Add s390 backend.
authorMarcin Kościelnicki <koriakin@0x04.net>
Mon, 5 Oct 2015 14:57:13 +0000 (16:57 +0200)
committerCary Coutant <ccoutant@gmail.com>
Wed, 28 Oct 2015 23:47:27 +0000 (16:47 -0700)
elfcpp/
* s390.h: New file.

gold/
* s390.cc: New file.
* Makefile.am (TARGETSOURCES): Add s390.cc.
(ALL_TARGETOBJS): Add s390.o.
* Makefile.in: Regenerate.
* configure.ac: Add s390 support.
* configure: Regenerate.
* configure.tgt: Add s390-*-* and s390x-*-*.
* testsuite/icf_safe_test.sh (arch_specific_safe_fold): Add s390
support.

elfcpp/ChangeLog
elfcpp/s390.h [new file with mode: 0644]
gold/ChangeLog
gold/Makefile.am
gold/Makefile.in
gold/configure
gold/configure.ac
gold/configure.tgt
gold/s390.cc [new file with mode: 0644]
gold/testsuite/icf_safe_test.sh

index 24df27b35ff4c99d843dce784e46e3e3c7c7a6ff..2d0e7c7541ef0e6a27ac701a568842ef893ed2d4 100644 (file)
@@ -1,3 +1,7 @@
+2015-10-28  Marcin Kościelnicki  <koriakin@0x04.net>
+
+       * s390.h: New file.
+
 2015-10-22  H.J. Lu  <hongjiu.lu@intel.com>
 
        * x86_64.h (R_X86_64_GOTPCRELX): New.
diff --git a/elfcpp/s390.h b/elfcpp/s390.h
new file mode 100644 (file)
index 0000000..a368acd
--- /dev/null
@@ -0,0 +1,118 @@
+// s390.h -- ELF definitions specific to EM_S390  -*- C++ -*-
+
+// Copyright (C) 2015 Free Software Foundation, Inc.
+// Written by Marcin Kościelnicki <koriakin@0x04.net>.
+
+// This file is part of elfcpp.
+   
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public License
+// as published by the Free Software Foundation; either version 2, or
+// (at your option) any later version.
+
+// In addition to the permissions in the GNU Library General Public
+// License, the Free Software Foundation gives you unlimited
+// permission to link the compiled version of this file into
+// combinations with other programs, and to distribute those
+// combinations without any restriction coming from the use of this
+// file.  (The Library Public License restrictions do apply in other
+// respects; for example, they cover modification of the file, and
+/// distribution when not linked into a combined executable.)
+
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+
+// You should have received a copy of the GNU Library General Public
+// License along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+// 02110-1301, USA.
+
+#ifndef ELFCPP_S390_H
+#define ELFCPP_S390_H
+
+namespace elfcpp
+{
+
+enum
+{
+  // Original 31-bit ABI.
+  R_390_NONE = 0,           // No reloc.
+  R_390_8 = 1,              // Direct 8 bit.
+  R_390_12 = 2,             // Direct 12 bit.
+  R_390_16 = 3,             // Direct 16 bit.
+  R_390_32 = 4,             // Direct 32 bit.
+  R_390_PC32 = 5,           // PC relative 32 bit.
+  R_390_GOT12 = 6,          // 12 bit GOT offset.
+  R_390_GOT32 = 7,          // 32 bit GOT offset.
+  R_390_PLT32 = 8,          // 32 bit PC relative PLT address.
+  R_390_COPY = 9,           // Copy symbol at runtime.
+  R_390_GLOB_DAT = 10,      // Create GOT entry.
+  R_390_JMP_SLOT = 11,      // Create PLT entry.
+  R_390_RELATIVE = 12,      // Adjust by program base.
+  R_390_GOTOFF32 = 13,      // 32 bit offset to GOT.
+  R_390_GOTPC = 14,         // 32 bit PC relative offset to GOT.
+  R_390_GOT16 = 15,         // 16 bit GOT offset.
+  R_390_PC16 = 16,          // PC relative 16 bit.
+  R_390_PC16DBL = 17,       // PC relative 16 bit shifted by 1.
+  R_390_PLT16DBL = 18,      // 16 bit PC rel. PLT shifted by 1.
+  // New 64-bit ABI.
+  R_390_PC32DBL = 19,       // PC relative 32 bit shifted by 1.
+  R_390_PLT32DBL = 20,      // 32 bit PC rel. PLT shifted by 1.
+  R_390_GOTPCDBL = 21,      // 32 bit PC rel. GOT shifted by 1.
+  R_390_64 = 22,            // Direct 64 bit.
+  R_390_PC64 = 23,          // PC relative 64 bit.
+  R_390_GOT64 = 24,         // 64 bit GOT offset.
+  R_390_PLT64 = 25,         // 64 bit PC relative PLT address.
+  R_390_GOTENT = 26,        // 32 bit PC rel. to GOT entry >> 1.
+  // Extensions.
+  R_390_GOTOFF16 = 27,      // 16 bit offset to GOT.
+  R_390_GOTOFF64 = 28,      // 64 bit offset to GOT.
+  R_390_GOTPLT12 = 29,      // 12 bit offset to jump slot.
+  R_390_GOTPLT16 = 30,      // 16 bit offset to jump slot.
+  R_390_GOTPLT32 = 31,      // 32 bit offset to jump slot.
+  R_390_GOTPLT64 = 32,      // 64 bit offset to jump slot.
+  R_390_GOTPLTENT = 33,     // 32 bit rel. offset to jump slot.
+  R_390_PLTOFF16 = 34,      // 16 bit offset from GOT to PLT.
+  R_390_PLTOFF32 = 35,      // 32 bit offset from GOT to PLT.
+  R_390_PLTOFF64 = 36,      // 16 bit offset from GOT to PLT.
+  // TLS extensions.
+  R_390_TLS_LOAD = 37,      // Tag for load insn in TLS code.
+  R_390_TLS_GDCALL = 38,    // Tag for function call in general dynamic TLS code.
+  R_390_TLS_LDCALL = 39,    // Tag for function call in local dynamic TLS code.
+  R_390_TLS_GD32 = 40,      // Direct 32 bit for general dynamic thread local data.
+  R_390_TLS_GD64 = 41,      // Direct 64 bit for general dynamic thread local data.
+  R_390_TLS_GOTIE12 = 42,   // 12 bit GOT offset for static TLS block offset.
+  R_390_TLS_GOTIE32 = 43,   // 32 bit GOT offset for static TLS block offset.
+  R_390_TLS_GOTIE64 = 44,   // 64 bit GOT offset for static TLS block offset.
+  R_390_TLS_LDM32 = 45,     // Direct 32 bit for local dynamic thread local data in LD code.
+  R_390_TLS_LDM64 = 46,     // Direct 64 bit for local dynamic thread local data in LD code.
+  R_390_TLS_IE32 = 47,      // 32 bit address of GOT entry for negated static TLS block offset.
+  R_390_TLS_IE64 = 48,      // 64 bit address of GOT entry for negated static TLS block offset.
+  R_390_TLS_IEENT = 49,     // 32 bit rel. offset to GOT entry for negated static TLS block offset.
+  R_390_TLS_LE32 = 50,      // 32 bit negated offset relative to static TLS block.
+  R_390_TLS_LE64 = 51,      // 64 bit negated offset relative to static TLS block.
+  R_390_TLS_LDO32 = 52,     // 32 bit offset relative to TLS block.
+  R_390_TLS_LDO64 = 53,     // 64 bit offset relative to TLS block.
+  R_390_TLS_DTPMOD = 54,    // ID of module containing symbol.
+  R_390_TLS_DTPOFF = 55,    // Offset in TLS block.
+  R_390_TLS_TPOFF = 56,     // Negate offset in static TLS block.
+  // Yet more misc extensions.
+  R_390_20 = 57,            // Direct 20 bit.
+  R_390_GOT20 = 58,         // 20 bit GOT offset.
+  R_390_GOTPLT20 = 59,      // 20 bit offset to jump slot.
+  R_390_TLS_GOTIE20 = 60,   // 20 bit GOT offset for static TLS block offset.
+  R_390_IRELATIVE = 61,     // IFUNC relocation.
+  R_390_PC12DBL = 62,       // PC relative 12 bit shifted by 1.
+  R_390_PLT12DBL = 63,      // 12 bit PC rel. PLT shifted by 1.
+  R_390_PC24DBL = 64,       // PC relative 24 bit shifted by 1.
+  R_390_PLT24DBL = 65,      // 24 bit PC rel. PLT shifted by 1.
+  // GNU vtable garbage collection extensions.
+  R_390_GNU_VTINHERIT = 250,
+  R_390_GNU_VTENTRY = 251,
+};
+
+} // End namespace elfcpp.
+
+#endif // !defined(ELFCPP_S390_H)
index 0957c53a94815cad37c0ef4bfc59a0f62b95f931..23d64ed32487301e2a909b77cba0f9b4457b239f 100644 (file)
@@ -1,3 +1,15 @@
+2015-10-28  Marcin Kościelnicki  <koriakin@0x04.net>
+
+       * s390.cc: New file.
+       * Makefile.am (TARGETSOURCES): Add s390.cc.
+       (ALL_TARGETOBJS): Add s390.o.
+       * Makefile.in: Regenerate.
+       * configure.ac: Add s390 support.
+       * configure: Regenerate.
+       * configure.tgt: Add s390-*-* and s390x-*-*.
+       * testsuite/icf_safe_test.sh (arch_specific_safe_fold): Add s390
+       support.
+
 2015-10-28  Marcin Kościelnicki  <koriakin@0x04.net>
 
        * archive.cc (Archive::sym64name): New const.
index 01b00a4184613ebf714e72739d5042ac742471d8..7bfba67ad51bdad8a4b66da17a062e3b71d04e0c 100644 (file)
@@ -173,12 +173,13 @@ diststuff: $(EXTRA_DIST)
 
 TARGETSOURCES = \
        i386.cc x86_64.cc sparc.cc powerpc.cc arm.cc arm-reloc-property.cc tilegx.cc \
-       mips.cc aarch64.cc aarch64-reloc-property.cc
+       mips.cc aarch64.cc aarch64-reloc-property.cc s390.cc
 
 ALL_TARGETOBJS = \
        i386.$(OBJEXT) x86_64.$(OBJEXT) sparc.$(OBJEXT) powerpc.$(OBJEXT) \
        arm.$(OBJEXT) arm-reloc-property.$(OBJEXT) tilegx.$(OBJEXT) \
-       mips.$(OBJEXT) aarch64.$(OBJEXT) aarch64-reloc-property.$(OBJEXT)
+       mips.$(OBJEXT) aarch64.$(OBJEXT) aarch64-reloc-property.$(OBJEXT) \
+       s390.$(OBJEXT)
 
 libgold_a_SOURCES = $(CCFILES) $(HFILES) $(YFILES) $(DEFFILES)
 libgold_a_LIBADD = $(LIBOBJS)
index 8a235246125208096480ac7b5198125cd61e9ce9..dbfde80066c64272c38741c50943a691fc2f44f5 100644 (file)
@@ -70,8 +70,8 @@ subdir = .
 DIST_COMMON = NEWS README ChangeLog $(srcdir)/Makefile.in \
        $(srcdir)/Makefile.am $(top_srcdir)/configure \
        $(am__configure_deps) $(srcdir)/config.in \
-       $(srcdir)/../mkinstalldirs $(top_srcdir)/po/Make-in mremap.c \
-       pread.c ffsll.c ftruncate.c yyscript.h yyscript.c \
+       $(srcdir)/../mkinstalldirs $(top_srcdir)/po/Make-in pread.c \
+       ffsll.c ftruncate.c mremap.c yyscript.h yyscript.c \
        $(srcdir)/../depcomp $(srcdir)/../ylwrap
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
@@ -543,12 +543,13 @@ DEFFILES = arm-reloc.def aarch64-reloc.def
 EXTRA_DIST = yyscript.c yyscript.h
 TARGETSOURCES = \
        i386.cc x86_64.cc sparc.cc powerpc.cc arm.cc arm-reloc-property.cc tilegx.cc \
-       mips.cc aarch64.cc aarch64-reloc-property.cc
+       mips.cc aarch64.cc aarch64-reloc-property.cc s390.cc
 
 ALL_TARGETOBJS = \
        i386.$(OBJEXT) x86_64.$(OBJEXT) sparc.$(OBJEXT) powerpc.$(OBJEXT) \
        arm.$(OBJEXT) arm-reloc-property.$(OBJEXT) tilegx.$(OBJEXT) \
-       mips.$(OBJEXT) aarch64.$(OBJEXT) aarch64-reloc-property.$(OBJEXT)
+       mips.$(OBJEXT) aarch64.$(OBJEXT) aarch64-reloc-property.$(OBJEXT) \
+       s390.$(OBJEXT)
 
 libgold_a_SOURCES = $(CCFILES) $(HFILES) $(YFILES) $(DEFFILES)
 libgold_a_LIBADD = $(LIBOBJS)
@@ -818,6 +819,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/reduced_debug_output.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/reloc.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/resolve.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/s390.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/script-sections.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/script.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sparc.Po@am__quote@
index eac9669a612035f3c7263f96ab7722cc54ba33aa..987a846057253a8ceed8210098056c8f68d3532c 100755 (executable)
@@ -692,6 +692,8 @@ DEFAULT_TARGET_X32_FALSE
 DEFAULT_TARGET_X32_TRUE
 DEFAULT_TARGET_X86_64_FALSE
 DEFAULT_TARGET_X86_64_TRUE
+DEFAULT_TARGET_S390_FALSE
+DEFAULT_TARGET_S390_TRUE
 DEFAULT_TARGET_SPARC_FALSE
 DEFAULT_TARGET_SPARC_TRUE
 DEFAULT_TARGET_POWERPC_FALSE
@@ -3477,6 +3479,14 @@ else
   DEFAULT_TARGET_SPARC_FALSE=
 fi
 
+        if test "$targ_obj" = "s390"; then
+  DEFAULT_TARGET_S390_TRUE=
+  DEFAULT_TARGET_S390_FALSE='#'
+else
+  DEFAULT_TARGET_S390_TRUE='#'
+  DEFAULT_TARGET_S390_FALSE=
+fi
+
        target_x86_64=no
        target_x32=no
        if test "$targ_obj" = "x86_64"; then
@@ -6328,6 +6338,7 @@ fi
     powerpc*) false;;
     x86_64) false;;
     sparc64) false;;
+    s390x) false;;
     *) true;;
   esac; then
   FN_PTRS_IN_SO_WITHOUT_PIC_TRUE=
@@ -7755,6 +7766,10 @@ if test -z "${DEFAULT_TARGET_SPARC_TRUE}" && test -z "${DEFAULT_TARGET_SPARC_FAL
   as_fn_error "conditional \"DEFAULT_TARGET_SPARC\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${DEFAULT_TARGET_S390_TRUE}" && test -z "${DEFAULT_TARGET_S390_FALSE}"; then
+  as_fn_error "conditional \"DEFAULT_TARGET_S390\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${DEFAULT_TARGET_X86_64_TRUE}" && test -z "${DEFAULT_TARGET_X86_64_FALSE}"; then
   as_fn_error "conditional \"DEFAULT_TARGET_X86_64\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
index 94cae313d0e890ad6879127365c76276ff794982..89f6c53b92270653baf517f7e979666c8d0faea1 100644 (file)
@@ -204,6 +204,7 @@ for targ in $target $canon_targets; do
        AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
        AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
        AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
+       AM_CONDITIONAL(DEFAULT_TARGET_S390, test "$targ_obj" = "s390")
        target_x86_64=no
        target_x32=no
        if test "$targ_obj" = "x86_64"; then
@@ -331,6 +332,7 @@ AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
     powerpc*) false;;
     x86_64) false;;
     sparc64) false;;
+    s390x) false;;
     *) true;;
   esac])
 
index a3cb34dafcbf3c63975e7e1e42a408b83d86e9fb..495c9cd0ed1073c33bc5288af138361aaa0f27ef 100644 (file)
@@ -167,6 +167,20 @@ mips*-*-*)
  targ_big_endian=true
  targ_extra_big_endian=false
  ;;
+s390-*-*)
+ targ_obj=s390
+ targ_machine=EM_S390
+ targ_size=32
+ targ_big_endian=true
+ targ_extra_big_endian=false
+ ;;
+s390x-*-*)
+ targ_obj=s390
+ targ_machine=EM_S390
+ targ_size=64
+ targ_big_endian=true
+ targ_extra_big_endian=false
+ ;;
 *)
   targ_obj=UNKNOWN
   ;;
diff --git a/gold/s390.cc b/gold/s390.cc
new file mode 100644 (file)
index 0000000..020fb15
--- /dev/null
@@ -0,0 +1,4327 @@
+// s390.cc -- s390 target support for gold.
+
+// Copyright (C) 2015 Free Software Foundation, Inc.
+// Written by Marcin Kościelnicki <koriakin@0x04.net>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+#include "gold.h"
+
+#include <cstring>
+
+#include "elfcpp.h"
+#include "dwarf.h"
+#include "parameters.h"
+#include "reloc.h"
+#include "s390.h"
+#include "object.h"
+#include "symtab.h"
+#include "layout.h"
+#include "output.h"
+#include "copy-relocs.h"
+#include "target.h"
+#include "target-reloc.h"
+#include "target-select.h"
+#include "tls.h"
+#include "gc.h"
+#include "icf.h"
+
+namespace
+{
+
+using namespace gold;
+
+// A class to handle the .got.plt section.
+
+template<int size>
+class Output_data_got_plt_s390 : public Output_section_data_build
+{
+ public:
+  Output_data_got_plt_s390(Layout* layout)
+    : Output_section_data_build(size/8),
+      layout_(layout)
+  { }
+
+  Output_data_got_plt_s390(Layout* layout, off_t data_size)
+    : Output_section_data_build(data_size, size/8),
+      layout_(layout)
+  { }
+
+ protected:
+  // Write out the PLT data.
+  void
+  do_write(Output_file*);
+
+  // Write to a map file.
+  void
+  do_print_to_mapfile(Mapfile* mapfile) const
+  { mapfile->print_output_data(this, "** GOT PLT"); }
+
+ private:
+  // A pointer to the Layout class, so that we can find the .dynamic
+  // section when we write out the GOT PLT section.
+  Layout* layout_;
+};
+
+// A class to handle the PLT data.
+
+template<int size>
+class Output_data_plt_s390 : public Output_section_data
+{
+ public:
+  typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, true>
+    Reloc_section;
+
+  Output_data_plt_s390(Layout* layout,
+                         Output_data_got<size, true>* got,
+                         Output_data_got_plt_s390<size>* got_plt,
+                         Output_data_space* got_irelative)
+    : Output_section_data(4), layout_(layout),
+      irelative_rel_(NULL), got_(got), got_plt_(got_plt),
+      got_irelative_(got_irelative), count_(0),
+      irelative_count_(0), free_list_()
+  { this->init(layout); }
+
+  Output_data_plt_s390(Layout* layout,
+                         Output_data_got<size, true>* got,
+                         Output_data_got_plt_s390<size>* got_plt,
+                         Output_data_space* got_irelative,
+                         unsigned int plt_count)
+    : Output_section_data((plt_count + 1) * plt_entry_size,
+                          4, false),
+      layout_(layout), irelative_rel_(NULL), got_(got),
+      got_plt_(got_plt), got_irelative_(got_irelative), count_(plt_count),
+      irelative_count_(0), free_list_()
+  {
+    this->init(layout);
+
+    // Initialize the free list and reserve the first entry.
+    this->free_list_.init((plt_count + 1) * plt_entry_size, false);
+    this->free_list_.remove(0, plt_entry_size);
+  }
+
+  // Initialize the PLT section.
+  void
+  init(Layout* layout);
+
+  // Add an entry to the PLT.
+  void
+  add_entry(Symbol_table*, Layout*, Symbol* gsym);
+
+  // Add an entry to the PLT for a local STT_GNU_IFUNC symbol.
+  unsigned int
+  add_local_ifunc_entry(Symbol_table*, Layout*,
+    Sized_relobj_file<size, true>*, unsigned int);
+
+  // Add the relocation for a PLT entry.
+  void
+  add_relocation(Symbol_table*, Layout*, Symbol*, unsigned int);
+
+  // Return the .rela.plt section data.
+  Reloc_section*
+  rela_plt()
+  { return this->rel_; }
+
+  // Return where the IRELATIVE relocations should go in the PLT
+  // relocations.
+  Reloc_section*
+  rela_irelative(Symbol_table*, Layout*);
+
+  // Return whether we created a section for IRELATIVE relocations.
+  bool
+  has_irelative_section() const
+  { return this->irelative_rel_ != NULL; }
+
+  // Return the number of PLT entries.
+  unsigned int
+  entry_count() const
+  { return this->count_ + this->irelative_count_; }
+
+  // Return the offset of the first non-reserved PLT entry.
+  unsigned int
+  first_plt_entry_offset()
+  { return plt_entry_size; }
+
+  // Return the size of a PLT entry.
+  unsigned int
+  get_plt_entry_size() const
+  { return plt_entry_size; }
+
+  // Reserve a slot in the PLT for an existing symbol in an incremental update.
+  void
+  reserve_slot(unsigned int plt_index)
+  {
+    this->free_list_.remove((plt_index + 1) * plt_entry_size,
+                            (plt_index + 2) * plt_entry_size);
+  }
+
+  // Return the PLT address to use for a global symbol.
+  uint64_t
+  address_for_global(const Symbol*);
+
+  // Return the PLT address to use for a local symbol.
+  uint64_t
+  address_for_local(const Relobj*, unsigned int symndx);
+
+  // Add .eh_frame information for the PLT.
+  void
+  add_eh_frame(Layout* layout)
+  {
+         (void)layout;
+    layout->add_eh_frame_for_plt(this,
+                                plt_eh_frame_cie,
+                                plt_eh_frame_cie_size,
+                                plt_eh_frame_fde,
+                                plt_eh_frame_fde_size);
+  }
+
+ protected:
+  // Fill in the first PLT entry.
+  void
+  fill_first_plt_entry(unsigned char* pov,
+                      typename elfcpp::Elf_types<size>::Elf_Addr got_address,
+                      typename elfcpp::Elf_types<size>::Elf_Addr plt_address);
+
+  // Fill in a normal PLT entry.  Returns the offset into the entry that
+  // should be the initial GOT slot value.
+  unsigned int
+  fill_plt_entry(unsigned char* pov,
+                typename elfcpp::Elf_types<size>::Elf_Addr got_address,
+                typename elfcpp::Elf_types<size>::Elf_Addr plt_address,
+                unsigned int got_offset,
+                unsigned int plt_offset,
+                unsigned int plt_rel_offset);
+
+  void
+  do_adjust_output_section(Output_section* os);
+
+  // Write to a map file.
+  void
+  do_print_to_mapfile(Mapfile* mapfile) const
+  { mapfile->print_output_data(this, _("** PLT")); }
+
+ private:
+  // Set the final size.
+  void
+  set_final_data_size();
+
+  // Write out the PLT data.
+  void
+  do_write(Output_file*);
+
+  // A pointer to the Layout class, so that we can find the .dynamic
+  // section when we write out the GOT PLT section.
+  Layout* layout_;
+  // The reloc section.
+  Reloc_section* rel_;
+  // The IRELATIVE relocs, if necessary.  These must follow the
+  // regular PLT relocations.
+  Reloc_section* irelative_rel_;
+  // The .got section.
+  Output_data_got<size, true>* got_;
+  // The .got.plt section.
+  Output_data_got_plt_s390<size>* got_plt_;
+  // The part of the .got.plt section used for IRELATIVE relocs.
+  Output_data_space* got_irelative_;
+  // The number of PLT entries.
+  unsigned int count_;
+  // Number of PLT entries with R_TILEGX_IRELATIVE relocs.  These
+  // follow the regular PLT entries.
+  unsigned int irelative_count_;
+  // List of available regions within the section, for incremental
+  // update links.
+  Free_list free_list_;
+
+  // The size of an entry in the PLT.
+  static const int plt_entry_size = 0x20;
+  // The first entry in the PLT.
+  static const unsigned char first_plt_entry_32_abs[plt_entry_size];
+  static const unsigned char first_plt_entry_32_pic[plt_entry_size];
+  static const unsigned char first_plt_entry_64[plt_entry_size];
+  // Other entries in the PLT for an executable.
+  static const unsigned char plt_entry_32_abs[plt_entry_size];
+  static const unsigned char plt_entry_32_pic12[plt_entry_size];
+  static const unsigned char plt_entry_32_pic16[plt_entry_size];
+  static const unsigned char plt_entry_32_pic[plt_entry_size];
+  static const unsigned char plt_entry_64[plt_entry_size];
+
+  // The .eh_frame unwind information for the PLT.
+  static const int plt_eh_frame_cie_size = 12;
+  static const unsigned char plt_eh_frame_cie[plt_eh_frame_cie_size];
+  static const int plt_eh_frame_fde_size = 12;
+  static const unsigned char plt_eh_frame_fde[plt_eh_frame_fde_size];
+};
+
+
+template<int size>
+class Target_s390 : public Sized_target<size, true>
+{
+ public:
+  typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, true> Reloc_section;
+
+  Target_s390()
+    : Sized_target<size, true>(&s390_info),
+      got_(NULL), plt_(NULL), got_plt_(NULL), got_irelative_(NULL),
+      global_offset_table_(NULL), rela_dyn_(NULL),
+      rela_irelative_(NULL), copy_relocs_(elfcpp::R_390_COPY),
+      got_mod_index_offset_(-1U), tls_base_symbol_defined_(false),
+      layout_(NULL)
+  { }
+
+  // Scan the relocations to look for symbol adjustments.
+  void
+  gc_process_relocs(Symbol_table* symtab,
+                   Layout* layout,
+                   Sized_relobj_file<size, true>* object,
+                   unsigned int data_shndx,
+                   unsigned int sh_type,
+                   const unsigned char* prelocs,
+                   size_t reloc_count,
+                   Output_section* output_section,
+                   bool needs_special_offset_handling,
+                   size_t local_symbol_count,
+                   const unsigned char* plocal_symbols);
+
+  // Scan the relocations to look for symbol adjustments.
+  void
+  scan_relocs(Symbol_table* symtab,
+             Layout* layout,
+             Sized_relobj_file<size, true>* object,
+             unsigned int data_shndx,
+             unsigned int sh_type,
+             const unsigned char* prelocs,
+             size_t reloc_count,
+             Output_section* output_section,
+             bool needs_special_offset_handling,
+             size_t local_symbol_count,
+             const unsigned char* plocal_symbols);
+
+  // Finalize the sections.
+  void
+  do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
+
+  // Return the value to use for a dynamic which requires special
+  // treatment.
+  uint64_t
+  do_dynsym_value(const Symbol*) const;
+
+  // Relocate a section.
+  void
+  relocate_section(const Relocate_info<size, true>*,
+                  unsigned int sh_type,
+                  const unsigned char* prelocs,
+                  size_t reloc_count,
+                  Output_section* output_section,
+                  bool needs_special_offset_handling,
+                  unsigned char* view,
+                  typename elfcpp::Elf_types<size>::Elf_Addr view_address,
+                  section_size_type view_size,
+                  const Reloc_symbol_changes*);
+
+  // Scan the relocs during a relocatable link.
+  void
+  scan_relocatable_relocs(Symbol_table* symtab,
+                         Layout* layout,
+                         Sized_relobj_file<size, true>* object,
+                         unsigned int data_shndx,
+                         unsigned int sh_type,
+                         const unsigned char* prelocs,
+                         size_t reloc_count,
+                         Output_section* output_section,
+                         bool needs_special_offset_handling,
+                         size_t local_symbol_count,
+                         const unsigned char* plocal_symbols,
+                         Relocatable_relocs*);
+
+  // Return a string used to fill a code section with nops.
+  std::string
+  do_code_fill(section_size_type length) const;
+
+  // Emit relocations for a section.
+  void
+  relocate_relocs(
+      const Relocate_info<size, true>*,
+      unsigned int sh_type,
+      const unsigned char* prelocs,
+      size_t reloc_count,
+      Output_section* output_section,
+      typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
+      const Relocatable_relocs*,
+      unsigned char* view,
+      typename elfcpp::Elf_types<size>::Elf_Addr view_address,
+      section_size_type view_size,
+      unsigned char* reloc_view,
+      section_size_type reloc_view_size);
+
+  // Return whether SYM is defined by the ABI.
+  bool
+  do_is_defined_by_abi(const Symbol* sym) const
+  { return strcmp(sym->name(), "__tls_get_offset") == 0; }
+
+  // Return the PLT address to use for a global symbol.
+  uint64_t
+  do_plt_address_for_global(const Symbol* gsym) const
+  { return this->plt_section()->address_for_global(gsym); }
+
+  uint64_t
+  do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const
+  { return this->plt_section()->address_for_local(relobj, symndx); }
+
+  // Return the offset to use for the GOT_INDX'th got entry which is
+  // for a local tls symbol specified by OBJECT, SYMNDX.
+  int64_t
+  do_tls_offset_for_local(const Relobj* object,
+                         unsigned int symndx,
+                         unsigned int got_indx) const;
+
+  // Return the offset to use for the GOT_INDX'th got entry which is
+  // for global tls symbol GSYM.
+  int64_t
+  do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const;
+
+  // This function should be defined in targets that can use relocation
+  // types to determine (implemented in local_reloc_may_be_function_pointer
+  // and global_reloc_may_be_function_pointer)
+  // if a function's pointer is taken.  ICF uses this in safe mode to only
+  // fold those functions whose pointer is defintely not taken.
+  bool
+  do_can_check_for_function_pointers() const
+  { return true; }
+
+  // Return the size of the GOT section.
+  section_size_type
+  got_size() const
+  {
+    gold_assert(this->got_ != NULL);
+    return this->got_->data_size();
+  }
+
+  // Return the number of entries in the GOT.
+  unsigned int
+  got_entry_count() const
+  {
+    if (this->got_ == NULL)
+      return 0;
+    return this->got_size() / (size / 8);
+  }
+
+  // Return the number of entries in the PLT.
+  unsigned int
+  plt_entry_count() const;
+
+  // Return the offset of the first non-reserved PLT entry.
+  unsigned int
+  first_plt_entry_offset() const;
+
+  // Return the size of each PLT entry.
+  unsigned int
+  plt_entry_size() const;
+
+  // Create the GOT section for an incremental update.
+  Output_data_got_base*
+  init_got_plt_for_update(Symbol_table* symtab,
+                         Layout* layout,
+                         unsigned int got_count,
+                         unsigned int plt_count);
+
+  // Reserve a GOT entry for a local symbol, and regenerate any
+  // necessary dynamic relocations.
+  void
+  reserve_local_got_entry(unsigned int got_index,
+                         Sized_relobj<size, true>* obj,
+                         unsigned int r_sym,
+                         unsigned int got_type);
+
+  // Reserve a GOT entry for a global symbol, and regenerate any
+  // necessary dynamic relocations.
+  void
+  reserve_global_got_entry(unsigned int got_index, Symbol* gsym,
+                          unsigned int got_type);
+
+  // Register an existing PLT entry for a global symbol.
+  void
+  register_global_plt_entry(Symbol_table*, Layout*, unsigned int plt_index,
+                           Symbol* gsym);
+
+  // Force a COPY relocation for a given symbol.
+  void
+  emit_copy_reloc(Symbol_table*, Symbol*, Output_section*, off_t);
+
+  // Apply an incremental relocation.
+  void
+  apply_relocation(const Relocate_info<size, true>* relinfo,
+                  typename elfcpp::Elf_types<size>::Elf_Addr r_offset,
+                  unsigned int r_type,
+                  typename elfcpp::Elf_types<size>::Elf_Swxword r_addend,
+                  const Symbol* gsym,
+                  unsigned char* view,
+                  typename elfcpp::Elf_types<size>::Elf_Addr address,
+                  section_size_type view_size);
+
+ private:
+
+  // The class which scans relocations.
+  class Scan
+  {
+  public:
+    Scan()
+      : issued_non_pic_error_(false)
+    { }
+
+    static inline int
+    get_reference_flags(unsigned int r_type);
+
+    inline void
+    local(Symbol_table* symtab, Layout* layout, Target_s390* target,
+         Sized_relobj_file<size, true>* object,
+         unsigned int data_shndx,
+         Output_section* output_section,
+         const elfcpp::Rela<size, true>& reloc, unsigned int r_type,
+         const elfcpp::Sym<size, true>& lsym,
+         bool is_discarded);
+
+    inline void
+    global(Symbol_table* symtab, Layout* layout, Target_s390* target,
+          Sized_relobj_file<size, true>* object,
+          unsigned int data_shndx,
+          Output_section* output_section,
+          const elfcpp::Rela<size, true>& reloc, unsigned int r_type,
+          Symbol* gsym);
+
+    inline bool
+    local_reloc_may_be_function_pointer(Symbol_table* symtab, Layout* layout,
+                                       Target_s390* target,
+                                       Sized_relobj_file<size, true>* object,
+                                       unsigned int data_shndx,
+                                       Output_section* output_section,
+                                       const elfcpp::Rela<size, true>& reloc,
+                                       unsigned int r_type,
+                                       const elfcpp::Sym<size, true>& lsym);
+
+    inline bool
+    global_reloc_may_be_function_pointer(Symbol_table* symtab, Layout* layout,
+                                        Target_s390* target,
+                                        Sized_relobj_file<size, true>* object,
+                                        unsigned int data_shndx,
+                                        Output_section* output_section,
+                                        const elfcpp::Rela<size, true>& reloc,
+                                        unsigned int r_type,
+                                        Symbol* gsym);
+
+  private:
+    static void
+    unsupported_reloc_local(Sized_relobj_file<size, true>*,
+                           unsigned int r_type);
+
+    static void
+    unsupported_reloc_global(Sized_relobj_file<size, true>*,
+                            unsigned int r_type, Symbol*);
+
+    void
+    check_non_pic(Relobj*, unsigned int r_type);
+
+    inline bool
+    possible_function_pointer_reloc(unsigned int r_type);
+
+    bool
+    reloc_needs_plt_for_ifunc(Sized_relobj_file<size, true>*,
+                             unsigned int r_type);
+
+    // Whether we have issued an error about a non-PIC compilation.
+    bool issued_non_pic_error_;
+  };
+
+  // The class which implements relocation.
+  class Relocate
+  {
+   public:
+    // Do a relocation.  Return false if the caller should not issue
+    // any warnings about this relocation.
+    inline bool
+    relocate(const Relocate_info<size, true>*, Target_s390*,
+            Output_section*,
+            size_t relnum, const elfcpp::Rela<size, true>&,
+            unsigned int r_type, const Sized_symbol<size>*,
+            const Symbol_value<size>*,
+            unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr,
+            section_size_type);
+
+   private:
+    // Do a TLS relocation.
+    inline typename elfcpp::Elf_types<size>::Elf_Addr
+    relocate_tls(const Relocate_info<size, true>*, Target_s390*,
+                size_t relnum, const elfcpp::Rela<size, true>&,
+                unsigned int r_type, const Sized_symbol<size>*,
+                const Symbol_value<size>*,
+                unsigned char*, section_size_type);
+
+    // Do a TLS General-Dynamic to Initial-Exec transition.
+    inline void
+    tls_gd_to_ie(const Relocate_info<size, true>*, size_t relnum,
+                const elfcpp::Rela<size, true>&,
+                unsigned char* view,
+                section_size_type view_size);
+
+    // Do a TLS General-Dynamic to Local-Exec transition.
+    inline void
+    tls_gd_to_le(const Relocate_info<size, true>*, size_t relnum,
+                const elfcpp::Rela<size, true>&,
+                unsigned char* view,
+                section_size_type view_size);
+
+    // Do a TLS Local-Dynamic to Local-Exec transition.
+    inline void
+    tls_ld_to_le(const Relocate_info<size, true>*, size_t relnum,
+                const elfcpp::Rela<size, true>&,
+                unsigned char* view,
+                section_size_type view_size);
+
+    // Do a TLS Initial-Exec to Local-Exec transition.
+    static inline void
+    tls_ie_to_le(const Relocate_info<size, true>*, size_t relnum,
+                const elfcpp::Rela<size, true>&,
+                unsigned char* view,
+                section_size_type view_size);
+  };
+
+  // A class which returns the size required for a relocation type,
+  // used while scanning relocs during a relocatable link.
+  class Relocatable_size_for_reloc
+  {
+   public:
+    unsigned int
+    get_size_for_reloc(unsigned int, Relobj*);
+  };
+
+  // Adjust TLS relocation type based on the options and whether this
+  // is a local symbol.
+  static tls::Tls_optimization
+  optimize_tls_reloc(bool is_final, int r_type);
+
+  // Get the GOT section.
+  const Output_data_got<size, true>*
+  got_section() const
+  {
+    gold_assert(this->got_ != NULL);
+    return this->got_;
+  }
+
+  // Get the GOT section, creating it if necessary.
+  Output_data_got<size, true>*
+  got_section(Symbol_table*, Layout*);
+
+  typename elfcpp::Elf_types<size>::Elf_Addr
+  got_address() const
+  {
+    gold_assert(this->got_ != NULL);
+    return this->got_plt_->address();
+  }
+
+  typename elfcpp::Elf_types<size>::Elf_Addr
+  got_main_offset() const
+  {
+    gold_assert(this->got_ != NULL);
+    return this->got_->address() - this->got_address();
+  }
+
+  // Create the PLT section.
+  void
+  make_plt_section(Symbol_table* symtab, Layout* layout);
+
+  // Create a PLT entry for a global symbol.
+  void
+  make_plt_entry(Symbol_table*, Layout*, Symbol*);
+
+  // Create a PLT entry for a local STT_GNU_IFUNC symbol.
+  void
+  make_local_ifunc_plt_entry(Symbol_table*, Layout*,
+                            Sized_relobj_file<size, true>* relobj,
+                            unsigned int local_sym_index);
+
+  // Create a GOT entry for the TLS module index.
+  unsigned int
+  got_mod_index_entry(Symbol_table* symtab, Layout* layout,
+                     Sized_relobj_file<size, true>* object);
+
+  // Get the PLT section.
+  Output_data_plt_s390<size>*
+  plt_section() const
+  {
+    gold_assert(this->plt_ != NULL);
+    return this->plt_;
+  }
+
+  // Get the dynamic reloc section, creating it if necessary.
+  Reloc_section*
+  rela_dyn_section(Layout*);
+
+  // Get the section to use for IRELATIVE relocations.
+  Reloc_section*
+  rela_irelative_section(Layout*);
+
+  // Add a potential copy relocation.
+  void
+  copy_reloc(Symbol_table* symtab, Layout* layout,
+            Sized_relobj_file<size, true>* object,
+            unsigned int shndx, Output_section* output_section,
+            Symbol* sym, const elfcpp::Rela<size, true>& reloc)
+  {
+    this->copy_relocs_.copy_reloc(symtab, layout,
+                                 symtab->get_sized_symbol<size>(sym),
+                                 object, shndx, output_section,
+                                 reloc, this->rela_dyn_section(layout));
+  }
+
+  // Information about this specific target which we pass to the
+  // general Target structure.
+  static Target::Target_info s390_info;
+
+  // The types of GOT entries needed for this platform.
+  // These values are exposed to the ABI in an incremental link.
+  // Do not renumber existing values without changing the version
+  // number of the .gnu_incremental_inputs section.
+  enum Got_type
+  {
+    GOT_TYPE_STANDARD = 0,      // GOT entry for a regular symbol
+    GOT_TYPE_TLS_OFFSET = 1,    // GOT entry for TLS offset
+    GOT_TYPE_TLS_PAIR = 2,      // GOT entry for TLS module/offset pair
+  };
+
+  // The GOT section.
+  Output_data_got<size, true>* got_;
+  // The PLT section.
+  Output_data_plt_s390<size>* plt_;
+  // The GOT PLT section.
+  Output_data_got_plt_s390<size>* got_plt_;
+  // The GOT section for IRELATIVE relocations.
+  Output_data_space* got_irelative_;
+  // The _GLOBAL_OFFSET_TABLE_ symbol.
+  Symbol* global_offset_table_;
+  // The dynamic reloc section.
+  Reloc_section* rela_dyn_;
+  // The section to use for IRELATIVE relocs.
+  Reloc_section* rela_irelative_;
+  // Relocs saved to avoid a COPY reloc.
+  Copy_relocs<elfcpp::SHT_RELA, size, true> copy_relocs_;
+  // Offset of the GOT entry for the TLS module index.
+  unsigned int got_mod_index_offset_;
+  // True if the _TLS_MODULE_BASE_ symbol has been defined.
+  bool tls_base_symbol_defined_;
+  // For use in do_tls_offset_for_*
+  Layout *layout_;
+};
+
+template<>
+Target::Target_info Target_s390<32>::s390_info =
+{
+  32,                  // size
+  true,                        // is_big_endian
+  elfcpp::EM_S390,     // machine_code
+  false,               // has_make_symbol
+  false,               // has_resolve
+  true,                        // has_code_fill
+  true,                        // is_default_stack_executable
+  true,                        // can_icf_inline_merge_sections
+  '\0',                        // wrap_char
+  "/lib/ld.so.1",      // dynamic_linker
+  0x00400000,          // default_text_segment_address
+  4 * 1024,            // abi_pagesize (overridable by -z max-page-size)
+  4 * 1024,            // common_pagesize (overridable by -z common-page-size)
+  false,                // isolate_execinstr
+  0,                    // rosegment_gap
+  elfcpp::SHN_UNDEF,   // small_common_shndx
+  elfcpp::SHN_UNDEF,   // large_common_shndx
+  0,                   // small_common_section_flags
+  0,                   // large_common_section_flags
+  NULL,                        // attributes_section
+  NULL,                        // attributes_vendor
+  "_start",            // entry_symbol_name
+  32,                  // hash_entry_size
+};
+
+template<>
+Target::Target_info Target_s390<64>::s390_info =
+{
+  64,                  // size
+  true,                        // is_big_endian
+  elfcpp::EM_S390,     // machine_code
+  false,               // has_make_symbol
+  false,               // has_resolve
+  true,                        // has_code_fill
+  true,                        // is_default_stack_executable
+  true,                        // can_icf_inline_merge_sections
+  '\0',                        // wrap_char
+  "/lib/ld64.so.1",    // dynamic_linker
+  0x80000000ll,                // default_text_segment_address
+  4 * 1024,            // abi_pagesize (overridable by -z max-page-size)
+  4 * 1024,            // common_pagesize (overridable by -z common-page-size)
+  false,                // isolate_execinstr
+  0,                    // rosegment_gap
+  elfcpp::SHN_UNDEF,   // small_common_shndx
+  elfcpp::SHN_UNDEF,   // large_common_shndx
+  0,                   // small_common_section_flags
+  0,                   // large_common_section_flags
+  NULL,                        // attributes_section
+  NULL,                        // attributes_vendor
+  "_start",            // entry_symbol_name
+  64,                  // hash_entry_size
+};
+
+template<int size>
+class S390_relocate_functions
+{
+public:
+  enum Overflow_check
+  {
+    CHECK_NONE,
+    CHECK_SIGNED,
+    CHECK_UNSIGNED,
+    CHECK_BITFIELD,
+    CHECK_LOW_INSN,
+    CHECK_HIGH_INSN
+  };
+
+  enum Status
+  {
+    STATUS_OK,
+    STATUS_OVERFLOW
+  };
+
+private:
+  typedef S390_relocate_functions<size> This;
+  typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
+
+  template<int valsize>
+  static inline bool
+  has_overflow_signed(Address value)
+  {
+    // limit = 1 << (valsize - 1) without shift count exceeding size of type
+    Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1);
+    limit <<= ((valsize - 1) >> 1);
+    limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1));
+    return value + limit > (limit << 1) - 1;
+  }
+
+  template<int valsize>
+  static inline bool
+  has_overflow_unsigned(Address value)
+  {
+    Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1);
+    limit <<= ((valsize - 1) >> 1);
+    limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1));
+    return value > (limit << 1) - 1;
+  }
+
+  template<int fieldsize>
+  static inline void
+  rela(unsigned char* view, Address mask, Address value)
+  {
+    typedef typename elfcpp::Swap<fieldsize, true>::Valtype Valtype;
+    Valtype* wv = reinterpret_cast<Valtype*>(view);
+    Valtype val = elfcpp::Swap<fieldsize, true>::readval(view);
+    val &= ~mask;
+    value &= mask;
+    elfcpp::Swap<fieldsize, true>::writeval(wv, val | value);
+  }
+
+public:
+  // R_390_12, R_390_GOT12, R_390_GOTPLT12, R_390_GOTIE12
+  static inline Status
+  rela12(unsigned char* view, Address value)
+  {
+    if (This::template has_overflow_unsigned<12>(value))
+      return STATUS_OVERFLOW;
+    This::template rela<16>(view, 0x0fff, value);
+    return STATUS_OK;
+  }
+
+  // R_390_16, R_390_GOT16, R_390_GOTPLT16, R_390_GOTOFF16, R_390_PLTOFF16
+  static inline Status
+  rela16(unsigned char* view, Address value)
+  {
+    if (This::template has_overflow_signed<16>(value))
+      return STATUS_OVERFLOW;
+    This::template rela<16>(view, 0xffff, value);
+    return STATUS_OK;
+  }
+
+  // R_390_20, R_390_GOT20, R_390_GOTPLT20, R_390_GOTIE20
+  static inline Status
+  rela20(unsigned char* view, Address value)
+  {
+    if (This::template has_overflow_signed<20>(value))
+      return STATUS_OVERFLOW;
+    This::template rela<16>(view, 0x0fff, value);
+    This::template rela<16>(view + 2, 0xff00, value >> (12 - 8));
+    return STATUS_OK;
+  }
+
+  // R_390_PC12DBL, R_390_PLT12DBL
+  static inline Status
+  pcrela12dbl(unsigned char* view, Address value, Address address)
+  {
+    value -= address;
+    if ((value & 1) != 0)
+      return STATUS_OVERFLOW;
+    if (This::template has_overflow_signed<13>(value))
+      return STATUS_OVERFLOW;
+    value >>= 1;
+    This::template rela<16>(view, 0x0fff, value);
+    return STATUS_OK;
+  }
+
+  // R_390_PC16DBL, R_390_PLT16DBL
+  static inline Status
+  pcrela16dbl(unsigned char* view, Address value, Address address)
+  {
+    value -= address;
+    if ((value & 1) != 0)
+      return STATUS_OVERFLOW;
+    if (This::template has_overflow_signed<17>(value))
+      return STATUS_OVERFLOW;
+    value >>= 1;
+    This::template rela<16>(view, 0xffff, value);
+    return STATUS_OK;
+  }
+
+  // R_390_PC24DBL, R_390_PLT24DBL
+  static inline Status
+  pcrela24dbl(unsigned char* view, Address value, Address address)
+  {
+    value -= address;
+    if ((value & 1) != 0)
+      return STATUS_OVERFLOW;
+    if (This::template has_overflow_signed<25>(value))
+      return STATUS_OVERFLOW;
+    value >>= 1;
+    // Swap doesn't take 24-bit fields well...
+    This::template rela<8>(view, 0xff, value >> 16);
+    This::template rela<16>(view + 1, 0xffff, value);
+    return STATUS_OK;
+  }
+
+  // R_390_PC32DBL, R_390_PLT32DBL, R_390_GOTPCDBL, R_390_GOTENT, R_390_GOTPLTENT
+  static inline Status
+  pcrela32dbl(unsigned char* view, Address value, Address address)
+  {
+    Address reloc = value - address;
+    if ((reloc & 1) != 0)
+      {
+       gold_warning(_("R_390_PC32DBL target misaligned at %llx"), (long long)address);
+       // Wait for a fix for https://sourceware.org/bugzilla/show_bug.cgi?id=18960
+       // return STATUS_OVERFLOW;
+      }
+    if (This::template has_overflow_signed<33>(reloc))
+      return STATUS_OVERFLOW;
+    reloc >>= 1;
+    if (value < address && size == 32)
+      reloc |= 0x80000000;
+    This::template rela<32>(view, 0xffffffff, reloc);
+    return STATUS_OK;
+  }
+
+};
+
+// Initialize the PLT section.
+
+template<int size>
+void
+Output_data_plt_s390<size>::init(Layout* layout)
+{
+  this->rel_ = new Reloc_section(false);
+  layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
+                                 elfcpp::SHF_ALLOC, this->rel_,
+                                 ORDER_DYNAMIC_PLT_RELOCS, false);
+}
+
+template<int size>
+void
+Output_data_plt_s390<size>::do_adjust_output_section(Output_section* os)
+{
+  os->set_entsize(plt_entry_size);
+}
+
+// Add an entry to the PLT.
+
+template<int size>
+void
+Output_data_plt_s390<size>::add_entry(Symbol_table* symtab, Layout* layout,
+                                       Symbol* gsym)
+{
+  gold_assert(!gsym->has_plt_offset());
+
+  unsigned int plt_index;
+  off_t plt_offset;
+  section_offset_type got_offset;
+
+  unsigned int* pcount;
+  unsigned int offset;
+  unsigned int reserved;
+  Output_section_data_build* got;
+  if (gsym->type() == elfcpp::STT_GNU_IFUNC
+      && gsym->can_use_relative_reloc(false))
+    {
+      pcount = &this->irelative_count_;
+      offset = 0;
+      reserved = 0;
+      got = this->got_irelative_;
+    }
+  else
+    {
+      pcount = &this->count_;
+      offset = 1;
+      reserved = 3;
+      got = this->got_plt_;
+    }
+
+  if (!this->is_data_size_valid())
+    {
+      // Note that when setting the PLT offset for a non-IRELATIVE
+      // entry we skip the initial reserved PLT entry.
+      plt_index = *pcount + offset;
+      plt_offset = plt_index * plt_entry_size;
+
+      ++*pcount;
+
+      got_offset = (plt_index - offset + reserved) * size / 8;
+      gold_assert(got_offset == got->current_data_size());
+
+      // Every PLT entry needs a GOT entry which points back to the PLT
+      // entry (this will be changed by the dynamic linker, normally
+      // lazily when the function is called).
+      got->set_current_data_size(got_offset + size / 8);
+    }
+  else
+    {
+      // FIXME: This is probably not correct for IRELATIVE relocs.
+
+      // For incremental updates, find an available slot.
+      plt_offset = this->free_list_.allocate(plt_entry_size,
+                                            plt_entry_size, 0);
+      if (plt_offset == -1)
+       gold_fallback(_("out of patch space (PLT);"
+                       " relink with --incremental-full"));
+
+      // The GOT and PLT entries have a 1-1 correspondance, so the GOT offset
+      // can be calculated from the PLT index, adjusting for the three
+      // reserved entries at the beginning of the GOT.
+      plt_index = plt_offset / plt_entry_size - 1;
+      got_offset = (plt_index - offset + reserved) * size / 8;
+    }
+
+  gsym->set_plt_offset(plt_offset);
+
+  // Every PLT entry needs a reloc.
+  this->add_relocation(symtab, layout, gsym, got_offset);
+
+  // Note that we don't need to save the symbol.  The contents of the
+  // PLT are independent of which symbols are used.  The symbols only
+  // appear in the relocations.
+}
+
+// Add an entry to the PLT for a local STT_GNU_IFUNC symbol.  Return
+// the PLT offset.
+
+template<int size>
+unsigned int
+Output_data_plt_s390<size>::add_local_ifunc_entry(
+    Symbol_table* symtab,
+    Layout* layout,
+    Sized_relobj_file<size, true>* relobj,
+    unsigned int local_sym_index)
+{
+  unsigned int plt_offset = this->irelative_count_ * plt_entry_size;
+  ++this->irelative_count_;
+
+  section_offset_type got_offset = this->got_irelative_->current_data_size();
+
+  // Every PLT entry needs a GOT entry which points back to the PLT
+  // entry.
+  this->got_irelative_->set_current_data_size(got_offset + size / 8);
+
+  // Every PLT entry needs a reloc.
+  Reloc_section* rela = this->rela_irelative(symtab, layout);
+  rela->add_symbolless_local_addend(relobj, local_sym_index,
+                                   elfcpp::R_390_IRELATIVE,
+                                   this->got_irelative_, got_offset, 0);
+
+  return plt_offset;
+}
+
+// Add the relocation for a PLT entry.
+
+template<int size>
+void
+Output_data_plt_s390<size>::add_relocation(Symbol_table* symtab,
+                                            Layout* layout,
+                                            Symbol* gsym,
+                                            unsigned int got_offset)
+{
+  if (gsym->type() == elfcpp::STT_GNU_IFUNC
+      && gsym->can_use_relative_reloc(false))
+    {
+      Reloc_section* rela = this->rela_irelative(symtab, layout);
+      rela->add_symbolless_global_addend(gsym, elfcpp::R_390_IRELATIVE,
+                                        this->got_irelative_, got_offset, 0);
+    }
+  else
+    {
+      gsym->set_needs_dynsym_entry();
+      this->rel_->add_global(gsym, elfcpp::R_390_JMP_SLOT, this->got_plt_,
+                            got_offset, 0);
+    }
+}
+
+// Return where the IRELATIVE relocations should go in the PLT.  These
+// follow the JUMP_SLOT and the TLSDESC relocations.
+
+template<int size>
+typename Output_data_plt_s390<size>::Reloc_section*
+Output_data_plt_s390<size>::rela_irelative(Symbol_table* symtab,
+                                            Layout* layout)
+{
+  if (this->irelative_rel_ == NULL)
+    {
+      this->irelative_rel_ = new Reloc_section(false);
+      layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
+                                     elfcpp::SHF_ALLOC, this->irelative_rel_,
+                                     ORDER_DYNAMIC_PLT_RELOCS, false);
+      gold_assert(this->irelative_rel_->output_section()
+                 == this->rel_->output_section());
+
+      if (parameters->doing_static_link())
+       {
+         // A statically linked executable will only have a .rela.plt
+         // section to hold R_390_IRELATIVE relocs for
+         // STT_GNU_IFUNC symbols.  The library will use these
+         // symbols to locate the IRELATIVE relocs at program startup
+         // time.
+         symtab->define_in_output_data("__rela_iplt_start", NULL,
+                                       Symbol_table::PREDEFINED,
+                                       this->irelative_rel_, 0, 0,
+                                       elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
+                                       elfcpp::STV_HIDDEN, 0, false, true);
+         symtab->define_in_output_data("__rela_iplt_end", NULL,
+                                       Symbol_table::PREDEFINED,
+                                       this->irelative_rel_, 0, 0,
+                                       elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
+                                       elfcpp::STV_HIDDEN, 0, true, true);
+       }
+    }
+  return this->irelative_rel_;
+}
+
+// Return the PLT address to use for a global symbol.
+
+template<int size>
+uint64_t
+Output_data_plt_s390<size>::address_for_global(const Symbol* gsym)
+{
+  uint64_t offset = 0;
+  if (gsym->type() == elfcpp::STT_GNU_IFUNC
+      && gsym->can_use_relative_reloc(false))
+    offset = (this->count_ + 1) * plt_entry_size;
+  return this->address() + offset + gsym->plt_offset();
+}
+
+// Return the PLT address to use for a local symbol.  These are always
+// IRELATIVE relocs.
+
+template<int size>
+uint64_t
+Output_data_plt_s390<size>::address_for_local(const Relobj* object,
+                                               unsigned int r_sym)
+{
+  return (this->address()
+         + (this->count_ + 1) * plt_entry_size
+         + object->local_plt_offset(r_sym));
+}
+
+// Set the final size.
+template<int size>
+void
+Output_data_plt_s390<size>::set_final_data_size()
+{
+  unsigned int count = this->count_ + this->irelative_count_;
+  this->set_data_size((count + 1) * plt_entry_size);
+}
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::first_plt_entry_32_abs[plt_entry_size] =
+{
+  0x50, 0x10, 0xf0, 0x1c, // st %r1, 28(%r15)
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x12, // l %r1, 18(%r1)
+  0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, // mvc 24(4,%r15), 4(%r1)
+  0x58, 0x10, 0x10, 0x08, // l %r1, 8(%r1)
+  0x07, 0xf1, // br %r1
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // _GLOBAL_OFFSET_TABLE_ (to fill)
+  0x00, 0x00, 0x00, 0x00, // padding
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::first_plt_entry_32_pic[plt_entry_size] =
+{
+  0x50, 0x10, 0xf0, 0x1c, // st %r1, 28(%r15)
+  0x58, 0x10, 0xc0, 0x04, // l %r1, 4(%r12)
+  0x50, 0x10, 0xf0, 0x18, // st %r1, 24(%r15)
+  0x58, 0x10, 0xc0, 0x08, // l %r1, 8(%r12)
+  0x07, 0xf1, // br %r1
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // padding
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::first_plt_entry_64[plt_entry_size] =
+{
+  0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, // stg %r1, 56(%r15)
+  0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, // larl %r1, _GLOBAL_OFFSET_TABLE_ (to fill)
+  0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, // mvc 48(8,%r15), 8(%r1)
+  0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, // lg %r1, 16(%r1)
+  0x07, 0xf1, // br %r1
+  0x07, 0x00, // nopr
+  0x07, 0x00, // nopr
+  0x07, 0x00, // nopr
+};
+
+template<int size>
+void
+Output_data_plt_s390<size>::fill_first_plt_entry(
+    unsigned char* pov,
+    typename elfcpp::Elf_types<size>::Elf_Addr got_address,
+    typename elfcpp::Elf_types<size>::Elf_Addr plt_address)
+{
+  if (size == 64)
+    {
+      memcpy(pov, first_plt_entry_64, plt_entry_size);
+      S390_relocate_functions<size>::pcrela32dbl(pov + 8, got_address, (plt_address + 6));
+    }
+  else if (!parameters->options().output_is_position_independent())
+    {
+      memcpy(pov, first_plt_entry_32_abs, plt_entry_size);
+      elfcpp::Swap<32, true>::writeval(pov + 24, got_address);
+    }
+  else
+    {
+      memcpy(pov, first_plt_entry_32_pic, plt_entry_size);
+    }
+}
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::plt_entry_32_abs[plt_entry_size] =
+{
+  // first part
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x16, // l %r1, 22(%r1)
+  0x58, 0x10, 0x10, 0x00, // l %r1, 0(%r1)
+  0x07, 0xf1, // br %r1
+  // second part
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x0e, // l %r1, 14(%r1)
+  0xa7, 0xf4, 0x00, 0x00, // j first_plt_entry (to fill)
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // _GLOBAL_OFFSET_TABLE_+sym@gotplt (to fill)
+  0x00, 0x00, 0x00, 0x00, // offset of relocation in .rela.plt (to fill)
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::plt_entry_32_pic12[plt_entry_size] =
+{
+  // first part
+  0x58, 0x10, 0xc0, 0x00, // l %r1, sym@gotplt(%r12) (to fill)
+  0x07, 0xf1, // br %r1
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // padding
+  // second part
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x0e, // l %r1, 14(%r1)
+  0xa7, 0xf4, 0x00, 0x00, // j first_plt_entry (to fill)
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // offset of relocation in .rela.plt (to fill)
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::plt_entry_32_pic16[plt_entry_size] =
+{
+  // first part
+  0xa7, 0x18, 0x00, 0x00, // lhi %r1, sym@gotplt (to fill)
+  0x58, 0x11, 0xc0, 0x00, // l %r1, 0(%r1, %r12)
+  0x07, 0xf1, // br %r1
+  0x00, 0x00, // padding
+  // second part
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x0e, // l %r1, 14(%r1)
+  0xa7, 0xf4, 0x00, 0x00, // j first_plt_entry (to fill)
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // offset of relocation in .rela.plt (to fill)
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::plt_entry_32_pic[plt_entry_size] =
+{
+  // first part
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x16, // l %r1, 22(%r1)
+  0x58, 0x11, 0xc0, 0x00, // l %r1, 0(%r1, %r12)
+  0x07, 0xf1, // br %r1
+  // second part
+  0x0d, 0x10, // basr %r1, %r0
+  0x58, 0x10, 0x10, 0x0e, // l %r1, 14(%r1)
+  0xa7, 0xf4, 0x00, 0x00, // j first_plt_entry (to fill)
+  0x00, 0x00, // padding
+  0x00, 0x00, 0x00, 0x00, // sym@gotplt (to fill)
+  0x00, 0x00, 0x00, 0x00, // offset of relocation in .rela.plt (to fill)
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::plt_entry_64[plt_entry_size] =
+{
+  // first part
+  0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, // larl %r1, _GLOBAL_OFFSET_TABLE_+off (to fill)
+  0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, // lg %r1, 0(%r1)
+  0x07, 0xf1, // br %r1
+  // second part
+  0x0d, 0x10, // basr %r1, %r0
+  0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, // lgf %r1, 12(%r1)
+  0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, // jg first_plt_entry (to fill)
+  0x00, 0x00, 0x00, 0x00, // offset of relocation in .rela.plt (to fill)
+};
+
+template<int size>
+unsigned int
+Output_data_plt_s390<size>::fill_plt_entry(
+    unsigned char* pov,
+    typename elfcpp::Elf_types<size>::Elf_Addr got_address,
+    typename elfcpp::Elf_types<size>::Elf_Addr plt_address,
+    unsigned int got_offset,
+    unsigned int plt_offset,
+    unsigned int plt_rel_offset)
+{
+  if (size == 64)
+  {
+    memcpy(pov, plt_entry_64, plt_entry_size);
+    S390_relocate_functions<size>::pcrela32dbl(pov + 2, got_address + got_offset, plt_address + plt_offset);
+    S390_relocate_functions<size>::pcrela32dbl(pov + 24, plt_address, plt_address + plt_offset + 22);
+  }
+  else
+  {
+    if (!parameters->options().output_is_position_independent())
+      {
+       memcpy(pov, plt_entry_32_abs, plt_entry_size);
+       elfcpp::Swap<32, true>::writeval(pov + 24, got_address + got_offset);
+      }
+    else
+      {
+       if (got_offset < 0x1000)
+         {
+           memcpy(pov, plt_entry_32_pic12, plt_entry_size);
+           S390_relocate_functions<size>::rela12(pov + 2, got_offset);
+         }
+       else if (got_offset < 0x8000)
+         {
+           memcpy(pov, plt_entry_32_pic16, plt_entry_size);
+           S390_relocate_functions<size>::rela16(pov + 2, got_offset);
+         }
+       else
+         {
+           memcpy(pov, plt_entry_32_pic, plt_entry_size);
+           elfcpp::Swap<32, true>::writeval(pov + 24, got_offset);
+         }
+      }
+    typename elfcpp::Elf_types<size>::Elf_Addr target = plt_address;
+    if (plt_offset >= 0x10000)
+      {
+       // Would overflow pcrela16dbl - aim at the farthest previous jump
+       // we can reach.
+       if (plt_offset > 0x10000)
+         {
+           // Use the full range of pcrel16dbl.
+           target = plt_address + plt_offset - 0x10000 + 18;
+         }
+       else
+         {
+           // if plt_offset is exactly 0x10000, the above would aim at 18th byte
+           // of first_plt_entry, which doesn't have the jump back like the others.
+           // Aim at the next entry instead.
+           target = plt_address + plt_offset - 0xffe0 + 18;
+         }
+      }
+    S390_relocate_functions<size>::pcrela16dbl(pov + 20, target, plt_address + plt_offset + 18);
+  }
+  elfcpp::Swap<32, true>::writeval(pov + 28, plt_rel_offset);
+  if (size == 64)
+    return 14;
+  else
+    return 12;
+}
+
+// The .eh_frame unwind information for the PLT.
+
+template<>
+const unsigned char
+Output_data_plt_s390<32>::plt_eh_frame_cie[plt_eh_frame_cie_size] =
+{
+  1,                           // CIE version.
+  'z',                         // Augmentation: augmentation size included.
+  'R',                         // Augmentation: FDE encoding included.
+  '\0',                                // End of augmentation string.
+  1,                           // Code alignment factor.
+  0x7c,                                // Data alignment factor.
+  14,                          // Return address column.
+  1,                           // Augmentation size.
+  (elfcpp::DW_EH_PE_pcrel      // FDE encoding.
+   | elfcpp::DW_EH_PE_sdata4),
+  elfcpp::DW_CFA_def_cfa, 15, 0x60,    // DW_CFA_def_cfa: r15 ofs 0x60.
+};
+
+template<>
+const unsigned char
+Output_data_plt_s390<64>::plt_eh_frame_cie[plt_eh_frame_cie_size] =
+{
+  1,                           // CIE version.
+  'z',                         // Augmentation: augmentation size included.
+  'R',                         // Augmentation: FDE encoding included.
+  '\0',                                // End of augmentation string.
+  1,                           // Code alignment factor.
+  0x78,                                // Data alignment factor.
+  14,                          // Return address column.
+  1,                           // Augmentation size.
+  (elfcpp::DW_EH_PE_pcrel      // FDE encoding.
+   | elfcpp::DW_EH_PE_sdata4),
+  elfcpp::DW_CFA_def_cfa, 15, 0xa0,    // DW_CFA_def_cfa: r15 ofs 0xa0.
+};
+
+template<int size>
+const unsigned char
+Output_data_plt_s390<size>::plt_eh_frame_fde[plt_eh_frame_fde_size] =
+{
+  0, 0, 0, 0,                          // Replaced with offset to .plt.
+  0, 0, 0, 0,                          // Replaced with size of .plt.
+  0,                                   // Augmentation size.
+  elfcpp::DW_CFA_nop,
+  elfcpp::DW_CFA_nop,
+  elfcpp::DW_CFA_nop
+};
+
+// Write out the PLT.  This uses the hand-coded instructions above,
+// and adjusts them as needed.
+
+template<int size>
+void
+Output_data_plt_s390<size>::do_write(Output_file* of)
+{
+  const off_t offset = this->offset();
+  const section_size_type oview_size =
+    convert_to_section_size_type(this->data_size());
+  unsigned char* const oview = of->get_output_view(offset, oview_size);
+
+  const off_t got_file_offset = this->got_plt_->offset();
+  gold_assert(parameters->incremental_update()
+             || (got_file_offset + this->got_plt_->data_size()
+                 == this->got_irelative_->offset()));
+  const section_size_type got_size =
+    convert_to_section_size_type(this->got_plt_->data_size()
+                                + this->got_irelative_->data_size());
+  unsigned char* const got_view = of->get_output_view(got_file_offset,
+                                                     got_size);
+
+  unsigned char* pov = oview;
+
+  // The base address of the .plt section.
+  typename elfcpp::Elf_types<size>::Elf_Addr plt_address = this->address();
+  // The base address of the PLT portion of the .got section,
+  // which is where the GOT pointer will point, and where the
+  // three reserved GOT entries are located.
+  typename elfcpp::Elf_types<size>::Elf_Addr got_address
+    = this->got_plt_->address();
+
+  this->fill_first_plt_entry(pov, got_address, plt_address);
+  pov += this->get_plt_entry_size();
+
+  unsigned char* got_pov = got_view;
+
+  const int rel_size = elfcpp::Elf_sizes<size>::rela_size;
+
+  unsigned int plt_offset = this->get_plt_entry_size();
+  unsigned int plt_rel_offset = 0;
+  unsigned int got_offset = 3 * size / 8;
+  const unsigned int count = this->count_ + this->irelative_count_;
+  // The first three entries in the GOT are reserved, and are written
+  // by Output_data_got_plt_s390::do_write.
+  got_pov += 3 * size / 8;
+
+  for (unsigned int plt_index = 0;
+       plt_index < count;
+       ++plt_index,
+        pov += plt_entry_size,
+        got_pov += size / 8,
+        plt_offset += plt_entry_size,
+        plt_rel_offset += rel_size,
+        got_offset += size / 8)
+    {
+      // Set and adjust the PLT entry itself.
+      unsigned int lazy_offset = this->fill_plt_entry(pov,
+                                                     got_address, plt_address,
+                                                     got_offset, plt_offset,
+                                                     plt_rel_offset);
+
+      // Set the entry in the GOT.
+      elfcpp::Swap<size, true>::writeval(got_pov,
+                                       plt_address + plt_offset + lazy_offset);
+    }
+
+  gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
+  gold_assert(static_cast<section_size_type>(got_pov - got_view) == got_size);
+
+  of->write_output_view(offset, oview_size, oview);
+  of->write_output_view(got_file_offset, got_size, got_view);
+}
+
+// Get the GOT section, creating it if necessary.
+
+template<int size>
+Output_data_got<size, true>*
+Target_s390<size>::got_section(Symbol_table* symtab, Layout* layout)
+{
+  if (this->got_ == NULL)
+    {
+      gold_assert(symtab != NULL && layout != NULL);
+
+      // When using -z now, we can treat .got as a relro section.
+      // Without -z now, it is modified after program startup by lazy
+      // PLT relocations.
+      bool is_got_relro = parameters->options().now();
+      Output_section_order got_order = (is_got_relro
+                                       ? ORDER_RELRO_LAST
+                                       : ORDER_DATA);
+
+      // The old GNU linker creates a .got.plt section.  We just
+      // create another set of data in the .got section.  Note that we
+      // always create a PLT if we create a GOT, although the PLT
+      // might be empty.
+      this->got_plt_ = new Output_data_got_plt_s390<size>(layout);
+      layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+                                     (elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE),
+                                     this->got_plt_, got_order, is_got_relro);
+
+      // The first three entries are reserved.
+      this->got_plt_->set_current_data_size(3 * size / 8);
+
+      // If there are any IRELATIVE relocations, they get GOT entries
+      // in .got.plt after the jump slot entries.
+      this->got_irelative_ = new Output_data_space(size / 8, "** GOT IRELATIVE PLT");
+      layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+                                     (elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE),
+                                     this->got_irelative_,
+                                     got_order, is_got_relro);
+
+      // Unlike some targets (.e.g x86), S/390 does not use separate .got and
+      // .got.plt sections in output.  The output .got section contains both
+      // PLT and non-PLT GOT entries.
+      this->got_ = new Output_data_got<size, true>();
+
+      layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+                                     (elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE),
+                                     this->got_, got_order, is_got_relro);
+
+      // Define _GLOBAL_OFFSET_TABLE_ at the start of the GOT.
+      this->global_offset_table_ =
+        symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
+                                     Symbol_table::PREDEFINED,
+                                     this->got_plt_,
+                                     0, 0, elfcpp::STT_OBJECT,
+                                     elfcpp::STB_LOCAL,
+                                     elfcpp::STV_HIDDEN, 0,
+                                     false, false);
+
+    }
+  return this->got_;
+}
+
+// Get the dynamic reloc section, creating it if necessary.
+
+template<int size>
+typename Target_s390<size>::Reloc_section*
+Target_s390<size>::rela_dyn_section(Layout* layout)
+{
+  if (this->rela_dyn_ == NULL)
+    {
+      gold_assert(layout != NULL);
+      this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
+      layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
+                                     elfcpp::SHF_ALLOC, this->rela_dyn_,
+                                     ORDER_DYNAMIC_RELOCS, false);
+    }
+  return this->rela_dyn_;
+}
+
+// Get the section to use for IRELATIVE relocs, creating it if
+// necessary.  These go in .rela.dyn, but only after all other dynamic
+// relocations.  They need to follow the other dynamic relocations so
+// that they can refer to global variables initialized by those
+// relocs.
+
+template<int size>
+typename Target_s390<size>::Reloc_section*
+Target_s390<size>::rela_irelative_section(Layout* layout)
+{
+  if (this->rela_irelative_ == NULL)
+    {
+      // Make sure we have already created the dynamic reloc section.
+      this->rela_dyn_section(layout);
+      this->rela_irelative_ = new Reloc_section(false);
+      layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
+                                     elfcpp::SHF_ALLOC, this->rela_irelative_,
+                                     ORDER_DYNAMIC_RELOCS, false);
+      gold_assert(this->rela_dyn_->output_section()
+                 == this->rela_irelative_->output_section());
+    }
+  return this->rela_irelative_;
+}
+
+// Write the first three reserved words of the .got.plt section.
+// The remainder of the section is written while writing the PLT
+// in Output_data_plt_s390::do_write.
+
+template<int size>
+void
+Output_data_got_plt_s390<size>::do_write(Output_file* of)
+{
+  // The first entry in the GOT is the address of the .dynamic section
+  // aka the PT_DYNAMIC segment.  The next two entries are reserved.
+  // We saved space for them when we created the section in
+  // Target_x86_64::got_section.
+  const off_t got_file_offset = this->offset();
+  gold_assert(this->data_size() >= 3 * size / 8);
+  unsigned char* const got_view =
+      of->get_output_view(got_file_offset, 3 * size / 8);
+  Output_section* dynamic = this->layout_->dynamic_section();
+  uint64_t dynamic_addr = dynamic == NULL ? 0 : dynamic->address();
+  elfcpp::Swap<size, true>::writeval(got_view, dynamic_addr);
+  memset(got_view + size / 8, 0, 2 * size / 8);
+  of->write_output_view(got_file_offset, 3 * size / 8, got_view);
+}
+
+// Create the PLT section.
+
+template<int size>
+void
+Target_s390<size>::make_plt_section(Symbol_table* symtab, Layout* layout)
+{
+  if (this->plt_ == NULL)
+    {
+      // Create the GOT sections first.
+      this->got_section(symtab, layout);
+
+      // Ensure that .rela.dyn always appears before .rela.plt  This is
+      // necessary due to how, on 32-bit S/390 and some other targets,
+      // .rela.dyn needs to include .rela.plt in it's range.
+      this->rela_dyn_section(layout);
+
+      this->plt_ = new Output_data_plt_s390<size>(layout,
+                     this->got_, this->got_plt_, this->got_irelative_);
+
+      // Add unwind information if requested.
+      if (parameters->options().ld_generated_unwind_info())
+       this->plt_->add_eh_frame(layout);
+
+      layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
+                                     (elfcpp::SHF_ALLOC
+                                      | elfcpp::SHF_EXECINSTR),
+                                     this->plt_, ORDER_PLT, false);
+
+      // Make the sh_info field of .rela.plt point to .plt.
+      Output_section* rela_plt_os = this->plt_->rela_plt()->output_section();
+      rela_plt_os->set_info_section(this->plt_->output_section());
+    }
+}
+
+// Create a PLT entry for a global symbol.
+
+template<int size>
+void
+Target_s390<size>::make_plt_entry(Symbol_table* symtab, Layout* layout,
+                                   Symbol* gsym)
+{
+  if (gsym->has_plt_offset())
+    return;
+
+  if (this->plt_ == NULL)
+    this->make_plt_section(symtab, layout);
+
+  this->plt_->add_entry(symtab, layout, gsym);
+}
+
+// Make a PLT entry for a local STT_GNU_IFUNC symbol.
+
+template<int size>
+void
+Target_s390<size>::make_local_ifunc_plt_entry(
+    Symbol_table* symtab, Layout* layout,
+    Sized_relobj_file<size, true>* relobj,
+    unsigned int local_sym_index)
+{
+  if (relobj->local_has_plt_offset(local_sym_index))
+    return;
+  if (this->plt_ == NULL)
+    this->make_plt_section(symtab, layout);
+  unsigned int plt_offset = this->plt_->add_local_ifunc_entry(symtab, layout,
+                                                             relobj,
+                                                             local_sym_index);
+  relobj->set_local_plt_offset(local_sym_index, plt_offset);
+}
+
+// Return the number of entries in the PLT.
+
+template<int size>
+unsigned int
+Target_s390<size>::plt_entry_count() const
+{
+  if (this->plt_ == NULL)
+    return 0;
+  return this->plt_->entry_count();
+}
+
+// Return the offset of the first non-reserved PLT entry.
+
+template<int size>
+unsigned int
+Target_s390<size>::first_plt_entry_offset() const
+{
+  return this->plt_->first_plt_entry_offset();
+}
+
+// Return the size of each PLT entry.
+
+template<int size>
+unsigned int
+Target_s390<size>::plt_entry_size() const
+{
+  return this->plt_->get_plt_entry_size();
+}
+
+// Create the GOT and PLT sections for an incremental update.
+
+template<int size>
+Output_data_got_base*
+Target_s390<size>::init_got_plt_for_update(Symbol_table* symtab,
+                                      Layout* layout,
+                                      unsigned int got_count,
+                                      unsigned int plt_count)
+{
+  gold_assert(this->got_ == NULL);
+
+  // Add the three reserved entries.
+  this->got_plt_ = new Output_data_got_plt_s390<size>(layout, (plt_count + 3) * size / 8);
+  layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+                                 (elfcpp::SHF_ALLOC
+                                  | elfcpp::SHF_WRITE),
+                                 this->got_plt_, ORDER_NON_RELRO_FIRST,
+                                 false);
+
+  // If there are any IRELATIVE relocations, they get GOT entries in
+  // .got.plt after the jump slot entries.
+  this->got_irelative_ = new Output_data_space(0, size / 8, "** GOT IRELATIVE PLT");
+  layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+                                 elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
+                                 this->got_irelative_,
+                                 ORDER_NON_RELRO_FIRST, false);
+
+  this->got_ = new Output_data_got<size, true>(got_count * size / 8);
+  layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+                                 (elfcpp::SHF_ALLOC
+                                  | elfcpp::SHF_WRITE),
+                                 this->got_, ORDER_RELRO_LAST,
+                                 true);
+
+  // Define _GLOBAL_OFFSET_TABLE_ at the start of the PLT.
+  this->global_offset_table_ =
+    symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
+                                 Symbol_table::PREDEFINED,
+                                 this->got_plt_,
+                                 0, 0, elfcpp::STT_OBJECT,
+                                 elfcpp::STB_LOCAL,
+                                 elfcpp::STV_HIDDEN, 0,
+                                 false, false);
+
+  // Create the PLT section.
+  this->plt_ = new Output_data_plt_s390<size>(layout,
+                 this->got_, this->got_plt_, this->got_irelative_, plt_count);
+
+  // Add unwind information if requested.
+  if (parameters->options().ld_generated_unwind_info())
+    this->plt_->add_eh_frame(layout);
+
+  layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
+                                 elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR,
+                                 this->plt_, ORDER_PLT, false);
+
+  // Make the sh_info field of .rela.plt point to .plt.
+  Output_section* rela_plt_os = this->plt_->rela_plt()->output_section();
+  rela_plt_os->set_info_section(this->plt_->output_section());
+
+  // Create the rela_dyn section.
+  this->rela_dyn_section(layout);
+
+  return this->got_;
+}
+
+// Reserve a GOT entry for a local symbol, and regenerate any
+// necessary dynamic relocations.
+
+template<int size>
+void
+Target_s390<size>::reserve_local_got_entry(
+    unsigned int got_index,
+    Sized_relobj<size, true>* obj,
+    unsigned int r_sym,
+    unsigned int got_type)
+{
+  unsigned int got_offset = got_index * size / 8;
+  Reloc_section* rela_dyn = this->rela_dyn_section(NULL);
+
+  this->got_->reserve_local(got_index, obj, r_sym, got_type);
+  switch (got_type)
+    {
+    case GOT_TYPE_STANDARD:
+      if (parameters->options().output_is_position_independent())
+       rela_dyn->add_local_relative(obj, r_sym, elfcpp::R_390_RELATIVE,
+                                    this->got_, got_offset, 0, false);
+      break;
+    case GOT_TYPE_TLS_OFFSET:
+      rela_dyn->add_local(obj, r_sym, elfcpp::R_390_TLS_TPOFF,
+                         this->got_, got_offset, 0);
+      break;
+    case GOT_TYPE_TLS_PAIR:
+      this->got_->reserve_slot(got_index + 1);
+      rela_dyn->add_local(obj, r_sym, elfcpp::R_390_TLS_DTPMOD,
+                         this->got_, got_offset, 0);
+      break;
+    default:
+      gold_unreachable();
+    }
+}
+
+// Reserve a GOT entry for a global symbol, and regenerate any
+// necessary dynamic relocations.
+
+template<int size>
+void
+Target_s390<size>::reserve_global_got_entry(unsigned int got_index,
+                                             Symbol* gsym,
+                                             unsigned int got_type)
+{
+  unsigned int got_offset = got_index * size / 8;
+  Reloc_section* rela_dyn = this->rela_dyn_section(NULL);
+
+  this->got_->reserve_global(got_index, gsym, got_type);
+  switch (got_type)
+    {
+    case GOT_TYPE_STANDARD:
+      if (!gsym->final_value_is_known())
+       {
+         if (gsym->is_from_dynobj()
+             || gsym->is_undefined()
+             || gsym->is_preemptible()
+             || gsym->type() == elfcpp::STT_GNU_IFUNC)
+           rela_dyn->add_global(gsym, elfcpp::R_390_GLOB_DAT,
+                                this->got_, got_offset, 0);
+         else
+           rela_dyn->add_global_relative(gsym, elfcpp::R_390_RELATIVE,
+                                         this->got_, got_offset, 0, false);
+       }
+      break;
+    case GOT_TYPE_TLS_OFFSET:
+      rela_dyn->add_global_relative(gsym, elfcpp::R_390_TLS_TPOFF,
+                                   this->got_, got_offset, 0, false);
+      break;
+    case GOT_TYPE_TLS_PAIR:
+      this->got_->reserve_slot(got_index + 1);
+      rela_dyn->add_global_relative(gsym, elfcpp::R_390_TLS_DTPMOD,
+                                   this->got_, got_offset, 0, false);
+      rela_dyn->add_global_relative(gsym, elfcpp::R_390_TLS_DTPOFF,
+                                   this->got_, got_offset + size / 8, 0, false);
+      break;
+    default:
+      gold_unreachable();
+    }
+}
+
+// Register an existing PLT entry for a global symbol.
+
+template<int size>
+void
+Target_s390<size>::register_global_plt_entry(Symbol_table* symtab,
+                                              Layout* layout,
+                                              unsigned int plt_index,
+                                              Symbol* gsym)
+{
+  gold_assert(this->plt_ != NULL);
+  gold_assert(!gsym->has_plt_offset());
+
+  this->plt_->reserve_slot(plt_index);
+
+  gsym->set_plt_offset((plt_index + 1) * this->plt_entry_size());
+
+  unsigned int got_offset = (plt_index + 3) * size / 8;
+  this->plt_->add_relocation(symtab, layout, gsym, got_offset);
+}
+
+// Force a COPY relocation for a given symbol.
+
+template<int size>
+void
+Target_s390<size>::emit_copy_reloc(
+    Symbol_table* symtab, Symbol* sym, Output_section* os, off_t offset)
+{
+  this->copy_relocs_.emit_copy_reloc(symtab,
+                                    symtab->get_sized_symbol<size>(sym),
+                                    os,
+                                    offset,
+                                    this->rela_dyn_section(NULL));
+}
+
+// Create a GOT entry for the TLS module index.
+
+template<int size>
+unsigned int
+Target_s390<size>::got_mod_index_entry(Symbol_table* symtab, Layout* layout,
+                                        Sized_relobj_file<size, true>* object)
+{
+  if (this->got_mod_index_offset_ == -1U)
+    {
+      gold_assert(symtab != NULL && layout != NULL && object != NULL);
+      Reloc_section* rela_dyn = this->rela_dyn_section(layout);
+      Output_data_got<size, true>* got = this->got_section(symtab, layout);
+      unsigned int got_offset = got->add_constant(0);
+      rela_dyn->add_local(object, 0, elfcpp::R_390_TLS_DTPMOD, got,
+                         got_offset, 0);
+      got->add_constant(0);
+      this->got_mod_index_offset_ = got_offset;
+    }
+  return this->got_mod_index_offset_;
+}
+
+// Optimize the TLS relocation type based on what we know about the
+// symbol.  IS_FINAL is true if the final address of this symbol is
+// known at link time.
+
+template<int size>
+tls::Tls_optimization
+Target_s390<size>::optimize_tls_reloc(bool is_final, int r_type)
+{
+  // If we are generating a shared library, then we can't do anything
+  // in the linker.
+  if (parameters->options().shared())
+    return tls::TLSOPT_NONE;
+
+  switch (r_type)
+    {
+    case elfcpp::R_390_TLS_GD32:
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_GDCALL:
+      // These are General-Dynamic which permits fully general TLS
+      // access.  Since we know that we are generating an executable,
+      // we can convert this to Initial-Exec.  If we also know that
+      // this is a local symbol, we can further switch to Local-Exec.
+      if (is_final)
+       return tls::TLSOPT_TO_LE;
+      return tls::TLSOPT_TO_IE;
+
+    case elfcpp::R_390_TLS_LDM32:
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_LDCALL:
+      // This is Local-Dynamic, which refers to a local symbol in the
+      // dynamic TLS block.  Since we know that we generating an
+      // executable, we can switch to Local-Exec.
+      return tls::TLSOPT_TO_LE;
+
+    case elfcpp::R_390_TLS_IE32:
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_LOAD:
+      // These are Initial-Exec relocs which get the thread offset
+      // from the GOT.  If we know that we are linking against the
+      // local symbol, we can switch to Local-Exec, which links the
+      // thread offset into the instruction.
+      if (is_final)
+       return tls::TLSOPT_TO_LE;
+      return tls::TLSOPT_NONE;
+
+    case elfcpp::R_390_TLS_GOTIE12:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_GOTIE20:
+      // These are Initial-Exec, but cannot be optimized.
+      return tls::TLSOPT_NONE;
+
+    case elfcpp::R_390_TLS_LE32:
+    case elfcpp::R_390_TLS_LE64:
+      // When we already have Local-Exec, there is nothing further we
+      // can do.
+      return tls::TLSOPT_NONE;
+
+    default:
+      gold_unreachable();
+    }
+}
+
+// Get the Reference_flags for a particular relocation.
+
+template<int size>
+int
+Target_s390<size>::Scan::get_reference_flags(unsigned int r_type)
+{
+  switch (r_type)
+    {
+    case elfcpp::R_390_NONE:
+    case elfcpp::R_390_GNU_VTINHERIT:
+    case elfcpp::R_390_GNU_VTENTRY:
+    case elfcpp::R_390_GOTPC:
+    case elfcpp::R_390_GOTPCDBL:
+      // No symbol reference.
+      return 0;
+
+    case elfcpp::R_390_64:
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_20:
+    case elfcpp::R_390_16:
+    case elfcpp::R_390_12:
+    case elfcpp::R_390_8:
+      return Symbol::ABSOLUTE_REF;
+
+    case elfcpp::R_390_PC12DBL:
+    case elfcpp::R_390_PC16:
+    case elfcpp::R_390_PC16DBL:
+    case elfcpp::R_390_PC24DBL:
+    case elfcpp::R_390_PC32:
+    case elfcpp::R_390_PC32DBL:
+    case elfcpp::R_390_PC64:
+    case elfcpp::R_390_GOTOFF16:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_GOTOFF64:
+      return Symbol::RELATIVE_REF;
+
+    case elfcpp::R_390_PLT12DBL:
+    case elfcpp::R_390_PLT16DBL:
+    case elfcpp::R_390_PLT24DBL:
+    case elfcpp::R_390_PLT32:
+    case elfcpp::R_390_PLT32DBL:
+    case elfcpp::R_390_PLT64:
+    case elfcpp::R_390_PLTOFF16:
+    case elfcpp::R_390_PLTOFF32:
+    case elfcpp::R_390_PLTOFF64:
+      return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF;
+
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTPLT12:
+    case elfcpp::R_390_GOTPLT16:
+    case elfcpp::R_390_GOTPLT20:
+    case elfcpp::R_390_GOTPLT32:
+    case elfcpp::R_390_GOTPLT64:
+    case elfcpp::R_390_GOTPLTENT:
+      // Absolute in GOT.
+      return Symbol::ABSOLUTE_REF;
+
+    case elfcpp::R_390_TLS_GD32:          // Global-dynamic
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_GDCALL:
+    case elfcpp::R_390_TLS_LDM32:         // Local-dynamic
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_LDCALL:
+    case elfcpp::R_390_TLS_IE32:          // Initial-exec
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_GOTIE12:
+    case elfcpp::R_390_TLS_GOTIE20:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_LOAD:
+    case elfcpp::R_390_TLS_LE32:          // Local-exec
+    case elfcpp::R_390_TLS_LE64:
+      return Symbol::TLS_REF;
+
+    case elfcpp::R_390_COPY:
+    case elfcpp::R_390_GLOB_DAT:
+    case elfcpp::R_390_JMP_SLOT:
+    case elfcpp::R_390_RELATIVE:
+    case elfcpp::R_390_IRELATIVE:
+    case elfcpp::R_390_TLS_TPOFF:
+    case elfcpp::R_390_TLS_DTPOFF:
+    case elfcpp::R_390_TLS_DTPMOD:
+    default:
+      // Not expected.  We will give an error later.
+      return 0;
+    }
+}
+
+// Report an unsupported relocation against a local symbol.
+
+template<int size>
+void
+Target_s390<size>::Scan::unsupported_reloc_local(
+     Sized_relobj_file<size, true>* object,
+     unsigned int r_type)
+{
+  gold_error(_("%s: unsupported reloc %u against local symbol"),
+            object->name().c_str(), r_type);
+}
+
+// We are about to emit a dynamic relocation of type R_TYPE.  If the
+// dynamic linker does not support it, issue an error.
+
+template<int size>
+void
+Target_s390<size>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
+{
+  gold_assert(r_type != elfcpp::R_390_NONE);
+
+  if (size == 64)
+    {
+      switch (r_type)
+       {
+         // These are the relocation types supported by glibc for s390 64-bit.
+       case elfcpp::R_390_RELATIVE:
+       case elfcpp::R_390_IRELATIVE:
+       case elfcpp::R_390_COPY:
+       case elfcpp::R_390_GLOB_DAT:
+       case elfcpp::R_390_JMP_SLOT:
+       case elfcpp::R_390_TLS_DTPMOD:
+       case elfcpp::R_390_TLS_DTPOFF:
+       case elfcpp::R_390_TLS_TPOFF:
+       case elfcpp::R_390_8:
+       case elfcpp::R_390_16:
+       case elfcpp::R_390_32:
+       case elfcpp::R_390_64:
+       case elfcpp::R_390_PC16:
+       case elfcpp::R_390_PC16DBL:
+       case elfcpp::R_390_PC32:
+       case elfcpp::R_390_PC32DBL:
+       case elfcpp::R_390_PC64:
+         return;
+
+       default:
+         break;
+       }
+    }
+  else
+    {
+      switch (r_type)
+       {
+         // These are the relocation types supported by glibc for s390 32-bit.
+       case elfcpp::R_390_RELATIVE:
+       case elfcpp::R_390_IRELATIVE:
+       case elfcpp::R_390_COPY:
+       case elfcpp::R_390_GLOB_DAT:
+       case elfcpp::R_390_JMP_SLOT:
+       case elfcpp::R_390_TLS_DTPMOD:
+       case elfcpp::R_390_TLS_DTPOFF:
+       case elfcpp::R_390_TLS_TPOFF:
+       case elfcpp::R_390_8:
+       case elfcpp::R_390_16:
+       case elfcpp::R_390_32:
+       case elfcpp::R_390_PC16:
+       case elfcpp::R_390_PC16DBL:
+       case elfcpp::R_390_PC32:
+       case elfcpp::R_390_PC32DBL:
+         return;
+
+       default:
+         break;
+       }
+    }
+
+  // This prevents us from issuing more than one error per reloc
+  // section.  But we can still wind up issuing more than one
+  // error per object file.
+  if (this->issued_non_pic_error_)
+    return;
+  gold_assert(parameters->options().output_is_position_independent());
+  object->error(_("requires unsupported dynamic reloc; "
+                 "recompile with -fPIC"));
+  this->issued_non_pic_error_ = true;
+  return;
+}
+
+// Return whether we need to make a PLT entry for a relocation of the
+// given type against a STT_GNU_IFUNC symbol.
+
+template<int size>
+bool
+Target_s390<size>::Scan::reloc_needs_plt_for_ifunc(
+     Sized_relobj_file<size, true>* object,
+     unsigned int r_type)
+{
+  int flags = Scan::get_reference_flags(r_type);
+  if (flags & Symbol::TLS_REF)
+    gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"),
+              object->name().c_str(), r_type);
+  return flags != 0;
+}
+
+// Scan a relocation for a local symbol.
+
+template<int size>
+inline void
+Target_s390<size>::Scan::local(Symbol_table* symtab,
+                                Layout* layout,
+                                Target_s390<size>* target,
+                                Sized_relobj_file<size, true>* object,
+                                unsigned int data_shndx,
+                                Output_section* output_section,
+                                const elfcpp::Rela<size, true>& reloc,
+                                unsigned int r_type,
+                                const elfcpp::Sym<size, true>& lsym,
+                                bool is_discarded)
+{
+  if (is_discarded)
+    return;
+
+  // A local STT_GNU_IFUNC symbol may require a PLT entry.
+  bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC;
+
+  if (is_ifunc && this->reloc_needs_plt_for_ifunc(object, r_type))
+    {
+      unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+      target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym);
+    }
+
+  switch (r_type)
+    {
+    case elfcpp::R_390_NONE:
+    case elfcpp::R_390_GNU_VTINHERIT:
+    case elfcpp::R_390_GNU_VTENTRY:
+      break;
+
+    case elfcpp::R_390_64:
+      // If building a shared library (or a position-independent
+      // executable), we need to create a dynamic relocation for this
+      // location.  The relocation applied at link time will apply the
+      // link-time value, so we flag the location with an
+      // R_390_RELATIVE relocation so the dynamic loader can
+      // relocate it easily.
+      if (parameters->options().output_is_position_independent() && size == 64)
+       {
+         unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+         Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+         rela_dyn->add_local_relative(object, r_sym,
+                                      elfcpp::R_390_RELATIVE,
+                                      output_section, data_shndx,
+                                      reloc.get_r_offset(),
+                                      reloc.get_r_addend(), is_ifunc);
+       }
+      break;
+
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_20:
+    case elfcpp::R_390_16:
+    case elfcpp::R_390_12:
+    case elfcpp::R_390_8:
+      if (parameters->options().output_is_position_independent())
+       {
+         if (size == 32 && r_type == elfcpp::R_390_32)
+           {
+             unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+             rela_dyn->add_local_relative(object, r_sym,
+                                          elfcpp::R_390_RELATIVE,
+                                          output_section, data_shndx,
+                                          reloc.get_r_offset(),
+                                          reloc.get_r_addend(), is_ifunc);
+             break;
+           }
+
+         check_non_pic(object, r_type);
+
+         Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+         unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+         if (lsym.get_st_type() != elfcpp::STT_SECTION)
+           rela_dyn->add_local(object, r_sym, r_type, output_section,
+                               data_shndx, reloc.get_r_offset(),
+                               reloc.get_r_addend());
+         else
+           {
+             gold_assert(lsym.get_st_value() == 0);
+             unsigned int shndx = lsym.get_st_shndx();
+             bool is_ordinary;
+             shndx = object->adjust_sym_shndx(r_sym, shndx,
+                                              &is_ordinary);
+             if (!is_ordinary)
+               object->error(_("section symbol %u has bad shndx %u"),
+                             r_sym, shndx);
+             else
+               rela_dyn->add_local_section(object, shndx,
+                                           r_type, output_section,
+                                           data_shndx, reloc.get_r_offset(),
+                                           reloc.get_r_addend());
+           }
+       }
+      break;
+
+    case elfcpp::R_390_PC12DBL:
+    case elfcpp::R_390_PC16:
+    case elfcpp::R_390_PC16DBL:
+    case elfcpp::R_390_PC24DBL:
+    case elfcpp::R_390_PC32:
+    case elfcpp::R_390_PC32DBL:
+    case elfcpp::R_390_PC64:
+      break;
+
+    case elfcpp::R_390_PLT12DBL:
+    case elfcpp::R_390_PLT16DBL:
+    case elfcpp::R_390_PLT24DBL:
+    case elfcpp::R_390_PLT32:
+    case elfcpp::R_390_PLT32DBL:
+    case elfcpp::R_390_PLT64:
+      // Since we know this is a local symbol, we can handle this as a
+      // PC32 reloc.
+      break;
+
+    case elfcpp::R_390_GOTPC:
+    case elfcpp::R_390_GOTPCDBL:
+    case elfcpp::R_390_GOTOFF16:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_GOTOFF64:
+    case elfcpp::R_390_PLTOFF16:
+    case elfcpp::R_390_PLTOFF32:
+    case elfcpp::R_390_PLTOFF64:
+      // We need a GOT section.
+      target->got_section(symtab, layout);
+      // For PLTOFF*, we'd normally want a PLT section, but since we
+      // know this is a local symbol, no PLT is needed.
+      break;
+
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTPLT12:
+    case elfcpp::R_390_GOTPLT16:
+    case elfcpp::R_390_GOTPLT20:
+    case elfcpp::R_390_GOTPLT32:
+    case elfcpp::R_390_GOTPLT64:
+    case elfcpp::R_390_GOTPLTENT:
+      {
+       // The symbol requires a GOT section.
+       Output_data_got<size, true>* got = target->got_section(symtab, layout);
+
+       // The symbol requires a GOT entry.
+       unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+
+       // For a STT_GNU_IFUNC symbol we want the PLT offset.  That
+       // lets function pointers compare correctly with shared
+       // libraries.  Otherwise we would need an IRELATIVE reloc.
+       bool is_new;
+       if (is_ifunc)
+         is_new = got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD);
+       else
+         is_new = got->add_local(object, r_sym, GOT_TYPE_STANDARD);
+       if (is_new)
+         {
+           // If we are generating a shared object, we need to add a
+           // dynamic relocation for this symbol's GOT entry.
+           if (parameters->options().output_is_position_independent())
+             {
+               Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+               unsigned int got_offset =
+                 object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
+               rela_dyn->add_local_relative(object, r_sym,
+                                            elfcpp::R_390_RELATIVE,
+                                            got, got_offset, 0, is_ifunc);
+             }
+         }
+       // For GOTPLT*, we'd normally want a PLT section, but since
+       // we know this is a local symbol, no PLT is needed.
+      }
+      break;
+
+    case elfcpp::R_390_COPY:
+    case elfcpp::R_390_GLOB_DAT:
+    case elfcpp::R_390_JMP_SLOT:
+    case elfcpp::R_390_RELATIVE:
+    case elfcpp::R_390_IRELATIVE:
+      // These are outstanding tls relocs, which are unexpected when linking
+    case elfcpp::R_390_TLS_TPOFF:
+    case elfcpp::R_390_TLS_DTPOFF:
+    case elfcpp::R_390_TLS_DTPMOD:
+      gold_error(_("%s: unexpected reloc %u in object file"),
+                object->name().c_str(), r_type);
+      break;
+
+      // These are initial tls relocs, which are expected when linking
+    case elfcpp::R_390_TLS_GD32:          // Global-dynamic
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_GDCALL:
+    case elfcpp::R_390_TLS_LDM32:         // Local-dynamic
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_LDCALL:
+    case elfcpp::R_390_TLS_IE32:          // Initial-exec
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_GOTIE12:
+    case elfcpp::R_390_TLS_GOTIE20:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_LOAD:
+    case elfcpp::R_390_TLS_LE32:          // Local-exec
+    case elfcpp::R_390_TLS_LE64:
+      {
+       bool output_is_shared = parameters->options().shared();
+       const tls::Tls_optimization optimized_type
+           = Target_s390<size>::optimize_tls_reloc(!output_is_shared,
+                                                     r_type);
+       switch (r_type)
+         {
+         case elfcpp::R_390_TLS_GD32:       // General-dynamic
+         case elfcpp::R_390_TLS_GD64:
+         case elfcpp::R_390_TLS_GDCALL:
+           if (optimized_type == tls::TLSOPT_NONE)
+             {
+               // Create a pair of GOT entries for the module index and
+               // dtv-relative offset.
+               Output_data_got<size, true>* got
+                   = target->got_section(symtab, layout);
+               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+               unsigned int shndx = lsym.get_st_shndx();
+               bool is_ordinary;
+               shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
+               if (!is_ordinary)
+                 object->error(_("local symbol %u has bad shndx %u"),
+                             r_sym, shndx);
+               else
+                 got->add_local_pair_with_rel(object, r_sym,
+                                              shndx,
+                                              GOT_TYPE_TLS_PAIR,
+                                              target->rela_dyn_section(layout),
+                                              elfcpp::R_390_TLS_DTPMOD);
+             }
+           else if (optimized_type != tls::TLSOPT_TO_LE)
+             unsupported_reloc_local(object, r_type);
+           break;
+
+         case elfcpp::R_390_TLS_LDM32:       // Local-dynamic
+         case elfcpp::R_390_TLS_LDM64:
+         case elfcpp::R_390_TLS_LDCALL:
+           if (optimized_type == tls::TLSOPT_NONE)
+             {
+               // Create a GOT entry for the module index.
+               target->got_mod_index_entry(symtab, layout, object);
+             }
+           else if (optimized_type != tls::TLSOPT_TO_LE)
+             unsupported_reloc_local(object, r_type);
+           break;
+
+         case elfcpp::R_390_TLS_LDO32:
+         case elfcpp::R_390_TLS_LDO64:
+           break;
+
+         case elfcpp::R_390_TLS_IE32:    // Initial-exec
+         case elfcpp::R_390_TLS_IE64:
+           // These two involve an absolute address
+           if (parameters->options().shared()
+               && optimized_type == tls::TLSOPT_NONE)
+             {
+               if ((size == 32 && r_type == elfcpp::R_390_TLS_IE32) ||
+                   (size == 64 && r_type == elfcpp::R_390_TLS_IE64))
+                 {
+                   // We need to create a dynamic relocation.
+                   Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+                   unsigned int r_sym =
+                       elfcpp::elf_r_sym<size>(reloc.get_r_info());
+                   rela_dyn->add_local_relative(object, r_sym,
+                                               elfcpp::R_390_RELATIVE,
+                                               output_section, data_shndx,
+                                               reloc.get_r_offset(),
+                                               reloc.get_r_addend(), false);
+                 }
+               else
+                 {
+                   unsupported_reloc_local(object, r_type);
+                 }
+             }
+           // fall through
+         case elfcpp::R_390_TLS_IEENT:
+         case elfcpp::R_390_TLS_GOTIE12:
+         case elfcpp::R_390_TLS_GOTIE20:
+         case elfcpp::R_390_TLS_GOTIE32:
+         case elfcpp::R_390_TLS_GOTIE64:
+         case elfcpp::R_390_TLS_LOAD:
+           layout->set_has_static_tls();
+           if (optimized_type == tls::TLSOPT_NONE)
+             {
+               if (!output_is_shared)
+                 {
+                   // We're making an executable, and the symbol is local, but
+                   // we cannot optimize to LE.  Make a const GOT entry instead.
+                   Output_data_got<size, true>* got
+                       = target->got_section(symtab, layout);
+                   unsigned int r_sym
+                       = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+                   got->add_local_plt(object, r_sym, GOT_TYPE_TLS_OFFSET);
+                 }
+               else
+               {
+                 // Create a GOT entry for the tp-relative offset.
+                 Output_data_got<size, true>* got
+                     = target->got_section(symtab, layout);
+                 unsigned int r_sym
+                     = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+                 got->add_local_with_rel(object, r_sym, GOT_TYPE_TLS_OFFSET,
+                                         target->rela_dyn_section(layout),
+                                         elfcpp::R_390_TLS_TPOFF);
+               }
+             }
+           else if (optimized_type != tls::TLSOPT_TO_LE)
+             unsupported_reloc_local(object, r_type);
+           break;
+
+         case elfcpp::R_390_TLS_LE32:     // Local-exec
+         case elfcpp::R_390_TLS_LE64:
+           layout->set_has_static_tls();
+           if (output_is_shared)
+           {
+             // We need to create a dynamic relocation.
+             if ((size == 32 && r_type == elfcpp::R_390_TLS_LE32) ||
+                 (size == 64 && r_type == elfcpp::R_390_TLS_LE64))
+               {
+                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+                 unsigned int r_sym
+                     = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+                 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
+                 rela_dyn->add_local(object, r_sym, elfcpp::R_390_TLS_TPOFF,
+                                     output_section, data_shndx,
+                                     reloc.get_r_offset(),
+                                     reloc.get_r_addend());
+               }
+             else
+               {
+                 unsupported_reloc_local(object, r_type);
+               }
+           }
+           break;
+
+         default:
+           gold_unreachable();
+         }
+      }
+      break;
+
+    default:
+      gold_error(_("%s: unsupported reloc %u against local symbol"),
+                object->name().c_str(), r_type);
+      break;
+    }
+}
+
+// Scan a relocation for a global symbol.
+
+template<int size>
+inline void
+Target_s390<size>::Scan::global(Symbol_table* symtab,
+                           Layout* layout,
+                           Target_s390<size>* target,
+                           Sized_relobj_file<size, true>* object,
+                           unsigned int data_shndx,
+                           Output_section* output_section,
+                           const elfcpp::Rela<size, true>& reloc,
+                           unsigned int r_type,
+                           Symbol* gsym)
+{
+  // A STT_GNU_IFUNC symbol may require a PLT entry.
+  if (gsym->type() == elfcpp::STT_GNU_IFUNC
+      && this->reloc_needs_plt_for_ifunc(object, r_type))
+    target->make_plt_entry(symtab, layout, gsym);
+
+  switch (r_type)
+    {
+    case elfcpp::R_390_NONE:
+    case elfcpp::R_390_GNU_VTINHERIT:
+    case elfcpp::R_390_GNU_VTENTRY:
+      break;
+
+    case elfcpp::R_390_64:
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_20:
+    case elfcpp::R_390_16:
+    case elfcpp::R_390_12:
+    case elfcpp::R_390_8:
+      {
+       // Make a PLT entry if necessary.
+       if (gsym->needs_plt_entry())
+         {
+           target->make_plt_entry(symtab, layout, gsym);
+           // Since this is not a PC-relative relocation, we may be
+           // taking the address of a function. In that case we need to
+           // set the entry in the dynamic symbol table to the address of
+           // the PLT entry.
+           if (gsym->is_from_dynobj() && !parameters->options().shared())
+             gsym->set_needs_dynsym_value();
+         }
+       // Make a dynamic relocation if necessary.
+       if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
+         {
+           if (!parameters->options().output_is_position_independent()
+               && gsym->may_need_copy_reloc())
+             {
+               target->copy_reloc(symtab, layout, object,
+                                  data_shndx, output_section, gsym, reloc);
+             }
+           else if (((size == 64 && r_type == elfcpp::R_390_64)
+                     || (size == 32 && r_type == elfcpp::R_390_32))
+                    && gsym->type() == elfcpp::STT_GNU_IFUNC
+                    && gsym->can_use_relative_reloc(false)
+                    && !gsym->is_from_dynobj()
+                    && !gsym->is_undefined()
+                    && !gsym->is_preemptible())
+             {
+               // Use an IRELATIVE reloc for a locally defined
+               // STT_GNU_IFUNC symbol.  This makes a function
+               // address in a PIE executable match the address in a
+               // shared library that it links against.
+               Reloc_section* rela_dyn =
+                 target->rela_irelative_section(layout);
+               unsigned int r_type = elfcpp::R_390_IRELATIVE;
+               rela_dyn->add_symbolless_global_addend(gsym, r_type,
+                                                      output_section, object,
+                                                      data_shndx,
+                                                      reloc.get_r_offset(),
+                                                      reloc.get_r_addend());
+             }
+           else if (((size == 64 && r_type == elfcpp::R_390_64)
+                     || (size == 32 && r_type == elfcpp::R_390_32))
+                    && gsym->can_use_relative_reloc(false))
+             {
+               Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+               rela_dyn->add_global_relative(gsym, elfcpp::R_390_RELATIVE,
+                                             output_section, object,
+                                             data_shndx,
+                                             reloc.get_r_offset(),
+                                             reloc.get_r_addend(), false);
+             }
+           else
+             {
+               check_non_pic(object, r_type);
+               Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+               rela_dyn->add_global(gsym, r_type, output_section, object,
+                                    data_shndx, reloc.get_r_offset(),
+                                    reloc.get_r_addend());
+             }
+         }
+      }
+      break;
+
+    case elfcpp::R_390_PC12DBL:
+    case elfcpp::R_390_PC16:
+    case elfcpp::R_390_PC16DBL:
+    case elfcpp::R_390_PC24DBL:
+    case elfcpp::R_390_PC32:
+    case elfcpp::R_390_PC32DBL:
+    case elfcpp::R_390_PC64:
+      {
+       // Make a PLT entry if necessary.
+       if (gsym->needs_plt_entry())
+         {
+           target->make_plt_entry(symtab, layout, gsym);
+           // larl is often used to take address of a function.  Aim the
+           // symbol at the PLT entry.
+           if (gsym->is_from_dynobj() && !parameters->options().shared())
+             gsym->set_needs_dynsym_value();
+         }
+       // Make a dynamic relocation if necessary.
+       if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
+         {
+           if (parameters->options().output_is_executable()
+               && gsym->may_need_copy_reloc())
+             {
+               target->copy_reloc(symtab, layout, object,
+                                  data_shndx, output_section, gsym, reloc);
+             }
+           else
+             {
+               check_non_pic(object, r_type);
+               Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+               rela_dyn->add_global(gsym, r_type, output_section, object,
+                                    data_shndx, reloc.get_r_offset(),
+                                    reloc.get_r_addend());
+             }
+         }
+      }
+      break;
+
+    case elfcpp::R_390_PLT12DBL:
+    case elfcpp::R_390_PLT16DBL:
+    case elfcpp::R_390_PLT24DBL:
+    case elfcpp::R_390_PLT32:
+    case elfcpp::R_390_PLT32DBL:
+    case elfcpp::R_390_PLT64:
+      // If the symbol is fully resolved, this is just a PC32 reloc.
+      // Otherwise we need a PLT entry.
+      if (gsym->final_value_is_known())
+       break;
+      // If building a shared library, we can also skip the PLT entry
+      // if the symbol is defined in the output file and is protected
+      // or hidden.
+      if (gsym->is_defined()
+         && !gsym->is_from_dynobj()
+         && !gsym->is_preemptible())
+       break;
+      target->make_plt_entry(symtab, layout, gsym);
+      break;
+
+    case elfcpp::R_390_GOTPC:
+    case elfcpp::R_390_GOTPCDBL:
+    case elfcpp::R_390_GOTOFF16:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_GOTOFF64:
+    case elfcpp::R_390_PLTOFF16:
+    case elfcpp::R_390_PLTOFF32:
+    case elfcpp::R_390_PLTOFF64:
+      // We need a GOT section.
+      target->got_section(symtab, layout);
+      // For PLTOFF*, we also need a PLT entry (but only if the
+      // symbol is not fully resolved).
+      if ((r_type == elfcpp::R_390_PLTOFF16
+           || r_type == elfcpp::R_390_PLTOFF32
+          || r_type == elfcpp::R_390_PLTOFF64)
+         && !gsym->final_value_is_known())
+       target->make_plt_entry(symtab, layout, gsym);
+      break;
+
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTPLT12:
+    case elfcpp::R_390_GOTPLT16:
+    case elfcpp::R_390_GOTPLT20:
+    case elfcpp::R_390_GOTPLT32:
+    case elfcpp::R_390_GOTPLT64:
+    case elfcpp::R_390_GOTPLTENT:
+      {
+       // The symbol requires a GOT entry.
+       Output_data_got<size, true>* got = target->got_section(symtab, layout);
+
+       if (gsym->final_value_is_known())
+         {
+           // For a STT_GNU_IFUNC symbol we want the PLT address.
+           if (gsym->type() == elfcpp::STT_GNU_IFUNC)
+             got->add_global_plt(gsym, GOT_TYPE_STANDARD);
+           else
+             got->add_global(gsym, GOT_TYPE_STANDARD);
+         }
+       else
+         {
+           // If this symbol is not fully resolved, we need to add a
+           // dynamic relocation for it.
+           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+
+           // Use a GLOB_DAT rather than a RELATIVE reloc if:
+           //
+           // 1) The symbol may be defined in some other module.
+           //
+           // 2) We are building a shared library and this is a
+           // protected symbol; using GLOB_DAT means that the dynamic
+           // linker can use the address of the PLT in the main
+           // executable when appropriate so that function address
+           // comparisons work.
+           //
+           // 3) This is a STT_GNU_IFUNC symbol in position dependent
+           // code, again so that function address comparisons work.
+           if (gsym->is_from_dynobj()
+               || gsym->is_undefined()
+               || gsym->is_preemptible()
+               || (gsym->visibility() == elfcpp::STV_PROTECTED
+                   && parameters->options().shared())
+               || (gsym->type() == elfcpp::STT_GNU_IFUNC
+                   && parameters->options().output_is_position_independent()))
+             got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn,
+                                      elfcpp::R_390_GLOB_DAT);
+           else
+             {
+               // For a STT_GNU_IFUNC symbol we want to write the PLT
+               // offset into the GOT, so that function pointer
+               // comparisons work correctly.
+               bool is_new;
+               if (gsym->type() != elfcpp::STT_GNU_IFUNC)
+                 is_new = got->add_global(gsym, GOT_TYPE_STANDARD);
+               else
+                 {
+                   is_new = got->add_global_plt(gsym, GOT_TYPE_STANDARD);
+                   // Tell the dynamic linker to use the PLT address
+                   // when resolving relocations.
+                   if (gsym->is_from_dynobj()
+                       && !parameters->options().shared())
+                     gsym->set_needs_dynsym_value();
+                 }
+               if (is_new)
+                 {
+                   unsigned int got_off = gsym->got_offset(GOT_TYPE_STANDARD);
+                   rela_dyn->add_global_relative(gsym,
+                                                 elfcpp::R_390_RELATIVE,
+                                                 got, got_off, 0, false);
+                 }
+             }
+         }
+      }
+      break;
+
+    case elfcpp::R_390_COPY:
+    case elfcpp::R_390_GLOB_DAT:
+    case elfcpp::R_390_JMP_SLOT:
+    case elfcpp::R_390_RELATIVE:
+    case elfcpp::R_390_IRELATIVE:
+      // These are outstanding tls relocs, which are unexpected when linking
+    case elfcpp::R_390_TLS_TPOFF:
+    case elfcpp::R_390_TLS_DTPOFF:
+    case elfcpp::R_390_TLS_DTPMOD:
+      gold_error(_("%s: unexpected reloc %u in object file"),
+                object->name().c_str(), r_type);
+      break;
+
+      // These are initial tls relocs, which are expected for global()
+    case elfcpp::R_390_TLS_GD32:          // Global-dynamic
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_GDCALL:
+    case elfcpp::R_390_TLS_LDM32:         // Local-dynamic
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_LDCALL:
+    case elfcpp::R_390_TLS_IE32:          // Initial-exec
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_GOTIE12:
+    case elfcpp::R_390_TLS_GOTIE20:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_LOAD:
+    case elfcpp::R_390_TLS_LE32:          // Local-exec
+    case elfcpp::R_390_TLS_LE64:
+      {
+       // For the optimizable Initial-Exec model, we can treat undef symbols
+       // as final when building an executable.
+       const bool is_final = (gsym->final_value_is_known() ||
+                              ((r_type == elfcpp::R_390_TLS_IE32 ||
+                                r_type == elfcpp::R_390_TLS_IE64 ||
+                                r_type == elfcpp::R_390_TLS_GOTIE32 ||
+                                r_type == elfcpp::R_390_TLS_GOTIE64) &&
+                               gsym->is_undefined() &&
+                               parameters->options().output_is_executable()));
+       const tls::Tls_optimization optimized_type
+           = Target_s390<size>::optimize_tls_reloc(is_final, r_type);
+       switch (r_type)
+         {
+         case elfcpp::R_390_TLS_GD32:       // General-dynamic
+         case elfcpp::R_390_TLS_GD64:
+         case elfcpp::R_390_TLS_GDCALL:
+           if (optimized_type == tls::TLSOPT_NONE)
+             {
+               // Create a pair of GOT entries for the module index and
+               // dtv-relative offset.
+               Output_data_got<size, true>* got
+                   = target->got_section(symtab, layout);
+               got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR,
+                                             target->rela_dyn_section(layout),
+                                             elfcpp::R_390_TLS_DTPMOD,
+                                             elfcpp::R_390_TLS_DTPOFF);
+             }
+           else if (optimized_type == tls::TLSOPT_TO_IE)
+             {
+               // Create a GOT entry for the tp-relative offset.
+               Output_data_got<size, true>* got
+                   = target->got_section(symtab, layout);
+               got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET,
+                                        target->rela_dyn_section(layout),
+                                        elfcpp::R_390_TLS_TPOFF);
+             }
+           else if (optimized_type != tls::TLSOPT_TO_LE)
+             unsupported_reloc_global(object, r_type, gsym);
+           break;
+
+         case elfcpp::R_390_TLS_LDM32:       // Local-dynamic
+         case elfcpp::R_390_TLS_LDM64:
+         case elfcpp::R_390_TLS_LDCALL:
+           if (optimized_type == tls::TLSOPT_NONE)
+             {
+               // Create a GOT entry for the module index.
+               target->got_mod_index_entry(symtab, layout, object);
+             }
+           else if (optimized_type != tls::TLSOPT_TO_LE)
+             unsupported_reloc_global(object, r_type, gsym);
+           break;
+
+         case elfcpp::R_390_TLS_LDO32:
+         case elfcpp::R_390_TLS_LDO64:
+           break;
+
+         case elfcpp::R_390_TLS_IE32:    // Initial-exec
+         case elfcpp::R_390_TLS_IE64:
+           // These two involve an absolute address
+           if (parameters->options().shared())
+             {
+               if ((size == 32 && r_type == elfcpp::R_390_TLS_IE32) ||
+                   (size == 64 && r_type == elfcpp::R_390_TLS_IE64))
+                 {
+                   // We need to create a dynamic relocation.
+                   Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+                   rela_dyn->add_global_relative(gsym, elfcpp::R_390_RELATIVE,
+                                                 output_section, object,
+                                                 data_shndx,
+                                                 reloc.get_r_offset(),
+                                                 reloc.get_r_addend(), false);
+                 }
+               else
+                 {
+                   unsupported_reloc_global(object, r_type, gsym);
+                 }
+             }
+           // fall through
+         case elfcpp::R_390_TLS_IEENT:
+         case elfcpp::R_390_TLS_GOTIE12:
+         case elfcpp::R_390_TLS_GOTIE20:
+         case elfcpp::R_390_TLS_GOTIE32:
+         case elfcpp::R_390_TLS_GOTIE64:
+         case elfcpp::R_390_TLS_LOAD:
+           layout->set_has_static_tls();
+           if (optimized_type == tls::TLSOPT_NONE)
+             {
+               if (is_final && !parameters->options().shared())
+                 {
+                   // We're making an executable, and the symbol is local, but
+                   // we cannot optimize to LE.  Make a const GOT entry instead.
+                   Output_data_got<size, true>* got
+                       = target->got_section(symtab, layout);
+                   got->add_global_plt(gsym, GOT_TYPE_TLS_OFFSET);
+                 }
+               else
+                 {
+                   // Create a GOT entry for the tp-relative offset.
+                   Output_data_got<size, true>* got
+                       = target->got_section(symtab, layout);
+                   got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET,
+                                            target->rela_dyn_section(layout),
+                                            elfcpp::R_390_TLS_TPOFF);
+                 }
+             }
+           else if (optimized_type != tls::TLSOPT_TO_LE)
+             unsupported_reloc_global(object, r_type, gsym);
+           break;
+
+         case elfcpp::R_390_TLS_LE32:     // Local-exec
+         case elfcpp::R_390_TLS_LE64:
+           layout->set_has_static_tls();
+           if (parameters->options().shared())
+             {
+               // We need to create a dynamic relocation.
+               if ((size == 32 && r_type == elfcpp::R_390_TLS_LE32) ||
+                   (size == 64 && r_type == elfcpp::R_390_TLS_LE64))
+                 {
+                   Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+                   rela_dyn->add_global(gsym, elfcpp::R_390_TLS_TPOFF,
+                                        output_section, object,
+                                        data_shndx, reloc.get_r_offset(),
+                                        reloc.get_r_addend());
+                 }
+               else
+                 {
+                   unsupported_reloc_global(object, r_type, gsym);
+                 }
+             }
+           break;
+
+         default:
+           gold_unreachable();
+         }
+      }
+      break;
+
+    default:
+      gold_error(_("%s: unsupported reloc %u against global symbol %s"),
+                object->name().c_str(), r_type,
+                gsym->demangled_name().c_str());
+      break;
+    }
+}
+
+
+// Report an unsupported relocation against a global symbol.
+
+template<int size>
+void
+Target_s390<size>::Scan::unsupported_reloc_global(
+    Sized_relobj_file<size, true>* object,
+    unsigned int r_type,
+    Symbol* gsym)
+{
+  gold_error(_("%s: unsupported reloc %u against global symbol %s"),
+            object->name().c_str(), r_type, gsym->demangled_name().c_str());
+}
+
+// Returns true if this relocation type could be that of a function pointer.
+template<int size>
+inline bool
+Target_s390<size>::Scan::possible_function_pointer_reloc(unsigned int r_type)
+{
+  switch (r_type)
+    {
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_64:
+    case elfcpp::R_390_PC32DBL: // could be used by larl insn
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTOFF16:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_GOTOFF64:
+      return true;
+    }
+  return false;
+}
+
+// For safe ICF, scan a relocation for a local symbol to check if it
+// corresponds to a function pointer being taken.  In that case mark
+// the function whose pointer was taken as not foldable.
+
+template<int size>
+inline bool
+Target_s390<size>::Scan::local_reloc_may_be_function_pointer(
+  Symbol_table* ,
+  Layout* ,
+  Target_s390<size>* ,
+  Sized_relobj_file<size, true>* ,
+  unsigned int ,
+  Output_section* ,
+  const elfcpp::Rela<size, true>& ,
+  unsigned int r_type,
+  const elfcpp::Sym<size, true>&)
+{
+  // When building a shared library, do not fold any local symbols.
+  return (parameters->options().shared()
+         || possible_function_pointer_reloc(r_type));
+}
+
+// For safe ICF, scan a relocation for a global symbol to check if it
+// corresponds to a function pointer being taken.  In that case mark
+// the function whose pointer was taken as not foldable.
+
+template<int size>
+inline bool
+Target_s390<size>::Scan::global_reloc_may_be_function_pointer(
+  Symbol_table*,
+  Layout* ,
+  Target_s390<size>* ,
+  Sized_relobj_file<size, true>* ,
+  unsigned int ,
+  Output_section* ,
+  const elfcpp::Rela<size, true>& ,
+  unsigned int r_type,
+  Symbol* gsym)
+{
+  // When building a shared library, do not fold symbols whose visibility
+  // is hidden, internal or protected.
+  return ((parameters->options().shared()
+          && (gsym->visibility() == elfcpp::STV_INTERNAL
+              || gsym->visibility() == elfcpp::STV_PROTECTED
+              || gsym->visibility() == elfcpp::STV_HIDDEN))
+         || possible_function_pointer_reloc(r_type));
+}
+
+template<int size>
+void
+Target_s390<size>::gc_process_relocs(Symbol_table* symtab,
+                                      Layout* layout,
+                                      Sized_relobj_file<size, true>* object,
+                                      unsigned int data_shndx,
+                                      unsigned int sh_type,
+                                      const unsigned char* prelocs,
+                                      size_t reloc_count,
+                                      Output_section* output_section,
+                                      bool needs_special_offset_handling,
+                                      size_t local_symbol_count,
+                                      const unsigned char* plocal_symbols)
+{
+
+  if (sh_type == elfcpp::SHT_REL)
+    return;
+
+  gold::gc_process_relocs<size, true, Target_s390<size>, elfcpp::SHT_RELA,
+                         typename Target_s390<size>::Scan,
+                         typename Target_s390<size>::Relocatable_size_for_reloc>(
+    symtab,
+    layout,
+    this,
+    object,
+    data_shndx,
+    prelocs,
+    reloc_count,
+    output_section,
+    needs_special_offset_handling,
+    local_symbol_count,
+    plocal_symbols);
+}
+
+// Perform a relocation.
+
+template<int size>
+inline bool
+Target_s390<size>::Relocate::relocate(
+    const Relocate_info<size, true>* relinfo,
+    Target_s390<size>* target,
+    Output_section*,
+    size_t relnum,
+    const elfcpp::Rela<size, true>& rela,
+    unsigned int r_type,
+    const Sized_symbol<size>* gsym,
+    const Symbol_value<size>* psymval,
+    unsigned char* view,
+    typename elfcpp::Elf_types<size>::Elf_Addr address,
+    section_size_type view_size)
+{
+  if (view == NULL)
+    return true;
+
+  const Sized_relobj_file<size, true>* object = relinfo->object;
+
+  // Pick the value to use for symbols defined in the PLT.
+  Symbol_value<size> symval;
+  if (gsym != NULL
+      && gsym->use_plt_offset(Scan::get_reference_flags(r_type)))
+    {
+      symval.set_output_value(target->plt_address_for_global(gsym));
+      psymval = &symval;
+    }
+  else if (gsym == NULL && psymval->is_ifunc_symbol())
+    {
+      unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
+      if (object->local_has_plt_offset(r_sym))
+       {
+         symval.set_output_value(target->plt_address_for_local(object, r_sym));
+         psymval = &symval;
+       }
+    }
+
+  const elfcpp::Elf_Xword addend = rela.get_r_addend();
+
+  typename elfcpp::Elf_types<size>::Elf_Addr value = 0;
+
+  switch (r_type)
+    {
+    case elfcpp::R_390_PLT64:
+    case elfcpp::R_390_PLT32:
+    case elfcpp::R_390_PLT32DBL:
+    case elfcpp::R_390_PLT24DBL:
+    case elfcpp::R_390_PLT16DBL:
+    case elfcpp::R_390_PLT12DBL:
+      gold_assert(gsym == NULL
+                 || gsym->has_plt_offset()
+                 || gsym->final_value_is_known()
+                 || (gsym->is_defined()
+                     && !gsym->is_from_dynobj()
+                     && !gsym->is_preemptible()));
+      // fallthru
+    case elfcpp::R_390_8:
+    case elfcpp::R_390_12:
+    case elfcpp::R_390_16:
+    case elfcpp::R_390_20:
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_64:
+    case elfcpp::R_390_PC16:
+    case elfcpp::R_390_PC32:
+    case elfcpp::R_390_PC64:
+    case elfcpp::R_390_PC32DBL:
+    case elfcpp::R_390_PC24DBL:
+    case elfcpp::R_390_PC16DBL:
+    case elfcpp::R_390_PC12DBL:
+      value = psymval->value(object, addend);
+      break;
+
+    case elfcpp::R_390_GOTPC:
+    case elfcpp::R_390_GOTPCDBL:
+      gold_assert(gsym != NULL);
+      value = target->got_address() + addend;
+      break;
+
+    case elfcpp::R_390_PLTOFF64:
+    case elfcpp::R_390_PLTOFF32:
+    case elfcpp::R_390_PLTOFF16:
+      gold_assert(gsym == NULL
+                 || gsym->has_plt_offset()
+                 || gsym->final_value_is_known());
+      // fallthru
+    case elfcpp::R_390_GOTOFF64:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_GOTOFF16:
+      value = (psymval->value(object, addend)
+              - target->got_address());
+      break;
+
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTPLT12:
+    case elfcpp::R_390_GOTPLT16:
+    case elfcpp::R_390_GOTPLT20:
+    case elfcpp::R_390_GOTPLT32:
+    case elfcpp::R_390_GOTPLT64:
+    case elfcpp::R_390_GOTPLTENT:
+      {
+        unsigned int got_offset = 0;
+        if (gsym != NULL)
+         {
+           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
+           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
+         }
+        else
+         {
+           unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
+           gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
+           got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
+         }
+        value = got_offset + target->got_main_offset() + addend;
+      }
+      break;
+
+      // These are initial tls relocs, which are expected when linking
+    case elfcpp::R_390_TLS_LOAD:
+    case elfcpp::R_390_TLS_GDCALL:          // Global-dynamic
+    case elfcpp::R_390_TLS_GD32:
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_LDCALL:          // Local-dynamic
+    case elfcpp::R_390_TLS_LDM32:
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_GOTIE12:         // Initial-exec
+    case elfcpp::R_390_TLS_GOTIE20:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_IE32:
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_LE32:            // Local-exec
+    case elfcpp::R_390_TLS_LE64:
+      value = this->relocate_tls(relinfo, target, relnum, rela, r_type, gsym, psymval,
+                        view, view_size);
+      break;
+
+    default:
+      break;
+    }
+
+  typename S390_relocate_functions<size>::Status status
+      = S390_relocate_functions<size>::STATUS_OK;
+
+  switch (r_type)
+    {
+    case elfcpp::R_390_NONE:
+    case elfcpp::R_390_GNU_VTINHERIT:
+    case elfcpp::R_390_GNU_VTENTRY:
+    case elfcpp::R_390_TLS_GDCALL:
+    case elfcpp::R_390_TLS_LDCALL:
+    case elfcpp::R_390_TLS_LOAD:
+      break;
+
+    case elfcpp::R_390_64:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_GOTPLT64:
+    case elfcpp::R_390_PLTOFF64:
+    case elfcpp::R_390_GOTOFF64:
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_LE64:
+      Relocate_functions<size, true>::rela64(view, value, 0);
+      break;
+
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_GOTPLT32:
+    case elfcpp::R_390_PLTOFF32:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_TLS_GD32:
+    case elfcpp::R_390_TLS_LDM32:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_IE32:
+    case elfcpp::R_390_TLS_LE32:
+      Relocate_functions<size, true>::rela32(view, value, 0);
+      break;
+
+    case elfcpp::R_390_20:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOTPLT20:
+    case elfcpp::R_390_TLS_GOTIE20:
+      status = S390_relocate_functions<size>::rela20(view, value);
+      break;
+
+    case elfcpp::R_390_16:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_GOTPLT16:
+    case elfcpp::R_390_PLTOFF16:
+    case elfcpp::R_390_GOTOFF16:
+      status = S390_relocate_functions<size>::rela16(view, value);
+      break;
+
+    case elfcpp::R_390_12:
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOTPLT12:
+    case elfcpp::R_390_TLS_GOTIE12:
+      status = S390_relocate_functions<size>::rela12(view, value);
+      break;
+
+    case elfcpp::R_390_8:
+      Relocate_functions<size, true>::rela8(view, value, 0);
+      break;
+
+    case elfcpp::R_390_PC16:
+      Relocate_functions<size, true>::pcrela16(view, value, 0,
+                                              address);
+      break;
+
+    case elfcpp::R_390_PLT64:
+    case elfcpp::R_390_PC64:
+      Relocate_functions<size, true>::pcrela64(view, value, 0, address);
+      break;
+
+    case elfcpp::R_390_PLT32:
+    case elfcpp::R_390_PC32:
+    case elfcpp::R_390_GOTPC:
+      Relocate_functions<size, true>::pcrela32(view, value, 0, address);
+      break;
+
+    case elfcpp::R_390_PLT32DBL:
+    case elfcpp::R_390_PC32DBL:
+    case elfcpp::R_390_GOTPCDBL:
+      status = S390_relocate_functions<size>::pcrela32dbl(view, value, address);
+      break;
+
+    case elfcpp::R_390_PLT24DBL:
+    case elfcpp::R_390_PC24DBL:
+      status = S390_relocate_functions<size>::pcrela24dbl(view, value, address);
+      break;
+
+    case elfcpp::R_390_PLT16DBL:
+    case elfcpp::R_390_PC16DBL:
+      status = S390_relocate_functions<size>::pcrela16dbl(view, value, address);
+      break;
+
+    case elfcpp::R_390_PLT12DBL:
+    case elfcpp::R_390_PC12DBL:
+      status = S390_relocate_functions<size>::pcrela12dbl(view, value, address);
+      break;
+
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTPLTENT:
+    case elfcpp::R_390_TLS_IEENT:
+      value += target->got_address();
+      status = S390_relocate_functions<size>::pcrela32dbl(view, value, address);
+      break;
+
+    case elfcpp::R_390_COPY:
+    case elfcpp::R_390_GLOB_DAT:
+    case elfcpp::R_390_JMP_SLOT:
+    case elfcpp::R_390_RELATIVE:
+    case elfcpp::R_390_IRELATIVE:
+      // These are outstanding tls relocs, which are unexpected when linking
+    case elfcpp::R_390_TLS_TPOFF:
+    case elfcpp::R_390_TLS_DTPMOD:
+    case elfcpp::R_390_TLS_DTPOFF:
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unexpected reloc %u in object file"),
+                            r_type);
+      break;
+
+    default:
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc %u"),
+                            r_type);
+      break;
+    }
+
+  if (status != S390_relocate_functions<size>::STATUS_OK)
+    {
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("relocation overflow"));
+    }
+
+  return true;
+}
+
+// Perform a TLS relocation.
+
+template<int size>
+inline typename elfcpp::Elf_types<size>::Elf_Addr
+Target_s390<size>::Relocate::relocate_tls(
+    const Relocate_info<size, true>* relinfo,
+    Target_s390<size>* target,
+    size_t relnum,
+    const elfcpp::Rela<size, true>& rela,
+    unsigned int r_type,
+    const Sized_symbol<size>* gsym,
+    const Symbol_value<size>* psymval,
+    unsigned char* view,
+    section_size_type view_size)
+{
+  Output_segment* tls_segment = relinfo->layout->tls_segment();
+
+  const Sized_relobj_file<size, true>* object = relinfo->object;
+  const elfcpp::Elf_Xword addend = rela.get_r_addend();
+  elfcpp::Shdr<size, true> data_shdr(relinfo->data_shdr);
+  bool is_allocatable = (data_shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0;
+
+  typename elfcpp::Elf_types<size>::Elf_Addr value
+      = psymval->value(relinfo->object, addend);
+
+  const bool is_final = (gsym == NULL
+                        ? !parameters->options().shared()
+                        : gsym->final_value_is_known());
+  tls::Tls_optimization optimized_type
+      = Target_s390<size>::optimize_tls_reloc(is_final, r_type);
+  switch (r_type)
+    {
+    case elfcpp::R_390_TLS_GDCALL:            // Global-dynamic marker
+      if (optimized_type == tls::TLSOPT_TO_LE)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+         this->tls_gd_to_le(relinfo, relnum, rela, view, view_size);
+         break;
+       }
+      else
+       {
+         if (optimized_type == tls::TLSOPT_TO_IE)
+           {
+             this->tls_gd_to_ie(relinfo, relnum, rela, view, view_size);
+             break;
+           }
+         else if (optimized_type == tls::TLSOPT_NONE)
+           {
+             break;
+           }
+       }
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc %u"), r_type);
+      break;
+
+    case elfcpp::R_390_TLS_GD32:            // Global-dynamic
+    case elfcpp::R_390_TLS_GD64:
+      if (optimized_type == tls::TLSOPT_TO_LE)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+         return value - tls_segment->memsz();
+       }
+      else
+       {
+         unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
+                                  ? GOT_TYPE_TLS_OFFSET
+                                  : GOT_TYPE_TLS_PAIR);
+         if (gsym != NULL)
+           {
+             gold_assert(gsym->has_got_offset(got_type));
+             return (gsym->got_offset(got_type)
+                     + target->got_main_offset()
+                     + addend);
+           }
+         else
+           {
+             unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
+             gold_assert(object->local_has_got_offset(r_sym, got_type));
+             return (object->local_got_offset(r_sym, got_type)
+                     + target->got_main_offset()
+                     + addend);
+           }
+       }
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc %u"), r_type);
+      break;
+
+    case elfcpp::R_390_TLS_LDCALL:            // Local-dynamic marker
+      // This is a marker relocation. If the sequence is being turned to LE,
+      // we modify the instruction, otherwise the instruction is untouched.
+      if (optimized_type == tls::TLSOPT_TO_LE)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+         this->tls_ld_to_le(relinfo, relnum, rela, view, view_size);
+         break;
+       }
+      else if (optimized_type == tls::TLSOPT_NONE)
+       {
+         break;
+       }
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc %u"), r_type);
+      break;
+
+    case elfcpp::R_390_TLS_LDM32:            // Local-dynamic module
+    case elfcpp::R_390_TLS_LDM64:
+      if (optimized_type == tls::TLSOPT_TO_LE)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+         // Doesn't matter what we fill it with - it's going to be unused.
+         return 0;
+       }
+      else if (optimized_type == tls::TLSOPT_NONE)
+       {
+         // Relocate the field with the offset of the GOT entry for
+         // the module index.
+         return (target->got_mod_index_entry(NULL, NULL, NULL)
+                 + addend
+                 + target->got_main_offset());
+       }
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc %u"), r_type);
+      break;
+
+    case elfcpp::R_390_TLS_LDO32:         // Local-dynamic offset
+    case elfcpp::R_390_TLS_LDO64:
+      // This relocation type is used in debugging information.
+      // In that case we need to not optimize the value.  If the
+      // section is not allocatable, then we assume we should not
+      // optimize this reloc.
+      if (optimized_type == tls::TLSOPT_TO_LE && is_allocatable)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+         value -= tls_segment->memsz();
+       }
+      return value;
+
+    case elfcpp::R_390_TLS_LOAD:         // Initial-exec marker
+      // This is a marker relocation. If the sequence is being turned to LE,
+      // we modify the instruction, otherwise the instruction is untouched.
+      if (gsym != NULL
+         && gsym->is_undefined()
+         && parameters->options().output_is_executable())
+       {
+         Target_s390<size>::Relocate::tls_ie_to_le(relinfo, relnum,
+                                                     rela, view,
+                                                     view_size);
+         break;
+       }
+      else if (optimized_type == tls::TLSOPT_TO_LE)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+         Target_s390<size>::Relocate::tls_ie_to_le(relinfo, relnum,
+                                                     rela, view,
+                                                     view_size);
+         break;
+       }
+      else if (optimized_type == tls::TLSOPT_NONE)
+       {
+         break;
+       }
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc type %u"),
+                            r_type);
+      break;
+
+    case elfcpp::R_390_TLS_GOTIE12:       // Initial-exec, not optimizable
+    case elfcpp::R_390_TLS_GOTIE20:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_GOTIE32:       // Initial-exec, optimizable
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_IE32:
+    case elfcpp::R_390_TLS_IE64:
+      if (gsym != NULL
+         && gsym->is_undefined()
+         && parameters->options().output_is_executable()
+         // These three cannot be optimized to LE, no matter what
+         && r_type != elfcpp::R_390_TLS_GOTIE12
+         && r_type != elfcpp::R_390_TLS_GOTIE20
+         && r_type != elfcpp::R_390_TLS_IEENT)
+       {
+          return value;
+       }
+      else if (optimized_type == tls::TLSOPT_TO_LE)
+       {
+         if (tls_segment == NULL)
+           {
+             gold_assert(parameters->errors()->error_count() > 0
+                         || issue_undefined_symbol_error(gsym));
+             return 0;
+           }
+          return value - tls_segment->memsz();
+       }
+      else if (optimized_type == tls::TLSOPT_NONE)
+       {
+         // Relocate the field with the offset of the GOT entry for
+         // the tp-relative offset of the symbol.
+         unsigned int got_offset;
+         if (gsym != NULL)
+           {
+             gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
+             got_offset = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
+           }
+         else
+           {
+             unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
+             gold_assert(object->local_has_got_offset(r_sym,
+                                                      GOT_TYPE_TLS_OFFSET));
+             got_offset = object->local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET);
+           }
+         got_offset += target->got_main_offset();
+         if (r_type == elfcpp::R_390_TLS_IE32
+             || r_type == elfcpp::R_390_TLS_IE64)
+           return target->got_address() + got_offset + addend;
+         else
+           return got_offset + addend;
+       }
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported reloc type %u"),
+                            r_type);
+      break;
+
+    case elfcpp::R_390_TLS_LE32:          // Local-exec
+    case elfcpp::R_390_TLS_LE64:
+      if (tls_segment == NULL)
+       {
+         gold_assert(parameters->errors()->error_count() > 0
+                     || issue_undefined_symbol_error(gsym));
+         return 0;
+       }
+      return value - tls_segment->memsz();
+    }
+  return 0;
+}
+
+// Do a relocation in which we convert a TLS General-Dynamic to an
+// Initial-Exec.
+
+template<int size>
+inline void
+Target_s390<size>::Relocate::tls_gd_to_ie(
+    const Relocate_info<size, true>* relinfo,
+    size_t relnum,
+    const elfcpp::Rela<size, true>& rela,
+    unsigned char* view,
+    section_size_type view_size)
+{
+  tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 4);
+  if (view[0] == 0x4d)
+    {
+      // bas, don't care about details
+      // Change to l %r2, 0(%r2, %r12)
+      view[0] = 0x58;
+      view[1] = 0x22;
+      view[2] = 0xc0;
+      view[3] = 0x00;
+      return;
+    }
+  else if (view[0] == 0xc0)
+    {
+      tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 6);
+      // brasl %r14, __tls_get_offset@plt
+      if (view[1] == 0xe5)
+       {
+         // Change to l/lg %r2, 0(%r2, %r12)
+         // There was a PLT32DBL reloc at the last 4 bytes, overwrite its result.
+         if (size == 32)
+           {
+             // l
+             view[0] = 0x58;
+             view[1] = 0x22;
+             view[2] = 0xc0;
+             view[3] = 0x00;
+             // nop
+             view[4] = 0x07;
+             view[5] = 0x07;
+           }
+         else
+           {
+             // lg
+             view[0] = 0xe3;
+             view[1] = 0x22;
+             view[2] = 0xc0;
+             view[3] = 0;
+             view[4] = 0;
+             view[5] = 0x04;
+           }
+         return;
+       }
+    }
+  gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                        _("unsupported op for GD to IE"));
+}
+
+// Do a relocation in which we convert a TLS General-Dynamic to a
+// Local-Exec.
+
+template<int size>
+inline void
+Target_s390<size>::Relocate::tls_gd_to_le(
+    const Relocate_info<size, true>* relinfo,
+    size_t relnum,
+    const elfcpp::Rela<size, true>& rela,
+    unsigned char* view,
+    section_size_type view_size)
+{
+  tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 2);
+  if (view[0] == 0x0d)
+    {
+      // basr, change to nop
+      view[0] = 0x07;
+      view[1] = 0x07;
+    }
+  else if (view[0] == 0x4d)
+    {
+      tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 4);
+      // bas, don't care about details, change to nop
+      view[0] = 0x47;
+      view[1] = 0;
+      view[2] = 0;
+      view[3] = 0;
+      return;
+    }
+  else if (view[0] == 0xc0)
+    {
+      tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 6);
+      // brasl %r14, __tls_get_offset@plt
+      if (view[1] == 0xe5)
+       {
+         // Change to nop jump. There was a PLT32DBL reloc at the last
+         // 4 bytes, overwrite its result.
+         view[1] = 0x04;
+         view[2] = 0;
+         view[3] = 0;
+         view[4] = 0;
+         view[5] = 0;
+         return;
+       }
+    }
+  gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                        _("unsupported op for GD to LE"));
+}
+
+template<int size>
+inline void
+Target_s390<size>::Relocate::tls_ld_to_le(
+    const Relocate_info<size, true>* relinfo,
+    size_t relnum,
+    const elfcpp::Rela<size, true>& rela,
+    unsigned char* view,
+    section_size_type view_size)
+{
+  tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 4);
+
+  if (view[0] == 0x0d)
+    {
+      // basr, change to nop
+      view[0] = 0x07;
+      view[1] = 0x07;
+    }
+  else if (view[0] == 0x4d)
+    {
+      // bas, don't care about details, change to nop
+      view[0] = 0x47;
+      view[1] = 0;
+      view[2] = 0;
+      view[3] = 0;
+      return;
+    }
+  else if (view[0] == 0xc0)
+    {
+      tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 6);
+      // brasl %r14, __tls_get_offset@plt
+      if (view[1] == 0xe5)
+       {
+         // Change to nop jump. There was a PLT32DBL reloc at the last
+         // 4 bytes, overwrite its result.
+         view[1] = 0x04;
+         view[2] = 0;
+         view[3] = 0;
+         view[4] = 0;
+         view[5] = 0;
+         return;
+       }
+    }
+  gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                        _("unsupported op for LD to LE"));
+}
+
+// Do a relocation in which we convert a TLS Initial-Exec to a
+// Local-Exec.
+
+template<int size>
+inline void
+Target_s390<size>::Relocate::tls_ie_to_le(
+    const Relocate_info<size, true>* relinfo,
+    size_t relnum,
+    const elfcpp::Rela<size, true>& rela,
+    unsigned char* view,
+    section_size_type view_size)
+{
+  tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 4);
+
+  if (view[0] == 0x58)
+    {
+      // l %rX, 0(%rY) or l %rX, 0(%rY, %r12)
+      if ((view[2] & 0x0f) != 0 || view[3] != 0)
+       goto err;
+      int rx = view[1] >> 4 & 0xf;
+      int ry = view[1] & 0xf;
+      int rz = view[2] >> 4 & 0xf;
+      if (rz == 0)
+       {
+       }
+      else if (ry == 0)
+       {
+         ry = rz;
+       }
+      else if (rz == 12)
+       {
+       }
+      else if (ry == 12)
+       {
+         ry = rz;
+       }
+      else
+       goto err;
+      // to lr %rX, $rY
+      view[0] = 0x18;
+      view[1] = rx << 4 | ry;
+      // and insert a nop
+      view[2] = 0x07;
+      view[3] = 0x00;
+    }
+  else if (view[0] == 0xe3)
+    {
+      tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 6);
+      // lg %rX, 0(%rY) or lg %rX, 0(%rY, %r12)
+      if ((view[2] & 0x0f) != 0 ||
+         view[3] != 0 ||
+         view[4] != 0 ||
+         view[5] != 0x04)
+       goto err;
+      int rx = view[1] >> 4 & 0xf;
+      int ry = view[1] & 0xf;
+      int rz = view[2] >> 4 & 0xf;
+      if (rz == 0)
+       {
+       }
+      else if (ry == 0)
+       {
+         ry = rz;
+       }
+      else if (rz == 12)
+       {
+       }
+      else if (ry == 12)
+       {
+         ry = rz;
+       }
+      else
+       goto err;
+      // to sllg %rX, $rY, 0
+      view[0] = 0xeb;
+      view[1] = rx << 4 | ry;
+      view[2] = 0x00;
+      view[3] = 0x00;
+      view[4] = 0x00;
+      view[5] = 0x0d;
+    }
+  else
+    {
+err:
+      gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+                            _("unsupported op for IE to LE"));
+    }
+}
+
+// Scan relocations for a section.
+
+template<int size>
+void
+Target_s390<size>::scan_relocs(Symbol_table* symtab,
+                                Layout* layout,
+                                Sized_relobj_file<size, true>* object,
+                                unsigned int data_shndx,
+                                unsigned int sh_type,
+                                const unsigned char* prelocs,
+                                size_t reloc_count,
+                                Output_section* output_section,
+                                bool needs_special_offset_handling,
+                                size_t local_symbol_count,
+                                const unsigned char* plocal_symbols)
+{
+  if (sh_type == elfcpp::SHT_REL)
+    {
+      gold_error(_("%s: unsupported REL reloc section"),
+                object->name().c_str());
+      return;
+    }
+
+  gold::scan_relocs<size, true, Target_s390<size>, elfcpp::SHT_RELA,
+      typename Target_s390<size>::Scan>(
+    symtab,
+    layout,
+    this,
+    object,
+    data_shndx,
+    prelocs,
+    reloc_count,
+    output_section,
+    needs_special_offset_handling,
+    local_symbol_count,
+    plocal_symbols);
+}
+
+// Finalize the sections.
+
+template<int size>
+void
+Target_s390<size>::do_finalize_sections(
+    Layout* layout,
+    const Input_objects*,
+    Symbol_table* symtab)
+{
+  const Reloc_section* rel_plt = (this->plt_ == NULL
+                                 ? NULL
+                                 : this->plt_->rela_plt());
+  layout->add_target_dynamic_tags(false, this->got_plt_, rel_plt,
+                                 this->rela_dyn_, true, size == 32);
+
+  this->layout_ = layout;
+
+  // Emit any relocs we saved in an attempt to avoid generating COPY
+  // relocs.
+  if (this->copy_relocs_.any_saved_relocs())
+    this->copy_relocs_.emit(this->rela_dyn_section(layout));
+
+  // Set the size of the _GLOBAL_OFFSET_TABLE_ symbol to the size of
+  // the .got section.
+  Symbol* sym = this->global_offset_table_;
+  if (sym != NULL)
+    {
+      uint64_t data_size = this->got_->current_data_size();
+      symtab->get_sized_symbol<size>(sym)->set_symsize(data_size);
+    }
+
+  if (parameters->doing_static_link()
+      && (this->plt_ == NULL || !this->plt_->has_irelative_section()))
+    {
+      // If linking statically, make sure that the __rela_iplt symbols
+      // were defined if necessary, even if we didn't create a PLT.
+      static const Define_symbol_in_segment syms[] =
+       {
+         {
+           "__rela_iplt_start",        // name
+           elfcpp::PT_LOAD,            // segment_type
+           elfcpp::PF_W,               // segment_flags_set
+           elfcpp::PF(0),              // segment_flags_clear
+           0,                          // value
+           0,                          // size
+           elfcpp::STT_NOTYPE,         // type
+           elfcpp::STB_GLOBAL,         // binding
+           elfcpp::STV_HIDDEN,         // visibility
+           0,                          // nonvis
+           Symbol::SEGMENT_START,      // offset_from_base
+           true                        // only_if_ref
+         },
+         {
+           "__rela_iplt_end",          // name
+           elfcpp::PT_LOAD,            // segment_type
+           elfcpp::PF_W,               // segment_flags_set
+           elfcpp::PF(0),              // segment_flags_clear
+           0,                          // value
+           0,                          // size
+           elfcpp::STT_NOTYPE,         // type
+           elfcpp::STB_GLOBAL,         // binding
+           elfcpp::STV_HIDDEN,         // visibility
+           0,                          // nonvis
+           Symbol::SEGMENT_START,      // offset_from_base
+           true                        // only_if_ref
+         }
+       };
+
+      symtab->define_symbols(layout, 2, syms,
+                            layout->script_options()->saw_sections_clause());
+    }
+}
+
+// Return the size of a relocation while scanning during a relocatable
+// link.
+
+template<int size>
+unsigned int
+Target_s390<size>::Relocatable_size_for_reloc::get_size_for_reloc(
+    unsigned int r_type,
+    Relobj* object)
+{
+  switch (r_type)
+    {
+    case elfcpp::R_390_NONE:
+    case elfcpp::R_390_GNU_VTINHERIT:
+    case elfcpp::R_390_GNU_VTENTRY:
+    case elfcpp::R_390_TLS_GD32:          // Global-dynamic
+    case elfcpp::R_390_TLS_GD64:
+    case elfcpp::R_390_TLS_GDCALL:
+    case elfcpp::R_390_TLS_LDM32:         // Local-dynamic
+    case elfcpp::R_390_TLS_LDM64:
+    case elfcpp::R_390_TLS_LDO32:
+    case elfcpp::R_390_TLS_LDO64:
+    case elfcpp::R_390_TLS_LDCALL:
+    case elfcpp::R_390_TLS_IE32:          // Initial-exec
+    case elfcpp::R_390_TLS_IE64:
+    case elfcpp::R_390_TLS_IEENT:
+    case elfcpp::R_390_TLS_GOTIE12:
+    case elfcpp::R_390_TLS_GOTIE20:
+    case elfcpp::R_390_TLS_GOTIE32:
+    case elfcpp::R_390_TLS_GOTIE64:
+    case elfcpp::R_390_TLS_LOAD:
+    case elfcpp::R_390_TLS_LE32:          // Local-exec
+    case elfcpp::R_390_TLS_LE64:
+      return 0;
+
+    case elfcpp::R_390_64:
+    case elfcpp::R_390_PC64:
+    case elfcpp::R_390_GOT64:
+    case elfcpp::R_390_PLT64:
+    case elfcpp::R_390_GOTOFF64:
+    case elfcpp::R_390_GOTPLT64:
+    case elfcpp::R_390_PLTOFF64:
+      return 8;
+
+    case elfcpp::R_390_32:
+    case elfcpp::R_390_PC32:
+    case elfcpp::R_390_GOT32:
+    case elfcpp::R_390_PLT32:
+    case elfcpp::R_390_GOTOFF32:
+    case elfcpp::R_390_GOTPC:
+    case elfcpp::R_390_PC32DBL:
+    case elfcpp::R_390_PLT32DBL:
+    case elfcpp::R_390_GOTPCDBL:
+    case elfcpp::R_390_GOTENT:
+    case elfcpp::R_390_GOTPLT32:
+    case elfcpp::R_390_GOTPLTENT:
+    case elfcpp::R_390_PLTOFF32:
+    case elfcpp::R_390_20:
+    case elfcpp::R_390_GOT20:
+    case elfcpp::R_390_GOTPLT20:
+      return 4;
+
+    case elfcpp::R_390_PC24DBL:
+    case elfcpp::R_390_PLT24DBL:
+      return 3;
+
+    case elfcpp::R_390_12:
+    case elfcpp::R_390_GOT12:
+    case elfcpp::R_390_GOTPLT12:
+    case elfcpp::R_390_PC12DBL:
+    case elfcpp::R_390_PLT12DBL:
+    case elfcpp::R_390_16:
+    case elfcpp::R_390_GOT16:
+    case elfcpp::R_390_PC16:
+    case elfcpp::R_390_PC16DBL:
+    case elfcpp::R_390_PLT16DBL:
+    case elfcpp::R_390_GOTOFF16:
+    case elfcpp::R_390_GOTPLT16:
+    case elfcpp::R_390_PLTOFF16:
+      return 2;
+
+    case elfcpp::R_390_8:
+      return 1;
+
+      // These are relocations which should only be seen by the
+      // dynamic linker, and should never be seen here.
+    case elfcpp::R_390_COPY:
+    case elfcpp::R_390_GLOB_DAT:
+    case elfcpp::R_390_JMP_SLOT:
+    case elfcpp::R_390_RELATIVE:
+    case elfcpp::R_390_IRELATIVE:
+    case elfcpp::R_390_TLS_DTPMOD:
+    case elfcpp::R_390_TLS_DTPOFF:
+    case elfcpp::R_390_TLS_TPOFF:
+      object->error(_("unexpected reloc %u in object file"), r_type);
+      return 0;
+
+    default:
+      object->error(_("unsupported reloc %u in object file"), r_type);
+      return 0;
+    }
+}
+
+// Scan the relocs during a relocatable link.
+
+template<int size>
+void
+Target_s390<size>::scan_relocatable_relocs(
+    Symbol_table* symtab,
+    Layout* layout,
+    Sized_relobj_file<size, true>* object,
+    unsigned int data_shndx,
+    unsigned int sh_type,
+    const unsigned char* prelocs,
+    size_t reloc_count,
+    Output_section* output_section,
+    bool needs_special_offset_handling,
+    size_t local_symbol_count,
+    const unsigned char* plocal_symbols,
+    Relocatable_relocs* rr)
+{
+  gold_assert(sh_type == elfcpp::SHT_RELA);
+
+  typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
+    Relocatable_size_for_reloc> Scan_relocatable_relocs;
+
+  gold::scan_relocatable_relocs<size, true, elfcpp::SHT_RELA,
+      Scan_relocatable_relocs>(
+    symtab,
+    layout,
+    object,
+    data_shndx,
+    prelocs,
+    reloc_count,
+    output_section,
+    needs_special_offset_handling,
+    local_symbol_count,
+    plocal_symbols,
+    rr);
+}
+
+// Relocate a section during a relocatable link.
+
+template<int size>
+void
+Target_s390<size>::relocate_relocs(
+    const Relocate_info<size, true>* relinfo,
+    unsigned int sh_type,
+    const unsigned char* prelocs,
+    size_t reloc_count,
+    Output_section* output_section,
+    typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
+    const Relocatable_relocs* rr,
+    unsigned char* view,
+    typename elfcpp::Elf_types<size>::Elf_Addr view_address,
+    section_size_type view_size,
+    unsigned char* reloc_view,
+    section_size_type reloc_view_size)
+{
+  gold_assert(sh_type == elfcpp::SHT_RELA);
+
+  gold::relocate_relocs<size, true, elfcpp::SHT_RELA>(
+    relinfo,
+    prelocs,
+    reloc_count,
+    output_section,
+    offset_in_output_section,
+    rr,
+    view,
+    view_address,
+    view_size,
+    reloc_view,
+    reloc_view_size);
+}
+
+// Return the offset to use for the GOT_INDX'th got entry which is
+// for a local tls symbol specified by OBJECT, SYMNDX.
+template<int size>
+int64_t
+Target_s390<size>::do_tls_offset_for_local(
+    const Relobj*,
+    unsigned int,
+    unsigned int) const
+{
+  // The only way we can get called is when IEENT/GOTIE12/GOTIE20
+  // couldn't be optimised to LE.
+  Output_segment* tls_segment = layout_->tls_segment();
+  return -tls_segment->memsz();
+}
+
+// Return the offset to use for the GOT_INDX'th got entry which is
+// for global tls symbol GSYM.
+template<int size>
+int64_t
+Target_s390<size>::do_tls_offset_for_global(
+    Symbol*,
+    unsigned int) const
+{
+  Output_segment* tls_segment = layout_->tls_segment();
+  return -tls_segment->memsz();
+}
+
+// Return the value to use for a dynamic which requires special
+// treatment.  This is how we support equality comparisons of function
+// pointers across shared library boundaries, as described in the
+// processor specific ABI supplement.
+
+template<int size>
+uint64_t
+Target_s390<size>::do_dynsym_value(const Symbol* gsym) const
+{
+  gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
+  return this->plt_address_for_global(gsym);
+}
+
+// Return a string used to fill a code section with nops to take up
+// the specified length.
+
+template<int size>
+std::string
+Target_s390<size>::do_code_fill(section_size_type length) const
+{
+  if (length & 1)
+    gold_warning(_("S/390 code fill of odd length requested"));
+  return std::string(length, static_cast<char>(0x07));
+}
+
+// Relocate section data.
+
+template<int size>
+void
+Target_s390<size>::relocate_section(
+    const Relocate_info<size, true>* relinfo,
+    unsigned int sh_type,
+    const unsigned char* prelocs,
+    size_t reloc_count,
+    Output_section* output_section,
+    bool needs_special_offset_handling,
+    unsigned char* view,
+    typename elfcpp::Elf_types<size>::Elf_Addr address,
+    section_size_type view_size,
+    const Reloc_symbol_changes* reloc_symbol_changes)
+{
+  gold_assert(sh_type == elfcpp::SHT_RELA);
+
+  gold::relocate_section<size, true, Target_s390<size>, elfcpp::SHT_RELA,
+                        typename Target_s390<size>::Relocate,
+                        gold::Default_comdat_behavior>(
+    relinfo,
+    this,
+    prelocs,
+    reloc_count,
+    output_section,
+    needs_special_offset_handling,
+    view,
+    address,
+    view_size,
+    reloc_symbol_changes);
+}
+
+// Apply an incremental relocation.  Incremental relocations always refer
+// to global symbols.
+
+template<int size>
+void
+Target_s390<size>::apply_relocation(
+    const Relocate_info<size, true>* relinfo,
+    typename elfcpp::Elf_types<size>::Elf_Addr r_offset,
+    unsigned int r_type,
+    typename elfcpp::Elf_types<size>::Elf_Swxword r_addend,
+    const Symbol* gsym,
+    unsigned char* view,
+    typename elfcpp::Elf_types<size>::Elf_Addr address,
+    section_size_type view_size)
+{
+  gold::apply_relocation<size, true, Target_s390<size>,
+                        typename Target_s390<size>::Relocate>(
+    relinfo,
+    this,
+    r_offset,
+    r_type,
+    r_addend,
+    gsym,
+    view,
+    address,
+    view_size);
+}
+
+// The selector for s390 object files.
+
+template<int size>
+class Target_selector_s390 : public Target_selector
+{
+public:
+  Target_selector_s390()
+    : Target_selector(elfcpp::EM_S390, size, true,
+                     (size == 64 ? "elf64-s390" : "elf32-s390"),
+                     (size == 64 ? "elf64_s390" : "elf32_s390"))
+  { }
+
+  virtual Target*
+  do_instantiate_target()
+  { return new Target_s390<size>(); }
+};
+
+Target_selector_s390<32> target_selector_s390;
+Target_selector_s390<64> target_selector_s390x;
+
+} // End anonymous namespace.
index 9e6fffa1b2b8bd177dce52dc77adcbb0aa72b9ad..38d7bea3209352b0a90ff6a65dde75afc0ba269e 100755 (executable)
@@ -57,7 +57,7 @@ END {
 
 arch_specific_safe_fold()
 {
-    grep_x86=`grep -q -e "Advanced Micro Devices X86-64" -e "Intel 80386" -e "ARM" -e "TILE" -e "PowerPC" -e "AArch64" $2`
+    grep_x86=`grep -q -e "Advanced Micro Devices X86-64" -e "Intel 80386" -e "ARM" -e "TILE" -e "PowerPC" -e "AArch64" -e "IBM S/390" $2`
     if [ $? -eq 0 ];
     then
       check_fold $3 $4 $5