X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf64-s390.c;h=6c53ed395eda736f7774cfb5c12b527313943bcd;hb=63c1f59d665542359de4737e3e48033c588f44dc;hp=601aa4374d54ea0a4f972949499576c86528b290;hpb=62d887d4067efbc5b757e03b0fa54f2a4c81befa;p=deliverable%2Fbinutils-gdb.git

diff --git a/bfd/elf64-s390.c b/bfd/elf64-s390.c
index 601aa4374d..6c53ed395e 100644
--- a/bfd/elf64-s390.c
+++ b/bfd/elf64-s390.c
@@ -1,6 +1,5 @@
 /* IBM S/390-specific support for 64-bit ELF
-   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-   2010, 2011, 2012 Free Software Foundation, Inc.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
    Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -26,6 +25,8 @@
 #include "libbfd.h"
 #include "elf-bfd.h"
 #include "elf/s390.h"
+#include "elf-s390.h"
+#include <stdarg.h>
 
 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
    from smaller values.  Start with zero, widen, *then* decrement.  */
@@ -43,7 +44,7 @@ static reloc_howto_type elf_howto_table[] =
 {
   HOWTO (R_390_NONE,		/* type */
 	 0,			/* rightshift */
-	 0,			/* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
+	 3,			/* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
 	 0,			/* bitsize */
 	 FALSE,			/* pc_relative */
 	 0,			/* bitpos */
@@ -338,10 +339,10 @@ elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 	&& strcasecmp (elf_howto_table[i].name, r_name) == 0)
       return &elf_howto_table[i];
 
-    if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
-      return &elf64_s390_vtinherit_howto;
-    if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
-      return &elf64_s390_vtentry_howto;
+  if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
+    return &elf64_s390_vtinherit_howto;
+  if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
+    return &elf64_s390_vtentry_howto;
 
   return NULL;
 }
@@ -368,8 +369,9 @@ elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
     default:
       if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
 	{
-	  (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
-				 abfd, (int) r_type);
+	  /* xgettext:c-format */
+	  _bfd_error_handler (_("%B: invalid relocation type %d"),
+			      abfd, (int) r_type);
 	  r_type = R_390_NONE;
 	}
       cache_ptr->howto = &elf_howto_table[r_type];
@@ -493,8 +495,8 @@ elf_s390_is_local_label_name (bfd *abfd, const char *name)
 
    The GOT holds the address in the PLT to be executed.
    The loader then gets:
-   24(15) =  Pointer to the structure describing the object.
-   28(15) =  Offset in symbol table
+   48(15) =  Pointer to the structure describing the object.
+   56(15) =  Offset in symbol table
    The loader  must  then find the module where the function is
    and insert the address in the GOT.
 
@@ -650,8 +652,6 @@ struct elf_s390_link_hash_table
   struct elf_link_hash_table elf;
 
   /* Short-cuts to get to dynamic linker sections.  */
-  asection *sdynbss;
-  asection *srelbss;
   asection *irelifunc;
 
   union {
@@ -661,13 +661,16 @@ struct elf_s390_link_hash_table
 
   /* Small local sym cache.  */
   struct sym_cache sym_cache;
+
+  /* Options passed from the linker.  */
+  struct s390_elf_params *params;
 };
 
 /* Get the s390 ELF linker hash table from a link_info structure.  */
 
-#define elf_s390_hash_table(p) \
-  (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
-  == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
+#define elf_s390_hash_table(p)						\
+  (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash))	\
+   == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
 
 #define ELF64 1
 #include "elf-s390-common.c"
@@ -729,63 +732,6 @@ elf_s390_link_hash_table_create (bfd *abfd)
   return &ret->elf.root;
 }
 
-/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
-   shortcuts to them in our hash table.  */
-
-static bfd_boolean
-create_got_section (bfd *dynobj,
-		    struct bfd_link_info *info)
-{
-  struct elf_s390_link_hash_table *htab;
-
-  if (! _bfd_elf_create_got_section (dynobj, info))
-    return FALSE;
-
-  htab = elf_s390_hash_table (info);
-  if (htab == NULL)
-    return FALSE;
-
-  htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
-  htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
-  htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
-  if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
-    abort ();
-  return TRUE;
-}
-
-/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
-   .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
-   hash table.  */
-
-static bfd_boolean
-elf_s390_create_dynamic_sections (bfd *dynobj,
-				  struct bfd_link_info *info)
-{
-  struct elf_s390_link_hash_table *htab;
-
-  htab = elf_s390_hash_table (info);
-  if (htab == NULL)
-    return FALSE;
-
-  if (!htab->elf.sgot && !create_got_section (dynobj, info))
-    return FALSE;
-
-  if (!_bfd_elf_create_dynamic_sections (dynobj, info))
-    return FALSE;
-
-  htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
-  htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
-  htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
-  if (!info->shared)
-    htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
-
-  if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
-      || (!info->shared && !htab->srelbss))
-    abort ();
-
-  return TRUE;
-}
-
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
@@ -843,7 +789,8 @@ elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
       /* If called to transfer flags for a weakdef during processing
 	 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
 	 We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
-      dir->ref_dynamic |= ind->ref_dynamic;
+      if (dir->versioned != versioned_hidden)
+	dir->ref_dynamic |= ind->ref_dynamic;
       dir->ref_regular |= ind->ref_regular;
       dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
       dir->needs_plt |= ind->needs_plt;
@@ -857,7 +804,7 @@ elf_s390_tls_transition (struct bfd_link_info *info,
 			 int r_type,
 			 int is_local)
 {
-  if (info->shared)
+  if (bfd_link_pic (info))
     return r_type;
 
   switch (r_type)
@@ -897,7 +844,7 @@ elf_s390_check_relocs (bfd *abfd,
   bfd_signed_vma *local_got_refcounts;
   int tls_type, old_tls_type;
 
-  if (info->relocatable)
+  if (bfd_link_relocatable (info))
     return TRUE;
 
   BFD_ASSERT (is_s390_elf (abfd));
@@ -916,7 +863,7 @@ elf_s390_check_relocs (bfd *abfd,
   for (rel = relocs; rel < rel_end; rel++)
     {
       unsigned int r_type;
-      unsigned long r_symndx;
+      unsigned int r_symndx;
       struct elf_link_hash_entry *h;
       Elf_Internal_Sym *isym;
 
@@ -924,9 +871,9 @@ elf_s390_check_relocs (bfd *abfd,
 
       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
 	{
-	  (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
-				 abfd,
-				 r_symndx);
+	  /* xgettext:c-format */
+	  _bfd_error_handler (_("%B: bad symbol index: %d"),
+			      abfd, r_symndx);
 	  return FALSE;
 	}
 
@@ -965,10 +912,6 @@ elf_s390_check_relocs (bfd *abfd,
 	  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;
-
-	  /* PR15323, ref flags aren't set for references in the same
-	     object.  */
-	  h->root.non_ir_ref = 1;
 	}
 
       /* Create got section and local_got_refcounts array if they
@@ -1015,7 +958,7 @@ elf_s390_check_relocs (bfd *abfd,
 	    {
 	      if (htab->elf.dynobj == NULL)
 		htab->elf.dynobj = abfd;
-	      if (!create_got_section (htab->elf.dynobj, info))
+	      if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
 		return FALSE;
 	    }
 	}
@@ -1041,9 +984,6 @@ elf_s390_check_relocs (bfd *abfd,
 
       switch (r_type)
 	{
-	case R_390_GOTOFF16:
-	case R_390_GOTOFF32:
-	case R_390_GOTOFF64:
 	case R_390_GOTPC:
 	case R_390_GOTPCDBL:
 	  /* These relocs do not need a GOT slot.  They just load the
@@ -1051,6 +991,12 @@ elf_s390_check_relocs (bfd *abfd,
 	     the GOT.  Since the GOT pointer has been set up above we
 	     are done.  */
 	  break;
+	case R_390_GOTOFF16:
+	case R_390_GOTOFF32:
+	case R_390_GOTOFF64:
+	  if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
+	    break;
+	  /* Fall through.  */
 
 	case R_390_PLT12DBL:
 	case R_390_PLT16DBL:
@@ -1110,7 +1056,7 @@ elf_s390_check_relocs (bfd *abfd,
 	case R_390_TLS_GOTIE20:
 	case R_390_TLS_GOTIE64:
 	case R_390_TLS_IEENT:
-	  if (info->shared)
+	  if (bfd_link_pic (info))
 	    info->flags |= DF_STATIC_TLS;
 	  /* Fall through */
 
@@ -1162,7 +1108,8 @@ elf_s390_check_relocs (bfd *abfd,
 	    {
 	      if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
 		{
-		  (*_bfd_error_handler)
+		  _bfd_error_handler
+		    /* xgettext:c-format */
 		    (_("%B: `%s' accessed both as normal and thread local symbol"),
 		     abfd, h->root.root.string);
 		  return FALSE;
@@ -1184,7 +1131,13 @@ elf_s390_check_relocs (bfd *abfd,
 	  /* Fall through */
 
 	case R_390_TLS_LE64:
-	  if (!info->shared)
+	  /* For static linking and executables this reloc will be
+	     calculated at linktime otherwise a TLS_TPOFF runtime
+	     reloc will be generated.  */
+	  if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
+	    break;
+
+	  if (!bfd_link_pic (info))
 	    break;
 	  info->flags |= DF_STATIC_TLS;
 	  /* Fall through */
@@ -1200,7 +1153,7 @@ elf_s390_check_relocs (bfd *abfd,
 	case R_390_PC32:
 	case R_390_PC32DBL:
 	case R_390_PC64:
-	  if (h != NULL)
+	  if (h != NULL && bfd_link_executable (info))
 	    {
 	      /* If this reloc is in a read-only section, we might
 		 need a copy reloc.  We can't check reliably at this
@@ -1210,7 +1163,7 @@ elf_s390_check_relocs (bfd *abfd,
 		 adjust_dynamic_symbol.  */
 	      h->non_got_ref = 1;
 
-	      if (!info->shared)
+	      if (!bfd_link_pic (info))
 		{
 		  /* We may need a .plt entry if the function this reloc
 		     refers to is in a shared lib.  */
@@ -1239,7 +1192,7 @@ elf_s390_check_relocs (bfd *abfd,
 	     may need to keep relocations for symbols satisfied by a
 	     dynamic library if we manage to avoid copy relocs for the
 	     symbol.  */
-	  if ((info->shared
+	  if ((bfd_link_pic (info)
 	       && (sec->flags & SEC_ALLOC) != 0
 	       && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
@@ -1253,7 +1206,7 @@ elf_s390_check_relocs (bfd *abfd,
 			   || h->root.type == bfd_link_hash_defweak
 			   || !h->def_regular))))
 	      || (ELIMINATE_COPY_RELOCS
-		  && !info->shared
+		  && !bfd_link_pic (info)
 		  && (sec->flags & SEC_ALLOC) != 0
 		  && h != NULL
 		  && (h->root.type == bfd_link_hash_defweak
@@ -1376,179 +1329,6 @@ elf_s390_gc_mark_hook (asection *sec,
   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
 }
 
-/* Update the got entry reference counts for the section being removed.  */
-
-static bfd_boolean
-elf_s390_gc_sweep_hook (bfd *abfd,
-			struct bfd_link_info *info,
-			asection *sec,
-			const Elf_Internal_Rela *relocs)
-{
-  struct elf_s390_link_hash_table *htab;
-  Elf_Internal_Shdr *symtab_hdr;
-  struct elf_link_hash_entry **sym_hashes;
-  bfd_signed_vma *local_got_refcounts;
-  const Elf_Internal_Rela *rel, *relend;
-
-  if (info->relocatable)
-    return TRUE;
-
-  htab = elf_s390_hash_table (info);
-  if (htab == NULL)
-    return FALSE;
-
-  elf_section_data (sec)->local_dynrel = NULL;
-
-  symtab_hdr = &elf_symtab_hdr (abfd);
-  sym_hashes = elf_sym_hashes (abfd);
-  local_got_refcounts = elf_local_got_refcounts (abfd);
-
-  relend = relocs + sec->reloc_count;
-  for (rel = relocs; rel < relend; rel++)
-    {
-      unsigned long r_symndx;
-      unsigned int r_type;
-      struct elf_link_hash_entry *h = NULL;
-
-      r_symndx = ELF64_R_SYM (rel->r_info);
-      if (r_symndx >= symtab_hdr->sh_info)
-	{
-	  struct elf_s390_link_hash_entry *eh;
-	  struct elf_dyn_relocs **pp;
-	  struct elf_dyn_relocs *p;
-
-	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-	  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;
-	  eh = (struct elf_s390_link_hash_entry *) h;
-
-	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
-	    if (p->sec == sec)
-	      {
-		/* Everything must go for SEC.  */
-		*pp = p->next;
-		break;
-	      }
-	}
-      else
-	{
-	  Elf_Internal_Sym *isym;
-
-	  /* A local symbol.  */
-	  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
-					abfd, r_symndx);
-	  if (isym == NULL)
-	    return FALSE;
-
-	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
-	    {
-	      struct plt_entry *plt = elf_s390_local_plt (abfd);
-	      if (plt[r_symndx].plt.refcount > 0)
-		plt[r_symndx].plt.refcount--;
-	    }
-	}
-
-      r_type = ELF64_R_TYPE (rel->r_info);
-      r_type = elf_s390_tls_transition (info, r_type, h != NULL);
-      switch (r_type)
-	{
-	case R_390_TLS_LDM64:
-	  if (htab->tls_ldm_got.refcount > 0)
-	    htab->tls_ldm_got.refcount -= 1;
-	  break;
-
-	case R_390_TLS_GD64:
-	case R_390_TLS_IE64:
-	case R_390_TLS_GOTIE12:
-	case R_390_TLS_GOTIE20:
-	case R_390_TLS_GOTIE64:
-	case R_390_TLS_IEENT:
-	case R_390_GOT12:
-	case R_390_GOT16:
-	case R_390_GOT20:
-	case R_390_GOT32:
-	case R_390_GOT64:
-	case R_390_GOTOFF16:
-	case R_390_GOTOFF32:
-	case R_390_GOTOFF64:
-	case R_390_GOTPC:
-	case R_390_GOTPCDBL:
-	case R_390_GOTENT:
-	  if (h != NULL)
-	    {
-	      if (h->got.refcount > 0)
-		h->got.refcount -= 1;
-	    }
-	  else if (local_got_refcounts != NULL)
-	    {
-	      if (local_got_refcounts[r_symndx] > 0)
-		local_got_refcounts[r_symndx] -= 1;
-	    }
-	  break;
-
-	case R_390_8:
-	case R_390_12:
-	case R_390_16:
-	case R_390_20:
-	case R_390_32:
-	case R_390_64:
-	case R_390_PC16:
-	case R_390_PC12DBL:
-	case R_390_PC16DBL:
-	case R_390_PC24DBL:
-	case R_390_PC32:
-	case R_390_PC32DBL:
-	case R_390_PC64:
-	  if (info->shared)
-	    break;
-	  /* Fall through */
-
-	case R_390_PLT12DBL:
-	case R_390_PLT16DBL:
-	case R_390_PLT24DBL:
-	case R_390_PLT32:
-	case R_390_PLT32DBL:
-	case R_390_PLT64:
-	case R_390_PLTOFF16:
-	case R_390_PLTOFF32:
-	case R_390_PLTOFF64:
-	  if (h != NULL)
-	    {
-	      if (h->plt.refcount > 0)
-		h->plt.refcount -= 1;
-	    }
-	  break;
-
-	case R_390_GOTPLT12:
-	case R_390_GOTPLT16:
-	case R_390_GOTPLT20:
-	case R_390_GOTPLT32:
-	case R_390_GOTPLT64:
-	case R_390_GOTPLTENT:
-	  if (h != NULL)
-	    {
-	      if (h->plt.refcount > 0)
-		{
-		  ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
-		  h->plt.refcount -= 1;
-		}
-	    }
-	  else if (local_got_refcounts != NULL)
-	    {
-	      if (local_got_refcounts[r_symndx] > 0)
-		local_got_refcounts[r_symndx] -= 1;
-	    }
-	  break;
-
-	default:
-	  break;
-	}
-    }
-
-  return TRUE;
-}
-
 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
    entry but we found we will not create any.  Called when we find we will
    not have any PLT for this symbol, by for example
@@ -1571,6 +1351,23 @@ elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
   h->gotplt_refcount = -1;
 }
 
+/* Find dynamic relocs for H that apply to read-only sections.  */
+
+static asection *
+readonly_dynrelocs (struct elf_link_hash_entry *h)
+{
+  struct elf_dyn_relocs *p;
+
+  for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
+    {
+      asection *s = p->sec->output_section;
+
+      if (s != NULL && (s->flags & SEC_READONLY) != 0)
+	return p->sec;
+    }
+  return NULL;
+}
+
 /* Adjust a symbol defined by a dynamic object and referenced by a
    regular object.  The current definition is in some section of the
    dynamic object, but we're not including those sections.  We have to
@@ -1582,11 +1379,51 @@ elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
 				struct elf_link_hash_entry *h)
 {
   struct elf_s390_link_hash_table *htab;
-  asection *s;
+  asection *s, *srel;
 
   /* STT_GNU_IFUNC symbol must go through PLT. */
   if (s390_is_ifunc_symbol_p (h))
-    return TRUE;
+    {
+      /* All local STT_GNU_IFUNC references must be treated as local
+	 calls via local PLT.  */
+      if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
+	{
+	  bfd_size_type pc_count = 0, count = 0;
+	  struct elf_dyn_relocs **pp;
+	  struct elf_s390_link_hash_entry *eh;
+	  struct elf_dyn_relocs *p;
+
+	  eh = (struct elf_s390_link_hash_entry *) h;
+	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+	    {
+	      pc_count += p->pc_count;
+	      p->count -= p->pc_count;
+	      p->pc_count = 0;
+	      count += p->count;
+	      if (p->count == 0)
+		*pp = p->next;
+	      else
+		pp = &p->next;
+	    }
+
+	  if (pc_count || count)
+	    {
+	      h->needs_plt = 1;
+	      h->non_got_ref = 1;
+	      if (h->plt.refcount <= 0)
+		h->plt.refcount = 1;
+	      else
+		h->plt.refcount += 1;
+	    }
+	}
+
+      if (h->plt.refcount <= 0)
+	{
+	  h->plt.offset = (bfd_vma) -1;
+	  h->needs_plt = 0;
+	}
+      return TRUE;
+    }
 
   /* If this is a function, put it in the procedure linkage table.  We
      will fill in the contents of the procedure linkage table later
@@ -1622,14 +1459,14 @@ elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
   /* If this is a weak symbol, and there is a real definition, the
      processor independent code will have arranged for us to see the
      real definition first, and we can just use the same value.  */
-  if (h->u.weakdef != NULL)
+  if (h->is_weakalias)
     {
-      BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
-		  || h->u.weakdef->root.type == bfd_link_hash_defweak);
-      h->root.u.def.section = h->u.weakdef->root.u.def.section;
-      h->root.u.def.value = h->u.weakdef->root.u.def.value;
+      struct elf_link_hash_entry *def = weakdef (h);
+      BFD_ASSERT (def->root.type == bfd_link_hash_defined);
+      h->root.u.def.section = def->root.u.def.section;
+      h->root.u.def.value = def->root.u.def.value;
       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
-	h->non_got_ref = h->u.weakdef->non_got_ref;
+	h->non_got_ref = def->non_got_ref;
       return TRUE;
     }
 
@@ -1640,7 +1477,7 @@ elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
      only references to the symbol are via the global offset table.
      For such cases we need not do anything here; the relocations will
      be handled correctly by relocate_section.  */
-  if (info->shared)
+  if (bfd_link_pic (info))
     return TRUE;
 
   /* If there are no references to this symbol that do not use the
@@ -1694,15 +1531,23 @@ elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
   /* We must generate a R_390_COPY reloc to tell the dynamic linker to
      copy the initial value out of the dynamic object and into the
      runtime process image.  */
+  if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
+    {
+      s = htab->elf.sdynrelro;
+      srel = htab->elf.sreldynrelro;
+    }
+  else
+    {
+      s = htab->elf.sdynbss;
+      srel = htab->elf.srelbss;
+    }
   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
     {
-      htab->srelbss->size += sizeof (Elf64_External_Rela);
+      srel->size += sizeof (Elf64_External_Rela);
       h->needs_copy = 1;
     }
 
-  s = htab->sdynbss;
-
-  return _bfd_elf_adjust_dynamic_copy (h, s);
+  return _bfd_elf_adjust_dynamic_copy (info, h, s);
 }
 
 /* Allocate space in .plt, .got and associated reloc sections for
@@ -1728,8 +1573,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
   /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
      here if it is defined and referenced in a non-shared object.  */
   if (s390_is_ifunc_symbol_p (h) && h->def_regular)
-    return s390_elf_allocate_ifunc_dyn_relocs (info, h,
-					       &eh->dyn_relocs);
+    return s390_elf_allocate_ifunc_dyn_relocs (info, h);
   else if (htab->elf.dynamic_sections_created
 	   && h->plt.refcount > 0)
     {
@@ -1742,7 +1586,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
 	    return FALSE;
 	}
 
-      if (info->shared
+      if (bfd_link_pic (info)
 	  || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
 	{
 	  asection *s = htab->elf.splt;
@@ -1759,7 +1603,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
 	     location in the .plt.  This is required to make function
 	     pointers compare as equal between the normal executable and
 	     the shared library.  */
-	  if (! info->shared
+	  if (! bfd_link_pic (info)
 	      && !h->def_regular)
 	    {
 	      h->root.u.def.section = s;
@@ -1795,7 +1639,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
      to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
      we can save the dynamic TLS relocation.  */
   if (h->got.refcount > 0
-      && !info->shared
+      && !bfd_link_pic (info)
       && h->dynindx == -1
       && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
     {
@@ -1841,7 +1685,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
 	htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
       else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
 		|| h->root.type != bfd_link_hash_undefweak)
-	       && (info->shared
+	       && (bfd_link_pic (info)
 		   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
 	htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
     }
@@ -1857,7 +1701,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
      space for pc-relative relocs that have become local due to symbol
      visibility changes.  */
 
-  if (info->shared)
+  if (bfd_link_pic (info))
     {
       if (SYMBOL_CALLS_LOCAL (info, h))
 	{
@@ -1879,7 +1723,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
       if (eh->dyn_relocs != NULL
 	  && h->root.type == bfd_link_hash_undefweak)
 	{
-	  if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+	  if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+	      || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
 	    eh->dyn_relocs = NULL;
 
 	  /* Make sure undefined weak symbols are output as a dynamic
@@ -1935,28 +1780,29 @@ allocate_dynrelocs (struct elf_link_hash_entry *h,
   return TRUE;
 }
 
-/* Find any dynamic relocs that apply to read-only sections.  */
+/* Set DF_TEXTREL if we find any dynamic relocs that apply to
+   read-only sections.  */
 
 static bfd_boolean
-readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
+maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
 {
-  struct elf_s390_link_hash_entry *eh;
-  struct elf_dyn_relocs *p;
+  asection *sec;
 
-  eh = (struct elf_s390_link_hash_entry *) h;
-  for (p = eh->dyn_relocs; p != NULL; p = p->next)
-    {
-      asection *s = p->sec->output_section;
+  if (h->root.type == bfd_link_hash_indirect)
+    return TRUE;
 
-      if (s != NULL && (s->flags & SEC_READONLY) != 0)
-	{
-	  struct bfd_link_info *info = (struct bfd_link_info *) inf;
+  sec = readonly_dynrelocs (h);
+  if (sec != NULL)
+    {
+      struct bfd_link_info *info = (struct bfd_link_info *) info_p;
 
-	  info->flags |= DF_TEXTREL;
+      info->flags |= DF_TEXTREL;
+      info->callbacks->minfo
+	(_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
+	 sec->owner, h->root.root.string, sec);
 
-	  /* Not an error, just cut short the traversal.  */
-	  return FALSE;
-	}
+      /* Not an error, just cut short the traversal.  */
+      return FALSE;
     }
   return TRUE;
 }
@@ -1984,7 +1830,7 @@ elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
   if (htab->elf.dynamic_sections_created)
     {
       /* Set the contents of the .interp section to the interpreter.  */
-      if (info->executable)
+      if (bfd_link_executable (info) && !info->nointerp)
 	{
 	  s = bfd_get_linker_section (dynobj, ".interp");
 	  if (s == NULL)
@@ -1996,7 +1842,7 @@ elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 
   /* Set up .got offsets for local syms, and space for local dynamic
      relocs.  */
-  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
     {
       bfd_signed_vma *local_got;
       bfd_signed_vma *end_local_got;
@@ -2052,7 +1898,7 @@ elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 	      s->size += GOT_ENTRY_SIZE;
 	      if (*local_tls_type == GOT_TLS_GD)
 		s->size += GOT_ENTRY_SIZE;
-	      if (info->shared)
+	      if (bfd_link_pic (info))
 		srela->size += sizeof (Elf64_External_Rela);
 	    }
 	  else
@@ -2100,7 +1946,8 @@ elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
       if (s == htab->elf.splt
 	  || s == htab->elf.sgot
 	  || s == htab->elf.sgotplt
-	  || s == htab->sdynbss
+	  || s == htab->elf.sdynbss
+	  || s == htab->elf.sdynrelro
 	  || s == htab->elf.iplt
 	  || s == htab->elf.igotplt
 	  || s == htab->irelifunc)
@@ -2162,7 +2009,7 @@ elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 #define add_dynamic_entry(TAG, VAL) \
   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
 
-      if (info->executable)
+      if (bfd_link_executable (info))
 	{
 	  if (!add_dynamic_entry (DT_DEBUG, 0))
 	    return FALSE;
@@ -2187,8 +2034,7 @@ elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 	  /* If any dynamic relocs apply to a read-only section,
 	     then we need a DT_TEXTREL entry.  */
 	  if ((info->flags & DF_TEXTREL) == 0)
-	    elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
-				    info);
+	    elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
 
 	  if ((info->flags & DF_TEXTREL) != 0)
 	    {
@@ -2240,11 +2086,12 @@ invalid_tls_insn (bfd *input_bfd,
   reloc_howto_type *howto;
 
   howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
-  (*_bfd_error_handler)
-    (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
+  _bfd_error_handler
+    /* xgettext:c-format */
+    (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"),
      input_bfd,
      input_section,
-     (long) rel->r_offset,
+     rel->r_offset,
      howto->name);
   bfd_set_error (bfd_error_bad_value);
 }
@@ -2294,6 +2141,7 @@ elf_s390_relocate_section (bfd *output_bfd,
       bfd_reloc_status_type r;
       int tls_type;
       asection *base_got = htab->elf.sgot;
+      bfd_boolean resolved_to_zero;
 
       r_type = ELF64_R_TYPE (rel->r_info);
       if (r_type == (int) R_390_GNU_VTINHERIT
@@ -2386,9 +2234,12 @@ elf_s390_relocate_section (bfd *output_bfd,
 	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
 					 rel, 1, relend, howto, 0, contents);
 
-      if (info->relocatable)
+      if (bfd_link_relocatable (info))
 	continue;
 
+      resolved_to_zero = (h != NULL
+			  && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
+
       switch (r_type)
 	{
 	case R_390_GOTPLT12:
@@ -2426,7 +2277,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 		    PLT_ENTRY_SIZE;
 
 		  /* Offset in GOT is PLT index plus GOT headers(3)
-		     times 4, addr & GOT addr.  */
+		     times 8, addr & GOT addr.  */
 		  relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
 		  if (r_type == R_390_GOTPLTENT)
 		    relocation += htab->elf.sgot->output_section->vma;
@@ -2471,8 +2322,10 @@ elf_s390_relocate_section (bfd *output_bfd,
 			 finish_dynamic_symbol.  */
 		    }
 		}
-	      else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
-		       || (info->shared
+	      else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
+							  bfd_link_pic (info),
+							  h)
+		       || (bfd_link_pic (info)
 			   && SYMBOL_REFERENCES_LOCAL (info, h))
 		       || (ELF_ST_VISIBILITY (h->other)
 			   && h->root.type == bfd_link_hash_undefweak))
@@ -2499,7 +2352,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 		    }
 
 		  if ((h->def_regular
-		       && info->shared
+		       && bfd_link_pic (info)
 		       && SYMBOL_REFERENCES_LOCAL (info, h))
 		      /* lgrl rx,sym@GOTENT -> larl rx, sym */
 		      && ((r_type == R_390_GOTENT
@@ -2549,7 +2402,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 		  bfd_put_64 (output_bfd, relocation,
 			      htab->elf.sgot->contents + off);
 
-		  if (info->shared)
+		  if (bfd_link_pic (info))
 		    {
 		      asection *s;
 		      Elf_Internal_Rela outrel;
@@ -2594,6 +2447,18 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  /* Relocation is relative to the start of the global offset
 	     table.  */
 
+	  if (h != NULL
+	      && s390_is_ifunc_symbol_p (h)
+	      && h->def_regular
+	      && !bfd_link_executable (info))
+	    {
+	      relocation = (htab->elf.iplt->output_section->vma
+			    + htab->elf.iplt->output_offset
+			    + h->plt.offset
+			    - htab->elf.sgot->output_section->vma);
+	      goto do_relocation;
+	    }
+
 	  /* Note that sgot->output_offset is not involved in this
 	     calculation.  We always want the start of .got.  If we
 	     defined _GLOBAL_OFFSET_TABLE in a different way, as is
@@ -2671,10 +2536,6 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  unresolved_reloc = FALSE;
 	  break;
 
-	case R_390_8:
-	case R_390_16:
-	case R_390_32:
-	case R_390_64:
 	case R_390_PC16:
 	case R_390_PC12DBL:
 	case R_390_PC16DBL:
@@ -2682,15 +2543,47 @@ elf_s390_relocate_section (bfd *output_bfd,
 	case R_390_PC32:
 	case R_390_PC32DBL:
 	case R_390_PC64:
+	  if (h != NULL
+	      && bfd_link_pie (info)
+	      && !h->def_regular)
+	    {
+	      _bfd_error_handler (_("%B: `%s' non-PLT reloc for symbol defined "
+				    "in shared library and accessed "
+				    "from executable "
+				    "(rebuild file with -fPIC ?)"),
+				  input_bfd, h->root.root.string);
+	      bfd_set_error (bfd_error_bad_value);
+	      return FALSE;
+	    }
+	  /* The target of these relocs are instruction operands
+	     residing in read-only sections.  We cannot emit a runtime
+	     reloc for it.  */
+	  if (h != NULL
+	      && s390_is_ifunc_symbol_p (h)
+	      && h->def_regular
+	      && bfd_link_pic (info))
+	    {
+	      relocation = (htab->elf.iplt->output_section->vma
+			    + htab->elf.iplt->output_offset
+			    + h->plt.offset);
+	      goto do_relocation;
+	    }
+	  /* Fall through.  */
+
+	case R_390_8:
+	case R_390_16:
+	case R_390_32:
+	case R_390_64:
 
 	  if (h != NULL
 	      && s390_is_ifunc_symbol_p (h)
 	      && h->def_regular)
 	    {
-	      if (!info->shared || !h->non_got_ref)
+	      if (!bfd_link_pic (info))
 		{
-		  /* For a non-shared object STT_GNU_IFUNC symbol must
-		     go through PLT.  */
+		  /* For a non-shared object the symbol will not
+		     change.  Hence we can write the address of the
+		     target IPLT slot now.  */
 		  relocation = (htab->elf.iplt->output_section->vma
 				+ htab->elf.iplt->output_offset
 				+ h ->plt.offset);
@@ -2718,7 +2611,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 
 		  if (h->dynindx == -1
 		      || h->forced_local
-		      || info->executable)
+		      || bfd_link_executable (info))
 		    {
 		      /* This symbol is resolved locally.  */
 		      outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
@@ -2747,9 +2640,10 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  if ((input_section->flags & SEC_ALLOC) == 0)
 	    break;
 
-	  if ((info->shared
+	  if ((bfd_link_pic (info)
 	       && (h == NULL
-		   || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+		   || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+		       && !resolved_to_zero)
 		   || h->root.type != bfd_link_hash_undefweak)
 	       && ((r_type != R_390_PC16
 		    && r_type != R_390_PC12DBL
@@ -2760,7 +2654,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 		    && r_type != R_390_PC64)
 		   || !SYMBOL_CALLS_LOCAL (info, h)))
 	      || (ELIMINATE_COPY_RELOCS
-		  && !info->shared
+		  && !bfd_link_pic (info)
 		  && h != NULL
 		  && h->dynindx != -1
 		  && !h->non_got_ref
@@ -2802,7 +2696,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 			   || r_type == R_390_PC32
 			   || r_type == R_390_PC32DBL
 			   || r_type == R_390_PC64
-			   || !info->shared
+			   || !bfd_link_pic (info)
 			   || !SYMBOLIC_BIND (info, h)
 			   || !h->def_regular))
 		{
@@ -2874,7 +2768,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 
 	  /* Relocations for tls literal pool entries.  */
 	case R_390_TLS_IE64:
-	  if (info->shared)
+	  if (bfd_link_pic (info))
 	    {
 	      Elf_Internal_Rela outrel;
 	      asection *sreloc;
@@ -2902,7 +2796,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  else if (h != NULL)
 	    {
 	      tls_type = elf_s390_hash_entry(h)->tls_type;
-	      if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
+	      if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
 		r_type = R_390_TLS_LE64;
 	    }
 	  if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
@@ -3013,14 +2907,14 @@ elf_s390_relocate_section (bfd *output_bfd,
 	      if (local_got_offsets == NULL)
 		abort();
 	      off = local_got_offsets[r_symndx];
-	      if (info->shared)
+	      if (bfd_link_pic (info))
 		goto emit_tls_relocs;
 	    }
 	  else
 	    {
 	      off = h->got.offset;
 	      tls_type = elf_s390_hash_entry(h)->tls_type;
-	      if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
+	      if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
 		goto emit_tls_relocs;
 	    }
 
@@ -3037,7 +2931,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  break;
 
 	case R_390_TLS_LDM64:
-	  if (! info->shared)
+	  if (! bfd_link_pic (info))
 	    /* The literal pool entry this relocation refers to gets ignored
 	       by the optimized code of the local exec model. Do nothing
 	       and the value will turn out zero.  */
@@ -3075,7 +2969,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  break;
 
 	case R_390_TLS_LE64:
-	  if (info->shared)
+	  if (bfd_link_dll (info))
 	    {
 	      /* Linking a shared library with non-fpic code requires
 		 a R_390_TLS_TPOFF relocation.  */
@@ -3112,7 +3006,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 	  continue;
 
 	case R_390_TLS_LDO64:
-	  if (info->shared || (input_section->flags & SEC_DEBUGGING))
+	  if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
 	    relocation -= dtpoff_base (info);
 	  else
 	    /* When converting LDO to LE, we must negate.  */
@@ -3134,7 +3028,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 
 	  if (r_type == R_390_TLS_LOAD)
 	    {
-	      if (!info->shared && (h == NULL || h->dynindx == -1))
+	      if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
 		{
 		  /* IE->LE transition. Four valid cases:
 		     lg %rx,(0,%ry)    -> sllg %rx,%ry,0
@@ -3146,8 +3040,10 @@ elf_s390_relocate_section (bfd *output_bfd,
 		  insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
 		  insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
 		  if (insn1 != 0x0004)
-		    invalid_tls_insn (input_bfd, input_section, rel);
-		  ry = 0;
+		    {
+		      invalid_tls_insn (input_bfd, input_section, rel);
+		      return FALSE;
+		    }
 		  if ((insn0 & 0xff00f000) == 0xe3000000)
 		    /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0  */
 		    ry = (insn0 & 0x000f0000);
@@ -3161,7 +3057,10 @@ elf_s390_relocate_section (bfd *output_bfd,
 		    /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0  */
 		    ry = (insn0 & 0x0000f000) << 4;
 		  else
-		    invalid_tls_insn (input_bfd, input_section, rel);
+		    {
+		      invalid_tls_insn (input_bfd, input_section, rel);
+		      return FALSE;
+		    }
 		  insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
 		  insn1 = 0x000d;
 		  bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
@@ -3175,8 +3074,11 @@ elf_s390_relocate_section (bfd *output_bfd,
 	      insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
 	      insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
 	      if ((insn0 & 0xffff0000) != 0xc0e50000)
-		invalid_tls_insn (input_bfd, input_section, rel);
-	      if (!info->shared && (h == NULL || h->dynindx == -1))
+		{
+		  invalid_tls_insn (input_bfd, input_section, rel);
+		  return FALSE;
+		}
+	      if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
 		{
 		  /* GD->LE transition.
 		     brasl %r14,__tls_get_addr@plt -> brcl 0,. */
@@ -3195,14 +3097,17 @@ elf_s390_relocate_section (bfd *output_bfd,
 	    }
 	  else if (r_type == R_390_TLS_LDCALL)
 	    {
-	      if (!info->shared)
+	      if (!bfd_link_pic (info))
 		{
 		  unsigned int insn0, insn1;
 
 		  insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
 		  insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
 		  if ((insn0 & 0xffff0000) != 0xc0e50000)
-		    invalid_tls_insn (input_bfd, input_section, rel);
+		    {
+		      invalid_tls_insn (input_bfd, input_section, rel);
+		      return FALSE;
+		    }
 		  /* LD->LE transition.
 		     brasl %r14,__tls_get_addr@plt -> brcl 0,. */
 		  insn0 = 0xc0040000;
@@ -3225,11 +3130,12 @@ elf_s390_relocate_section (bfd *output_bfd,
 	       && h->def_dynamic)
 	  && _bfd_elf_section_offset (output_bfd, info, input_section,
 				      rel->r_offset) != (bfd_vma) -1)
-	(*_bfd_error_handler)
-	  (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+	_bfd_error_handler
+	  /* xgettext:c-format */
+	  (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
 	   input_bfd,
 	   input_section,
-	   (long) rel->r_offset,
+	   rel->r_offset,
 	   howto->name,
 	   h->root.root.string);
 
@@ -3276,20 +3182,16 @@ elf_s390_relocate_section (bfd *output_bfd,
 	    }
 
 	  if (r == bfd_reloc_overflow)
-	    {
-
-	      if (! ((*info->callbacks->reloc_overflow)
-		     (info, (h ? &h->root : NULL), name, howto->name,
-		      (bfd_vma) 0, input_bfd, input_section,
-		      rel->r_offset)))
-		return FALSE;
-	    }
+	    (*info->callbacks->reloc_overflow)
+	      (info, (h ? &h->root : NULL), name, howto->name,
+	       (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
 	  else
 	    {
-	      (*_bfd_error_handler)
-		(_("%B(%A+0x%lx): reloc against `%s': error %d"),
+	      _bfd_error_handler
+		/* xgettext:c-format */
+		(_("%B(%A+%#Lx): reloc against `%s': error %d"),
 		 input_bfd, input_section,
-		 (long) rel->r_offset, name, (int) r);
+		 rel->r_offset, name, (int) r);
 	      return FALSE;
 	    }
 	}
@@ -3365,7 +3267,7 @@ elf_s390_finish_ifunc_symbol (bfd *output_bfd,
 
   if (!h
       || h->dynindx == -1
-      || ((info->executable
+      || ((bfd_link_executable (info)
 	   || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
 	  && h->def_regular))
     {
@@ -3409,17 +3311,16 @@ elf_s390_finish_dynamic_symbol (bfd *output_bfd,
 
       /* This symbol has an entry in the procedure linkage table.  Set
 	 it up.  */
-      if (s390_is_ifunc_symbol_p (h))
+      if (s390_is_ifunc_symbol_p (h) && h->def_regular)
 	{
-	  /* If we can resolve the IFUNC symbol locally we generate an
-	     IRELATIVE reloc.  */
-	  elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
-					eh->ifunc_resolver_address +
-					eh->ifunc_resolver_section->output_offset +
-					eh->ifunc_resolver_section->output_section->vma);
-				 ;
-	  /* Fallthrough.  Handling of explicit GOT slots of IFUNC
-	     symbols is below.  */
+	  elf_s390_finish_ifunc_symbol (output_bfd, info, h,
+	    htab, h->plt.offset,
+	    eh->ifunc_resolver_address +
+	    eh->ifunc_resolver_section->output_offset +
+	    eh->ifunc_resolver_section->output_section->vma);
+
+	  /* Do not return yet.  Handling of explicit GOT slots of
+	     IFUNC symbols is below.  */
 	}
       else
 	{
@@ -3507,7 +3408,7 @@ elf_s390_finish_dynamic_symbol (bfd *output_bfd,
 
       if (h->def_regular && s390_is_ifunc_symbol_p (h))
 	{
-	  if (info->shared)
+	  if (bfd_link_pic (info))
 	    {
 	      /* An explicit GOT slot usage needs GLOB_DAT.  If the
 		 symbol references local the implicit got.iplt slot
@@ -3527,8 +3428,8 @@ elf_s390_finish_dynamic_symbol (bfd *output_bfd,
 	      return TRUE;
 	    }
 	}
-      else if (info->shared
-	  && SYMBOL_REFERENCES_LOCAL (info, h))
+      else if (bfd_link_pic (info)
+	       && SYMBOL_REFERENCES_LOCAL (info, h))
 	{
 	  /* If this is a static link, or it is a -Bsymbolic link and
 	     the symbol is defined locally or was forced to be local
@@ -3536,7 +3437,7 @@ elf_s390_finish_dynamic_symbol (bfd *output_bfd,
 	     RELATIVE reloc.  The entry in the global offset table
 	     will already have been initialized in the
 	     relocate_section function.  */
-	  if (!h->def_regular)
+	  if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
 	    return FALSE;
 	  BFD_ASSERT((h->got.offset & 1) != 0);
 	  rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
@@ -3547,7 +3448,7 @@ elf_s390_finish_dynamic_symbol (bfd *output_bfd,
       else
 	{
 	  BFD_ASSERT((h->got.offset & 1) == 0);
-do_glob_dat:
+	do_glob_dat:
 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
 	  rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
 	  rela.r_addend = 0;
@@ -3561,6 +3462,7 @@ do_glob_dat:
   if (h->needs_copy)
     {
       Elf_Internal_Rela rela;
+      asection *s;
       bfd_byte *loc;
 
       /* This symbols needs a copy reloc.  Set it up.  */
@@ -3568,7 +3470,7 @@ do_glob_dat:
       if (h->dynindx == -1
 	  || (h->root.type != bfd_link_hash_defined
 	      && h->root.type != bfd_link_hash_defweak)
-	  || htab->srelbss == NULL)
+	  || htab->elf.srelbss == NULL)
 	abort ();
 
       rela.r_offset = (h->root.u.def.value
@@ -3576,8 +3478,11 @@ do_glob_dat:
 		       + h->root.u.def.section->output_offset);
       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
       rela.r_addend = 0;
-      loc = htab->srelbss->contents;
-      loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
+      if (h->root.u.def.section == htab->elf.sdynrelro)
+	s = htab->elf.sreldynrelro;
+      else
+	s = htab->elf.srelbss;
+      loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
     }
 
@@ -3598,6 +3503,23 @@ elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
 			   const asection *rel_sec ATTRIBUTE_UNUSED,
 			   const Elf_Internal_Rela *rela)
 {
+  bfd *abfd = info->output_bfd;
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
+  unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
+  Elf_Internal_Sym sym;
+
+  if (htab->elf.dynsym == NULL
+      || !bed->s->swap_symbol_in (abfd,
+				  (htab->elf.dynsym->contents
+				   + r_symndx * bed->s->sizeof_sym),
+				  0, &sym))
+    abort ();
+
+  /* Check relocation against STT_GNU_IFUNC symbol.  */
+  if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
+    return reloc_class_ifunc;
+
   switch ((int) ELF64_R_TYPE (rela->r_info))
     {
     case R_390_RELATIVE:
@@ -3652,16 +3574,19 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
 	      continue;
 
 	    case DT_PLTGOT:
-	      dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
+	      s = htab->elf.sgotplt;
+	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
 	      break;
 
 	    case DT_JMPREL:
-	      dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
+	      s = htab->elf.srelplt;
+	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
 	      break;
 
 	    case DT_PLTRELSZ:
-	      s = htab->elf.srelplt->output_section;
-	      dyn.d_un.d_val = s->size;
+	      dyn.d_un.d_val = htab->elf.srelplt->size;
+	      if (htab->elf.irelplt)
+		dyn.d_un.d_val += htab->elf.irelplt->size;
 	      break;
 
 	    case DT_RELASZ:
@@ -3672,8 +3597,9 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
 		 linker script arranges for .rela.plt to follow all
 		 other relocation sections, we don't have to worry
 		 about changing the DT_RELA entry.  */
-	      s = htab->elf.srelplt->output_section;
-	      dyn.d_un.d_val -= s->size;
+	      dyn.d_un.d_val -= htab->elf.srelplt->size;
+	      if (htab->elf.irelplt)
+		dyn.d_un.d_val -= htab->elf.irelplt->size;
 	      break;
 	    }
 
@@ -3688,9 +3614,10 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
 		  PLT_FIRST_ENTRY_SIZE);
 	  /* Fixup relative address to start of GOT */
 	  bfd_put_32 (output_bfd,
-		      (htab->elf.sgotplt->output_section->vma +
-		       htab->elf.sgotplt->output_offset
-		       - htab->elf.splt->output_section->vma - 6)/2,
+		      (htab->elf.sgotplt->output_section->vma
+		       + htab->elf.sgotplt->output_offset
+		       - htab->elf.splt->output_section->vma
+		       - htab->elf.splt->output_offset - 6)/2,
 		      htab->elf.splt->contents + 8);
 	}
       if (elf_section_data (htab->elf.splt->output_section) != NULL)
@@ -3710,7 +3637,7 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
 	  /* One entry for shared object struct ptr.  */
 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
 	  /* One entry for _dl_runtime_resolve.  */
-	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
+	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
 	}
 
       elf_section_data (htab->elf.sgot->output_section)
@@ -3718,7 +3645,7 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
     }
 
   /* Finish dynamic symbol for local IFUNC symbols.  */
-  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
     {
       struct plt_entry *local_plt;
       Elf_Internal_Sym *isym;
@@ -3726,6 +3653,9 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
 
       symtab_hdr = &elf_symtab_hdr (ibfd);
 
+      if (!is_s390_elf (ibfd))
+	continue;
+
       local_plt = elf_s390_local_plt (ibfd);
       if (local_plt != NULL)
 	for (i = 0; i < symtab_hdr->sh_info; i++)
@@ -3750,7 +3680,120 @@ elf_s390_finish_dynamic_sections (bfd *output_bfd,
 
   return TRUE;
 }
+
+/* Support for core dump NOTE sections.  */
+
+static bfd_boolean
+elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
+{
+  int offset;
+  size_t size;
 
+  switch (note->descsz)
+    {
+    default:
+      return FALSE;
+
+    case 336:			/* sizeof(struct elf_prstatus) on s390x */
+      /* pr_cursig */
+      elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
+
+      /* pr_pid */
+      elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
+
+      /* pr_reg */
+      offset = 112;
+      size = 216;
+      break;
+    }
+
+  /* Make a ".reg/999" section.  */
+  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
+					  size, note->descpos + offset);
+}
+
+static bfd_boolean
+elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+  switch (note->descsz)
+    {
+    default:
+      return FALSE;
+
+    case 136:			/* sizeof(struct elf_prpsinfo) on s390x */
+      elf_tdata (abfd)->core->pid
+	= bfd_get_32 (abfd, note->descdata + 24);
+      elf_tdata (abfd)->core->program
+	= _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
+      elf_tdata (abfd)->core->command
+	= _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
+    }
+
+  /* Note that for some reason, a spurious space is tacked
+     onto the end of the args in some (at least one anyway)
+     implementations, so strip it off if it exists.  */
+
+  {
+    char *command = elf_tdata (abfd)->core->command;
+    int n = strlen (command);
+
+    if (0 < n && command[n - 1] == ' ')
+      command[n - 1] = '\0';
+  }
+
+  return TRUE;
+}
+
+static char *
+elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
+			  int note_type, ...)
+{
+  va_list ap;
+
+  switch (note_type)
+    {
+    default:
+      return NULL;
+
+    case NT_PRPSINFO:
+      {
+	char data[136] = { 0 };
+	const char *fname, *psargs;
+
+	va_start (ap, note_type);
+	fname = va_arg (ap, const char *);
+	psargs = va_arg (ap, const char *);
+	va_end (ap);
+
+	strncpy (data + 40, fname, 16);
+	strncpy (data + 56, psargs, 80);
+	return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+				   &data, sizeof (data));
+      }
+
+    case NT_PRSTATUS:
+      {
+	char data[336] = { 0 };
+	long pid;
+	int cursig;
+	const void *gregs;
+
+	va_start (ap, note_type);
+	pid = va_arg (ap, long);
+	cursig = va_arg (ap, int);
+	gregs = va_arg (ap, const void *);
+	va_end (ap);
+
+	bfd_put_16 (abfd, cursig, data + 12);
+	bfd_put_32 (abfd, pid, data + 32);
+	memcpy (data + 112, gregs, 216);
+	return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+				   &data, sizeof (data));
+      }
+    }
+  /* NOTREACHED */
+}
+
 /* Return address for Ith PLT stub in section PLT, for relocation REL
    or (bfd_vma) -1 if it should not be included.  */
 
@@ -3761,6 +3804,93 @@ elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
   return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
 }
 
+/* Merge backend specific data from an object file to the output
+   object file when linking.  */
+
+static bfd_boolean
+elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
+{
+  if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
+    return TRUE;
+
+  return elf_s390_merge_obj_attributes (ibfd, info);
+}
+
+/* We may add a PT_S390_PGSTE program header.  */
+
+static int
+elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
+				     struct bfd_link_info *info)
+{
+  struct elf_s390_link_hash_table *htab;
+
+  if (info)
+    {
+      htab = elf_s390_hash_table (info);
+      if (htab)
+	return htab->params->pgste;
+    }
+  return 0;
+}
+
+
+/* Add the PT_S390_PGSTE program header.  */
+
+static bfd_boolean
+elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
+{
+  struct elf_s390_link_hash_table *htab;
+  struct elf_segment_map *m, *pm = NULL;
+
+  if (!abfd || !info)
+    return TRUE;
+
+  htab = elf_s390_hash_table (info);
+  if (!htab || !htab->params->pgste)
+    return TRUE;
+
+  /* If there is already a PT_S390_PGSTE header, avoid adding
+     another.  */
+  m = elf_seg_map (abfd);
+  while (m && m->p_type != PT_S390_PGSTE)
+    {
+      pm = m;
+      m = m->next;
+    }
+
+  if (m)
+    return TRUE;
+
+  m = (struct elf_segment_map *)
+    bfd_zalloc (abfd, sizeof (struct elf_segment_map));
+  if (m == NULL)
+    return FALSE;
+  m->p_type = PT_S390_PGSTE;
+  m->count = 0;
+  m->next = NULL;
+  if (pm)
+    pm->next = m;
+
+  return TRUE;
+}
+
+bfd_boolean
+bfd_elf_s390_set_options (struct bfd_link_info *info,
+			  struct s390_elf_params *params)
+{
+  struct elf_s390_link_hash_table *htab;
+
+  if (info)
+    {
+      htab = elf_s390_hash_table (info);
+      if (htab)
+	htab->params = params;
+    }
+
+  return TRUE;
+}
+
+
 /* Why was the hash table entry size definition changed from
    ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
    this is the only reason for the s390_elf64_size_info structure.  */
@@ -3796,7 +3926,7 @@ const struct elf_size_info s390_elf64_size_info =
   bfd_elf64_swap_reloca_out
 };
 
-#define TARGET_BIG_SYM	bfd_elf64_s390_vec
+#define TARGET_BIG_SYM	s390_elf64_vec
 #define TARGET_BIG_NAME	"elf64-s390"
 #define ELF_ARCH	bfd_arch_s390
 #define ELF_TARGET_ID	S390_ELF_DATA
@@ -3812,6 +3942,7 @@ const struct elf_size_info s390_elf64_size_info =
 #define elf_backend_plt_readonly	1
 #define elf_backend_want_plt_sym	0
 #define elf_backend_got_header_size	24
+#define elf_backend_want_dynrelro	1
 #define elf_backend_rela_normal		1
 
 #define elf_info_to_howto		elf_s390_info_to_howto
@@ -3819,39 +3950,30 @@ const struct elf_size_info s390_elf64_size_info =
 #define bfd_elf64_bfd_is_local_label_name     elf_s390_is_local_label_name
 #define bfd_elf64_bfd_link_hash_table_create  elf_s390_link_hash_table_create
 #define bfd_elf64_bfd_reloc_type_lookup	      elf_s390_reloc_type_lookup
-#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
+#define bfd_elf64_bfd_reloc_name_lookup       elf_s390_reloc_name_lookup
+#define bfd_elf64_bfd_merge_private_bfd_data  elf64_s390_merge_private_bfd_data
 
 #define elf_backend_adjust_dynamic_symbol     elf_s390_adjust_dynamic_symbol
 #define elf_backend_check_relocs	      elf_s390_check_relocs
 #define elf_backend_copy_indirect_symbol      elf_s390_copy_indirect_symbol
-#define elf_backend_create_dynamic_sections   elf_s390_create_dynamic_sections
+#define elf_backend_create_dynamic_sections   _bfd_elf_create_dynamic_sections
 #define elf_backend_finish_dynamic_sections   elf_s390_finish_dynamic_sections
 #define elf_backend_finish_dynamic_symbol     elf_s390_finish_dynamic_symbol
 #define elf_backend_gc_mark_hook	      elf_s390_gc_mark_hook
-#define elf_backend_gc_sweep_hook	      elf_s390_gc_sweep_hook
 #define elf_backend_reloc_type_class	      elf_s390_reloc_type_class
 #define elf_backend_relocate_section	      elf_s390_relocate_section
 #define elf_backend_size_dynamic_sections     elf_s390_size_dynamic_sections
 #define elf_backend_init_index_section	      _bfd_elf_init_1_index_section
+#define elf_backend_grok_prstatus	      elf_s390_grok_prstatus
+#define elf_backend_grok_psinfo		      elf_s390_grok_psinfo
+#define elf_backend_write_core_note	      elf_s390_write_core_note
 #define elf_backend_plt_sym_val		      elf_s390_plt_sym_val
 #define elf_backend_add_symbol_hook           elf_s390_add_symbol_hook
+#define elf_backend_sort_relocs_p             elf_s390_elf_sort_relocs_p
+#define elf_backend_additional_program_headers elf_s390_additional_program_headers
+#define elf_backend_modify_segment_map	      elf_s390_modify_segment_map
 
 #define bfd_elf64_mkobject		elf_s390_mkobject
 #define elf_backend_object_p		elf_s390_object_p
 
-/* Enable ELF64 archive functions.  */
-#define bfd_elf64_archive_functions
-extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
-extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
-
-#define bfd_elf64_archive_slurp_extended_name_table 	_bfd_archive_coff_slurp_extended_name_table
-#define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
-#define bfd_elf64_archive_truncate_arname 		_bfd_archive_coff_truncate_arname
-#define bfd_elf64_archive_read_ar_hdr			_bfd_archive_coff_read_ar_hdr
-#define bfd_elf64_archive_write_ar_hdr			_bfd_archive_coff_write_ar_hdr
-#define bfd_elf64_archive_openr_next_archived_file 	_bfd_archive_coff_openr_next_archived_file
-#define bfd_elf64_archive_get_elt_at_index 		_bfd_archive_coff_get_elt_at_index
-#define bfd_elf64_archive_generic_stat_arch_elt 	_bfd_archive_coff_generic_stat_arch_elt
-#define bfd_elf64_archive_update_armap_timestamp 	_bfd_archive_coff_update_armap_timestamp
-
 #include "elf64-target.h"