Add PIC and TLS support to the ARC target.
bfd/ChangeLog:
* arc-plt.def: New file.
* arc-plt.h: Likewise.
* elf32-arc.c (elf_arc_abs_plt0_entry, elf_arc_abs_pltn_entry,
elf_arcV2_abs_plt0_entry, elf_arcV2_abs_pltn_entry,
elf_arc_pic_plt0_entry, elf_arc_pic_pltn_entry,
elf_arcV2_pic_plt0_entry, elf_arcV2_pic_pltn_entry): Remove.
(name_for_global_symbol): Added.
(ADD_RELA): Helper to create dynamic relocs.
(new_got_entry_to_list): Create a new got entry in linked list.
(symbol_has_entry_of_type): Search for specific type of entry in
list.
(is_reloc_for_GOT): return FALSE for any TLS related relocs.
(is_reloc_for_TLS, arc_elf_set_private_flags)
(arc_elf_print_private_bfd_data, arc_elf_copy_private_bfd_data)
(arc_elf_merge_private_bfd_data): New functions.
(debug_arc_reloc): Cleaned debug info printing.
(PDATA reloc): Changed not to perform address alignment.
(reverse_me): Added. Fix for ARC_32 relocs.
(arc_do_relocation): Return bfd_reloc_of when no relocation should
occur.
(arc_get_local_got_ents): Renamed from arc_get_local_got_offsets.
Changed function to access an array of list of GOT entries instead
of just an array of offsets.
(elf_arc_relocate_section): Added support for PIC and TLS related relocations.
(elf_arc_check_relocs): Likewise.
(elf_arc_adjust_dynamic_symbol, elf_arc_finish_dynamic_symbol,
(elf_arc_finish_dynamic_sections): Likewise
(arc_create_dynamic_sections): Modified conditions to create
dynamic sections.
(ADD_SYMBOL_REF_SEC_AND_RELOC): New macro.
(plt_do_relocs_for_symbol, relocate_plt_for_symbol)
(relocate_plt_for_entry): Changed to support new way to define PLT
related code.
(add_symbol_to_plt): Likewise.
(arc_elf_link_hash_table_create): New function.
include/ChangeLog:
* elf/arc-reloc.def (ARC_32, ARC_GOTPC, ARC_TLS_GD_GOT)
(ARC_TLS_IE_GOT, ARC_TLS_DTPOFF, ARC_TLS_DTPOFF_S9, ARC_TLS_LE_S9)
(ARC_TLS_LE_32): Fixed formula.
(ARC_TLS_GD_LD): Use new special function.
* opcode/arc-func.h: Changed all the replacement
functions to clear the patching bits before doing an or it with the value
argument.
2016-01-19 23:25:58 +08:00
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/* Arc V2 Related PLT entries.
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2017-01-02 11:36:43 +08:00
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Copyright (C) 2016-2017 Free Software Foundation, Inc.
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Add PIC and TLS support to the ARC target.
bfd/ChangeLog:
* arc-plt.def: New file.
* arc-plt.h: Likewise.
* elf32-arc.c (elf_arc_abs_plt0_entry, elf_arc_abs_pltn_entry,
elf_arcV2_abs_plt0_entry, elf_arcV2_abs_pltn_entry,
elf_arc_pic_plt0_entry, elf_arc_pic_pltn_entry,
elf_arcV2_pic_plt0_entry, elf_arcV2_pic_pltn_entry): Remove.
(name_for_global_symbol): Added.
(ADD_RELA): Helper to create dynamic relocs.
(new_got_entry_to_list): Create a new got entry in linked list.
(symbol_has_entry_of_type): Search for specific type of entry in
list.
(is_reloc_for_GOT): return FALSE for any TLS related relocs.
(is_reloc_for_TLS, arc_elf_set_private_flags)
(arc_elf_print_private_bfd_data, arc_elf_copy_private_bfd_data)
(arc_elf_merge_private_bfd_data): New functions.
(debug_arc_reloc): Cleaned debug info printing.
(PDATA reloc): Changed not to perform address alignment.
(reverse_me): Added. Fix for ARC_32 relocs.
(arc_do_relocation): Return bfd_reloc_of when no relocation should
occur.
(arc_get_local_got_ents): Renamed from arc_get_local_got_offsets.
Changed function to access an array of list of GOT entries instead
of just an array of offsets.
(elf_arc_relocate_section): Added support for PIC and TLS related relocations.
(elf_arc_check_relocs): Likewise.
(elf_arc_adjust_dynamic_symbol, elf_arc_finish_dynamic_symbol,
(elf_arc_finish_dynamic_sections): Likewise
(arc_create_dynamic_sections): Modified conditions to create
dynamic sections.
(ADD_SYMBOL_REF_SEC_AND_RELOC): New macro.
(plt_do_relocs_for_symbol, relocate_plt_for_symbol)
(relocate_plt_for_entry): Changed to support new way to define PLT
related code.
(add_symbol_to_plt): Likewise.
(arc_elf_link_hash_table_create): New function.
include/ChangeLog:
* elf/arc-reloc.def (ARC_32, ARC_GOTPC, ARC_TLS_GD_GOT)
(ARC_TLS_IE_GOT, ARC_TLS_DTPOFF, ARC_TLS_DTPOFF_S9, ARC_TLS_LE_S9)
(ARC_TLS_LE_32): Fixed formula.
(ARC_TLS_GD_LD): Use new special function.
* opcode/arc-func.h: Changed all the replacement
functions to clear the patching bits before doing an or it with the value
argument.
2016-01-19 23:25:58 +08:00
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Contributed by Cupertino Miranda (cmiranda@synopsys.com).
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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PLT_TYPE_START (ELF_ARCV2_PIC)
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PLT_ENTRY (0x2730, 0x7f8b, 0x0000, 0x0000) /* ld %r11, [pcl,0] : 0 to be replaced by _DYNAMIC@GOTPC+4 */
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PLT_ENTRY (0x2730, 0x7f8a, 0x0000, 0x0000) /* ld %r10, [pcl,0] : 0 to be replaced by _DYNAMIC@GOTPC+8 */
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PLT_ENTRY (0x2020, 0x0280) /* j [%r10] */
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PLT_ENTRY (0x0,0x0,0x0,0x0,0x0,0x0) /* padding */
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PLT_ELEM (0x2730, 0x7f8c, 0x0000, 0x0000) /* ld %r12, [%pc,func@got] */
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PLT_ELEM (0x2021, 0x0300) /* j.d [%r12] */
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PLT_ELEM (0x240a, 0x1fc0) /* mov %r12, %pcl */
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ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 4)
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ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 8)
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ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0)
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ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0)
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PLT_TYPE_END (ELF_ARCV2_PIC)
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PLT_TYPE_START (ELF_ARCV2_ABS)
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PLT_ENTRY (0x1600,0x700b,0x0000,0x0000) /* ld %r11, [0] */
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PLT_ENTRY (0x1600,0x700a,0x0000,0x0000) /* ld %r10, [0] */
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PLT_ENTRY (0x2020,0x0280) /* j [%r10] */
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PLT_ENTRY (0x0,0x0,0x0,0x0,0x0,0x0) /* padding */
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PLT_ELEM (0x2730, 0x7f8c, 0x0000, 0x0000) /* ld %r12, [%pcl,func@gotpc] */
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PLT_ELEM (0x2021,0x0300) /* j.d [%r12] */
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PLT_ELEM (0x240a,0x1fc0) /* mov %r12, %pcl */
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ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 4)
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ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 8)
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ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0)
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ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0)
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PLT_TYPE_END (ELF_ARCV2_ABS)
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/* Non Arc V2 Related PLT entries. */
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PLT_TYPE_START (ELF_ARC_PIC)
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PLT_ENTRY (0x2730,0x7f8b,0x0000,0x0000) /* ld %r11, [pcl,0] : 0 to be replaced by _DYNAMIC@GOTPC+4 */
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PLT_ENTRY (0x2730,0x7f8a,0x0000,0x0000) /* ld %r10, [pcl,0] : 0 to be replaced by -DYNAMIC@GOTPC+8 */
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PLT_ENTRY (0x2020,0x0280) /* j [%r10] */
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PLT_ENTRY (0x0,0x0) /* padding */
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PLT_ELEM (0x2730,0x7f8c,0x0000,0x0000) /* ld %r12, [%pc,func@got] */
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PLT_ELEM (0x7c20) /* j_s.d [%r12] */
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PLT_ELEM (0x74ef) /* mov_s %r12, %pcl */
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ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 4)
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ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 8)
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ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0)
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ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0)
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PLT_TYPE_END (ELF_ARC_PIC)
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PLT_TYPE_START (ELF_ARC_ABS)
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PLT_ENTRY (0x1600,0x700b,0x0000,0x0000) /* ld %r11, [0] */
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PLT_ENTRY (0x1600,0x700a,0x0000,0x0000) /* ld %r10, [0] */
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PLT_ENTRY (0x2020,0x0280) /* j [%r10] */
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PLT_ENTRY (0x0,0x0) /* padding */
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PLT_ELEM (0x2730,0x7f8c,0x0000,0x0000) /* ld %r12, [%pc,func@gotpc] */
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PLT_ELEM (0x7c20,0x74ef) /* mov_s %r12, %pcl */
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ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 4)
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ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 8)
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ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0)
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ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0)
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PLT_TYPE_END (ELF_ARC_ABS)
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