From 34e967a5f3ac5fd0353731a259e358d462823290 Mon Sep 17 00:00:00 2001 From: Miranda Cupertino Date: Tue, 19 Jan 2016 15:25:58 +0000 Subject: 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. --- bfd/arc-plt.def | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 bfd/arc-plt.def (limited to 'bfd/arc-plt.def') diff --git a/bfd/arc-plt.def b/bfd/arc-plt.def new file mode 100644 index 0000000..833dc20 --- /dev/null +++ b/bfd/arc-plt.def @@ -0,0 +1,94 @@ +/* Arc V2 Related PLT entries. + Copyright (C) 2016 Free Software Foundation, Inc. + Contributed by Cupertino Miranda (cmiranda@synopsys.com). + + This file is part of BFD, the Binary File Descriptor library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +PLT_TYPE_START (ELF_ARCV2_PIC) + PLT_ENTRY (0x2730, 0x7f8b, 0x0000, 0x0000) /* ld %r11, [pcl,0] : 0 to be replaced by _DYNAMIC@GOTPC+4 */ + PLT_ENTRY (0x2730, 0x7f8a, 0x0000, 0x0000) /* ld %r10, [pcl,0] : 0 to be replaced by _DYNAMIC@GOTPC+8 */ + PLT_ENTRY (0x2020, 0x0280) /* j [%r10] */ + PLT_ENTRY (0x0,0x0,0x0,0x0,0x0,0x0) /* padding */ + + PLT_ELEM (0x2730, 0x7f8c, 0x0000, 0x0000) /* ld %r12, [%pc,func@got] */ + PLT_ELEM (0x2021, 0x0300) /* j.d [%r12] */ + PLT_ELEM (0x240a, 0x1fc0) /* mov %r12, %pcl */ + + ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 4) + ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 8) + ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0) + + ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0) + +PLT_TYPE_END (ELF_ARCV2_PIC) + +PLT_TYPE_START (ELF_ARCV2_ABS) + PLT_ENTRY (0x1600,0x700b,0x0000,0x0000) /* ld %r11, [0] */ + PLT_ENTRY (0x1600,0x700a,0x0000,0x0000) /* ld %r10, [0] */ + PLT_ENTRY (0x2020,0x0280) /* j [%r10] */ + PLT_ENTRY (0x0,0x0,0x0,0x0,0x0,0x0) /* padding */ + + PLT_ELEM (0x2730, 0x7f8c, 0x0000, 0x0000) /* ld %r12, [%pcl,func@gotpc] */ + PLT_ELEM (0x2021,0x0300) /* j.d [%r12] */ + PLT_ELEM (0x240a,0x1fc0) /* mov %r12, %pcl */ + + ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 4) + ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 8) + ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0) + + ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0) + +PLT_TYPE_END (ELF_ARCV2_ABS) + + +/* Non Arc V2 Related PLT entries. */ + +PLT_TYPE_START (ELF_ARC_PIC) + PLT_ENTRY (0x2730,0x7f8b,0x0000,0x0000) /* ld %r11, [pcl,0] : 0 to be replaced by _DYNAMIC@GOTPC+4 */ + PLT_ENTRY (0x2730,0x7f8a,0x0000,0x0000) /* ld %r10, [pcl,0] : 0 to be replaced by -DYNAMIC@GOTPC+8 */ + PLT_ENTRY (0x2020,0x0280) /* j [%r10] */ + PLT_ENTRY (0x0,0x0) /* padding */ + + PLT_ELEM (0x2730,0x7f8c,0x0000,0x0000) /* ld %r12, [%pc,func@got] */ + PLT_ELEM (0x7c20) /* j_s.d [%r12] */ + PLT_ELEM (0x74ef) /* mov_s %r12, %pcl */ + + ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 4) + ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 8) + ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0) + + ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0) + +PLT_TYPE_END (ELF_ARC_PIC) + +PLT_TYPE_START (ELF_ARC_ABS) + PLT_ENTRY (0x1600,0x700b,0x0000,0x0000) /* ld %r11, [0] */ + PLT_ENTRY (0x1600,0x700a,0x0000,0x0000) /* ld %r10, [0] */ + PLT_ENTRY (0x2020,0x0280) /* j [%r10] */ + PLT_ENTRY (0x0,0x0) /* padding */ + + PLT_ELEM (0x2730,0x7f8c,0x0000,0x0000) /* ld %r12, [%pc,func@gotpc] */ + PLT_ELEM (0x7c20,0x74ef) /* mov_s %r12, %pcl */ + + ENTRY_RELOC (4, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 4) + ENTRY_RELOC (12, 32, 0xFFFFFFFF, SGOT | MIDDLE_ENDIAN, 8) + ENTRY_RELOC (20, 32, 0xFFFFFFFF, SGOT, 0) + + ELEM_RELOC (4, 32, 0xFFFFFFFF, SGOT | RELATIVE_INSN_32 | MIDDLE_ENDIAN, 0) + +PLT_TYPE_END (ELF_ARC_ABS) -- cgit v1.1