1/* SPARC-specific support for 32-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21#include "bfd.h" 22#include "sysdep.h" 23#include "bfdlink.h" 24#include "libbfd.h" 25#include "elf-bfd.h" 26#include "elf/sparc.h" 27#include "opcode/sparc.h" 28 29static reloc_howto_type *elf32_sparc_reloc_type_lookup 30 PARAMS ((bfd *, bfd_reloc_code_real_type)); 31static void elf32_sparc_info_to_howto 32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 33static bfd_boolean elf32_sparc_check_relocs 34 PARAMS ((bfd *, struct bfd_link_info *, asection *, 35 const Elf_Internal_Rela *)); 36static bfd_boolean elf32_sparc_adjust_dynamic_symbol 37 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); 38static bfd_boolean allocate_dynrelocs 39 PARAMS ((struct elf_link_hash_entry *, PTR)); 40static bfd_boolean readonly_dynrelocs 41 PARAMS ((struct elf_link_hash_entry *, PTR)); 42static bfd_boolean elf32_sparc_size_dynamic_sections 43 PARAMS ((bfd *, struct bfd_link_info *)); 44static bfd_boolean elf32_sparc_new_section_hook 45 PARAMS ((bfd *, asection *)); 46static bfd_boolean elf32_sparc_relax_section 47 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); 48static bfd_vma dtpoff_base 49 PARAMS ((struct bfd_link_info *)); 50static bfd_vma tpoff 51 PARAMS ((struct bfd_link_info *, bfd_vma)); 52static bfd_boolean elf32_sparc_relocate_section 53 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 54 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); 55static bfd_boolean elf32_sparc_finish_dynamic_symbol 56 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 57 Elf_Internal_Sym *)); 58static bfd_boolean elf32_sparc_finish_dynamic_sections 59 PARAMS ((bfd *, struct bfd_link_info *)); 60static bfd_boolean elf32_sparc_merge_private_bfd_data 61 PARAMS ((bfd *, bfd *)); 62static struct bfd_hash_entry *link_hash_newfunc 63 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); 64static struct bfd_link_hash_table *elf32_sparc_link_hash_table_create 65 PARAMS ((bfd *)); 66static bfd_boolean create_got_section 67 PARAMS ((bfd *, struct bfd_link_info *)); 68static bfd_boolean elf32_sparc_create_dynamic_sections 69 PARAMS ((bfd *, struct bfd_link_info *)); 70static void elf32_sparc_copy_indirect_symbol 71 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *, 72 struct elf_link_hash_entry *)); 73static int elf32_sparc_tls_transition 74 PARAMS ((struct bfd_link_info *, bfd *, int, int)); 75 76static bfd_boolean elf32_sparc_mkobject 77 PARAMS ((bfd *)); 78static bfd_boolean elf32_sparc_object_p 79 PARAMS ((bfd *)); 80static void elf32_sparc_final_write_processing 81 PARAMS ((bfd *, bfd_boolean)); 82static enum elf_reloc_type_class elf32_sparc_reloc_type_class 83 PARAMS ((const Elf_Internal_Rela *)); 84static asection * elf32_sparc_gc_mark_hook 85 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, 86 struct elf_link_hash_entry *, Elf_Internal_Sym *)); 87static bfd_boolean elf32_sparc_gc_sweep_hook 88 PARAMS ((bfd *, struct bfd_link_info *, asection *, 89 const Elf_Internal_Rela *)); 90 91/* The relocation "howto" table. */ 92 93static bfd_reloc_status_type sparc_elf_notsupported_reloc 94 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 95static bfd_reloc_status_type sparc_elf_wdisp16_reloc 96 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 97static bfd_reloc_status_type sparc_elf_hix22_reloc 98 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 99static bfd_reloc_status_type sparc_elf_lox10_reloc 100 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 101 102reloc_howto_type _bfd_sparc_elf_howto_table[] = 103{ 104 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 105 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), 106 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), 107 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), 108 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), 109 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), 110 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), 111 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), 112 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), 113 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), 114 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), 115 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), 116 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), 117 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), 118 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), 119 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), 120 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), 121 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), 122 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), 123 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), 124 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE), 125 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE), 126 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), 127 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), 128 HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), 129 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), 130 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), 131 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), 132 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), 133 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), 134 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), 135 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), 136 /* These are for sparc64 in a 64 bit environment. 137 Values need to be here because the table is indexed by reloc number. */ 138 HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE), 139 HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE), 140 HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE), 141 HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE), 142 HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE), 143 HOWTO(R_SPARC_PC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", FALSE,0,0x00000000,TRUE), 144 HOWTO(R_SPARC_PC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", FALSE,0,0x00000000,TRUE), 145 HOWTO(R_SPARC_PC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", FALSE,0,0x00000000,TRUE), 146 /* End sparc64 in 64 bit environment values. 147 The following are for sparc64 in a 32 bit environment. */ 148 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), 149 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), 150 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE), 151 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), 152 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), 153 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), 154 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 155 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 156 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 157 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 158 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 159 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 160 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 161 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 162 HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE), 163 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), 164 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE), 165 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE), 166 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE), 167 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE), 168 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE), 169 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE), 170 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE), 171 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE), 172 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE), 173 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE), 174 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE), 175 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE), 176 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE), 177 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE), 178 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE), 179 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE), 180 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE), 181 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE), 182 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE), 183 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE), 184 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE), 185 HOWTO(R_SPARC_TLS_DTPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPOFF64",FALSE,0,0x00000000,TRUE), 186 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE), 187 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE) 188}; 189static reloc_howto_type elf32_sparc_vtinherit_howto = 190 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); 191static reloc_howto_type elf32_sparc_vtentry_howto = 192 HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE); 193static reloc_howto_type elf32_sparc_rev32_howto = 194 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE); 195 196struct elf_reloc_map { 197 bfd_reloc_code_real_type bfd_reloc_val; 198 unsigned char elf_reloc_val; 199}; 200 201static const struct elf_reloc_map sparc_reloc_map[] = 202{ 203 { BFD_RELOC_NONE, R_SPARC_NONE, }, 204 { BFD_RELOC_16, R_SPARC_16, }, 205 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, 206 { BFD_RELOC_8, R_SPARC_8 }, 207 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, 208 { BFD_RELOC_CTOR, R_SPARC_32 }, 209 { BFD_RELOC_32, R_SPARC_32 }, 210 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, 211 { BFD_RELOC_HI22, R_SPARC_HI22 }, 212 { BFD_RELOC_LO10, R_SPARC_LO10, }, 213 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, 214 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, 215 { BFD_RELOC_SPARC22, R_SPARC_22 }, 216 { BFD_RELOC_SPARC13, R_SPARC_13 }, 217 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, 218 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, 219 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, 220 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, 221 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, 222 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, 223 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, 224 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, 225 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, 226 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, 227 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, 228 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, 229 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, 230 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, 231 { BFD_RELOC_SPARC_10, R_SPARC_10 }, 232 { BFD_RELOC_SPARC_11, R_SPARC_11 }, 233 { BFD_RELOC_SPARC_64, R_SPARC_64 }, 234 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, 235 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, 236 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, 237 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, 238 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, 239 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, 240 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, 241 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, 242 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, 243 { BFD_RELOC_SPARC_7, R_SPARC_7 }, 244 { BFD_RELOC_SPARC_5, R_SPARC_5 }, 245 { BFD_RELOC_SPARC_6, R_SPARC_6 }, 246 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 }, 247 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 }, 248 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD }, 249 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL }, 250 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 }, 251 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 }, 252 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD }, 253 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL }, 254 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 }, 255 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 }, 256 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD }, 257 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 }, 258 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 }, 259 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD }, 260 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX }, 261 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD }, 262 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 }, 263 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 }, 264 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 }, 265 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 }, 266 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 }, 267 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 }, 268 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 }, 269 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 }, 270 { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, 271 { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, 272 { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 } 273}; 274 275static reloc_howto_type * 276elf32_sparc_reloc_type_lookup (abfd, code) 277 bfd *abfd ATTRIBUTE_UNUSED; 278 bfd_reloc_code_real_type code; 279{ 280 unsigned int i; 281 282 switch (code) 283 { 284 case BFD_RELOC_VTABLE_INHERIT: 285 return &elf32_sparc_vtinherit_howto; 286 287 case BFD_RELOC_VTABLE_ENTRY: 288 return &elf32_sparc_vtentry_howto; 289 290 case BFD_RELOC_SPARC_REV32: 291 return &elf32_sparc_rev32_howto; 292 293 default: 294 for (i = 0; 295 i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); 296 i++) 297 { 298 if (sparc_reloc_map[i].bfd_reloc_val == code) 299 return (_bfd_sparc_elf_howto_table 300 + (int) sparc_reloc_map[i].elf_reloc_val); 301 } 302 } 303 bfd_set_error (bfd_error_bad_value); 304 return NULL; 305} 306 307/* We need to use ELF32_R_TYPE so we have our own copy of this function, 308 and elf64-sparc.c has its own copy. */ 309 310static void 311elf32_sparc_info_to_howto (abfd, cache_ptr, dst) 312 bfd *abfd ATTRIBUTE_UNUSED; 313 arelent *cache_ptr; 314 Elf_Internal_Rela *dst; 315{ 316 switch (ELF32_R_TYPE(dst->r_info)) 317 { 318 case R_SPARC_GNU_VTINHERIT: 319 cache_ptr->howto = &elf32_sparc_vtinherit_howto; 320 break; 321 322 case R_SPARC_GNU_VTENTRY: 323 cache_ptr->howto = &elf32_sparc_vtentry_howto; 324 break; 325 326 case R_SPARC_REV32: 327 cache_ptr->howto = &elf32_sparc_rev32_howto; 328 break; 329 330 default: 331 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std); 332 cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 333 } 334} 335 336/* For unsupported relocs. */ 337 338static bfd_reloc_status_type 339sparc_elf_notsupported_reloc (abfd, 340 reloc_entry, 341 symbol, 342 data, 343 input_section, 344 output_bfd, 345 error_message) 346 bfd *abfd ATTRIBUTE_UNUSED; 347 arelent *reloc_entry ATTRIBUTE_UNUSED; 348 asymbol *symbol ATTRIBUTE_UNUSED; 349 PTR data ATTRIBUTE_UNUSED; 350 asection *input_section ATTRIBUTE_UNUSED; 351 bfd *output_bfd ATTRIBUTE_UNUSED; 352 char **error_message ATTRIBUTE_UNUSED; 353{ 354 return bfd_reloc_notsupported; 355} 356 357/* Handle the WDISP16 reloc. */ 358 359static bfd_reloc_status_type 360sparc_elf_wdisp16_reloc (abfd, 361 reloc_entry, 362 symbol, 363 data, 364 input_section, 365 output_bfd, 366 error_message) 367 bfd *abfd; 368 arelent *reloc_entry; 369 asymbol *symbol; 370 PTR data; 371 asection *input_section; 372 bfd *output_bfd; 373 char **error_message ATTRIBUTE_UNUSED; 374{ 375 bfd_vma relocation; 376 bfd_vma x; 377 378 if (output_bfd != (bfd *) NULL 379 && (symbol->flags & BSF_SECTION_SYM) == 0 380 && (! reloc_entry->howto->partial_inplace 381 || reloc_entry->addend == 0)) 382 { 383 reloc_entry->address += input_section->output_offset; 384 return bfd_reloc_ok; 385 } 386 387 if (output_bfd != NULL) 388 return bfd_reloc_continue; 389 390 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 391 return bfd_reloc_outofrange; 392 393 relocation = (symbol->value 394 + symbol->section->output_section->vma 395 + symbol->section->output_offset); 396 relocation += reloc_entry->addend; 397 relocation -= (input_section->output_section->vma 398 + input_section->output_offset); 399 relocation -= reloc_entry->address; 400 401 x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 402 x |= ((((relocation >> 2) & 0xc000) << 6) 403 | ((relocation >> 2) & 0x3fff)); 404 bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address); 405 406 if ((bfd_signed_vma) relocation < - 0x40000 407 || (bfd_signed_vma) relocation > 0x3ffff) 408 return bfd_reloc_overflow; 409 else 410 return bfd_reloc_ok; 411} 412 413/* Handle the HIX22 reloc. */ 414 415static bfd_reloc_status_type 416sparc_elf_hix22_reloc (abfd, 417 reloc_entry, 418 symbol, 419 data, 420 input_section, 421 output_bfd, 422 error_message) 423 bfd *abfd; 424 arelent *reloc_entry; 425 asymbol *symbol; 426 PTR data; 427 asection *input_section; 428 bfd *output_bfd; 429 char **error_message ATTRIBUTE_UNUSED; 430{ 431 bfd_vma relocation; 432 bfd_vma insn; 433 434 if (output_bfd != (bfd *) NULL 435 && (symbol->flags & BSF_SECTION_SYM) == 0) 436 { 437 reloc_entry->address += input_section->output_offset; 438 return bfd_reloc_ok; 439 } 440 441 if (output_bfd != NULL) 442 return bfd_reloc_continue; 443 444 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 445 return bfd_reloc_outofrange; 446 447 relocation = (symbol->value 448 + symbol->section->output_section->vma 449 + symbol->section->output_offset); 450 relocation += reloc_entry->addend; 451 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 452 453 insn = (insn &~ (bfd_vma) 0x3fffff) | (((~relocation) >> 10) & 0x3fffff); 454 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 455 456 return bfd_reloc_ok; 457} 458 459/* Handle the LOX10 reloc. */ 460 461static bfd_reloc_status_type 462sparc_elf_lox10_reloc (abfd, 463 reloc_entry, 464 symbol, 465 data, 466 input_section, 467 output_bfd, 468 error_message) 469 bfd *abfd; 470 arelent *reloc_entry; 471 asymbol *symbol; 472 PTR data; 473 asection *input_section; 474 bfd *output_bfd; 475 char **error_message ATTRIBUTE_UNUSED; 476{ 477 bfd_vma relocation; 478 bfd_vma insn; 479 480 if (output_bfd != (bfd *) NULL 481 && (symbol->flags & BSF_SECTION_SYM) == 0) 482 { 483 reloc_entry->address += input_section->output_offset; 484 return bfd_reloc_ok; 485 } 486 487 if (output_bfd != NULL) 488 return bfd_reloc_continue; 489 490 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 491 return bfd_reloc_outofrange; 492 493 relocation = (symbol->value 494 + symbol->section->output_section->vma 495 + symbol->section->output_offset); 496 relocation += reloc_entry->addend; 497 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 498 499 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); 500 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 501 502 return bfd_reloc_ok; 503} 504 505/* Support for core dump NOTE sections. */ 506 507static bfd_boolean 508elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 509{ 510 switch (note->descsz) 511 { 512 default: 513 return FALSE; 514 515 case 260: /* Solaris prpsinfo_t. */ 516 elf_tdata (abfd)->core_program 517 = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16); 518 elf_tdata (abfd)->core_command 519 = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80); 520 break; 521 522 case 336: /* Solaris psinfo_t. */ 523 elf_tdata (abfd)->core_program 524 = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16); 525 elf_tdata (abfd)->core_command 526 = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80); 527 break; 528 } 529 530 return TRUE; 531} 532 533 534/* Functions for the SPARC ELF linker. */ 535 536/* The name of the dynamic interpreter. This is put in the .interp 537 section. */ 538 539#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 540 541/* The nop opcode we use. */ 542 543#define SPARC_NOP 0x01000000 544 545/* The size in bytes of an entry in the procedure linkage table. */ 546 547#define PLT_ENTRY_SIZE 12 548 549/* The first four entries in a procedure linkage table are reserved, 550 and the initial contents are unimportant (we zero them out). 551 Subsequent entries look like this. See the SVR4 ABI SPARC 552 supplement to see how this works. */ 553 554/* sethi %hi(.-.plt0),%g1. We fill in the address later. */ 555#define PLT_ENTRY_WORD0 0x03000000 556/* b,a .plt0. We fill in the offset later. */ 557#define PLT_ENTRY_WORD1 0x30800000 558/* nop. */ 559#define PLT_ENTRY_WORD2 SPARC_NOP 560 561/* The SPARC linker needs to keep track of the number of relocs that it 562 decides to copy as dynamic relocs in check_relocs for each symbol. 563 This is so that it can later discard them if they are found to be 564 unnecessary. We store the information in a field extending the 565 regular ELF linker hash table. */ 566 567struct elf32_sparc_dyn_relocs 568{ 569 struct elf32_sparc_dyn_relocs *next; 570 571 /* The input section of the reloc. */ 572 asection *sec; 573 574 /* Total number of relocs copied for the input section. */ 575 bfd_size_type count; 576 577 /* Number of pc-relative relocs copied for the input section. */ 578 bfd_size_type pc_count; 579}; 580 581/* SPARC ELF linker hash entry. */ 582 583struct elf32_sparc_link_hash_entry 584{ 585 struct elf_link_hash_entry elf; 586 587 /* Track dynamic relocs copied for this symbol. */ 588 struct elf32_sparc_dyn_relocs *dyn_relocs; 589 590#define GOT_UNKNOWN 0 591#define GOT_NORMAL 1 592#define GOT_TLS_GD 2 593#define GOT_TLS_IE 3 594 unsigned char tls_type; 595}; 596 597#define elf32_sparc_hash_entry(ent) ((struct elf32_sparc_link_hash_entry *)(ent)) 598 599struct elf32_sparc_obj_tdata 600{ 601 struct elf_obj_tdata root; 602 603 /* tls_type for each local got entry. */ 604 char *local_got_tls_type; 605 606 /* TRUE if TLS GD relocs has been seen for this object. */ 607 bfd_boolean has_tlsgd; 608}; 609 610#define elf32_sparc_tdata(abfd) \ 611 ((struct elf32_sparc_obj_tdata *) (abfd)->tdata.any) 612 613#define elf32_sparc_local_got_tls_type(abfd) \ 614 (elf32_sparc_tdata (abfd)->local_got_tls_type) 615 616static bfd_boolean 617elf32_sparc_mkobject (abfd) 618 bfd *abfd; 619{ 620 bfd_size_type amt = sizeof (struct elf32_sparc_obj_tdata); 621 abfd->tdata.any = bfd_zalloc (abfd, amt); 622 if (abfd->tdata.any == NULL) 623 return FALSE; 624 return TRUE; 625} 626 627/* SPARC ELF linker hash table. */ 628 629struct elf32_sparc_link_hash_table 630{ 631 struct elf_link_hash_table elf; 632 633 /* Short-cuts to get to dynamic linker sections. */ 634 asection *sgot; 635 asection *srelgot; 636 asection *splt; 637 asection *srelplt; 638 asection *sdynbss; 639 asection *srelbss; 640 641 union { 642 bfd_signed_vma refcount; 643 bfd_vma offset; 644 } tls_ldm_got; 645 646 /* Small local sym to section mapping cache. */ 647 struct sym_sec_cache sym_sec; 648}; 649 650/* Get the SPARC ELF linker hash table from a link_info structure. */ 651 652#define elf32_sparc_hash_table(p) \ 653 ((struct elf32_sparc_link_hash_table *) ((p)->hash)) 654 655/* Create an entry in an i386 ELF linker hash table. */ 656 657static struct bfd_hash_entry * 658link_hash_newfunc (entry, table, string) 659 struct bfd_hash_entry *entry; 660 struct bfd_hash_table *table; 661 const char *string; 662{ 663 /* Allocate the structure if it has not already been allocated by a 664 subclass. */ 665 if (entry == NULL) 666 { 667 entry = bfd_hash_allocate (table, 668 sizeof (struct elf32_sparc_link_hash_entry)); 669 if (entry == NULL) 670 return entry; 671 } 672 673 /* Call the allocation method of the superclass. */ 674 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 675 if (entry != NULL) 676 { 677 struct elf32_sparc_link_hash_entry *eh; 678 679 eh = (struct elf32_sparc_link_hash_entry *) entry; 680 eh->dyn_relocs = NULL; 681 eh->tls_type = GOT_UNKNOWN; 682 } 683 684 return entry; 685} 686 687/* Create a SPARC ELF linker hash table. */ 688 689static struct bfd_link_hash_table * 690elf32_sparc_link_hash_table_create (abfd) 691 bfd *abfd; 692{ 693 struct elf32_sparc_link_hash_table *ret; 694 bfd_size_type amt = sizeof (struct elf32_sparc_link_hash_table); 695 696 ret = (struct elf32_sparc_link_hash_table *) bfd_malloc (amt); 697 if (ret == NULL) 698 return NULL; 699 700 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) 701 { 702 free (ret); 703 return NULL; 704 } 705 706 ret->sgot = NULL; 707 ret->srelgot = NULL; 708 ret->splt = NULL; 709 ret->srelplt = NULL; 710 ret->sdynbss = NULL; 711 ret->srelbss = NULL; 712 ret->tls_ldm_got.refcount = 0; 713 ret->sym_sec.abfd = NULL; 714 715 return &ret->elf.root; 716} 717 718/* Create .got and .rela.got sections in DYNOBJ, and set up 719 shortcuts to them in our hash table. */ 720 721static bfd_boolean 722create_got_section (dynobj, info) 723 bfd *dynobj; 724 struct bfd_link_info *info; 725{ 726 struct elf32_sparc_link_hash_table *htab; 727 728 if (! _bfd_elf_create_got_section (dynobj, info)) 729 return FALSE; 730 731 htab = elf32_sparc_hash_table (info); 732 htab->sgot = bfd_get_section_by_name (dynobj, ".got"); 733 if (!htab->sgot) 734 abort (); 735 736 htab->srelgot = bfd_make_section (dynobj, ".rela.got"); 737 if (htab->srelgot == NULL 738 || ! bfd_set_section_flags (dynobj, htab->srelgot, 739 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 740 | SEC_IN_MEMORY | SEC_LINKER_CREATED 741 | SEC_READONLY)) 742 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) 743 return FALSE; 744 return TRUE; 745} 746 747/* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and 748 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 749 hash table. */ 750 751static bfd_boolean 752elf32_sparc_create_dynamic_sections (dynobj, info) 753 bfd *dynobj; 754 struct bfd_link_info *info; 755{ 756 struct elf32_sparc_link_hash_table *htab; 757 758 htab = elf32_sparc_hash_table (info); 759 if (!htab->sgot && !create_got_section (dynobj, info)) 760 return FALSE; 761 762 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 763 return FALSE; 764 765 htab->splt = bfd_get_section_by_name (dynobj, ".plt"); 766 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); 767 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); 768 if (!info->shared) 769 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); 770 771 if (!htab->splt || !htab->srelplt || !htab->sdynbss 772 || (!info->shared && !htab->srelbss)) 773 abort (); 774 775 return TRUE; 776} 777 778/* Copy the extra info we tack onto an elf_link_hash_entry. */ 779 780static void 781elf32_sparc_copy_indirect_symbol (bed, dir, ind) 782 const struct elf_backend_data *bed; 783 struct elf_link_hash_entry *dir, *ind; 784{ 785 struct elf32_sparc_link_hash_entry *edir, *eind; 786 787 edir = (struct elf32_sparc_link_hash_entry *) dir; 788 eind = (struct elf32_sparc_link_hash_entry *) ind; 789 790 if (eind->dyn_relocs != NULL) 791 { 792 if (edir->dyn_relocs != NULL) 793 { 794 struct elf32_sparc_dyn_relocs **pp; 795 struct elf32_sparc_dyn_relocs *p; 796 797 if (ind->root.type == bfd_link_hash_indirect) 798 abort (); 799 800 /* Add reloc counts against the weak sym to the strong sym 801 list. Merge any entries against the same section. */ 802 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 803 { 804 struct elf32_sparc_dyn_relocs *q; 805 806 for (q = edir->dyn_relocs; q != NULL; q = q->next) 807 if (q->sec == p->sec) 808 { 809 q->pc_count += p->pc_count; 810 q->count += p->count; 811 *pp = p->next; 812 break; 813 } 814 if (q == NULL) 815 pp = &p->next; 816 } 817 *pp = edir->dyn_relocs; 818 } 819 820 edir->dyn_relocs = eind->dyn_relocs; 821 eind->dyn_relocs = NULL; 822 } 823 824 if (ind->root.type == bfd_link_hash_indirect 825 && dir->got.refcount <= 0) 826 { 827 edir->tls_type = eind->tls_type; 828 eind->tls_type = GOT_UNKNOWN; 829 } 830 _bfd_elf_link_hash_copy_indirect (bed, dir, ind); 831} 832 833static int 834elf32_sparc_tls_transition (info, abfd, r_type, is_local) 835 struct bfd_link_info *info; 836 bfd *abfd; 837 int r_type; 838 int is_local; 839{ 840 if (r_type == R_SPARC_TLS_GD_HI22 841 && ! elf32_sparc_tdata (abfd)->has_tlsgd) 842 r_type = R_SPARC_REV32; 843 844 if (info->shared) 845 return r_type; 846 847 switch (r_type) 848 { 849 case R_SPARC_TLS_GD_HI22: 850 if (is_local) 851 return R_SPARC_TLS_LE_HIX22; 852 return R_SPARC_TLS_IE_HI22; 853 case R_SPARC_TLS_GD_LO10: 854 if (is_local) 855 return R_SPARC_TLS_LE_LOX10; 856 return R_SPARC_TLS_IE_LO10; 857 case R_SPARC_TLS_IE_HI22: 858 if (is_local) 859 return R_SPARC_TLS_LE_HIX22; 860 return r_type; 861 case R_SPARC_TLS_IE_LO10: 862 if (is_local) 863 return R_SPARC_TLS_LE_LOX10; 864 return r_type; 865 case R_SPARC_TLS_LDM_HI22: 866 return R_SPARC_TLS_LE_HIX22; 867 case R_SPARC_TLS_LDM_LO10: 868 return R_SPARC_TLS_LE_LOX10; 869 } 870 871 return r_type; 872} 873 874/* Look through the relocs for a section during the first phase, and 875 allocate space in the global offset table or procedure linkage 876 table. */ 877 878static bfd_boolean 879elf32_sparc_check_relocs (abfd, info, sec, relocs) 880 bfd *abfd; 881 struct bfd_link_info *info; 882 asection *sec; 883 const Elf_Internal_Rela *relocs; 884{ 885 struct elf32_sparc_link_hash_table *htab; 886 Elf_Internal_Shdr *symtab_hdr; 887 struct elf_link_hash_entry **sym_hashes; 888 bfd_vma *local_got_offsets; 889 const Elf_Internal_Rela *rel; 890 const Elf_Internal_Rela *rel_end; 891 asection *sreloc; 892 bfd_boolean checked_tlsgd = FALSE; 893 894 if (info->relocatable) 895 return TRUE; 896 897 htab = elf32_sparc_hash_table (info); 898 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 899 sym_hashes = elf_sym_hashes (abfd); 900 local_got_offsets = elf_local_got_offsets (abfd); 901 902 sreloc = NULL; 903 904 rel_end = relocs + sec->reloc_count; 905 for (rel = relocs; rel < rel_end; rel++) 906 { 907 unsigned int r_type; 908 unsigned long r_symndx; 909 struct elf_link_hash_entry *h; 910 911 r_symndx = ELF32_R_SYM (rel->r_info); 912 r_type = ELF32_R_TYPE (rel->r_info); 913 914 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 915 { 916 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), 917 abfd, r_symndx); 918 return FALSE; 919 } 920 921 if (r_symndx < symtab_hdr->sh_info) 922 h = NULL; 923 else 924 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 925 926 /* Compatibility with old R_SPARC_REV32 reloc conflicting 927 with R_SPARC_TLS_GD_HI22. */ 928 if (! checked_tlsgd) 929 switch (r_type) 930 { 931 case R_SPARC_TLS_GD_HI22: 932 { 933 const Elf_Internal_Rela *relt; 934 935 for (relt = rel + 1; relt < rel_end; relt++) 936 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10 937 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD 938 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL) 939 break; 940 checked_tlsgd = TRUE; 941 elf32_sparc_tdata (abfd)->has_tlsgd = relt < rel_end; 942 } 943 break; 944 case R_SPARC_TLS_GD_LO10: 945 case R_SPARC_TLS_GD_ADD: 946 case R_SPARC_TLS_GD_CALL: 947 checked_tlsgd = TRUE; 948 elf32_sparc_tdata (abfd)->has_tlsgd = TRUE; 949 break; 950 } 951 952 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h == NULL); 953 switch (r_type) 954 { 955 case R_SPARC_TLS_LDM_HI22: 956 case R_SPARC_TLS_LDM_LO10: 957 htab->tls_ldm_got.refcount += 1; 958 break; 959 960 case R_SPARC_TLS_LE_HIX22: 961 case R_SPARC_TLS_LE_LOX10: 962 if (info->shared) 963 goto r_sparc_plt32; 964 break; 965 966 case R_SPARC_TLS_IE_HI22: 967 case R_SPARC_TLS_IE_LO10: 968 if (info->shared) 969 info->flags |= DF_STATIC_TLS; 970 /* Fall through */ 971 972 case R_SPARC_GOT10: 973 case R_SPARC_GOT13: 974 case R_SPARC_GOT22: 975 case R_SPARC_TLS_GD_HI22: 976 case R_SPARC_TLS_GD_LO10: 977 /* This symbol requires a global offset table entry. */ 978 { 979 int tls_type, old_tls_type; 980 981 switch (r_type) 982 { 983 default: 984 case R_SPARC_GOT10: 985 case R_SPARC_GOT13: 986 case R_SPARC_GOT22: 987 tls_type = GOT_NORMAL; 988 break; 989 case R_SPARC_TLS_GD_HI22: 990 case R_SPARC_TLS_GD_LO10: 991 tls_type = GOT_TLS_GD; 992 break; 993 case R_SPARC_TLS_IE_HI22: 994 case R_SPARC_TLS_IE_LO10: 995 tls_type = GOT_TLS_IE; 996 break; 997 } 998 999 if (h != NULL) 1000 { 1001 h->got.refcount += 1; 1002 old_tls_type = elf32_sparc_hash_entry(h)->tls_type; 1003 } 1004 else 1005 { 1006 bfd_signed_vma *local_got_refcounts; 1007 1008 /* This is a global offset table entry for a local symbol. */ 1009 local_got_refcounts = elf_local_got_refcounts (abfd); 1010 if (local_got_refcounts == NULL) 1011 { 1012 bfd_size_type size; 1013 1014 size = symtab_hdr->sh_info; 1015 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1016 local_got_refcounts = ((bfd_signed_vma *) 1017 bfd_zalloc (abfd, size)); 1018 if (local_got_refcounts == NULL) 1019 return FALSE; 1020 elf_local_got_refcounts (abfd) = local_got_refcounts; 1021 elf32_sparc_local_got_tls_type (abfd) 1022 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1023 } 1024 local_got_refcounts[r_symndx] += 1; 1025 old_tls_type = elf32_sparc_local_got_tls_type (abfd) [r_symndx]; 1026 } 1027 1028 /* If a TLS symbol is accessed using IE at least once, 1029 there is no point to use dynamic model for it. */ 1030 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1031 && (old_tls_type != GOT_TLS_GD 1032 || tls_type != GOT_TLS_IE)) 1033 { 1034 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1035 tls_type = old_tls_type; 1036 else 1037 { 1038 (*_bfd_error_handler) 1039 (_("%B: `%s' accessed both as normal and thread local symbol"), 1040 abfd, h ? h->root.root.string : "<local>"); 1041 return FALSE; 1042 } 1043 } 1044 1045 if (old_tls_type != tls_type) 1046 { 1047 if (h != NULL) 1048 elf32_sparc_hash_entry (h)->tls_type = tls_type; 1049 else 1050 elf32_sparc_local_got_tls_type (abfd) [r_symndx] = tls_type; 1051 } 1052 } 1053 1054 if (htab->sgot == NULL) 1055 { 1056 if (htab->elf.dynobj == NULL) 1057 htab->elf.dynobj = abfd; 1058 if (!create_got_section (htab->elf.dynobj, info)) 1059 return FALSE; 1060 } 1061 break; 1062 1063 case R_SPARC_TLS_GD_CALL: 1064 case R_SPARC_TLS_LDM_CALL: 1065 if (info->shared) 1066 { 1067 /* These are basically R_SPARC_TLS_WPLT30 relocs against 1068 __tls_get_addr. */ 1069 struct bfd_link_hash_entry *bh = NULL; 1070 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1071 "__tls_get_addr", 0, 1072 bfd_und_section_ptr, 0, 1073 NULL, FALSE, FALSE, 1074 &bh)) 1075 return FALSE; 1076 h = (struct elf_link_hash_entry *) bh; 1077 } 1078 else 1079 break; 1080 /* Fall through */ 1081 1082 case R_SPARC_PLT32: 1083 case R_SPARC_WPLT30: 1084 /* This symbol requires a procedure linkage table entry. We 1085 actually build the entry in adjust_dynamic_symbol, 1086 because this might be a case of linking PIC code without 1087 linking in any dynamic objects, in which case we don't 1088 need to generate a procedure linkage table after all. */ 1089 1090 if (h == NULL) 1091 { 1092 /* The Solaris native assembler will generate a WPLT30 1093 reloc for a local symbol if you assemble a call from 1094 one section to another when using -K pic. We treat 1095 it as WDISP30. */ 1096 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) 1097 goto r_sparc_plt32; 1098 break; 1099 } 1100 1101 h->needs_plt = 1; 1102 1103 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) 1104 goto r_sparc_plt32; 1105 h->plt.refcount += 1; 1106 break; 1107 1108 case R_SPARC_PC10: 1109 case R_SPARC_PC22: 1110 if (h != NULL) 1111 h->non_got_ref = 1; 1112 1113 if (h != NULL 1114 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1115 break; 1116 /* Fall through. */ 1117 1118 case R_SPARC_DISP8: 1119 case R_SPARC_DISP16: 1120 case R_SPARC_DISP32: 1121 case R_SPARC_WDISP30: 1122 case R_SPARC_WDISP22: 1123 case R_SPARC_WDISP19: 1124 case R_SPARC_WDISP16: 1125 case R_SPARC_8: 1126 case R_SPARC_16: 1127 case R_SPARC_32: 1128 case R_SPARC_HI22: 1129 case R_SPARC_22: 1130 case R_SPARC_13: 1131 case R_SPARC_LO10: 1132 case R_SPARC_UA16: 1133 case R_SPARC_UA32: 1134 if (h != NULL) 1135 h->non_got_ref = 1; 1136 1137 r_sparc_plt32: 1138 if (h != NULL && !info->shared) 1139 { 1140 /* We may need a .plt entry if the function this reloc 1141 refers to is in a shared lib. */ 1142 h->plt.refcount += 1; 1143 } 1144 1145 /* If we are creating a shared library, and this is a reloc 1146 against a global symbol, or a non PC relative reloc 1147 against a local symbol, then we need to copy the reloc 1148 into the shared library. However, if we are linking with 1149 -Bsymbolic, we do not need to copy a reloc against a 1150 global symbol which is defined in an object we are 1151 including in the link (i.e., DEF_REGULAR is set). At 1152 this point we have not seen all the input files, so it is 1153 possible that DEF_REGULAR is not set now but will be set 1154 later (it is never cleared). In case of a weak definition, 1155 DEF_REGULAR may be cleared later by a strong definition in 1156 a shared library. We account for that possibility below by 1157 storing information in the relocs_copied field of the hash 1158 table entry. A similar situation occurs when creating 1159 shared libraries and symbol visibility changes render the 1160 symbol local. 1161 1162 If on the other hand, we are creating an executable, we 1163 may need to keep relocations for symbols satisfied by a 1164 dynamic library if we manage to avoid copy relocs for the 1165 symbol. */ 1166 if ((info->shared 1167 && (sec->flags & SEC_ALLOC) != 0 1168 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative 1169 || (h != NULL 1170 && (! info->symbolic 1171 || h->root.type == bfd_link_hash_defweak 1172 || !h->def_regular)))) 1173 || (!info->shared 1174 && (sec->flags & SEC_ALLOC) != 0 1175 && h != NULL 1176 && (h->root.type == bfd_link_hash_defweak 1177 || !h->def_regular))) 1178 { 1179 struct elf32_sparc_dyn_relocs *p; 1180 struct elf32_sparc_dyn_relocs **head; 1181 1182 /* When creating a shared object, we must copy these 1183 relocs into the output file. We create a reloc 1184 section in dynobj and make room for the reloc. */ 1185 if (sreloc == NULL) 1186 { 1187 const char *name; 1188 bfd *dynobj; 1189 1190 name = (bfd_elf_string_from_elf_section 1191 (abfd, 1192 elf_elfheader (abfd)->e_shstrndx, 1193 elf_section_data (sec)->rel_hdr.sh_name)); 1194 if (name == NULL) 1195 return FALSE; 1196 1197 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 1198 && strcmp (bfd_get_section_name (abfd, sec), 1199 name + 5) == 0); 1200 1201 if (htab->elf.dynobj == NULL) 1202 htab->elf.dynobj = abfd; 1203 dynobj = htab->elf.dynobj; 1204 1205 sreloc = bfd_get_section_by_name (dynobj, name); 1206 if (sreloc == NULL) 1207 { 1208 flagword flags; 1209 1210 sreloc = bfd_make_section (dynobj, name); 1211 flags = (SEC_HAS_CONTENTS | SEC_READONLY 1212 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1213 if ((sec->flags & SEC_ALLOC) != 0) 1214 flags |= SEC_ALLOC | SEC_LOAD; 1215 if (sreloc == NULL 1216 || ! bfd_set_section_flags (dynobj, sreloc, flags) 1217 || ! bfd_set_section_alignment (dynobj, sreloc, 2)) 1218 return FALSE; 1219 } 1220 elf_section_data (sec)->sreloc = sreloc; 1221 } 1222 1223 /* If this is a global symbol, we count the number of 1224 relocations we need for this symbol. */ 1225 if (h != NULL) 1226 head = &((struct elf32_sparc_link_hash_entry *) h)->dyn_relocs; 1227 else 1228 { 1229 /* Track dynamic relocs needed for local syms too. 1230 We really need local syms available to do this 1231 easily. Oh well. */ 1232 1233 asection *s; 1234 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, 1235 sec, r_symndx); 1236 if (s == NULL) 1237 return FALSE; 1238 1239 head = ((struct elf32_sparc_dyn_relocs **) 1240 &elf_section_data (s)->local_dynrel); 1241 } 1242 1243 p = *head; 1244 if (p == NULL || p->sec != sec) 1245 { 1246 bfd_size_type amt = sizeof *p; 1247 p = ((struct elf32_sparc_dyn_relocs *) 1248 bfd_alloc (htab->elf.dynobj, amt)); 1249 if (p == NULL) 1250 return FALSE; 1251 p->next = *head; 1252 *head = p; 1253 p->sec = sec; 1254 p->count = 0; 1255 p->pc_count = 0; 1256 } 1257 1258 p->count += 1; 1259 if (_bfd_sparc_elf_howto_table[r_type].pc_relative) 1260 p->pc_count += 1; 1261 } 1262 1263 break; 1264 1265 case R_SPARC_GNU_VTINHERIT: 1266 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1267 return FALSE; 1268 break; 1269 1270 case R_SPARC_GNU_VTENTRY: 1271 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1272 return FALSE; 1273 break; 1274 1275 default: 1276 break; 1277 } 1278 } 1279 1280 return TRUE; 1281} 1282 1283static asection * 1284elf32_sparc_gc_mark_hook (sec, info, rel, h, sym) 1285 asection *sec; 1286 struct bfd_link_info *info ATTRIBUTE_UNUSED; 1287 Elf_Internal_Rela *rel; 1288 struct elf_link_hash_entry *h; 1289 Elf_Internal_Sym *sym; 1290{ 1291 if (h != NULL) 1292 { 1293 switch (ELF32_R_TYPE (rel->r_info)) 1294 { 1295 case R_SPARC_GNU_VTINHERIT: 1296 case R_SPARC_GNU_VTENTRY: 1297 break; 1298 1299 default: 1300 switch (h->root.type) 1301 { 1302 case bfd_link_hash_defined: 1303 case bfd_link_hash_defweak: 1304 return h->root.u.def.section; 1305 1306 case bfd_link_hash_common: 1307 return h->root.u.c.p->section; 1308 1309 default: 1310 break; 1311 } 1312 } 1313 } 1314 else 1315 return bfd_section_from_elf_index (sec->owner, sym->st_shndx); 1316 1317 return NULL; 1318} 1319 1320/* Update the got entry reference counts for the section being removed. */ 1321static bfd_boolean 1322elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs) 1323 bfd *abfd; 1324 struct bfd_link_info *info ATTRIBUTE_UNUSED; 1325 asection *sec; 1326 const Elf_Internal_Rela *relocs; 1327{ 1328 Elf_Internal_Shdr *symtab_hdr; 1329 struct elf_link_hash_entry **sym_hashes; 1330 bfd_signed_vma *local_got_refcounts; 1331 const Elf_Internal_Rela *rel, *relend; 1332 1333 elf_section_data (sec)->local_dynrel = NULL; 1334 1335 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1336 sym_hashes = elf_sym_hashes (abfd); 1337 local_got_refcounts = elf_local_got_refcounts (abfd); 1338 1339 relend = relocs + sec->reloc_count; 1340 for (rel = relocs; rel < relend; rel++) 1341 { 1342 unsigned long r_symndx; 1343 unsigned int r_type; 1344 struct elf_link_hash_entry *h = NULL; 1345 1346 r_symndx = ELF32_R_SYM (rel->r_info); 1347 if (r_symndx >= symtab_hdr->sh_info) 1348 { 1349 struct elf32_sparc_link_hash_entry *eh; 1350 struct elf32_sparc_dyn_relocs **pp; 1351 struct elf32_sparc_dyn_relocs *p; 1352 1353 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1354 eh = (struct elf32_sparc_link_hash_entry *) h; 1355 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 1356 if (p->sec == sec) 1357 { 1358 /* Everything must go for SEC. */ 1359 *pp = p->next; 1360 break; 1361 } 1362 } 1363 1364 r_type = ELF32_R_TYPE (rel->r_info); 1365 r_type = elf32_sparc_tls_transition (info, abfd, r_type, h != NULL); 1366 switch (r_type) 1367 { 1368 case R_SPARC_TLS_LDM_HI22: 1369 case R_SPARC_TLS_LDM_LO10: 1370 if (elf32_sparc_hash_table (info)->tls_ldm_got.refcount > 0) 1371 elf32_sparc_hash_table (info)->tls_ldm_got.refcount -= 1; 1372 break; 1373 1374 case R_SPARC_TLS_GD_HI22: 1375 case R_SPARC_TLS_GD_LO10: 1376 case R_SPARC_TLS_IE_HI22: 1377 case R_SPARC_TLS_IE_LO10: 1378 case R_SPARC_GOT10: 1379 case R_SPARC_GOT13: 1380 case R_SPARC_GOT22: 1381 if (h != NULL) 1382 { 1383 if (h->got.refcount > 0) 1384 h->got.refcount--; 1385 } 1386 else 1387 { 1388 if (local_got_refcounts[r_symndx] > 0) 1389 local_got_refcounts[r_symndx]--; 1390 } 1391 break; 1392 1393 case R_SPARC_PC10: 1394 case R_SPARC_PC22: 1395 if (h != NULL 1396 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1397 break; 1398 /* Fall through. */ 1399 1400 case R_SPARC_DISP8: 1401 case R_SPARC_DISP16: 1402 case R_SPARC_DISP32: 1403 case R_SPARC_WDISP30: 1404 case R_SPARC_WDISP22: 1405 case R_SPARC_WDISP19: 1406 case R_SPARC_WDISP16: 1407 case R_SPARC_8: 1408 case R_SPARC_16: 1409 case R_SPARC_32: 1410 case R_SPARC_HI22: 1411 case R_SPARC_22: 1412 case R_SPARC_13: 1413 case R_SPARC_LO10: 1414 case R_SPARC_UA16: 1415 case R_SPARC_UA32: 1416 case R_SPARC_PLT32: 1417 if (info->shared) 1418 break; 1419 /* Fall through. */ 1420 1421 case R_SPARC_WPLT30: 1422 if (h != NULL) 1423 { 1424 if (h->plt.refcount > 0) 1425 h->plt.refcount--; 1426 } 1427 break; 1428 1429 default: 1430 break; 1431 } 1432 } 1433 1434 return TRUE; 1435} 1436 1437/* Adjust a symbol defined by a dynamic object and referenced by a 1438 regular object. The current definition is in some section of the 1439 dynamic object, but we're not including those sections. We have to 1440 change the definition to something the rest of the link can 1441 understand. */ 1442 1443static bfd_boolean 1444elf32_sparc_adjust_dynamic_symbol (info, h) 1445 struct bfd_link_info *info; 1446 struct elf_link_hash_entry *h; 1447{ 1448 struct elf32_sparc_link_hash_table *htab; 1449 struct elf32_sparc_link_hash_entry * eh; 1450 struct elf32_sparc_dyn_relocs *p; 1451 asection *s; 1452 unsigned int power_of_two; 1453 1454 htab = elf32_sparc_hash_table (info); 1455 1456 /* Make sure we know what is going on here. */ 1457 BFD_ASSERT (htab->elf.dynobj != NULL 1458 && (h->needs_plt 1459 || h->u.weakdef != NULL 1460 || (h->def_dynamic 1461 && h->ref_regular 1462 && !h->def_regular))); 1463 1464 /* If this is a function, put it in the procedure linkage table. We 1465 will fill in the contents of the procedure linkage table later 1466 (although we could actually do it here). The STT_NOTYPE 1467 condition is a hack specifically for the Oracle libraries 1468 delivered for Solaris; for some inexplicable reason, they define 1469 some of their functions as STT_NOTYPE when they really should be 1470 STT_FUNC. */ 1471 if (h->type == STT_FUNC 1472 || h->needs_plt 1473 || (h->type == STT_NOTYPE 1474 && (h->root.type == bfd_link_hash_defined 1475 || h->root.type == bfd_link_hash_defweak) 1476 && (h->root.u.def.section->flags & SEC_CODE) != 0)) 1477 { 1478 if (h->plt.refcount <= 0 1479 || (! info->shared 1480 && !h->def_dynamic 1481 && !h->ref_dynamic 1482 && h->root.type != bfd_link_hash_undefweak 1483 && h->root.type != bfd_link_hash_undefined)) 1484 { 1485 /* This case can occur if we saw a WPLT30 reloc in an input 1486 file, but the symbol was never referred to by a dynamic 1487 object, or if all references were garbage collected. In 1488 such a case, we don't actually need to build a procedure 1489 linkage table, and we can just do a WDISP30 reloc instead. */ 1490 h->plt.offset = (bfd_vma) -1; 1491 h->needs_plt = 0; 1492 } 1493 1494 return TRUE; 1495 } 1496 else 1497 h->plt.offset = (bfd_vma) -1; 1498 1499 /* If this is a weak symbol, and there is a real definition, the 1500 processor independent code will have arranged for us to see the 1501 real definition first, and we can just use the same value. */ 1502 if (h->u.weakdef != NULL) 1503 { 1504 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1505 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1506 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1507 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1508 return TRUE; 1509 } 1510 1511 /* This is a reference to a symbol defined by a dynamic object which 1512 is not a function. */ 1513 1514 /* If we are creating a shared library, we must presume that the 1515 only references to the symbol are via the global offset table. 1516 For such cases we need not do anything here; the relocations will 1517 be handled correctly by relocate_section. */ 1518 if (info->shared) 1519 return TRUE; 1520 1521 /* If there are no references to this symbol that do not use the 1522 GOT, we don't need to generate a copy reloc. */ 1523 if (!h->non_got_ref) 1524 return TRUE; 1525 1526 eh = (struct elf32_sparc_link_hash_entry *) h; 1527 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1528 { 1529 s = p->sec->output_section; 1530 if (s != NULL && (s->flags & SEC_READONLY) != 0) 1531 break; 1532 } 1533 1534 /* If we didn't find any dynamic relocs in read-only sections, then 1535 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 1536 if (p == NULL) 1537 { 1538 h->non_got_ref = 0; 1539 return TRUE; 1540 } 1541 1542 /* We must allocate the symbol in our .dynbss section, which will 1543 become part of the .bss section of the executable. There will be 1544 an entry for this symbol in the .dynsym section. The dynamic 1545 object will contain position independent code, so all references 1546 from the dynamic object to this symbol will go through the global 1547 offset table. The dynamic linker will use the .dynsym entry to 1548 determine the address it must put in the global offset table, so 1549 both the dynamic object and the regular object will refer to the 1550 same memory location for the variable. */ 1551 1552 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker 1553 to copy the initial value out of the dynamic object and into the 1554 runtime process image. We need to remember the offset into the 1555 .rel.bss section we are going to use. */ 1556 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) 1557 { 1558 htab->srelbss->size += sizeof (Elf32_External_Rela); 1559 h->needs_copy = 1; 1560 } 1561 1562 /* We need to figure out the alignment required for this symbol. I 1563 have no idea how ELF linkers handle this. */ 1564 power_of_two = bfd_log2 (h->size); 1565 if (power_of_two > 3) 1566 power_of_two = 3; 1567 1568 /* Apply the required alignment. */ 1569 s = htab->sdynbss; 1570 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); 1571 if (power_of_two > bfd_get_section_alignment (dynobj, s)) 1572 { 1573 if (! bfd_set_section_alignment (dynobj, s, power_of_two)) 1574 return FALSE; 1575 } 1576 1577 /* Define the symbol as being at this point in the section. */ 1578 h->root.u.def.section = s; 1579 h->root.u.def.value = s->size; 1580 1581 /* Increment the section size to make room for the symbol. */ 1582 s->size += h->size; 1583 1584 return TRUE; 1585} 1586 1587/* Allocate space in .plt, .got and associated reloc sections for 1588 dynamic relocs. */ 1589 1590static bfd_boolean 1591allocate_dynrelocs (h, inf) 1592 struct elf_link_hash_entry *h; 1593 PTR inf; 1594{ 1595 struct bfd_link_info *info; 1596 struct elf32_sparc_link_hash_table *htab; 1597 struct elf32_sparc_link_hash_entry *eh; 1598 struct elf32_sparc_dyn_relocs *p; 1599 1600 if (h->root.type == bfd_link_hash_indirect) 1601 return TRUE; 1602 1603 if (h->root.type == bfd_link_hash_warning) 1604 /* When warning symbols are created, they **replace** the "real" 1605 entry in the hash table, thus we never get to see the real 1606 symbol in a hash traversal. So look at it now. */ 1607 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1608 1609 info = (struct bfd_link_info *) inf; 1610 htab = elf32_sparc_hash_table (info); 1611 1612 if (htab->elf.dynamic_sections_created 1613 && h->plt.refcount > 0) 1614 { 1615 /* Make sure this symbol is output as a dynamic symbol. 1616 Undefined weak syms won't yet be marked as dynamic. */ 1617 if (h->dynindx == -1 1618 && !h->forced_local) 1619 { 1620 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1621 return FALSE; 1622 } 1623 1624 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 1625 { 1626 asection *s = htab->splt; 1627 1628 /* The first four entries in .plt are reserved. */ 1629 if (s->size == 0) 1630 s->size = 4 * PLT_ENTRY_SIZE; 1631 1632 /* The procedure linkage table has a maximum size. */ 1633 if (s->size >= 0x400000) 1634 { 1635 bfd_set_error (bfd_error_bad_value); 1636 return FALSE; 1637 } 1638 1639 h->plt.offset = s->size; 1640 1641 /* If this symbol is not defined in a regular file, and we are 1642 not generating a shared library, then set the symbol to this 1643 location in the .plt. This is required to make function 1644 pointers compare as equal between the normal executable and 1645 the shared library. */ 1646 if (! info->shared 1647 && !h->def_regular) 1648 { 1649 h->root.u.def.section = s; 1650 h->root.u.def.value = h->plt.offset; 1651 } 1652 1653 /* Make room for this entry. */ 1654 s->size += PLT_ENTRY_SIZE; 1655 1656 /* We also need to make an entry in the .rela.plt section. */ 1657 htab->srelplt->size += sizeof (Elf32_External_Rela); 1658 } 1659 else 1660 { 1661 h->plt.offset = (bfd_vma) -1; 1662 h->needs_plt = 0; 1663 } 1664 } 1665 else 1666 { 1667 h->plt.offset = (bfd_vma) -1; 1668 h->needs_plt = 0; 1669 } 1670 1671 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary, 1672 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */ 1673 if (h->got.refcount > 0 1674 && !info->shared 1675 && h->dynindx == -1 1676 && elf32_sparc_hash_entry(h)->tls_type == GOT_TLS_IE) 1677 h->got.offset = (bfd_vma) -1; 1678 else if (h->got.refcount > 0) 1679 { 1680 asection *s; 1681 bfd_boolean dyn; 1682 int tls_type = elf32_sparc_hash_entry(h)->tls_type; 1683 1684 /* Make sure this symbol is output as a dynamic symbol. 1685 Undefined weak syms won't yet be marked as dynamic. */ 1686 if (h->dynindx == -1 1687 && !h->forced_local) 1688 { 1689 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1690 return FALSE; 1691 } 1692 1693 s = htab->sgot; 1694 h->got.offset = s->size; 1695 s->size += 4; 1696 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */ 1697 if (tls_type == GOT_TLS_GD) 1698 s->size += 4; 1699 dyn = htab->elf.dynamic_sections_created; 1700 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation, 1701 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if 1702 global. */ 1703 if ((tls_type == GOT_TLS_GD && h->dynindx == -1) 1704 || tls_type == GOT_TLS_IE) 1705 htab->srelgot->size += sizeof (Elf32_External_Rela); 1706 else if (tls_type == GOT_TLS_GD) 1707 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela); 1708 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 1709 htab->srelgot->size += sizeof (Elf32_External_Rela); 1710 } 1711 else 1712 h->got.offset = (bfd_vma) -1; 1713 1714 eh = (struct elf32_sparc_link_hash_entry *) h; 1715 if (eh->dyn_relocs == NULL) 1716 return TRUE; 1717 1718 /* In the shared -Bsymbolic case, discard space allocated for 1719 dynamic pc-relative relocs against symbols which turn out to be 1720 defined in regular objects. For the normal shared case, discard 1721 space for pc-relative relocs that have become local due to symbol 1722 visibility changes. */ 1723 1724 if (info->shared) 1725 { 1726 if (h->def_regular 1727 && (h->forced_local 1728 || info->symbolic)) 1729 { 1730 struct elf32_sparc_dyn_relocs **pp; 1731 1732 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 1733 { 1734 p->count -= p->pc_count; 1735 p->pc_count = 0; 1736 if (p->count == 0) 1737 *pp = p->next; 1738 else 1739 pp = &p->next; 1740 } 1741 } 1742 } 1743 else 1744 { 1745 /* For the non-shared case, discard space for relocs against 1746 symbols which turn out to need copy relocs or are not 1747 dynamic. */ 1748 1749 if (!h->non_got_ref 1750 && ((h->def_dynamic 1751 && !h->def_regular) 1752 || (htab->elf.dynamic_sections_created 1753 && (h->root.type == bfd_link_hash_undefweak 1754 || h->root.type == bfd_link_hash_undefined)))) 1755 { 1756 /* Make sure this symbol is output as a dynamic symbol. 1757 Undefined weak syms won't yet be marked as dynamic. */ 1758 if (h->dynindx == -1 1759 && !h->forced_local) 1760 { 1761 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1762 return FALSE; 1763 } 1764 1765 /* If that succeeded, we know we'll be keeping all the 1766 relocs. */ 1767 if (h->dynindx != -1) 1768 goto keep; 1769 } 1770 1771 eh->dyn_relocs = NULL; 1772 1773 keep: ; 1774 } 1775 1776 /* Finally, allocate space. */ 1777 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1778 { 1779 asection *sreloc = elf_section_data (p->sec)->sreloc; 1780 sreloc->size += p->count * sizeof (Elf32_External_Rela); 1781 } 1782 1783 return TRUE; 1784} 1785 1786/* Find any dynamic relocs that apply to read-only sections. */ 1787 1788static bfd_boolean 1789readonly_dynrelocs (h, inf) 1790 struct elf_link_hash_entry *h; 1791 PTR inf; 1792{ 1793 struct elf32_sparc_link_hash_entry *eh; 1794 struct elf32_sparc_dyn_relocs *p; 1795 1796 if (h->root.type == bfd_link_hash_warning) 1797 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1798 1799 eh = (struct elf32_sparc_link_hash_entry *) h; 1800 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1801 { 1802 asection *s = p->sec->output_section; 1803 1804 if (s != NULL && (s->flags & SEC_READONLY) != 0) 1805 { 1806 struct bfd_link_info *info = (struct bfd_link_info *) inf; 1807 1808 info->flags |= DF_TEXTREL; 1809 1810 /* Not an error, just cut short the traversal. */ 1811 return FALSE; 1812 } 1813 } 1814 return TRUE; 1815} 1816 1817/* Set the sizes of the dynamic sections. */ 1818 1819static bfd_boolean 1820elf32_sparc_size_dynamic_sections (output_bfd, info) 1821 bfd *output_bfd ATTRIBUTE_UNUSED; 1822 struct bfd_link_info *info; 1823{ 1824 struct elf32_sparc_link_hash_table *htab; 1825 bfd *dynobj; 1826 asection *s; 1827 bfd *ibfd; 1828 1829 htab = elf32_sparc_hash_table (info); 1830 dynobj = htab->elf.dynobj; 1831 BFD_ASSERT (dynobj != NULL); 1832 1833 if (elf_hash_table (info)->dynamic_sections_created) 1834 { 1835 /* Set the contents of the .interp section to the interpreter. */ 1836 if (info->executable) 1837 { 1838 s = bfd_get_section_by_name (dynobj, ".interp"); 1839 BFD_ASSERT (s != NULL); 1840 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 1841 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 1842 } 1843 } 1844 1845 /* Set up .got offsets for local syms, and space for local dynamic 1846 relocs. */ 1847 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 1848 { 1849 bfd_signed_vma *local_got; 1850 bfd_signed_vma *end_local_got; 1851 char *local_tls_type; 1852 bfd_size_type locsymcount; 1853 Elf_Internal_Shdr *symtab_hdr; 1854 asection *srel; 1855 1856 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 1857 continue; 1858 1859 for (s = ibfd->sections; s != NULL; s = s->next) 1860 { 1861 struct elf32_sparc_dyn_relocs *p; 1862 1863 for (p = *((struct elf32_sparc_dyn_relocs **) 1864 &elf_section_data (s)->local_dynrel); 1865 p != NULL; 1866 p = p->next) 1867 { 1868 if (!bfd_is_abs_section (p->sec) 1869 && bfd_is_abs_section (p->sec->output_section)) 1870 { 1871 /* Input section has been discarded, either because 1872 it is a copy of a linkonce section or due to 1873 linker script /DISCARD/, so we'll be discarding 1874 the relocs too. */ 1875 } 1876 else if (p->count != 0) 1877 { 1878 srel = elf_section_data (p->sec)->sreloc; 1879 srel->size += p->count * sizeof (Elf32_External_Rela); 1880 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 1881 info->flags |= DF_TEXTREL; 1882 } 1883 } 1884 } 1885 1886 local_got = elf_local_got_refcounts (ibfd); 1887 if (!local_got) 1888 continue; 1889 1890 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 1891 locsymcount = symtab_hdr->sh_info; 1892 end_local_got = local_got + locsymcount; 1893 local_tls_type = elf32_sparc_local_got_tls_type (ibfd); 1894 s = htab->sgot; 1895 srel = htab->srelgot; 1896 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 1897 { 1898 if (*local_got > 0) 1899 { 1900 *local_got = s->size; 1901 s->size += 4; 1902 if (*local_tls_type == GOT_TLS_GD) 1903 s->size += 4; 1904 if (info->shared 1905 || *local_tls_type == GOT_TLS_GD 1906 || *local_tls_type == GOT_TLS_IE) 1907 srel->size += sizeof (Elf32_External_Rela); 1908 } 1909 else 1910 *local_got = (bfd_vma) -1; 1911 } 1912 } 1913 1914 if (htab->tls_ldm_got.refcount > 0) 1915 { 1916 /* Allocate 2 got entries and 1 dynamic reloc for 1917 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */ 1918 htab->tls_ldm_got.offset = htab->sgot->size; 1919 htab->sgot->size += 8; 1920 htab->srelgot->size += sizeof (Elf32_External_Rela); 1921 } 1922 else 1923 htab->tls_ldm_got.offset = -1; 1924 1925 /* Allocate global sym .plt and .got entries, and space for global 1926 sym dynamic relocs. */ 1927 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); 1928 1929 if (elf_hash_table (info)->dynamic_sections_created) 1930 { 1931 /* Make space for the trailing nop in .plt. */ 1932 if (htab->splt->size > 0) 1933 htab->splt->size += 4; 1934 1935 /* If the .got section is more than 0x1000 bytes, we add 1936 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 1937 bit relocations have a greater chance of working. */ 1938 if (htab->sgot->size >= 0x1000 1939 && elf_hash_table (info)->hgot->root.u.def.value == 0) 1940 elf_hash_table (info)->hgot->root.u.def.value = 0x1000; 1941 } 1942 1943 /* The check_relocs and adjust_dynamic_symbol entry points have 1944 determined the sizes of the various dynamic sections. Allocate 1945 memory for them. */ 1946 for (s = dynobj->sections; s != NULL; s = s->next) 1947 { 1948 const char *name; 1949 bfd_boolean strip = FALSE; 1950 1951 if ((s->flags & SEC_LINKER_CREATED) == 0) 1952 continue; 1953 1954 /* It's OK to base decisions on the section name, because none 1955 of the dynobj section names depend upon the input files. */ 1956 name = bfd_get_section_name (dynobj, s); 1957 1958 if (strncmp (name, ".rela", 5) == 0) 1959 { 1960 if (s->size == 0) 1961 { 1962 /* If we don't need this section, strip it from the 1963 output file. This is to handle .rela.bss and 1964 .rel.plt. We must create it in 1965 create_dynamic_sections, because it must be created 1966 before the linker maps input sections to output 1967 sections. The linker does that before 1968 adjust_dynamic_symbol is called, and it is that 1969 function which decides whether anything needs to go 1970 into these sections. */ 1971 strip = TRUE; 1972 } 1973 else 1974 { 1975 /* We use the reloc_count field as a counter if we need 1976 to copy relocs into the output file. */ 1977 s->reloc_count = 0; 1978 } 1979 } 1980 else if (s != htab->splt && s != htab->sgot) 1981 { 1982 /* It's not one of our sections, so don't allocate space. */ 1983 continue; 1984 } 1985 1986 if (strip) 1987 { 1988 _bfd_strip_section_from_output (info, s); 1989 continue; 1990 } 1991 1992 /* Allocate memory for the section contents. */ 1993 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. 1994 Unused entries should be reclaimed before the section's contents 1995 are written out, but at the moment this does not happen. Thus in 1996 order to prevent writing out garbage, we initialise the section's 1997 contents to zero. */ 1998 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 1999 if (s->contents == NULL && s->size != 0) 2000 return FALSE; 2001 } 2002 2003 if (elf_hash_table (info)->dynamic_sections_created) 2004 { 2005 /* Add some entries to the .dynamic section. We fill in the 2006 values later, in elf32_sparc_finish_dynamic_sections, but we 2007 must add the entries now so that we get the correct size for 2008 the .dynamic section. The DT_DEBUG entry is filled in by the 2009 dynamic linker and used by the debugger. */ 2010#define add_dynamic_entry(TAG, VAL) \ 2011 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2012 2013 if (info->executable) 2014 { 2015 if (!add_dynamic_entry (DT_DEBUG, 0)) 2016 return FALSE; 2017 } 2018 2019 if (htab->srelplt->size != 0) 2020 { 2021 if (!add_dynamic_entry (DT_PLTGOT, 0) 2022 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2023 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2024 || !add_dynamic_entry (DT_JMPREL, 0)) 2025 return FALSE; 2026 } 2027 2028 if (!add_dynamic_entry (DT_RELA, 0) 2029 || !add_dynamic_entry (DT_RELASZ, 0) 2030 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) 2031 return FALSE; 2032 2033 /* If any dynamic relocs apply to a read-only section, 2034 then we need a DT_TEXTREL entry. */ 2035 if ((info->flags & DF_TEXTREL) == 0) 2036 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, 2037 (PTR) info); 2038 2039 if (info->flags & DF_TEXTREL) 2040 { 2041 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2042 return FALSE; 2043 } 2044 } 2045#undef add_dynamic_entry 2046 2047 return TRUE; 2048} 2049 2050struct elf32_sparc_section_data 2051{ 2052 struct bfd_elf_section_data elf; 2053 unsigned int do_relax; 2054}; 2055 2056#define sec_do_relax(sec) \ 2057 ((struct elf32_sparc_section_data *) elf_section_data (sec))->do_relax 2058 2059static bfd_boolean 2060elf32_sparc_new_section_hook (abfd, sec) 2061 bfd *abfd; 2062 asection *sec; 2063{ 2064 struct elf32_sparc_section_data *sdata; 2065 bfd_size_type amt = sizeof (*sdata); 2066 2067 sdata = (struct elf32_sparc_section_data *) bfd_zalloc (abfd, amt); 2068 if (sdata == NULL) 2069 return FALSE; 2070 sec->used_by_bfd = (PTR) sdata; 2071 2072 return _bfd_elf_new_section_hook (abfd, sec); 2073} 2074 2075static bfd_boolean 2076elf32_sparc_relax_section (abfd, section, link_info, again) 2077 bfd *abfd ATTRIBUTE_UNUSED; 2078 asection *section ATTRIBUTE_UNUSED; 2079 struct bfd_link_info *link_info ATTRIBUTE_UNUSED; 2080 bfd_boolean *again; 2081{ 2082 *again = FALSE; 2083 sec_do_relax (section) = 1; 2084 return TRUE; 2085} 2086 2087/* Return the base VMA address which should be subtracted from real addresses 2088 when resolving @dtpoff relocation. 2089 This is PT_TLS segment p_vaddr. */ 2090 2091static bfd_vma 2092dtpoff_base (info) 2093 struct bfd_link_info *info; 2094{ 2095 /* If tls_sec is NULL, we should have signalled an error already. */ 2096 if (elf_hash_table (info)->tls_sec == NULL) 2097 return 0; 2098 return elf_hash_table (info)->tls_sec->vma; 2099} 2100 2101/* Return the relocation value for @tpoff relocation 2102 if STT_TLS virtual address is ADDRESS. */ 2103 2104static bfd_vma 2105tpoff (info, address) 2106 struct bfd_link_info *info; 2107 bfd_vma address; 2108{ 2109 struct elf_link_hash_table *htab = elf_hash_table (info); 2110 2111 /* If tls_sec is NULL, we should have signalled an error already. */ 2112 if (htab->tls_sec == NULL) 2113 return 0; 2114 return address - htab->tls_size - htab->tls_sec->vma; 2115} 2116 2117/* Relocate a SPARC ELF section. */ 2118 2119static bfd_boolean 2120elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section, 2121 contents, relocs, local_syms, local_sections) 2122 bfd *output_bfd; 2123 struct bfd_link_info *info; 2124 bfd *input_bfd; 2125 asection *input_section; 2126 bfd_byte *contents; 2127 Elf_Internal_Rela *relocs; 2128 Elf_Internal_Sym *local_syms; 2129 asection **local_sections; 2130{ 2131 struct elf32_sparc_link_hash_table *htab; 2132 Elf_Internal_Shdr *symtab_hdr; 2133 struct elf_link_hash_entry **sym_hashes; 2134 bfd_vma *local_got_offsets; 2135 bfd_vma got_base; 2136 asection *sreloc; 2137 Elf_Internal_Rela *rel; 2138 Elf_Internal_Rela *relend; 2139 2140 if (info->relocatable) 2141 return TRUE; 2142 2143 htab = elf32_sparc_hash_table (info); 2144 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2145 sym_hashes = elf_sym_hashes (input_bfd); 2146 local_got_offsets = elf_local_got_offsets (input_bfd); 2147 2148 if (elf_hash_table (info)->hgot == NULL) 2149 got_base = 0; 2150 else 2151 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2152 2153 sreloc = elf_section_data (input_section)->sreloc; 2154 2155 rel = relocs; 2156 relend = relocs + input_section->reloc_count; 2157 for (; rel < relend; rel++) 2158 { 2159 int r_type, tls_type; 2160 reloc_howto_type *howto; 2161 unsigned long r_symndx; 2162 struct elf_link_hash_entry *h; 2163 Elf_Internal_Sym *sym; 2164 asection *sec; 2165 bfd_vma relocation, off; 2166 bfd_reloc_status_type r; 2167 bfd_boolean is_plt = FALSE; 2168 bfd_boolean unresolved_reloc; 2169 2170 r_type = ELF32_R_TYPE (rel->r_info); 2171 2172 if (r_type == R_SPARC_GNU_VTINHERIT 2173 || r_type == R_SPARC_GNU_VTENTRY) 2174 continue; 2175 2176 if (r_type < 0 || r_type >= (int) R_SPARC_max_std) 2177 { 2178 bfd_set_error (bfd_error_bad_value); 2179 return FALSE; 2180 } 2181 howto = _bfd_sparc_elf_howto_table + r_type; 2182 2183 /* This is a final link. */ 2184 r_symndx = ELF32_R_SYM (rel->r_info); 2185 h = NULL; 2186 sym = NULL; 2187 sec = NULL; 2188 unresolved_reloc = FALSE; 2189 if (r_symndx < symtab_hdr->sh_info) 2190 { 2191 sym = local_syms + r_symndx; 2192 sec = local_sections[r_symndx]; 2193 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2194 } 2195 else 2196 { 2197 bfd_boolean warned ATTRIBUTE_UNUSED; 2198 2199 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2200 r_symndx, symtab_hdr, sym_hashes, 2201 h, sec, relocation, 2202 unresolved_reloc, warned); 2203 } 2204 2205 switch (r_type) 2206 { 2207 case R_SPARC_GOT10: 2208 case R_SPARC_GOT13: 2209 case R_SPARC_GOT22: 2210 /* Relocation is to the entry for this symbol in the global 2211 offset table. */ 2212 if (htab->sgot == NULL) 2213 abort (); 2214 2215 if (h != NULL) 2216 { 2217 bfd_boolean dyn; 2218 2219 off = h->got.offset; 2220 BFD_ASSERT (off != (bfd_vma) -1); 2221 dyn = elf_hash_table (info)->dynamic_sections_created; 2222 2223 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2224 || (info->shared 2225 && (info->symbolic 2226 || h->dynindx == -1 2227 || h->forced_local) 2228 && h->def_regular)) 2229 { 2230 /* This is actually a static link, or it is a 2231 -Bsymbolic link and the symbol is defined 2232 locally, or the symbol was forced to be local 2233 because of a version file. We must initialize 2234 this entry in the global offset table. Since the 2235 offset must always be a multiple of 4, we use the 2236 least significant bit to record whether we have 2237 initialized it already. 2238 2239 When doing a dynamic link, we create a .rela.got 2240 relocation entry to initialize the value. This 2241 is done in the finish_dynamic_symbol routine. */ 2242 if ((off & 1) != 0) 2243 off &= ~1; 2244 else 2245 { 2246 bfd_put_32 (output_bfd, relocation, 2247 htab->sgot->contents + off); 2248 h->got.offset |= 1; 2249 } 2250 } 2251 else 2252 unresolved_reloc = FALSE; 2253 } 2254 else 2255 { 2256 BFD_ASSERT (local_got_offsets != NULL 2257 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2258 2259 off = local_got_offsets[r_symndx]; 2260 2261 /* The offset must always be a multiple of 4. We use 2262 the least significant bit to record whether we have 2263 already processed this entry. */ 2264 if ((off & 1) != 0) 2265 off &= ~1; 2266 else 2267 { 2268 2269 if (info->shared) 2270 { 2271 asection *s; 2272 Elf_Internal_Rela outrel; 2273 bfd_byte *loc; 2274 2275 /* We need to generate a R_SPARC_RELATIVE reloc 2276 for the dynamic linker. */ 2277 s = htab->srelgot; 2278 BFD_ASSERT (s != NULL); 2279 2280 outrel.r_offset = (htab->sgot->output_section->vma 2281 + htab->sgot->output_offset 2282 + off); 2283 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); 2284 outrel.r_addend = relocation; 2285 relocation = 0; 2286 loc = s->contents; 2287 loc += s->reloc_count++ * sizeof (Elf32_External_Rela); 2288 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 2289 } 2290 2291 bfd_put_32 (output_bfd, relocation, 2292 htab->sgot->contents + off); 2293 local_got_offsets[r_symndx] |= 1; 2294 } 2295 } 2296 relocation = htab->sgot->output_offset + off - got_base; 2297 break; 2298 2299 case R_SPARC_PLT32: 2300 if (h == NULL || h->plt.offset == (bfd_vma) -1) 2301 { 2302 r_type = R_SPARC_32; 2303 goto r_sparc_plt32; 2304 } 2305 /* Fall through. */ 2306 case R_SPARC_WPLT30: 2307 r_sparc_wplt30: 2308 /* Relocation is to the entry for this symbol in the 2309 procedure linkage table. */ 2310 2311 /* The Solaris native assembler will generate a WPLT30 reloc 2312 for a local symbol if you assemble a call from one 2313 section to another when using -K pic. We treat it as 2314 WDISP30. */ 2315 if (h == NULL) 2316 break; 2317 2318 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL) 2319 { 2320 /* We didn't make a PLT entry for this symbol. This 2321 happens when statically linking PIC code, or when 2322 using -Bsymbolic. */ 2323 break; 2324 } 2325 2326 relocation = (htab->splt->output_section->vma 2327 + htab->splt->output_offset 2328 + h->plt.offset); 2329 unresolved_reloc = FALSE; 2330 if (r_type == R_SPARC_PLT32) 2331 { 2332 r_type = R_SPARC_32; 2333 is_plt = TRUE; 2334 goto r_sparc_plt32; 2335 } 2336 break; 2337 2338 case R_SPARC_PC10: 2339 case R_SPARC_PC22: 2340 if (h != NULL 2341 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2342 break; 2343 /* Fall through. */ 2344 case R_SPARC_DISP8: 2345 case R_SPARC_DISP16: 2346 case R_SPARC_DISP32: 2347 case R_SPARC_WDISP30: 2348 case R_SPARC_WDISP22: 2349 case R_SPARC_WDISP19: 2350 case R_SPARC_WDISP16: 2351 case R_SPARC_8: 2352 case R_SPARC_16: 2353 case R_SPARC_32: 2354 case R_SPARC_HI22: 2355 case R_SPARC_22: 2356 case R_SPARC_13: 2357 case R_SPARC_LO10: 2358 case R_SPARC_UA16: 2359 case R_SPARC_UA32: 2360 r_sparc_plt32: 2361 /* r_symndx will be zero only for relocs against symbols 2362 from removed linkonce sections, or sections discarded by 2363 a linker script. */ 2364 if (r_symndx == 0 2365 || (input_section->flags & SEC_ALLOC) == 0) 2366 break; 2367 2368 if ((info->shared 2369 && (h == NULL 2370 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 2371 || h->root.type != bfd_link_hash_undefweak) 2372 && (! howto->pc_relative 2373 || (h != NULL 2374 && h->dynindx != -1 2375 && (! info->symbolic 2376 || !h->def_regular)))) 2377 || (!info->shared 2378 && h != NULL 2379 && h->dynindx != -1 2380 && !h->non_got_ref 2381 && ((h->def_dynamic 2382 && !h->def_regular) 2383 || h->root.type == bfd_link_hash_undefweak 2384 || h->root.type == bfd_link_hash_undefined))) 2385 { 2386 Elf_Internal_Rela outrel; 2387 bfd_byte *loc; 2388 bfd_boolean skip, relocate = FALSE; 2389 2390 /* When generating a shared object, these relocations 2391 are copied into the output file to be resolved at run 2392 time. */ 2393 2394 BFD_ASSERT (sreloc != NULL); 2395 2396 skip = FALSE; 2397 2398 outrel.r_offset = 2399 _bfd_elf_section_offset (output_bfd, info, input_section, 2400 rel->r_offset); 2401 if (outrel.r_offset == (bfd_vma) -1) 2402 skip = TRUE; 2403 else if (outrel.r_offset == (bfd_vma) -2) 2404 skip = TRUE, relocate = TRUE; 2405 outrel.r_offset += (input_section->output_section->vma 2406 + input_section->output_offset); 2407 2408 /* Optimize unaligned reloc usage now that we know where 2409 it finally resides. */ 2410 switch (r_type) 2411 { 2412 case R_SPARC_16: 2413 if (outrel.r_offset & 1) 2414 r_type = R_SPARC_UA16; 2415 break; 2416 case R_SPARC_UA16: 2417 if (!(outrel.r_offset & 1)) 2418 r_type = R_SPARC_16; 2419 break; 2420 case R_SPARC_32: 2421 if (outrel.r_offset & 3) 2422 r_type = R_SPARC_UA32; 2423 break; 2424 case R_SPARC_UA32: 2425 if (!(outrel.r_offset & 3)) 2426 r_type = R_SPARC_32; 2427 break; 2428 case R_SPARC_DISP8: 2429 case R_SPARC_DISP16: 2430 case R_SPARC_DISP32: 2431 /* If the symbol is not dynamic, we should not keep 2432 a dynamic relocation. But an .rela.* slot has been 2433 allocated for it, output R_SPARC_NONE. 2434 FIXME: Add code tracking needed dynamic relocs as 2435 e.g. i386 has. */ 2436 if (h->dynindx == -1) 2437 skip = TRUE, relocate = TRUE; 2438 break; 2439 } 2440 2441 if (skip) 2442 memset (&outrel, 0, sizeof outrel); 2443 /* h->dynindx may be -1 if the symbol was marked to 2444 become local. */ 2445 else if (h != NULL && ! is_plt 2446 && ((! info->symbolic && h->dynindx != -1) 2447 || !h->def_regular)) 2448 { 2449 BFD_ASSERT (h->dynindx != -1); 2450 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2451 outrel.r_addend = rel->r_addend; 2452 } 2453 else 2454 { 2455 if (r_type == R_SPARC_32) 2456 { 2457 outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); 2458 outrel.r_addend = relocation + rel->r_addend; 2459 } 2460 else 2461 { 2462 long indx; 2463 2464 if (is_plt) 2465 sec = htab->splt; 2466 2467 if (bfd_is_abs_section (sec)) 2468 indx = 0; 2469 else if (sec == NULL || sec->owner == NULL) 2470 { 2471 bfd_set_error (bfd_error_bad_value); 2472 return FALSE; 2473 } 2474 else 2475 { 2476 asection *osec; 2477 2478 osec = sec->output_section; 2479 indx = elf_section_data (osec)->dynindx; 2480 2481 /* FIXME: we really should be able to link non-pic 2482 shared libraries. */ 2483 if (indx == 0) 2484 { 2485 BFD_FAIL (); 2486 (*_bfd_error_handler) 2487 (_("%B: probably compiled without -fPIC?"), 2488 input_bfd); 2489 bfd_set_error (bfd_error_bad_value); 2490 return FALSE; 2491 } 2492 } 2493 2494 outrel.r_info = ELF32_R_INFO (indx, r_type); 2495 outrel.r_addend = relocation + rel->r_addend; 2496 } 2497 } 2498 2499 loc = sreloc->contents; 2500 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); 2501 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 2502 2503 /* This reloc will be computed at runtime, so there's no 2504 need to do anything now. */ 2505 if (! relocate) 2506 continue; 2507 } 2508 break; 2509 2510 case R_SPARC_TLS_GD_HI22: 2511 if (! elf32_sparc_tdata (input_bfd)->has_tlsgd) 2512 { 2513 /* R_SPARC_REV32 used the same reloc number as 2514 R_SPARC_TLS_GD_HI22. */ 2515 r_type = R_SPARC_REV32; 2516 break; 2517 } 2518 /* Fall through */ 2519 2520 case R_SPARC_TLS_GD_LO10: 2521 case R_SPARC_TLS_IE_HI22: 2522 case R_SPARC_TLS_IE_LO10: 2523 r_type = elf32_sparc_tls_transition (info, input_bfd, r_type, 2524 h == NULL); 2525 tls_type = GOT_UNKNOWN; 2526 if (h == NULL && local_got_offsets) 2527 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx]; 2528 else if (h != NULL) 2529 { 2530 tls_type = elf32_sparc_hash_entry(h)->tls_type; 2531 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) 2532 switch (ELF32_R_TYPE (rel->r_info)) 2533 { 2534 case R_SPARC_TLS_GD_HI22: 2535 case R_SPARC_TLS_IE_HI22: 2536 r_type = R_SPARC_TLS_LE_HIX22; 2537 break; 2538 default: 2539 r_type = R_SPARC_TLS_LE_LOX10; 2540 break; 2541 } 2542 } 2543 if (tls_type == GOT_TLS_IE) 2544 switch (r_type) 2545 { 2546 case R_SPARC_TLS_GD_HI22: 2547 r_type = R_SPARC_TLS_IE_HI22; 2548 break; 2549 case R_SPARC_TLS_GD_LO10: 2550 r_type = R_SPARC_TLS_IE_LO10; 2551 break; 2552 } 2553 2554 if (r_type == R_SPARC_TLS_LE_HIX22) 2555 { 2556 relocation = tpoff (info, relocation); 2557 break; 2558 } 2559 if (r_type == R_SPARC_TLS_LE_LOX10) 2560 { 2561 /* Change add into xor. */ 2562 relocation = tpoff (info, relocation); 2563 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd, 2564 contents + rel->r_offset) 2565 | 0x80182000), contents + rel->r_offset); 2566 break; 2567 } 2568 2569 if (h != NULL) 2570 { 2571 off = h->got.offset; 2572 h->got.offset |= 1; 2573 } 2574 else 2575 { 2576 BFD_ASSERT (local_got_offsets != NULL); 2577 off = local_got_offsets[r_symndx]; 2578 local_got_offsets[r_symndx] |= 1; 2579 } 2580 2581 r_sparc_tlsldm: 2582 if (htab->sgot == NULL) 2583 abort (); 2584 2585 if ((off & 1) != 0) 2586 off &= ~1; 2587 else 2588 { 2589 Elf_Internal_Rela outrel; 2590 Elf32_External_Rela *loc; 2591 int dr_type, indx; 2592 2593 if (htab->srelgot == NULL) 2594 abort (); 2595 2596 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off); 2597 outrel.r_offset = (htab->sgot->output_section->vma 2598 + htab->sgot->output_offset + off); 2599 indx = h && h->dynindx != -1 ? h->dynindx : 0; 2600 if (r_type == R_SPARC_TLS_IE_HI22 2601 || r_type == R_SPARC_TLS_IE_LO10) 2602 dr_type = R_SPARC_TLS_TPOFF32; 2603 else 2604 dr_type = R_SPARC_TLS_DTPMOD32; 2605 if (dr_type == R_SPARC_TLS_TPOFF32 && indx == 0) 2606 outrel.r_addend = relocation - dtpoff_base (info); 2607 else 2608 outrel.r_addend = 0; 2609 outrel.r_info = ELF32_R_INFO (indx, dr_type); 2610 loc = (Elf32_External_Rela *) htab->srelgot->contents; 2611 loc += htab->srelgot->reloc_count++; 2612 bfd_elf32_swap_reloca_out (output_bfd, &outrel, 2613 (bfd_byte *) loc); 2614 2615 if (r_type == R_SPARC_TLS_GD_HI22 2616 || r_type == R_SPARC_TLS_GD_LO10) 2617 { 2618 if (indx == 0) 2619 { 2620 BFD_ASSERT (! unresolved_reloc); 2621 bfd_put_32 (output_bfd, 2622 relocation - dtpoff_base (info), 2623 htab->sgot->contents + off + 4); 2624 } 2625 else 2626 { 2627 bfd_put_32 (output_bfd, 0, 2628 htab->sgot->contents + off + 4); 2629 outrel.r_info = ELF32_R_INFO (indx, 2630 R_SPARC_TLS_DTPOFF32); 2631 outrel.r_offset += 4; 2632 htab->srelgot->reloc_count++; 2633 loc++; 2634 bfd_elf32_swap_reloca_out (output_bfd, &outrel, 2635 (bfd_byte *) loc); 2636 } 2637 } 2638 else if (dr_type == R_SPARC_TLS_DTPMOD32) 2639 { 2640 bfd_put_32 (output_bfd, 0, 2641 htab->sgot->contents + off + 4); 2642 } 2643 } 2644 2645 if (off >= (bfd_vma) -2) 2646 abort (); 2647 2648 relocation = htab->sgot->output_offset + off - got_base; 2649 unresolved_reloc = FALSE; 2650 howto = _bfd_sparc_elf_howto_table + r_type; 2651 break; 2652 2653 case R_SPARC_TLS_LDM_HI22: 2654 case R_SPARC_TLS_LDM_LO10: 2655 if (! info->shared) 2656 { 2657 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 2658 continue; 2659 } 2660 off = htab->tls_ldm_got.offset; 2661 htab->tls_ldm_got.offset |= 1; 2662 goto r_sparc_tlsldm; 2663 2664 case R_SPARC_TLS_LDO_HIX22: 2665 case R_SPARC_TLS_LDO_LOX10: 2666 if (info->shared) 2667 relocation -= dtpoff_base (info); 2668 else 2669 relocation = tpoff (info, relocation); 2670 break; 2671 2672 case R_SPARC_TLS_LE_HIX22: 2673 case R_SPARC_TLS_LE_LOX10: 2674 if (info->shared) 2675 { 2676 Elf_Internal_Rela outrel; 2677 bfd_boolean skip, relocate = FALSE; 2678 2679 BFD_ASSERT (sreloc != NULL); 2680 skip = FALSE; 2681 outrel.r_offset = 2682 _bfd_elf_section_offset (output_bfd, info, input_section, 2683 rel->r_offset); 2684 if (outrel.r_offset == (bfd_vma) -1) 2685 skip = TRUE; 2686 else if (outrel.r_offset == (bfd_vma) -2) 2687 skip = TRUE, relocate = TRUE; 2688 outrel.r_offset += (input_section->output_section->vma 2689 + input_section->output_offset); 2690 if (skip) 2691 memset (&outrel, 0, sizeof outrel); 2692 else 2693 { 2694 outrel.r_info = ELF32_R_INFO (0, r_type); 2695 outrel.r_addend = relocation - dtpoff_base (info) 2696 + rel->r_addend; 2697 } 2698 2699 bfd_elf32_swap_reloca_out (output_bfd, &outrel, 2700 (bfd_byte *) (((Elf32_External_Rela *) 2701 sreloc->contents) 2702 + sreloc->reloc_count)); 2703 ++sreloc->reloc_count; 2704 continue; 2705 } 2706 relocation = tpoff (info, relocation); 2707 break; 2708 2709 case R_SPARC_TLS_LDM_CALL: 2710 if (! info->shared) 2711 { 2712 /* mov %g0, %o0 */ 2713 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset); 2714 continue; 2715 } 2716 /* Fall through */ 2717 2718 case R_SPARC_TLS_GD_CALL: 2719 tls_type = GOT_UNKNOWN; 2720 if (h == NULL && local_got_offsets) 2721 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx]; 2722 else if (h != NULL) 2723 tls_type = elf32_sparc_hash_entry(h)->tls_type; 2724 if (! info->shared 2725 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE)) 2726 { 2727 bfd_vma insn; 2728 2729 if (!info->shared && (h == NULL || h->dynindx == -1)) 2730 { 2731 /* GD -> LE */ 2732 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 2733 continue; 2734 } 2735 2736 /* GD -> IE */ 2737 if (rel + 1 < relend 2738 && ELF32_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD 2739 && rel[1].r_offset == rel->r_offset + 4 2740 && ELF32_R_SYM (rel[1].r_info) == r_symndx 2741 && (((insn = bfd_get_32 (input_bfd, 2742 contents + rel[1].r_offset)) 2743 >> 25) & 0x1f) == 8) 2744 { 2745 /* We have 2746 call __tls_get_addr, %tgd_call(foo) 2747 add %reg1, %reg2, %o0, %tgd_add(foo) 2748 and change it into IE: 2749 ld [%reg1 + %reg2], %o0, %tie_ld(foo) 2750 add %g7, %o0, %o0, %tie_add(foo). 2751 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2, 2752 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2. */ 2753 bfd_put_32 (output_bfd, insn | 0xc0000000, 2754 contents + rel->r_offset); 2755 bfd_put_32 (output_bfd, 0x9001c008, 2756 contents + rel->r_offset + 4); 2757 rel++; 2758 continue; 2759 } 2760 2761 bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset); 2762 continue; 2763 } 2764 2765 h = (struct elf_link_hash_entry *) 2766 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 2767 FALSE, TRUE); 2768 BFD_ASSERT (h != NULL); 2769 r_type = R_SPARC_WPLT30; 2770 howto = _bfd_sparc_elf_howto_table + r_type; 2771 goto r_sparc_wplt30; 2772 2773 case R_SPARC_TLS_GD_ADD: 2774 tls_type = GOT_UNKNOWN; 2775 if (h == NULL && local_got_offsets) 2776 tls_type = elf32_sparc_local_got_tls_type (input_bfd) [r_symndx]; 2777 else if (h != NULL) 2778 tls_type = elf32_sparc_hash_entry(h)->tls_type; 2779 if (! info->shared || tls_type == GOT_TLS_IE) 2780 { 2781 /* add %reg1, %reg2, %reg3, %tgd_add(foo) 2782 changed into IE: 2783 ld [%reg1 + %reg2], %reg3, %tie_ld(foo) 2784 or LE: 2785 add %g7, %reg2, %reg3. */ 2786 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2787 if ((h != NULL && h->dynindx != -1) || info->shared) 2788 relocation = insn | 0xc0000000; 2789 else 2790 relocation = (insn & ~0x7c000) | 0x1c000; 2791 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 2792 } 2793 continue; 2794 2795 case R_SPARC_TLS_LDM_ADD: 2796 if (! info->shared) 2797 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 2798 continue; 2799 2800 case R_SPARC_TLS_LDO_ADD: 2801 if (! info->shared) 2802 { 2803 /* Change rs1 into %g7. */ 2804 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2805 insn = (insn & ~0x7c000) | 0x1c000; 2806 bfd_put_32 (output_bfd, insn, contents + rel->r_offset); 2807 } 2808 continue; 2809 2810 case R_SPARC_TLS_IE_LD: 2811 case R_SPARC_TLS_IE_LDX: 2812 if (! info->shared && (h == NULL || h->dynindx == -1)) 2813 { 2814 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2815 int rs2 = insn & 0x1f; 2816 int rd = (insn >> 25) & 0x1f; 2817 2818 if (rs2 == rd) 2819 relocation = SPARC_NOP; 2820 else 2821 relocation = 0x80100000 | (insn & 0x3e00001f); 2822 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 2823 } 2824 continue; 2825 2826 case R_SPARC_TLS_IE_ADD: 2827 /* Totally useless relocation. */ 2828 continue; 2829 2830 case R_SPARC_TLS_DTPOFF32: 2831 relocation -= dtpoff_base (info); 2832 break; 2833 2834 default: 2835 break; 2836 } 2837 2838 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 2839 because such sections are not SEC_ALLOC and thus ld.so will 2840 not process them. */ 2841 if (unresolved_reloc 2842 && !((input_section->flags & SEC_DEBUGGING) != 0 2843 && h->def_dynamic)) 2844 (*_bfd_error_handler) 2845 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), 2846 input_bfd, 2847 input_section, 2848 (long) rel->r_offset, 2849 h->root.root.string); 2850 2851 r = bfd_reloc_continue; 2852 if (r_type == R_SPARC_WDISP16) 2853 { 2854 bfd_vma x; 2855 2856 relocation += rel->r_addend; 2857 relocation -= (input_section->output_section->vma 2858 + input_section->output_offset); 2859 relocation -= rel->r_offset; 2860 2861 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2862 x |= ((((relocation >> 2) & 0xc000) << 6) 2863 | ((relocation >> 2) & 0x3fff)); 2864 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2865 2866 if ((bfd_signed_vma) relocation < - 0x40000 2867 || (bfd_signed_vma) relocation > 0x3ffff) 2868 r = bfd_reloc_overflow; 2869 else 2870 r = bfd_reloc_ok; 2871 } 2872 else if (r_type == R_SPARC_REV32) 2873 { 2874 bfd_vma x; 2875 2876 relocation = relocation + rel->r_addend; 2877 2878 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2879 x = x + relocation; 2880 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); 2881 r = bfd_reloc_ok; 2882 } 2883 else if (r_type == R_SPARC_TLS_LDO_HIX22 2884 || r_type == R_SPARC_TLS_LE_HIX22) 2885 { 2886 bfd_vma x; 2887 2888 relocation += rel->r_addend; 2889 relocation = relocation ^ 0xffffffff; 2890 2891 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2892 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 2893 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2894 r = bfd_reloc_ok; 2895 } 2896 else if (r_type == R_SPARC_TLS_LDO_LOX10 2897 || r_type == R_SPARC_TLS_LE_LOX10) 2898 { 2899 bfd_vma x; 2900 2901 relocation += rel->r_addend; 2902 relocation = (relocation & 0x3ff) | 0x1c00; 2903 2904 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2905 x = (x & ~(bfd_vma) 0x1fff) | relocation; 2906 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2907 2908 r = bfd_reloc_ok; 2909 } 2910 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) 2911 && sec_do_relax (input_section) 2912 && rel->r_offset + 4 < input_section->size) 2913 { 2914#define G0 0 2915#define O7 15 2916#define XCC (2 << 20) 2917#define COND(x) (((x)&0xf)<<25) 2918#define CONDA COND(0x8) 2919#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) 2920#define INSN_BA (F2(0,2) | CONDA) 2921#define INSN_OR F3(2, 0x2, 0) 2922#define INSN_NOP F2(0,4) 2923 2924 bfd_vma x, y; 2925 2926 /* If the instruction is a call with either: 2927 restore 2928 arithmetic instruction with rd == %o7 2929 where rs1 != %o7 and rs2 if it is register != %o7 2930 then we can optimize if the call destination is near 2931 by changing the call into a branch always. */ 2932 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2933 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 2934 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) 2935 { 2936 if (((y & OP3(~0)) == OP3(0x3d) /* restore */ 2937 || ((y & OP3(0x28)) == 0 /* arithmetic */ 2938 && (y & RD(~0)) == RD(O7))) 2939 && (y & RS1(~0)) != RS1(O7) 2940 && ((y & F3I(~0)) 2941 || (y & RS2(~0)) != RS2(O7))) 2942 { 2943 bfd_vma reloc; 2944 2945 reloc = relocation + rel->r_addend - rel->r_offset; 2946 reloc -= (input_section->output_section->vma 2947 + input_section->output_offset); 2948 2949 /* Ensure the reloc fits into simm22. */ 2950 if ((reloc & 3) == 0 2951 && ((reloc & ~(bfd_vma)0x7fffff) == 0 2952 || ((reloc | 0x7fffff) == ~(bfd_vma)0))) 2953 { 2954 reloc >>= 2; 2955 2956 /* Check whether it fits into simm19 on v9. */ 2957 if (((reloc & 0x3c0000) == 0 2958 || (reloc & 0x3c0000) == 0x3c0000) 2959 && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) 2960 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ 2961 else 2962 x = INSN_BA | (reloc & 0x3fffff); /* ba */ 2963 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2964 r = bfd_reloc_ok; 2965 if (rel->r_offset >= 4 2966 && (y & (0xffffffff ^ RS1(~0))) 2967 == (INSN_OR | RD(O7) | RS2(G0))) 2968 { 2969 bfd_vma z; 2970 unsigned int reg; 2971 2972 z = bfd_get_32 (input_bfd, 2973 contents + rel->r_offset - 4); 2974 if ((z & (0xffffffff ^ RD(~0))) 2975 != (INSN_OR | RS1(O7) | RS2(G0))) 2976 break; 2977 2978 /* The sequence was 2979 or %o7, %g0, %rN 2980 call foo 2981 or %rN, %g0, %o7 2982 2983 If call foo was replaced with ba, replace 2984 or %rN, %g0, %o7 with nop. */ 2985 2986 reg = (y & RS1(~0)) >> 14; 2987 if (reg != ((z & RD(~0)) >> 25) 2988 || reg == G0 || reg == O7) 2989 break; 2990 2991 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, 2992 contents + rel->r_offset + 4); 2993 } 2994 2995 } 2996 } 2997 } 2998 } 2999 3000 if (r == bfd_reloc_continue) 3001 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3002 contents, rel->r_offset, 3003 relocation, rel->r_addend); 3004 3005 if (r != bfd_reloc_ok) 3006 { 3007 switch (r) 3008 { 3009 default: 3010 case bfd_reloc_outofrange: 3011 abort (); 3012 case bfd_reloc_overflow: 3013 { 3014 const char *name; 3015 3016 if (h != NULL) 3017 name = h->root.root.string; 3018 else 3019 { 3020 name = bfd_elf_string_from_elf_section (input_bfd, 3021 symtab_hdr->sh_link, 3022 sym->st_name); 3023 if (name == NULL) 3024 return FALSE; 3025 if (*name == '\0') 3026 name = bfd_section_name (input_bfd, sec); 3027 } 3028 if (! ((*info->callbacks->reloc_overflow) 3029 (info, name, howto->name, (bfd_vma) 0, 3030 input_bfd, input_section, rel->r_offset))) 3031 return FALSE; 3032 } 3033 break; 3034 } 3035 } 3036 } 3037 3038 return TRUE; 3039} 3040 3041/* Finish up dynamic symbol handling. We set the contents of various 3042 dynamic sections here. */ 3043 3044static bfd_boolean 3045elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym) 3046 bfd *output_bfd; 3047 struct bfd_link_info *info; 3048 struct elf_link_hash_entry *h; 3049 Elf_Internal_Sym *sym; 3050{ 3051 bfd *dynobj; 3052 struct elf32_sparc_link_hash_table *htab; 3053 3054 htab = elf32_sparc_hash_table (info); 3055 dynobj = htab->elf.dynobj; 3056 3057 if (h->plt.offset != (bfd_vma) -1) 3058 { 3059 asection *splt; 3060 asection *srela; 3061 Elf_Internal_Rela rela; 3062 bfd_byte *loc; 3063 3064 /* This symbol has an entry in the procedure linkage table. Set 3065 it up. */ 3066 3067 BFD_ASSERT (h->dynindx != -1); 3068 3069 splt = htab->splt; 3070 srela = htab->srelplt; 3071 BFD_ASSERT (splt != NULL && srela != NULL); 3072 3073 /* Fill in the entry in the procedure linkage table. */ 3074 bfd_put_32 (output_bfd, 3075 PLT_ENTRY_WORD0 + h->plt.offset, 3076 splt->contents + h->plt.offset); 3077 bfd_put_32 (output_bfd, 3078 (PLT_ENTRY_WORD1 3079 + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)), 3080 splt->contents + h->plt.offset + 4); 3081 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, 3082 splt->contents + h->plt.offset + 8); 3083 3084 /* Fill in the entry in the .rela.plt section. */ 3085 rela.r_offset = (splt->output_section->vma 3086 + splt->output_offset 3087 + h->plt.offset); 3088 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); 3089 rela.r_addend = 0; 3090 loc = srela->contents; 3091 loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela); 3092 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3093 3094 if (!h->def_regular) 3095 { 3096 /* Mark the symbol as undefined, rather than as defined in 3097 the .plt section. Leave the value alone. */ 3098 sym->st_shndx = SHN_UNDEF; 3099 /* If the symbol is weak, we do need to clear the value. 3100 Otherwise, the PLT entry would provide a definition for 3101 the symbol even if the symbol wasn't defined anywhere, 3102 and so the symbol would never be NULL. */ 3103 if (!h->ref_regular_nonweak) 3104 sym->st_value = 0; 3105 } 3106 } 3107 3108 if (h->got.offset != (bfd_vma) -1 3109 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_GD 3110 && elf32_sparc_hash_entry(h)->tls_type != GOT_TLS_IE) 3111 { 3112 asection *sgot; 3113 asection *srela; 3114 Elf_Internal_Rela rela; 3115 bfd_byte *loc; 3116 3117 /* This symbol has an entry in the global offset table. Set it 3118 up. */ 3119 3120 sgot = htab->sgot; 3121 srela = htab->srelgot; 3122 BFD_ASSERT (sgot != NULL && srela != NULL); 3123 3124 rela.r_offset = (sgot->output_section->vma 3125 + sgot->output_offset 3126 + (h->got.offset &~ (bfd_vma) 1)); 3127 3128 /* If this is a -Bsymbolic link, and the symbol is defined 3129 locally, we just want to emit a RELATIVE reloc. Likewise if 3130 the symbol was forced to be local because of a version file. 3131 The entry in the global offset table will already have been 3132 initialized in the relocate_section function. */ 3133 if (info->shared 3134 && (info->symbolic || h->dynindx == -1) 3135 && h->def_regular) 3136 { 3137 asection *sec = h->root.u.def.section; 3138 rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE); 3139 rela.r_addend = (h->root.u.def.value 3140 + sec->output_section->vma 3141 + sec->output_offset); 3142 } 3143 else 3144 { 3145 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); 3146 rela.r_addend = 0; 3147 } 3148 3149 bfd_put_32 (output_bfd, (bfd_vma) 0, 3150 sgot->contents + (h->got.offset &~ (bfd_vma) 1)); 3151 loc = srela->contents; 3152 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); 3153 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3154 } 3155 3156 if (h->needs_copy) 3157 { 3158 asection *s; 3159 Elf_Internal_Rela rela; 3160 bfd_byte *loc; 3161 3162 /* This symbols needs a copy reloc. Set it up. */ 3163 3164 BFD_ASSERT (h->dynindx != -1); 3165 3166 s = bfd_get_section_by_name (h->root.u.def.section->owner, 3167 ".rela.bss"); 3168 BFD_ASSERT (s != NULL); 3169 3170 rela.r_offset = (h->root.u.def.value 3171 + h->root.u.def.section->output_section->vma 3172 + h->root.u.def.section->output_offset); 3173 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY); 3174 rela.r_addend = 0; 3175 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); 3176 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3177 } 3178 3179 /* Mark some specially defined symbols as absolute. */ 3180 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 3181 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 3182 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) 3183 sym->st_shndx = SHN_ABS; 3184 3185 return TRUE; 3186} 3187 3188/* Finish up the dynamic sections. */ 3189 3190static bfd_boolean 3191elf32_sparc_finish_dynamic_sections (output_bfd, info) 3192 bfd *output_bfd; 3193 struct bfd_link_info *info; 3194{ 3195 bfd *dynobj; 3196 asection *sdyn; 3197 struct elf32_sparc_link_hash_table *htab; 3198 3199 htab = elf32_sparc_hash_table (info); 3200 dynobj = htab->elf.dynobj; 3201 3202 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 3203 3204 if (elf_hash_table (info)->dynamic_sections_created) 3205 { 3206 asection *splt; 3207 Elf32_External_Dyn *dyncon, *dynconend; 3208 3209 splt = bfd_get_section_by_name (dynobj, ".plt"); 3210 BFD_ASSERT (splt != NULL && sdyn != NULL); 3211 3212 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3213 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3214 for (; dyncon < dynconend; dyncon++) 3215 { 3216 Elf_Internal_Dyn dyn; 3217 const char *name; 3218 bfd_boolean size; 3219 3220 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3221 3222 switch (dyn.d_tag) 3223 { 3224 case DT_PLTGOT: name = ".plt"; size = FALSE; break; 3225 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; 3226 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; 3227 default: name = NULL; size = FALSE; break; 3228 } 3229 3230 if (name != NULL) 3231 { 3232 asection *s; 3233 3234 s = bfd_get_section_by_name (output_bfd, name); 3235 if (s == NULL) 3236 dyn.d_un.d_val = 0; 3237 else 3238 { 3239 if (! size) 3240 dyn.d_un.d_ptr = s->vma; 3241 else 3242 dyn.d_un.d_val = s->size; 3243 } 3244 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3245 } 3246 } 3247 3248 /* Clear the first four entries in the procedure linkage table, 3249 and put a nop in the last four bytes. */ 3250 if (splt->size > 0) 3251 { 3252 memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE); 3253 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, 3254 splt->contents + splt->size - 4); 3255 } 3256 3257 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; 3258 } 3259 3260 /* Set the first entry in the global offset table to the address of 3261 the dynamic section. */ 3262 if (htab->sgot && htab->sgot->size > 0) 3263 { 3264 if (sdyn == NULL) 3265 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents); 3266 else 3267 bfd_put_32 (output_bfd, 3268 sdyn->output_section->vma + sdyn->output_offset, 3269 htab->sgot->contents); 3270 } 3271 3272 if (htab->sgot) 3273 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4; 3274 3275 return TRUE; 3276} 3277 3278/* Functions for dealing with the e_flags field. 3279 3280 We don't define set_private_flags or copy_private_bfd_data because 3281 the only currently defined values are based on the bfd mach number, 3282 so we use the latter instead and defer setting e_flags until the 3283 file is written out. */ 3284 3285/* Merge backend specific data from an object file to the output 3286 object file when linking. */ 3287 3288static bfd_boolean 3289elf32_sparc_merge_private_bfd_data (ibfd, obfd) 3290 bfd *ibfd; 3291 bfd *obfd; 3292{ 3293 bfd_boolean error; 3294 unsigned long ibfd_mach; 3295 /* FIXME: This should not be static. */ 3296 static unsigned long previous_ibfd_e_flags = (unsigned long) -1; 3297 3298 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3299 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3300 return TRUE; 3301 3302 error = FALSE; 3303 3304 ibfd_mach = bfd_get_mach (ibfd); 3305 if (bfd_mach_sparc_64bit_p (ibfd_mach)) 3306 { 3307 error = TRUE; 3308 (*_bfd_error_handler) 3309 (_("%B: compiled for a 64 bit system and target is 32 bit"), ibfd); 3310 } 3311 else if ((ibfd->flags & DYNAMIC) == 0) 3312 { 3313 if (bfd_get_mach (obfd) < ibfd_mach) 3314 bfd_set_arch_mach (obfd, bfd_arch_sparc, ibfd_mach); 3315 } 3316 3317 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) 3318 != previous_ibfd_e_flags) 3319 && previous_ibfd_e_flags != (unsigned long) -1) 3320 { 3321 (*_bfd_error_handler) 3322 (_("%B: linking little endian files with big endian files"), ibfd); 3323 error = TRUE; 3324 } 3325 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; 3326 3327 if (error) 3328 { 3329 bfd_set_error (bfd_error_bad_value); 3330 return FALSE; 3331 } 3332 3333 return TRUE; 3334} 3335 3336/* Set the right machine number. */ 3337 3338static bfd_boolean 3339elf32_sparc_object_p (abfd) 3340 bfd *abfd; 3341{ 3342 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) 3343 { 3344 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 3345 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 3346 bfd_mach_sparc_v8plusb); 3347 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 3348 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 3349 bfd_mach_sparc_v8plusa); 3350 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) 3351 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 3352 bfd_mach_sparc_v8plus); 3353 else 3354 return FALSE; 3355 } 3356 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) 3357 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 3358 bfd_mach_sparc_sparclite_le); 3359 else 3360 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 3361} 3362 3363/* The final processing done just before writing out the object file. 3364 We need to set the e_machine field appropriately. */ 3365 3366static void 3367elf32_sparc_final_write_processing (abfd, linker) 3368 bfd *abfd; 3369 bfd_boolean linker ATTRIBUTE_UNUSED; 3370{ 3371 switch (bfd_get_mach (abfd)) 3372 { 3373 case bfd_mach_sparc : 3374 case bfd_mach_sparc_sparclet : 3375 case bfd_mach_sparc_sparclite : 3376 break; /* nothing to do */ 3377 case bfd_mach_sparc_v8plus : 3378 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; 3379 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; 3380 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; 3381 break; 3382 case bfd_mach_sparc_v8plusa : 3383 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; 3384 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; 3385 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; 3386 break; 3387 case bfd_mach_sparc_v8plusb : 3388 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; 3389 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; 3390 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 3391 | EF_SPARC_SUN_US3; 3392 break; 3393 case bfd_mach_sparc_sparclite_le : 3394 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; 3395 break; 3396 default : 3397 abort (); 3398 break; 3399 } 3400} 3401 3402static enum elf_reloc_type_class 3403elf32_sparc_reloc_type_class (rela) 3404 const Elf_Internal_Rela *rela; 3405{ 3406 switch ((int) ELF32_R_TYPE (rela->r_info)) 3407 { 3408 case R_SPARC_RELATIVE: 3409 return reloc_class_relative; 3410 case R_SPARC_JMP_SLOT: 3411 return reloc_class_plt; 3412 case R_SPARC_COPY: 3413 return reloc_class_copy; 3414 default: 3415 return reloc_class_normal; 3416 } 3417} 3418 3419/* Return address for Ith PLT stub in section PLT, for relocation REL 3420 or (bfd_vma) -1 if it should not be included. */ 3421 3422static bfd_vma 3423elf32_sparc_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, 3424 const asection *plt ATTRIBUTE_UNUSED, 3425 const arelent *rel) 3426{ 3427 return rel->address; 3428} 3429 3430#define TARGET_BIG_SYM bfd_elf32_sparc_vec 3431#define TARGET_BIG_NAME "elf32-sparc" 3432#define ELF_ARCH bfd_arch_sparc 3433#define ELF_MACHINE_CODE EM_SPARC 3434#define ELF_MACHINE_ALT1 EM_SPARC32PLUS 3435#define ELF_MAXPAGESIZE 0x10000 3436 3437#define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup 3438#define bfd_elf32_bfd_link_hash_table_create \ 3439 elf32_sparc_link_hash_table_create 3440#define bfd_elf32_bfd_relax_section elf32_sparc_relax_section 3441#define bfd_elf32_new_section_hook elf32_sparc_new_section_hook 3442#define elf_info_to_howto elf32_sparc_info_to_howto 3443#define elf_backend_copy_indirect_symbol \ 3444 elf32_sparc_copy_indirect_symbol 3445#define elf_backend_create_dynamic_sections \ 3446 elf32_sparc_create_dynamic_sections 3447#define elf_backend_check_relocs elf32_sparc_check_relocs 3448#define elf_backend_adjust_dynamic_symbol \ 3449 elf32_sparc_adjust_dynamic_symbol 3450#define elf_backend_size_dynamic_sections \ 3451 elf32_sparc_size_dynamic_sections 3452#define elf_backend_relocate_section elf32_sparc_relocate_section 3453#define elf_backend_finish_dynamic_symbol \ 3454 elf32_sparc_finish_dynamic_symbol 3455#define elf_backend_finish_dynamic_sections \ 3456 elf32_sparc_finish_dynamic_sections 3457#define bfd_elf32_bfd_merge_private_bfd_data \ 3458 elf32_sparc_merge_private_bfd_data 3459#define bfd_elf32_mkobject elf32_sparc_mkobject 3460#define elf_backend_object_p elf32_sparc_object_p 3461#define elf_backend_final_write_processing \ 3462 elf32_sparc_final_write_processing 3463#define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook 3464#define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook 3465#define elf_backend_grok_psinfo elf32_sparc_grok_psinfo 3466#define elf_backend_reloc_type_class elf32_sparc_reloc_type_class 3467#define elf_backend_plt_sym_val elf32_sparc_plt_sym_val 3468 3469#define elf_backend_can_gc_sections 1 3470#define elf_backend_can_refcount 1 3471#define elf_backend_want_got_plt 0 3472#define elf_backend_plt_readonly 0 3473#define elf_backend_want_plt_sym 1 3474#define elf_backend_got_header_size 4 3475#define elf_backend_rela_normal 1 3476 3477#include "elf32-target.h" 3478