index 101759f..55db0f8 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -829,7 +829,9 @@ struct section_offsets
     CORE_ADDR offsets[1];	/* As many as needed. */
   };
 
-#define	ANOFFSET(secoff, whichone)	(secoff->offsets[whichone])
+#define	ANOFFSET(secoff, whichone) \
+   ((whichone == -1) ? \
+    (internal_error ("Section index is uninitialized"), -1) : secoff->offsets[whichone])
 
 /* The maximum possible size of a section_offsets table.  */