From: Alan Modra <amodra@gmail.com>
Date: Sat, 10 Nov 2001 00:23:35 +0000 (+0000)
Subject: 	* elf32-arm.h (elf32_arm_final_link_relocate): Don't copy STN_UNDEF
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ec33885937c311707a20bac4207422abde93511e;p=binutils-gdb.git

	* elf32-arm.h (elf32_arm_final_link_relocate): Don't copy STN_UNDEF
	relocs into shared libs.
	* elf32-cris.c (cris_elf_relocate_section): Likewise.
	* elf32-i370.c (i370_elf_relocate_section): Likewise.
	* elf32-m68k.c (elf_m68k_relocate_section): Likewise.
	* elf32-mips.c (mips_elf_calculate_relocation): Likewise.
	* elf32-ppc.c (ppc_elf_relocate_section): Likewise.
	* elf32-sh.c (sh_elf_relocate_section): Likewise.
	* elf32-sparc.c (elf32_sparc_relocate_section): Likewise.
	* elf64-alpha.c (elf64_alpha_relocate_section): Likewise.
	* elf64-s390.c (elf_s390_relocate_section): Likewise.
	* elf64-sparc.c (sparc64_elf_relocate_section): Likewise.
	* elf64-x86-64.c (elf64_x86_64_relocate_section): Likewise.
	* elfxx-ia64.c (elfNN_ia64_relocate_section): Likewise.
	* elf.c (bfd_section_from_r_symndx): New function.
	* elf-bfd.h (LOCAL_SYM_CACHE_SIZE): Define.
	(struct sym_sec_cache): New.
	(bfd_section_from_r_symndx): Declare.
	(struct bfd_elf_section_data): Change local_dynrel type to PTR.
	* elflink.h (elf_link_input_bfd): Don't test for removed linkonce
	relocs when relocatable.  Don't	zero entire reloc, just zero the
	addend and sym.
	* elf32-i386.c (struct elf_i386_link_hash_table): Add sym_sec.
	(elf_i386_link_hash_table_create): Init it.
	(elf_i386_check_relocs): Track dynamic relocs needed for local
	syms on a per-section basis as we do for globals.
	(elf_i386_gc_sweep_hook): Update for local_dynrel change.
	Remove dead code.
	(allocate_dynrelocs): Warning fix.
	(elf_i386_size_dynamic_sections): Don't allocate relocs when
	section has been discarded.
	(elf_i386_relocate_section): Don't copy STN_UNDEF relocs
	into shared libs.
	* elf32-hppa.c: Likewise.
	* elf32-s390.c: Likewise.
	* elf64-ppc.c: Likewise.
	* elf64-s390.c: Likewise.
---

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index e189fe5947e..556e6135b6b 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,83 @@
+2001-11-10  Alan Modra  <amodra@bigpond.net.au>
+
+	* elf32-arm.h (elf32_arm_final_link_relocate): Don't copy STN_UNDEF
+	relocs into shared libs.
+	* elf32-cris.c (cris_elf_relocate_section): Likewise.
+	* elf32-i370.c (i370_elf_relocate_section): Likewise.
+	* elf32-m68k.c (elf_m68k_relocate_section): Likewise.
+	* elf32-mips.c (mips_elf_calculate_relocation): Likewise.
+	* elf32-ppc.c (ppc_elf_relocate_section): Likewise.
+	* elf32-sh.c (sh_elf_relocate_section): Likewise.
+	* elf32-sparc.c (elf32_sparc_relocate_section): Likewise.
+	* elf64-alpha.c (elf64_alpha_relocate_section): Likewise.
+	* elf64-s390.c (elf_s390_relocate_section): Likewise.
+	* elf64-sparc.c (sparc64_elf_relocate_section): Likewise.
+	* elf64-x86-64.c (elf64_x86_64_relocate_section): Likewise.
+	* elfxx-ia64.c (elfNN_ia64_relocate_section): Likewise.
+
+	* elf.c (bfd_section_from_r_symndx): New function.
+	* elf-bfd.h (LOCAL_SYM_CACHE_SIZE): Define.
+	(struct sym_sec_cache): New.
+	(bfd_section_from_r_symndx): Declare.
+	(struct bfd_elf_section_data): Change local_dynrel type to PTR.
+	* elflink.h (elf_link_input_bfd): Don't test for removed linkonce
+	relocs when relocatable.  Don't	zero entire reloc, just zero the
+	addend and sym.
+	* elf32-hppa.c (struct elf32_hppa_link_hash_table): Add sym_sec.
+	(elf32_hppa_link_hash_table_create): Init it.
+	(elf32_hppa_check_relocs): Track dynamic relocs needed for local
+	syms on a per-section basis as we do for globals.
+	(elf32_hppa_gc_sweep_hook): Update for local_dynrel change.
+	(allocate_dynrelocs): Warning fix.
+	(elf32_hppa_size_dynamic_sections): Don't allocate relocs when
+	section has been discarded.
+	(elf32_hppa_relocate_section): Don't copy STN_UNDEF relocs
+	into shared libs.
+	* elf32-i386.c (struct elf_i386_link_hash_table): Add sym_sec.
+	(elf_i386_link_hash_table_create): Init it.
+	(elf_i386_check_relocs): Track dynamic relocs needed for local
+	syms on a per-section basis as we do for globals.
+	(elf_i386_gc_sweep_hook): Update for local_dynrel change.
+	Remove dead code.
+	(allocate_dynrelocs): Warning fix.
+	(elf_i386_size_dynamic_sections): Don't allocate relocs when
+	section has been discarded.
+	(elf_i386_relocate_section): Don't copy STN_UNDEF relocs
+	into shared libs.
+	* elf32-s390.c (struct elf_s390_link_hash_table): Add sym_sec.
+	(elf_s390_link_hash_table_create): Init it.
+	(elf_s390_check_relocs): Track dynamic relocs needed for local
+	syms on a per-section basis as we do for globals.
+	(elf_s390_gc_sweep_hook): Update for local_dynrel change.
+	Remove dead code.
+	(allocate_dynrelocs): Warning fix.
+	(elf_s390_size_dynamic_sections): Don't allocate relocs when
+	section has been discarded.
+	(elf_s390_relocate_section): Don't copy STN_UNDEF relocs
+	into shared libs.
+	* elf64-ppc.c (struct ppc_link_hash_table): Add sym_sec.
+	(ppc64_link_hash_table_create): Init it.
+	(ppc64_elf_check_relocs): Track dynamic relocs needed for local
+	syms on a per-section basis as we do for globals.
+	(ppc64_elf_gc_sweep_hook): Update for local_dynrel change.
+	(allocate_dynrelocs): Call the correct record_dynamic_dymbol
+	function.  Warning fix.
+	(ppc64_elf_size_dynamic_sections): Don't allocate relocs when
+	section has been discarded.
+	(ppc64_elf_relocate_section): Don't copy STN_UNDEF relocs
+	into shared libs.
+	* elf64-s390.c (struct elf_s390_link_hash_table): Add sym_sec.
+	(elf_s390_link_hash_table_create): Init it.
+	(elf_s390_check_relocs): Track dynamic relocs needed for local
+	syms on a per-section basis as we do for globals.
+	(elf_s390_gc_sweep_hook): Update for local_dynrel change.
+	Remove dead code.
+	(allocate_dynrelocs): Warning fix.
+	(elf_s390_size_dynamic_sections): Don't allocate relocs when
+	section has been discarded.
+	(elf_s390_relocate_section): Don't copy STN_UNDEF relocs
+	into shared libs.
+
 2001-11-08  Martin Schwidefsky  <schwidefsky@de.ibm.com>
 
 	* elf32-s390: Major rework that introduces all recent changes to
@@ -65,7 +145,7 @@
 	(elf_s390_copy_indirect_symbol): New function.
 	(elf_s390_create_dynamic_sections): New function.
 	(readonly_dynrelocs): New function.
-	* elf64-s390x: Likewise.
+	* elf64-s390.c: Likewise.
 
 2001-11-07  Jakub Jelinek  <jakub@redhat.com>
 
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index e9a8b838368..cb79eeab69f 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -299,6 +299,16 @@ struct elf_link_hash_table
 /* Returns true if the hash table is a struct elf_link_hash_table.  */
 #define is_elf_hash_table(p)					      	\
   ((p)->hash->type == bfd_link_elf_hash_table)
+
+/* Used by bfd_section_from_r_symndx to cache a small number of local
+   symbol to section mappings.  */
+#define LOCAL_SYM_CACHE_SIZE 32
+struct sym_sec_cache
+{
+  bfd *abfd;
+  unsigned long indx[LOCAL_SYM_CACHE_SIZE];
+  asection *sec[LOCAL_SYM_CACHE_SIZE];
+};
 
 /* Constant information held for an ELF backend.  */
 
@@ -778,8 +788,9 @@ struct bfd_elf_section_data
   /* The number of relocations currently assigned to REL_HDR2.  */
   unsigned int rel_count2;
 
-  /* The number of dynamic relocs copied for local symbols.  */
-  unsigned int local_dynrel;
+  /* A pointer to a linked list tracking dynamic relocs copied for
+     local symbols.  */
+  PTR local_dynrel;
 
   /* A pointer to the bfd section used for dynamic relocs.  */
   asection *sreloc;
@@ -1198,6 +1209,8 @@ extern boolean bfd_section_from_phdr
 extern int _bfd_elf_symbol_from_bfd_symbol
   PARAMS ((bfd *, asymbol **));
 
+extern asection *bfd_section_from_r_symndx
+  PARAMS ((bfd *, struct sym_sec_cache *, asection *, unsigned long));
 extern asection *bfd_section_from_elf_index
   PARAMS ((bfd *, unsigned int));
 extern boolean _bfd_elf_create_dynamic_sections
diff --git a/bfd/elf.c b/bfd/elf.c
index 8c1694e41cf..7bffecdb40f 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -1747,6 +1747,62 @@ bfd_section_from_shdr (abfd, shindex)
   return true;
 }
 
+/* Return the section for the local symbol specified by ABFD, R_SYMNDX.
+   Return SEC for sections that have no elf section, and NULL on error.  */
+
+asection *
+bfd_section_from_r_symndx (abfd, cache, sec, r_symndx)
+     bfd *abfd;
+     struct sym_sec_cache *cache;
+     asection *sec;
+     unsigned long r_symndx;
+{
+  unsigned char esym_shndx[2];
+  unsigned int isym_shndx;
+  Elf_Internal_Shdr *symtab_hdr;
+  file_ptr pos;
+  bfd_size_type amt;
+  unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
+
+  if (cache->abfd == abfd && cache->indx[ent] == r_symndx)
+    return cache->sec[ent];
+
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+  pos = symtab_hdr->sh_offset;
+  if (get_elf_backend_data (abfd)->s->sizeof_sym
+      == sizeof (Elf64_External_Sym))
+    {
+      pos += r_symndx * sizeof (Elf64_External_Sym);
+      pos += offsetof (Elf64_External_Sym, st_shndx);
+    }
+  else
+    {
+      pos += r_symndx * sizeof (Elf32_External_Sym);
+      pos += offsetof (Elf32_External_Sym, st_shndx);
+    }
+  amt = sizeof (esym_shndx);
+  if (bfd_seek (abfd, pos, SEEK_SET) != 0
+      || bfd_bread ((PTR) esym_shndx, amt, abfd) != amt)
+    return NULL;
+  isym_shndx = H_GET_16 (abfd, esym_shndx);
+
+  if (cache->abfd != abfd)
+    {
+      memset (cache->indx, -1, sizeof (cache->indx));
+      cache->abfd = abfd;
+    }
+  cache->indx[ent] = r_symndx;
+  cache->sec[ent] = sec;
+  if (isym_shndx > 0 && isym_shndx < SHN_LORESERVE)
+    {
+      asection *s;
+      s = bfd_section_from_elf_index (abfd, isym_shndx);
+      if (s != NULL)
+	cache->sec[ent] = s;
+    }
+  return cache->sec[ent];
+}
+
 /* Given an ELF section number, retrieve the corresponding BFD
    section.  */
 
diff --git a/bfd/elf32-arm.h b/bfd/elf32-arm.h
index 838c24ff556..83a2d6d7ff0 100644
--- a/bfd/elf32-arm.h
+++ b/bfd/elf32-arm.h
@@ -1116,6 +1116,7 @@ elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
       /* When generating a shared object, these relocations are copied
 	 into the output file to be resolved at run time.  */
       if (info->shared
+	  && r_symndx != 0
 	  && (r_type != R_ARM_PC24
 	      || (h != NULL
 	          && h->dynindx != -1
diff --git a/bfd/elf32-cris.c b/bfd/elf32-cris.c
index c881ee4dc0a..41f4cfcd803 100644
--- a/bfd/elf32-cris.c
+++ b/bfd/elf32-cris.c
@@ -1233,6 +1233,7 @@ cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_CRIS_16:
 	case R_CRIS_32:
 	  if (info->shared
+	      && r_symndx != 0
 	      && (input_section->flags & SEC_ALLOC) != 0
 	      && ((r_type != R_CRIS_8_PCREL
 		   && r_type != R_CRIS_16_PCREL
diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c
index 0bebd89e5da..97abe8ff748 100644
--- a/bfd/elf32-hppa.c
+++ b/bfd/elf32-hppa.c
@@ -263,6 +263,9 @@ struct elf32_hppa_link_hash_table {
 
   /* Set if we need a .plt stub to support lazy dynamic linking.  */
   unsigned int need_plt_stub:1;
+
+  /* Small local sym to section mapping cache.  */
+  struct sym_sec_cache sym_sec;
 };
 
 /* Various hash macros and functions.  */
@@ -507,6 +510,7 @@ elf32_hppa_link_hash_table_create (abfd)
   ret->has_12bit_branch = 0;
   ret->has_17bit_branch = 0;
   ret->need_plt_stub = 0;
+  ret->sym_sec.abfd = NULL;
 
   return &ret->elf.root;
 }
@@ -1514,6 +1518,9 @@ elf32_hppa_check_relocs (abfd, info, sec, relocs)
 		      || (h->elf.elf_link_hash_flags
 			  & ELF_LINK_HASH_DEF_REGULAR) == 0)))
 	    {
+	      struct elf32_hppa_dyn_reloc_entry *p;
+	      struct elf32_hppa_dyn_reloc_entry **head;
+
 	      /* Create a reloc section in dynobj and make room for
 		 this reloc.  */
 	      if (sreloc == NULL)
@@ -1561,36 +1568,46 @@ elf32_hppa_check_relocs (abfd, info, sec, relocs)
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
 		{
-		  struct elf32_hppa_dyn_reloc_entry *p;
+		  head = &h->dyn_relocs;
+		}
+	      else
+		{
+		  /* Track dynamic relocs needed for local syms too.
+		     We really need local syms available to do this
+		     easily.  Oh well.  */
+
+		  asection *s;
+		  s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+						 sec, r_symndx);
+		  if (s == NULL)
+		    return false;
 
-		  p = h->dyn_relocs;
-		  if (p == NULL || p->sec != sec)
-		    {
-		      p = ((struct elf32_hppa_dyn_reloc_entry *)
-			   bfd_alloc (htab->elf.dynobj,
-				      (bfd_size_type) sizeof *p));
-		      if (p == NULL)
-			return false;
-		      p->next = h->dyn_relocs;
-		      h->dyn_relocs = p;
-		      p->sec = sec;
-		      p->count = 0;
+		  head = ((struct elf32_hppa_dyn_reloc_entry **)
+			  &elf_section_data (s)->local_dynrel);
+		}
+
+	      p = *head;
+	      if (p == NULL || p->sec != sec)
+		{
+		  p = ((struct elf32_hppa_dyn_reloc_entry *)
+		       bfd_alloc (htab->elf.dynobj,
+				  (bfd_size_type) sizeof *p));
+		  if (p == NULL)
+		    return false;
+		  p->next = *head;
+		  *head = p;
+		  p->sec = sec;
+		  p->count = 0;
 #if RELATIVE_DYNRELOCS
-		      p->relative_count = 0;
+		  p->relative_count = 0;
 #endif
-		    }
+		}
 
-		  p->count += 1;
+	      p->count += 1;
 #if RELATIVE_DYNRELOCS
-		  if (!IS_ABSOLUTE_RELOC (rtype))
-		    p->relative_count += 1;
+	      if (!IS_ABSOLUTE_RELOC (rtype))
+		p->relative_count += 1;
 #endif
-		}
-	      else
-		{
-		  /* Track dynamic relocs needed for local syms too.  */
-		  elf_section_data (sec)->local_dynrel += 1;
-		}
 	    }
 	}
     }
@@ -1666,7 +1683,7 @@ elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
   struct elf32_hppa_link_hash_table *htab;
   bfd *dynobj;
 
-  elf_section_data (sec)->local_dynrel = 0;
+  elf_section_data (sec)->local_dynrel = NULL;
 
   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (abfd);
@@ -2184,7 +2201,7 @@ allocate_dynrelocs (h, inf)
       eh->dyn_relocs = NULL;
       return true;
 
-    keep:
+    keep: ;
     }
 
   /* Finally, allocate space.  */
@@ -2311,12 +2328,26 @@ elf32_hppa_size_dynamic_sections (output_bfd, info)
 
       for (s = ibfd->sections; s != NULL; s = s->next)
 	{
-	  bfd_size_type count = elf_section_data (s)->local_dynrel;
+	  struct elf32_hppa_dyn_reloc_entry *p;
 
-	  if (count != 0)
+	  for (p = ((struct elf32_hppa_dyn_reloc_entry *)
+		    elf_section_data (s)->local_dynrel);
+	       p != NULL;
+	       p = p->next)
 	    {
-	      srel = elf_section_data (s)->sreloc;
-	      srel->_raw_size += count * sizeof (Elf32_External_Rela);
+	      if (!bfd_is_abs_section (p->sec)
+		  && bfd_is_abs_section (p->sec->output_section))
+		{
+		  /* Input section has been discarded, either because
+		     it is a copy of a linkonce section or due to
+		     linker script /DISCARD/, so we'll be discarding
+		     the relocs too.  */
+		}
+	      else
+		{
+		  srel = elf_section_data (p->sec)->sreloc;
+		  srel->_raw_size += p->count * sizeof (Elf32_External_Rela);
+		}
 	    }
 	}
 
@@ -3877,12 +3908,19 @@ elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_PARISC_DPREL14R:
 	case R_PARISC_DPREL21L:
 	case R_PARISC_DIR32:
+	  /* r_symndx will be zero only for relocs against symbols
+	     from removed linkonce sections, or sections discarded by
+	     a linker script.  */
+	  if (r_symndx == 0
+	      || (input_section->flags & SEC_ALLOC) == 0)
+	    break;
+
 	  /* The reloc types handled here and this conditional
 	     expression must match the code in ..check_relocs and
-	     ..discard_relocs.  ie. We need exactly the same condition
+	     allocate_dynrelocs.  ie. We need exactly the same condition
 	     as in ..check_relocs, with some extra conditions (dynindx
 	     test in this case) to cater for relocs removed by
-	     ..discard_relocs.  If you squint, the non-shared test
+	     allocate_dynrelocs.  If you squint, the non-shared test
 	     here does indeed match the one in ..check_relocs, the
 	     difference being that here we test DEF_DYNAMIC as well as
 	     !DEF_REGULAR.  All common syms end up with !DEF_REGULAR,
@@ -3890,7 +3928,6 @@ elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
 	     Conversely, DEF_DYNAMIC can't be used in check_relocs as
 	     there all files have not been loaded.  */
 	  if ((info->shared
-	       && (input_section->flags & SEC_ALLOC) != 0
 	       && (IS_ABSOLUTE_RELOC (r_type)
 		   || (h != NULL
 		       && h->elf.dynindx != -1
@@ -3898,7 +3935,6 @@ elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
 			   || (h->elf.elf_link_hash_flags
 			       & ELF_LINK_HASH_DEF_REGULAR) == 0))))
 	      || (!info->shared
-		  && (input_section->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && h->elf.dynindx != -1
 		  && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
diff --git a/bfd/elf32-i370.c b/bfd/elf32-i370.c
index a93e9a7c122..3f9c9c1e210 100644
--- a/bfd/elf32-i370.c
+++ b/bfd/elf32-i370.c
@@ -1449,7 +1449,8 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section,
            object.  */
 	case (int)R_I370_ADDR31:
 	case (int)R_I370_ADDR16:
-	  if (info->shared)
+	  if (info->shared
+	      && r_symndx != 0)
 	    {
 	      Elf_Internal_Rela outrel;
 	      boolean skip;
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 211a19cb081..238772e4c61 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -497,6 +497,9 @@ struct elf_i386_link_hash_table
   asection *srelplt;
   asection *sdynbss;
   asection *srelbss;
+
+  /* Small local sym to section mapping cache.  */
+  struct sym_sec_cache sym_sec;
 };
 
 /* Get the i386 ELF linker hash table from a link_info structure.  */
@@ -561,6 +564,7 @@ elf_i386_link_hash_table_create (abfd)
   ret->srelplt = NULL;
   ret->sdynbss = NULL;
   ret->srelbss = NULL;
+  ret->sym_sec.abfd = NULL;
 
   return &ret->elf.root;
 }
@@ -833,6 +837,9 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
 		      || (h->elf_link_hash_flags
 			  & ELF_LINK_HASH_DEF_REGULAR) == 0)))
 	    {
+	      struct elf_i386_dyn_relocs *p;
+	      struct elf_i386_dyn_relocs **head;
+
 	      /* We must copy these reloc types into the output file.
 		 Create a reloc section in dynobj and make room for
 		 this reloc.  */
@@ -883,35 +890,42 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
 		{
-		  struct elf_i386_link_hash_entry *eh;
-		  struct elf_i386_dyn_relocs *p;
-
-		  eh = (struct elf_i386_link_hash_entry *) h;
-		  p = eh->dyn_relocs;
-
-		  if (p == NULL || p->sec != sec)
-		    {
-		      bfd_size_type amt = sizeof *p;
-		      p = ((struct elf_i386_dyn_relocs *)
-			   bfd_alloc (htab->elf.dynobj, amt));
-		      if (p == NULL)
-			return false;
-		      p->next = eh->dyn_relocs;
-		      eh->dyn_relocs = p;
-		      p->sec = sec;
-		      p->count = 0;
-		      p->pc_count = 0;
-		    }
-
-		  p->count += 1;
-		  if (ELF32_R_TYPE (rel->r_info) == R_386_PC32)
-		    p->pc_count += 1;
+		  head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
 		}
 	      else
 		{
-		  /* Track dynamic relocs needed for local syms too.  */
-		  elf_section_data (sec)->local_dynrel += 1;
+		  /* Track dynamic relocs needed for local syms too.
+		     We really need local syms available to do this
+		     easily.  Oh well.  */
+
+		  asection *s;
+		  s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+						 sec, r_symndx);
+		  if (s == NULL)
+		    return false;
+
+		  head = ((struct elf_i386_dyn_relocs **)
+			  &elf_section_data (s)->local_dynrel);
+		}
+
+	      p = *head;
+	      if (p == NULL || p->sec != sec)
+		{
+		  bfd_size_type amt = sizeof *p;
+		  p = ((struct elf_i386_dyn_relocs *)
+		       bfd_alloc (htab->elf.dynobj, amt));
+		  if (p == NULL)
+		    return false;
+		  p->next = *head;
+		  *head = p;
+		  p->sec = sec;
+		  p->count = 0;
+		  p->pc_count = 0;
 		}
+
+	      p->count += 1;
+	      if (ELF32_R_TYPE (rel->r_info) == R_386_PC32)
+		p->pc_count += 1;
 	    }
 	  break;
 
@@ -1000,13 +1014,8 @@ elf_i386_gc_sweep_hook (abfd, info, sec, relocs)
   const Elf_Internal_Rela *rel, *relend;
   unsigned long r_symndx;
   struct elf_link_hash_entry *h;
-  bfd *dynobj;
 
-  elf_section_data (sec)->local_dynrel = 0;
-
-  dynobj = elf_hash_table (info)->dynobj;
-  if (dynobj == NULL)
-    return true;
+  elf_section_data (sec)->local_dynrel = NULL;
 
   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (abfd);
@@ -1393,7 +1402,7 @@ allocate_dynrelocs (h, inf)
 
       eh->dyn_relocs = NULL;
 
-    keep:
+    keep: ;
     }
 
   /* Finally, allocate space.  */
@@ -1480,12 +1489,26 @@ elf_i386_size_dynamic_sections (output_bfd, info)
 
       for (s = ibfd->sections; s != NULL; s = s->next)
 	{
-	  bfd_size_type count = elf_section_data (s)->local_dynrel;
+	  struct elf_i386_dyn_relocs *p;
 
-	  if (count != 0)
+	  for (p = *((struct elf_i386_dyn_relocs **)
+		     &elf_section_data (s)->local_dynrel);
+	       p != NULL;
+	       p = p->next)
 	    {
-	      srel = elf_section_data (s)->sreloc;
-	      srel->_raw_size += count * sizeof (Elf32_External_Rel);
+	      if (!bfd_is_abs_section (p->sec)
+		  && bfd_is_abs_section (p->sec->output_section))
+		{
+		  /* Input section has been discarded, either because
+		     it is a copy of a linkonce section or due to
+		     linker script /DISCARD/, so we'll be discarding
+		     the relocs too.  */
+		}
+	      else
+		{
+		  srel = elf_section_data (p->sec)->sreloc;
+		  srel->_raw_size += p->count * sizeof (Elf32_External_Rel);
+		}
 	    }
 	}
 
@@ -1924,8 +1947,14 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
 
 	case R_386_32:
 	case R_386_PC32:
+	  /* r_symndx will be zero only for relocs against symbols
+	     from removed linkonce sections, or sections discarded by
+	     a linker script.  */
+	  if (r_symndx == 0
+	      || (input_section->flags & SEC_ALLOC) == 0)
+	    break;
+
 	  if ((info->shared
-	       && (input_section->flags & SEC_ALLOC) != 0
 	       && (r_type != R_386_PC32
 		   || (h != NULL
 		       && h->dynindx != -1
@@ -1933,7 +1962,6 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
 			   || (h->elf_link_hash_flags
 			       & ELF_LINK_HASH_DEF_REGULAR) == 0))))
 	      || (!info->shared
-		  && (input_section->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && h->dynindx != -1
 		  && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
@@ -2010,7 +2038,6 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
 	      if (! relocate)
 		continue;
 	    }
-
 	  break;
 
 	default:
diff --git a/bfd/elf32-m68k.c b/bfd/elf32-m68k.c
index 609e91a5371..a613024c24a 100644
--- a/bfd/elf32-m68k.c
+++ b/bfd/elf32-m68k.c
@@ -1644,6 +1644,7 @@ elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_68K_16:
 	case R_68K_32:
 	  if (info->shared
+	      && r_symndx != 0
 	      && (input_section->flags & SEC_ALLOC) != 0
 	      && ((r_type != R_68K_PC8
 		   && r_type != R_68K_PC16
diff --git a/bfd/elf32-mips.c b/bfd/elf32-mips.c
index 6b0c7a46adf..b40c56e68b3 100644
--- a/bfd/elf32-mips.c
+++ b/bfd/elf32-mips.c
@@ -6325,6 +6325,7 @@ mips_elf_calculate_relocation (abfd,
 		    & ELF_LINK_HASH_DEF_DYNAMIC) != 0)
 	       && ((h->root.elf_link_hash_flags
 		    & ELF_LINK_HASH_DEF_REGULAR) == 0)))
+	  && r_symndx != 0
 	  && (input_section->flags & SEC_ALLOC) != 0)
 	{
 	  /* If we're creating a shared library, or this relocation is
diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c
index 6dd826041fc..cd6bd959607 100644
--- a/bfd/elf32-ppc.c
+++ b/bfd/elf32-ppc.c
@@ -3175,7 +3175,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	case (int) R_PPC_ADDR14:
 	case (int) R_PPC_UADDR32:
 	case (int) R_PPC_UADDR16:
-	  if (info->shared)
+	  if (info->shared && r_symndx != 0)
 	    {
 	      Elf_Internal_Rela outrel;
 	      boolean skip;
diff --git a/bfd/elf32-s390.c b/bfd/elf32-s390.c
index f09410bee70..aeb9805a25e 100644
--- a/bfd/elf32-s390.c
+++ b/bfd/elf32-s390.c
@@ -123,7 +123,7 @@ elf_s390_reloc_type_lookup (abfd, code)
      bfd *abfd ATTRIBUTE_UNUSED;
      bfd_reloc_code_real_type code;
 {
-  switch (code) 
+  switch (code)
     {
     case BFD_RELOC_NONE:
       return &elf_howto_table[(int) R_390_NONE];
@@ -415,6 +415,9 @@ struct elf_s390_link_hash_table
   asection *srelplt;
   asection *sdynbss;
   asection *srelbss;
+
+  /* Small local sym to section mapping cache.  */
+  struct sym_sec_cache sym_sec;
 };
 
 /* Get the s390 ELF linker hash table from a link_info structure.  */
@@ -439,13 +442,13 @@ link_hash_newfunc (entry, table, string)
       if (entry == NULL)
 	return entry;
     }
-  
+
   /* Call the allocation method of the superclass.  */
   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
   if (entry != NULL)
     {
       struct elf_s390_link_hash_entry *eh;
-      
+
       eh = (struct elf_s390_link_hash_entry *) entry;
       eh->dyn_relocs = NULL;
     }
@@ -479,6 +482,7 @@ elf_s390_link_hash_table_create (abfd)
   ret->srelplt = NULL;
   ret->sdynbss = NULL;
   ret->srelbss = NULL;
+  ret->sym_sec.abfd = NULL;
 
   return &ret->elf.root;
 }
@@ -716,7 +720,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		 Tentatively set the flag for now, and correct in
 		 adjust_dynamic_symbol.  */
 	      h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
-	
+
 	      /* We may need a .plt entry if the function this reloc
 		 refers to is in a shared lib.  */
 	      h->plt.refcount += 1;
@@ -745,7 +749,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 	     symbol.  */
 	  if ((info->shared
 	       && (sec->flags & SEC_ALLOC) != 0
-	       && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 
+	       && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
 		    && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
 		    && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
 		   || (h != NULL
@@ -760,6 +764,9 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		      || (h->elf_link_hash_flags
 			  & ELF_LINK_HASH_DEF_REGULAR) == 0)))
 	    {
+	      struct elf_s390_dyn_relocs *p;
+	      struct elf_s390_dyn_relocs **head;
+
 	      /* We must copy these reloc types into the output file.
 		 Create a reloc section in dynobj and make room for
 		 this reloc.  */
@@ -767,7 +774,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		{
 		  const char *name;
 		  bfd *dynobj;
-		
+
 		  name = (bfd_elf_string_from_elf_section
 			  (abfd,
 			   elf_elfheader (abfd)->e_shstrndx,
@@ -810,54 +817,61 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
 		{
-		  struct elf_s390_link_hash_entry *eh;
-		  struct elf_s390_dyn_relocs *p;
-
-		  eh = (struct elf_s390_link_hash_entry *) h;
-		  p = eh->dyn_relocs;
-
-		  if (p == NULL || p->sec != sec)
-		    {
-		      bfd_size_type amt = sizeof *p;
-		      p = ((struct elf_s390_dyn_relocs *)
-			   bfd_alloc (htab->elf.dynobj, amt));
-		      if (p == NULL)
-			return false;
-		      p->next = eh->dyn_relocs;
-		      eh->dyn_relocs = p;
-		      p->sec = sec;
-		      p->count = 0;
-		      p->pc_count = 0;
-		    }
-		  
-		  p->count += 1;
-		  if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
-		      || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
-		      || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
-		    p->pc_count += 1;
+		  head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
 		}
 	      else
 		{
-		  /* Track dynamic relocs needed for local syms too.  */
-		  elf_section_data (sec)->local_dynrel += 1;
+		  /* Track dynamic relocs needed for local syms too.
+		     We really need local syms available to do this
+		     easily.  Oh well.  */
+
+		  asection *s;
+		  s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+						 sec, r_symndx);
+		  if (s == NULL)
+		    return false;
+
+		  head = ((struct elf_s390_dyn_relocs **)
+			  &elf_section_data (s)->local_dynrel);
+		}
+
+	      p = *head;
+	      if (p == NULL || p->sec != sec)
+		{
+		  bfd_size_type amt = sizeof *p;
+		  p = ((struct elf_s390_dyn_relocs *)
+		       bfd_alloc (htab->elf.dynobj, amt));
+		  if (p == NULL)
+		    return false;
+		  p->next = *head;
+		  *head = p;
+		  p->sec = sec;
+		  p->count = 0;
+		  p->pc_count = 0;
 		}
+
+	      p->count += 1;
+	      if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
+		  || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
+		  || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
+		p->pc_count += 1;
 	    }
 	  break;
-	
+
 	  /* This relocation describes the C++ object vtable hierarchy.
 	     Reconstruct it for later use during GC.  */
         case R_390_GNU_VTINHERIT:
           if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
             return false;
           break;
-	
+
 	  /* This relocation describes which C++ vtable entries are actually
 	     used.  Record for later use during GC.  */
         case R_390_GNU_VTENTRY:
           if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
             return false;
           break;
-	
+
 	default:
 	  break;
 	}
@@ -929,13 +943,8 @@ elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
   const Elf_Internal_Rela *rel, *relend;
   unsigned long r_symndx;
   struct elf_link_hash_entry *h;
-  bfd *dynobj;
-
-  elf_section_data (sec)->local_dynrel = 0;
 
-  dynobj = elf_hash_table (info)->dynobj;
-  if (dynobj == NULL)
-    return true;
+  elf_section_data (sec)->local_dynrel = NULL;
 
   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (abfd);
@@ -1108,7 +1117,7 @@ elf_s390_adjust_dynamic_symbol (info, h)
     }
 
   /* If we didn't find any dynamic relocs in read-only sections, then
-     we'll be keeping the dynamic relocs and avoiding the copy reloc.  */ 
+     we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
   if (p == NULL)
     {
       h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
@@ -1226,10 +1235,10 @@ allocate_dynrelocs (h, inf)
 	      h->root.u.def.section = s;
 	      h->root.u.def.value = h->plt.offset;
 	    }
-	  
+
 	  /* Make room for this entry.  */
 	  s->_raw_size += PLT_ENTRY_SIZE;
-	  
+
 	  /* We also need to make an entry in the .got.plt section, which
 	     will be placed in the .got section by the linker script.  */
 	  htab->sgotplt->_raw_size += GOT_ENTRY_SIZE;
@@ -1242,13 +1251,13 @@ allocate_dynrelocs (h, inf)
  	  h->plt.offset = (bfd_vma) -1;
 	  h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
 	}
-    } 
+    }
   else
     {
       h->plt.offset = (bfd_vma) -1;
       h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
-    }      
-  
+    }
+
   if (h->got.refcount > 0)
     {
       asection *s;
@@ -1332,7 +1341,7 @@ allocate_dynrelocs (h, inf)
 
       eh->dyn_relocs = NULL;
 
-    keep:
+    keep: ;
     }
 
   /* Finally, allocate space.  */
@@ -1419,12 +1428,26 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 
       for (s = ibfd->sections; s != NULL; s = s->next)
 	{
-	  bfd_size_type count = elf_section_data (s)->local_dynrel;
+	  struct elf_s390_dyn_relocs *p;
 
-	  if (count != 0)
+	  for (p = *((struct elf_s390_dyn_relocs **)
+		     &elf_section_data (s)->local_dynrel);
+	       p != NULL;
+	       p = p->next)
 	    {
-	      srela = elf_section_data (s)->sreloc;
-	      srela->_raw_size += count * sizeof (Elf32_External_Rela);
+	      if (!bfd_is_abs_section (p->sec)
+		  && bfd_is_abs_section (p->sec->output_section))
+		{
+		  /* Input section has been discarded, either because
+		     it is a copy of a linkonce section or due to
+		     linker script /DISCARD/, so we'll be discarding
+		     the relocs too.  */
+		}
+	      else
+		{
+		  srela = elf_section_data (p->sec)->sreloc;
+		  srela->_raw_size += p->count * sizeof (Elf32_External_Rela);
+		}
 	    }
 	}
 
@@ -1474,7 +1497,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 	{
 	  if (s->_raw_size != 0 && s != htab->srelplt)
 	    relocs = true;
-	  
+
 	  /* We use the reloc_count field as a counter if we need
 	     to copy relocs into the output file.  */
 	  s->reloc_count = 0;
@@ -1510,7 +1533,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
       if (s->contents == NULL)
 	return false;
     }
-  
+
   if (htab->elf.dynamic_sections_created)
     {
       /* Add some entries to the .dynamic section.  We fill in the
@@ -1520,13 +1543,13 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 	 dynamic linker and used by the debugger.  */
 #define add_dynamic_entry(TAG, VAL) \
   bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
-      
+
       if (! info->shared)
 	{
 	  if (!add_dynamic_entry (DT_DEBUG, 0))
 	    return false;
 	}
-      
+
       if (htab->splt->_raw_size != 0)
 	{
 	  if (!add_dynamic_entry (DT_PLTGOT, 0)
@@ -1535,7 +1558,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 	      || !add_dynamic_entry (DT_JMPREL, 0))
 	    return false;
 	}
-      
+
       if (relocs)
         {
           if (!add_dynamic_entry (DT_RELA, 0)
@@ -1546,7 +1569,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 	  /* If any dynamic relocs apply to a read-only section,
 	     then we need a DT_TEXTREL entry.  */
 	  elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
-	  
+
 	  if ((info->flags & DF_TEXTREL) != 0)
 	    {
 	      if (!add_dynamic_entry (DT_TEXTREL, 0))
@@ -1555,7 +1578,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 	}
     }
 #undef add_dynamic_entry
-  
+
   return true;
 }
 
@@ -1599,7 +1622,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
       bfd_vma relocation;
       boolean unresolved_reloc;
       bfd_reloc_status_type r;
-      
+
       r_type = ELF32_R_TYPE (rel->r_info);
       if (r_type == (int) R_390_GNU_VTINHERIT
           || r_type == (int) R_390_GNU_VTENTRY)
@@ -1610,9 +1633,9 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	  return false;
 	}
       howto = elf_howto_table + r_type;
-      
+
       r_symndx = ELF32_R_SYM (rel->r_info);
-      
+
       if (info->relocateable)
 	{
 	  /* This is a relocateable link.  We don't have to change
@@ -1628,10 +1651,10 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 		  rel->r_addend += sec->output_offset + sym->st_value;
 		}
 	    }
-	  
+
 	  continue;
 	}
-      
+
       /* This is a final link.  */
       h = NULL;
       sym = NULL;
@@ -1651,7 +1674,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	  while (h->root.type == bfd_link_hash_indirect
 		 || h->root.type == bfd_link_hash_warning)
 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
-	  
+
 	  if (h->root.type == bfd_link_hash_defined
 	      || h->root.type == bfd_link_hash_defweak)
 	    {
@@ -1725,7 +1748,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	      relocation = 0;
 	    }
 	}
-      
+
       switch (r_type)
 	{
         case R_390_GOT12:
@@ -1735,11 +1758,11 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
              offset table.  */
 	  if (htab->sgot == NULL)
 	    abort ();
-	  
+
           if (h != NULL)
             {
 	      boolean dyn;
-	      
+
               off = h->got.offset;
 	      dyn = htab->elf.dynamic_sections_created;
               if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
@@ -1869,8 +1892,14 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
         case R_390_PC16:
         case R_390_PC16DBL:
         case R_390_PC32:
+	  /* r_symndx will be zero only for relocs against symbols
+	     from removed linkonce sections, or sections discarded by
+	     a linker script.  */
+          if (r_symndx == 0
+              || (input_section->flags & SEC_ALLOC) == 0)
+	    break;
+
           if ((info->shared
-	       && (input_section->flags & SEC_ALLOC) != 0
 	       && ((r_type != R_390_PC16
 		    && r_type != R_390_PC16DBL
 		    && r_type != R_390_PC32)
@@ -1880,7 +1909,6 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 			   || (h->elf_link_hash_flags
 			       & ELF_LINK_HASH_DEF_REGULAR) == 0))))
 	      || (!info->shared
-		  && (input_section->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && h->dynindx != -1
 		  && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
@@ -1895,13 +1923,13 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
               boolean skip, relocate;
 	      asection *sreloc;
 	      Elf32_External_Rela *loc;
-	      
+
 	      /* When generating a shared object, these relocations
 		 are copied into the output file to be resolved at run
 		 time.  */
-	      
+
               skip = false;
-	      
+
               if (elf_section_data (input_section)->stab_info == NULL)
                 outrel.r_offset = rel->r_offset;
               else
@@ -1914,10 +1942,10 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
                     skip = true;
                   outrel.r_offset = off;
                 }
-	      
+
               outrel.r_offset += (input_section->output_section->vma
                                   + input_section->output_offset);
-	      
+
               if (skip)
                 {
                   memset (&outrel, 0, sizeof outrel);
@@ -1944,15 +1972,15 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 		  outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
 		  outrel.r_addend = relocation + rel->r_addend;
                 }
-	      
+
 	      sreloc = elf_section_data (input_section)->sreloc;
 	      if (sreloc == NULL)
 		abort ();
-	      
+
 	      loc = (Elf32_External_Rela *) sreloc->contents;
 	      loc += sreloc->reloc_count++;
 	      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
-	      
+
               /* If this reloc is against an external symbol, we do
                  not want to fiddle with the addend.  Otherwise, we
                  need to include the symbol value so that it becomes
@@ -1960,13 +1988,12 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
               if (! relocate)
                 continue;
             }
-	  
 	  break;
-	  
+
 	default:
 	  break;
 	}
-      
+
       if (unresolved_reloc
 	  && !(info->shared
 	       && (input_section->flags & SEC_DEBUGGING) != 0
@@ -1977,15 +2004,15 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	   bfd_get_section_name (input_bfd, input_section),
 	   (long) rel->r_offset,
 	   h->root.root.string);
-      
+
       r = _bfd_final_link_relocate (howto, input_bfd, input_section,
 				    contents, rel->r_offset,
 				    relocation, rel->r_addend);
-      
+
       if (r != bfd_reloc_ok)
 	{
 	  const char *name;
-	  
+
 	  if (h != NULL)
 	    name = h->root.root.string;
 	  else
@@ -1998,10 +2025,10 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	      if (*name == '\0')
 		name = bfd_section_name (input_bfd, sec);
 	    }
-	  
+
 	  if (r == bfd_reloc_overflow)
 	    {
-	      
+
 	      if (! ((*info->callbacks->reloc_overflow)
 		     (info, name, howto->name, (bfd_vma) 0,
 		      input_bfd, input_section, rel->r_offset)))
@@ -2018,7 +2045,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	    }
 	}
     }
-  
+
   return true;
 }
 
@@ -2033,9 +2060,9 @@ elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
      Elf_Internal_Sym *sym;
 {
   struct elf_s390_link_hash_table *htab;
-  
+
   htab = elf_s390_hash_table (info);
-  
+
   if (h->plt.offset != (bfd_vma) -1)
     {
       bfd_vma plt_index;
@@ -2043,10 +2070,10 @@ elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
       Elf_Internal_Rela rela;
       Elf32_External_Rela *loc;
       bfd_vma relative_offset;
-      
+
       /* This symbol has an entry in the procedure linkage table.  Set
          it up.  */
-      
+
       if (h->dynindx == -1
 	  || htab->splt == NULL
 	  || htab->sgotplt == NULL
@@ -2163,18 +2190,18 @@ elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
       rela.r_addend = 0;
       loc = (Elf32_External_Rela *) htab->srelplt->contents + plt_index;
       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
-  
+
       if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
 	{
 	  /* Mark the symbol as undefined, rather than as defined in
 	     the .plt section.  Leave the value alone.  This is a clue
 	     for the dynamic linker, to make function pointer
 	     comparisons work between an application and shared
-	     library.  */  
+	     library.  */
 	  sym->st_shndx = SHN_UNDEF;
 	}
     }
-  
+
   if (h->got.offset != (bfd_vma) -1)
     {
       Elf_Internal_Rela rela;
@@ -2300,18 +2327,18 @@ elf_s390_finish_dynamic_sections (output_bfd, info)
 	{
 	  Elf_Internal_Dyn dyn;
 	  asection *s;
-	
+
 	  bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
-	
+
 	  switch (dyn.d_tag)
 	    {
 	    default:
 	      continue;
-	
+
 	    case DT_PLTGOT:
 	      dyn.d_un.d_ptr = htab->sgot->output_section->vma;
 	      break;
-	
+
 	    case DT_JMPREL:
 	      dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
 	      break;
diff --git a/bfd/elf32-sh.c b/bfd/elf32-sh.c
index eec9642d099..35ebf1ab6e6 100644
--- a/bfd/elf32-sh.c
+++ b/bfd/elf32-sh.c
@@ -3216,6 +3216,7 @@ sh_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_SH_DIR32:
 	case R_SH_REL32:
 	  if (info->shared
+	      && r_symndx != 0
 	      && (input_section->flags & SEC_ALLOC) != 0
 	      && (r_type != R_SH_REL32
 		  || (h != NULL
diff --git a/bfd/elf32-sparc.c b/bfd/elf32-sparc.c
index 889d83fccc0..96fc3e9c8d9 100644
--- a/bfd/elf32-sparc.c
+++ b/bfd/elf32-sparc.c
@@ -1409,7 +1409,9 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_SPARC_LO10:
 	case R_SPARC_UA16:
 	case R_SPARC_UA32:
-	  if (info->shared && (input_section->flags & SEC_ALLOC))
+	  if (info->shared
+	      && r_symndx != 0
+	      && (input_section->flags & SEC_ALLOC))
 	    {
 	      Elf_Internal_Rela outrel;
 	      boolean skip;
diff --git a/bfd/elf64-alpha.c b/bfd/elf64-alpha.c
index ee78d1ff27b..69cfef9797b 100644
--- a/bfd/elf64-alpha.c
+++ b/bfd/elf64-alpha.c
@@ -3516,7 +3516,9 @@ elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section,
 		outrel.r_addend = addend;
 		addend = 0, relocation = 0;
 	      }
-	    else if (info->shared && (input_section->flags & SEC_ALLOC))
+	    else if (info->shared
+		     && r_symndx != 0
+		     && (input_section->flags & SEC_ALLOC))
 	      {
 		outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
 		outrel.r_addend = relocation + addend;
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 418b38684e6..97aa485c9d9 100644
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -1639,6 +1639,9 @@ struct ppc_link_hash_table
   asection *sdynbss;
   asection *srelbss;
   asection *sglink;
+
+  /* Small local sym to section mapping cache.  */
+  struct sym_sec_cache sym_sec;
 };
 
 /* Get the ppc64 ELF linker hash table from a link_info structure.  */
@@ -1701,6 +1704,7 @@ ppc64_elf_link_hash_table_create (abfd)
   htab->sdynbss = NULL;
   htab->srelbss = NULL;
   htab->sglink = NULL;
+  htab->sym_sec.abfd = NULL;
 
   return &htab->elf.root;
 }
@@ -2035,6 +2039,9 @@ ppc64_elf_check_relocs (abfd, info, sec, relocs)
 		      || (h->elf_link_hash_flags
 			  & ELF_LINK_HASH_DEF_REGULAR) == 0)))
 	    {
+	      struct ppc_dyn_relocs *p;
+	      struct ppc_dyn_relocs **head;
+
 	      /* We must copy these reloc types into the output file.
 		 Create a reloc section in dynobj and make room for
 		 this reloc.  */
@@ -2085,35 +2092,42 @@ ppc64_elf_check_relocs (abfd, info, sec, relocs)
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
 		{
-		  struct ppc_link_hash_entry *eh;
-		  struct ppc_dyn_relocs *p;
-
-		  eh = (struct ppc_link_hash_entry *) h;
-		  p = eh->dyn_relocs;
-
-		  if (p == NULL || p->sec != sec)
-		    {
-		      p = ((struct ppc_dyn_relocs *)
-			   bfd_alloc (htab->elf.dynobj,
-				      (bfd_size_type) sizeof *p));
-		      if (p == NULL)
-			return false;
-		      p->next = eh->dyn_relocs;
-		      eh->dyn_relocs = p;
-		      p->sec = sec;
-		      p->count = 0;
-		      p->pc_count = 0;
-		    }
-
-		  p->count += 1;
-		  if (!IS_ABSOLUTE_RELOC (r_type))
-		    p->pc_count += 1;
+		  head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
 		}
 	      else
 		{
-		  /* Track dynamic relocs needed for local syms too.  */
-		  elf_section_data (sec)->local_dynrel += 1;
+		  /* Track dynamic relocs needed for local syms too.
+		     We really need local syms available to do this
+		     easily.  Oh well.  */
+
+		  asection *s;
+		  s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+						 sec, r_symndx);
+		  if (s == NULL)
+		    return false;
+
+		  head = ((struct ppc_dyn_relocs **)
+			  &elf_section_data (s)->local_dynrel);
 		}
+
+	      p = *head;
+	      if (p == NULL || p->sec != sec)
+		{
+		  p = ((struct ppc_dyn_relocs *)
+		       bfd_alloc (htab->elf.dynobj,
+				  (bfd_size_type) sizeof *p));
+		  if (p == NULL)
+		    return false;
+		  p->next = *head;
+		  *head = p;
+		  p->sec = sec;
+		  p->count = 0;
+		  p->pc_count = 0;
+		}
+
+	      p->count += 1;
+	      if (!IS_ABSOLUTE_RELOC (r_type))
+		p->pc_count += 1;
 	    }
 	  break;
 
@@ -2190,6 +2204,8 @@ ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
   bfd_signed_vma *local_got_refcounts;
   const Elf_Internal_Rela *rel, *relend;
 
+  elf_section_data (sec)->local_dynrel = NULL;
+
   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (abfd);
   local_got_refcounts = elf_local_got_refcounts (abfd);
@@ -2660,7 +2676,7 @@ allocate_dynrelocs (h, inf)
 	  if (h->dynindx == -1
 	      && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
 	    {
-	      if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+	      if (! bfd_elf64_link_record_dynamic_symbol (info, h))
 		return false;
 	    }
 
@@ -2672,7 +2688,7 @@ allocate_dynrelocs (h, inf)
 
       eh->dyn_relocs = NULL;
 
-    keep:
+    keep: ;
     }
 
   /* Finally, allocate space.  */
@@ -2759,12 +2775,26 @@ ppc64_elf_size_dynamic_sections (output_bfd, info)
 
       for (s = ibfd->sections; s != NULL; s = s->next)
 	{
-	  bfd_size_type count = elf_section_data (s)->local_dynrel;
+	  struct ppc_dyn_relocs *p;
 
-	  if (count != 0)
+	  for (p = *((struct ppc_dyn_relocs **)
+		     &elf_section_data (s)->local_dynrel);
+	       p != NULL;
+	       p = p->next)
 	    {
-	      srel = elf_section_data (s)->sreloc;
-	      srel->_raw_size += count * sizeof (Elf64_External_Rela);
+	      if (!bfd_is_abs_section (p->sec)
+		  && bfd_is_abs_section (p->sec->output_section))
+		{
+		  /* Input section has been discarded, either because
+		     it is a copy of a linkonce section or due to
+		     linker script /DISCARD/, so we'll be discarding
+		     the relocs too.  */
+		}
+	      else
+		{
+		  srel = elf_section_data (p->sec)->sreloc;
+		  srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
+		}
 	    }
 	}
 
@@ -3429,8 +3459,14 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_PPC64_UADDR32:
 	case R_PPC64_UADDR64:
 	case R_PPC64_TOC:
+	  /* r_symndx will be zero only for relocs against symbols
+	     from removed linkonce sections, or sections discarded by
+	     a linker script.  */
+	  if (r_symndx == 0
+	      || (input_section->flags & SEC_ALLOC) == 0)
+	    break;
+
 	  if ((info->shared
-	       && (input_section->flags & SEC_ALLOC) != 0
 	       && (IS_ABSOLUTE_RELOC (r_type)
 		   || (h != NULL
 		       && h->dynindx != -1
@@ -3438,7 +3474,6 @@ ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 			   || (h->elf_link_hash_flags
 			       & ELF_LINK_HASH_DEF_REGULAR) == 0))))
 	      || (!info->shared
-		  && (input_section->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && h->dynindx != -1
 		  && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
diff --git a/bfd/elf64-s390.c b/bfd/elf64-s390.c
index 3bba1b35438..e0a18cdbbe3 100644
--- a/bfd/elf64-s390.c
+++ b/bfd/elf64-s390.c
@@ -374,6 +374,9 @@ struct elf_s390_link_hash_table
   asection *srelplt;
   asection *sdynbss;
   asection *srelbss;
+
+  /* Small local sym to section mapping cache.  */
+  struct sym_sec_cache sym_sec;
 };
 
 /* Get the s390 ELF linker hash table from a link_info structure.  */
@@ -438,6 +441,7 @@ elf_s390_link_hash_table_create (abfd)
   ret->srelplt = NULL;
   ret->sdynbss = NULL;
   ret->srelbss = NULL;
+  ret->sym_sec.abfd = NULL;
 
   return &ret->elf.root;
 }
@@ -620,7 +624,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 	      if (local_got_refcounts == NULL)
 		{
 		  bfd_size_type size;
-		
+
 		  size = symtab_hdr->sh_info;
 		  size *= sizeof (bfd_signed_vma);
 		  local_got_refcounts = ((bfd_signed_vma *)
@@ -644,7 +648,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		return false;
 	    }
 	  break;
-	
+
         case R_390_PLT16DBL:
 	case R_390_PLT32:
 	case R_390_PLT32DBL:
@@ -655,16 +659,16 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
              never referenced by a dynamic object, in which case we
              don't need to generate a procedure linkage table entry
              after all.  */
-	
+
 	  /* If this is a local symbol, we resolve it directly without
              creating a procedure linkage table entry.  */
 	  if (h == NULL)
 	    continue;
-	
+
 	  h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
 	  h->plt.refcount += 1;
 	  break;
-	
+
         case R_390_8:
         case R_390_16:
 	case R_390_32:
@@ -683,12 +687,12 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		 Tentatively set the flag for now, and correct in
 		 adjust_dynamic_symbol.  */
 	      h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
-	
+
 	      /* We may need a .plt entry if the function this reloc
 		 refers to is in a shared lib.  */
 	      h->plt.refcount += 1;
 	    }
-	
+
 	  /* If we are creating a shared library, and this is a reloc
 	     against a global symbol, or a non PC relative reloc
 	     against a local symbol, then we need to copy the reloc
@@ -729,6 +733,9 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		      || (h->elf_link_hash_flags
 			  & ELF_LINK_HASH_DEF_REGULAR) == 0)))
 	    {
+	      struct elf_s390_dyn_relocs *p;
+	      struct elf_s390_dyn_relocs **head;
+
 	      /* We must copy these reloc types into the output file.
 		 Create a reloc section in dynobj and make room for
 		 this reloc.  */
@@ -736,14 +743,14 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		{
 		  const char *name;
 		  bfd *dynobj;
-		
+
 		  name = (bfd_elf_string_from_elf_section
 			  (abfd,
 			   elf_elfheader (abfd)->e_shstrndx,
 			   elf_section_data (sec)->rel_hdr.sh_name));
 		  if (name == NULL)
 		    return false;
-		
+
 		  if (strncmp (name, ".rela", 5) != 0
 		      || strcmp (bfd_get_section_name (abfd, sec),
 				 name + 5) != 0)
@@ -752,7 +759,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 			(_("%s: bad relocation section name `%s\'"),
 			 bfd_archive_filename (abfd), name);
 		    }
-		
+
 		  if (htab->elf.dynobj == NULL)
 		    htab->elf.dynobj = abfd;
 
@@ -761,7 +768,7 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		  if (sreloc == NULL)
 		    {
 		      flagword flags;
-		
+
 		      sreloc = bfd_make_section (dynobj, name);
 		      flags = (SEC_HAS_CONTENTS | SEC_READONLY
 			       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
@@ -774,61 +781,68 @@ elf_s390_check_relocs (abfd, info, sec, relocs)
 		    }
 		  elf_section_data (sec)->sreloc = sreloc;
 		}
-	
+
 	      /* If this is a global symbol, we count the number of
 		 relocations we need for this symbol.  */
 	      if (h != NULL)
 		{
-		  struct elf_s390_link_hash_entry *eh;
-		  struct elf_s390_dyn_relocs *p;
-		
-		  eh = (struct elf_s390_link_hash_entry *) h;
-		  p = eh->dyn_relocs;
-
-		  if (p == NULL || p->sec != sec)
-		    {
-		      bfd_size_type amt = sizeof *p;
-		      p = ((struct elf_s390_dyn_relocs *)
-			   bfd_alloc (htab->elf.dynobj, amt));
-		      if (p == NULL)
-			return false;
-		      p->next = eh->dyn_relocs;
-		      eh->dyn_relocs = p;
-		      p->sec = sec;
-		      p->count = 0;
-		      p->pc_count = 0;
-		    }
-		
-		  p->count += 1;
-		  if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
-		      || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
-		      || ELF64_R_TYPE (rel->r_info) == R_390_PC32
-		      || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
-		      || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
-		    p->pc_count += 1;
+		  head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
 		}
 	      else
 		{
-		  /* Track dynamic relocs needed for local syms too.  */
-		  elf_section_data (sec)->local_dynrel += 1;
+		  /* Track dynamic relocs needed for local syms too.
+		     We really need local syms available to do this
+		     easily.  Oh well.  */
+
+		  asection *s;
+		  s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+						 sec, r_symndx);
+		  if (s == NULL)
+		    return false;
+
+		  head = ((struct elf_s390_dyn_relocs **)
+			  &elf_section_data (s)->local_dynrel);
+		}
+
+	      p = *head;
+	      if (p == NULL || p->sec != sec)
+		{
+		  bfd_size_type amt = sizeof *p;
+		  p = ((struct elf_s390_dyn_relocs *)
+		       bfd_alloc (htab->elf.dynobj, amt));
+		  if (p == NULL)
+		    return false;
+		  p->next = *head;
+		  *head = p;
+		  p->sec = sec;
+		  p->count = 0;
+		  p->pc_count = 0;
 		}
+
+	      p->count += 1;
+	      if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
+		  || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
+		  || ELF64_R_TYPE (rel->r_info) == R_390_PC32
+		  || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
+		  || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
+		p->pc_count += 1;
 	    }
 	  break;
-	
+
 	  /* This relocation describes the C++ object vtable hierarchy.
 	     Reconstruct it for later use during GC.  */
         case R_390_GNU_VTINHERIT:
           if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
             return false;
           break;
-	
+
 	  /* This relocation describes which C++ vtable entries are actually
 	     used.  Record for later use during GC.  */
         case R_390_GNU_VTENTRY:
           if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_offset))
             return false;
           break;
-	
+
 	default:
 	  break;
 	}
@@ -900,13 +914,8 @@ elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
   const Elf_Internal_Rela *rel, *relend;
   unsigned long r_symndx;
   struct elf_link_hash_entry *h;
-  bfd *dynobj;
 
-  elf_section_data (sec)->local_dynrel = 0;
-
-  dynobj = elf_hash_table (info)->dynobj;
-  if (dynobj == NULL)
-    return true;
+  elf_section_data (sec)->local_dynrel = NULL;
 
   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (abfd);
@@ -1205,10 +1214,10 @@ allocate_dynrelocs (h, inf)
 	      h->root.u.def.section = s;
 	      h->root.u.def.value = h->plt.offset;
 	    }
-	
+
 	  /* Make room for this entry.  */
 	  s->_raw_size += PLT_ENTRY_SIZE;
-	
+
 	  /* We also need to make an entry in the .got.plt section, which
 	     will be placed in the .got section by the linker script.  */
 	  htab->sgotplt->_raw_size += GOT_ENTRY_SIZE;
@@ -1311,7 +1320,7 @@ allocate_dynrelocs (h, inf)
 
       eh->dyn_relocs = NULL;
 
-    keep:
+    keep: ;
     }
 
   /* Finally, allocate space.  */
@@ -1398,12 +1407,26 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 
       for (s = ibfd->sections; s != NULL; s = s->next)
 	{
-	  bfd_size_type count = elf_section_data (s)->local_dynrel;
+	  struct elf_s390_dyn_relocs *p;
 
-	  if (count != 0)
+	  for (p = *((struct elf_s390_dyn_relocs **)
+		     &elf_section_data (s)->local_dynrel);
+	       p != NULL;
+	       p = p->next)
 	    {
-	      srela = elf_section_data (s)->sreloc;
-	      srela->_raw_size += count * sizeof (Elf64_External_Rela);
+	      if (!bfd_is_abs_section (p->sec)
+		  && bfd_is_abs_section (p->sec->output_section))
+		{
+		  /* Input section has been discarded, either because
+		     it is a copy of a linkonce section or due to
+		     linker script /DISCARD/, so we'll be discarding
+		     the relocs too.  */
+		}
+	      else
+		{
+		  srela = elf_section_data (p->sec)->sreloc;
+		  srela->_raw_size += p->count * sizeof (Elf64_External_Rela);
+		}
 	    }
 	}
 
@@ -1453,7 +1476,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
 	{
 	  if (s->_raw_size != 0 && s != htab->srelplt)
 	    relocs = true;
-	
+
 	  /* We use the reloc_count field as a counter if we need
 	     to copy relocs into the output file.  */
 	  s->reloc_count = 0;
@@ -1521,11 +1544,11 @@ elf_s390_size_dynamic_sections (output_bfd, info)
               || !add_dynamic_entry (DT_RELASZ, 0)
               || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
 	    return false;
-	
+
 	  /* If any dynamic relocs apply to a read-only section,
 	     then we need a DT_TEXTREL entry.  */
 	  elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
-	
+
 	  if ((info->flags & DF_TEXTREL) != 0)
 	    {
 	      if (!add_dynamic_entry (DT_TEXTREL, 0))
@@ -1875,8 +1898,14 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
         case R_390_PC32:
 	case R_390_PC32DBL:
         case R_390_PC64:
+	  /* r_symndx will be zero only for relocs against symbols
+	     from removed linkonce sections, or sections discarded by
+	     a linker script.  */
+          if (r_symndx == 0
+              || (input_section->flags & SEC_ALLOC) == 0)
+	    break;
+
           if ((info->shared
-	       && (input_section->flags & SEC_ALLOC) != 0
 	       && ((r_type != R_390_PC16
 		    && r_type != R_390_PC16DBL
 		    && r_type != R_390_PC32
@@ -1888,7 +1917,6 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 			   || (h->elf_link_hash_flags
 			       & ELF_LINK_HASH_DEF_REGULAR) == 0))))
 	      || (!info->shared
-		  && (input_section->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && h->dynindx != -1
 		  && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
@@ -1995,7 +2023,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
       if (r != bfd_reloc_ok)
 	{
 	  const char *name;
-	
+
 	  if (h != NULL)
 	    name = h->root.root.string;
 	  else
@@ -2008,10 +2036,10 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
 	      if (*name == '\0')
 		name = bfd_section_name (input_bfd, sec);
 	    }
-	
+
 	  if (r == bfd_reloc_overflow)
 	    {
-	
+
 	      if (! ((*info->callbacks->reloc_overflow)
 		     (info, name, howto->name, (bfd_vma) 0,
 		      input_bfd, input_section, rel->r_offset)))
@@ -2255,22 +2283,22 @@ elf_s390_finish_dynamic_sections (output_bfd, info)
 	{
 	  Elf_Internal_Dyn dyn;
 	  asection *s;
-	
+
 	  bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
-	
+
 	  switch (dyn.d_tag)
 	    {
 	    default:
 	      continue;
-	
+
 	    case DT_PLTGOT:
 	      dyn.d_un.d_ptr = htab->sgot->output_section->vma;
 	      break;
-	
+
 	    case DT_JMPREL:
 	      dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
 	      break;
-	
+
 	    case DT_PLTRELSZ:
 	      s = htab->srelplt->output_section;
 	      if (s->_cooked_size != 0)
@@ -2278,7 +2306,7 @@ elf_s390_finish_dynamic_sections (output_bfd, info)
 	      else
 		dyn.d_un.d_val = s->_raw_size;
 	      break;
-	
+
 	    case DT_RELASZ:
 	      /* The procedure linkage table relocs (DT_JMPREL) should
 		 not be included in the overall relocs (DT_RELA).
diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c
index cd0d914de5c..eef19aad5db 100644
--- a/bfd/elf64-sparc.c
+++ b/bfd/elf64-sparc.c
@@ -2103,7 +2103,7 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 
       /* When generating a shared object, these relocations are copied
 	 into the output file to be resolved at run time.  */
-      if (info->shared && (input_section->flags & SEC_ALLOC))
+      if (info->shared && r_symndx != 0 && (input_section->flags & SEC_ALLOC))
 	{
 	  switch (r_type)
 	    {
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 9be552d4181..df303e7e034 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -1442,7 +1442,9 @@ elf64_x86_64_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_X86_64_64:
 	  /* FIXME: The ABI says the linker should make sure the value is
 	     the same when it's zeroextended to 64 bit.	 */
-	  if (info->shared && (input_section->flags & SEC_ALLOC) != 0)
+	  if (info->shared
+	      && r_symndx != 0
+	      && (input_section->flags & SEC_ALLOC) != 0)
 	    {
 	      Elf_Internal_Rela outrel;
 	      boolean skip, relocate;
diff --git a/bfd/elflink.h b/bfd/elflink.h
index d1db64a4664..a4fb88d5be5 100644
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -6277,117 +6277,121 @@ elf_link_input_bfd (finfo, input_bfd)
 	      && o->reloc_count > 0)
 	    return false;
 
-	  {
-	    Elf_Internal_Rela *rel, *relend;
-	    /* Run through the relocs looking for any against symbols
-	       from discarded sections and section symbols from
-	       removed link-once sections.  Complain about relocs
-	       against discarded sections.  Zero relocs against removed
-	       link-once sections.  We should really complain if
-	       anything in the final link tries to use it, but
-	       DWARF-based exception handling might have an entry in
-	       .eh_frame to describe a routine in the linkonce section,
-	       and it turns out to be hard to remove the .eh_frame
-	       entry too.  FIXME.  */
-	    rel = internal_relocs;
-	    relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel;
-	    for ( ; rel < relend; rel++)
-	      {
-		unsigned long r_symndx = ELF_R_SYM (rel->r_info);
+	  /* Run through the relocs looking for any against symbols
+	     from discarded sections and section symbols from
+	     removed link-once sections.  Complain about relocs
+	     against discarded sections.  Zero relocs against removed
+	     link-once sections.  We should really complain if
+	     anything in the final link tries to use it, but
+	     DWARF-based exception handling might have an entry in
+	     .eh_frame to describe a routine in the linkonce section,
+	     and it turns out to be hard to remove the .eh_frame
+	     entry too.  FIXME.  */
+	  if (!finfo->info->relocateable)
+	    {
+	      Elf_Internal_Rela *rel, *relend;
 
-		if (r_symndx >= locsymcount
-		    || (elf_bad_symtab (input_bfd)
-			&& finfo->sections[r_symndx] == NULL))
-		  {
-		    struct elf_link_hash_entry *h;
-
-		    h = sym_hashes[r_symndx - extsymoff];
-		    while (h->root.type == bfd_link_hash_indirect
-			   || h->root.type == bfd_link_hash_warning)
-		      h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
-		    /* Complain if the definition comes from a
-		       discarded section.  */
-		    if ((h->root.type == bfd_link_hash_defined
-			 || h->root.type == bfd_link_hash_defweak)
-			&& ! bfd_is_abs_section (h->root.u.def.section)
-			&& bfd_is_abs_section (h->root.u.def.section
-					       ->output_section))
-		      {
+	      rel = internal_relocs;
+	      relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel;
+	      for ( ; rel < relend; rel++)
+		{
+		  unsigned long r_symndx = ELF_R_SYM (rel->r_info);
+
+		  if (r_symndx >= locsymcount
+		      || (elf_bad_symtab (input_bfd)
+			  && finfo->sections[r_symndx] == NULL))
+		    {
+		      struct elf_link_hash_entry *h;
+
+		      h = sym_hashes[r_symndx - extsymoff];
+		      while (h->root.type == bfd_link_hash_indirect
+			     || h->root.type == bfd_link_hash_warning)
+			h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+		      /* Complain if the definition comes from a
+			 discarded section.  */
+		      if ((h->root.type == bfd_link_hash_defined
+			   || h->root.type == bfd_link_hash_defweak)
+			  && ! bfd_is_abs_section (h->root.u.def.section)
+			  && bfd_is_abs_section (h->root.u.def.section
+						 ->output_section))
+			{
 #if BFD_VERSION_DATE < 20031005
-			if ((o->flags & SEC_DEBUGGING) != 0)
-			  {
+			  if ((o->flags & SEC_DEBUGGING) != 0)
+			    {
 #if BFD_VERSION_DATE > 20021005
-			    (*finfo->info->callbacks->warning)
-			      (finfo->info,
-			       _("warning: relocation against removed section; zeroing"),
-				   NULL, input_bfd, o, rel->r_offset);
+			      (*finfo->info->callbacks->warning)
+				(finfo->info,
+				 _("warning: relocation against removed section; zeroing"),
+				 NULL, input_bfd, o, rel->r_offset);
 #endif
 			      memset (rel, 0, sizeof (*rel));
-			  }
-			else
+			    }
+			  else
 #endif
-			  {
-			    if (! ((*finfo->info->callbacks->undefined_symbol)
-				    (finfo->info, h->root.root.string,
-				     input_bfd, o, rel->r_offset,
-				     true)))
-			      return false;
-			  }
-		      }
-		  }
-		else
-		  {
-		    isym = finfo->internal_syms + r_symndx;
-		    if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
-		      {
-			asection *sec = finfo->sections[r_symndx];
+			    {
+			      if (! ((*finfo->info->callbacks->undefined_symbol)
+				     (finfo->info, h->root.root.string,
+				      input_bfd, o, rel->r_offset,
+				      true)))
+				return false;
+			    }
+			}
+		    }
+		  else
+		    {
+		      isym = finfo->internal_syms + r_symndx;
+		      if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+			{
+			  asection *sec = finfo->sections[r_symndx];
 
-			if (sec != NULL
-			    && ! bfd_is_abs_section (sec)
-			    && bfd_is_abs_section (sec->output_section))
-			  {
+			  if (sec != NULL
+			      && ! bfd_is_abs_section (sec)
+			      && bfd_is_abs_section (sec->output_section))
+			    {
 #if BFD_VERSION_DATE < 20031005
-			    if ((o->flags & SEC_DEBUGGING) != 0
-			        || (sec->flags & SEC_LINK_ONCE) != 0)
-			      {
+			      if ((o->flags & SEC_DEBUGGING) != 0
+				  || (sec->flags & SEC_LINK_ONCE) != 0)
+				{
 #if BFD_VERSION_DATE > 20021005
-				(*finfo->info->callbacks->warning)
-				  (finfo->info,
-				   _("warning: relocation against removed section"),
-				   NULL, input_bfd, o, rel->r_offset);
+				  (*finfo->info->callbacks->warning)
+				    (finfo->info,
+				     _("warning: relocation against removed section"),
+				     NULL, input_bfd, o, rel->r_offset);
 #endif
-				memset (rel, 0, sizeof (*rel));
-			      }
-			    else
+				  rel->r_info
+				    = ELF_R_INFO (0, ELF_R_TYPE (rel->r_info));
+				  rel->r_addend = 0;
+				}
+			      else
 #endif
-			      {
-				boolean ok;
-				const char *msg
-				  = _("local symbols in discarded section %s");
-				bfd_size_type amt
-				  = strlen (sec->name) + strlen (msg) - 1;
-				char *buf = (char *) bfd_malloc (amt);
-
-				if (buf != NULL)
-				  sprintf (buf, msg, sec->name);
-				else
-				  buf = (char *) sec->name;
-				ok = (*finfo->info->callbacks
-				      ->undefined_symbol) (finfo->info, buf,
-							   input_bfd, o,
-							   rel->r_offset,
-							   true);
-				if (buf != sec->name)
-				  free (buf);
-				if (!ok)
-				  return false;
-			      }
-			  }
-		      }
-		  }
-	      }
-	  }
+				{
+				  boolean ok;
+				  const char *msg
+				    = _("local symbols in discarded section %s");
+				  bfd_size_type amt
+				    = strlen (sec->name) + strlen (msg) - 1;
+				  char *buf = (char *) bfd_malloc (amt);
+
+				  if (buf != NULL)
+				    sprintf (buf, msg, sec->name);
+				  else
+				    buf = (char *) sec->name;
+				  ok = (*finfo->info->callbacks
+					->undefined_symbol) (finfo->info, buf,
+							     input_bfd, o,
+							     rel->r_offset,
+							     true);
+				  if (buf != sec->name)
+				    free (buf);
+				  if (!ok)
+				    return false;
+				}
+			    }
+			}
+		    }
+		}
+	    }
 
 	  /* Relocate the section by invoking a back end routine.
 
diff --git a/bfd/elfxx-ia64.c b/bfd/elfxx-ia64.c
index fbd264d2ce5..7f4a9910873 100644
--- a/bfd/elfxx-ia64.c
+++ b/bfd/elfxx-ia64.c
@@ -3560,6 +3560,7 @@ elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
 		   /* Don't emit relocs for __GLOB_DATA_PTR on AIX. */
 		   && (!h || strcmp (h->root.root.string,
 				     "__GLOB_DATA_PTR") != 0)))
+	      && r_symndx != 0
 	      && (input_section->flags & SEC_ALLOC) != 0)
 	    {
 	      unsigned int dyn_r_type;
@@ -3754,8 +3755,9 @@ elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
 	case R_IA64_PCREL64MSB:
 	case R_IA64_PCREL64LSB:
 	  /* Install a dynamic relocation for this reloc.  */
-	  if (dynamic_symbol_p
-	      || elfNN_ia64_aix_vec (info->hash->creator))
+	  if ((dynamic_symbol_p
+	       || elfNN_ia64_aix_vec (info->hash->creator))
+	      && r_symndx != 0)
 	    {
 	      BFD_ASSERT (srel != NULL);