/* IBM S/390-specific support for 64-bit ELF
- Copyright 2000, 2001 Free Software Foundation, Inc.
+ Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of BFD, the Binary File Descriptor library.
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 2 of the License, or
+ 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,
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., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void elf_s390_info_to_howto
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-static boolean elf_s390_is_local_label_name PARAMS ((bfd *, const char *));
-static struct bfd_hash_entry *elf_s390_link_hash_newfunc
+static bfd_boolean elf_s390_is_local_label_name
+ PARAMS ((bfd *, const char *));
+static struct bfd_hash_entry *link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static struct bfd_link_hash_table *elf_s390_link_hash_table_create
PARAMS ((bfd *));
-static boolean elf_s390_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static asection *elf_s390_gc_mark_hook
- PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *));
-static boolean elf_s390_gc_sweep_hook
+static bfd_boolean create_got_section
+ PARAMS((bfd *, struct bfd_link_info *));
+static bfd_boolean elf_s390_create_dynamic_sections
+ PARAMS((bfd *, struct bfd_link_info *));
+static void elf_s390_copy_indirect_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
+ struct elf_link_hash_entry *));
+static bfd_boolean elf_s390_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
-static boolean elf_s390_adjust_dynamic_symbol
+struct elf_s390_link_hash_entry;
+static void elf_s390_adjust_gotplt
+ PARAMS ((struct elf_s390_link_hash_entry *));
+static bfd_boolean elf_s390_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static boolean elf_s390_size_dynamic_sections
+static bfd_boolean allocate_dynrelocs
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+static bfd_boolean readonly_dynrelocs
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+static bfd_boolean elf_s390_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf_s390_relocate_section
+static bfd_boolean elf_s390_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static boolean elf_s390_finish_dynamic_symbol
+static bfd_boolean elf_s390_finish_dynamic_symbol
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
Elf_Internal_Sym *));
-static boolean elf_s390_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf_s390_object_p PARAMS ((bfd *));
static enum elf_reloc_type_class elf_s390_reloc_type_class
PARAMS ((const Elf_Internal_Rela *));
-
-#define USE_RELA 1 /* We want RELA relocations, not REL. */
+static bfd_boolean elf_s390_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean elf_s390_object_p
+ PARAMS ((bfd *));
+static int elf_s390_tls_transition
+ PARAMS ((struct bfd_link_info *, int, int));
+static bfd_reloc_status_type s390_tls_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_vma dtpoff_base
+ PARAMS ((struct bfd_link_info *));
+static bfd_vma tpoff
+ PARAMS ((struct bfd_link_info *, bfd_vma));
+static void invalid_tls_insn
+ PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
+static bfd_reloc_status_type s390_elf_ldisp_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
#include "elf/s390.h"
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_390_NONE", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
-
- HOWTO(R_390_8, 0, 0, 8, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_8", false, 0,0x000000ff, false),
- HOWTO(R_390_12, 0, 1, 12, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_12", false, 0,0x00000fff, false),
- HOWTO(R_390_16, 0, 1, 16, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_16", false, 0,0x0000ffff, false),
- HOWTO(R_390_32, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_32", false, 0,0xffffffff, false),
- HOWTO(R_390_PC32, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32", false, 0,0xffffffff, true),
- HOWTO(R_390_GOT12, 0, 1, 12, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_GOT12", false, 0,0x00000fff, false),
- HOWTO(R_390_GOT32, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT32", false, 0,0xffffffff, false),
- HOWTO(R_390_PLT32, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32", false, 0,0xffffffff, true),
- HOWTO(R_390_COPY, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_COPY", false, 0,MINUS_ONE, false),
- HOWTO(R_390_GLOB_DAT, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GLOB_DAT",false, 0,MINUS_ONE, false),
- HOWTO(R_390_JMP_SLOT, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_JMP_SLOT",false, 0,MINUS_ONE, false),
- HOWTO(R_390_RELATIVE, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_RELATIVE",false, 0,MINUS_ONE, false),
- HOWTO(R_390_GOTOFF, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTOFF", false, 0,MINUS_ONE, false),
- HOWTO(R_390_GOTPC, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPC", false, 0,MINUS_ONE, true),
- HOWTO(R_390_GOT16, 0, 1, 16, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT16", false, 0,0x0000ffff, false),
- HOWTO(R_390_PC16, 0, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16", false, 0,0x0000ffff, true),
- HOWTO(R_390_PC16DBL, 1, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16DBL", false, 0,0x0000ffff, true),
- HOWTO(R_390_PLT16DBL, 1, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT16DBL", false, 0,0x0000ffff, true),
- HOWTO(R_390_PC32DBL, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32DBL", false, 0,0xffffffff, true),
- HOWTO(R_390_PLT32DBL, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32DBL", false, 0,0xffffffff, true),
- HOWTO(R_390_GOTPCDBL, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPCDBL", false, 0,MINUS_ONE, true),
- HOWTO(R_390_64, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_64", false, 0,MINUS_ONE, false),
- HOWTO(R_390_PC64, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC64", false, 0,MINUS_ONE, true),
- HOWTO(R_390_GOT64, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT64", false, 0,MINUS_ONE, false),
- HOWTO(R_390_PLT64, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT64", false, 0,MINUS_ONE, true),
- HOWTO(R_390_GOTENT, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTENT", false, 0,MINUS_ONE, true),
+ FALSE), /* pcrel_offset */
+
+ HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
+ HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
+ HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
+ HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
+ EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
+ HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
+ HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
+ HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
+ EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
+ HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
+ EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
+ HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
+ HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
+ HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
+ HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
+ HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
};
/* GNU extension to record C++ vtable hierarchy. */
static reloc_howto_type elf64_s390_vtinherit_howto =
- HOWTO (R_390_GNU_VTINHERIT, 0,4,0,false,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", false,0, 0, false);
+ HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
static reloc_howto_type elf64_s390_vtentry_howto =
- HOWTO (R_390_GNU_VTENTRY, 0,4,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", false,0,0, false);
+ HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
static reloc_howto_type *
elf_s390_reloc_type_lookup (abfd, code)
bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
- switch (code) {
- case BFD_RELOC_NONE:
- return &elf_howto_table[(int) R_390_NONE];
- case BFD_RELOC_8:
- return &elf_howto_table[(int) R_390_8];
- case BFD_RELOC_390_12:
- return &elf_howto_table[(int) R_390_12];
- case BFD_RELOC_16:
- return &elf_howto_table[(int) R_390_16];
- case BFD_RELOC_32:
- return &elf_howto_table[(int) R_390_32];
- case BFD_RELOC_CTOR:
- return &elf_howto_table[(int) R_390_32];
- case BFD_RELOC_32_PCREL:
- return &elf_howto_table[(int) R_390_PC32];
- case BFD_RELOC_390_GOT12:
- return &elf_howto_table[(int) R_390_GOT12];
- case BFD_RELOC_32_GOT_PCREL:
- return &elf_howto_table[(int) R_390_GOT32];
- case BFD_RELOC_390_PLT32:
- return &elf_howto_table[(int) R_390_PLT32];
- case BFD_RELOC_390_COPY:
- return &elf_howto_table[(int) R_390_COPY];
- case BFD_RELOC_390_GLOB_DAT:
- return &elf_howto_table[(int) R_390_GLOB_DAT];
- case BFD_RELOC_390_JMP_SLOT:
- return &elf_howto_table[(int) R_390_JMP_SLOT];
- case BFD_RELOC_390_RELATIVE:
- return &elf_howto_table[(int) R_390_RELATIVE];
- case BFD_RELOC_32_GOTOFF:
- return &elf_howto_table[(int) R_390_GOTOFF];
- case BFD_RELOC_390_GOTPC:
- return &elf_howto_table[(int) R_390_GOTPC];
- case BFD_RELOC_390_GOT16:
- return &elf_howto_table[(int) R_390_GOT16];
- case BFD_RELOC_16_PCREL:
- return &elf_howto_table[(int) R_390_PC16];
- case BFD_RELOC_390_PC16DBL:
- return &elf_howto_table[(int) R_390_PC16DBL];
- case BFD_RELOC_390_PLT16DBL:
- return &elf_howto_table[(int) R_390_PLT16DBL];
- case BFD_RELOC_VTABLE_INHERIT:
- return &elf64_s390_vtinherit_howto;
- case BFD_RELOC_VTABLE_ENTRY:
- return &elf64_s390_vtentry_howto;
- case BFD_RELOC_390_PC32DBL:
- return &elf_howto_table[(int) R_390_PC32DBL];
- case BFD_RELOC_390_PLT32DBL:
- return &elf_howto_table[(int) R_390_PLT32DBL];
- case BFD_RELOC_390_GOTPCDBL:
- return &elf_howto_table[(int) R_390_GOTPCDBL];
- case BFD_RELOC_64:
- return &elf_howto_table[(int) R_390_64];
- case BFD_RELOC_64_PCREL:
- return &elf_howto_table[(int) R_390_PC64];
- case BFD_RELOC_390_GOT64:
- return &elf_howto_table[(int) R_390_GOT64];
- case BFD_RELOC_390_PLT64:
- return &elf_howto_table[(int) R_390_PLT64];
- case BFD_RELOC_390_GOTENT:
- return &elf_howto_table[(int) R_390_GOTENT];
- default:
- break;
- }
+ switch (code)
+ {
+ case BFD_RELOC_NONE:
+ return &elf_howto_table[(int) R_390_NONE];
+ case BFD_RELOC_8:
+ return &elf_howto_table[(int) R_390_8];
+ case BFD_RELOC_390_12:
+ return &elf_howto_table[(int) R_390_12];
+ case BFD_RELOC_16:
+ return &elf_howto_table[(int) R_390_16];
+ case BFD_RELOC_32:
+ return &elf_howto_table[(int) R_390_32];
+ case BFD_RELOC_CTOR:
+ return &elf_howto_table[(int) R_390_32];
+ case BFD_RELOC_32_PCREL:
+ return &elf_howto_table[(int) R_390_PC32];
+ case BFD_RELOC_390_GOT12:
+ return &elf_howto_table[(int) R_390_GOT12];
+ case BFD_RELOC_32_GOT_PCREL:
+ return &elf_howto_table[(int) R_390_GOT32];
+ case BFD_RELOC_390_PLT32:
+ return &elf_howto_table[(int) R_390_PLT32];
+ case BFD_RELOC_390_COPY:
+ return &elf_howto_table[(int) R_390_COPY];
+ case BFD_RELOC_390_GLOB_DAT:
+ return &elf_howto_table[(int) R_390_GLOB_DAT];
+ case BFD_RELOC_390_JMP_SLOT:
+ return &elf_howto_table[(int) R_390_JMP_SLOT];
+ case BFD_RELOC_390_RELATIVE:
+ return &elf_howto_table[(int) R_390_RELATIVE];
+ case BFD_RELOC_32_GOTOFF:
+ return &elf_howto_table[(int) R_390_GOTOFF32];
+ case BFD_RELOC_390_GOTPC:
+ return &elf_howto_table[(int) R_390_GOTPC];
+ case BFD_RELOC_390_GOT16:
+ return &elf_howto_table[(int) R_390_GOT16];
+ case BFD_RELOC_16_PCREL:
+ return &elf_howto_table[(int) R_390_PC16];
+ case BFD_RELOC_390_PC16DBL:
+ return &elf_howto_table[(int) R_390_PC16DBL];
+ case BFD_RELOC_390_PLT16DBL:
+ return &elf_howto_table[(int) R_390_PLT16DBL];
+ case BFD_RELOC_390_PC32DBL:
+ return &elf_howto_table[(int) R_390_PC32DBL];
+ case BFD_RELOC_390_PLT32DBL:
+ return &elf_howto_table[(int) R_390_PLT32DBL];
+ case BFD_RELOC_390_GOTPCDBL:
+ return &elf_howto_table[(int) R_390_GOTPCDBL];
+ case BFD_RELOC_64:
+ return &elf_howto_table[(int) R_390_64];
+ case BFD_RELOC_64_PCREL:
+ return &elf_howto_table[(int) R_390_PC64];
+ case BFD_RELOC_390_GOT64:
+ return &elf_howto_table[(int) R_390_GOT64];
+ case BFD_RELOC_390_PLT64:
+ return &elf_howto_table[(int) R_390_PLT64];
+ case BFD_RELOC_390_GOTENT:
+ return &elf_howto_table[(int) R_390_GOTENT];
+ case BFD_RELOC_16_GOTOFF:
+ return &elf_howto_table[(int) R_390_GOTOFF16];
+ case BFD_RELOC_390_GOTOFF64:
+ return &elf_howto_table[(int) R_390_GOTOFF64];
+ case BFD_RELOC_390_GOTPLT12:
+ return &elf_howto_table[(int) R_390_GOTPLT12];
+ case BFD_RELOC_390_GOTPLT16:
+ return &elf_howto_table[(int) R_390_GOTPLT16];
+ case BFD_RELOC_390_GOTPLT32:
+ return &elf_howto_table[(int) R_390_GOTPLT32];
+ case BFD_RELOC_390_GOTPLT64:
+ return &elf_howto_table[(int) R_390_GOTPLT64];
+ case BFD_RELOC_390_GOTPLTENT:
+ return &elf_howto_table[(int) R_390_GOTPLTENT];
+ case BFD_RELOC_390_PLTOFF16:
+ return &elf_howto_table[(int) R_390_PLTOFF16];
+ case BFD_RELOC_390_PLTOFF32:
+ return &elf_howto_table[(int) R_390_PLTOFF32];
+ case BFD_RELOC_390_PLTOFF64:
+ return &elf_howto_table[(int) R_390_PLTOFF64];
+ case BFD_RELOC_390_TLS_LOAD:
+ return &elf_howto_table[(int) R_390_TLS_LOAD];
+ case BFD_RELOC_390_TLS_GDCALL:
+ return &elf_howto_table[(int) R_390_TLS_GDCALL];
+ case BFD_RELOC_390_TLS_LDCALL:
+ return &elf_howto_table[(int) R_390_TLS_LDCALL];
+ case BFD_RELOC_390_TLS_GD64:
+ return &elf_howto_table[(int) R_390_TLS_GD64];
+ case BFD_RELOC_390_TLS_GOTIE12:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE12];
+ case BFD_RELOC_390_TLS_GOTIE64:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE64];
+ case BFD_RELOC_390_TLS_LDM64:
+ return &elf_howto_table[(int) R_390_TLS_LDM64];
+ case BFD_RELOC_390_TLS_IE64:
+ return &elf_howto_table[(int) R_390_TLS_IE64];
+ case BFD_RELOC_390_TLS_IEENT:
+ return &elf_howto_table[(int) R_390_TLS_IEENT];
+ case BFD_RELOC_390_TLS_LE64:
+ return &elf_howto_table[(int) R_390_TLS_LE64];
+ case BFD_RELOC_390_TLS_LDO64:
+ return &elf_howto_table[(int) R_390_TLS_LDO64];
+ case BFD_RELOC_390_TLS_DTPMOD:
+ return &elf_howto_table[(int) R_390_TLS_DTPMOD];
+ case BFD_RELOC_390_TLS_DTPOFF:
+ return &elf_howto_table[(int) R_390_TLS_DTPOFF];
+ case BFD_RELOC_390_TLS_TPOFF:
+ return &elf_howto_table[(int) R_390_TLS_TPOFF];
+ case BFD_RELOC_390_20:
+ return &elf_howto_table[(int) R_390_20];
+ case BFD_RELOC_390_GOT20:
+ return &elf_howto_table[(int) R_390_GOT20];
+ case BFD_RELOC_390_GOTPLT20:
+ return &elf_howto_table[(int) R_390_GOTPLT20];
+ case BFD_RELOC_390_TLS_GOTIE20:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE20];
+ case BFD_RELOC_VTABLE_INHERIT:
+ return &elf64_s390_vtinherit_howto;
+ case BFD_RELOC_VTABLE_ENTRY:
+ return &elf64_s390_vtentry_howto;
+ default:
+ break;
+ }
return 0;
}
+static reloc_howto_type *
+elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
+ i++)
+ if (elf_howto_table[i].name != NULL
+ && strcasecmp (elf_howto_table[i].name, r_name) == 0)
+ return &elf_howto_table[i];
+
+ if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
+ return &elf64_s390_vtinherit_howto;
+ if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
+ return &elf64_s390_vtentry_howto;
+
+ return NULL;
+}
+
/* We need to use ELF64_R_TYPE so we have our own copy of this function,
and elf64-s390.c has its own copy. */
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
- switch (ELF64_R_TYPE(dst->r_info))
+ unsigned int r_type = ELF64_R_TYPE(dst->r_info);
+ switch (r_type)
{
case R_390_GNU_VTINHERIT:
cache_ptr->howto = &elf64_s390_vtinherit_howto;
break;
default:
- BFD_ASSERT (ELF64_R_TYPE(dst->r_info) < (unsigned int) R_390_max);
- cache_ptr->howto = &elf_howto_table[ELF64_R_TYPE(dst->r_info)];
+ if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
+ {
+ (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
+ abfd, (int) r_type);
+ r_type = R_390_NONE;
+ }
+ cache_ptr->howto = &elf_howto_table[r_type];
+ }
+}
+
+/* A relocation function which doesn't do anything. */
+static bfd_reloc_status_type
+s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry;
+ asymbol *symbol ATTRIBUTE_UNUSED;
+ PTR data ATTRIBUTE_UNUSED;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ if (output_bfd)
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+}
+
+/* Handle the large displacement relocs. */
+static bfd_reloc_status_type
+s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ reloc_howto_type *howto = reloc_entry->howto;
+ bfd_vma relocation;
+ bfd_vma insn;
+
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+ if (output_bfd != NULL)
+ return bfd_reloc_continue;
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ relocation = (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset);
+ relocation += reloc_entry->addend;
+ if (howto->pc_relative)
+ {
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset);
+ relocation -= reloc_entry->address;
}
+
+ insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+ insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
+ bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
+
+ if ((bfd_signed_vma) relocation < - 0x80000
+ || (bfd_signed_vma) relocation > 0x7ffff)
+ return bfd_reloc_overflow;
+ else
+ return bfd_reloc_ok;
}
-static boolean
+static bfd_boolean
elf_s390_is_local_label_name (abfd, name)
bfd *abfd;
const char *name;
{
if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
- return true;
+ return TRUE;
return _bfd_elf_is_local_label_name (abfd, name);
}
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
-/* The nop opcode we use. */
-
-#define s390_NOP 0x07070707
-
+/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
+ copying dynamic variables from a shared lib into an app's dynbss
+ section, and instead use a dynamic relocation to point into the
+ shared lib. */
+#define ELIMINATE_COPY_RELOCS 1
/* The size in bytes of the first entry in the procedure linkage table. */
#define PLT_FIRST_ENTRY_SIZE 32
#define PLT_FIRST_ENTRY_WORD7 (bfd_vma) 0x07000700
/* The s390 linker needs to keep track of the number of relocs that it
- decides to copy in check_relocs for each symbol. This is so that
- it can discard PC relative relocs if it doesn't need them when
- linking with -Bsymbolic. We store the information in a field
- extending the regular ELF linker hash table. */
-
-/* This structure keeps track of the number of PC relative relocs we
- have copied for a given symbol. */
+ decides to copy as dynamic relocs in check_relocs for each symbol.
+ This is so that it can later discard them if they are found to be
+ unnecessary. We store the information in a field extending the
+ regular ELF linker hash table. */
-struct elf_s390_pcrel_relocs_copied
+struct elf_s390_dyn_relocs
{
- /* Next section. */
- struct elf_s390_pcrel_relocs_copied *next;
- /* A section in dynobj. */
- asection *section;
- /* Number of relocs copied in this section. */
+ struct elf_s390_dyn_relocs *next;
+
+ /* The input section of the reloc. */
+ asection *sec;
+
+ /* Total number of relocs copied for the input section. */
bfd_size_type count;
+
+ /* Number of pc-relative relocs copied for the input section. */
+ bfd_size_type pc_count;
};
/* s390 ELF linker hash entry. */
struct elf_s390_link_hash_entry
{
- struct elf_link_hash_entry root;
+ struct elf_link_hash_entry elf;
+
+ /* Track dynamic relocs copied for this symbol. */
+ struct elf_s390_dyn_relocs *dyn_relocs;
- /* Number of PC relative relocs copied for this symbol. */
- struct elf_s390_pcrel_relocs_copied *pcrel_relocs_copied;
+ /* Number of GOTPLT references for a function. */
+ bfd_signed_vma gotplt_refcount;
+
+#define GOT_UNKNOWN 0
+#define GOT_NORMAL 1
+#define GOT_TLS_GD 2
+#define GOT_TLS_IE 3
+#define GOT_TLS_IE_NLT 3
+ unsigned char tls_type;
};
-/* s390 ELF linker hash table. */
+#define elf_s390_hash_entry(ent) \
+ ((struct elf_s390_link_hash_entry *)(ent))
-struct elf_s390_link_hash_table
+/* NOTE: Keep this structure in sync with
+ the one declared in elf32-s390.c. */
+struct elf_s390_obj_tdata
{
- struct elf_link_hash_table root;
+ struct elf_obj_tdata root;
+
+ /* TLS type for each local got entry. */
+ char *local_got_tls_type;
};
-/* Declare this now that the above structures are defined. */
+#define elf_s390_tdata(abfd) \
+ ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
+
+#define elf_s390_local_got_tls_type(abfd) \
+ (elf_s390_tdata (abfd)->local_got_tls_type)
+
+#define is_s390_elf(bfd) \
+ (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
+ && elf_tdata (bfd) != NULL \
+ && elf_object_id (bfd) == S390_ELF_TDATA)
+
+static bfd_boolean
+elf_s390_mkobject (bfd *abfd)
+{
+ return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
+ S390_ELF_TDATA);
+}
+
+static bfd_boolean
+elf_s390_object_p (abfd)
+ bfd *abfd;
+{
+ /* Set the right machine number for an s390 elf32 file. */
+ return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
+}
+
+/* s390 ELF linker hash table. */
+
+struct elf_s390_link_hash_table
+{
+ struct elf_link_hash_table elf;
-static boolean elf_s390_discard_copies
- PARAMS ((struct elf_s390_link_hash_entry *, PTR));
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sgot;
+ asection *sgotplt;
+ asection *srelgot;
+ asection *splt;
+ asection *srelplt;
+ asection *sdynbss;
+ asection *srelbss;
-/* Traverse an s390 ELF linker hash table. */
+ union {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } tls_ldm_got;
-#define elf_s390_link_hash_traverse(table, func, info) \
- (elf_link_hash_traverse \
- (&(table)->root, \
- (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
- (info)))
+ /* Small local sym cache. */
+ struct sym_cache sym_cache;
+};
/* Get the s390 ELF linker hash table from a link_info structure. */
/* Create an entry in an s390 ELF linker hash table. */
static struct bfd_hash_entry *
-elf_s390_link_hash_newfunc (entry, table, string)
+link_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
{
- struct elf_s390_link_hash_entry *ret =
- (struct elf_s390_link_hash_entry *) entry;
-
/* Allocate the structure if it has not already been allocated by a
subclass. */
- if (ret == (struct elf_s390_link_hash_entry *) NULL)
- ret = ((struct elf_s390_link_hash_entry *)
- bfd_hash_allocate (table,
- sizeof (struct elf_s390_link_hash_entry)));
- if (ret == (struct elf_s390_link_hash_entry *) NULL)
- return (struct bfd_hash_entry *) ret;
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table,
+ sizeof (struct elf_s390_link_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
/* Call the allocation method of the superclass. */
- ret = ((struct elf_s390_link_hash_entry *)
- _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
- table, string));
- if (ret != (struct elf_s390_link_hash_entry *) NULL)
+ entry = _bfd_elf_link_hash_newfunc (entry, table, string);
+ if (entry != NULL)
{
- ret->pcrel_relocs_copied = NULL;
+ struct elf_s390_link_hash_entry *eh;
+
+ eh = (struct elf_s390_link_hash_entry *) entry;
+ eh->dyn_relocs = NULL;
+ eh->gotplt_refcount = 0;
+ eh->tls_type = GOT_UNKNOWN;
}
- return (struct bfd_hash_entry *) ret;
+ return entry;
}
/* Create an s390 ELF linker hash table. */
struct elf_s390_link_hash_table *ret;
bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
- ret = ((struct elf_s390_link_hash_table *) bfd_alloc (abfd, amt));
- if (ret == (struct elf_s390_link_hash_table *) NULL)
+ ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
+ if (ret == NULL)
return NULL;
- if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
- elf_s390_link_hash_newfunc))
+ if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
+ sizeof (struct elf_s390_link_hash_entry)))
{
- bfd_release (abfd, ret);
+ free (ret);
return NULL;
}
- return &ret->root.root;
+ ret->sgot = NULL;
+ ret->sgotplt = NULL;
+ ret->srelgot = NULL;
+ ret->splt = NULL;
+ ret->srelplt = NULL;
+ ret->sdynbss = NULL;
+ ret->srelbss = NULL;
+ ret->tls_ldm_got.refcount = 0;
+ ret->sym_cache.abfd = NULL;
+
+ return &ret->elf.root;
+}
+
+/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
+ shortcuts to them in our hash table. */
+
+static bfd_boolean
+create_got_section (dynobj, info)
+ bfd *dynobj;
+ struct bfd_link_info *info;
+{
+ struct elf_s390_link_hash_table *htab;
+
+ if (! _bfd_elf_create_got_section (dynobj, info))
+ return FALSE;
+
+ htab = elf_s390_hash_table (info);
+ htab->sgot = bfd_get_section_by_name (dynobj, ".got");
+ htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
+ htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ if (!htab->sgot || !htab->sgotplt || !htab->srelgot)
+ abort ();
+ return TRUE;
+}
+
+/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
+ .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
+ hash table. */
+
+static bfd_boolean
+elf_s390_create_dynamic_sections (dynobj, info)
+ bfd *dynobj;
+ struct bfd_link_info *info;
+{
+ struct elf_s390_link_hash_table *htab;
+
+ htab = elf_s390_hash_table (info);
+ if (!htab->sgot && !create_got_section (dynobj, info))
+ return FALSE;
+
+ if (!_bfd_elf_create_dynamic_sections (dynobj, info))
+ return FALSE;
+
+ htab->splt = bfd_get_section_by_name (dynobj, ".plt");
+ htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
+ htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
+ if (!info->shared)
+ htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
+
+ if (!htab->splt || !htab->srelplt || !htab->sdynbss
+ || (!info->shared && !htab->srelbss))
+ abort ();
+
+ return TRUE;
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+elf_s390_copy_indirect_symbol (info, dir, ind)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *dir, *ind;
+{
+ struct elf_s390_link_hash_entry *edir, *eind;
+
+ edir = (struct elf_s390_link_hash_entry *) dir;
+ eind = (struct elf_s390_link_hash_entry *) ind;
+
+ if (eind->dyn_relocs != NULL)
+ {
+ if (edir->dyn_relocs != NULL)
+ {
+ struct elf_s390_dyn_relocs **pp;
+ struct elf_s390_dyn_relocs *p;
+
+ /* Add reloc counts against the indirect sym to the direct sym
+ list. Merge any entries against the same section. */
+ for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
+ {
+ struct elf_s390_dyn_relocs *q;
+
+ for (q = edir->dyn_relocs; q != NULL; q = q->next)
+ if (q->sec == p->sec)
+ {
+ q->pc_count += p->pc_count;
+ q->count += p->count;
+ *pp = p->next;
+ break;
+ }
+ if (q == NULL)
+ pp = &p->next;
+ }
+ *pp = edir->dyn_relocs;
+ }
+
+ edir->dyn_relocs = eind->dyn_relocs;
+ eind->dyn_relocs = NULL;
+ }
+
+ if (ind->root.type == bfd_link_hash_indirect
+ && dir->got.refcount <= 0)
+ {
+ edir->tls_type = eind->tls_type;
+ eind->tls_type = GOT_UNKNOWN;
+ }
+
+ if (ELIMINATE_COPY_RELOCS
+ && ind->root.type != bfd_link_hash_indirect
+ && dir->dynamic_adjusted)
+ {
+ /* If called to transfer flags for a weakdef during processing
+ of elf_adjust_dynamic_symbol, don't copy non_got_ref.
+ We clear it ourselves for ELIMINATE_COPY_RELOCS. */
+ dir->ref_dynamic |= ind->ref_dynamic;
+ dir->ref_regular |= ind->ref_regular;
+ dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
+ dir->needs_plt |= ind->needs_plt;
+ }
+ else
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
}
+static int
+elf_s390_tls_transition (info, r_type, is_local)
+ struct bfd_link_info *info;
+ int r_type;
+ int is_local;
+{
+ if (info->shared)
+ return r_type;
+
+ switch (r_type)
+ {
+ case R_390_TLS_GD64:
+ case R_390_TLS_IE64:
+ if (is_local)
+ return R_390_TLS_LE64;
+ return R_390_TLS_IE64;
+ case R_390_TLS_GOTIE64:
+ if (is_local)
+ return R_390_TLS_LE64;
+ return R_390_TLS_GOTIE64;
+ case R_390_TLS_LDM64:
+ return R_390_TLS_LE64;
+ }
+
+ return r_type;
+}
/* Look through the relocs for a section during the first phase, and
allocate space in the global offset table or procedure linkage
table. */
-static boolean
+static bfd_boolean
elf_s390_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *relocs;
{
- bfd *dynobj;
+ struct elf_s390_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
- bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
- asection *sgot;
- asection *srelgot;
asection *sreloc;
+ bfd_signed_vma *local_got_refcounts;
+ int tls_type, old_tls_type;
+
+ if (info->relocatable)
+ return TRUE;
- if (info->relocateable)
- return true;
+ BFD_ASSERT (is_s390_elf (abfd));
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ htab = elf_s390_hash_table (info);
+ symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_offsets (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
- sgot = NULL;
- srelgot = NULL;
sreloc = NULL;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
+ unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
+ {
+ (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
+ abfd,
+ r_symndx);
+ return FALSE;
+ }
+
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-
- /* Some relocs require a global offset table. */
- if (dynobj == NULL)
{
- switch (ELF64_R_TYPE (rel->r_info))
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTOFF:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- case R_390_GOTENT:
- elf_hash_table (info)->dynobj = dynobj = abfd;
- if (! _bfd_elf_create_got_section (dynobj, info))
- return false;
- break;
-
- default:
- break;
- }
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
-
- switch (ELF64_R_TYPE (rel->r_info))
+ /* Create got section and local_got_refcounts array if they
+ are needed. */
+ r_type = elf_s390_tls_transition (info,
+ ELF64_R_TYPE (rel->r_info),
+ h == NULL);
+ switch (r_type)
{
case R_390_GOT12:
- case R_390_GOT16:
+ case R_390_GOT16:
+ case R_390_GOT20:
case R_390_GOT32:
case R_390_GOT64:
case R_390_GOTENT:
- /* This symbol requires a global offset table entry. */
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ case R_390_TLS_GD64:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE64:
+ case R_390_TLS_IEENT:
+ case R_390_TLS_IE64:
+ case R_390_TLS_LDM64:
+ if (h == NULL
+ && local_got_refcounts == NULL)
+ {
+ bfd_size_type size;
- if (sgot == NULL)
+ size = symtab_hdr->sh_info;
+ size *= (sizeof (bfd_signed_vma) + sizeof(char));
+ local_got_refcounts = ((bfd_signed_vma *)
+ bfd_zalloc (abfd, size));
+ if (local_got_refcounts == NULL)
+ return FALSE;
+ elf_local_got_refcounts (abfd) = local_got_refcounts;
+ elf_s390_local_got_tls_type (abfd)
+ = (char *) (local_got_refcounts + symtab_hdr->sh_info);
+ }
+ /* Fall through. */
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ if (htab->sgot == NULL)
{
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ if (!create_got_section (htab->elf.dynobj, info))
+ return FALSE;
}
+ }
+
+ switch (r_type)
+ {
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ /* Got is created, nothing to be done. */
+ break;
+ case R_390_PLT16DBL:
+ case R_390_PLT32:
+ case R_390_PLT32DBL:
+ case R_390_PLT64:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ case R_390_PLTOFF64:
+ /* This symbol requires a procedure linkage table entry. We
+ actually build the entry in adjust_dynamic_symbol,
+ because this might be a case of linking PIC code which is
+ never referenced by a dynamic object, in which case we
+ don't need to generate a procedure linkage table entry
+ after all. */
- if (srelgot == NULL
- && (h != NULL || info->shared))
+ /* If this is a local symbol, we resolve it directly without
+ creating a procedure linkage table entry. */
+ if (h != NULL)
{
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- {
- srelgot = bfd_make_section (dynobj, ".rela.got");
- if (srelgot == NULL
- || ! bfd_set_section_flags (dynobj, srelgot,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, srelgot, 2))
- return false;
- }
+ h->needs_plt = 1;
+ h->plt.refcount += 1;
}
+ break;
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ /* This symbol requires either a procedure linkage table entry
+ or an entry in the local got. We actually build the entry
+ in adjust_dynamic_symbol because whether this is really a
+ global reference can change and with it the fact if we have
+ to create a plt entry or a local got entry. To be able to
+ make a once global symbol a local one we have to keep track
+ of the number of gotplt references that exist for this
+ symbol. */
if (h != NULL)
{
- if (h->got.refcount == -1)
- {
- h->got.refcount = 1;
+ ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
+ h->needs_plt = 1;
+ h->plt.refcount += 1;
+ }
+ else
+ local_got_refcounts[r_symndx] += 1;
+ break;
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
- return false;
- }
+ case R_390_TLS_LDM64:
+ htab->tls_ldm_got.refcount += 1;
+ break;
- sgot->_raw_size += 8;
- srelgot->_raw_size += sizeof (Elf64_External_Rela);
- }
- else
- h->got.refcount += 1;
+ case R_390_TLS_IE64:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE64:
+ case R_390_TLS_IEENT:
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ /* Fall through */
+
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOT64:
+ case R_390_GOTENT:
+ case R_390_TLS_GD64:
+ /* This symbol requires a global offset table entry. */
+ switch (r_type)
+ {
+ default:
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOTENT:
+ tls_type = GOT_NORMAL;
+ break;
+ case R_390_TLS_GD64:
+ tls_type = GOT_TLS_GD;
+ break;
+ case R_390_TLS_IE64:
+ case R_390_TLS_GOTIE64:
+ tls_type = GOT_TLS_IE;
+ break;
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_IEENT:
+ tls_type = GOT_TLS_IE_NLT;
+ break;
+ }
+
+ if (h != NULL)
+ {
+ h->got.refcount += 1;
+ old_tls_type = elf_s390_hash_entry(h)->tls_type;
}
else
{
- /* This is a global offset table entry for a local symbol. */
- if (local_got_refcounts == NULL)
+ local_got_refcounts[r_symndx] += 1;
+ old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
+ }
+ /* If a TLS symbol is accessed using IE at least once,
+ there is no point to use dynamic model for it. */
+ if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
+ {
+ if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
{
- bfd_size_type size;
-
- size = symtab_hdr->sh_info * sizeof (bfd_vma);
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_alloc (abfd, size));
- if (local_got_refcounts == NULL)
- return false;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- memset (local_got_refcounts, -1, (size_t) size);
+ (*_bfd_error_handler)
+ (_("%B: `%s' accessed both as normal and thread local symbol"),
+ abfd, h->root.root.string);
+ return FALSE;
}
- if (local_got_refcounts[r_symndx] == -1)
- {
- local_got_refcounts[r_symndx] = 1;
+ if (old_tls_type > tls_type)
+ tls_type = old_tls_type;
+ }
- sgot->_raw_size += 8;
- if (info->shared)
- {
- /* If we are generating a shared object, we need to
- output a R_390_RELATIVE reloc so that the dynamic
- linker can adjust this GOT entry. */
- srelgot->_raw_size += sizeof (Elf64_External_Rela);
- }
- }
+ if (old_tls_type != tls_type)
+ {
+ if (h != NULL)
+ elf_s390_hash_entry (h)->tls_type = tls_type;
else
- local_got_refcounts[r_symndx] += 1;
-
+ elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
- break;
-
- case R_390_PLT16DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code which is
- never referenced by a dynamic object, in which case we
- don't need to generate a procedure linkage table entry
- after all. */
- /* If this is a local symbol, we resolve it directly without
- creating a procedure linkage table entry. */
- if (h == NULL)
- continue;
+ if (r_type != R_390_TLS_IE64)
+ break;
+ /* Fall through */
- if (h->plt.refcount == -1)
- {
- h->plt.refcount = 1;
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- }
- else
- h->plt.refcount += 1;
- break;
+ case R_390_TLS_LE64:
+ if (!info->shared)
+ break;
+ info->flags |= DF_STATIC_TLS;
+ /* Fall through */
- case R_390_8:
- case R_390_16:
+ case R_390_8:
+ case R_390_16:
case R_390_32:
case R_390_64:
- case R_390_PC16:
- case R_390_PC16DBL:
+ case R_390_PC16:
+ case R_390_PC16DBL:
case R_390_PC32:
case R_390_PC32DBL:
case R_390_PC64:
- if (h != NULL)
- h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+ if (h != NULL && !info->shared)
+ {
+ /* If this reloc is in a read-only section, we might
+ need a copy reloc. We can't check reliably at this
+ stage whether the section is read-only, as input
+ sections have not yet been mapped to output sections.
+ Tentatively set the flag for now, and correct in
+ adjust_dynamic_symbol. */
+ h->non_got_ref = 1;
+
+ /* We may need a .plt entry if the function this reloc
+ refers to is in a shared lib. */
+ h->plt.refcount += 1;
+ }
/* If we are creating a shared library, and this is a reloc
- against a global symbol, or a non PC relative reloc
- against a local symbol, then we need to copy the reloc
- into the shared library. However, if we are linking with
- -Bsymbolic, we do not need to copy a reloc against a
- global symbol which is defined in an object we are
- including in the link (i.e., DEF_REGULAR is set). At
- this point we have not seen all the input files, so it is
- possible that DEF_REGULAR is not set now but will be set
- later (it is never cleared). We account for that
- possibility below by storing information in the
- pcrel_relocs_copied field of the hash table entry. */
- if (info->shared
- && (sec->flags & SEC_ALLOC) != 0
- && (ELF64_R_TYPE (rel->r_info) == R_390_8
- || ELF64_R_TYPE (rel->r_info) == R_390_16
- || ELF64_R_TYPE (rel->r_info) == R_390_32
- || ELF64_R_TYPE (rel->r_info) == R_390_64
- || (h != NULL
- && h->dynindx != -1
- && (! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))))
+ against a global symbol, or a non PC relative reloc
+ against a local symbol, then we need to copy the reloc
+ into the shared library. However, if we are linking with
+ -Bsymbolic, we do not need to copy a reloc against a
+ global symbol which is defined in an object we are
+ including in the link (i.e., DEF_REGULAR is set). At
+ this point we have not seen all the input files, so it is
+ possible that DEF_REGULAR is not set now but will be set
+ later (it is never cleared). In case of a weak definition,
+ DEF_REGULAR may be cleared later by a strong definition in
+ a shared library. We account for that possibility below by
+ storing information in the relocs_copied field of the hash
+ table entry. A similar situation occurs when creating
+ shared libraries and symbol visibility changes render the
+ symbol local.
+
+ If on the other hand, we are creating an executable, we
+ may need to keep relocations for symbols satisfied by a
+ dynamic library if we manage to avoid copy relocs for the
+ symbol. */
+ if ((info->shared
+ && (sec->flags & SEC_ALLOC) != 0
+ && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
+ && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
+ && ELF64_R_TYPE (rel->r_info) != R_390_PC32
+ && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
+ && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
+ || (h != NULL
+ && (! SYMBOLIC_BIND (info, h)
+ || h->root.type == bfd_link_hash_defweak
+ || !h->def_regular))))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && (sec->flags & SEC_ALLOC) != 0
+ && h != NULL
+ && (h->root.type == bfd_link_hash_defweak
+ || !h->def_regular)))
{
- /* When creating a shared object, we must copy these
- reloc types into the output file. We create a reloc
- section in dynobj and make room for this reloc. */
+ struct elf_s390_dyn_relocs *p;
+ struct elf_s390_dyn_relocs **head;
+
+ /* We must copy these reloc types into the output file.
+ Create a reloc section in dynobj and make room for
+ this reloc. */
if (sreloc == NULL)
{
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return false;
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (abfd, sec),
- name + 5) == 0);
+ sreloc = _bfd_elf_make_dynamic_reloc_section
+ (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
- sreloc = bfd_get_section_by_name (dynobj, name);
if (sreloc == NULL)
- {
- flagword flags;
-
- sreloc = bfd_make_section (dynobj, name);
- flags = (SEC_HAS_CONTENTS | SEC_READONLY
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- if ((sec->flags & SEC_ALLOC) != 0)
- flags |= SEC_ALLOC | SEC_LOAD;
- if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc, flags)
- || ! bfd_set_section_alignment (dynobj, sreloc, 2))
- return false;
- }
- if (sec->flags & SEC_READONLY)
- info->flags |= DF_TEXTREL;
+ return FALSE;
}
- sreloc->_raw_size += sizeof (Elf64_External_Rela);
-
- /* If we are linking with -Bsymbolic, and this is a
- global symbol, we count the number of PC relative
- relocations we have entered for this symbol, so that
- we can discard them again if the symbol is later
- defined by a regular object. Note that this function
- is only called if we are using an elf64_s390 linker
- hash table, which means that h is really a pointer to
- an elf64_s390_link_hash_entry. */
- if (h != NULL
- && (ELF64_R_TYPE (rel->r_info) == R_390_PC16 ||
- ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL ||
- ELF64_R_TYPE (rel->r_info) == R_390_PC32 ||
- ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL ||
- ELF64_R_TYPE (rel->r_info) == R_390_PC64))
+ /* If this is a global symbol, we count the number of
+ relocations we need for this symbol. */
+ if (h != NULL)
{
- struct elf_s390_link_hash_entry *eh;
- struct elf_s390_pcrel_relocs_copied *p;
-
- eh = (struct elf_s390_link_hash_entry *) h;
-
- for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
- if (p->section == sreloc)
- break;
+ head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
+ }
+ else
+ {
+ /* Track dynamic relocs needed for local syms too.
+ We really need local syms available to do this
+ easily. Oh well. */
+ asection *s;
+ void *vpp;
+ Elf_Internal_Sym *isym;
+
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+ if (isym == NULL)
+ return FALSE;
+
+ s = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ if (s == NULL)
+ s = sec;
+
+ vpp = &elf_section_data (s)->local_dynrel;
+ head = (struct elf_s390_dyn_relocs **) vpp;
+ }
+ p = *head;
+ if (p == NULL || p->sec != sec)
+ {
+ bfd_size_type amt = sizeof *p;
+ p = ((struct elf_s390_dyn_relocs *)
+ bfd_alloc (htab->elf.dynobj, amt));
if (p == NULL)
- {
- p = ((struct elf_s390_pcrel_relocs_copied *)
- bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
- if (p == NULL)
- return false;
- p->next = eh->pcrel_relocs_copied;
- eh->pcrel_relocs_copied = p;
- p->section = sreloc;
- p->count = 0;
- }
-
- ++p->count;
+ return FALSE;
+ p->next = *head;
+ *head = p;
+ p->sec = sec;
+ p->count = 0;
+ p->pc_count = 0;
}
- }
+ p->count += 1;
+ if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC32
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
+ p->pc_count += 1;
+ }
break;
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
- case R_390_GNU_VTINHERIT:
- if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return false;
- break;
+ case R_390_GNU_VTINHERIT:
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
- case R_390_GNU_VTENTRY:
- if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
- break;
+ case R_390_GNU_VTENTRY:
+ BFD_ASSERT (h != NULL);
+ if (h != NULL
+ && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
default:
break;
}
}
- return true;
+ return TRUE;
}
/* Return the section that should be marked against GC for a given
relocation. */
static asection *
-elf_s390_gc_mark_hook (abfd, info, rel, h, sym)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- Elf_Internal_Rela *rel;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
+elf_s390_gc_mark_hook (asection *sec,
+ struct bfd_link_info *info,
+ Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
if (h != NULL)
- {
- switch (ELF64_R_TYPE (rel->r_info))
- {
- case R_390_GNU_VTINHERIT:
- case R_390_GNU_VTENTRY:
- break;
-
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
-
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
-
- default:
- break;
- }
- }
- }
- else
- {
- if (!(elf_bad_symtab (abfd)
- && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
- && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
- && sym->st_shndx != SHN_COMMON))
- {
- return bfd_section_from_elf_index (abfd, sym->st_shndx);
- }
- }
+ switch (ELF64_R_TYPE (rel->r_info))
+ {
+ case R_390_GNU_VTINHERIT:
+ case R_390_GNU_VTENTRY:
+ return NULL;
+ }
- return NULL;
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
/* Update the got entry reference counts for the section being removed. */
-static boolean
-elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
- bfd *abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- asection *sec ATTRIBUTE_UNUSED;
- const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
+static bfd_boolean
+elf_s390_gc_sweep_hook (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- bfd *dynobj;
- asection *sgot;
- asection *srelgot;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
+ if (info->relocatable)
+ return TRUE;
- dynobj = elf_hash_table (info)->dynobj;
- if (dynobj == NULL)
- return true;
+ elf_section_data (sec)->local_dynrel = NULL;
- sgot = bfd_get_section_by_name (dynobj, ".got");
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ symtab_hdr = &elf_symtab_hdr (abfd);
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
- switch (ELF64_R_TYPE (rel->r_info))
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTOFF:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- case R_390_GOTENT:
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->got.refcount > 0)
+ {
+ unsigned long r_symndx;
+ unsigned int r_type;
+ struct elf_link_hash_entry *h = NULL;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_s390_dyn_relocs **pp;
+ struct elf_s390_dyn_relocs *p;
+
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ eh = (struct elf_s390_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
{
- h->got.refcount -= 1;
- if (h->got.refcount == 0)
- {
- sgot->_raw_size -= 8;
- srelgot->_raw_size -= sizeof (Elf64_External_Rela);
- }
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
}
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- {
+ }
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ r_type = elf_s390_tls_transition (info, r_type, h != NULL);
+ switch (r_type)
+ {
+ case R_390_TLS_LDM64:
+ if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
+ elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
+ break;
+
+ case R_390_TLS_GD64:
+ case R_390_TLS_IE64:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE64:
+ case R_390_TLS_IEENT:
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOT64:
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ case R_390_GOTENT:
+ if (h != NULL)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
local_got_refcounts[r_symndx] -= 1;
- if (local_got_refcounts[r_symndx] == 0)
- {
- sgot->_raw_size -= 8;
- if (info->shared)
- srelgot->_raw_size -= sizeof (Elf64_External_Rela);
- }
- }
- }
- break;
-
- case R_390_PLT16DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->plt.refcount > 0)
- h->plt.refcount -= 1;
- }
- break;
-
- default:
- break;
- }
+ }
+ break;
+
+ case R_390_8:
+ case R_390_12:
+ case R_390_16:
+ case R_390_20:
+ case R_390_32:
+ case R_390_64:
+ case R_390_PC16:
+ case R_390_PC16DBL:
+ case R_390_PC32:
+ case R_390_PC32DBL:
+ case R_390_PC64:
+ if (info->shared)
+ break;
+ /* Fall through */
- return true;
+ case R_390_PLT16DBL:
+ case R_390_PLT32:
+ case R_390_PLT32DBL:
+ case R_390_PLT64:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ case R_390_PLTOFF64:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ break;
+
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
+ {
+ ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
+ h->plt.refcount -= 1;
+ }
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
+ entry but we found we will not create any. Called when we find we will
+ not have any PLT for this symbol, by for example
+ elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
+ or elf_s390_size_dynamic_sections if no dynamic sections will be
+ created (we're only linking static objects). */
+
+static void
+elf_s390_adjust_gotplt (h)
+ struct elf_s390_link_hash_entry *h;
+{
+ if (h->elf.root.type == bfd_link_hash_warning)
+ h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
+
+ if (h->gotplt_refcount <= 0)
+ return;
+
+ /* We simply add the number of gotplt references to the number
+ * of got references for this symbol. */
+ h->elf.got.refcount += h->gotplt_refcount;
+ h->gotplt_refcount = -1;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
change the definition to something the rest of the link can
understand. */
-static boolean
+static bfd_boolean
elf_s390_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
{
- bfd *dynobj;
+ struct elf_s390_link_hash_table *htab;
asection *s;
- unsigned int power_of_two;
-
- dynobj = elf_hash_table (info)->dynobj;
-
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
/* If this is a function, put it in the procedure linkage table. We
will fill in the contents of the procedure linkage table later
- (although we could actually do it here). */
+ (although we could actually do it here). */
if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ || h->needs_plt)
{
- if ((! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
- || (info->shared && h->plt.refcount <= 0))
+ if (h->plt.refcount <= 0
+ || SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))
{
/* This case can occur if we saw a PLT32 reloc in an input
- file, but the symbol was never referred to by a dynamic
- object. In such a case, we don't actually need to build
- a procedure linkage table, and we can just do a PC32
- reloc instead. */
+ file, but the symbol was never referred to by a dynamic
+ object, or if all references were garbage collected. In
+ such a case, we don't actually need to build a procedure
+ linkage table, and we can just do a PC32 reloc instead. */
h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
- return true;
- }
-
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
- return false;
+ h->needs_plt = 0;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
- s = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (s != NULL);
-
-
- /* The first entry in .plt is reserved. */
- if (s->_raw_size == 0)
- s->_raw_size = PLT_FIRST_ENTRY_SIZE;
-
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
- }
-
- h->plt.offset = s->_raw_size;
-
- /* Make room for this entry. */
- s->_raw_size += PLT_ENTRY_SIZE;
-
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
- s = bfd_get_section_by_name (dynobj, ".got.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += GOT_ENTRY_SIZE;
-
- /* We also need to make an entry in the .rela.plt section. */
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += sizeof (Elf64_External_Rela);
-
- return true;
+ return TRUE;
}
+ else
+ /* It's possible that we incorrectly decided a .plt reloc was
+ needed for an R_390_PC32 reloc to a non-function sym in
+ check_relocs. We can't decide accurately between function and
+ non-function syms in check-relocs; Objects loaded later in
+ the link may change h->type. So fix it now. */
+ h->plt.offset = (bfd_vma) -1;
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
- if (h->weakdef != NULL)
+ if (h->u.weakdef != NULL)
{
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->root.u.def.value;
- return true;
+ BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+ || h->u.weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->u.weakdef->root.u.def.section;
+ h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ h->non_got_ref = h->u.weakdef->non_got_ref;
+ return TRUE;
}
/* This is a reference to a symbol defined by a dynamic object which
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
if (info->shared)
- return true;
+ return TRUE;
/* If there are no references to this symbol that do not use the
GOT, we don't need to generate a copy reloc. */
- if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
- return true;
+ if (!h->non_got_ref)
+ return TRUE;
+
+ /* If -z nocopyreloc was given, we won't generate them either. */
+ if (info->nocopyreloc)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+
+ if (ELIMINATE_COPY_RELOCS)
+ {
+ struct elf_s390_link_hash_entry * eh;
+ struct elf_s390_dyn_relocs *p;
+
+ eh = (struct elf_s390_link_hash_entry *) h;
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ s = p->sec->output_section;
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ break;
+ }
+
+ /* If we didn't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ if (p == NULL)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+ }
+
+ if (h->size == 0)
+ {
+ (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
+ h->root.root.string);
+ return TRUE;
+ }
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
both the dynamic object and the regular object will refer to the
same memory location for the variable. */
- s = bfd_get_section_by_name (dynobj, ".dynbss");
- BFD_ASSERT (s != NULL);
+ htab = elf_s390_hash_table (info);
- /* We must generate a R_390_COPY reloc to tell the dynamic linker
- to copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rel.bss section we are going to use. */
+ /* We must generate a R_390_COPY reloc to tell the dynamic linker to
+ copy the initial value out of the dynamic object and into the
+ runtime process image. */
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
- asection *srel;
+ htab->srelbss->size += sizeof (Elf64_External_Rela);
+ h->needs_copy = 1;
+ }
+
+ s = htab->sdynbss;
+
+ return _bfd_elf_adjust_dynamic_copy (h, s);
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ dynamic relocs. */
+
+static bfd_boolean
+allocate_dynrelocs (h, inf)
+ struct elf_link_hash_entry *h;
+ PTR inf;
+{
+ struct bfd_link_info *info;
+ struct elf_s390_link_hash_table *htab;
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_s390_dyn_relocs *p;
+
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (h->root.type == bfd_link_hash_warning)
+ /* When warning symbols are created, they **replace** the "real"
+ entry in the hash table, thus we never get to see the real
+ symbol in a hash traversal. So look at it now. */
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ info = (struct bfd_link_info *) inf;
+ htab = elf_s390_hash_table (info);
+
+ if (htab->elf.dynamic_sections_created
+ && h->plt.refcount > 0)
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+
+ if (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
+ {
+ asection *s = htab->splt;
+
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->size == 0)
+ s->size += PLT_FIRST_ENTRY_SIZE;
+
+ h->plt.offset = s->size;
+
+ /* If this symbol is not defined in a regular file, and we are
+ not generating a shared library, then set the symbol to this
+ location in the .plt. This is required to make function
+ pointers compare as equal between the normal executable and
+ the shared library. */
+ if (! info->shared
+ && !h->def_regular)
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
+ }
+
+ /* Make room for this entry. */
+ s->size += PLT_ENTRY_SIZE;
+
+ /* We also need to make an entry in the .got.plt section, which
+ will be placed in the .got section by the linker script. */
+ htab->sgotplt->size += GOT_ENTRY_SIZE;
+
+ /* We also need to make an entry in the .rela.plt section. */
+ htab->srelplt->size += sizeof (Elf64_External_Rela);
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
+ }
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
+ }
+
+ /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
+ the binary, we can optimize a bit. IE64 and GOTIE64 get converted
+ to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
+ we can save the dynamic TLS relocation. */
+ if (h->got.refcount > 0
+ && !info->shared
+ && h->dynindx == -1
+ && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
+ {
+ if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
+ /* For the GOTIE access without a literal pool entry the offset has
+ to be stored somewhere. The immediate value in the instruction
+ is not bit enough so the value is stored in the got. */
+ {
+ h->got.offset = htab->sgot->size;
+ htab->sgot->size += GOT_ENTRY_SIZE;
+ }
+ else
+ h->got.offset = (bfd_vma) -1;
+ }
+ else if (h->got.refcount > 0)
+ {
+ asection *s;
+ bfd_boolean dyn;
+ int tls_type = elf_s390_hash_entry(h)->tls_type;
+
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
- BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf64_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ s = htab->sgot;
+ h->got.offset = s->size;
+ s->size += GOT_ENTRY_SIZE;
+ /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
+ if (tls_type == GOT_TLS_GD)
+ s->size += GOT_ENTRY_SIZE;
+ dyn = htab->elf.dynamic_sections_created;
+ /* R_390_TLS_IE64 needs one dynamic relocation,
+ R_390_TLS_GD64 needs one if local symbol and two if global. */
+ if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
+ || tls_type >= GOT_TLS_IE)
+ htab->srelgot->size += sizeof (Elf64_External_Rela);
+ else if (tls_type == GOT_TLS_GD)
+ htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
+ else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
+ htab->srelgot->size += sizeof (Elf64_External_Rela);
}
+ else
+ h->got.offset = (bfd_vma) -1;
+
+ eh = (struct elf_s390_link_hash_entry *) h;
+ if (eh->dyn_relocs == NULL)
+ return TRUE;
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 3)
- power_of_two = 3;
+ /* In the shared -Bsymbolic case, discard space allocated for
+ dynamic pc-relative relocs against symbols which turn out to be
+ defined in regular objects. For the normal shared case, discard
+ space for pc-relative relocs that have become local due to symbol
+ visibility changes. */
- /* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
+ if (info->shared)
{
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return false;
+ if (SYMBOL_CALLS_LOCAL (info, h))
+ {
+ struct elf_s390_dyn_relocs **pp;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ {
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+ }
+
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (eh->dyn_relocs != NULL
+ && h->root.type == bfd_link_hash_undefweak)
+ {
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ eh->dyn_relocs = NULL;
+
+ /* Make sure undefined weak symbols are output as a dynamic
+ symbol in PIEs. */
+ else if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+ }
}
+ else if (ELIMINATE_COPY_RELOCS)
+ {
+ /* For the non-shared case, discard space for relocs against
+ symbols which turn out to need copy relocs or are not
+ dynamic. */
+
+ if (!h->non_got_ref
+ && ((h->def_dynamic
+ && !h->def_regular)
+ || (htab->elf.dynamic_sections_created
+ && (h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_undefined))))
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
+ /* If that succeeded, we know we'll be keeping all the
+ relocs. */
+ if (h->dynindx != -1)
+ goto keep;
+ }
+
+ eh->dyn_relocs = NULL;
- /* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
+ keep: ;
+ }
- return true;
+ /* Finally, allocate space. */
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *sreloc = elf_section_data (p->sec)->sreloc;
+ sreloc->size += p->count * sizeof (Elf64_External_Rela);
+ }
+
+ return TRUE;
+}
+
+/* Find any dynamic relocs that apply to read-only sections. */
+
+static bfd_boolean
+readonly_dynrelocs (h, inf)
+ struct elf_link_hash_entry *h;
+ PTR inf;
+{
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_s390_dyn_relocs *p;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ eh = (struct elf_s390_link_hash_entry *) h;
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *s = p->sec->output_section;
+
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ {
+ struct bfd_link_info *info = (struct bfd_link_info *) inf;
+
+ info->flags |= DF_TEXTREL;
+
+ /* Not an error, just cut short the traversal. */
+ return FALSE;
+ }
+ }
+ return TRUE;
}
/* Set the sizes of the dynamic sections. */
-static boolean
+static bfd_boolean
elf_s390_size_dynamic_sections (output_bfd, info)
bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
{
+ struct elf_s390_link_hash_table *htab;
bfd *dynobj;
asection *s;
- boolean relocs;
- boolean plt;
+ bfd_boolean relocs;
+ bfd *ibfd;
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
+ htab = elf_s390_hash_table (info);
+ dynobj = htab->elf.dynobj;
+ if (dynobj == NULL)
+ abort ();
- if (elf_hash_table (info)->dynamic_sections_created)
+ if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
+ if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ if (s == NULL)
+ abort ();
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
- else
- {
- /* We may have created entries in the .rela.got section.
- However, if we are not creating the dynamic sections, we will
- not actually use these entries. Reset the size of .rela.got,
- which will cause it to get stripped from the output file
- below. */
- s = bfd_get_section_by_name (dynobj, ".rela.got");
- if (s != NULL)
- s->_raw_size = 0;
- }
- /* If this is a -Bsymbolic shared link, then we need to discard all
- PC relative relocs against symbols defined in a regular object.
- We allocated space for them in the check_relocs routine, but we
- will not fill them in in the relocate_section routine. */
- if (info->shared)
- elf_s390_link_hash_traverse (elf_s390_hash_table (info),
- elf_s390_discard_copies,
- (PTR) info);
-
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- plt = false;
- relocs = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
+ /* Set up .got offsets for local syms, and space for local dynamic
+ relocs. */
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
- const char *name;
- boolean strip;
+ bfd_signed_vma *local_got;
+ bfd_signed_vma *end_local_got;
+ char *local_tls_type;
+ bfd_size_type locsymcount;
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *srela;
- if ((s->flags & SEC_LINKER_CREATED) == 0)
+ if (! is_s390_elf (ibfd))
continue;
- /* It's OK to base decisions on the section name, because none
- of the dynobj section names depend upon the input files. */
- name = bfd_get_section_name (dynobj, s);
-
- strip = false;
-
- if (strcmp (name, ".plt") == 0)
+ for (s = ibfd->sections; s != NULL; s = s->next)
{
- if (s->_raw_size == 0)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- strip = true;
- }
- else
+ struct elf_s390_dyn_relocs *p;
+
+ for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
{
- /* Remember whether there is a PLT. */
- plt = true;
+ if (!bfd_is_abs_section (p->sec)
+ && bfd_is_abs_section (p->sec->output_section))
+ {
+ /* Input section has been discarded, either because
+ it is a copy of a linkonce section or due to
+ linker script /DISCARD/, so we'll be discarding
+ the relocs too. */
+ }
+ else if (p->count != 0)
+ {
+ srela = elf_section_data (p->sec)->sreloc;
+ srela->size += p->count * sizeof (Elf64_External_Rela);
+ if ((p->sec->output_section->flags & SEC_READONLY) != 0)
+ info->flags |= DF_TEXTREL;
+ }
}
}
- else if (strncmp (name, ".rela", 5) == 0)
+
+ local_got = elf_local_got_refcounts (ibfd);
+ if (!local_got)
+ continue;
+
+ symtab_hdr = &elf_symtab_hdr (ibfd);
+ locsymcount = symtab_hdr->sh_info;
+ end_local_got = local_got + locsymcount;
+ local_tls_type = elf_s390_local_got_tls_type (ibfd);
+ s = htab->sgot;
+ srela = htab->srelgot;
+ for (; local_got < end_local_got; ++local_got, ++local_tls_type)
{
- if (s->_raw_size == 0)
+ if (*local_got > 0)
{
- /* If we don't need this section, strip it from the
- output file. This is to handle .rela.bss and
- .rel.plt. We must create it in
- create_dynamic_sections, because it must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- strip = true;
+ *local_got = s->size;
+ s->size += GOT_ENTRY_SIZE;
+ if (*local_tls_type == GOT_TLS_GD)
+ s->size += GOT_ENTRY_SIZE;
+ if (info->shared)
+ srela->size += sizeof (Elf64_External_Rela);
}
else
- {
- /* Remember whether there are any reloc sections other
- than .rela.plt. */
- if (strcmp (name, ".rela.plt") != 0)
- relocs = true;
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
+ *local_got = (bfd_vma) -1;
+ }
+ }
+
+ if (htab->tls_ldm_got.refcount > 0)
+ {
+ /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
+ relocs. */
+ htab->tls_ldm_got.offset = htab->sgot->size;
+ htab->sgot->size += 2 * GOT_ENTRY_SIZE;
+ htab->srelgot->size += sizeof (Elf64_External_Rela);
+ }
+ else
+ htab->tls_ldm_got.offset = -1;
+
+ /* Allocate global sym .plt and .got entries, and space for global
+ sym dynamic relocs. */
+ elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
+
+ /* We now have determined the sizes of the various dynamic sections.
+ Allocate memory for them. */
+ relocs = FALSE;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ if (s == htab->splt
+ || s == htab->sgot
+ || s == htab->sgotplt
+ || s == htab->sdynbss)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
}
- else if (strncmp (name, ".got", 4) != 0)
+ else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
+ {
+ if (s->size != 0 && s != htab->srelplt)
+ relocs = TRUE;
+
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ s->reloc_count = 0;
+ }
+ else
{
/* It's not one of our sections, so don't allocate space. */
continue;
}
- if (strip)
+ if (s->size == 0)
{
- _bfd_strip_section_from_output (info, s);
+ /* If we don't need this section, strip it from the
+ output file. This is to handle .rela.bss and
+ .rela.plt. We must create it in
+ create_dynamic_sections, because it must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+
+ s->flags |= SEC_EXCLUDE;
continue;
}
- /* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
- if (s->contents == NULL && s->_raw_size != 0)
- return false;
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
+ /* Allocate memory for the section contents. We use bfd_zalloc
+ here in case unused entries are not reclaimed before the
+ section's contents are written out. This should not happen,
+ but this way if it does, we get a R_390_NONE reloc instead
+ of garbage. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL)
+ return FALSE;
}
- if (elf_hash_table (info)->dynamic_sections_created)
+ if (htab->elf.dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
values later, in elf_s390_finish_dynamic_sections, but we
the .dynamic section. The DT_DEBUG entry is filled in by the
dynamic linker and used by the debugger. */
#define add_dynamic_entry(TAG, VAL) \
- bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
+
+ if (info->executable)
+ {
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
+ }
+
+ if (htab->splt->size != 0)
+ {
+ if (!add_dynamic_entry (DT_PLTGOT, 0)
+ || !add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_RELA)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return FALSE;
+ }
+
+ if (relocs)
+ {
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
+ return FALSE;
+
+ /* If any dynamic relocs apply to a read-only section,
+ then we need a DT_TEXTREL entry. */
+ if ((info->flags & DF_TEXTREL) == 0)
+ elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
+ (PTR) info);
+
+ if ((info->flags & DF_TEXTREL) != 0)
+ {
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
+ }
+ }
+ }
+#undef add_dynamic_entry
+
+ return TRUE;
+}
+
+/* Return the base VMA address which should be subtracted from real addresses
+ when resolving @dtpoff relocation.
+ This is PT_TLS segment p_vaddr. */
+
+static bfd_vma
+dtpoff_base (info)
+ struct bfd_link_info *info;
+{
+ /* If tls_sec is NULL, we should have signalled an error already. */
+ if (elf_hash_table (info)->tls_sec == NULL)
+ return 0;
+ return elf_hash_table (info)->tls_sec->vma;
+}
+
+/* Return the relocation value for @tpoff relocation
+ if STT_TLS virtual address is ADDRESS. */
+
+static bfd_vma
+tpoff (info, address)
+ struct bfd_link_info *info;
+ bfd_vma address;
+{
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ /* If tls_sec is NULL, we should have signalled an error already. */
+ if (htab->tls_sec == NULL)
+ return 0;
+ return htab->tls_size + htab->tls_sec->vma - address;
+}
+
+/* Complain if TLS instruction relocation is against an invalid
+ instruction. */
+
+static void
+invalid_tls_insn (input_bfd, input_section, rel)
+ bfd *input_bfd;
+ asection *input_section;
+ Elf_Internal_Rela *rel;
+{
+ reloc_howto_type *howto;
+
+ howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name);
+ bfd_set_error (bfd_error_bad_value);
+}
+
+/* Relocate a 390 ELF section. */
+
+static bfd_boolean
+elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ Elf_Internal_Rela *relocs;
+ Elf_Internal_Sym *local_syms;
+ asection **local_sections;
+{
+ struct elf_s390_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_vma *local_got_offsets;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+
+ BFD_ASSERT (is_s390_elf (input_bfd));
+
+ htab = elf_s390_hash_table (info);
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
+ sym_hashes = elf_sym_hashes (input_bfd);
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ unsigned int r_type;
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ bfd_vma off;
+ bfd_vma relocation;
+ bfd_boolean unresolved_reloc;
+ bfd_reloc_status_type r;
+ int tls_type;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ if (r_type == (int) R_390_GNU_VTINHERIT
+ || r_type == (int) R_390_GNU_VTENTRY)
+ continue;
+ if (r_type >= (int) R_390_max)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ howto = elf_howto_table + r_type;
+ r_symndx = ELF64_R_SYM (rel->r_info);
+
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+ unresolved_reloc = FALSE;
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+ }
+ else
+ {
+ bfd_boolean warned ATTRIBUTE_UNUSED;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
+ }
+
+ if (sec != NULL && elf_discarded_section (sec))
+ {
+ /* For relocs against symbols from removed linkonce sections,
+ or sections discarded by a linker script, we just want the
+ section contents zeroed. Avoid any special processing. */
+ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
+ }
+
+ if (info->relocatable)
+ continue;
+
+ switch (r_type)
+ {
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ /* There are three cases for a GOTPLT relocation. 1) The
+ relocation is against the jump slot entry of a plt that
+ will get emitted to the output file. 2) The relocation
+ is against the jump slot of a plt entry that has been
+ removed. elf_s390_adjust_gotplt has created a GOT entry
+ as replacement. 3) The relocation is against a local symbol.
+ Cases 2) and 3) are the same as the GOT relocation code
+ so we just have to test for case 1 and fall through for
+ the other two. */
+ if (h != NULL && h->plt.offset != (bfd_vma) -1)
+ {
+ bfd_vma plt_index;
+
+ /* Calc. index no.
+ Current offset - size first entry / entry size. */
+ plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
+ PLT_ENTRY_SIZE;
+
+ /* Offset in GOT is PLT index plus GOT headers(3) times 4,
+ addr & GOT addr. */
+ relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
+ unresolved_reloc = FALSE;
+
+ if (r_type == R_390_GOTPLTENT)
+ relocation += htab->sgot->output_section->vma;
+ break;
+ }
+ /* Fall through. */
+
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOT64:
+ case R_390_GOTENT:
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ if (htab->sgot == NULL)
+ abort ();
+
+ if (h != NULL)
+ {
+ bfd_boolean dyn;
+
+ off = h->got.offset;
+ dyn = htab->elf.dynamic_sections_created;
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
+ || (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ || (ELF_ST_VISIBILITY (h->other)
+ && h->root.type == bfd_link_hash_undefweak))
+ {
+ /* This is actually a static link, or it is a
+ -Bsymbolic link and the symbol is defined
+ locally, or the symbol was forced to be local
+ because of a version file. We must initialize
+ this entry in the global offset table. Since the
+ offset must always be a multiple of 2, we use the
+ least significant bit to record whether we have
+ initialized it already.
+
+ When doing a dynamic link, we create a .rel.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_64 (output_bfd, relocation,
+ htab->sgot->contents + off);
+ h->got.offset |= 1;
+ }
+ }
+ else
+ unresolved_reloc = FALSE;
+ }
+ else
+ {
+ if (local_got_offsets == NULL)
+ abort ();
+
+ off = local_got_offsets[r_symndx];
+
+ /* The offset must always be a multiple of 8. We use
+ the least significant bit to record whether we have
+ already generated the necessary reloc. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_64 (output_bfd, relocation,
+ htab->sgot->contents + off);
+
+ if (info->shared)
+ {
+ asection *s;
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ s = htab->srelgot;
+ if (s == NULL)
+ abort ();
+
+ outrel.r_offset = (htab->sgot->output_section->vma
+ + htab->sgot->output_offset
+ + off);
+ outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
+ outrel.r_addend = relocation;
+ loc = s->contents;
+ loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+
+ local_got_offsets[r_symndx] |= 1;
+ }
+ }
+
+ if (off >= (bfd_vma) -2)
+ abort ();
+
+ relocation = htab->sgot->output_offset + off;
+
+ /* For @GOTENT the relocation is against the offset between
+ the instruction and the symbols entry in the GOT and not
+ between the start of the GOT and the symbols entry. We
+ add the vma of the GOT to get the correct value. */
+ if ( r_type == R_390_GOTENT
+ || r_type == R_390_GOTPLTENT)
+ relocation += htab->sgot->output_section->vma;
+
+ break;
+
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
+ /* Relocation is relative to the start of the global offset
+ table. */
+
+ /* Note that sgot->output_offset is not involved in this
+ calculation. We always want the start of .got. If we
+ defined _GLOBAL_OFFSET_TABLE in a different way, as is
+ permitted by the ABI, we might have to change this
+ calculation. */
+ relocation -= htab->sgot->output_section->vma;
+ break;
+
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ /* Use global offset table as symbol value. */
+ relocation = htab->sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_PLT16DBL:
+ case R_390_PLT32:
+ case R_390_PLT32DBL:
+ case R_390_PLT64:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table. */
+
+ /* Resolve a PLT32 reloc against a local symbol directly,
+ without using the procedure linkage table. */
+ if (h == NULL)
+ break;
+
+ if (h->plt.offset == (bfd_vma) -1
+ || htab->splt == NULL)
+ {
+ /* We didn't make a PLT entry for this symbol. This
+ happens when statically linking PIC code, or when
+ using -Bsymbolic. */
+ break;
+ }
+
+ relocation = (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset);
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ case R_390_PLTOFF64:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table relative to the start of the GOT. */
+
+ /* For local symbols or if we didn't make a PLT entry for
+ this symbol resolve the symbol directly. */
+ if ( h == NULL
+ || h->plt.offset == (bfd_vma) -1
+ || htab->splt == NULL)
+ {
+ relocation -= htab->sgot->output_section->vma;
+ break;
+ }
+
+ relocation = (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset
+ - htab->sgot->output_section->vma);
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_8:
+ case R_390_16:
+ case R_390_32:
+ case R_390_64:
+ case R_390_PC16:
+ case R_390_PC16DBL:
+ case R_390_PC32:
+ case R_390_PC32DBL:
+ case R_390_PC64:
+ if ((input_section->flags & SEC_ALLOC) == 0)
+ break;
+
+ if ((info->shared
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && ((r_type != R_390_PC16
+ && r_type != R_390_PC16DBL
+ && r_type != R_390_PC32
+ && r_type != R_390_PC32DBL
+ && r_type != R_390_PC64)
+ || !SYMBOL_CALLS_LOCAL (info, h)))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && h != NULL
+ && h->dynindx != -1
+ && !h->non_got_ref
+ && ((h->def_dynamic
+ && !h->def_regular)
+ || h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_undefined)))
+ {
+ Elf_Internal_Rela outrel;
+ bfd_boolean skip, relocate;
+ asection *sreloc;
+ bfd_byte *loc;
+
+ /* When generating a shared object, these relocations
+ are copied into the output file to be resolved at run
+ time. */
+ skip = FALSE;
+ relocate = FALSE;
+
+ outrel.r_offset =
+ _bfd_elf_section_offset (output_bfd, info, input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1)
+ skip = TRUE;
+ else if (outrel.r_offset == (bfd_vma) -2)
+ skip = TRUE, relocate = TRUE;
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (skip)
+ memset (&outrel, 0, sizeof outrel);
+ else if (h != NULL
+ && h->dynindx != -1
+ && (r_type == R_390_PC16
+ || r_type == R_390_PC16DBL
+ || r_type == R_390_PC32
+ || r_type == R_390_PC32DBL
+ || r_type == R_390_PC64
+ || !info->shared
+ || !SYMBOLIC_BIND (info, h)
+ || !h->def_regular))
+ {
+ outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
+ outrel.r_addend = rel->r_addend;
+ }
+ else
+ {
+ /* This symbol is local, or marked to become local. */
+ outrel.r_addend = relocation + rel->r_addend;
+ if (r_type == R_390_64)
+ {
+ relocate = TRUE;
+ outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
+ }
+ else
+ {
+ long sindx;
+
+ if (bfd_is_abs_section (sec))
+ sindx = 0;
+ else if (sec == NULL || sec->owner == NULL)
+ {
+ bfd_set_error(bfd_error_bad_value);
+ return FALSE;
+ }
+ else
+ {
+ asection *osec;
+
+ osec = sec->output_section;
+ sindx = elf_section_data (osec)->dynindx;
+
+ if (sindx == 0)
+ {
+ osec = htab->elf.text_index_section;
+ sindx = elf_section_data (osec)->dynindx;
+ }
+ BFD_ASSERT (sindx != 0);
+
+ /* We are turning this relocation into one
+ against a section symbol, so subtract out
+ the output section's address but not the
+ offset of the input section in the output
+ section. */
+ outrel.r_addend -= osec->vma;
+ }
+ outrel.r_info = ELF64_R_INFO (sindx, r_type);
+ }
+ }
+
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL)
+ abort ();
+
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+
+ /* If this reloc is against an external symbol, we do
+ not want to fiddle with the addend. Otherwise, we
+ need to include the symbol value so that it becomes
+ an addend for the dynamic reloc. */
+ if (! relocate)
+ continue;
+ }
+
+ break;
+
+ /* Relocations for tls literal pool entries. */
+ case R_390_TLS_IE64:
+ if (info->shared)
+ {
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+ bfd_byte *loc;
+
+ outrel.r_offset = rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset;
+ outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL)
+ abort ();
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
+ }
+ /* Fall through. */
+
+ case R_390_TLS_GD64:
+ case R_390_TLS_GOTIE64:
+ r_type = elf_s390_tls_transition (info, r_type, h == NULL);
+ tls_type = GOT_UNKNOWN;
+ if (h == NULL && local_got_offsets)
+ tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
+ else if (h != NULL)
+ {
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+ if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
+ r_type = R_390_TLS_LE64;
+ }
+ if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
+ r_type = R_390_TLS_IE64;
+
+ if (r_type == R_390_TLS_LE64)
+ {
+ /* This relocation gets optimized away by the local exec
+ access optimization. */
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd, -tpoff (info, relocation),
+ contents + rel->r_offset);
+ continue;
+ }
+
+ if (htab->sgot == NULL)
+ abort ();
+
+ if (h != NULL)
+ off = h->got.offset;
+ else
+ {
+ if (local_got_offsets == NULL)
+ abort ();
- if (! info->shared)
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return false;
- }
+ off = local_got_offsets[r_symndx];
+ }
- if (plt)
- {
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_RELA)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return false;
- }
+ emit_tls_relocs:
- if (relocs)
- {
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
- return false;
- }
-
- if ((info->flags & DF_TEXTREL) != 0)
- {
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return false;
- info->flags |= DF_TEXTREL;
- }
- }
-#undef add_dynamic_entry
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ int dr_type, indx;
- return true;
-}
+ if (htab->srelgot == NULL)
+ abort ();
-/* This function is called via elf64_s390_link_hash_traverse if we are
- creating a shared object with -Bsymbolic. It discards the space
- allocated to copy PC relative relocs against symbols which are
- defined in regular objects. We allocated space for them in the
- check_relocs routine, but we won't fill them in in the
- relocate_section routine. */
+ outrel.r_offset = (htab->sgot->output_section->vma
+ + htab->sgot->output_offset + off);
-/*ARGSUSED*/
-static boolean
-elf_s390_discard_copies (h, inf)
- struct elf_s390_link_hash_entry *h;
- PTR inf;
-{
- struct elf_s390_pcrel_relocs_copied *s;
- struct bfd_link_info *info = (struct bfd_link_info *) inf;
-
- /* If a symbol has been forced local or we have found a regular
- definition for the symbolic link case, then we won't be needing
- any relocs. */
- if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
- && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
- || info->symbolic))
- {
- for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
- s->section->_raw_size -= s->count * sizeof (Elf64_External_Rela);
- }
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+ if (r_type == R_390_TLS_GD64)
+ dr_type = R_390_TLS_DTPMOD;
+ else
+ dr_type = R_390_TLS_TPOFF;
+ if (dr_type == R_390_TLS_TPOFF && indx == 0)
+ outrel.r_addend = relocation - dtpoff_base (info);
+ else
+ outrel.r_addend = 0;
+ outrel.r_info = ELF64_R_INFO (indx, dr_type);
+ loc = htab->srelgot->contents;
+ loc += htab->srelgot->reloc_count++
+ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+
+ if (r_type == R_390_TLS_GD64)
+ {
+ if (indx == 0)
+ {
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd,
+ relocation - dtpoff_base (info),
+ htab->sgot->contents + off + GOT_ENTRY_SIZE);
+ }
+ else
+ {
+ outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
+ outrel.r_offset += GOT_ENTRY_SIZE;
+ outrel.r_addend = 0;
+ htab->srelgot->reloc_count++;
+ loc += sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+ }
- return true;
-}
-/* Relocate a 390 ELF section. */
+ if (h != NULL)
+ h->got.offset |= 1;
+ else
+ local_got_offsets[r_symndx] |= 1;
+ }
-static boolean
-elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
-{
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_vma *local_got_offsets;
- asection *sgot;
- asection *splt;
- asection *sreloc;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
+ if (off >= (bfd_vma) -2)
+ abort ();
+ if (r_type == ELF64_R_TYPE (rel->r_info))
+ {
+ relocation = htab->sgot->output_offset + off;
+ if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
+ relocation += htab->sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ }
+ else
+ {
+ bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
+ contents + rel->r_offset);
+ continue;
+ }
+ break;
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
- local_got_offsets = elf_local_got_offsets (input_bfd);
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_IEENT:
+ if (h == NULL)
+ {
+ if (local_got_offsets == NULL)
+ abort();
+ off = local_got_offsets[r_symndx];
+ if (info->shared)
+ goto emit_tls_relocs;
+ }
+ else
+ {
+ off = h->got.offset;
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+ if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
+ goto emit_tls_relocs;
+ }
- sgot = NULL;
- splt = NULL;
- sreloc = NULL;
- if (dynobj != NULL)
- {
- splt = bfd_get_section_by_name (dynobj, ".plt");
- sgot = bfd_get_section_by_name (dynobj, ".got");
- }
+ if (htab->sgot == NULL)
+ abort ();
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- asection *sec;
- bfd_vma relocation;
- bfd_reloc_status_type r;
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd, -tpoff (info, relocation),
+ htab->sgot->contents + off);
+ relocation = htab->sgot->output_offset + off;
+ if (r_type == R_390_TLS_IEENT)
+ relocation += htab->sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ break;
- r_type = ELF64_R_TYPE (rel->r_info);
- if (r_type == R_390_GNU_VTINHERIT
- || r_type == R_390_GNU_VTENTRY)
- continue;
- if (r_type < 0 || r_type >= (int) R_390_max)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- howto = elf_howto_table + r_type;
+ case R_390_TLS_LDM64:
+ if (! info->shared)
+ /* The literal pool entry this relocation refers to gets ignored
+ by the optimized code of the local exec model. Do nothing
+ and the value will turn out zero. */
+ continue;
- r_symndx = ELF64_R_SYM (rel->r_info);
+ if (htab->sgot == NULL)
+ abort ();
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
+ off = htab->tls_ldm_got.offset;
+ if (off & 1)
+ off &= ~1;
+ else
{
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ if (htab->srelgot == NULL)
+ abort ();
+
+ outrel.r_offset = (htab->sgot->output_section->vma
+ + htab->sgot->output_offset + off);
+
+ bfd_put_64 (output_bfd, 0,
+ htab->sgot->contents + off + GOT_ENTRY_SIZE);
+ outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
+ outrel.r_addend = 0;
+ loc = htab->srelgot->contents;
+ loc += htab->srelgot->reloc_count++
+ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ htab->tls_ldm_got.offset |= 1;
}
+ relocation = htab->sgot->output_offset + off;
+ unresolved_reloc = FALSE;
+ break;
+ case R_390_TLS_LE64:
+ if (info->shared)
+ {
+ /* Linking a shared library with non-fpic code requires
+ a R_390_TLS_TPOFF relocation. */
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+ bfd_byte *loc;
+ int indx;
+
+ outrel.r_offset = rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset;
+ if (h != NULL && h->dynindx != -1)
+ indx = h->dynindx;
+ else
+ indx = 0;
+ outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
+ if (indx == 0)
+ outrel.r_addend = relocation - dtpoff_base (info);
+ else
+ outrel.r_addend = 0;
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL)
+ abort ();
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+ else
+ {
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd, -tpoff (info, relocation),
+ contents + rel->r_offset);
+ }
continue;
- }
- /* This is a final link. */
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
+ case R_390_TLS_LDO64:
+ if (info->shared)
+ relocation -= dtpoff_base (info);
+ else
+ /* When converting LDO to LE, we must negate. */
+ relocation = -tpoff (info, relocation);
+ break;
+
+ /* Relocations for tls instructions. */
+ case R_390_TLS_LOAD:
+ case R_390_TLS_GDCALL:
+ case R_390_TLS_LDCALL:
+ tls_type = GOT_UNKNOWN;
+ if (h == NULL && local_got_offsets)
+ tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
+ else if (h != NULL)
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+
+ if (tls_type == GOT_TLS_GD)
+ continue;
+
+ if (r_type == R_390_TLS_LOAD)
{
- sec = h->root.u.def.section;
- if ((r_type == R_390_GOTPC
- || r_type == R_390_GOTPCDBL)
- || ((r_type == R_390_PLT16DBL ||
- r_type == R_390_PLT32 ||
- r_type == R_390_PLT32DBL ||
- r_type == R_390_PLT64)
- && splt != NULL
- && h->plt.offset != (bfd_vma) -1)
- || ((r_type == R_390_GOT12 ||
- r_type == R_390_GOT16 ||
- r_type == R_390_GOT32 ||
- r_type == R_390_GOT64 ||
- r_type == R_390_GOTENT)
- && elf_hash_table (info)->dynamic_sections_created
- && (! info->shared
- || (! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- || (info->shared
- && ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)
- && ( r_type == R_390_8 ||
- r_type == R_390_16 ||
- r_type == R_390_32 ||
- r_type == R_390_64 ||
- r_type == R_390_PC16 ||
- r_type == R_390_PC16DBL ||
- r_type == R_390_PC32 ||
- r_type == R_390_PC32DBL ||
- r_type == R_390_PC64)
- && ((input_section->flags & SEC_ALLOC) != 0
- /* DWARF will emit R_386_32 relocations in its
- sections against symbols defined externally
- in shared libraries. We can't do anything
- with them here. */
- || ((input_section->flags & SEC_DEBUGGING) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0))))
+ if (!info->shared && (h == NULL || h->dynindx == -1))
{
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- relocation = 0;
+ /* IE->LE transition. Four valid cases:
+ lg %rx,(0,%ry) -> sllg %rx,%ry,0
+ lg %rx,(%ry,0) -> sllg %rx,%ry,0
+ lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
+ lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
+ unsigned int insn0, insn1, ry;
+
+ insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
+ if (insn1 != 0x0004)
+ invalid_tls_insn (input_bfd, input_section, rel);
+ ry = 0;
+ if ((insn0 & 0xff00f000) == 0xe3000000)
+ /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x000f0000);
+ else if ((insn0 & 0xff0f0000) == 0xe3000000)
+ /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x0000f000) << 4;
+ else if ((insn0 & 0xff00f000) == 0xe300c000)
+ /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x000f0000);
+ else if ((insn0 & 0xff0f0000) == 0xe30c0000)
+ /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x0000f000) << 4;
+ else
+ invalid_tls_insn (input_bfd, input_section, rel);
+ insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
+ insn1 = 0x000d;
+ bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
+ bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
}
- else if (sec->output_section == NULL)
+ }
+ else if (r_type == R_390_TLS_GDCALL)
+ {
+ unsigned int insn0, insn1;
+
+ insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
+ if ((insn0 & 0xffff0000) != 0xc0e50000)
+ invalid_tls_insn (input_bfd, input_section, rel);
+ if (!info->shared && (h == NULL || h->dynindx == -1))
{
- (*_bfd_error_handler)
- (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
- bfd_archive_filename (input_bfd), h->root.root.string,
- bfd_get_section_name (input_bfd, input_section));
- relocation = 0;
+ /* GD->LE transition.
+ brasl %r14,__tls_get_addr@plt -> brcl 0,. */
+ insn0 = 0xc0040000;
+ insn1 = 0x0000;
}
else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+ {
+ /* GD->IE transition.
+ brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
+ insn0 = 0xe322c000;
+ insn1 = 0x0004;
+ }
+ bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
+ bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
}
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
- && !info->no_undefined
- && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- relocation = 0;
- else
+ else if (r_type == R_390_TLS_LDCALL)
{
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset,
- (!info->shared || info->no_undefined
- || ELF_ST_VISIBILITY (h->other)))))
- return false;
- relocation = 0;
+ if (!info->shared)
+ {
+ unsigned int insn0, insn1;
+
+ insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
+ if ((insn0 & 0xffff0000) != 0xc0e50000)
+ invalid_tls_insn (input_bfd, input_section, rel);
+ /* LD->LE transition.
+ brasl %r14,__tls_get_addr@plt -> brcl 0,. */
+ insn0 = 0xc0040000;
+ insn1 = 0x0000;
+ bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
+ bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
+ }
}
+ continue;
+
+ default:
+ break;
}
- switch (r_type)
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+ because such sections are not SEC_ALLOC and thus ld.so will
+ not process them. */
+ if (unresolved_reloc
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && h->def_dynamic))
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ h->root.root.string);
+
+ if (r_type == R_390_20
+ || r_type == R_390_GOT20
+ || r_type == R_390_GOTPLT20
+ || r_type == R_390_TLS_GOTIE20)
{
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- BFD_ASSERT (sgot != NULL);
-
- if (h != NULL)
- {
- bfd_vma off;
-
- off = h->got.offset;
- BFD_ASSERT (off != (bfd_vma) -1);
-
- if (! elf_hash_table (info)->dynamic_sections_created
- || (info->shared
- && (info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
- {
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally, or the symbol was forced to be local
- because of a version file. We must initialize
- this entry in the global offset table. Since the
- offset must always be a multiple of 2, we use the
- least significant bit to record whether we have
- initialized it already.
-
- When doing a dynamic link, we create a .rel.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation,
- sgot->contents + off);
- h->got.offset |= 1;
- }
- }
- relocation = sgot->output_offset + off;
- }
- else
- {
- bfd_vma off;
-
- BFD_ASSERT (local_got_offsets != NULL
- && local_got_offsets[r_symndx] != (bfd_vma) -1);
-
- off = local_got_offsets[r_symndx];
-
- /* The offset must always be a multiple of 8. We use
- the least significant bit to record whether we have
- already generated the necessary reloc. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation, sgot->contents + off);
-
- if (info->shared)
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
-
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (srelgot != NULL);
-
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + off);
- outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- outrel.r_addend = relocation;
- bfd_elf64_swap_reloca_out (output_bfd, &outrel,
- (((Elf64_External_Rela *)
- srelgot->contents)
- + srelgot->reloc_count));
- ++srelgot->reloc_count;
- }
-
- local_got_offsets[r_symndx] |= 1;
- }
-
- relocation = sgot->output_offset + off;
- }
-
- /*
- * For @GOTENT the relocation is against the offset between
- * the instruction and the symbols entry in the GOT and not
- * between the start of the GOT and the symbols entry. We
- * add the vma of the GOT to get the correct value.
- */
- if (r_type == R_390_GOTENT)
- relocation += sgot->output_section->vma;
-
- break;
-
- case R_390_GOTOFF:
- /* Relocation is relative to the start of the global offset
- table. */
-
- if (sgot == NULL)
- {
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- }
-
- /* Note that sgot->output_offset is not involved in this
- calculation. We always want the start of .got. If we
- defined _GLOBAL_OFFSET_TABLE in a different way, as is
- permitted by the ABI, we might have to change this
- calculation. */
- relocation -= sgot->output_section->vma;
-
- break;
-
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- /* Use global offset table as symbol value. */
-
- if (sgot == NULL)
- {
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- }
-
- relocation = sgot->output_section->vma;
-
- break;
-
- case R_390_PLT16DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
-
- /* Resolve a PLT32 reloc against a local symbol directly,
- without using the procedure linkage table. */
- if (h == NULL)
- break;
-
- if (h->plt.offset == (bfd_vma) -1 || splt == NULL)
- {
- /* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
- break;
- }
-
- relocation = (splt->output_section->vma
- + splt->output_offset
- + h->plt.offset);
-
- break;
-
- case R_390_8:
- case R_390_16:
- case R_390_32:
- case R_390_64:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC32:
- case R_390_PC32DBL:
- case R_390_PC64:
- if (info->shared
- && (input_section->flags & SEC_ALLOC) != 0
- && (r_type == R_390_8
- || r_type == R_390_16
- || r_type == R_390_32
- || r_type == R_390_64
- || (h != NULL
- && h->dynindx != -1
- && (! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))))
- {
- Elf_Internal_Rela outrel;
- boolean skip, relocate;
-
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
-
- if (sreloc == NULL)
- {
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- elf_elfheader (input_bfd)->e_shstrndx,
- elf_section_data (input_section)->rel_hdr.sh_name));
- if (name == NULL)
- return false;
-
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (input_bfd,
- input_section),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- BFD_ASSERT (sreloc != NULL);
- }
-
- skip = false;
-
- if (elf_section_data (input_section)->stab_info == NULL)
- outrel.r_offset = rel->r_offset;
- else
- {
- bfd_vma off;
-
- off = (_bfd_stab_section_offset
- (output_bfd, &elf_hash_table (info)->stab_info,
- input_section,
- &elf_section_data (input_section)->stab_info,
- rel->r_offset));
- if (off == (bfd_vma) -1)
- skip = true;
- outrel.r_offset = off;
- }
-
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
-
- if (skip)
- {
- memset (&outrel, 0, sizeof outrel);
- relocate = false;
- }
- else if (r_type == R_390_PC16 ||
- r_type == R_390_PC16DBL ||
- r_type == R_390_PC32 ||
- r_type == R_390_PC32DBL ||
- r_type == R_390_PC64)
- {
- BFD_ASSERT (h != NULL && h->dynindx != -1);
- relocate = false;
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- /* h->dynindx may be -1 if this symbol was marked to
- become local. */
- if (h == NULL
- || ((info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) != 0))
- {
- relocate = true;
- outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- BFD_ASSERT (h->dynindx != -1);
- relocate = false;
- outrel.r_info = ELF64_R_INFO (h->dynindx, R_390_64);
- outrel.r_addend = relocation + rel->r_addend;
- }
- }
-
- bfd_elf64_swap_reloca_out (output_bfd, &outrel,
- (((Elf64_External_Rela *)
- sreloc->contents)
- + sreloc->reloc_count));
- ++sreloc->reloc_count;
-
- /* If this reloc is against an external symbol, we do
- not want to fiddle with the addend. Otherwise, we
- need to include the symbol value so that it becomes
- an addend for the dynamic reloc. */
- if (! relocate)
- continue;
- }
-
- break;
-
- default:
- break;
- }
-
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ relocation += rel->r_addend;
+ relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, 0);
+ }
+ else
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
if (r != bfd_reloc_ok)
{
- switch (r)
+ const char *name;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
{
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- {
- const char *name;
+ name = bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ if (name == NULL)
+ return FALSE;
+ if (*name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- return false;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- }
- break;
+ if (r == bfd_reloc_overflow)
+ {
+
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section,
+ rel->r_offset)))
+ return FALSE;
+ }
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): reloc against `%s': error %d"),
+ input_bfd, input_section,
+ (long) rel->r_offset, name, (int) r);
+ return FALSE;
}
}
}
- return true;
+ return TRUE;
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
-static boolean
+static bfd_boolean
elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd;
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
- bfd *dynobj;
+ struct elf_s390_link_hash_table *htab;
- dynobj = elf_hash_table (info)->dynobj;
+ htab = elf_s390_hash_table (info);
if (h->plt.offset != (bfd_vma) -1)
{
- asection *splt;
- asection *srela;
- Elf_Internal_Rela rela;
- bfd_vma got_offset;
bfd_vma plt_index;
- asection *sgot;
+ bfd_vma got_offset;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbol has an entry in the procedure linkage table. Set
- it up. */
-
- BFD_ASSERT (h->dynindx != -1);
+ it up. */
- splt = bfd_get_section_by_name (dynobj, ".plt");
- sgot = bfd_get_section_by_name (dynobj, ".got.plt");
- srela = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
+ if (h->dynindx == -1
+ || htab->splt == NULL
+ || htab->sgotplt == NULL
+ || htab->srelplt == NULL)
+ abort ();
/* Calc. index no.
- Current offset - size first entry / entry size. */
+ Current offset - size first entry / entry size. */
plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
/* Offset in GOT is PLT index plus GOT headers(3) times 8,
- addr & GOT addr. */
+ addr & GOT addr. */
got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
/* Fill in the blueprint of a PLT. */
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD0,
- splt->contents + h->plt.offset);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
- splt->contents + h->plt.offset + 4);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
- splt->contents + h->plt.offset + 8);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD3,
- splt->contents + h->plt.offset + 12);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD4,
- splt->contents + h->plt.offset + 16);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD5,
- splt->contents + h->plt.offset + 20);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD6,
- splt->contents + h->plt.offset + 24);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD7,
- splt->contents + h->plt.offset + 28);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
+ htab->splt->contents + h->plt.offset);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
+ htab->splt->contents + h->plt.offset + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
+ htab->splt->contents + h->plt.offset + 8);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
+ htab->splt->contents + h->plt.offset + 12);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
+ htab->splt->contents + h->plt.offset + 16);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5,
+ htab->splt->contents + h->plt.offset + 20);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6,
+ htab->splt->contents + h->plt.offset + 24);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7,
+ htab->splt->contents + h->plt.offset + 28);
/* Fixup the relative address to the GOT entry */
bfd_put_32 (output_bfd,
- (sgot->output_section->vma + sgot->output_offset + got_offset
- - (splt->output_section->vma + h->plt.offset))/2,
- splt->contents + h->plt.offset + 2);
+ (htab->sgotplt->output_section->vma +
+ htab->sgotplt->output_offset + got_offset
+ - (htab->splt->output_section->vma + h->plt.offset))/2,
+ htab->splt->contents + h->plt.offset + 2);
/* Fixup the relative branch to PLT 0 */
bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
(PLT_ENTRY_SIZE * plt_index) + 22)/2,
- splt->contents + h->plt.offset + 24);
+ htab->splt->contents + h->plt.offset + 24);
/* Fixup offset into symbol table */
bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
- splt->contents + h->plt.offset + 28);
-
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + got_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
- rela.r_addend = 0;
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) srela->contents
- + plt_index ));
+ htab->splt->contents + h->plt.offset + 28);
/* Fill in the entry in the global offset table.
- Points to instruction after GOT offset. */
+ Points to instruction after GOT offset. */
bfd_put_64 (output_bfd,
- (splt->output_section->vma
- + splt->output_offset
+ (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ h->plt.offset
+ 14),
- sgot->contents + got_offset);
+ htab->sgotplt->contents + got_offset);
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_offset = (htab->sgotplt->output_section->vma
+ + htab->sgotplt->output_offset
+ + got_offset);
+ rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
+ rela.r_addend = 0;
+ loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ if (!h->def_regular)
{
/* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
+ the .plt section. Leave the value alone. This is a clue
+ for the dynamic linker, to make function pointer
+ comparisons work between an application and shared
+ library. */
sym->st_shndx = SHN_UNDEF;
}
}
- if (h->got.offset != (bfd_vma) -1)
+ if (h->got.offset != (bfd_vma) -1
+ && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
+ && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
+ && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
{
- asection *sgot;
- asection *srela;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbol has an entry in the global offset table. Set it
- up. */
+ up. */
+ if (htab->sgot == NULL || htab->srelgot == NULL)
+ abort ();
- sgot = bfd_get_section_by_name (dynobj, ".got");
- srela = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (sgot != NULL && srela != NULL);
-
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
+ rela.r_offset = (htab->sgot->output_section->vma
+ + htab->sgot->output_offset
+ (h->got.offset &~ (bfd_vma) 1));
/* If this is a static link, or it is a -Bsymbolic link and the
of a version file, we just want to emit a RELATIVE reloc.
The entry in the global offset table will already have been
initialized in the relocate_section function. */
- if (! elf_hash_table (info)->dynamic_sections_created
- || (info->shared
- && (info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
- {
- rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
+ if (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ {
+ if (!h->def_regular)
+ return FALSE;
+ BFD_ASSERT((h->got.offset & 1) != 0);
+ rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
+ rela.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
else
{
BFD_ASSERT((h->got.offset & 1) == 0);
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
+ bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
- rela.r_addend = 0;
- }
+ rela.r_addend = 0;
+ }
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) srela->contents
- + srela->reloc_count));
- ++srela->reloc_count;
+ loc = htab->srelgot->contents;
+ loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
}
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ if (h->needs_copy)
{
- asection *s;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbols needs a copy reloc. Set it up. */
- BFD_ASSERT (h->dynindx != -1
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak));
-
-
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
- BFD_ASSERT (s != NULL);
+ if (h->dynindx == -1
+ || (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ || htab->srelbss == NULL)
+ abort ();
rela.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
rela.r_addend = 0;
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) s->contents
- + s->reloc_count));
- ++s->reloc_count;
+ loc = htab->srelbss->contents;
+ loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
}
/* Mark some specially defined symbols as absolute. */
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
+ || h == htab->elf.hgot
+ || h == htab->elf.hplt)
sym->st_shndx = SHN_ABS;
- return true;
+ return TRUE;
+}
+
+/* Used to decide how to sort relocs in an optimal manner for the
+ dynamic linker, before writing them out. */
+
+static enum elf_reloc_type_class
+elf_s390_reloc_type_class (rela)
+ const Elf_Internal_Rela *rela;
+{
+ switch ((int) ELF64_R_TYPE (rela->r_info))
+ {
+ case R_390_RELATIVE:
+ return reloc_class_relative;
+ case R_390_JMP_SLOT:
+ return reloc_class_plt;
+ case R_390_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
}
/* Finish up the dynamic sections. */
-static boolean
+static bfd_boolean
elf_s390_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
+ struct elf_s390_link_hash_table *htab;
bfd *dynobj;
asection *sdyn;
- asection *sgot;
- dynobj = elf_hash_table (info)->dynobj;
-
- sgot = bfd_get_section_by_name (dynobj, ".got.plt");
- BFD_ASSERT (sgot != NULL);
+ htab = elf_s390_hash_table (info);
+ dynobj = htab->elf.dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
- if (elf_hash_table (info)->dynamic_sections_created)
+ if (htab->elf.dynamic_sections_created)
{
- asection *splt;
Elf64_External_Dyn *dyncon, *dynconend;
- BFD_ASSERT (sdyn != NULL);
+ if (sdyn == NULL || htab->sgot == NULL)
+ abort ();
dyncon = (Elf64_External_Dyn *) sdyn->contents;
- dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
- const char *name;
asection *s;
bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
default:
- break;
+ continue;
case DT_PLTGOT:
- name = ".got";
- goto get_vma;
+ dyn.d_un.d_ptr = htab->sgot->output_section->vma;
+ break;
+
case DT_JMPREL:
- name = ".rela.plt";
- get_vma:
- s = bfd_get_section_by_name(output_bfd, name);
- BFD_ASSERT (s != NULL);
- dyn.d_un.d_ptr = s->vma;
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
break;
case DT_PLTRELSZ:
- s = bfd_get_section_by_name (output_bfd, ".rela.plt");
- BFD_ASSERT (s != NULL);
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ s = htab->srelplt->output_section;
+ dyn.d_un.d_val = s->size;
break;
case DT_RELASZ:
linker script arranges for .rela.plt to follow all
other relocation sections, we don't have to worry
about changing the DT_RELA entry. */
- s = bfd_get_section_by_name (output_bfd, ".rela.plt");
- if (s != NULL)
- {
- if (s->_cooked_size != 0)
- dyn.d_un.d_val -= s->_cooked_size;
- else
- dyn.d_un.d_val -= s->_raw_size;
- }
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ s = htab->srelplt->output_section;
+ dyn.d_un.d_val -= s->size;
break;
}
+
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
}
/* Fill in the special first entry in the procedure linkage table. */
- splt = bfd_get_section_by_name (dynobj, ".plt");
- if (splt && splt->_raw_size > 0)
+ if (htab->splt && htab->splt->size > 0)
{
/* fill in blueprint for plt 0 entry */
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD0,
- splt->contents );
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD1,
- splt->contents +4 );
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD3,
- splt->contents +12 );
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD4,
- splt->contents +16 );
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD5,
- splt->contents +20 );
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD6,
- splt->contents + 24);
- bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD7,
- splt->contents + 28 );
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0,
+ htab->splt->contents );
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
+ htab->splt->contents +4 );
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
+ htab->splt->contents +12 );
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
+ htab->splt->contents +16 );
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
+ htab->splt->contents +20 );
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6,
+ htab->splt->contents + 24);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7,
+ htab->splt->contents + 28 );
/* Fixup relative address to start of GOT */
bfd_put_32 (output_bfd,
- (sgot->output_section->vma + sgot->output_offset
- - splt->output_section->vma - 6)/2,
- splt->contents + 8);
+ (htab->sgotplt->output_section->vma +
+ htab->sgotplt->output_offset
+ - htab->splt->output_section->vma - 6)/2,
+ htab->splt->contents + 8);
}
-
- elf_section_data (splt->output_section)->this_hdr.sh_entsize =
- PLT_ENTRY_SIZE;
+ elf_section_data (htab->splt->output_section)
+ ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
}
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- if (sgot->_raw_size > 0)
+ if (htab->sgotplt)
{
- if (sdyn == NULL)
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
- else
- bfd_put_64 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- sgot->contents);
-
- /* One entry for shared object struct ptr. */
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
- /* One entry for _dl_runtime_resolve. */
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + 12);
- }
-
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
-
- return true;
-}
+ /* Fill in the first three entries in the global offset table. */
+ if (htab->sgotplt->size > 0)
+ {
+ bfd_put_64 (output_bfd,
+ (sdyn == NULL ? (bfd_vma) 0
+ : sdyn->output_section->vma + sdyn->output_offset),
+ htab->sgotplt->contents);
+ /* One entry for shared object struct ptr. */
+ bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
+ /* One entry for _dl_runtime_resolve. */
+ bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12);
+ }
-static boolean
-elf_s390_object_p (abfd)
- bfd *abfd;
-{
- return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_esame);
+ elf_section_data (htab->sgot->output_section)
+ ->this_hdr.sh_entsize = 8;
+ }
+ return TRUE;
}
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+ or (bfd_vma) -1 if it should not be included. */
-static enum elf_reloc_type_class
-elf_s390_reloc_type_class (rela)
- const Elf_Internal_Rela *rela;
+static bfd_vma
+elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
+ const arelent *rel ATTRIBUTE_UNUSED)
{
- switch ((int) ELF64_R_TYPE (rela->r_info))
- {
- case R_390_RELATIVE:
- return reloc_class_relative;
- case R_390_JMP_SLOT:
- return reloc_class_plt;
- case R_390_COPY:
- return reloc_class_copy;
- default:
- return reloc_class_normal;
- }
+ return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
}
-/*
- * Why was the hash table entry size definition changed from
- * ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
- * this is the only reason for the s390_elf64_size_info structure.
- */
+
+/* Why was the hash table entry size definition changed from
+ ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
+ this is the only reason for the s390_elf64_size_info structure. */
const struct elf_size_info s390_elf64_size_info =
{
sizeof (Elf64_External_Sym),
sizeof (Elf64_External_Dyn),
sizeof (Elf_External_Note),
- 8, /* hash-table entry size */
- 1, /* internal relocations per external relocations */
- 64, /* arch_size */
- 8, /* file_align */
+ 8, /* hash-table entry size. */
+ 1, /* internal relocations per external relocations. */
+ 64, /* arch_size. */
+ 3, /* log_file_align. */
ELFCLASS64, EV_CURRENT,
bfd_elf64_write_out_phdrs,
bfd_elf64_write_shdrs_and_ehdr,
+ bfd_elf64_checksum_contents,
bfd_elf64_write_relocs,
+ bfd_elf64_swap_symbol_in,
bfd_elf64_swap_symbol_out,
bfd_elf64_slurp_reloc_table,
bfd_elf64_slurp_symbol_table,
bfd_elf64_swap_dyn_in,
bfd_elf64_swap_dyn_out,
- NULL,
- NULL,
- NULL,
- NULL
+ bfd_elf64_swap_reloc_in,
+ bfd_elf64_swap_reloc_out,
+ bfd_elf64_swap_reloca_in,
+ bfd_elf64_swap_reloca_out
};
#define TARGET_BIG_SYM bfd_elf64_s390_vec
#define elf_backend_size_info s390_elf64_size_info
#define elf_backend_can_gc_sections 1
+#define elf_backend_can_refcount 1
#define elf_backend_want_got_plt 1
#define elf_backend_plt_readonly 1
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 24
-#define elf_backend_plt_header_size PLT_ENTRY_SIZE
+#define elf_backend_rela_normal 1
#define elf_info_to_howto elf_s390_info_to_howto
-#define bfd_elf64_bfd_final_link _bfd_elf64_gc_common_final_link
#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
+#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
#define elf_backend_check_relocs elf_s390_check_relocs
-#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
+#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
+#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
+#define elf_backend_reloc_type_class elf_s390_reloc_type_class
#define elf_backend_relocate_section elf_s390_relocate_section
#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
+#define elf_backend_init_index_section _bfd_elf_init_1_index_section
#define elf_backend_reloc_type_class elf_s390_reloc_type_class
+#define elf_backend_plt_sym_val elf_s390_plt_sym_val
-#define elf_backend_object_p elf_s390_object_p
+#define bfd_elf64_mkobject elf_s390_mkobject
+#define elf_backend_object_p elf_s390_object_p
#include "elf64-target.h"
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