SPU icache symbol fix

[Alan Modra]

I'm committing this patch from Ulrich to fix ABI defined symbols,
and to cure errors found when using .ovl.init, which occupies the
icache buffer but isn't an overlay so does not delimit the start
of overlay LMAs.

	* elf32-spu.c (spu_elf_find_overlays): Don't use .ovl.init lma as
	start of overlays.
	(spu_elf_build_stubs): Don't define __icache_tagbase.  Define
	__icache_tag_array and __icache_tag_array_size.

Index: bfd/elf32-spu.c
===================================================================
RCS file: /cvs/src/src/bfd/elf32-spu.c,v
retrieving revision 1.69
diff -u -p -r1.69 elf32-spu.c
--- bfd/elf32-spu.c	19 Mar 2009 07:04:11 -0000	1.69
+++ bfd/elf32-spu.c	11 May 2009 09:27:22 -0000
@@ -657,7 +657,10 @@ spu_elf_find_overlays (struct bfd_link_i
 	    {
 	      asection *s0 = alloc_sec[i - 1];
 	      vma_start = s0->vma;
-	      lma_start = s0->lma;
+	      if (strncmp (s0->name, ".ovl.init", 9) != 0)
+		lma_start = s0->lma;
+	      else
+		lma_start = s->lma;
 	      ovl_end = (s0->vma
 			 + ((bfd_vma) 1
 			    << (htab->num_lines_log2 + htab->line_size_log2)));
@@ -1938,12 +1941,19 @@ spu_elf_build_stubs (struct bfd_link_inf
     {
       bfd_vma off, icache_base, linklist;
 
-      h = define_ovtab_symbol (htab, "__icache_tagbase");
+      h = define_ovtab_symbol (htab, "__icache_tag_array");
       if (h == NULL)
 	return FALSE;
       h->root.u.def.value = 0;
       h->size = 16 << htab->num_lines_log2;
       off = h->size;
+
+      h = define_ovtab_symbol (htab, "__icache_tag_array_size");
+      if (h == NULL)
+	return FALSE;
+      h->root.u.def.value = 16 << htab->num_lines_log2;
+      h->root.u.def.section = bfd_abs_section_ptr;
+
       icache_base = htab->ovl_sec[0]->vma;
       linklist = (htab->ovtab->output_section->vma
 		  + htab->ovtab->output_offset

-- 
Alan Modra
Australia Development Lab, IBM