* elf-bfd.h (_bfd_elf_section_from_bfd_section): Update prototype.

	* elf.c (_bfd_elf_section_from_bfd_section): Return unsigned int,
	SHN_BAD on error.
	(_bfd_elf_print_private_bfd_data): Test for SHN_BAD result from
	_bfd_elf_section_from_bfd_section, not -1.
	(swap_out_syms): Likewise.
	* elflink.c (elf_link_add_object_symbols): Likewise.
	(bfd_elf_get_bfd_needed_list): Likewise.
	(bfd_elf_match_symbols_in_sections): Likewise.
	(elf_link_add_object_symbols): Don't bother testing for symbols
	using normal sections before calling bfd_section_from_elf_index.
	(elf_link_input_bfd, bfd_elf_final_link): Likewise.
	(bfd_elf_reloc_symbol_deleted_p): Likewise.
	* elfcode.h (elf_slurp_symbol_table): Likewise.
	* elf32-spu.c (get_sym_h): Likewise.
	* elf32-xtensa.c (get_elf_r_symndx_section): Likewise.
	* elf64-ppc.c (opd_entry_value, get_sym_h, ppc64_elf_edit_toc): Ditto.
	* elf64-sh64.c (sh_elf64_get_relocated_section_contents): Likewise.

9 files changed, 92 insertions, 116 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 936b729ec9..1dca4b708c 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,24 @@
+2008-03-12  Alan Modra  <amodra@bigpond.net.au>
+
+	* elf-bfd.h (_bfd_elf_section_from_bfd_section): Update prototype.
+	* elf.c (_bfd_elf_section_from_bfd_section): Return unsigned int,
+	SHN_BAD on error.
+	(_bfd_elf_print_private_bfd_data): Test for SHN_BAD result from
+	_bfd_elf_section_from_bfd_section, not -1.
+	(swap_out_syms): Likewise.
+	* elflink.c (elf_link_add_object_symbols): Likewise.
+	(bfd_elf_get_bfd_needed_list): Likewise.
+	(bfd_elf_match_symbols_in_sections): Likewise.
+	(elf_link_add_object_symbols): Don't bother testing for symbols
+	using normal sections before calling bfd_section_from_elf_index.
+	(elf_link_input_bfd, bfd_elf_final_link): Likewise.
+	(bfd_elf_reloc_symbol_deleted_p): Likewise.
+	* elfcode.h (elf_slurp_symbol_table): Likewise.
+	* elf32-spu.c (get_sym_h): Likewise.
+	* elf32-xtensa.c (get_elf_r_symndx_section): Likewise.
+	* elf64-ppc.c (opd_entry_value, get_sym_h, ppc64_elf_edit_toc): Ditto.
+	* elf64-sh64.c (sh_elf64_get_relocated_section_contents): Likewise.
+
 2008-03-11  Alan Modra  <amodra@bigpond.net.au>
 
 	* elf32-spu.c (spu_elf_relocate_section): Test identical conditions
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 164cbde83e..b3d1d387ea 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1636,7 +1636,7 @@ extern void _bfd_elf_swap_versym_in
 extern void _bfd_elf_swap_versym_out
   (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *);
 
-extern int _bfd_elf_section_from_bfd_section
+extern unsigned int _bfd_elf_section_from_bfd_section
   (bfd *, asection *);
 extern char *bfd_elf_string_from_elf_section
   (bfd *, unsigned, unsigned);
diff --git a/bfd/elf.c b/bfd/elf.c
index 54375c2757..c697e9e52e 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -1180,7 +1180,7 @@ _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
   s = bfd_get_section_by_name (abfd, ".dynamic");
   if (s != NULL)
     {
-      int elfsec;
+      unsigned int elfsec;
       unsigned long shlink;
       bfd_byte *extdyn, *extdynend;
       size_t extdynsize;
@@ -1192,7 +1192,7 @@ _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
 	goto error_return;
 
       elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
-      if (elfsec == -1)
+      if (elfsec == SHN_BAD)
 	goto error_return;
       shlink = elf_elfsections (abfd)[elfsec]->sh_link;
 
@@ -4996,11 +4996,11 @@ _bfd_elf_write_corefile_contents (bfd *abfd)
 
 /* Given a section, search the header to find them.  */
 
-int
+unsigned int
 _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
 {
   const struct elf_backend_data *bed;
-  int index;
+  unsigned int index;
 
   if (elf_section_data (asect) != NULL
       && elf_section_data (asect)->this_idx != 0)
@@ -5013,7 +5013,7 @@ _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
   else if (bfd_is_und_section (asect))
     index = SHN_UNDEF;
   else
-    index = -1;
+    index = SHN_BAD;
 
   bed = get_elf_backend_data (abfd);
   if (bed->elf_backend_section_from_bfd_section)
@@ -5024,7 +5024,7 @@ _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
 	return retval;
     }
 
-  if (index == -1)
+  if (index == SHN_BAD)
     bfd_set_error (bfd_error_nonrepresentable_section);
 
   return index;
@@ -6277,7 +6277,7 @@ swap_out_syms (bfd *abfd,
       else
 	{
 	  asection *sec = syms[idx]->section;
-	  int shndx;
+	  unsigned int shndx;
 
 	  if (sec->output_section)
 	    {
@@ -6324,7 +6324,7 @@ swap_out_syms (bfd *abfd,
 	    {
 	      shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
 
-	      if (shndx == -1)
+	      if (shndx == SHN_BAD)
 		{
 		  asection *sec2;
 
@@ -6348,7 +6348,7 @@ Unable to find equivalent output section for symbol '%s' from section '%s'"),
 		    }
 
 		  shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
-		  BFD_ASSERT (shndx != -1);
+		  BFD_ASSERT (shndx != SHN_BAD);
 		}
 	    }
 
diff --git a/bfd/elf32-spu.c b/bfd/elf32-spu.c
index 99b1b610b0..93fe0a4f94 100644
--- a/bfd/elf32-spu.c
+++ b/bfd/elf32-spu.c
@@ -409,14 +409,7 @@ get_sym_h (struct elf_link_hash_entry **hp,
 	*symp = sym;
 
       if (symsecp != NULL)
-	{
-	  asection *symsec = NULL;
-	  if ((sym->st_shndx != SHN_UNDEF
-	       && sym->st_shndx < SHN_LORESERVE)
-	      || sym->st_shndx > SHN_HIRESERVE)
-	    symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
-	  *symsecp = symsec;
-	}
+	*symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
     }
 
   return TRUE;
diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
index ec6d4636e2..0d744c220e 100644
--- a/bfd/elf32-xtensa.c
+++ b/bfd/elf32-xtensa.c
@@ -9503,15 +9503,12 @@ get_elf_r_symndx_section (bfd *abfd, unsigned long r_symndx)
 
       if (section_index == SHN_UNDEF)
 	target_sec = bfd_und_section_ptr;
-      else if (section_index > 0 && section_index < SHN_LORESERVE)
-	target_sec = bfd_section_from_elf_index (abfd, section_index);
       else if (section_index == SHN_ABS)
 	target_sec = bfd_abs_section_ptr;
       else if (section_index == SHN_COMMON)
 	target_sec = bfd_com_section_ptr;
       else
-	/* Who knows?  */
-	target_sec = NULL;
+	target_sec = bfd_section_from_elf_index (abfd, section_index);
     }
   else
     {
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index a1968245ab..8aabad741d 100644
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -5026,11 +5026,7 @@ opd_entry_value (asection *opd_sec,
 
 		  sym += symndx;
 		  val = sym->st_value;
-		  sec = NULL;
-		  if ((sym->st_shndx != SHN_UNDEF
-		       && sym->st_shndx < SHN_LORESERVE)
-		      || sym->st_shndx > SHN_HIRESERVE)
-		    sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
+		  sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
 		  BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
 		}
 	      else
@@ -6060,14 +6056,7 @@ get_sym_h (struct elf_link_hash_entry **hp,
 	*symp = sym;
 
       if (symsecp != NULL)
-	{
-	  asection *symsec = NULL;
-	  if ((sym->st_shndx != SHN_UNDEF
-	       && sym->st_shndx < SHN_LORESERVE)
-	      || sym->st_shndx > SHN_HIRESERVE)
-	    symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
-	  *symsecp = symsec;
-	}
+	*symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
 
       if (tls_maskp != NULL)
 	{
@@ -7577,10 +7566,7 @@ ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
 	      for (sym = local_syms;
 		   sym < local_syms + symtab_hdr->sh_info;
 		   ++sym)
-		if (sym->st_shndx != SHN_UNDEF
-		    && (sym->st_shndx < SHN_LORESERVE
-			|| sym->st_shndx > SHN_HIRESERVE)
-		    && sym->st_value != 0
+		if (sym->st_value != 0
 		    && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
 		  {
 		    if (skip[sym->st_value >> 3] != (unsigned long) -1)
diff --git a/bfd/elf64-sh64.c b/bfd/elf64-sh64.c
index fb5e8c9b0e..a39002597c 100644
--- a/bfd/elf64-sh64.c
+++ b/bfd/elf64-sh64.c
@@ -1,5 +1,5 @@
 /* SuperH SH64-specific support for 64-bit ELF
-   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -2195,17 +2195,12 @@ sh_elf64_get_relocated_section_contents (bfd *output_bfd,
 
 	  if (isymp->st_shndx == SHN_UNDEF)
 	    isec = bfd_und_section_ptr;
-	  else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE)
-	    isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
 	  else if (isymp->st_shndx == SHN_ABS)
 	    isec = bfd_abs_section_ptr;
 	  else if (isymp->st_shndx == SHN_COMMON)
 	    isec = bfd_com_section_ptr;
 	  else
-	    {
-	      /* Who knows?  */
-	      isec = NULL;
-	    }
+	    isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
 
 	  *secpp = isec;
 	}
diff --git a/bfd/elfcode.h b/bfd/elfcode.h
index 969c25aa0c..bbbffe16e4 100644
--- a/bfd/elfcode.h
+++ b/bfd/elfcode.h
@@ -1,6 +1,6 @@
 /* ELF executable support for BFD.
    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-   2001, 2002, 2003, 2004, 2005, 2006, 2007
+   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
 
    Written by Fred Fish @ Cygnus Support, from information published
@@ -1270,19 +1270,6 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic)
 	    {
 	      sym->symbol.section = bfd_und_section_ptr;
 	    }
-	  else if (isym->st_shndx < SHN_LORESERVE
-		   || isym->st_shndx > SHN_HIRESERVE)
-	    {
-	      sym->symbol.section = bfd_section_from_elf_index (abfd,
-								isym->st_shndx);
-	      if (sym->symbol.section == NULL)
-		{
-		  /* This symbol is in a section for which we did not
-		     create a BFD section.  Just use bfd_abs_section,
-		     although it is wrong.  FIXME.  */
-		  sym->symbol.section = bfd_abs_section_ptr;
-		}
-	    }
 	  else if (isym->st_shndx == SHN_ABS)
 	    {
 	      sym->symbol.section = bfd_abs_section_ptr;
@@ -1297,7 +1284,17 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic)
 	      sym->symbol.value = isym->st_size;
 	    }
 	  else
-	    sym->symbol.section = bfd_abs_section_ptr;
+	    {
+	      sym->symbol.section
+		= bfd_section_from_elf_index (abfd, isym->st_shndx);
+	      if (sym->symbol.section == NULL)
+		{
+		  /* This symbol is in a section for which we did not
+		     create a BFD section.  Just use bfd_abs_section,
+		     although it is wrong.  FIXME.  */
+		  sym->symbol.section = bfd_abs_section_ptr;
+		}
+	    }
 
 	  /* If this is a relocatable file, then the symbol value is
 	     already section relative.  */
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 513979926b..ed99a5d136 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -3472,14 +3472,14 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
 	{
 	  bfd_byte *dynbuf;
 	  bfd_byte *extdyn;
-	  int elfsec;
+	  unsigned int elfsec;
 	  unsigned long shlink;
 
 	  if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
 	    goto error_free_dyn;
 
 	  elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
-	  if (elfsec == -1)
+	  if (elfsec == SHN_BAD)
 	    goto error_free_dyn;
 	  shlink = elf_elfsections (abfd)[elfsec]->sh_link;
 
@@ -3820,8 +3820,16 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
 
       if (isym->st_shndx == SHN_UNDEF)
 	sec = bfd_und_section_ptr;
-      else if (isym->st_shndx < SHN_LORESERVE
-	       || isym->st_shndx > SHN_HIRESERVE)
+      else if (isym->st_shndx == SHN_ABS)
+	sec = bfd_abs_section_ptr;
+      else if (isym->st_shndx == SHN_COMMON)
+	{
+	  sec = bfd_com_section_ptr;
+	  /* What ELF calls the size we call the value.  What ELF
+	     calls the value we call the alignment.  */
+	  value = isym->st_size;
+	}
+      else
 	{
 	  sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
 	  if (sec == NULL)
@@ -3836,19 +3844,6 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
 	  else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
 	    value -= sec->vma;
 	}
-      else if (isym->st_shndx == SHN_ABS)
-	sec = bfd_abs_section_ptr;
-      else if (isym->st_shndx == SHN_COMMON)
-	{
-	  sec = bfd_com_section_ptr;
-	  /* What ELF calls the size we call the value.  What ELF
-	     calls the value we call the alignment.  */
-	  value = isym->st_size;
-	}
-      else
-	{
-	  /* Leave it up to the processor backend.  */
-	}
 
       name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
 					      isym->st_name);
@@ -6750,7 +6745,7 @@ bfd_elf_get_bfd_needed_list (bfd *abfd,
 {
   asection *s;
   bfd_byte *dynbuf = NULL;
-  int elfsec;
+  unsigned int elfsec;
   unsigned long shlink;
   bfd_byte *extdyn, *extdynend;
   size_t extdynsize;
@@ -6770,7 +6765,7 @@ bfd_elf_get_bfd_needed_list (bfd *abfd,
     goto error_return;
 
   elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
-  if (elfsec == -1)
+  if (elfsec == SHN_BAD)
     goto error_return;
 
   shlink = elf_elfsections (abfd)[elfsec]->sh_link;
@@ -6942,7 +6937,7 @@ bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2,
   Elf_Internal_Sym *isym, *isymend;
   struct elf_symbol *symtable1 = NULL, *symtable2 = NULL;
   bfd_size_type count1, count2, i;
-  int shndx1, shndx2;
+  unsigned int shndx1, shndx2;
   bfd_boolean result;
 
   bfd1 = sec1->owner;
@@ -6958,7 +6953,7 @@ bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2,
 
   shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1);
   shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2);
-  if (shndx1 == -1 || shndx2 == -1)
+  if (shndx1 == SHN_BAD || shndx2 == SHN_BAD)
     return FALSE;
 
   bed1 = get_elf_backend_data (bfd1);
@@ -7015,9 +7010,9 @@ bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2,
       while (lo < hi)
 	{
 	  mid = (lo + hi) / 2;
-	  if ((unsigned int) shndx1 < ssymbuf1[mid].st_shndx)
+	  if (shndx1 < ssymbuf1[mid].st_shndx)
 	    hi = mid;
-	  else if ((unsigned int) shndx1 > ssymbuf1[mid].st_shndx)
+	  else if (shndx1 > ssymbuf1[mid].st_shndx)
 	    lo = mid + 1;
 	  else
 	    {
@@ -7034,9 +7029,9 @@ bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2,
       while (lo < hi)
 	{
 	  mid = (lo + hi) / 2;
-	  if ((unsigned int) shndx2 < ssymbuf2[mid].st_shndx)
+	  if (shndx2 < ssymbuf2[mid].st_shndx)
 	    hi = mid;
-	  else if ((unsigned int) shndx2 > ssymbuf2[mid].st_shndx)
+	  else if (shndx2 > ssymbuf2[mid].st_shndx)
 	    lo = mid + 1;
 	  else
 	    {
@@ -7099,12 +7094,12 @@ bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2,
   /* Count definitions in the section.  */
   count1 = 0;
   for (isym = isymbuf1, isymend = isym + symcount1; isym < isymend; isym++)
-    if (isym->st_shndx == (unsigned int) shndx1)
+    if (isym->st_shndx == shndx1)
       symtable1[count1++].u.isym = isym;
 
   count2 = 0;
   for (isym = isymbuf2, isymend = isym + symcount2; isym < isymend; isym++)
-    if (isym->st_shndx == (unsigned int) shndx2)
+    if (isym->st_shndx == shndx2)
       symtable2[count2++].u.isym = isym;
 
   if (count1 == 0 || count2 == 0 || count1 != count2)
@@ -8904,28 +8899,26 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
 
       if (isym->st_shndx == SHN_UNDEF)
 	isec = bfd_und_section_ptr;
-      else if (isym->st_shndx < SHN_LORESERVE
-	       || isym->st_shndx > SHN_HIRESERVE)
-	{
-	  isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
-	  if (isec
-	      && isec->sec_info_type == ELF_INFO_TYPE_MERGE
-	      && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
-	    isym->st_value =
-	      _bfd_merged_section_offset (output_bfd, &isec,
-					  elf_section_data (isec)->sec_info,
-					  isym->st_value);
-	}
       else if (isym->st_shndx == SHN_ABS)
 	isec = bfd_abs_section_ptr;
       else if (isym->st_shndx == SHN_COMMON)
 	isec = bfd_com_section_ptr;
       else
 	{
-	  /* Don't attempt to output symbols with st_shnx in the
-	     reserved range other than SHN_ABS and SHN_COMMON.  */
-	  *ppsection = NULL;
-	  continue;
+	  isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
+	  if (isec == NULL)
+	    {
+	      /* Don't attempt to output symbols with st_shnx in the
+		 reserved range other than SHN_ABS and SHN_COMMON.  */
+	      *ppsection = NULL;
+	      continue;
+	    }
+	  else if (isec->sec_info_type == ELF_INFO_TYPE_MERGE
+		   && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
+	    isym->st_value =
+	      _bfd_merged_section_offset (output_bfd, &isec,
+					  elf_section_data (isec)->sec_info,
+					  isym->st_value);
 	}
 
       *ppsection = isec;
@@ -10491,13 +10484,10 @@ bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
 		 the original st_name with the dynstr_index.  */
 	      sym = e->isym;
 
-	      if (e->isym.st_shndx != SHN_UNDEF
-		  && (e->isym.st_shndx < SHN_LORESERVE
-		      || e->isym.st_shndx > SHN_HIRESERVE))
+	      s = bfd_section_from_elf_index (e->input_bfd,
+					      e->isym.st_shndx);
+	      if (s != NULL)
 		{
-		  s = bfd_section_from_elf_index (e->input_bfd,
-						  e->isym.st_shndx);
-
 		  sym.st_shndx =
 		    elf_section_data (s->output_section)->this_idx;
 		  if (! check_dynsym (abfd, &sym))
@@ -11864,12 +11854,9 @@ bfd_elf_reloc_symbol_deleted_p (bfd_vma offset, void *cookie)
 
 	  /* Need to: get the symbol; get the section.  */
 	  isym = &rcookie->locsyms[r_symndx];
-	  if (isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
-	    {
-	      isec = bfd_section_from_elf_index (rcookie->abfd, isym->st_shndx);
-	      if (isec != NULL && elf_discarded_section (isec))
-		return TRUE;
-	    }
+	  isec = bfd_section_from_elf_index (rcookie->abfd, isym->st_shndx);
+	  if (isec != NULL && elf_discarded_section (isec))
+	    return TRUE;
 	}
       return FALSE;
     }