/* IBM S/390-specific support for 32-bit ELF
- Copyright 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 2000-2020 Free Software Foundation, Inc.
Contributed by Carl B. Pedersen and Martin Schwidefsky.
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"
-
-static reloc_howto_type *elf_s390_reloc_type_lookup
- 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 *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 create_got_section
- PARAMS((bfd *, struct bfd_link_info *));
-static boolean elf_s390_create_dynamic_sections
- PARAMS((bfd *, struct bfd_link_info *));
-static void elf_s390_copy_indirect_symbol
- PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
-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
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static boolean elf_s390_adjust_dynamic_symbol
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static boolean allocate_dynrelocs
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean readonly_dynrelocs
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf_s390_size_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static 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
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
-static enum elf_reloc_type_class elf_s390_reloc_type_class
- PARAMS ((const Elf_Internal_Rela *));
-static boolean elf_s390_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf_s390_object_p PARAMS ((bfd *));
-
-#define USE_RELA 1 /* We want RELA relocations, not REL. */
-
#include "elf/s390.h"
+#include <stdarg.h>
+
+static bfd_reloc_status_type
+s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
+ asection *, bfd *, char **);
+static bfd_reloc_status_type
+s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
+ asection *, bfd *, char **);
/* The relocation "howto" table. */
{
HOWTO (R_390_NONE, /* type */
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
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, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_COPY", false, 0,0xffffffff, false),
- HOWTO(R_390_GLOB_DAT, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GLOB_DAT",false, 0,0xffffffff, false),
- HOWTO(R_390_JMP_SLOT, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_JMP_SLOT",false, 0,0xffffffff, false),
- HOWTO(R_390_RELATIVE, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_RELATIVE",false, 0,0xffffffff, false),
- HOWTO(R_390_GOTOFF, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTOFF", false, 0,0xffffffff, false),
- HOWTO(R_390_GOTPC, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPC", false, 0,0xffffffff, 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),
+ 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, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, 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, 0,0xffffffff, TRUE),
+ EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
+ EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
+ EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
+ EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
+ HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
+ 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),
+ EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
+ HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, 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),
+ EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
+ 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),
+ HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
+ 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),
+ HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
+ HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
+ HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
+ HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
+ HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
+ HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
+ HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, 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),
+ HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
+ HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
+ HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
+ HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
};
/* GNU extension to record C++ vtable hierarchy. */
static reloc_howto_type elf32_s390_vtinherit_howto =
- HOWTO (R_390_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", false,0, 0, false);
+ HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
static reloc_howto_type elf32_s390_vtentry_howto =
- HOWTO (R_390_GNU_VTENTRY, 0,2,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", false,0,0, false);
+ HOWTO (R_390_GNU_VTENTRY, 0,2,0,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;
+elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
{
switch (code)
{
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];
+ 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_PC12DBL:
+ return &elf_howto_table[(int) R_390_PC12DBL];
+ case BFD_RELOC_390_PLT12DBL:
+ return &elf_howto_table[(int) R_390_PLT12DBL];
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_PC24DBL:
+ return &elf_howto_table[(int) R_390_PC24DBL];
+ case BFD_RELOC_390_PLT24DBL:
+ return &elf_howto_table[(int) R_390_PLT24DBL];
+ 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_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_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_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_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_GD32:
+ return &elf_howto_table[(int) R_390_TLS_GD32];
+ case BFD_RELOC_390_TLS_GOTIE12:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE12];
+ case BFD_RELOC_390_TLS_GOTIE32:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE32];
+ case BFD_RELOC_390_TLS_LDM32:
+ return &elf_howto_table[(int) R_390_TLS_LDM32];
+ case BFD_RELOC_390_TLS_IE32:
+ return &elf_howto_table[(int) R_390_TLS_IE32];
+ case BFD_RELOC_390_TLS_IEENT:
+ return &elf_howto_table[(int) R_390_TLS_IEENT];
+ case BFD_RELOC_390_TLS_LE32:
+ return &elf_howto_table[(int) R_390_TLS_LE32];
+ case BFD_RELOC_390_TLS_LDO32:
+ return &elf_howto_table[(int) R_390_TLS_LDO32];
+ 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_390_IRELATIVE:
+ return &elf_howto_table[(int) R_390_IRELATIVE];
case BFD_RELOC_VTABLE_INHERIT:
return &elf32_s390_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
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 (elf32_s390_vtinherit_howto.name, r_name) == 0)
+ return &elf32_s390_vtinherit_howto;
+ if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
+ return &elf32_s390_vtentry_howto;
+
+ return NULL;
+}
+
/* We need to use ELF32_R_TYPE so we have our own copy of this function,
and elf32-s390.c has its own copy. */
-static void
-elf_s390_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf_Internal_Rela *dst;
+static bfd_boolean
+elf_s390_info_to_howto (bfd *abfd,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
{
- switch (ELF32_R_TYPE(dst->r_info))
+ unsigned int r_type = ELF32_R_TYPE(dst->r_info);
+
+ switch (r_type)
{
case R_390_GNU_VTINHERIT:
cache_ptr->howto = &elf32_s390_vtinherit_howto;
break;
default:
- BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_390_max);
- cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)];
+ if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ cache_ptr->howto = &elf_howto_table[r_type];
+ }
+
+ return TRUE;
+}
+
+/* A relocation function which doesn't do anything. */
+static bfd_reloc_status_type
+s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ void * 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 (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void * data ATTRIBUTE_UNUSED,
+ 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
-elf_s390_is_local_label_name (abfd, name)
- bfd *abfd;
- const char *name;
+static bfd_boolean
+elf_s390_is_local_label_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);
}
/* The name of the dynamic interpreter. This is put in the .interp
section. */
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
+#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+
+/* 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 GOT_ENTRY_SIZE 4
+#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
+
/* The first three entries in a procedure linkage table are reserved,
and the initial contents are unimportant (we zero them out).
Subsequent entries look like this. See the SVR4 ABI 386
Word 1 is a pointer to a structure describing the object
Word 2 is used to point to the loader entry address.
- The code for position independand PLT entries looks like this:
+ The code for position independent PLT entries looks like this:
r12 holds addr of the current GOT at entry to the PLT
The GOT holds the address in the PLT to be executed.
The loader then gets:
24(15) = Pointer to the structure describing the object.
- 28(15) = Offset in symbol table
+ 28(15) = Offset into rela.plt
The loader must then find the module where the function is
and insert the address in the GOT.
Note: 390 can only address +- 64 K relative.
- We check if offset > 65536, then make a relative branch -64xxx
- back to a previous defined branch
-
-PLT1: BASR 1,0 # 2 bytes
- L 1,22(1) # 4 bytes Load offset in GOT in r 1
- L 1,(1,12) # 4 bytes Load address from GOT in r1
- BCR 15,1 # 2 bytes Jump to address
-RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
- L 1,14(1) # 4 bytes Load offset in symol table in r1
+ We check if offset > 65536, then make a relative branch -64xxx
+ back to a previous defined branch
+
+PLT1: BASR 1,0 # 2 bytes
+ L 1,22(1) # 4 bytes Load offset in GOT in r 1
+ L 1,(1,12) # 4 bytes Load address from GOT in r1
+ BCR 15,1 # 2 bytes Jump to address
+RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
+ L 1,14(1) # 4 bytes Load offset in symol table in r1
BRC 15,-x # 4 bytes Jump to start of PLT
- .word 0 # 2 bytes filler
- .long ? # 4 bytes offset in GOT
- .long ? # 4 bytes offset into symbol table
+ .word 0 # 2 bytes filler
+ .long ? # 4 bytes offset in GOT
+ .long ? # 4 bytes offset into rela.plt
This was the general case. There are two additional, optimizes PLT
definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
First the one for GOT offsets < 4096:
-PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
- BCR 15,1 # 2 bytes Jump to address
- .word 0,0,0 # 6 bytes filler
-RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
- L 1,14(1) # 4 bytes Load offset in symbol table in r1
- BRC 15,-x # 4 bytes Jump to start of PLT
- .word 0,0,0 # 6 bytes filler
- .long ? # 4 bytes offset into symbol table
+PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
+ BCR 15,1 # 2 bytes Jump to address
+ .word 0,0,0 # 6 bytes filler
+RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
+ L 1,14(1) # 4 bytes Load offset in rela.plt in r1
+ BRC 15,-x # 4 bytes Jump to start of PLT
+ .word 0,0,0 # 6 bytes filler
+ .long ? # 4 bytes offset into rela.plt
Second the one for GOT offsets < 32768:
-PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
- L 1,(1,12) # 4 bytes Load address from GOT to r1
- BCR 15,1 # 2 bytes Jump to address
- .word 0 # 2 bytes filler
-RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
- L 1,14(1) # 4 bytes Load offset in symbol table in r1
- BRC 15,-x # 4 bytes Jump to start of PLT
- .word 0,0,0 # 6 bytes filler
- .long ? # 4 bytes offset into symbol table
+PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
+ L 1,(1,12) # 4 bytes Load address from GOT to r1
+ BCR 15,1 # 2 bytes Jump to address
+ .word 0 # 2 bytes filler
+RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
+ L 1,14(1) # 4 bytes Load offset in rela.plt in r1
+ BRC 15,-x # 4 bytes Jump to start of PLT
+ .word 0,0,0 # 6 bytes filler
+ .long ? # 4 bytes offset into rela.plt
Total = 32 bytes per PLT entry
The code for static build PLT entries looks like this:
-PLT1: BASR 1,0 # 2 bytes
- L 1,22(1) # 4 bytes Load address of GOT entry
- L 1,0(0,1) # 4 bytes Load address from GOT in r1
- BCR 15,1 # 2 bytes Jump to address
-RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
- L 1,14(1) # 4 bytes Load offset in symbol table in r1
+PLT1: BASR 1,0 # 2 bytes
+ L 1,22(1) # 4 bytes Load address of GOT entry
+ L 1,0(0,1) # 4 bytes Load address from GOT in r1
+ BCR 15,1 # 2 bytes Jump to address
+RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
+ L 1,14(1) # 4 bytes Load offset in symbol table in r1
BRC 15,-x # 4 bytes Jump to start of PLT
- .word 0 # 2 bytes filler
- .long ? # 4 bytes address of GOT entry
- .long ? # 4 bytes offset into symbol table */
-
-#define PLT_PIC_ENTRY_WORD0 0x0d105810
-#define PLT_PIC_ENTRY_WORD1 0x10165811
-#define PLT_PIC_ENTRY_WORD2 0xc00007f1
-#define PLT_PIC_ENTRY_WORD3 0x0d105810
-#define PLT_PIC_ENTRY_WORD4 0x100ea7f4
-
-#define PLT_PIC12_ENTRY_WORD0 0x5810c000
-#define PLT_PIC12_ENTRY_WORD1 0x07f10000
-#define PLT_PIC12_ENTRY_WORD2 0x00000000
-#define PLT_PIC12_ENTRY_WORD3 0x0d105810
-#define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
-
-#define PLT_PIC16_ENTRY_WORD0 0xa7180000
-#define PLT_PIC16_ENTRY_WORD1 0x5811c000
-#define PLT_PIC16_ENTRY_WORD2 0x07f10000
-#define PLT_PIC16_ENTRY_WORD3 0x0d105810
-#define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
-
-#define PLT_ENTRY_WORD0 0x0d105810
-#define PLT_ENTRY_WORD1 0x10165810
-#define PLT_ENTRY_WORD2 0x100007f1
-#define PLT_ENTRY_WORD3 0x0d105810
-#define PLT_ENTRY_WORD4 0x100ea7f4
-
-/* The first PLT entry pushes the offset into the symbol table
+ .word 0 # 2 bytes filler
+ .long ? # 4 bytes address of GOT entry
+ .long ? # 4 bytes offset into rela.plt */
+
+static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
+ {
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
+ 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
+ 0x07, 0xf1, /* br %r1 */
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
+ 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
+ 0x00, 0x00, /* padding */
+ 0x00, 0x00, 0x00, 0x00, /* GOT offset */
+ 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
+ };
+
+/* Generic PLT pic entry. */
+static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
+ {
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
+ 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
+ 0x07, 0xf1, /* br %r1 */
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
+ 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
+ 0x00, 0x00, /* padding */
+ 0x00, 0x00, 0x00, 0x00, /* GOT offset */
+ 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
+ };
+
+/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
+ when generating the PLT slot with the GOT offset. */
+static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
+ {
+ 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
+ 0x07, 0xf1, /* br %r1 */
+ 0x00, 0x00, 0x00, 0x00, /* padding */
+ 0x00, 0x00,
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
+ 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00
+ };
+
+/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
+ when generating the PLT slot with the GOT offset. */
+static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
+ {
+ 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
+ 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
+ 0x07, 0xf1, /* br %r1 */
+ 0x00, 0x00,
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
+ 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00
+ };
+
+/* The first PLT entry pushes the offset into the rela.plt
from R1 onto the stack at 8(15) and the loader object info
at 12(15), loads the loader address in R1 and jumps to it. */
/* The first entry in the PLT for PIC code:
PLT0:
- ST 1,28(15) # R1 has offset into symbol table
- L 1,4(12) # Get loader ino(object struct address)
- ST 1,24(15) # Store address
- L 1,8(12) # Entry address of loader in R1
- BR 1 # Jump to loader
+ ST 1,28(15) # R1 has offset into rela.plt
+ L 1,4(12) # Get loader ino(object struct address)
+ ST 1,24(15) # Store address
+ L 1,8(12) # Entry address of loader in R1
+ BR 1 # Jump to loader
The first entry in the PLT for static code:
PLT0:
- ST 1,28(15) # R1 has offset into symbol table
+ ST 1,28(15) # R1 has offset into rela.plt
BASR 1,0
- L 1,18(0,1) # Get address of GOT
- MVC 24(4,15),4(1) # Move loader ino to stack
- L 1,8(1) # Get address of loader
- BR 1 # Jump to loader
- .word 0 # filler
- .long got # address of GOT */
-
-#define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
-#define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
-#define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
-#define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
-#define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
-
-#define PLT_FIRST_ENTRY_WORD0 0x5010f01c
-#define PLT_FIRST_ENTRY_WORD1 0x0d105810
-#define PLT_FIRST_ENTRY_WORD2 0x1012D203
-#define PLT_FIRST_ENTRY_WORD3 0xf0181004
-#define PLT_FIRST_ENTRY_WORD4 0x58101008
-#define PLT_FIRST_ENTRY_WORD5 0x07f10000
-
-/* The s390 linker needs to keep track of the number of relocs that it
- 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_dyn_relocs
-{
- struct elf_s390_dyn_relocs *next;
-
- /* The input section of the reloc. */
- asection *sec;
+ L 1,18(0,1) # Get address of GOT
+ MVC 24(4,15),4(1) # Move loader ino to stack
+ L 1,8(1) # Get address of loader
+ BR 1 # Jump to loader
+ .word 0 # filler
+ .long got # address of GOT */
+
+static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
+ {
+ 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
+ 0x0d, 0x10, /* basr %r1,%r0 */
+ 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
+ 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
+ 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
+ 0x07, 0xf1, /* br %r1 */
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00
+ };
+
+static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
+ {
+ 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
+ 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
+ 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
+ 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
+ 0x07, 0xf1, /* br %r1 */
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00
+ };
- /* 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_link_hash_entry elf;
/* Track dynamic relocs copied for this symbol. */
- struct elf_s390_dyn_relocs *dyn_relocs;
+ struct elf_dyn_relocs *dyn_relocs;
+
+ /* 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 4
+ unsigned char tls_type;
+
+ /* For pointer equality reasons we might need to change the symbol
+ type from STT_GNU_IFUNC to STT_FUNC together with its value and
+ section entry. So after alloc_dynrelocs only these values should
+ be used. In order to check whether a symbol is IFUNC use
+ s390_is_ifunc_symbol_p. */
+ bfd_vma ifunc_resolver_address;
+ asection *ifunc_resolver_section;
+};
+
+#define elf_s390_hash_entry(ent) \
+ ((struct elf_s390_link_hash_entry *)(ent))
+
+/* This structure represents an entry in the local PLT list needed for
+ local IFUNC symbols. */
+struct plt_entry
+{
+ /* The section of the local symbol.
+ Set in relocate_section and used in finish_dynamic_sections. */
+ asection *sec;
+
+ union
+ {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } plt;
};
+/* NOTE: Keep this structure in sync with
+ the one declared in elf64-s390.c. */
+struct elf_s390_obj_tdata
+{
+ struct elf_obj_tdata root;
+
+ /* A local PLT is needed for ifunc symbols. */
+ struct plt_entry *local_plt;
+
+ /* TLS type for each local got entry. */
+ char *local_got_tls_type;
+};
+
+#define elf_s390_tdata(abfd) \
+ ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
+
+#define elf_s390_local_plt(abfd) \
+ (elf_s390_tdata (abfd)->local_plt)
+
+#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_DATA)
+
+static bfd_boolean
+elf_s390_mkobject (bfd *abfd)
+{
+ return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
+ S390_ELF_DATA);
+}
+
+static bfd_boolean
+elf_s390_object_p (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_31);
+}
+
/* s390 ELF linker hash table. */
struct elf_s390_link_hash_table
struct elf_link_hash_table elf;
/* Short-cuts to get to dynamic linker sections. */
- asection *sgot;
- asection *sgotplt;
- asection *srelgot;
- asection *splt;
- asection *srelplt;
- asection *sdynbss;
- asection *srelbss;
-
- /* Small local sym to section mapping cache. */
- struct sym_sec_cache sym_sec;
+ asection *irelifunc;
+
+ union
+ {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } tls_ldm_got;
+
+ /* Small local sym cache. */
+ struct sym_cache sym_cache;
};
/* Get the s390 ELF linker hash table from a link_info structure. */
#define elf_s390_hash_table(p) \
- ((struct elf_s390_link_hash_table *) ((p)->hash))
+ (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
+ == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
+
+#undef ELF64
+#include "elf-s390-common.c"
/* Create an entry in an s390 ELF linker hash table. */
static struct bfd_hash_entry *
-link_hash_newfunc (entry, table, string)
- struct bfd_hash_entry *entry;
- struct bfd_hash_table *table;
- const char *string;
+link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
{
/* Allocate the structure if it has not already been allocated by a
subclass. */
eh = (struct elf_s390_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
+ eh->gotplt_refcount = 0;
+ eh->tls_type = GOT_UNKNOWN;
+ eh->ifunc_resolver_address = 0;
+ eh->ifunc_resolver_section = NULL;
}
return entry;
/* Create an s390 ELF linker hash table. */
static struct bfd_link_hash_table *
-elf_s390_link_hash_table_create (abfd)
- bfd *abfd;
+elf_s390_link_hash_table_create (bfd *abfd)
{
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);
+ ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
if (ret == NULL)
return NULL;
- if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
+ if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
+ sizeof (struct elf_s390_link_hash_entry),
+ S390_ELF_DATA))
{
- bfd_release (abfd, ret);
+ free (ret);
return NULL;
}
- ret->sgot = NULL;
- ret->sgotplt = NULL;
- ret->srelgot = NULL;
- ret->splt = NULL;
- ret->srelplt = NULL;
- ret->sdynbss = NULL;
- ret->srelbss = NULL;
- ret->sym_sec.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 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");
- if (!htab->sgot || !htab->sgotplt)
- abort ();
-
- htab->srelgot = bfd_make_section (dynobj, ".rela.got");
- if (htab->srelgot == NULL
- || ! bfd_set_section_flags (dynobj, htab->srelgot,
- (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
- return false;
- 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 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 (dir, ind)
- struct elf_link_hash_entry *dir, *ind;
+elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
{
struct elf_s390_link_hash_entry *edir, *eind;
{
if (edir->dyn_relocs != NULL)
{
- struct elf_s390_dyn_relocs **pp;
- struct elf_s390_dyn_relocs *p;
-
- if (ind->root.type == bfd_link_hash_indirect)
- abort ();
+ struct elf_dyn_relocs **pp;
+ struct elf_dyn_relocs *p;
- /* Add reloc counts against the weak sym to the strong sym
+ /* 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;
+ struct elf_dyn_relocs *q;
for (q = edir->dyn_relocs; q != NULL; q = q->next)
if (q->sec == p->sec)
eind->dyn_relocs = NULL;
}
- _bfd_elf_link_hash_copy_indirect (dir, ind);
+ 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. */
+ if (dir->versioned != versioned_hidden)
+ dir->ref_dynamic |= ind->ref_dynamic;
+ dir->ref_regular |= ind->ref_regular;
+ dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
+ dir->needs_plt |= ind->needs_plt;
+ }
+ else
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+}
+
+static int
+elf_s390_tls_transition (struct bfd_link_info *info,
+ int r_type,
+ int is_local)
+{
+ if (bfd_link_pic (info))
+ return r_type;
+
+ switch (r_type)
+ {
+ case R_390_TLS_GD32:
+ case R_390_TLS_IE32:
+ if (is_local)
+ return R_390_TLS_LE32;
+ return R_390_TLS_IE32;
+ case R_390_TLS_GOTIE32:
+ if (is_local)
+ return R_390_TLS_LE32;
+ return R_390_TLS_GOTIE32;
+ case R_390_TLS_LDM32:
+ return R_390_TLS_LE32;
+ }
+
+ 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
-elf_s390_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+static bfd_boolean
+elf_s390_check_relocs (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
struct elf_s390_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
+ bfd_signed_vma *local_got_refcounts;
+ int tls_type, old_tls_type;
+ Elf_Internal_Sym *isym;
+
+ if (bfd_link_relocatable (info))
+ return TRUE;
- if (info->relocateable)
- return true;
+ BFD_ASSERT (is_s390_elf (abfd));
htab = elf_s390_hash_table (info);
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
sreloc = NULL;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
- unsigned long r_symndx;
+ unsigned int r_type;
+ unsigned int r_symndx;
struct elf_link_hash_entry *h;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
- (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
- bfd_archive_filename (abfd),
- r_symndx);
- return false;
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: 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];
-
- switch (ELF32_R_TYPE (rel->r_info))
{
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- /* This symbol requires a global offset table entry. */
- if (h != NULL)
- {
- h->got.refcount += 1;
- }
- else
+ /* A local symbol. */
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+ if (isym == NULL)
+ return FALSE;
+
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
{
- bfd_signed_vma *local_got_refcounts;
+ struct plt_entry *plt;
+
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+
+ if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
+ return FALSE;
- /* This is a global offset table entry for a local symbol. */
- local_got_refcounts = elf_local_got_refcounts (abfd);
if (local_got_refcounts == NULL)
{
- bfd_size_type size;
-
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_zalloc (abfd, size));
- if (local_got_refcounts == NULL)
- return false;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
+ if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
+ return FALSE;
+ local_got_refcounts = elf_local_got_refcounts (abfd);
}
- local_got_refcounts[r_symndx] += 1;
+ plt = elf_s390_local_plt (abfd);
+ plt[r_symndx].plt.refcount++;
}
- /* Fall through */
+ h = NULL;
+ }
+ 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;
+ }
- case R_390_GOTOFF:
+ /* Create got section and local_got_refcounts array if they
+ are needed. */
+ r_type = elf_s390_tls_transition (info,
+ ELF32_R_TYPE (rel->r_info),
+ h == NULL);
+ switch (r_type)
+ {
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOTENT:
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLTENT:
+ case R_390_TLS_GD32:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE32:
+ case R_390_TLS_IEENT:
+ case R_390_TLS_IE32:
+ case R_390_TLS_LDM32:
+ if (h == NULL
+ && local_got_refcounts == NULL)
+ {
+ if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
+ return FALSE;
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+ }
+ /* Fall through. */
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
case R_390_GOTPC:
- if (htab->sgot == NULL)
+ case R_390_GOTPCDBL:
+ if (htab->elf.sgot == NULL)
{
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
- if (!create_got_section (htab->elf.dynobj, info))
- return false;
+ if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
+ return FALSE;
+ }
+ }
+
+ if (h != NULL)
+ {
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
+ return FALSE;
+
+ /* Make sure an IFUNC symbol defined in a non-shared object
+ always gets a PLT slot. */
+ if (s390_is_ifunc_symbol_p (h) && h->def_regular)
+ {
+ /* The symbol is called by the dynamic loader in order
+ to resolve the relocation. So it is in fact also
+ referenced. */
+ h->ref_regular = 1;
+ h->needs_plt = 1;
}
+ }
+ switch (r_type)
+ {
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ /* These relocs do not need a GOT slot. They just load the
+ GOT pointer itself or address something else relative to
+ the GOT. Since the GOT pointer has been set up above we
+ are done. */
break;
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
+ break;
+ /* Fall through. */
- case R_390_PLT16DBL:
+ case R_390_PLT12DBL:
+ case R_390_PLT16DBL:
+ case R_390_PLT24DBL:
+ case R_390_PLT32DBL:
case R_390_PLT32:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
/* 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. */
+ 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;
+ creating a procedure linkage table entry. */
+ if (h != NULL)
+ {
+ 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_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)
+ {
+ ((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;
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.refcount += 1;
+ case R_390_TLS_LDM32:
+ htab->tls_ldm_got.refcount += 1;
break;
- case R_390_8:
- case R_390_16:
+ case R_390_TLS_IE32:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE32:
+ case R_390_TLS_IEENT:
+ if (bfd_link_pic (info))
+ 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_GOTENT:
+ case R_390_TLS_GD32:
+ /* 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_GD32:
+ tls_type = GOT_TLS_GD;
+ break;
+ case R_390_TLS_IE32:
+ case R_390_TLS_GOTIE32:
+ 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
+ {
+ 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_error_handler
+ /* xgettext:c-format */
+ (_("%pB: `%s' accessed both as normal and thread local symbol"),
+ abfd, h->root.root.string);
+ return FALSE;
+ }
+ if (old_tls_type > tls_type)
+ tls_type = old_tls_type;
+ }
+
+ if (old_tls_type != tls_type)
+ {
+ if (h != NULL)
+ elf_s390_hash_entry (h)->tls_type = tls_type;
+ else
+ elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
+ }
+
+ if (r_type != R_390_TLS_IE32)
+ break;
+ /* Fall through. */
+
+ case R_390_TLS_LE32:
+ /* For static linking and executables this reloc will be
+ calculated at linktime otherwise a TLS_TPOFF runtime
+ reloc will be generated. */
+ if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
+ break;
+
+ if (!bfd_link_pic (info))
+ break;
+ info->flags |= DF_STATIC_TLS;
+ /* Fall through. */
+
+ case R_390_8:
+ case R_390_16:
case R_390_32:
- case R_390_PC16:
- case R_390_PC16DBL:
+ case R_390_PC16:
+ case R_390_PC12DBL:
+ case R_390_PC16DBL:
+ case R_390_PC24DBL:
+ case R_390_PC32DBL:
case R_390_PC32:
- if (h != NULL && !info->shared)
+ if (h != NULL && bfd_link_executable (info))
{
/* If this reloc is in a read-only section, we might
need a copy reloc. We can't check reliably at this
sections have not yet been mapped to output sections.
Tentatively set the flag for now, and correct in
adjust_dynamic_symbol. */
- h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+ 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 (!bfd_link_pic (info))
+ {
+ /* 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
may need to keep relocations for symbols satisfied by a
dynamic library if we manage to avoid copy relocs for the
symbol. */
- if ((info->shared
+ if ((bfd_link_pic (info)
&& (sec->flags & SEC_ALLOC) != 0
&& ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
+ && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
&& ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
+ && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
+ && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
&& ELF32_R_TYPE (rel->r_info) != R_390_PC32)
|| (h != NULL
- && (! info->symbolic
+ && (! SYMBOLIC_BIND (info, h)
|| h->root.type == bfd_link_hash_defweak
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))))
- || (!info->shared
+ || !h->def_regular))))
+ || (ELIMINATE_COPY_RELOCS
+ && !bfd_link_pic (info)
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)))
+ || !h->def_regular)))
{
- struct elf_s390_dyn_relocs *p;
- struct elf_s390_dyn_relocs **head;
+ struct elf_dyn_relocs *p;
+ struct elf_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;
- bfd *dynobj;
-
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return false;
-
- if (strncmp (name, ".rela", 5) != 0
- || strcmp (bfd_get_section_name (abfd, sec),
- name + 5) != 0)
- {
- (*_bfd_error_handler)
- (_("%s: bad relocation section name `%s\'"),
- bfd_archive_filename (abfd), name);
- }
-
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
- dynobj = htab->elf.dynobj;
- sreloc = bfd_get_section_by_name (dynobj, name);
+ sreloc = _bfd_elf_make_dynamic_reloc_section
+ (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
+
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;
- }
- elf_section_data (sec)->sreloc = sreloc;
+ return FALSE;
}
/* If this is a global symbol, we count the number of
/* Track dynamic relocs needed for local syms too.
We really need local syms available to do this
easily. Oh well. */
-
asection *s;
- s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
- sec, r_symndx);
+ void *vpp;
+
+ 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)
- return false;
+ s = sec;
- head = ((struct elf_s390_dyn_relocs **)
- &elf_section_data (s)->local_dynrel);
+ vpp = &elf_section_data (s)->local_dynrel;
+ head = (struct elf_dyn_relocs **) vpp;
}
p = *head;
if (p == NULL || p->sec != sec)
{
bfd_size_type amt = sizeof *p;
- p = ((struct elf_s390_dyn_relocs *)
+
+ p = ((struct elf_dyn_relocs *)
bfd_alloc (htab->elf.dynobj, amt));
if (p == NULL)
- return false;
+ return FALSE;
p->next = *head;
*head = p;
p->sec = sec;
p->count += 1;
if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
+ || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
|| ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
+ || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
+ || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
|| ELF32_R_TYPE (rel->r_info) == R_390_PC32)
p->pc_count += 1;
}
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
- case R_390_GNU_VTINHERIT:
- if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return false;
- break;
+ 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_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
- break;
+ case R_390_GNU_VTENTRY:
+ if (!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 (ELF32_R_TYPE (rel->r_info))
- {
- case R_390_GNU_VTINHERIT:
- case R_390_GNU_VTENTRY:
- break;
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_390_GNU_VTINHERIT:
+ case R_390_GNU_VTENTRY:
+ return NULL;
+ }
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
- 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;
+/* 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). */
- default:
- break;
- }
- }
- }
- else
- {
- return bfd_section_from_elf_index (abfd, sym->st_shndx);
- }
+static void
+elf_s390_adjust_gotplt (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;
- return NULL;
+ 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;
}
-/* Update the got entry reference counts for the section being removed. */
+/* Find dynamic relocs for H that apply to read-only sections. */
-static boolean
-elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+static asection *
+readonly_dynrelocs (struct elf_link_hash_entry *h)
{
- 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;
+ struct elf_dyn_relocs *p;
- elf_section_data (sec)->local_dynrel = NULL;
+ for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *s = p->sec->output_section;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- 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 (ELF32_R_TYPE (rel->r_info))
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOTOFF:
- case R_390_GOTPC:
- r_symndx = ELF32_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)
- h->got.refcount -= 1;
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx] -= 1;
- }
- break;
-
- case R_390_8:
- case R_390_12:
- case R_390_16:
- case R_390_32:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC32:
- r_symndx = ELF32_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];
-
- if (!info->shared && h->plt.refcount > 0)
- h->plt.refcount -= 1;
-
- eh = (struct elf_s390_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
- {
- if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
- || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
- || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- break;
- }
- }
- break;
-
- case R_390_PLT16DBL:
- case R_390_PLT32:
- r_symndx = ELF32_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;
- }
-
- return true;
-}
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ return p->sec;
+ }
+ return NULL;
+}
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
change the definition to something the rest of the link can
understand. */
-static boolean
-elf_s390_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
+static bfd_boolean
+elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
{
struct elf_s390_link_hash_table *htab;
- struct elf_s390_link_hash_entry * eh;
- struct elf_s390_dyn_relocs *p;
- asection *s;
- unsigned int power_of_two;
+ asection *s, *srel;
+
+ /* STT_GNU_IFUNC symbol must go through PLT. */
+ if (s390_is_ifunc_symbol_p (h))
+ {
+ /* All local STT_GNU_IFUNC references must be treated as local
+ calls via local PLT. */
+ if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
+ {
+ bfd_size_type pc_count = 0, count = 0;
+ struct elf_dyn_relocs **pp;
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_dyn_relocs *p;
+
+ eh = (struct elf_s390_link_hash_entry *) h;
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ {
+ pc_count += p->pc_count;
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ count += p->count;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+
+ if (pc_count || count)
+ {
+ h->needs_plt = 1;
+ h->non_got_ref = 1;
+ if (h->plt.refcount <= 0)
+ h->plt.refcount = 1;
+ else
+ h->plt.refcount += 1;
+ }
+ }
+
+ if (h->plt.refcount <= 0)
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ }
+ return TRUE;
+ }
/* If this is a function, put it in the procedure linkage table. We
will fill in the contents of the procedure linkage table later
- (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 (h->plt.refcount <= 0
- || (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 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, or if all references were garbage collected. In
+ 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;
+ h->needs_plt = 0;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
- return true;
+ return TRUE;
}
else
/* It's possible that we incorrectly decided a .plt reloc was
/* 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->is_weakalias)
{
- 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;
+ struct elf_link_hash_entry *def = weakdef (h);
+ BFD_ASSERT (def->root.type == bfd_link_hash_defined);
+ h->root.u.def.section = def->root.u.def.section;
+ h->root.u.def.value = def->root.u.def.value;
+ if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ h->non_got_ref = def->non_got_ref;
+ return TRUE;
}
/* This is a reference to a symbol defined by a dynamic object which
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (info->shared)
- return true;
+ if (bfd_link_pic (info))
+ 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->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
- return true;
- }
-
- 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;
+ h->non_got_ref = 0;
+ return TRUE;
}
- /* If we didn't find any dynamic relocs in read-only sections, then
+ /* If we don'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)
+ if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
{
- h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
- return true;
+ h->non_got_ref = 0;
+ return TRUE;
}
/* We must allocate the symbol in our .dynbss section, which will
/* 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)
+ if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
{
- htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ s = htab->elf.sdynrelro;
+ srel = htab->elf.sreldynrelro;
}
-
- /* 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;
-
- /* Apply the required alignment. */
- s = htab->sdynbss;
- s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
+ else
{
- if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
- return false;
+ s = htab->elf.sdynbss;
+ srel = htab->elf.srelbss;
+ }
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
+ {
+ srel->size += sizeof (Elf32_External_Rela);
+ h->needs_copy = 1;
}
- /* 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;
-
- /* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
-
- return true;
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
-/* This is the condition under which elf_s390_finish_dynamic_symbol
- will be called from elflink.h. If elflink.h doesn't call our
- finish_dynamic_symbol routine, we'll need to do something about
- initializing any .plt and .got entries in elf_s390_relocate_section. */
-#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
- ((DYN) \
- && ((INFO)->shared \
- || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
- && ((H)->dynindx != -1 \
- || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
-
/* Allocate space in .plt, .got and associated reloc sections for
dynamic relocs. */
-static boolean
-allocate_dynrelocs (h, inf)
- struct elf_link_hash_entry *h;
- PTR inf;
+static bfd_boolean
+allocate_dynrelocs (struct elf_link_hash_entry *h, void * 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;
+ struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
+ struct elf_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- return true;
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
info = (struct bfd_link_info *) inf;
htab = elf_s390_hash_table (info);
- if (htab->elf.dynamic_sections_created
- && h->plt.refcount > 0)
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
+ here if it is defined and referenced in a non-shared object. */
+ if (s390_is_ifunc_symbol_p (h) && h->def_regular)
+ return s390_elf_allocate_ifunc_dyn_relocs (info, h);
+ else 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->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && !h->forced_local)
{
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
}
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
+ if (bfd_link_pic (info)
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
- asection *s = htab->splt;
+ asection *s = htab->elf.splt;
/* If this is the first .plt entry, make room for the special
first entry. */
- if (s->_raw_size == 0)
- s->_raw_size += PLT_FIRST_ENTRY_SIZE;
+ if (s->size == 0)
+ s->size += PLT_FIRST_ENTRY_SIZE;
- h->plt.offset = s->_raw_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->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ if (! bfd_link_pic (info)
+ && !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
}
/* Make room for this entry. */
- s->_raw_size += PLT_ENTRY_SIZE;
+ 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->_raw_size += GOT_ENTRY_SIZE;
+ htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
/* We also need to make an entry in the .rela.plt section. */
- htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
+ htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
}
else
{
- h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ 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->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 0;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
- if (h->got.refcount > 0)
+ /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
+ the binary, we can optimize a bit. IE32 and GOTIE32 get converted
+ to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
+ we can save the dynamic TLS relocation. */
+ if (h->got.refcount > 0
+ && !bfd_link_pic (info)
+ && 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->elf.sgot->size;
+ htab->elf.sgot->size += GOT_ENTRY_SIZE;
+ }
+ else
+ h->got.offset = (bfd_vma) -1;
+ }
+ else if (h->got.refcount > 0)
{
asection *s;
- boolean dyn;
+ 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->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && !h->forced_local)
{
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
}
- s = htab->sgot;
- h->got.offset = s->_raw_size;
- s->_raw_size += GOT_ENTRY_SIZE;
+ s = htab->elf.sgot;
+ h->got.offset = s->size;
+ s->size += GOT_ENTRY_SIZE;
+ /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
+ if (tls_type == GOT_TLS_GD)
+ s->size += GOT_ENTRY_SIZE;
dyn = htab->elf.dynamic_sections_created;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
- htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ /* R_390_TLS_IE32 needs one dynamic relocation,
+ R_390_TLS_GD32 needs one if local symbol and two if global. */
+ if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
+ || tls_type >= GOT_TLS_IE)
+ htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
+ else if (tls_type == GOT_TLS_GD)
+ htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
+ else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (bfd_link_pic (info)
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
+ htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
}
else
h->got.offset = (bfd_vma) -1;
- eh = (struct elf_s390_link_hash_entry *) h;
if (eh->dyn_relocs == NULL)
- return true;
+ return TRUE;
/* In the shared -Bsymbolic case, discard space allocated for
dynamic pc-relative relocs against symbols which turn out to be
space for pc-relative relocs that have become local due to symbol
visibility changes. */
- if (info->shared)
+ if (bfd_link_pic (info))
{
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
- && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
- || info->symbolic))
+ if (SYMBOL_CALLS_LOCAL (info, h))
{
- struct elf_s390_dyn_relocs **pp;
+ struct elf_dyn_relocs **pp;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
{
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
+ || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
+ 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
+ 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->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
- && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ 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->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && !h->forced_local)
{
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
}
/* If that succeeded, we know we'll be keeping all the
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
- sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
+
+ sreloc->size += p->count * sizeof (Elf32_External_Rela);
}
- return true;
+ return TRUE;
}
-/* Find any dynamic relocs that apply to read-only sections. */
+/* Set DF_TEXTREL if we find any dynamic relocs that apply to
+ read-only sections. */
-static boolean
-readonly_dynrelocs (h, inf)
- struct elf_link_hash_entry *h;
- PTR inf;
+static bfd_boolean
+maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
{
- struct elf_s390_link_hash_entry *eh;
- struct elf_s390_dyn_relocs *p;
+ asection *sec;
- eh = (struct elf_s390_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *s = p->sec->output_section;
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- {
- struct bfd_link_info *info = (struct bfd_link_info *) inf;
+ sec = readonly_dynrelocs (h);
+ if (sec != NULL)
+ {
+ struct bfd_link_info *info = (struct bfd_link_info *) info_p;
- info->flags |= DF_TEXTREL;
+ info->flags |= DF_TEXTREL;
+ info->callbacks->minfo
+ (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
+ sec->owner, h->root.root.string, sec);
- /* Not an error, just cut short the traversal. */
- return false;
- }
+ /* Not an error, just cut short the traversal. */
+ return FALSE;
}
- return true;
+ return TRUE;
}
/* Set the sizes of the dynamic sections. */
-static boolean
-elf_s390_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
+static bfd_boolean
+elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
{
struct elf_s390_link_hash_table *htab;
bfd *dynobj;
asection *s;
- boolean relocs;
+ bfd_boolean relocs;
bfd *ibfd;
htab = elf_s390_hash_table (info);
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
+ if (bfd_link_executable (info) && !info->nointerp)
{
- s = bfd_get_section_by_name (dynobj, ".interp");
+ s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
abort ();
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
/* Set up .got offsets for local syms, and space for local dynamic
relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
+ char *local_tls_type;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srela;
+ struct plt_entry *local_plt;
+ unsigned int i;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
+ if (! is_s390_elf (ibfd))
continue;
for (s = ibfd->sections; s != NULL; s = s->next)
{
- struct elf_s390_dyn_relocs *p;
+ struct elf_dyn_relocs *p;
- for (p = *((struct elf_s390_dyn_relocs **)
- &elf_section_data (s)->local_dynrel);
- p != NULL;
- p = p->next)
+ for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
{
if (!bfd_is_abs_section (p->sec)
&& bfd_is_abs_section (p->sec->output_section))
linker script /DISCARD/, so we'll be discarding
the relocs too. */
}
- else
+ else if (p->count != 0)
{
srela = elf_section_data (p->sec)->sreloc;
- srela->_raw_size += p->count * sizeof (Elf32_External_Rela);
+ srela->size += p->count * sizeof (Elf32_External_Rela);
+ if ((p->sec->output_section->flags & SEC_READONLY) != 0)
+ info->flags |= DF_TEXTREL;
}
}
}
if (!local_got)
continue;
- symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (ibfd);
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
- s = htab->sgot;
- srela = htab->srelgot;
- for (; local_got < end_local_got; ++local_got)
+ local_tls_type = elf_s390_local_got_tls_type (ibfd);
+ s = htab->elf.sgot;
+ srela = htab->elf.srelgot;
+ for (; local_got < end_local_got; ++local_got, ++local_tls_type)
{
if (*local_got > 0)
{
- *local_got = s->_raw_size;
- s->_raw_size += GOT_ENTRY_SIZE;
- if (info->shared)
- srela->_raw_size += sizeof (Elf32_External_Rela);
+ *local_got = s->size;
+ s->size += GOT_ENTRY_SIZE;
+ if (*local_tls_type == GOT_TLS_GD)
+ s->size += GOT_ENTRY_SIZE;
+ if (bfd_link_pic (info))
+ srela->size += sizeof (Elf32_External_Rela);
}
else
*local_got = (bfd_vma) -1;
}
+ local_plt = elf_s390_local_plt (ibfd);
+ for (i = 0; i < symtab_hdr->sh_info; i++)
+ {
+ if (local_plt[i].plt.refcount > 0)
+ {
+ local_plt[i].plt.offset = htab->elf.iplt->size;
+ htab->elf.iplt->size += PLT_ENTRY_SIZE;
+ htab->elf.igotplt->size += GOT_ENTRY_SIZE;
+ htab->elf.irelplt->size += RELA_ENTRY_SIZE;
+ }
+ else
+ local_plt[i].plt.offset = (bfd_vma) -1;
+ }
+ }
+
+ if (htab->tls_ldm_got.refcount > 0)
+ {
+ /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
+ relocs. */
+ htab->tls_ldm_got.offset = htab->elf.sgot->size;
+ htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
+ htab->elf.srelgot->size += sizeof (Elf32_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);
+ elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
/* We now have determined the sizes of the various dynamic sections.
Allocate memory for them. */
- relocs = false;
+ 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)
+ if (s == htab->elf.splt
+ || s == htab->elf.sgot
+ || s == htab->elf.sgotplt
+ || s == htab->elf.sdynbss
+ || s == htab->elf.sdynrelro
+ || s == htab->elf.iplt
+ || s == htab->elf.igotplt
+ || s == htab->irelifunc)
{
/* Strip this section if we don't need it; see the
comment below. */
}
- else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
+ else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
{
- if (s->_raw_size != 0 && s != htab->srelplt)
- relocs = true;
+ if (s->size != 0)
+ relocs = TRUE;
/* We use the reloc_count field as a counter if we need
to copy relocs into the output file. */
continue;
}
- if (s->_raw_size == 0)
+ if (s->size == 0)
{
/* If we don't need this section, strip it from the
output file. This is to handle .rela.bss and
function which decides whether anything needs to go
into these sections. */
- _bfd_strip_section_from_output (info, s);
+ s->flags |= SEC_EXCLUDE;
continue;
}
+ 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->_raw_size);
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
if (s->contents == NULL)
- return false;
+ return FALSE;
}
if (htab->elf.dynamic_sections_created)
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_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (! info->shared)
+ if (bfd_link_executable (info))
{
if (!add_dynamic_entry (DT_DEBUG, 0))
- return false;
+ return FALSE;
}
- if (htab->splt->_raw_size != 0)
+ if (htab->elf.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;
+ return FALSE;
}
if (relocs)
- {
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
- return false;
+ {
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
+ return FALSE;
/* If any dynamic relocs apply to a read-only section,
then we need a DT_TEXTREL entry. */
- elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
+ if ((info->flags & DF_TEXTREL) == 0)
+ elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
if ((info->flags & DF_TEXTREL) != 0)
{
if (!add_dynamic_entry (DT_TEXTREL, 0))
- return false;
+ return FALSE;
}
}
}
#undef add_dynamic_entry
- return true;
+ 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 (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 (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 (bfd *input_bfd,
+ asection *input_section,
+ Elf_Internal_Rela *rel)
+{
+ reloc_howto_type *howto;
+
+ howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
+ input_bfd,
+ input_section,
+ (uint64_t) rel->r_offset,
+ howto->name);
+ bfd_set_error (bfd_error_bad_value);
}
/* Relocate a 390 ELF section. */
-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;
+static bfd_boolean
+elf_s390_relocate_section (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;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
+ if (!is_s390_elf (input_bfd))
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
+ }
+
htab = elf_s390_hash_table (info);
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
sym_hashes = elf_sym_hashes (input_bfd);
local_got_offsets = elf_local_got_offsets (input_bfd);
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
- int r_type;
+ unsigned int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
asection *sec;
bfd_vma off;
bfd_vma relocation;
- boolean unresolved_reloc;
+ bfd_boolean unresolved_reloc;
bfd_reloc_status_type r;
+ int tls_type;
+ asection *base_got = htab->elf.sgot;
+ bfd_boolean resolved_to_zero;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_390_GNU_VTINHERIT
- || r_type == (int) R_390_GNU_VTENTRY)
- continue;
- if (r_type < 0 || r_type >= (int) R_390_max)
+ || r_type == (int) R_390_GNU_VTENTRY)
+ continue;
+ if (r_type >= (int) R_390_max)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
- howto = elf_howto_table + r_type;
+ howto = elf_howto_table + r_type;
r_symndx = ELF32_R_SYM (rel->r_info);
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- 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)
- {
- 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;
- }
- }
-
- continue;
- }
-
- /* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
- unresolved_reloc = false;
+ 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);
+ if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
+ {
+ struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
+ if (local_plt == NULL)
+ return FALSE;
+
+ /* Address of the PLT slot. */
+ relocation = (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + local_plt[r_symndx].plt.offset);
+
+ switch (r_type)
+ {
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ relocation -= htab->elf.sgot->output_section->vma;
+ break;
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLTENT:
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOTENT:
+ {
+ /* Write the PLT slot address into the GOT slot. */
+ bfd_put_32 (output_bfd, relocation,
+ htab->elf.sgot->contents +
+ local_got_offsets[r_symndx]);
+ relocation = (local_got_offsets[r_symndx] +
+ htab->elf.sgot->output_offset);
+
+ if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
+ relocation += htab->elf.sgot->output_section->vma;
+ break;
+ }
+ default:
+ break;
+ }
+ /* The output section is needed later in
+ finish_dynamic_section when creating the dynamic
+ relocation. */
+ local_plt[r_symndx].sec = sec;
+ goto do_relocation;
+ }
+ else
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
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;
+ bfd_boolean warned ATTRIBUTE_UNUSED;
+ bfd_boolean ignored ATTRIBUTE_UNUSED;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
+ }
+
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
+ if (bfd_link_relocatable (info))
+ continue;
+
+ resolved_to_zero = (h != NULL
+ && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
+
+ switch (r_type)
+ {
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
+ case R_390_GOTPLT32:
+ 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)
{
- sec = h->root.u.def.section;
- if (sec->output_section == NULL)
+ bfd_vma plt_index;
+
+ if (s390_is_ifunc_symbol_p (h))
{
- /* Set a flag that will be cleared later if we find a
- relocation value for this symbol. output_section
- is typically NULL for symbols satisfied by a shared
- library. */
- unresolved_reloc = true;
- relocation = 0;
+ plt_index = h->plt.offset / PLT_ENTRY_SIZE;
+ relocation = (plt_index * GOT_ENTRY_SIZE +
+ htab->elf.igotplt->output_offset);
+ if (r_type == R_390_GOTPLTENT)
+ relocation += htab->elf.igotplt->output_section->vma;
}
else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- 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
- {
- 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;
+ {
+ /* 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;
+ if (r_type == R_390_GOTPLTENT)
+ relocation += htab->elf.sgot->output_section->vma;
+ }
+ unresolved_reloc = FALSE;
+
}
- }
+ /* Fall through. */
- switch (r_type)
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- if (htab->sgot == NULL)
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOTENT:
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ if (base_got == NULL)
abort ();
- if (h != NULL)
- {
- boolean dyn;
+ if (h != NULL)
+ {
+ bfd_boolean dyn;
- off = h->got.offset;
+ off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
- || (info->shared
- && (info->symbolic
- || h->dynindx == -1
- || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
- && (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
- {
+
+ if (s390_is_ifunc_symbol_p (h))
+ {
+ BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
+ if (off == (bfd_vma)-1)
+ {
+ /* No explicit GOT usage so redirect to the
+ got.iplt slot. */
+ base_got = htab->elf.igotplt;
+ off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
+ }
+ else
+ {
+ /* Explicit GOT slots must contain the address
+ of the PLT slot. This will be handled in
+ finish_dynamic_symbol. */
+ }
+ }
+ else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
+ bfd_link_pic (info),
+ h)
+ || (bfd_link_pic (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ || (ELF_ST_VISIBILITY (h->other)
+ && h->root.type == bfd_link_hash_undefweak))
+
+ {
+ /* 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_32 (output_bfd, relocation,
- htab->sgot->contents + off);
- h->got.offset |= 1;
- }
- }
+ base_got->contents + off);
+ h->got.offset |= 1;
+ }
+
+ if ((h->def_regular
+ && bfd_link_pic (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ /* lrl rx,sym@GOTENT -> larl rx, sym */
+ && ((r_type == R_390_GOTENT
+ && (bfd_get_16 (input_bfd,
+ contents + rel->r_offset - 2)
+ & 0xff0f) == 0xc40d)
+ /* ly rx, sym@GOT(r12) -> larl rx, sym */
+ || (r_type == R_390_GOT20
+ && (bfd_get_32 (input_bfd,
+ contents + rel->r_offset - 2)
+ & 0xff00f000) == 0xe300c000
+ && bfd_get_8 (input_bfd,
+ contents + rel->r_offset + 3) == 0x58)))
+ {
+ unsigned short new_insn =
+ (0xc000 | (bfd_get_8 (input_bfd,
+ contents + rel->r_offset - 1) & 0xf0));
+ bfd_put_16 (output_bfd, new_insn,
+ contents + rel->r_offset - 2);
+ r_type = R_390_PC32DBL;
+ rel->r_addend = 2;
+ howto = elf_howto_table + r_type;
+ relocation = h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset;
+ goto do_relocation;
+ }
+ }
else
- unresolved_reloc = false;
- }
- 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 4. 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_32 (output_bfd, relocation,
- htab->sgot->contents + off);
-
- if (info->shared)
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
- Elf32_External_Rela *loc;
-
- srelgot = htab->srelgot;
+ off = local_got_offsets[r_symndx];
+
+ /* The offset must always be a multiple of 4. 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_32 (output_bfd, relocation,
+ htab->elf.sgot->contents + off);
+
+ if (bfd_link_pic (info))
+ {
+ asection *srelgot;
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ srelgot = htab->elf.srelgot;
if (srelgot == NULL)
abort ();
- outrel.r_offset = (htab->sgot->output_section->vma
- + htab->sgot->output_offset
- + off);
- outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
+ outrel.r_offset = (htab->elf.sgot->output_section->vma
+ + htab->elf.sgot->output_offset
+ + off);
+ outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
outrel.r_addend = relocation;
- loc = (Elf32_External_Rela *) srelgot->contents;
- loc += srelgot->reloc_count++;
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- }
+ loc = srelgot->contents;
+ loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ }
- local_got_offsets[r_symndx] |= 1;
- }
- }
+ local_got_offsets[r_symndx] |= 1;
+ }
+ }
if (off >= (bfd_vma) -2)
abort ();
- relocation = htab->sgot->output_offset + off;
- break;
-
- case R_390_GOTOFF:
- /* 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:
- /* 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:
- /* 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_8:
- case R_390_16:
- case R_390_32:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC32:
- /* r_symndx will be zero only for relocs against symbols
- from removed linkonce sections, or sections discarded by
- a linker script. */
- if (r_symndx == 0
- || (input_section->flags & SEC_ALLOC) == 0)
+ relocation = base_got->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 += base_got->output_section->vma;
+
+ break;
+
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ /* Relocation is relative to the start of the global offset
+ table. */
+
+ if (h != NULL
+ && s390_is_ifunc_symbol_p (h)
+ && h->def_regular
+ && !bfd_link_executable (info))
+ {
+ relocation = (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + h->plt.offset
+ - htab->elf.sgot->output_section->vma);
+ goto do_relocation;
+ }
+
+ /* Note that sgot->output_offset is not involved in this
+ calculation. We always want the start of .got. If we
+ defined _GLOBAL_OFFSET_TABLE in a different way, as is
+ permitted by the ABI, we might have to change this
+ calculation. */
+ relocation -= htab->elf.sgot->output_section->vma;
+ break;
+
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ /* Use global offset table as symbol value. */
+ relocation = htab->elf.sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_PLT12DBL:
+ case R_390_PLT16DBL:
+ case R_390_PLT24DBL:
+ case R_390_PLT32DBL:
+ case R_390_PLT32:
+ /* 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->elf.splt == NULL && htab->elf.iplt == NULL))
+ {
+ /* We didn't make a PLT entry for this symbol. This
+ happens when statically linking PIC code, or when
+ using -Bsymbolic. */
+ break;
+ }
+
+ if (s390_is_ifunc_symbol_p (h))
+ relocation = (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + h->plt.offset);
+ else
+ relocation = (htab->elf.splt->output_section->vma
+ + htab->elf.splt->output_offset
+ + h->plt.offset);
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ /* 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->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
+ {
+ relocation -= htab->elf.sgot->output_section->vma;
+ break;
+ }
+
+ if (s390_is_ifunc_symbol_p (h))
+ relocation = (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + h->plt.offset
+ - htab->elf.sgot->output_section->vma);
+ else
+ relocation = (htab->elf.splt->output_section->vma
+ + htab->elf.splt->output_offset
+ + h->plt.offset
+ - htab->elf.sgot->output_section->vma);
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_PC16:
+ case R_390_PC12DBL:
+ case R_390_PC16DBL:
+ case R_390_PC24DBL:
+ case R_390_PC32DBL:
+ case R_390_PC32:
+ if (h != NULL
+ && s390_is_ifunc_symbol_p (h)
+ && h->def_regular
+ && !bfd_link_executable (info))
+ {
+ /* This will not work our if the function does not
+ happen to set up the GOT pointer for some other
+ reason. 31 bit PLT entries require r12 to hold the
+ GOT pointer.
+ FIXME: Implement an errorcheck.
+ NOTE: It will work when brasl is not available
+ (e.g. with -m31 -march=g5) since a local function
+ call then does use GOTOFF which implies r12 being set
+ up. */
+ relocation = (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + h ->plt.offset);
+ goto do_relocation;
+ }
+ /* Fall through. */
+
+ case R_390_8:
+ case R_390_16:
+ case R_390_32:
+ if ((input_section->flags & SEC_ALLOC) == 0)
break;
- if ((info->shared
+ if (h != NULL
+ && s390_is_ifunc_symbol_p (h)
+ && h->def_regular)
+ {
+ if (!bfd_link_pic (info))
+ {
+ /* For a non-shared object STT_GNU_IFUNC symbol must
+ go through PLT. */
+ relocation = (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + h ->plt.offset);
+ goto do_relocation;
+ }
+ else
+ {
+ /* For shared objects a runtime relocation is needed. */
+
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+
+ /* Need a dynamic relocation to get the real function
+ address. */
+ outrel.r_offset = _bfd_elf_section_offset (output_bfd,
+ info,
+ input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1
+ || outrel.r_offset == (bfd_vma) -2)
+ abort ();
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (h->dynindx == -1
+ || h->forced_local
+ || bfd_link_executable (info))
+ {
+ /* This symbol is resolved locally. */
+ outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
+ outrel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
+ outrel.r_addend = 0;
+ }
+
+ sreloc = htab->elf.irelifunc;
+ elf_append_rela (output_bfd, sreloc, &outrel);
+
+ /* 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. For an
+ internal symbol, we have updated addend. */
+ continue;
+ }
+ }
+
+ if ((bfd_link_pic (info)
+ && (h == NULL
+ || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && !resolved_to_zero)
+ || h->root.type != bfd_link_hash_undefweak)
&& ((r_type != R_390_PC16
+ && r_type != R_390_PC12DBL
&& r_type != R_390_PC16DBL
+ && r_type != R_390_PC24DBL
+ && r_type != R_390_PC32DBL
&& r_type != R_390_PC32)
- || (h != NULL
- && h->dynindx != -1
- && (! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))))
- || (!info->shared
+ || !SYMBOL_CALLS_LOCAL (info, h)))
+ || (ELIMINATE_COPY_RELOCS
+ && !bfd_link_pic (info)
&& h != NULL
&& h->dynindx != -1
- && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
- && (((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ && !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;
- boolean skip, relocate;
+ {
+ Elf_Internal_Rela outrel;
+ bfd_boolean skip, relocate;
asection *sreloc;
- Elf32_External_Rela *loc;
+ bfd_byte *loc;
/* When generating a shared object, these relocations
are copied into the output file to be resolved at run
time. */
- skip = false;
+ 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;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
-
- if (skip)
- {
- memset (&outrel, 0, sizeof outrel);
- relocate = false;
- }
- else if (h != NULL
+ 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_PC12DBL
|| r_type == R_390_PC16DBL
+ || r_type == R_390_PC24DBL
+ || r_type == R_390_PC32DBL
|| r_type == R_390_PC32
- || !info->shared
- || !info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- {
- relocate = false;
- outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
+ || !bfd_link_pic (info)
+ || !SYMBOLIC_BIND (info, h)
+ || !h->def_regular))
+ {
+ outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
- }
- else
- {
+ }
+ else
+ {
/* This symbol is local, or marked to become local. */
- relocate = true;
- outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
outrel.r_addend = relocation + rel->r_addend;
- }
+ if (r_type == R_390_32)
+ {
+ relocate = TRUE;
+ outrel.r_info = ELF32_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 = ELF32_R_INFO (sindx, r_type);
+ }
+ }
sreloc = elf_section_data (input_section)->sreloc;
if (sreloc == NULL)
abort ();
- loc = (Elf32_External_Rela *) sreloc->contents;
- loc += sreloc->reloc_count++;
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- /* If this reloc is against an external symbol, we do
- not want to fiddle with the addend. Otherwise, we
- need to include the symbol value so that it becomes
- an addend for the dynamic reloc. */
- if (! relocate)
- continue;
- }
+ /* 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;
- }
+ /* Relocations for tls literal pool entries. */
+ case R_390_TLS_IE32:
+ if (bfd_link_pic (info))
+ {
+ 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 = ELF32_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 (Elf32_External_Rela);
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ }
+ /* Fall through. */
+
+ case R_390_TLS_GD32:
+ case R_390_TLS_GOTIE32:
+ 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 (!bfd_link_pic (info)
+ && h->dynindx == -1
+ && tls_type >= GOT_TLS_IE)
+ r_type = R_390_TLS_LE32;
+ }
+ if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
+ r_type = R_390_TLS_IE32;
+
+ if (r_type == R_390_TLS_LE32)
+ {
+ /* This relocation gets optimized away by the local exec
+ access optimization. */
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_32 (output_bfd, -tpoff (info, relocation),
+ contents + rel->r_offset);
+ continue;
+ }
+
+ if (htab->elf.sgot == NULL)
+ abort ();
+
+ if (h != NULL)
+ off = h->got.offset;
+ else
+ {
+ if (local_got_offsets == NULL)
+ abort ();
+
+ off = local_got_offsets[r_symndx];
+ }
+
+ emit_tls_relocs:
+
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ int dr_type, indx;
+
+ if (htab->elf.srelgot == NULL)
+ abort ();
+
+ outrel.r_offset = (htab->elf.sgot->output_section->vma
+ + htab->elf.sgot->output_offset + off);
+
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+ if (r_type == R_390_TLS_GD32)
+ 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 = ELF32_R_INFO (indx, dr_type);
+ loc = htab->elf.srelgot->contents;
+ loc += htab->elf.srelgot->reloc_count++
+ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+
+ if (r_type == R_390_TLS_GD32)
+ {
+ if (indx == 0)
+ {
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_32 (output_bfd,
+ relocation - dtpoff_base (info),
+ htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
+ }
+ else
+ {
+ outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
+ outrel.r_offset += GOT_ENTRY_SIZE;
+ outrel.r_addend = 0;
+ htab->elf.srelgot->reloc_count++;
+ loc += sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+ }
+
+ if (h != NULL)
+ h->got.offset |= 1;
+ else
+ local_got_offsets[r_symndx] |= 1;
+ }
+
+ if (off >= (bfd_vma) -2)
+ abort ();
+ if (r_type == ELF32_R_TYPE (rel->r_info))
+ {
+ relocation = htab->elf.sgot->output_offset + off;
+ if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
+ relocation += htab->elf.sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ }
+ else
+ {
+ bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
+ contents + rel->r_offset);
+ continue;
+ }
+ break;
+
+ 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 (bfd_link_pic (info))
+ goto emit_tls_relocs;
+ }
+ else
+ {
+ off = h->got.offset;
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+ if (bfd_link_pic (info)
+ || h->dynindx != -1
+ || tls_type < GOT_TLS_IE)
+ goto emit_tls_relocs;
+ }
+
+ if (htab->elf.sgot == NULL)
+ abort ();
+
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_32 (output_bfd, -tpoff (info, relocation),
+ htab->elf.sgot->contents + off);
+ relocation = htab->elf.sgot->output_offset + off;
+ if (r_type == R_390_TLS_IEENT)
+ relocation += htab->elf.sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_TLS_LDM32:
+ if (! bfd_link_pic (info))
+ /* The literal pool entry this relocation refers to gets ignored
+ by the optimized code of the local exec model. Do nothing
+ and the value will turn out zero. */
+ continue;
+
+ if (htab->elf.sgot == NULL)
+ abort ();
+
+ off = htab->tls_ldm_got.offset;
+ if (off & 1)
+ off &= ~1;
+ else
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ if (htab->elf.srelgot == NULL)
+ abort ();
+
+ outrel.r_offset = (htab->elf.sgot->output_section->vma
+ + htab->elf.sgot->output_offset + off);
+
+ bfd_put_32 (output_bfd, 0,
+ htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
+ outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
+ outrel.r_addend = 0;
+ loc = htab->elf.srelgot->contents;
+ loc += htab->elf.srelgot->reloc_count++
+ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ htab->tls_ldm_got.offset |= 1;
+ }
+ relocation = htab->elf.sgot->output_offset + off;
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_TLS_LE32:
+ if (bfd_link_dll (info))
+ {
+ /* 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 = ELF32_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 (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+ else
+ {
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_32 (output_bfd, -tpoff (info, relocation),
+ contents + rel->r_offset);
+ }
+ continue;
+
+ case R_390_TLS_LDO32:
+ if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
+ 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)
+ {
+ if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
+ {
+ /* IE->LE transition. Four valid cases:
+ l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
+ l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
+ l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
+ l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
+ unsigned int insn, ry;
+
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ if ((insn & 0xff00f000) == 0x58000000)
+ /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
+ ry = (insn & 0x000f0000);
+ else if ((insn & 0xff0f0000) == 0x58000000)
+ /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
+ ry = (insn & 0x0000f000) << 4;
+ else if ((insn & 0xff00f000) == 0x5800c000)
+ /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
+ ry = (insn & 0x000f0000);
+ else if ((insn & 0xff0f0000) == 0x580c0000)
+ /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
+ ry = (insn & 0x0000f000) << 4;
+ else
+ {
+ invalid_tls_insn (input_bfd, input_section, rel);
+ return FALSE;
+ }
+ insn = 0x18000700 | (insn & 0x00f00000) | ry;
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ }
+ }
+ else if (r_type == R_390_TLS_GDCALL)
+ {
+ unsigned int insn;
+
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ if ((insn & 0xff000fff) != 0x4d000000 &&
+ (insn & 0xffff0000) != 0xc0e50000 &&
+ (insn & 0xff000000) != 0x0d000000)
+ {
+ invalid_tls_insn (input_bfd, input_section, rel);
+ return FALSE;
+ }
+ if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
+ {
+ if ((insn & 0xff000000) == 0x0d000000)
+ {
+ /* GD->LE transition.
+ basr rx, ry -> nopr r7 */
+ insn = 0x07070000 | (insn & 0xffff);
+ }
+ else if ((insn & 0xff000000) == 0x4d000000)
+ {
+ /* GD->LE transition.
+ bas %r14,0(%rx,%r13) -> bc 0,0 */
+ insn = 0x47000000;
+ }
+ else
+ {
+ /* GD->LE transition.
+ brasl %r14,_tls_get_offset@plt -> brcl 0,. */
+ insn = 0xc0040000;
+ bfd_put_16 (output_bfd, 0x0000,
+ contents + rel->r_offset + 4);
+ }
+ }
+ else
+ {
+ /* If basr is used in the pic case to invoke
+ _tls_get_offset, something went wrong before. */
+ if ((insn & 0xff000000) == 0x0d000000)
+ {
+ invalid_tls_insn (input_bfd, input_section, rel);
+ return FALSE;
+ }
+
+ if ((insn & 0xff000000) == 0x4d000000)
+ {
+ /* GD->IE transition.
+ bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
+ insn = 0x5822c000;
+ }
+ else
+ {
+ /* GD->IE transition.
+ brasl %r14,__tls_get_addr@plt ->
+ l %r2,0(%r2,%r12) ; bcr 0,0 */
+ insn = 0x5822c000;
+ bfd_put_16 (output_bfd, 0x0700,
+ contents + rel->r_offset + 4);
+ }
+ }
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ }
+ else if (r_type == R_390_TLS_LDCALL)
+ {
+ if (!bfd_link_pic (info))
+ {
+ unsigned int insn;
+
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ if ((insn & 0xff000fff) != 0x4d000000 &&
+ (insn & 0xffff0000) != 0xc0e50000 &&
+ (insn & 0xff000000) != 0x0d000000)
+ {
+ invalid_tls_insn (input_bfd, input_section, rel);
+ return FALSE;
+ }
+
+ if ((insn & 0xff000000) == 0x0d000000)
+ {
+ /* LD->LE transition.
+ basr rx, ry -> nopr r7 */
+ insn = 0x07070000 | (insn & 0xffff);
+ }
+ else if ((insn & 0xff000000) == 0x4d000000)
+ {
+ /* LD->LE transition.
+ bas %r14,0(%rx,%r13) -> bc 0,0 */
+ insn = 0x47000000;
+ }
+ else
+ {
+ /* LD->LE transition.
+ brasl %r14,__tls_get_offset@plt -> brcl 0,. */
+ insn = 0xc0040000;
+ bfd_put_16 (output_bfd, 0x0000,
+ contents + rel->r_offset + 4);
+ }
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ }
+ }
+ continue;
+
+ default:
+ break;
+ }
+
+ /* 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
- && !(info->shared
- && (input_section->flags & SEC_DEBUGGING) != 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
- (*_bfd_error_handler)
- (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
- bfd_archive_filename (input_bfd),
- bfd_get_section_name (input_bfd, input_section),
- (long) rel->r_offset,
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && h->def_dynamic)
+ && _bfd_elf_section_offset (output_bfd, info, input_section,
+ rel->r_offset) != (bfd_vma) -1)
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): "
+ "unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (uint64_t) rel->r_offset,
+ howto->name,
h->root.root.string);
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend);
+ do_relocation:
+
+ /* When applying a 24 bit reloc we need to start one byte
+ earlier. Otherwise the 32 bit get/put bfd operations might
+ access a byte after the actual section. */
+ if (r_type == R_390_PC24DBL
+ || r_type == R_390_PLT24DBL)
+ rel->r_offset--;
+
+ if (r_type == R_390_20
+ || r_type == R_390_GOT20
+ || r_type == R_390_GOTPLT20
+ || r_type == R_390_TLS_GOTIE20)
+ {
+ 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)
{
symtab_hdr->sh_link,
sym->st_name);
if (name == NULL)
- return false;
+ return FALSE;
if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
+ name = bfd_section_name (sec);
}
if (r == bfd_reloc_overflow)
- {
-
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- }
+ (*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
else
{
- (*_bfd_error_handler)
- (_("%s(%s+0x%lx): reloc against `%s': error %d"),
- bfd_archive_filename (input_bfd),
- bfd_get_section_name (input_bfd, input_section),
- (long) rel->r_offset, name, (int) r);
- return false;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
+ input_bfd, input_section,
+ (uint64_t) rel->r_offset, name, (int) r);
+ return FALSE;
}
}
}
- return true;
+ return TRUE;
+}
+
+/* Generate the PLT slots together with the dynamic relocations needed
+ for IFUNC symbols. */
+
+static void
+elf_s390_finish_ifunc_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ struct elf_s390_link_hash_table *htab,
+ bfd_vma iplt_offset,
+ bfd_vma resolver_address)
+{
+ bfd_vma iplt_index;
+ bfd_vma got_offset;
+ bfd_vma igotiplt_offset;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
+ asection *plt, *gotplt, *relplt;
+ bfd_vma relative_offset;
+
+ if (htab->elf.iplt == NULL
+ || htab->elf.igotplt == NULL
+ || htab->elf.irelplt == NULL)
+ abort ();
+
+ gotplt = htab->elf.igotplt;
+ relplt = htab->elf.irelplt;
+
+ /* Index of the PLT slot within iplt section. */
+ iplt_index = iplt_offset / PLT_ENTRY_SIZE;
+ plt = htab->elf.iplt;
+ /* Offset into the igot.plt section. */
+ igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
+ /* Offset into the got section. */
+ got_offset = igotiplt_offset + gotplt->output_offset;
+
+ /* S390 uses halfwords for relative branch calc! */
+ relative_offset = - (plt->output_offset +
+ (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
+ /* If offset is > 32768, branch to a previous branch
+ 390 can only handle +-64 K jumps. */
+ if ( -32768 > (int) relative_offset )
+ relative_offset
+ = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
+
+ /* Fill in the entry in the procedure linkage table. */
+ if (!bfd_link_pic (info))
+ {
+ memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Adjust jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ plt->contents + iplt_offset + 20);
+
+ /* Push the GOT offset field. */
+ bfd_put_32 (output_bfd,
+ (gotplt->output_section->vma
+ + got_offset),
+ plt->contents + iplt_offset + 24);
+ }
+ else if (got_offset < 4096)
+ {
+ /* The GOT offset is small enough to be used directly as
+ displacement. */
+ memcpy (plt->contents + iplt_offset,
+ elf_s390_plt_pic12_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Put in the GOT offset as displacement value. The 0xc000
+ value comes from the first word of the plt entry. Look
+ at the elf_s390_plt_pic16_entry content. */
+ bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
+ plt->contents + iplt_offset + 2);
+
+ /* Adjust the jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ plt->contents + iplt_offset + 20);
+ }
+ else if (got_offset < 32768)
+ {
+ /* The GOT offset is too big for a displacement but small
+ enough to be a signed 16 bit immediate value as it can be
+ used in an lhi instruction. */
+ memcpy (plt->contents + iplt_offset,
+ elf_s390_plt_pic16_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Put in the GOT offset for the lhi instruction. */
+ bfd_put_16 (output_bfd, (bfd_vma)got_offset,
+ plt->contents + iplt_offset + 2);
+
+ /* Adjust the jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ plt->contents + iplt_offset + 20);
+ }
+ else
+ {
+ memcpy (plt->contents + iplt_offset,
+ elf_s390_plt_pic_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Adjust the jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ plt->contents + iplt_offset + 20);
+
+ /* Push the GOT offset field. */
+ bfd_put_32 (output_bfd, got_offset,
+ plt->contents + iplt_offset + 24);
+ }
+ /* Insert offset into reloc. table here. */
+ bfd_put_32 (output_bfd, relplt->output_offset +
+ iplt_index * RELA_ENTRY_SIZE,
+ plt->contents + iplt_offset + 28);
+
+ /* Fill in the entry in the global offset table.
+ Points to instruction after GOT offset. */
+ bfd_put_32 (output_bfd,
+ (plt->output_section->vma
+ + plt->output_offset
+ + iplt_offset
+ + 12),
+ gotplt->contents + igotiplt_offset);
+
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_offset = gotplt->output_section->vma + got_offset;
+
+ if (!h
+ || h->dynindx == -1
+ || ((bfd_link_executable (info)
+ || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ && h->def_regular))
+ {
+ /* The symbol can be locally resolved. */
+ rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
+ rela.r_addend = resolver_address;
+ }
+ else
+ {
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
+ rela.r_addend = 0;
+ }
+
+ loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
-static 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;
+static bfd_boolean
+elf_s390_finish_dynamic_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
struct elf_s390_link_hash_table *htab;
+ struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
htab = elf_s390_hash_table (info);
bfd_vma plt_index;
bfd_vma got_offset;
Elf_Internal_Rela rela;
- Elf32_External_Rela *loc;
+ bfd_byte *loc;
bfd_vma relative_offset;
/* This symbol has an entry in the procedure linkage table. Set
- it up. */
-
- if (h->dynindx == -1
- || htab->splt == NULL
- || htab->sgotplt == NULL
- || htab->srelplt == NULL)
- abort ();
-
- /* 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. */
- got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
-
- /* S390 uses halfwords for relative branch calc! */
- relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
- (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
- /* If offset is > 32768, branch to a previous branch
- 390 can only handle +-64 K jumps. */
- if ( -32768 > (int) relative_offset )
- relative_offset =
- -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
-
- /* Fill in the entry in the procedure linkage table. */
- if (!info->shared)
- {
- 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) 0+(relative_offset << 16),
- htab->splt->contents + h->plt.offset + 20);
- bfd_put_32 (output_bfd,
- (htab->sgotplt->output_section->vma
- + htab->sgotplt->output_offset
- + got_offset),
- htab->splt->contents + h->plt.offset + 24);
- }
- else if (got_offset < 4096)
+ it up. */
+ if (s390_is_ifunc_symbol_p (h) && h->def_regular)
{
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset,
- htab->splt->contents + h->plt.offset);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1,
- htab->splt->contents + h->plt.offset + 4);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2,
- htab->splt->contents + h->plt.offset + 8);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3,
- htab->splt->contents + h->plt.offset + 12);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4,
- htab->splt->contents + h->plt.offset + 16);
- bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
- htab->splt->contents + h->plt.offset + 20);
- bfd_put_32 (output_bfd, (bfd_vma) 0,
- htab->splt->contents + h->plt.offset + 24);
- }
- else if (got_offset < 32768)
- {
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset,
- htab->splt->contents + h->plt.offset);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1,
- htab->splt->contents + h->plt.offset + 4);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2,
- htab->splt->contents + h->plt.offset + 8);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3,
- htab->splt->contents + h->plt.offset + 12);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4,
- htab->splt->contents + h->plt.offset + 16);
- bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
- htab->splt->contents + h->plt.offset + 20);
- bfd_put_32 (output_bfd, (bfd_vma) 0,
- htab->splt->contents + h->plt.offset + 24);
+ elf_s390_finish_ifunc_symbol (output_bfd, info, h,
+ htab, h->plt.offset,
+ eh->ifunc_resolver_address +
+ eh->ifunc_resolver_section->output_offset +
+ eh->ifunc_resolver_section->output_section->vma);
+ /* Do not return yet. Handling of explicit GOT slots of
+ IFUNC symbols is below. */
}
else
{
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0,
- htab->splt->contents + h->plt.offset);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1,
- htab->splt->contents + h->plt.offset + 4);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
- htab->splt->contents + h->plt.offset + 8);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
- htab->splt->contents + h->plt.offset + 12);
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
- htab->splt->contents + h->plt.offset + 16);
- bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
- htab->splt->contents + h->plt.offset + 20);
- bfd_put_32 (output_bfd, got_offset,
- htab->splt->contents + h->plt.offset + 24);
- }
- /* Insert offset into reloc. table here. */
- bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
- htab->splt->contents + h->plt.offset + 28);
+ if (h->dynindx == -1
+ || htab->elf.splt == NULL
+ || htab->elf.sgotplt == NULL
+ || htab->elf.srelplt == NULL)
+ abort ();
- /* Fill in the entry in the global offset table.
- Points to instruction after GOT offset. */
- bfd_put_32 (output_bfd,
- (htab->splt->output_section->vma
- + htab->splt->output_offset
- + h->plt.offset
- + 12),
- 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 = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
- rela.r_addend = 0;
- loc = (Elf32_External_Rela *) htab->srelplt->contents + plt_index;
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
+ /* 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. */
+ got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
+
+ /* S390 uses halfwords for relative branch calc! */
+ relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
+ (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
+ /* If offset is > 32768, branch to a previous branch
+ 390 can only handle +-64 K jumps. */
+ if ( -32768 > (int) relative_offset )
+ relative_offset
+ = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
+
+ /* Fill in the entry in the procedure linkage table. */
+ if (!bfd_link_pic (info))
+ {
+ memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Adjust jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ htab->elf.splt->contents + h->plt.offset + 20);
+
+ /* Push the GOT offset field. */
+ bfd_put_32 (output_bfd,
+ (htab->elf.sgotplt->output_section->vma
+ + htab->elf.sgotplt->output_offset
+ + got_offset),
+ htab->elf.splt->contents + h->plt.offset + 24);
+ }
+ else if (got_offset < 4096)
+ {
+ /* The GOT offset is small enough to be used directly as
+ displacement. */
+ memcpy (htab->elf.splt->contents + h->plt.offset,
+ elf_s390_plt_pic12_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Put in the GOT offset as displacement value. The 0xc000
+ value comes from the first word of the plt entry. Look
+ at the elf_s390_plt_pic12_entry content. */
+ bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
+ htab->elf.splt->contents + h->plt.offset + 2);
+
+ /* Adjust the jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ htab->elf.splt->contents + h->plt.offset + 20);
+ }
+ else if (got_offset < 32768)
+ {
+ /* The GOT offset is too big for a displacement but small
+ enough to be a signed 16 bit immediate value as it can be
+ used in an lhi instruction. */
+ memcpy (htab->elf.splt->contents + h->plt.offset,
+ elf_s390_plt_pic16_entry,
+ PLT_ENTRY_SIZE);
+
+ /* Put in the GOT offset for the lhi instruction. */
+ bfd_put_16 (output_bfd, (bfd_vma)got_offset,
+ htab->elf.splt->contents + h->plt.offset + 2);
+
+ /* Adjust the jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ htab->elf.splt->contents + h->plt.offset + 20);
+ }
+ else
+ {
+ memcpy (htab->elf.splt->contents + h->plt.offset,
+ elf_s390_plt_pic_entry,
+ PLT_ENTRY_SIZE);
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. This is a clue
- for the dynamic linker, to make function pointer
- comparisons work between an application and shared
- library. */
- sym->st_shndx = SHN_UNDEF;
+ /* Adjust the jump to the first plt entry. */
+ bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
+ htab->elf.splt->contents + h->plt.offset + 20);
+
+ /* Push the GOT offset field. */
+ bfd_put_32 (output_bfd, got_offset,
+ htab->elf.splt->contents + h->plt.offset + 24);
+ }
+ /* Insert offset into reloc. table here. */
+ bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
+ htab->elf.splt->contents + h->plt.offset + 28);
+
+ /* Fill in the entry in the global offset table.
+ Points to instruction after GOT offset. */
+ bfd_put_32 (output_bfd,
+ (htab->elf.splt->output_section->vma
+ + htab->elf.splt->output_offset
+ + h->plt.offset
+ + 12),
+ htab->elf.sgotplt->contents + got_offset);
+
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_offset = (htab->elf.sgotplt->output_section->vma
+ + htab->elf.sgotplt->output_offset
+ + got_offset);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
+ rela.r_addend = 0;
+ loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
+
+ if (!h->def_regular)
+ {
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value alone. This is a clue
+ for the dynamic linker, to make function pointer
+ comparisons work between an application and shared
+ library. */
+ 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)
{
Elf_Internal_Rela rela;
- Elf32_External_Rela *loc;
+ bfd_byte *loc;
/* This symbol has an entry in the global offset table. Set it
- up. */
+ up. */
- if (htab->sgot == NULL || htab->srelgot == NULL)
+ if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
abort ();
- rela.r_offset = (htab->sgot->output_section->vma
- + htab->sgot->output_offset
+ rela.r_offset = (htab->elf.sgot->output_section->vma
+ + htab->elf.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 (info->shared
- && (info->symbolic
- || h->dynindx == -1
- || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
+ if (h->def_regular && s390_is_ifunc_symbol_p (h))
{
+ if (bfd_link_pic (info))
+ {
+ /* An explicit GOT slot usage needs GLOB_DAT. If the
+ symbol references local the implicit got.iplt slot
+ will be used and the IRELATIVE reloc has been created
+ above. */
+ goto do_glob_dat;
+ }
+ else
+ {
+ /* For non-shared objects explicit GOT slots must be
+ filled with the PLT slot address for pointer
+ equality reasons. */
+ bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
+ + htab->elf.iplt->output_offset
+ + h->plt.offset),
+ htab->elf.sgot->contents + h->got.offset);
+ return TRUE;
+ }
+ }
+ else if (bfd_link_pic (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ {
+ /* If this is a static link, or it is a -Bsymbolic link and
+ the symbol is defined locally or was forced to be local
+ because 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 (!(h->def_regular || ELF_COMMON_DEF_P (h)))
+ return FALSE;
BFD_ASSERT((h->got.offset & 1) != 0);
rela.r_info = ELF32_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);
- }
+ + 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_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
+ do_glob_dat:
+ bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
- rela.r_addend = 0;
- }
+ rela.r_addend = 0;
+ }
- loc = (Elf32_External_Rela *) htab->srelgot->contents;
- loc += htab->srelgot->reloc_count++;
+ loc = htab->elf.srelgot->contents;
+ loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ if (h->needs_copy)
{
Elf_Internal_Rela rela;
- Elf32_External_Rela *loc;
+ asection *s;
+ bfd_byte *loc;
/* This symbols needs a copy reloc. Set it up. */
if (h->dynindx == -1
|| (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
- || htab->srelbss == NULL)
+ || htab->elf.srelbss == NULL
+ || htab->elf.sreldynrelro == NULL)
abort ();
rela.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
rela.r_addend = 0;
- loc = (Elf32_External_Rela *) htab->srelbss->contents;
- loc += htab->srelbss->reloc_count++;
+ if (h->root.u.def.section == htab->elf.sdynrelro)
+ s = htab->elf.sreldynrelro;
+ else
+ s = htab->elf.srelbss;
+ loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_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)
+ if (h == htab->elf.hdynamic
+ || 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;
+elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ const asection *rel_sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *rela)
{
+ bfd *abfd = info->output_bfd;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
+ unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
+ Elf_Internal_Sym sym;
+
+ if (htab->elf.dynsym == NULL
+ || !bed->s->swap_symbol_in (abfd,
+ (htab->elf.dynsym->contents
+ + r_symndx * bed->s->sizeof_sym),
+ 0, &sym))
+ abort ();
+
+ /* Check relocation against STT_GNU_IFUNC symbol. */
+ if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
+ return reloc_class_ifunc;
+
switch ((int) ELF32_R_TYPE (rela->r_info))
{
case R_390_RELATIVE:
/* Finish up the dynamic sections. */
-static boolean
-elf_s390_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+static bfd_boolean
+elf_s390_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
struct elf_s390_link_hash_table *htab;
bfd *dynobj;
asection *sdyn;
+ bfd *ibfd;
+ unsigned int i;
htab = elf_s390_hash_table (info);
dynobj = htab->elf.dynobj;
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ sdyn = bfd_get_linker_section (dynobj, ".dynamic");
if (htab->elf.dynamic_sections_created)
{
Elf32_External_Dyn *dyncon, *dynconend;
- if (sdyn == NULL || htab->sgot == NULL)
+ if (sdyn == NULL || htab->elf.sgot == NULL)
abort ();
dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
continue;
case DT_PLTGOT:
- dyn.d_un.d_ptr = htab->sgot->output_section->vma;
+ s = htab->elf.sgotplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
break;
case DT_JMPREL:
- dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
+ s = htab->elf.srelplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
break;
case DT_PLTRELSZ:
- s = htab->srelplt->output_section;
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
+ dyn.d_un.d_val = htab->elf.srelplt->size;
+ if (htab->elf.irelplt)
+ dyn.d_un.d_val += htab->elf.irelplt->size;
break;
}
}
/* Fill in the special first entry in the procedure linkage table. */
- if (htab->splt && htab->splt->_raw_size > 0)
+ if (htab->elf.splt && htab->elf.splt->size > 0)
{
- memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
- if (info->shared)
+ memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
+ if (bfd_link_pic (info))
+ {
+ memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
+ PLT_FIRST_ENTRY_SIZE);
+ }
+ else
{
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0,
- htab->splt->contents );
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1,
- htab->splt->contents +4 );
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2,
- htab->splt->contents +8 );
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3,
- htab->splt->contents +12 );
- bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4,
- htab->splt->contents +16 );
- }
- else
- {
- 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_WORD2,
- htab->splt->contents +8 );
- 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,
- htab->sgotplt->output_section->vma
- + htab->sgotplt->output_offset,
- htab->splt->contents + 24);
- }
- elf_section_data (htab->splt->output_section)
+ memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
+ PLT_FIRST_ENTRY_SIZE);
+ bfd_put_32 (output_bfd,
+ htab->elf.sgotplt->output_section->vma
+ + htab->elf.sgotplt->output_offset,
+ htab->elf.splt->contents + 24);
+ }
+ elf_section_data (htab->elf.splt->output_section)
->this_hdr.sh_entsize = 4;
}
}
- if (htab->sgotplt)
+ if (htab->elf.sgotplt)
{
/* Fill in the first three entries in the global offset table. */
- if (htab->sgotplt->_raw_size > 0)
+ if (htab->elf.sgotplt->size > 0)
{
bfd_put_32 (output_bfd,
(sdyn == NULL ? (bfd_vma) 0
: sdyn->output_section->vma + sdyn->output_offset),
- htab->sgotplt->contents);
+ htab->elf.sgotplt->contents);
/* One entry for shared object struct ptr. */
- bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
/* One entry for _dl_runtime_resolve. */
- bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
}
- elf_section_data (htab->sgotplt->output_section)
+ elf_section_data (htab->elf.sgotplt->output_section)
->this_hdr.sh_entsize = 4;
}
- return true;
-}
+ /* Finish dynamic symbol for local IFUNC symbols. */
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
+ {
+ struct plt_entry *local_plt;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Shdr *symtab_hdr;
-static boolean
-elf_s390_object_p (abfd)
- bfd *abfd;
-{
- return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_esa);
+ symtab_hdr = &elf_symtab_hdr (ibfd);
+
+ if (!is_s390_elf (ibfd))
+ continue;
+
+ local_plt = elf_s390_local_plt (ibfd);
+ if (local_plt != NULL)
+ for (i = 0; i < symtab_hdr->sh_info; i++)
+ {
+ if (local_plt[i].plt.offset != (bfd_vma) -1)
+ {
+ asection *sec = local_plt[i].sec;
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
+ if (isym == NULL)
+ return FALSE;
+
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
+ local_plt[i].plt.offset,
+ isym->st_value
+ + sec->output_section->vma
+ + sec->output_offset);
+
+ }
+ }
+ }
+ return TRUE;
}
+\f
+/* Support for core dump NOTE sections. */
-static boolean
-elf_s390_grok_prstatus (abfd, note)
- bfd * abfd;
- Elf_Internal_Note * note;
+static bfd_boolean
+elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
{
int offset;
- unsigned int raw_size;
+ unsigned int size;
switch (note->descsz)
{
- default:
- return false;
+ default:
+ return FALSE;
- case 224: /* S/390 Linux. */
- /* pr_cursig */
- elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+ case 224: /* S/390 Linux. */
+ /* pr_cursig */
+ elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
- /* pr_pid */
- elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+ /* pr_pid */
+ elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
- /* pr_reg */
- offset = 72;
- raw_size = 144;
- break;
+ /* pr_reg */
+ offset = 72;
+ size = 144;
+ break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- raw_size, note->descpos + offset);
+ size, note->descpos + offset);
}
-#define TARGET_BIG_SYM bfd_elf32_s390_vec
+static bfd_boolean
+elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+ switch (note->descsz)
+ {
+ default:
+ return FALSE;
+
+ case 124: /* sizeof(struct elf_prpsinfo) on s390 */
+ elf_tdata (abfd)->core->pid
+ = bfd_get_32 (abfd, note->descdata + 12);
+ elf_tdata (abfd)->core->program
+ = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
+ elf_tdata (abfd)->core->command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
+ break;
+ }
+
+ /* Note that for some reason, a spurious space is tacked
+ onto the end of the args in some (at least one anyway)
+ implementations, so strip it off if it exists. */
+
+ {
+ char *command = elf_tdata (abfd)->core->command;
+ int n = strlen (command);
+
+ if (0 < n && command[n - 1] == ' ')
+ command[n - 1] = '\0';
+ }
+
+ return TRUE;
+}
+
+static char *
+elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
+ int note_type, ...)
+{
+ va_list ap;
+
+ switch (note_type)
+ {
+ default:
+ return NULL;
+
+ case NT_PRPSINFO:
+ {
+ char data[124] ATTRIBUTE_NONSTRING = { 0 };
+ const char *fname, *psargs;
+
+ va_start (ap, note_type);
+ fname = va_arg (ap, const char *);
+ psargs = va_arg (ap, const char *);
+ va_end (ap);
+
+ strncpy (data + 28, fname, 16);
+#if GCC_VERSION == 8000 || GCC_VERSION == 8001
+ DIAGNOSTIC_PUSH;
+ /* GCC 8.0 and 8.1 warn about 80 equals destination size with
+ -Wstringop-truncation:
+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
+ */
+ DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
+#endif
+ strncpy (data + 44, psargs, 80);
+#if GCC_VERSION == 8000 || GCC_VERSION == 8001
+ DIAGNOSTIC_POP;
+#endif
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &data, sizeof (data));
+ }
+
+ case NT_PRSTATUS:
+ {
+ char data[224] = { 0 };
+ long pid;
+ int cursig;
+ const void *gregs;
+
+ va_start (ap, note_type);
+ pid = va_arg (ap, long);
+ cursig = va_arg (ap, int);
+ gregs = va_arg (ap, const void *);
+ va_end (ap);
+
+ bfd_put_16 (abfd, cursig, data + 12);
+ bfd_put_32 (abfd, pid, data + 24);
+ memcpy (data + 72, gregs, 144);
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
+ &data, sizeof (data));
+ }
+ }
+ /* NOTREACHED */
+}
+\f
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+ or (bfd_vma) -1 if it should not be included. */
+
+static bfd_vma
+elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
+ const arelent *rel ATTRIBUTE_UNUSED)
+{
+ return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+static bfd_boolean
+elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
+{
+ bfd *obfd = info->output_bfd;
+
+ if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
+ return TRUE;
+
+ if (!elf_s390_merge_obj_attributes (ibfd, info))
+ return FALSE;
+
+ elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
+ return TRUE;
+}
+
+
+#define TARGET_BIG_SYM s390_elf32_vec
#define TARGET_BIG_NAME "elf32-s390"
#define ELF_ARCH bfd_arch_s390
+#define ELF_TARGET_ID S390_ELF_DATA
#define ELF_MACHINE_CODE EM_S390
#define ELF_MACHINE_ALT1 EM_S390_OLD
#define ELF_MAXPAGESIZE 0x1000
#define elf_backend_plt_readonly 1
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
-#define elf_backend_plt_header_size PLT_ENTRY_SIZE
+#define elf_backend_want_dynrelro 1
+#define elf_backend_rela_normal 1
-#define elf_info_to_howto elf_s390_info_to_howto
+#define elf_info_to_howto elf_s390_info_to_howto
#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
+
+#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
-#define elf_backend_check_relocs elf_s390_check_relocs
+#define elf_backend_check_relocs elf_s390_check_relocs
#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
-#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
+#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
-#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
-#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
+#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
#define elf_backend_reloc_type_class elf_s390_reloc_type_class
-#define elf_backend_relocate_section elf_s390_relocate_section
+#define elf_backend_relocate_section elf_s390_relocate_section
#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
-#define elf_backend_reloc_type_class elf_s390_reloc_type_class
+#define elf_backend_init_index_section _bfd_elf_init_1_index_section
#define elf_backend_grok_prstatus elf_s390_grok_prstatus
+#define elf_backend_grok_psinfo elf_s390_grok_psinfo
+#define elf_backend_write_core_note elf_s390_write_core_note
+#define elf_backend_plt_sym_val elf_s390_plt_sym_val
+#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
+
+#define bfd_elf32_mkobject elf_s390_mkobject
+#define elf_backend_object_p elf_s390_object_p
-#define elf_backend_object_p elf_s390_object_p
+#define elf_backend_linux_prpsinfo32_ugid16 TRUE
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff