1/* SPARC-specific support for ELF 2 Copyright (C) 2005-2017 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 22/* This file handles functionality common to the different SPARC ABI's. */ 23 24#include "sysdep.h" 25#include "bfd.h" 26#include "bfdlink.h" 27#include "libbfd.h" 28#include "libiberty.h" 29#include "elf-bfd.h" 30#include "elf/sparc.h" 31#include "opcode/sparc.h" 32#include "elfxx-sparc.h" 33#include "elf-vxworks.h" 34#include "objalloc.h" 35#include "hashtab.h" 36 37/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ 38#define MINUS_ONE (~ (bfd_vma) 0) 39 40#define ABI_64_P(abfd) \ 41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) 42 43/* The relocation "howto" table. */ 44 45/* Utility for performing the standard initial work of an instruction 46 relocation. 47 *PRELOCATION will contain the relocated item. 48 *PINSN will contain the instruction from the input stream. 49 If the result is `bfd_reloc_other' the caller can continue with 50 performing the relocation. Otherwise it must stop and return the 51 value to its caller. */ 52 53static bfd_reloc_status_type 54init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 55 void * data, asection *input_section, bfd *output_bfd, 56 bfd_vma *prelocation, bfd_vma *pinsn) 57{ 58 bfd_vma relocation; 59 reloc_howto_type *howto = reloc_entry->howto; 60 61 if (output_bfd != (bfd *) NULL 62 && (symbol->flags & BSF_SECTION_SYM) == 0 63 && (! howto->partial_inplace 64 || reloc_entry->addend == 0)) 65 { 66 reloc_entry->address += input_section->output_offset; 67 return bfd_reloc_ok; 68 } 69 70 /* This works because partial_inplace is FALSE. */ 71 if (output_bfd != NULL) 72 return bfd_reloc_continue; 73 74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 75 return bfd_reloc_outofrange; 76 77 relocation = (symbol->value 78 + symbol->section->output_section->vma 79 + symbol->section->output_offset); 80 relocation += reloc_entry->addend; 81 if (howto->pc_relative) 82 { 83 relocation -= (input_section->output_section->vma 84 + input_section->output_offset); 85 relocation -= reloc_entry->address; 86 } 87 88 *prelocation = relocation; 89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 90 return bfd_reloc_other; 91} 92 93/* For unsupported relocs. */ 94 95static bfd_reloc_status_type 96sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED, 97 arelent *reloc_entry ATTRIBUTE_UNUSED, 98 asymbol *symbol ATTRIBUTE_UNUSED, 99 void * data ATTRIBUTE_UNUSED, 100 asection *input_section ATTRIBUTE_UNUSED, 101 bfd *output_bfd ATTRIBUTE_UNUSED, 102 char **error_message ATTRIBUTE_UNUSED) 103{ 104 return bfd_reloc_notsupported; 105} 106 107/* Handle the WDISP16 reloc. */ 108 109static bfd_reloc_status_type 110sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 111 void * data, asection *input_section, bfd *output_bfd, 112 char **error_message ATTRIBUTE_UNUSED) 113{ 114 bfd_vma relocation; 115 bfd_vma insn; 116 bfd_reloc_status_type status; 117 118 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 119 input_section, output_bfd, &relocation, &insn); 120 if (status != bfd_reloc_other) 121 return status; 122 123 insn &= ~ (bfd_vma) 0x303fff; 124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff); 125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 126 127 if ((bfd_signed_vma) relocation < - 0x40000 128 || (bfd_signed_vma) relocation > 0x3ffff) 129 return bfd_reloc_overflow; 130 else 131 return bfd_reloc_ok; 132} 133 134/* Handle the WDISP10 reloc. */ 135 136static bfd_reloc_status_type 137sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 138 void * data, asection *input_section, bfd *output_bfd, 139 char **error_message ATTRIBUTE_UNUSED) 140{ 141 bfd_vma relocation; 142 bfd_vma insn; 143 bfd_reloc_status_type status; 144 145 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 146 input_section, output_bfd, &relocation, &insn); 147 if (status != bfd_reloc_other) 148 return status; 149 150 insn &= ~ (bfd_vma) 0x181fe0; 151 insn |= (((relocation >> 2) & 0x300) << 11) 152 | (((relocation >> 2) & 0xff) << 5); 153 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 154 155 if ((bfd_signed_vma) relocation < - 0x1000 156 || (bfd_signed_vma) relocation > 0xfff) 157 return bfd_reloc_overflow; 158 else 159 return bfd_reloc_ok; 160} 161 162/* Handle the HIX22 reloc. */ 163 164static bfd_reloc_status_type 165sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 166 void * data, asection *input_section, bfd *output_bfd, 167 char **error_message ATTRIBUTE_UNUSED) 168{ 169 bfd_vma relocation; 170 bfd_vma insn; 171 bfd_reloc_status_type status; 172 173 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 174 input_section, output_bfd, &relocation, &insn); 175 if (status != bfd_reloc_other) 176 return status; 177 178 relocation ^= MINUS_ONE; 179 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 180 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 181 182 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) 183 return bfd_reloc_overflow; 184 else 185 return bfd_reloc_ok; 186} 187 188/* Handle the LOX10 reloc. */ 189 190static bfd_reloc_status_type 191sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 192 void * data, asection *input_section, bfd *output_bfd, 193 char **error_message ATTRIBUTE_UNUSED) 194{ 195 bfd_vma relocation; 196 bfd_vma insn; 197 bfd_reloc_status_type status; 198 199 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 200 input_section, output_bfd, &relocation, &insn); 201 if (status != bfd_reloc_other) 202 return status; 203 204 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); 205 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 206 207 return bfd_reloc_ok; 208} 209 210static reloc_howto_type _bfd_sparc_elf_howto_table[] = 211{ 212 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 213 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), 214 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), 215 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), 216 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), 217 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), 218 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), 219 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), 220 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), 221 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), 222 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), 223 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), 224 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), 225 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), 226 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), 227 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), 228 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), 229 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), 230 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), 231 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), 232 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), 233 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), 234 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), 235 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), 236 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), 237 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), 238 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), 239 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), 240 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), 241 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), 242 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), 243 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), 244 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE), 245 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE), 246 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE), 247 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE), 248 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE), 249 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE), 250 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE), 251 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE), 252 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), 253 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), 254 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), 255 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), 256 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), 257 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), 258 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE), 259 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE), 260 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE), 261 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE), 262 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE), 263 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE), 264 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE), 265 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE), 266 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE), 267 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), 268 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), 269 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), 270 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), 271 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), 272 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), 273 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), 274 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), 275 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), 276 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), 277 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), 278 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), 279 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), 280 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), 281 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), 282 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), 283 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), 284 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), 285 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), 286 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), 287 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), 288 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), 289 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE), 290 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), 291 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), 292 HOWTO(R_SPARC_GOTDATA_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",FALSE,0,0x003fffff, FALSE), 293 HOWTO(R_SPARC_GOTDATA_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",FALSE,0,0x000003ff, FALSE), 294 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",FALSE,0,0x003fffff, FALSE), 295 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",FALSE,0,0x000003ff, FALSE), 296 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",FALSE,0,0x00000000,TRUE), 297 HOWTO(R_SPARC_H34,12,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",FALSE,0,0x003fffff,FALSE), 298 HOWTO(R_SPARC_SIZE32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",FALSE,0,0xffffffff,TRUE), 299 HOWTO(R_SPARC_SIZE64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",FALSE,0,MINUS_ONE, TRUE), 300 HOWTO(R_SPARC_WDISP10,2,2,10,TRUE, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",FALSE,0,0x00000000,TRUE), 301}; 302static reloc_howto_type sparc_jmp_irel_howto = 303 HOWTO(R_SPARC_JMP_IREL, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",FALSE,0,0x00000000,TRUE); 304static reloc_howto_type sparc_irelative_howto = 305 HOWTO(R_SPARC_IRELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",FALSE,0,0x00000000,TRUE); 306static reloc_howto_type sparc_vtinherit_howto = 307 HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); 308static reloc_howto_type sparc_vtentry_howto = 309 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); 310static reloc_howto_type sparc_rev32_howto = 311 HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE); 312 313reloc_howto_type * 314_bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 315 bfd_reloc_code_real_type code) 316{ 317 /* We explicitly handle each relocation type in the switch 318 instead of using a lookup table for efficiency. */ 319 switch (code) 320 { 321 case BFD_RELOC_NONE: 322 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE]; 323 324 case BFD_RELOC_8: 325 return &_bfd_sparc_elf_howto_table[R_SPARC_8]; 326 327 case BFD_RELOC_16: 328 return &_bfd_sparc_elf_howto_table[R_SPARC_16]; 329 330 case BFD_RELOC_32: 331 return &_bfd_sparc_elf_howto_table[R_SPARC_32]; 332 333 case BFD_RELOC_8_PCREL: 334 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8]; 335 336 case BFD_RELOC_16_PCREL: 337 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16]; 338 339 case BFD_RELOC_32_PCREL: 340 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32]; 341 342 case BFD_RELOC_32_PCREL_S2: 343 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30]; 344 345 case BFD_RELOC_SPARC_WDISP22: 346 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22]; 347 348 case BFD_RELOC_HI22: 349 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22]; 350 351 case BFD_RELOC_SPARC22: 352 return &_bfd_sparc_elf_howto_table[R_SPARC_22]; 353 354 case BFD_RELOC_SPARC13: 355 return &_bfd_sparc_elf_howto_table[R_SPARC_13]; 356 357 case BFD_RELOC_LO10: 358 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10]; 359 360 case BFD_RELOC_SPARC_GOT10: 361 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10]; 362 363 case BFD_RELOC_SPARC_GOT13: 364 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13]; 365 366 case BFD_RELOC_SPARC_GOT22: 367 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22]; 368 369 case BFD_RELOC_SPARC_PC10: 370 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10]; 371 372 case BFD_RELOC_SPARC_PC22: 373 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22]; 374 375 case BFD_RELOC_SPARC_WPLT30: 376 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30]; 377 378 case BFD_RELOC_SPARC_COPY: 379 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY]; 380 381 case BFD_RELOC_SPARC_GLOB_DAT: 382 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT]; 383 384 case BFD_RELOC_SPARC_JMP_SLOT: 385 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT]; 386 387 case BFD_RELOC_SPARC_RELATIVE: 388 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE]; 389 390 case BFD_RELOC_SPARC_UA32: 391 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32]; 392 393 case BFD_RELOC_SPARC_PLT32: 394 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32]; 395 396 case BFD_RELOC_SPARC_10: 397 return &_bfd_sparc_elf_howto_table[R_SPARC_10]; 398 399 case BFD_RELOC_SPARC_11: 400 return &_bfd_sparc_elf_howto_table[R_SPARC_11]; 401 402 case BFD_RELOC_SPARC_64: 403 return &_bfd_sparc_elf_howto_table[R_SPARC_64]; 404 405 case BFD_RELOC_SPARC_OLO10: 406 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10]; 407 408 case BFD_RELOC_SPARC_HH22: 409 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22]; 410 411 case BFD_RELOC_SPARC_HM10: 412 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10]; 413 414 case BFD_RELOC_SPARC_LM22: 415 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22]; 416 417 case BFD_RELOC_SPARC_PC_HH22: 418 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22]; 419 420 case BFD_RELOC_SPARC_PC_HM10: 421 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10]; 422 423 case BFD_RELOC_SPARC_PC_LM22: 424 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22]; 425 426 case BFD_RELOC_SPARC_WDISP16: 427 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16]; 428 429 case BFD_RELOC_SPARC_WDISP19: 430 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19]; 431 432 case BFD_RELOC_SPARC_7: 433 return &_bfd_sparc_elf_howto_table[R_SPARC_7]; 434 435 case BFD_RELOC_SPARC_5: 436 return &_bfd_sparc_elf_howto_table[R_SPARC_5]; 437 438 case BFD_RELOC_SPARC_6: 439 return &_bfd_sparc_elf_howto_table[R_SPARC_6]; 440 441 case BFD_RELOC_SPARC_DISP64: 442 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64]; 443 444 case BFD_RELOC_SPARC_PLT64: 445 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64]; 446 447 case BFD_RELOC_SPARC_HIX22: 448 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22]; 449 450 case BFD_RELOC_SPARC_LOX10: 451 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10]; 452 453 case BFD_RELOC_SPARC_H44: 454 return &_bfd_sparc_elf_howto_table[R_SPARC_H44]; 455 456 case BFD_RELOC_SPARC_M44: 457 return &_bfd_sparc_elf_howto_table[R_SPARC_M44]; 458 459 case BFD_RELOC_SPARC_L44: 460 return &_bfd_sparc_elf_howto_table[R_SPARC_L44]; 461 462 case BFD_RELOC_SPARC_REGISTER: 463 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER]; 464 465 case BFD_RELOC_SPARC_UA64: 466 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64]; 467 468 case BFD_RELOC_SPARC_UA16: 469 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16]; 470 471 case BFD_RELOC_SPARC_TLS_GD_HI22: 472 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22]; 473 474 case BFD_RELOC_SPARC_TLS_GD_LO10: 475 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10]; 476 477 case BFD_RELOC_SPARC_TLS_GD_ADD: 478 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD]; 479 480 case BFD_RELOC_SPARC_TLS_GD_CALL: 481 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL]; 482 483 case BFD_RELOC_SPARC_TLS_LDM_HI22: 484 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22]; 485 486 case BFD_RELOC_SPARC_TLS_LDM_LO10: 487 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10]; 488 489 case BFD_RELOC_SPARC_TLS_LDM_ADD: 490 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD]; 491 492 case BFD_RELOC_SPARC_TLS_LDM_CALL: 493 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL]; 494 495 case BFD_RELOC_SPARC_TLS_LDO_HIX22: 496 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22]; 497 498 case BFD_RELOC_SPARC_TLS_LDO_LOX10: 499 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10]; 500 501 case BFD_RELOC_SPARC_TLS_LDO_ADD: 502 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD]; 503 504 case BFD_RELOC_SPARC_TLS_IE_HI22: 505 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22]; 506 507 case BFD_RELOC_SPARC_TLS_IE_LO10: 508 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10]; 509 510 case BFD_RELOC_SPARC_TLS_IE_LD: 511 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD]; 512 513 case BFD_RELOC_SPARC_TLS_IE_LDX: 514 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX]; 515 516 case BFD_RELOC_SPARC_TLS_IE_ADD: 517 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD]; 518 519 case BFD_RELOC_SPARC_TLS_LE_HIX22: 520 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22]; 521 522 case BFD_RELOC_SPARC_TLS_LE_LOX10: 523 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10]; 524 525 case BFD_RELOC_SPARC_TLS_DTPMOD32: 526 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32]; 527 528 case BFD_RELOC_SPARC_TLS_DTPMOD64: 529 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64]; 530 531 case BFD_RELOC_SPARC_TLS_DTPOFF32: 532 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32]; 533 534 case BFD_RELOC_SPARC_TLS_DTPOFF64: 535 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64]; 536 537 case BFD_RELOC_SPARC_TLS_TPOFF32: 538 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32]; 539 540 case BFD_RELOC_SPARC_TLS_TPOFF64: 541 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64]; 542 543 case BFD_RELOC_SPARC_GOTDATA_HIX22: 544 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22]; 545 546 case BFD_RELOC_SPARC_GOTDATA_LOX10: 547 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10]; 548 549 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22: 550 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22]; 551 552 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10: 553 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10]; 554 555 case BFD_RELOC_SPARC_GOTDATA_OP: 556 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP]; 557 558 case BFD_RELOC_SPARC_H34: 559 return &_bfd_sparc_elf_howto_table[R_SPARC_H34]; 560 561 case BFD_RELOC_SPARC_SIZE32: 562 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32]; 563 564 case BFD_RELOC_SPARC_SIZE64: 565 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64]; 566 567 case BFD_RELOC_SPARC_WDISP10: 568 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10]; 569 570 case BFD_RELOC_SPARC_JMP_IREL: 571 return &sparc_jmp_irel_howto; 572 573 case BFD_RELOC_SPARC_IRELATIVE: 574 return &sparc_irelative_howto; 575 576 case BFD_RELOC_VTABLE_INHERIT: 577 return &sparc_vtinherit_howto; 578 579 case BFD_RELOC_VTABLE_ENTRY: 580 return &sparc_vtentry_howto; 581 582 case BFD_RELOC_SPARC_REV32: 583 return &sparc_rev32_howto; 584 585 default: 586 break; 587 } 588 bfd_set_error (bfd_error_bad_value); 589 return NULL; 590} 591 592reloc_howto_type * 593_bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 594 const char *r_name) 595{ 596 unsigned int i; 597 598 for (i = 0; 599 i < (sizeof (_bfd_sparc_elf_howto_table) 600 / sizeof (_bfd_sparc_elf_howto_table[0])); 601 i++) 602 if (_bfd_sparc_elf_howto_table[i].name != NULL 603 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0) 604 return &_bfd_sparc_elf_howto_table[i]; 605 606 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0) 607 return &sparc_vtinherit_howto; 608 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0) 609 return &sparc_vtentry_howto; 610 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0) 611 return &sparc_rev32_howto; 612 613 return NULL; 614} 615 616reloc_howto_type * 617_bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type) 618{ 619 switch (r_type) 620 { 621 case R_SPARC_JMP_IREL: 622 return &sparc_jmp_irel_howto; 623 624 case R_SPARC_IRELATIVE: 625 return &sparc_irelative_howto; 626 627 case R_SPARC_GNU_VTINHERIT: 628 return &sparc_vtinherit_howto; 629 630 case R_SPARC_GNU_VTENTRY: 631 return &sparc_vtentry_howto; 632 633 case R_SPARC_REV32: 634 return &sparc_rev32_howto; 635 636 default: 637 if (r_type >= (unsigned int) R_SPARC_max_std) 638 { 639 _bfd_error_handler (_("invalid relocation type %d"), (int) r_type); 640 r_type = R_SPARC_NONE; 641 } 642 return &_bfd_sparc_elf_howto_table[r_type]; 643 } 644} 645 646/* Both 32-bit and 64-bit sparc encode this in an identical manner, 647 so just take advantage of that. */ 648#define SPARC_ELF_R_TYPE(r_info) \ 649 ((r_info) & 0xff) 650 651void 652_bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, 653 Elf_Internal_Rela *dst) 654{ 655 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info); 656 657 cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type); 658} 659 660 661/* The nop opcode we use. */ 662#define SPARC_NOP 0x01000000 663 664#define SPARC_INSN_BYTES 4 665 666/* The SPARC linker needs to keep track of the number of relocs that it 667 decides to copy as dynamic relocs in check_relocs for each symbol. 668 This is so that it can later discard them if they are found to be 669 unnecessary. We store the information in a field extending the 670 regular ELF linker hash table. */ 671 672struct _bfd_sparc_elf_dyn_relocs 673{ 674 struct _bfd_sparc_elf_dyn_relocs *next; 675 676 /* The input section of the reloc. */ 677 asection *sec; 678 679 /* Total number of relocs copied for the input section. */ 680 bfd_size_type count; 681 682 /* Number of pc-relative relocs copied for the input section. */ 683 bfd_size_type pc_count; 684}; 685 686/* SPARC ELF linker hash entry. */ 687 688struct _bfd_sparc_elf_link_hash_entry 689{ 690 struct elf_link_hash_entry elf; 691 692 /* Track dynamic relocs copied for this symbol. */ 693 struct _bfd_sparc_elf_dyn_relocs *dyn_relocs; 694 695#define GOT_UNKNOWN 0 696#define GOT_NORMAL 1 697#define GOT_TLS_GD 2 698#define GOT_TLS_IE 3 699 unsigned char tls_type; 700}; 701 702#define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent)) 703 704struct _bfd_sparc_elf_obj_tdata 705{ 706 struct elf_obj_tdata root; 707 708 /* tls_type for each local got entry. */ 709 char *local_got_tls_type; 710 711 /* TRUE if TLS GD relocs has been seen for this object. */ 712 bfd_boolean has_tlsgd; 713}; 714 715#define _bfd_sparc_elf_tdata(abfd) \ 716 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any) 717 718#define _bfd_sparc_elf_local_got_tls_type(abfd) \ 719 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type) 720 721#define is_sparc_elf(bfd) \ 722 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 723 && elf_tdata (bfd) != NULL \ 724 && elf_object_id (bfd) == SPARC_ELF_DATA) 725 726bfd_boolean 727_bfd_sparc_elf_mkobject (bfd *abfd) 728{ 729 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata), 730 SPARC_ELF_DATA); 731} 732 733static void 734sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) 735{ 736 bfd_put_32 (abfd, val, ptr); 737} 738 739static void 740sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) 741{ 742 bfd_put_64 (abfd, val, ptr); 743} 744 745static void 746sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 747{ 748 const struct elf_backend_data *bed; 749 bfd_byte *loc; 750 751 bed = get_elf_backend_data (abfd); 752 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); 753 bed->s->swap_reloca_out (abfd, rel, loc); 754} 755 756static bfd_vma 757sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 758 bfd_vma rel_index ATTRIBUTE_UNUSED, 759 bfd_vma type ATTRIBUTE_UNUSED) 760{ 761 return ELF64_R_INFO (rel_index, 762 (in_rel ? 763 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info), 764 type) : type)); 765} 766 767static bfd_vma 768sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 769 bfd_vma rel_index, bfd_vma type) 770{ 771 return ELF32_R_INFO (rel_index, type); 772} 773 774static bfd_vma 775sparc_elf_r_symndx_64 (bfd_vma r_info) 776{ 777 bfd_vma r_symndx = ELF32_R_SYM (r_info); 778 return (r_symndx >> 24); 779} 780 781static bfd_vma 782sparc_elf_r_symndx_32 (bfd_vma r_info) 783{ 784 return ELF32_R_SYM (r_info); 785} 786 787/* PLT/GOT stuff */ 788 789#define PLT32_ENTRY_SIZE 12 790#define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE) 791 792/* The first four entries in a 32-bit procedure linkage table are reserved, 793 and the initial contents are unimportant (we zero them out). 794 Subsequent entries look like this. See the SVR4 ABI SPARC 795 supplement to see how this works. */ 796 797/* sethi %hi(.-.plt0),%g1. We fill in the address later. */ 798#define PLT32_ENTRY_WORD0 0x03000000 799/* b,a .plt0. We fill in the offset later. */ 800#define PLT32_ENTRY_WORD1 0x30800000 801/* nop. */ 802#define PLT32_ENTRY_WORD2 SPARC_NOP 803 804static int 805sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset, 806 bfd_vma max ATTRIBUTE_UNUSED, 807 bfd_vma *r_offset) 808{ 809 bfd_put_32 (output_bfd, 810 PLT32_ENTRY_WORD0 + offset, 811 splt->contents + offset); 812 bfd_put_32 (output_bfd, 813 (PLT32_ENTRY_WORD1 814 + (((- (offset + 4)) >> 2) & 0x3fffff)), 815 splt->contents + offset + 4); 816 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2, 817 splt->contents + offset + 8); 818 819 *r_offset = offset; 820 821 return offset / PLT32_ENTRY_SIZE - 4; 822} 823 824/* Both the headers and the entries are icache aligned. */ 825#define PLT64_ENTRY_SIZE 32 826#define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE) 827#define PLT64_LARGE_THRESHOLD 32768 828 829static int 830sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset, 831 bfd_vma max, bfd_vma *r_offset) 832{ 833 unsigned char *entry = splt->contents + offset; 834 const unsigned int nop = SPARC_NOP; 835 int plt_index; 836 837 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) 838 { 839 unsigned int sethi, ba; 840 841 *r_offset = offset; 842 843 plt_index = (offset / PLT64_ENTRY_SIZE); 844 845 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE); 846 ba = 0x30680000 847 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff); 848 849 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry); 850 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4); 851 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); 852 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12); 853 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16); 854 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20); 855 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24); 856 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28); 857 } 858 else 859 { 860 unsigned char *ptr; 861 unsigned int ldx; 862 int block, last_block, ofs, last_ofs, chunks_this_block; 863 const int insn_chunk_size = (6 * 4); 864 const int ptr_chunk_size = (1 * 8); 865 const int entries_per_block = 160; 866 const int block_size = entries_per_block * (insn_chunk_size 867 + ptr_chunk_size); 868 869 /* Entries 32768 and higher are grouped into blocks of 160. 870 The blocks are further subdivided into 160 sequences of 871 6 instructions and 160 pointers. If a block does not require 872 the full 160 entries, let's say it requires N, then there 873 will be N sequences of 6 instructions and N pointers. */ 874 875 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE); 876 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE); 877 878 block = offset / block_size; 879 last_block = max / block_size; 880 if (block != last_block) 881 { 882 chunks_this_block = 160; 883 } 884 else 885 { 886 last_ofs = max % block_size; 887 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size); 888 } 889 890 ofs = offset % block_size; 891 892 plt_index = (PLT64_LARGE_THRESHOLD + 893 (block * 160) + 894 (ofs / insn_chunk_size)); 895 896 ptr = splt->contents 897 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) 898 + (block * block_size) 899 + (chunks_this_block * insn_chunk_size) 900 + (ofs / insn_chunk_size) * ptr_chunk_size; 901 902 *r_offset = (bfd_vma) (ptr - splt->contents); 903 904 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff); 905 906 /* mov %o7,%g5 907 call .+8 908 nop 909 ldx [%o7+P],%g1 910 jmpl %o7+%g1,%g1 911 mov %g5,%o7 */ 912 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry); 913 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4); 914 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8); 915 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12); 916 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16); 917 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20); 918 919 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr); 920 } 921 922 return plt_index - 4; 923} 924 925/* The format of the first PLT entry in a VxWorks executable. */ 926static const bfd_vma sparc_vxworks_exec_plt0_entry[] = 927 { 928 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */ 929 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */ 930 0xc4008000, /* ld [ %g2 ], %g2 */ 931 0x81c08000, /* jmp %g2 */ 932 0x01000000 /* nop */ 933 }; 934 935/* The format of subsequent PLT entries. */ 936static const bfd_vma sparc_vxworks_exec_plt_entry[] = 937 { 938 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */ 939 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */ 940 0xc2004000, /* ld [ %g1 ], %g1 */ 941 0x81c04000, /* jmp %g1 */ 942 0x01000000, /* nop */ 943 0x03000000, /* sethi %hi(f@pltindex), %g1 */ 944 0x10800000, /* b _PLT_resolve */ 945 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */ 946 }; 947 948/* The format of the first PLT entry in a VxWorks shared object. */ 949static const bfd_vma sparc_vxworks_shared_plt0_entry[] = 950 { 951 0xc405e008, /* ld [ %l7 + 8 ], %g2 */ 952 0x81c08000, /* jmp %g2 */ 953 0x01000000 /* nop */ 954 }; 955 956/* The format of subsequent PLT entries. */ 957static const bfd_vma sparc_vxworks_shared_plt_entry[] = 958 { 959 0x03000000, /* sethi %hi(f@got), %g1 */ 960 0x82106000, /* or %g1, %lo(f@got), %g1 */ 961 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */ 962 0x81c04000, /* jmp %g1 */ 963 0x01000000, /* nop */ 964 0x03000000, /* sethi %hi(f@pltindex), %g1 */ 965 0x10800000, /* b _PLT_resolve */ 966 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */ 967 }; 968 969#define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \ 970 htab->put_word(bfd, val, ptr) 971 972#define SPARC_ELF_R_INFO(htab, in_rel, index, type) \ 973 htab->r_info(in_rel, index, type) 974 975#define SPARC_ELF_R_SYMNDX(htab, r_info) \ 976 htab->r_symndx(r_info) 977 978#define SPARC_ELF_WORD_BYTES(htab) \ 979 htab->bytes_per_word 980 981#define SPARC_ELF_RELA_BYTES(htab) \ 982 htab->bytes_per_rela 983 984#define SPARC_ELF_DTPOFF_RELOC(htab) \ 985 htab->dtpoff_reloc 986 987#define SPARC_ELF_DTPMOD_RELOC(htab) \ 988 htab->dtpmod_reloc 989 990#define SPARC_ELF_TPOFF_RELOC(htab) \ 991 htab->tpoff_reloc 992 993#define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \ 994 htab->build_plt_entry (obfd, splt, off, max, r_off) 995 996/* Create an entry in an SPARC ELF linker hash table. */ 997 998static struct bfd_hash_entry * 999link_hash_newfunc (struct bfd_hash_entry *entry, 1000 struct bfd_hash_table *table, const char *string) 1001{ 1002 /* Allocate the structure if it has not already been allocated by a 1003 subclass. */ 1004 if (entry == NULL) 1005 { 1006 entry = bfd_hash_allocate (table, 1007 sizeof (struct _bfd_sparc_elf_link_hash_entry)); 1008 if (entry == NULL) 1009 return entry; 1010 } 1011 1012 /* Call the allocation method of the superclass. */ 1013 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1014 if (entry != NULL) 1015 { 1016 struct _bfd_sparc_elf_link_hash_entry *eh; 1017 1018 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry; 1019 eh->dyn_relocs = NULL; 1020 eh->tls_type = GOT_UNKNOWN; 1021 } 1022 1023 return entry; 1024} 1025 1026/* The name of the dynamic interpreter. This is put in the .interp 1027 section. */ 1028 1029#define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 1030#define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" 1031 1032/* Compute a hash of a local hash entry. We use elf_link_hash_entry 1033 for local symbol so that we can handle local STT_GNU_IFUNC symbols 1034 as global symbol. We reuse indx and dynstr_index for local symbol 1035 hash since they aren't used by global symbols in this backend. */ 1036 1037static hashval_t 1038elf_sparc_local_htab_hash (const void *ptr) 1039{ 1040 struct elf_link_hash_entry *h 1041 = (struct elf_link_hash_entry *) ptr; 1042 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); 1043} 1044 1045/* Compare local hash entries. */ 1046 1047static int 1048elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2) 1049{ 1050 struct elf_link_hash_entry *h1 1051 = (struct elf_link_hash_entry *) ptr1; 1052 struct elf_link_hash_entry *h2 1053 = (struct elf_link_hash_entry *) ptr2; 1054 1055 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; 1056} 1057 1058/* Find and/or create a hash entry for local symbol. */ 1059 1060static struct elf_link_hash_entry * 1061elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab, 1062 bfd *abfd, const Elf_Internal_Rela *rel, 1063 bfd_boolean create) 1064{ 1065 struct _bfd_sparc_elf_link_hash_entry e, *ret; 1066 asection *sec = abfd->sections; 1067 unsigned long r_symndx; 1068 hashval_t h; 1069 void **slot; 1070 1071 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); 1072 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx); 1073 1074 e.elf.indx = sec->id; 1075 e.elf.dynstr_index = r_symndx; 1076 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, 1077 create ? INSERT : NO_INSERT); 1078 1079 if (!slot) 1080 return NULL; 1081 1082 if (*slot) 1083 { 1084 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot; 1085 return &ret->elf; 1086 } 1087 1088 ret = (struct _bfd_sparc_elf_link_hash_entry *) 1089 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, 1090 sizeof (struct _bfd_sparc_elf_link_hash_entry)); 1091 if (ret) 1092 { 1093 memset (ret, 0, sizeof (*ret)); 1094 ret->elf.indx = sec->id; 1095 ret->elf.dynstr_index = r_symndx; 1096 ret->elf.dynindx = -1; 1097 ret->elf.plt.offset = (bfd_vma) -1; 1098 ret->elf.got.offset = (bfd_vma) -1; 1099 *slot = ret; 1100 } 1101 return &ret->elf; 1102} 1103 1104/* Destroy a SPARC ELF linker hash table. */ 1105 1106static void 1107_bfd_sparc_elf_link_hash_table_free (bfd *obfd) 1108{ 1109 struct _bfd_sparc_elf_link_hash_table *htab 1110 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash; 1111 1112 if (htab->loc_hash_table) 1113 htab_delete (htab->loc_hash_table); 1114 if (htab->loc_hash_memory) 1115 objalloc_free ((struct objalloc *) htab->loc_hash_memory); 1116 _bfd_elf_link_hash_table_free (obfd); 1117} 1118 1119/* Create a SPARC ELF linker hash table. */ 1120 1121struct bfd_link_hash_table * 1122_bfd_sparc_elf_link_hash_table_create (bfd *abfd) 1123{ 1124 struct _bfd_sparc_elf_link_hash_table *ret; 1125 bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table); 1126 1127 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt); 1128 if (ret == NULL) 1129 return NULL; 1130 1131 if (ABI_64_P (abfd)) 1132 { 1133 ret->put_word = sparc_put_word_64; 1134 ret->r_info = sparc_elf_r_info_64; 1135 ret->r_symndx = sparc_elf_r_symndx_64; 1136 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64; 1137 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64; 1138 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64; 1139 ret->word_align_power = 3; 1140 ret->align_power_max = 4; 1141 ret->bytes_per_word = 8; 1142 ret->bytes_per_rela = sizeof (Elf64_External_Rela); 1143 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; 1144 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; 1145 1146 ret->build_plt_entry = sparc64_plt_entry_build; 1147 ret->plt_header_size = PLT64_HEADER_SIZE; 1148 ret->plt_entry_size = PLT64_ENTRY_SIZE; 1149 } 1150 else 1151 { 1152 ret->put_word = sparc_put_word_32; 1153 ret->r_info = sparc_elf_r_info_32; 1154 ret->r_symndx = sparc_elf_r_symndx_32; 1155 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32; 1156 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32; 1157 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32; 1158 ret->word_align_power = 2; 1159 ret->align_power_max = 3; 1160 ret->bytes_per_word = 4; 1161 ret->bytes_per_rela = sizeof (Elf32_External_Rela); 1162 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; 1163 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; 1164 1165 ret->build_plt_entry = sparc32_plt_entry_build; 1166 ret->plt_header_size = PLT32_HEADER_SIZE; 1167 ret->plt_entry_size = PLT32_ENTRY_SIZE; 1168 } 1169 1170 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1171 sizeof (struct _bfd_sparc_elf_link_hash_entry), 1172 SPARC_ELF_DATA)) 1173 { 1174 free (ret); 1175 return NULL; 1176 } 1177 1178 ret->loc_hash_table = htab_try_create (1024, 1179 elf_sparc_local_htab_hash, 1180 elf_sparc_local_htab_eq, 1181 NULL); 1182 ret->loc_hash_memory = objalloc_create (); 1183 if (!ret->loc_hash_table || !ret->loc_hash_memory) 1184 { 1185 _bfd_sparc_elf_link_hash_table_free (abfd); 1186 return NULL; 1187 } 1188 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free; 1189 1190 return &ret->elf.root; 1191} 1192 1193/* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and 1194 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1195 hash table. */ 1196 1197bfd_boolean 1198_bfd_sparc_elf_create_dynamic_sections (bfd *dynobj, 1199 struct bfd_link_info *info) 1200{ 1201 struct _bfd_sparc_elf_link_hash_table *htab; 1202 1203 htab = _bfd_sparc_elf_hash_table (info); 1204 BFD_ASSERT (htab != NULL); 1205 1206 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 1207 return FALSE; 1208 1209 if (htab->is_vxworks) 1210 { 1211 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) 1212 return FALSE; 1213 if (bfd_link_pic (info)) 1214 { 1215 htab->plt_header_size 1216 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); 1217 htab->plt_entry_size 1218 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry); 1219 } 1220 else 1221 { 1222 htab->plt_header_size 1223 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry); 1224 htab->plt_entry_size 1225 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry); 1226 } 1227 } 1228 1229 if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss 1230 || (!bfd_link_pic (info) && !htab->elf.srelbss)) 1231 abort (); 1232 1233 return TRUE; 1234} 1235 1236static bfd_boolean 1237create_ifunc_sections (bfd *abfd, struct bfd_link_info *info) 1238{ 1239 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1240 struct elf_link_hash_table *htab = elf_hash_table (info); 1241 flagword flags, pltflags; 1242 asection *s; 1243 1244 if (htab->irelifunc != NULL || htab->iplt != NULL) 1245 return TRUE; 1246 1247 flags = bed->dynamic_sec_flags; 1248 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD; 1249 1250 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags); 1251 if (s == NULL 1252 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1253 return FALSE; 1254 htab->iplt = s; 1255 1256 s = bfd_make_section_with_flags (abfd, ".rela.iplt", 1257 flags | SEC_READONLY); 1258 if (s == NULL 1259 || ! bfd_set_section_alignment (abfd, s, 1260 bed->s->log_file_align)) 1261 return FALSE; 1262 htab->irelplt = s; 1263 1264 return TRUE; 1265} 1266 1267/* Copy the extra info we tack onto an elf_link_hash_entry. */ 1268 1269void 1270_bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info, 1271 struct elf_link_hash_entry *dir, 1272 struct elf_link_hash_entry *ind) 1273{ 1274 struct _bfd_sparc_elf_link_hash_entry *edir, *eind; 1275 1276 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir; 1277 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind; 1278 1279 if (eind->dyn_relocs != NULL) 1280 { 1281 if (edir->dyn_relocs != NULL) 1282 { 1283 struct _bfd_sparc_elf_dyn_relocs **pp; 1284 struct _bfd_sparc_elf_dyn_relocs *p; 1285 1286 /* Add reloc counts against the indirect sym to the direct sym 1287 list. Merge any entries against the same section. */ 1288 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1289 { 1290 struct _bfd_sparc_elf_dyn_relocs *q; 1291 1292 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1293 if (q->sec == p->sec) 1294 { 1295 q->pc_count += p->pc_count; 1296 q->count += p->count; 1297 *pp = p->next; 1298 break; 1299 } 1300 if (q == NULL) 1301 pp = &p->next; 1302 } 1303 *pp = edir->dyn_relocs; 1304 } 1305 1306 edir->dyn_relocs = eind->dyn_relocs; 1307 eind->dyn_relocs = NULL; 1308 } 1309 1310 if (ind->root.type == bfd_link_hash_indirect 1311 && dir->got.refcount <= 0) 1312 { 1313 edir->tls_type = eind->tls_type; 1314 eind->tls_type = GOT_UNKNOWN; 1315 } 1316 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1317} 1318 1319static int 1320sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd, 1321 int r_type, int is_local) 1322{ 1323 if (! ABI_64_P (abfd) 1324 && r_type == R_SPARC_TLS_GD_HI22 1325 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd) 1326 r_type = R_SPARC_REV32; 1327 1328 if (bfd_link_pic (info)) 1329 return r_type; 1330 1331 switch (r_type) 1332 { 1333 case R_SPARC_TLS_GD_HI22: 1334 if (is_local) 1335 return R_SPARC_TLS_LE_HIX22; 1336 return R_SPARC_TLS_IE_HI22; 1337 case R_SPARC_TLS_GD_LO10: 1338 if (is_local) 1339 return R_SPARC_TLS_LE_LOX10; 1340 return R_SPARC_TLS_IE_LO10; 1341 case R_SPARC_TLS_IE_HI22: 1342 if (is_local) 1343 return R_SPARC_TLS_LE_HIX22; 1344 return r_type; 1345 case R_SPARC_TLS_IE_LO10: 1346 if (is_local) 1347 return R_SPARC_TLS_LE_LOX10; 1348 return r_type; 1349 case R_SPARC_TLS_LDM_HI22: 1350 return R_SPARC_TLS_LE_HIX22; 1351 case R_SPARC_TLS_LDM_LO10: 1352 return R_SPARC_TLS_LE_LOX10; 1353 } 1354 1355 return r_type; 1356} 1357 1358/* Look through the relocs for a section during the first phase, and 1359 allocate space in the global offset table or procedure linkage 1360 table. */ 1361 1362bfd_boolean 1363_bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1364 asection *sec, const Elf_Internal_Rela *relocs) 1365{ 1366 struct _bfd_sparc_elf_link_hash_table *htab; 1367 Elf_Internal_Shdr *symtab_hdr; 1368 struct elf_link_hash_entry **sym_hashes; 1369 const Elf_Internal_Rela *rel; 1370 const Elf_Internal_Rela *rel_end; 1371 asection *sreloc; 1372 int num_relocs; 1373 bfd_boolean checked_tlsgd = FALSE; 1374 1375 if (bfd_link_relocatable (info)) 1376 return TRUE; 1377 1378 htab = _bfd_sparc_elf_hash_table (info); 1379 BFD_ASSERT (htab != NULL); 1380 symtab_hdr = &elf_symtab_hdr (abfd); 1381 sym_hashes = elf_sym_hashes (abfd); 1382 1383 sreloc = NULL; 1384 1385 if (ABI_64_P (abfd)) 1386 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec)); 1387 else 1388 num_relocs = sec->reloc_count; 1389 1390 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0); 1391 1392 if (htab->elf.dynobj == NULL) 1393 htab->elf.dynobj = abfd; 1394 if (!create_ifunc_sections (htab->elf.dynobj, info)) 1395 return FALSE; 1396 1397 rel_end = relocs + num_relocs; 1398 for (rel = relocs; rel < rel_end; rel++) 1399 { 1400 unsigned int r_type; 1401 unsigned long r_symndx; 1402 struct elf_link_hash_entry *h; 1403 Elf_Internal_Sym *isym; 1404 1405 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); 1406 r_type = SPARC_ELF_R_TYPE (rel->r_info); 1407 1408 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1409 { 1410 /* xgettext:c-format */ 1411 _bfd_error_handler (_("%B: bad symbol index: %d"), abfd, r_symndx); 1412 return FALSE; 1413 } 1414 1415 isym = NULL; 1416 if (r_symndx < symtab_hdr->sh_info) 1417 { 1418 /* A local symbol. */ 1419 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 1420 abfd, r_symndx); 1421 if (isym == NULL) 1422 return FALSE; 1423 1424 /* Check relocation against local STT_GNU_IFUNC symbol. */ 1425 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) 1426 { 1427 h = elf_sparc_get_local_sym_hash (htab, abfd, rel, 1428 TRUE); 1429 if (h == NULL) 1430 return FALSE; 1431 1432 /* Fake a STT_GNU_IFUNC symbol. */ 1433 h->type = STT_GNU_IFUNC; 1434 h->def_regular = 1; 1435 h->ref_regular = 1; 1436 h->forced_local = 1; 1437 h->root.type = bfd_link_hash_defined; 1438 } 1439 else 1440 h = NULL; 1441 } 1442 else 1443 { 1444 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1445 while (h->root.type == bfd_link_hash_indirect 1446 || h->root.type == bfd_link_hash_warning) 1447 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1448 1449 /* PR15323, ref flags aren't set for references in the same 1450 object. */ 1451 h->root.non_ir_ref = 1; 1452 } 1453 1454 if (h && h->type == STT_GNU_IFUNC) 1455 { 1456 if (h->def_regular) 1457 { 1458 h->ref_regular = 1; 1459 h->plt.refcount += 1; 1460 } 1461 } 1462 1463 /* Compatibility with old R_SPARC_REV32 reloc conflicting 1464 with R_SPARC_TLS_GD_HI22. */ 1465 if (! ABI_64_P (abfd) && ! checked_tlsgd) 1466 switch (r_type) 1467 { 1468 case R_SPARC_TLS_GD_HI22: 1469 { 1470 const Elf_Internal_Rela *relt; 1471 1472 for (relt = rel + 1; relt < rel_end; relt++) 1473 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10 1474 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD 1475 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL) 1476 break; 1477 checked_tlsgd = TRUE; 1478 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end; 1479 } 1480 break; 1481 case R_SPARC_TLS_GD_LO10: 1482 case R_SPARC_TLS_GD_ADD: 1483 case R_SPARC_TLS_GD_CALL: 1484 checked_tlsgd = TRUE; 1485 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE; 1486 break; 1487 } 1488 1489 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL); 1490 switch (r_type) 1491 { 1492 case R_SPARC_TLS_LDM_HI22: 1493 case R_SPARC_TLS_LDM_LO10: 1494 htab->tls_ldm_got.refcount += 1; 1495 break; 1496 1497 case R_SPARC_TLS_LE_HIX22: 1498 case R_SPARC_TLS_LE_LOX10: 1499 if (bfd_link_pic (info)) 1500 goto r_sparc_plt32; 1501 break; 1502 1503 case R_SPARC_TLS_IE_HI22: 1504 case R_SPARC_TLS_IE_LO10: 1505 if (bfd_link_pic (info)) 1506 info->flags |= DF_STATIC_TLS; 1507 /* Fall through */ 1508 1509 case R_SPARC_GOT10: 1510 case R_SPARC_GOT13: 1511 case R_SPARC_GOT22: 1512 case R_SPARC_GOTDATA_HIX22: 1513 case R_SPARC_GOTDATA_LOX10: 1514 case R_SPARC_GOTDATA_OP_HIX22: 1515 case R_SPARC_GOTDATA_OP_LOX10: 1516 case R_SPARC_TLS_GD_HI22: 1517 case R_SPARC_TLS_GD_LO10: 1518 /* This symbol requires a global offset table entry. */ 1519 { 1520 int tls_type, old_tls_type; 1521 1522 switch (r_type) 1523 { 1524 default: 1525 case R_SPARC_GOT10: 1526 case R_SPARC_GOT13: 1527 case R_SPARC_GOT22: 1528 case R_SPARC_GOTDATA_OP_HIX22: 1529 case R_SPARC_GOTDATA_OP_LOX10: 1530 tls_type = GOT_NORMAL; 1531 break; 1532 case R_SPARC_TLS_GD_HI22: 1533 case R_SPARC_TLS_GD_LO10: 1534 tls_type = GOT_TLS_GD; 1535 break; 1536 case R_SPARC_TLS_IE_HI22: 1537 case R_SPARC_TLS_IE_LO10: 1538 tls_type = GOT_TLS_IE; 1539 break; 1540 } 1541 1542 if (h != NULL) 1543 { 1544 h->got.refcount += 1; 1545 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 1546 } 1547 else 1548 { 1549 bfd_signed_vma *local_got_refcounts; 1550 1551 /* This is a global offset table entry for a local symbol. */ 1552 local_got_refcounts = elf_local_got_refcounts (abfd); 1553 if (local_got_refcounts == NULL) 1554 { 1555 bfd_size_type size; 1556 1557 size = symtab_hdr->sh_info; 1558 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1559 local_got_refcounts = ((bfd_signed_vma *) 1560 bfd_zalloc (abfd, size)); 1561 if (local_got_refcounts == NULL) 1562 return FALSE; 1563 elf_local_got_refcounts (abfd) = local_got_refcounts; 1564 _bfd_sparc_elf_local_got_tls_type (abfd) 1565 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1566 } 1567 switch (r_type) 1568 { 1569 case R_SPARC_GOTDATA_OP_HIX22: 1570 case R_SPARC_GOTDATA_OP_LOX10: 1571 break; 1572 1573 default: 1574 local_got_refcounts[r_symndx] += 1; 1575 break; 1576 } 1577 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx]; 1578 } 1579 1580 /* If a TLS symbol is accessed using IE at least once, 1581 there is no point to use dynamic model for it. */ 1582 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1583 && (old_tls_type != GOT_TLS_GD 1584 || tls_type != GOT_TLS_IE)) 1585 { 1586 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1587 tls_type = old_tls_type; 1588 else 1589 { 1590 _bfd_error_handler 1591 /* xgettext:c-format */ 1592 (_("%B: `%s' accessed both as normal and thread local symbol"), 1593 abfd, h ? h->root.root.string : "<local>"); 1594 return FALSE; 1595 } 1596 } 1597 1598 if (old_tls_type != tls_type) 1599 { 1600 if (h != NULL) 1601 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type; 1602 else 1603 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1604 } 1605 } 1606 1607 if (htab->elf.sgot == NULL) 1608 { 1609 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) 1610 return FALSE; 1611 } 1612 break; 1613 1614 case R_SPARC_TLS_GD_CALL: 1615 case R_SPARC_TLS_LDM_CALL: 1616 if (bfd_link_pic (info)) 1617 { 1618 /* These are basically R_SPARC_TLS_WPLT30 relocs against 1619 __tls_get_addr. */ 1620 struct bfd_link_hash_entry *bh = NULL; 1621 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1622 "__tls_get_addr", 0, 1623 bfd_und_section_ptr, 0, 1624 NULL, FALSE, FALSE, 1625 &bh)) 1626 return FALSE; 1627 h = (struct elf_link_hash_entry *) bh; 1628 } 1629 else 1630 break; 1631 /* Fall through */ 1632 1633 case R_SPARC_PLT32: 1634 case R_SPARC_WPLT30: 1635 case R_SPARC_HIPLT22: 1636 case R_SPARC_LOPLT10: 1637 case R_SPARC_PCPLT32: 1638 case R_SPARC_PCPLT22: 1639 case R_SPARC_PCPLT10: 1640 case R_SPARC_PLT64: 1641 /* This symbol requires a procedure linkage table entry. We 1642 actually build the entry in adjust_dynamic_symbol, 1643 because this might be a case of linking PIC code without 1644 linking in any dynamic objects, in which case we don't 1645 need to generate a procedure linkage table after all. */ 1646 1647 if (h == NULL) 1648 { 1649 if (! ABI_64_P (abfd)) 1650 { 1651 /* The Solaris native assembler will generate a WPLT30 1652 reloc for a local symbol if you assemble a call from 1653 one section to another when using -K pic. We treat 1654 it as WDISP30. */ 1655 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) 1656 goto r_sparc_plt32; 1657 break; 1658 } 1659 /* PR 7027: We need similar behaviour for 64-bit binaries. */ 1660 else if (r_type == R_SPARC_WPLT30) 1661 break; 1662 1663 /* It does not make sense to have a procedure linkage 1664 table entry for a local symbol. */ 1665 bfd_set_error (bfd_error_bad_value); 1666 return FALSE; 1667 } 1668 1669 h->needs_plt = 1; 1670 1671 { 1672 int this_r_type; 1673 1674 this_r_type = SPARC_ELF_R_TYPE (rel->r_info); 1675 if (this_r_type == R_SPARC_PLT32 1676 || this_r_type == R_SPARC_PLT64) 1677 goto r_sparc_plt32; 1678 } 1679 h->plt.refcount += 1; 1680 break; 1681 1682 case R_SPARC_PC10: 1683 case R_SPARC_PC22: 1684 case R_SPARC_PC_HH22: 1685 case R_SPARC_PC_HM10: 1686 case R_SPARC_PC_LM22: 1687 if (h != NULL) 1688 h->non_got_ref = 1; 1689 1690 if (h != NULL 1691 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1692 break; 1693 /* Fall through. */ 1694 1695 case R_SPARC_DISP8: 1696 case R_SPARC_DISP16: 1697 case R_SPARC_DISP32: 1698 case R_SPARC_DISP64: 1699 case R_SPARC_WDISP30: 1700 case R_SPARC_WDISP22: 1701 case R_SPARC_WDISP19: 1702 case R_SPARC_WDISP16: 1703 case R_SPARC_WDISP10: 1704 case R_SPARC_8: 1705 case R_SPARC_16: 1706 case R_SPARC_32: 1707 case R_SPARC_HI22: 1708 case R_SPARC_22: 1709 case R_SPARC_13: 1710 case R_SPARC_LO10: 1711 case R_SPARC_UA16: 1712 case R_SPARC_UA32: 1713 case R_SPARC_10: 1714 case R_SPARC_11: 1715 case R_SPARC_64: 1716 case R_SPARC_OLO10: 1717 case R_SPARC_HH22: 1718 case R_SPARC_HM10: 1719 case R_SPARC_LM22: 1720 case R_SPARC_7: 1721 case R_SPARC_5: 1722 case R_SPARC_6: 1723 case R_SPARC_HIX22: 1724 case R_SPARC_LOX10: 1725 case R_SPARC_H44: 1726 case R_SPARC_M44: 1727 case R_SPARC_L44: 1728 case R_SPARC_H34: 1729 case R_SPARC_UA64: 1730 if (h != NULL) 1731 h->non_got_ref = 1; 1732 1733 r_sparc_plt32: 1734 if (h != NULL && !bfd_link_pic (info)) 1735 { 1736 /* We may need a .plt entry if the function this reloc 1737 refers to is in a shared lib. */ 1738 h->plt.refcount += 1; 1739 } 1740 1741 /* If we are creating a shared library, and this is a reloc 1742 against a global symbol, or a non PC relative reloc 1743 against a local symbol, then we need to copy the reloc 1744 into the shared library. However, if we are linking with 1745 -Bsymbolic, we do not need to copy a reloc against a 1746 global symbol which is defined in an object we are 1747 including in the link (i.e., DEF_REGULAR is set). At 1748 this point we have not seen all the input files, so it is 1749 possible that DEF_REGULAR is not set now but will be set 1750 later (it is never cleared). In case of a weak definition, 1751 DEF_REGULAR may be cleared later by a strong definition in 1752 a shared library. We account for that possibility below by 1753 storing information in the relocs_copied field of the hash 1754 table entry. A similar situation occurs when creating 1755 shared libraries and symbol visibility changes render the 1756 symbol local. 1757 1758 If on the other hand, we are creating an executable, we 1759 may need to keep relocations for symbols satisfied by a 1760 dynamic library if we manage to avoid copy relocs for the 1761 symbol. */ 1762 if ((bfd_link_pic (info) 1763 && (sec->flags & SEC_ALLOC) != 0 1764 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative 1765 || (h != NULL 1766 && (! SYMBOLIC_BIND (info, h) 1767 || h->root.type == bfd_link_hash_defweak 1768 || !h->def_regular)))) 1769 || (!bfd_link_pic (info) 1770 && (sec->flags & SEC_ALLOC) != 0 1771 && h != NULL 1772 && (h->root.type == bfd_link_hash_defweak 1773 || !h->def_regular)) 1774 || (!bfd_link_pic (info) 1775 && h != NULL 1776 && h->type == STT_GNU_IFUNC)) 1777 { 1778 struct _bfd_sparc_elf_dyn_relocs *p; 1779 struct _bfd_sparc_elf_dyn_relocs **head; 1780 1781 /* When creating a shared object, we must copy these 1782 relocs into the output file. We create a reloc 1783 section in dynobj and make room for the reloc. */ 1784 if (sreloc == NULL) 1785 { 1786 sreloc = _bfd_elf_make_dynamic_reloc_section 1787 (sec, htab->elf.dynobj, htab->word_align_power, 1788 abfd, /*rela?*/ TRUE); 1789 1790 if (sreloc == NULL) 1791 return FALSE; 1792 } 1793 1794 /* If this is a global symbol, we count the number of 1795 relocations we need for this symbol. */ 1796 if (h != NULL) 1797 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs; 1798 else 1799 { 1800 /* Track dynamic relocs needed for local syms too. 1801 We really need local syms available to do this 1802 easily. Oh well. */ 1803 asection *s; 1804 void *vpp; 1805 1806 BFD_ASSERT (isym != NULL); 1807 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 1808 if (s == NULL) 1809 s = sec; 1810 1811 vpp = &elf_section_data (s)->local_dynrel; 1812 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp; 1813 } 1814 1815 p = *head; 1816 if (p == NULL || p->sec != sec) 1817 { 1818 bfd_size_type amt = sizeof *p; 1819 p = ((struct _bfd_sparc_elf_dyn_relocs *) 1820 bfd_alloc (htab->elf.dynobj, amt)); 1821 if (p == NULL) 1822 return FALSE; 1823 p->next = *head; 1824 *head = p; 1825 p->sec = sec; 1826 p->count = 0; 1827 p->pc_count = 0; 1828 } 1829 1830 p->count += 1; 1831 if (_bfd_sparc_elf_howto_table[r_type].pc_relative) 1832 p->pc_count += 1; 1833 } 1834 1835 break; 1836 1837 case R_SPARC_GNU_VTINHERIT: 1838 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1839 return FALSE; 1840 break; 1841 1842 case R_SPARC_GNU_VTENTRY: 1843 BFD_ASSERT (h != NULL); 1844 if (h != NULL 1845 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1846 return FALSE; 1847 break; 1848 1849 case R_SPARC_REGISTER: 1850 /* Nothing to do. */ 1851 break; 1852 1853 default: 1854 break; 1855 } 1856 } 1857 1858 return TRUE; 1859} 1860 1861asection * 1862_bfd_sparc_elf_gc_mark_hook (asection *sec, 1863 struct bfd_link_info *info, 1864 Elf_Internal_Rela *rel, 1865 struct elf_link_hash_entry *h, 1866 Elf_Internal_Sym *sym) 1867{ 1868 if (h != NULL) 1869 switch (SPARC_ELF_R_TYPE (rel->r_info)) 1870 { 1871 case R_SPARC_GNU_VTINHERIT: 1872 case R_SPARC_GNU_VTENTRY: 1873 return NULL; 1874 } 1875 1876 /* FIXME: The test here, in check_relocs and in relocate_section 1877 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 1878 if (bfd_link_pic (info)) 1879 { 1880 switch (SPARC_ELF_R_TYPE (rel->r_info)) 1881 { 1882 case R_SPARC_TLS_GD_CALL: 1883 case R_SPARC_TLS_LDM_CALL: 1884 /* This reloc implicitly references __tls_get_addr. We know 1885 another reloc will reference the same symbol as the one 1886 on this reloc, so the real symbol and section will be 1887 gc marked when processing the other reloc. That lets 1888 us handle __tls_get_addr here. */ 1889 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 1890 FALSE, FALSE, TRUE); 1891 BFD_ASSERT (h != NULL); 1892 h->mark = 1; 1893 if (h->u.weakdef != NULL) 1894 h->u.weakdef->mark = 1; 1895 sym = NULL; 1896 } 1897 } 1898 1899 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1900} 1901 1902static Elf_Internal_Rela * 1903sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel, 1904 Elf_Internal_Rela *relend, 1905 bfd_vma offset) 1906{ 1907 while (rel < relend) 1908 { 1909 if (rel->r_offset == offset) 1910 return rel; 1911 rel++; 1912 } 1913 return NULL; 1914} 1915 1916/* Update the got entry reference counts for the section being removed. */ 1917bfd_boolean 1918_bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 1919 asection *sec, const Elf_Internal_Rela *relocs) 1920{ 1921 struct _bfd_sparc_elf_link_hash_table *htab; 1922 Elf_Internal_Shdr *symtab_hdr; 1923 struct elf_link_hash_entry **sym_hashes; 1924 bfd_signed_vma *local_got_refcounts; 1925 const Elf_Internal_Rela *rel, *relend; 1926 1927 if (bfd_link_relocatable (info)) 1928 return TRUE; 1929 1930 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0); 1931 1932 elf_section_data (sec)->local_dynrel = NULL; 1933 1934 htab = _bfd_sparc_elf_hash_table (info); 1935 BFD_ASSERT (htab != NULL); 1936 symtab_hdr = &elf_symtab_hdr (abfd); 1937 sym_hashes = elf_sym_hashes (abfd); 1938 local_got_refcounts = elf_local_got_refcounts (abfd); 1939 1940 relend = relocs + sec->reloc_count; 1941 for (rel = relocs; rel < relend; rel++) 1942 { 1943 unsigned long r_symndx; 1944 unsigned int r_type; 1945 struct elf_link_hash_entry *h = NULL; 1946 1947 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); 1948 if (r_symndx >= symtab_hdr->sh_info) 1949 { 1950 struct _bfd_sparc_elf_link_hash_entry *eh; 1951 struct _bfd_sparc_elf_dyn_relocs **pp; 1952 struct _bfd_sparc_elf_dyn_relocs *p; 1953 1954 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1955 while (h->root.type == bfd_link_hash_indirect 1956 || h->root.type == bfd_link_hash_warning) 1957 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1958 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 1959 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 1960 if (p->sec == sec) 1961 { 1962 /* Everything must go for SEC. */ 1963 *pp = p->next; 1964 break; 1965 } 1966 } 1967 1968 r_type = SPARC_ELF_R_TYPE (rel->r_info); 1969 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL); 1970 switch (r_type) 1971 { 1972 case R_SPARC_TLS_LDM_HI22: 1973 case R_SPARC_TLS_LDM_LO10: 1974 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0) 1975 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1; 1976 break; 1977 1978 case R_SPARC_TLS_GD_HI22: 1979 case R_SPARC_TLS_GD_LO10: 1980 case R_SPARC_TLS_IE_HI22: 1981 case R_SPARC_TLS_IE_LO10: 1982 case R_SPARC_GOT10: 1983 case R_SPARC_GOT13: 1984 case R_SPARC_GOT22: 1985 case R_SPARC_GOTDATA_HIX22: 1986 case R_SPARC_GOTDATA_LOX10: 1987 case R_SPARC_GOTDATA_OP_HIX22: 1988 case R_SPARC_GOTDATA_OP_LOX10: 1989 if (h != NULL) 1990 { 1991 if (h->got.refcount > 0) 1992 h->got.refcount--; 1993 } 1994 else 1995 { 1996 switch (r_type) 1997 { 1998 case R_SPARC_GOTDATA_OP_HIX22: 1999 case R_SPARC_GOTDATA_OP_LOX10: 2000 break; 2001 2002 default: 2003 if (local_got_refcounts[r_symndx] > 0) 2004 local_got_refcounts[r_symndx]--; 2005 break; 2006 } 2007 } 2008 break; 2009 2010 case R_SPARC_PC10: 2011 case R_SPARC_PC22: 2012 case R_SPARC_PC_HH22: 2013 case R_SPARC_PC_HM10: 2014 case R_SPARC_PC_LM22: 2015 if (h != NULL 2016 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2017 break; 2018 /* Fall through. */ 2019 2020 case R_SPARC_DISP8: 2021 case R_SPARC_DISP16: 2022 case R_SPARC_DISP32: 2023 case R_SPARC_DISP64: 2024 case R_SPARC_WDISP30: 2025 case R_SPARC_WDISP22: 2026 case R_SPARC_WDISP19: 2027 case R_SPARC_WDISP16: 2028 case R_SPARC_WDISP10: 2029 case R_SPARC_8: 2030 case R_SPARC_16: 2031 case R_SPARC_32: 2032 case R_SPARC_HI22: 2033 case R_SPARC_22: 2034 case R_SPARC_13: 2035 case R_SPARC_LO10: 2036 case R_SPARC_UA16: 2037 case R_SPARC_UA32: 2038 case R_SPARC_PLT32: 2039 case R_SPARC_10: 2040 case R_SPARC_11: 2041 case R_SPARC_64: 2042 case R_SPARC_OLO10: 2043 case R_SPARC_HH22: 2044 case R_SPARC_HM10: 2045 case R_SPARC_LM22: 2046 case R_SPARC_7: 2047 case R_SPARC_5: 2048 case R_SPARC_6: 2049 case R_SPARC_HIX22: 2050 case R_SPARC_LOX10: 2051 case R_SPARC_H44: 2052 case R_SPARC_M44: 2053 case R_SPARC_L44: 2054 case R_SPARC_H34: 2055 case R_SPARC_UA64: 2056 if (bfd_link_pic (info)) 2057 break; 2058 /* Fall through. */ 2059 2060 case R_SPARC_WPLT30: 2061 if (h != NULL) 2062 { 2063 if (h->plt.refcount > 0) 2064 h->plt.refcount--; 2065 } 2066 break; 2067 2068 default: 2069 break; 2070 } 2071 } 2072 2073 return TRUE; 2074} 2075 2076/* Adjust a symbol defined by a dynamic object and referenced by a 2077 regular object. The current definition is in some section of the 2078 dynamic object, but we're not including those sections. We have to 2079 change the definition to something the rest of the link can 2080 understand. */ 2081 2082bfd_boolean 2083_bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2084 struct elf_link_hash_entry *h) 2085{ 2086 struct _bfd_sparc_elf_link_hash_table *htab; 2087 struct _bfd_sparc_elf_link_hash_entry * eh; 2088 struct _bfd_sparc_elf_dyn_relocs *p; 2089 asection *s, *srel; 2090 2091 htab = _bfd_sparc_elf_hash_table (info); 2092 BFD_ASSERT (htab != NULL); 2093 2094 /* Make sure we know what is going on here. */ 2095 BFD_ASSERT (htab->elf.dynobj != NULL 2096 && (h->needs_plt 2097 || h->type == STT_GNU_IFUNC 2098 || h->u.weakdef != NULL 2099 || (h->def_dynamic 2100 && h->ref_regular 2101 && !h->def_regular))); 2102 2103 /* If this is a function, put it in the procedure linkage table. We 2104 will fill in the contents of the procedure linkage table later 2105 (although we could actually do it here). The STT_NOTYPE 2106 condition is a hack specifically for the Oracle libraries 2107 delivered for Solaris; for some inexplicable reason, they define 2108 some of their functions as STT_NOTYPE when they really should be 2109 STT_FUNC. */ 2110 if (h->type == STT_FUNC 2111 || h->type == STT_GNU_IFUNC 2112 || h->needs_plt 2113 || (h->type == STT_NOTYPE 2114 && (h->root.type == bfd_link_hash_defined 2115 || h->root.type == bfd_link_hash_defweak) 2116 && (h->root.u.def.section->flags & SEC_CODE) != 0)) 2117 { 2118 if (h->plt.refcount <= 0 2119 || (h->type != STT_GNU_IFUNC 2120 && (SYMBOL_CALLS_LOCAL (info, h) 2121 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2122 && h->root.type == bfd_link_hash_undefweak)))) 2123 { 2124 /* This case can occur if we saw a WPLT30 reloc in an input 2125 file, but the symbol was never referred to by a dynamic 2126 object, or if all references were garbage collected. In 2127 such a case, we don't actually need to build a procedure 2128 linkage table, and we can just do a WDISP30 reloc instead. */ 2129 h->plt.offset = (bfd_vma) -1; 2130 h->needs_plt = 0; 2131 } 2132 2133 return TRUE; 2134 } 2135 else 2136 h->plt.offset = (bfd_vma) -1; 2137 2138 /* If this is a weak symbol, and there is a real definition, the 2139 processor independent code will have arranged for us to see the 2140 real definition first, and we can just use the same value. */ 2141 if (h->u.weakdef != NULL) 2142 { 2143 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2144 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2145 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2146 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2147 return TRUE; 2148 } 2149 2150 /* This is a reference to a symbol defined by a dynamic object which 2151 is not a function. */ 2152 2153 /* If we are creating a shared library, we must presume that the 2154 only references to the symbol are via the global offset table. 2155 For such cases we need not do anything here; the relocations will 2156 be handled correctly by relocate_section. */ 2157 if (bfd_link_pic (info)) 2158 return TRUE; 2159 2160 /* If there are no references to this symbol that do not use the 2161 GOT, we don't need to generate a copy reloc. */ 2162 if (!h->non_got_ref) 2163 return TRUE; 2164 2165 /* If -z nocopyreloc was given, we won't generate them either. */ 2166 if (info->nocopyreloc) 2167 { 2168 h->non_got_ref = 0; 2169 return TRUE; 2170 } 2171 2172 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 2173 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2174 { 2175 s = p->sec->output_section; 2176 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2177 break; 2178 } 2179 2180 /* If we didn't find any dynamic relocs in read-only sections, then 2181 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2182 if (p == NULL) 2183 { 2184 h->non_got_ref = 0; 2185 return TRUE; 2186 } 2187 2188 /* We must allocate the symbol in our .dynbss section, which will 2189 become part of the .bss section of the executable. There will be 2190 an entry for this symbol in the .dynsym section. The dynamic 2191 object will contain position independent code, so all references 2192 from the dynamic object to this symbol will go through the global 2193 offset table. The dynamic linker will use the .dynsym entry to 2194 determine the address it must put in the global offset table, so 2195 both the dynamic object and the regular object will refer to the 2196 same memory location for the variable. */ 2197 2198 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker 2199 to copy the initial value out of the dynamic object and into the 2200 runtime process image. We need to remember the offset into the 2201 .rel.bss section we are going to use. */ 2202 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2203 { 2204 s = htab->elf.sdynrelro; 2205 srel = htab->elf.sreldynrelro; 2206 } 2207 else 2208 { 2209 s = htab->elf.sdynbss; 2210 srel = htab->elf.srelbss; 2211 } 2212 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2213 { 2214 srel->size += SPARC_ELF_RELA_BYTES (htab); 2215 h->needs_copy = 1; 2216 } 2217 2218 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2219} 2220 2221/* Allocate space in .plt, .got and associated reloc sections for 2222 dynamic relocs. */ 2223 2224static bfd_boolean 2225allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2226{ 2227 struct bfd_link_info *info; 2228 struct _bfd_sparc_elf_link_hash_table *htab; 2229 struct _bfd_sparc_elf_link_hash_entry *eh; 2230 struct _bfd_sparc_elf_dyn_relocs *p; 2231 2232 if (h->root.type == bfd_link_hash_indirect) 2233 return TRUE; 2234 2235 info = (struct bfd_link_info *) inf; 2236 htab = _bfd_sparc_elf_hash_table (info); 2237 BFD_ASSERT (htab != NULL); 2238 2239 if ((htab->elf.dynamic_sections_created 2240 && h->plt.refcount > 0) 2241 || (h->type == STT_GNU_IFUNC 2242 && h->def_regular 2243 && h->ref_regular)) 2244 { 2245 /* Make sure this symbol is output as a dynamic symbol. 2246 Undefined weak syms won't yet be marked as dynamic. */ 2247 if (h->dynindx == -1 2248 && !h->forced_local) 2249 { 2250 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2251 return FALSE; 2252 } 2253 2254 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h) 2255 || (h->type == STT_GNU_IFUNC 2256 && h->def_regular)) 2257 { 2258 asection *s = htab->elf.splt; 2259 2260 if (s == NULL) 2261 s = htab->elf.iplt; 2262 2263 /* Allocate room for the header. */ 2264 if (s->size == 0) 2265 { 2266 s->size = htab->plt_header_size; 2267 2268 /* Allocate space for the .rela.plt.unloaded relocations. */ 2269 if (htab->is_vxworks && !bfd_link_pic (info)) 2270 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2; 2271 } 2272 2273 /* The procedure linkage table size is bounded by the magnitude 2274 of the offset we can describe in the entry. */ 2275 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ? 2276 (((bfd_vma)1 << 31) << 1) : 0x400000)) 2277 { 2278 bfd_set_error (bfd_error_bad_value); 2279 return FALSE; 2280 } 2281 2282 if (SPARC_ELF_WORD_BYTES(htab) == 8 2283 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) 2284 { 2285 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE; 2286 2287 2288 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE; 2289 2290 h->plt.offset = (s->size - (off * 8)); 2291 } 2292 else 2293 h->plt.offset = s->size; 2294 2295 /* If this symbol is not defined in a regular file, and we are 2296 not generating a shared library, then set the symbol to this 2297 location in the .plt. This is required to make function 2298 pointers compare as equal between the normal executable and 2299 the shared library. */ 2300 if (! bfd_link_pic (info) 2301 && !h->def_regular) 2302 { 2303 h->root.u.def.section = s; 2304 h->root.u.def.value = h->plt.offset; 2305 } 2306 2307 /* Make room for this entry. */ 2308 s->size += htab->plt_entry_size; 2309 2310 /* We also need to make an entry in the .rela.plt section. */ 2311 if (s == htab->elf.splt) 2312 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab); 2313 else 2314 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab); 2315 2316 if (htab->is_vxworks) 2317 { 2318 /* Allocate space for the .got.plt entry. */ 2319 htab->elf.sgotplt->size += 4; 2320 2321 /* ...and for the .rela.plt.unloaded relocations. */ 2322 if (!bfd_link_pic (info)) 2323 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3; 2324 } 2325 } 2326 else 2327 { 2328 h->plt.offset = (bfd_vma) -1; 2329 h->needs_plt = 0; 2330 } 2331 } 2332 else 2333 { 2334 h->plt.offset = (bfd_vma) -1; 2335 h->needs_plt = 0; 2336 } 2337 2338 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary, 2339 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */ 2340 if (h->got.refcount > 0 2341 && !bfd_link_pic (info) 2342 && h->dynindx == -1 2343 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2344 h->got.offset = (bfd_vma) -1; 2345 else if (h->got.refcount > 0) 2346 { 2347 asection *s; 2348 bfd_boolean dyn; 2349 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 2350 2351 /* Make sure this symbol is output as a dynamic symbol. 2352 Undefined weak syms won't yet be marked as dynamic. */ 2353 if (h->dynindx == -1 2354 && !h->forced_local) 2355 { 2356 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2357 return FALSE; 2358 } 2359 2360 s = htab->elf.sgot; 2361 h->got.offset = s->size; 2362 s->size += SPARC_ELF_WORD_BYTES (htab); 2363 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */ 2364 if (tls_type == GOT_TLS_GD) 2365 s->size += SPARC_ELF_WORD_BYTES (htab); 2366 dyn = htab->elf.dynamic_sections_created; 2367 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation, 2368 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if 2369 global. */ 2370 if ((tls_type == GOT_TLS_GD && h->dynindx == -1) 2371 || tls_type == GOT_TLS_IE 2372 || h->type == STT_GNU_IFUNC) 2373 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab); 2374 else if (tls_type == GOT_TLS_GD) 2375 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab); 2376 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2377 bfd_link_pic (info), 2378 h)) 2379 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab); 2380 } 2381 else 2382 h->got.offset = (bfd_vma) -1; 2383 2384 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 2385 if (eh->dyn_relocs == NULL) 2386 return TRUE; 2387 2388 /* In the shared -Bsymbolic case, discard space allocated for 2389 dynamic pc-relative relocs against symbols which turn out to be 2390 defined in regular objects. For the normal shared case, discard 2391 space for pc-relative relocs that have become local due to symbol 2392 visibility changes. */ 2393 2394 if (bfd_link_pic (info)) 2395 { 2396 if (SYMBOL_CALLS_LOCAL (info, h)) 2397 { 2398 struct _bfd_sparc_elf_dyn_relocs **pp; 2399 2400 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2401 { 2402 p->count -= p->pc_count; 2403 p->pc_count = 0; 2404 if (p->count == 0) 2405 *pp = p->next; 2406 else 2407 pp = &p->next; 2408 } 2409 } 2410 2411 if (htab->is_vxworks) 2412 { 2413 struct _bfd_sparc_elf_dyn_relocs **pp; 2414 2415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2416 { 2417 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) 2418 *pp = p->next; 2419 else 2420 pp = &p->next; 2421 } 2422 } 2423 2424 /* Also discard relocs on undefined weak syms with non-default 2425 visibility. */ 2426 if (eh->dyn_relocs != NULL 2427 && h->root.type == bfd_link_hash_undefweak) 2428 { 2429 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2430 eh->dyn_relocs = NULL; 2431 2432 /* Make sure undefined weak symbols are output as a dynamic 2433 symbol in PIEs. */ 2434 else if (h->dynindx == -1 2435 && !h->forced_local) 2436 { 2437 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2438 return FALSE; 2439 } 2440 } 2441 } 2442 else 2443 { 2444 /* For the non-shared case, discard space for relocs against 2445 symbols which turn out to need copy relocs or are not 2446 dynamic. */ 2447 2448 if (!h->non_got_ref 2449 && ((h->def_dynamic 2450 && !h->def_regular) 2451 || (htab->elf.dynamic_sections_created 2452 && (h->root.type == bfd_link_hash_undefweak 2453 || h->root.type == bfd_link_hash_undefined)))) 2454 { 2455 /* Make sure this symbol is output as a dynamic symbol. 2456 Undefined weak syms won't yet be marked as dynamic. */ 2457 if (h->dynindx == -1 2458 && !h->forced_local) 2459 { 2460 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2461 return FALSE; 2462 } 2463 2464 /* If that succeeded, we know we'll be keeping all the 2465 relocs. */ 2466 if (h->dynindx != -1) 2467 goto keep; 2468 } 2469 2470 eh->dyn_relocs = NULL; 2471 2472 keep: ; 2473 } 2474 2475 /* Finally, allocate space. */ 2476 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2477 { 2478 asection *sreloc = elf_section_data (p->sec)->sreloc; 2479 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab); 2480 } 2481 2482 return TRUE; 2483} 2484 2485/* Allocate space in .plt, .got and associated reloc sections for 2486 local dynamic relocs. */ 2487 2488static bfd_boolean 2489allocate_local_dynrelocs (void **slot, void *inf) 2490{ 2491 struct elf_link_hash_entry *h 2492 = (struct elf_link_hash_entry *) *slot; 2493 2494 if (h->type != STT_GNU_IFUNC 2495 || !h->def_regular 2496 || !h->ref_regular 2497 || !h->forced_local 2498 || h->root.type != bfd_link_hash_defined) 2499 abort (); 2500 2501 return allocate_dynrelocs (h, inf); 2502} 2503 2504/* Find any dynamic relocs that apply to read-only sections. */ 2505 2506static bfd_boolean 2507readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2508{ 2509 struct _bfd_sparc_elf_link_hash_entry *eh; 2510 struct _bfd_sparc_elf_dyn_relocs *p; 2511 2512 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 2513 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2514 { 2515 asection *s = p->sec->output_section; 2516 2517 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2518 { 2519 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2520 2521 info->flags |= DF_TEXTREL; 2522 2523 /* Not an error, just cut short the traversal. */ 2524 return FALSE; 2525 } 2526 } 2527 return TRUE; 2528} 2529 2530/* Return true if the dynamic symbol for a given section should be 2531 omitted when creating a shared library. */ 2532 2533bfd_boolean 2534_bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd, 2535 struct bfd_link_info *info, 2536 asection *p) 2537{ 2538 /* We keep the .got section symbol so that explicit relocations 2539 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2540 can be turned into relocations against the .got symbol. */ 2541 if (strcmp (p->name, ".got") == 0) 2542 return FALSE; 2543 2544 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2545} 2546 2547/* Set the sizes of the dynamic sections. */ 2548 2549bfd_boolean 2550_bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd, 2551 struct bfd_link_info *info) 2552{ 2553 struct _bfd_sparc_elf_link_hash_table *htab; 2554 bfd *dynobj; 2555 asection *s; 2556 bfd *ibfd; 2557 2558 htab = _bfd_sparc_elf_hash_table (info); 2559 BFD_ASSERT (htab != NULL); 2560 dynobj = htab->elf.dynobj; 2561 BFD_ASSERT (dynobj != NULL); 2562 2563 if (elf_hash_table (info)->dynamic_sections_created) 2564 { 2565 /* Set the contents of the .interp section to the interpreter. */ 2566 if (bfd_link_executable (info) && !info->nointerp) 2567 { 2568 s = bfd_get_linker_section (dynobj, ".interp"); 2569 BFD_ASSERT (s != NULL); 2570 s->size = htab->dynamic_interpreter_size; 2571 s->contents = (unsigned char *) htab->dynamic_interpreter; 2572 } 2573 } 2574 2575 /* Set up .got offsets for local syms, and space for local dynamic 2576 relocs. */ 2577 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2578 { 2579 bfd_signed_vma *local_got; 2580 bfd_signed_vma *end_local_got; 2581 char *local_tls_type; 2582 bfd_size_type locsymcount; 2583 Elf_Internal_Shdr *symtab_hdr; 2584 asection *srel; 2585 2586 if (! is_sparc_elf (ibfd)) 2587 continue; 2588 2589 for (s = ibfd->sections; s != NULL; s = s->next) 2590 { 2591 struct _bfd_sparc_elf_dyn_relocs *p; 2592 2593 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2594 { 2595 if (!bfd_is_abs_section (p->sec) 2596 && bfd_is_abs_section (p->sec->output_section)) 2597 { 2598 /* Input section has been discarded, either because 2599 it is a copy of a linkonce section or due to 2600 linker script /DISCARD/, so we'll be discarding 2601 the relocs too. */ 2602 } 2603 else if (htab->is_vxworks 2604 && strcmp (p->sec->output_section->name, 2605 ".tls_vars") == 0) 2606 { 2607 /* Relocations in vxworks .tls_vars sections are 2608 handled specially by the loader. */ 2609 } 2610 else if (p->count != 0) 2611 { 2612 srel = elf_section_data (p->sec)->sreloc; 2613 if (!htab->elf.dynamic_sections_created) 2614 srel = htab->elf.irelplt; 2615 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab); 2616 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2617 info->flags |= DF_TEXTREL; 2618 } 2619 } 2620 } 2621 2622 local_got = elf_local_got_refcounts (ibfd); 2623 if (!local_got) 2624 continue; 2625 2626 symtab_hdr = &elf_symtab_hdr (ibfd); 2627 locsymcount = symtab_hdr->sh_info; 2628 end_local_got = local_got + locsymcount; 2629 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd); 2630 s = htab->elf.sgot; 2631 srel = htab->elf.srelgot; 2632 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2633 { 2634 if (*local_got > 0) 2635 { 2636 *local_got = s->size; 2637 s->size += SPARC_ELF_WORD_BYTES (htab); 2638 if (*local_tls_type == GOT_TLS_GD) 2639 s->size += SPARC_ELF_WORD_BYTES (htab); 2640 if (bfd_link_pic (info) 2641 || *local_tls_type == GOT_TLS_GD 2642 || *local_tls_type == GOT_TLS_IE) 2643 srel->size += SPARC_ELF_RELA_BYTES (htab); 2644 } 2645 else 2646 *local_got = (bfd_vma) -1; 2647 } 2648 } 2649 2650 if (htab->tls_ldm_got.refcount > 0) 2651 { 2652 /* Allocate 2 got entries and 1 dynamic reloc for 2653 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */ 2654 htab->tls_ldm_got.offset = htab->elf.sgot->size; 2655 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab)); 2656 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab); 2657 } 2658 else 2659 htab->tls_ldm_got.offset = -1; 2660 2661 /* Allocate global sym .plt and .got entries, and space for global 2662 sym dynamic relocs. */ 2663 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2664 2665 /* Allocate .plt and .got entries, and space for local symbols. */ 2666 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info); 2667 2668 if (! ABI_64_P (output_bfd) 2669 && !htab->is_vxworks 2670 && elf_hash_table (info)->dynamic_sections_created) 2671 { 2672 /* Make space for the trailing nop in .plt. */ 2673 if (htab->elf.splt->size > 0) 2674 htab->elf.splt->size += 1 * SPARC_INSN_BYTES; 2675 2676 /* If the .got section is more than 0x1000 bytes, we add 2677 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 2678 bit relocations have a greater chance of working. 2679 2680 FIXME: Make this optimization work for 64-bit too. */ 2681 if (htab->elf.sgot->size >= 0x1000 2682 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2683 elf_hash_table (info)->hgot->root.u.def.value = 0x1000; 2684 } 2685 2686 /* The check_relocs and adjust_dynamic_symbol entry points have 2687 determined the sizes of the various dynamic sections. Allocate 2688 memory for them. */ 2689 for (s = dynobj->sections; s != NULL; s = s->next) 2690 { 2691 if ((s->flags & SEC_LINKER_CREATED) == 0) 2692 continue; 2693 2694 if (s == htab->elf.splt 2695 || s == htab->elf.sgot 2696 || s == htab->elf.sdynbss 2697 || s == htab->elf.sdynrelro 2698 || s == htab->elf.iplt 2699 || s == htab->elf.sgotplt) 2700 { 2701 /* Strip this section if we don't need it; see the 2702 comment below. */ 2703 } 2704 else if (CONST_STRNEQ (s->name, ".rela")) 2705 { 2706 if (s->size != 0) 2707 { 2708 /* We use the reloc_count field as a counter if we need 2709 to copy relocs into the output file. */ 2710 s->reloc_count = 0; 2711 } 2712 } 2713 else 2714 { 2715 /* It's not one of our sections. */ 2716 continue; 2717 } 2718 2719 if (s->size == 0) 2720 { 2721 /* If we don't need this section, strip it from the 2722 output file. This is mostly to handle .rela.bss and 2723 .rela.plt. We must create both sections in 2724 create_dynamic_sections, because they must be created 2725 before the linker maps input sections to output 2726 sections. The linker does that before 2727 adjust_dynamic_symbol is called, and it is that 2728 function which decides whether anything needs to go 2729 into these sections. */ 2730 s->flags |= SEC_EXCLUDE; 2731 continue; 2732 } 2733 2734 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2735 continue; 2736 2737 /* Allocate memory for the section contents. Zero the memory 2738 for the benefit of .rela.plt, which has 4 unused entries 2739 at the beginning, and we don't want garbage. */ 2740 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2741 if (s->contents == NULL) 2742 return FALSE; 2743 } 2744 2745 if (elf_hash_table (info)->dynamic_sections_created) 2746 { 2747 /* Add some entries to the .dynamic section. We fill in the 2748 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we 2749 must add the entries now so that we get the correct size for 2750 the .dynamic section. The DT_DEBUG entry is filled in by the 2751 dynamic linker and used by the debugger. */ 2752#define add_dynamic_entry(TAG, VAL) \ 2753 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2754 2755 if (bfd_link_executable (info)) 2756 { 2757 if (!add_dynamic_entry (DT_DEBUG, 0)) 2758 return FALSE; 2759 } 2760 2761 if (htab->elf.srelplt->size != 0) 2762 { 2763 if (!add_dynamic_entry (DT_PLTGOT, 0) 2764 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2765 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2766 || !add_dynamic_entry (DT_JMPREL, 0)) 2767 return FALSE; 2768 } 2769 2770 if (!add_dynamic_entry (DT_RELA, 0) 2771 || !add_dynamic_entry (DT_RELASZ, 0) 2772 || !add_dynamic_entry (DT_RELAENT, 2773 SPARC_ELF_RELA_BYTES (htab))) 2774 return FALSE; 2775 2776 /* If any dynamic relocs apply to a read-only section, 2777 then we need a DT_TEXTREL entry. */ 2778 if ((info->flags & DF_TEXTREL) == 0) 2779 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2780 2781 if (info->flags & DF_TEXTREL) 2782 { 2783 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2784 return FALSE; 2785 } 2786 2787 if (ABI_64_P (output_bfd)) 2788 { 2789 int reg; 2790 struct _bfd_sparc_elf_app_reg * app_regs; 2791 struct elf_strtab_hash *dynstr; 2792 struct elf_link_hash_table *eht = elf_hash_table (info); 2793 2794 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER 2795 entries if needed. */ 2796 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs; 2797 dynstr = eht->dynstr; 2798 2799 for (reg = 0; reg < 4; reg++) 2800 if (app_regs [reg].name != NULL) 2801 { 2802 struct elf_link_local_dynamic_entry *entry, *e; 2803 2804 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0)) 2805 return FALSE; 2806 2807 entry = (struct elf_link_local_dynamic_entry *) 2808 bfd_hash_allocate (&info->hash->table, sizeof (*entry)); 2809 if (entry == NULL) 2810 return FALSE; 2811 2812 /* We cheat here a little bit: the symbol will not be local, so we 2813 put it at the end of the dynlocal linked list. We will fix it 2814 later on, as we have to fix other fields anyway. */ 2815 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; 2816 entry->isym.st_size = 0; 2817 if (*app_regs [reg].name != '\0') 2818 entry->isym.st_name 2819 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE); 2820 else 2821 entry->isym.st_name = 0; 2822 entry->isym.st_other = 0; 2823 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, 2824 STT_REGISTER); 2825 entry->isym.st_shndx = app_regs [reg].shndx; 2826 entry->isym.st_target_internal = 0; 2827 entry->next = NULL; 2828 entry->input_bfd = output_bfd; 2829 entry->input_indx = -1; 2830 2831 if (eht->dynlocal == NULL) 2832 eht->dynlocal = entry; 2833 else 2834 { 2835 for (e = eht->dynlocal; e->next; e = e->next) 2836 ; 2837 e->next = entry; 2838 } 2839 eht->dynsymcount++; 2840 } 2841 } 2842 if (htab->is_vxworks 2843 && !elf_vxworks_add_dynamic_entries (output_bfd, info)) 2844 return FALSE; 2845 } 2846#undef add_dynamic_entry 2847 2848 return TRUE; 2849} 2850 2851bfd_boolean 2852_bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec) 2853{ 2854 if (!sec->used_by_bfd) 2855 { 2856 struct _bfd_sparc_elf_section_data *sdata; 2857 bfd_size_type amt = sizeof (*sdata); 2858 2859 sdata = bfd_zalloc (abfd, amt); 2860 if (sdata == NULL) 2861 return FALSE; 2862 sec->used_by_bfd = sdata; 2863 } 2864 2865 return _bfd_elf_new_section_hook (abfd, sec); 2866} 2867 2868bfd_boolean 2869_bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED, 2870 struct bfd_section *section, 2871 struct bfd_link_info *link_info ATTRIBUTE_UNUSED, 2872 bfd_boolean *again) 2873{ 2874 if (bfd_link_relocatable (link_info)) 2875 (*link_info->callbacks->einfo) 2876 (_("%P%F: --relax and -r may not be used together\n")); 2877 2878 *again = FALSE; 2879 sec_do_relax (section) = 1; 2880 return TRUE; 2881} 2882 2883/* Return the base VMA address which should be subtracted from real addresses 2884 when resolving @dtpoff relocation. 2885 This is PT_TLS segment p_vaddr. */ 2886 2887static bfd_vma 2888dtpoff_base (struct bfd_link_info *info) 2889{ 2890 /* If tls_sec is NULL, we should have signalled an error already. */ 2891 if (elf_hash_table (info)->tls_sec == NULL) 2892 return 0; 2893 return elf_hash_table (info)->tls_sec->vma; 2894} 2895 2896/* Return the relocation value for @tpoff relocation 2897 if STT_TLS virtual address is ADDRESS. */ 2898 2899static bfd_vma 2900tpoff (struct bfd_link_info *info, bfd_vma address) 2901{ 2902 struct elf_link_hash_table *htab = elf_hash_table (info); 2903 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); 2904 bfd_vma static_tls_size; 2905 2906 /* If tls_sec is NULL, we should have signalled an error already. */ 2907 if (htab->tls_sec == NULL) 2908 return 0; 2909 2910 /* Consider special static TLS alignment requirements. */ 2911 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); 2912 return address - static_tls_size - htab->tls_sec->vma; 2913} 2914 2915/* Return the relocation value for a %gdop relocation. */ 2916 2917static bfd_vma 2918gdopoff (struct bfd_link_info *info, bfd_vma address) 2919{ 2920 struct elf_link_hash_table *htab = elf_hash_table (info); 2921 bfd_vma got_base; 2922 2923 got_base = (htab->hgot->root.u.def.value 2924 + htab->hgot->root.u.def.section->output_offset 2925 + htab->hgot->root.u.def.section->output_section->vma); 2926 2927 return address - got_base; 2928} 2929 2930/* Return whether H is local and its ADDRESS is within 4G of 2931 _GLOBAL_OFFSET_TABLE_ and thus the offset may be calculated by a 2932 sethi, xor sequence. */ 2933 2934static bfd_boolean 2935gdop_relative_offset_ok (struct bfd_link_info *info, 2936 struct elf_link_hash_entry *h, 2937 bfd_vma address ATTRIBUTE_UNUSED) 2938{ 2939 if (!SYMBOL_REFERENCES_LOCAL (info, h)) 2940 return FALSE; 2941 /* If H is undefined, ADDRESS will be zero. We can't allow a 2942 relative offset to "zero" when producing PIEs or shared libs. 2943 Note that to get here with an undefined symbol it must also be 2944 hidden or internal visibility. */ 2945 if (bfd_link_pic (info) 2946 && h != NULL 2947 && (h->root.type == bfd_link_hash_undefweak 2948 || h->root.type == bfd_link_hash_undefined)) 2949 return FALSE; 2950#ifdef BFD64 2951 return gdopoff (info, address) + ((bfd_vma) 1 << 32) < (bfd_vma) 2 << 32; 2952#else 2953 return TRUE; 2954#endif 2955} 2956 2957/* Relocate a SPARC ELF section. */ 2958 2959bfd_boolean 2960_bfd_sparc_elf_relocate_section (bfd *output_bfd, 2961 struct bfd_link_info *info, 2962 bfd *input_bfd, 2963 asection *input_section, 2964 bfd_byte *contents, 2965 Elf_Internal_Rela *relocs, 2966 Elf_Internal_Sym *local_syms, 2967 asection **local_sections) 2968{ 2969 struct _bfd_sparc_elf_link_hash_table *htab; 2970 Elf_Internal_Shdr *symtab_hdr; 2971 struct elf_link_hash_entry **sym_hashes; 2972 bfd_vma *local_got_offsets; 2973 bfd_vma got_base; 2974 asection *sreloc; 2975 Elf_Internal_Rela *rel; 2976 Elf_Internal_Rela *relend; 2977 int num_relocs; 2978 bfd_boolean is_vxworks_tls; 2979 2980 htab = _bfd_sparc_elf_hash_table (info); 2981 BFD_ASSERT (htab != NULL); 2982 symtab_hdr = &elf_symtab_hdr (input_bfd); 2983 sym_hashes = elf_sym_hashes (input_bfd); 2984 local_got_offsets = elf_local_got_offsets (input_bfd); 2985 2986 if (elf_hash_table (info)->hgot == NULL) 2987 got_base = 0; 2988 else 2989 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2990 2991 sreloc = elf_section_data (input_section)->sreloc; 2992 /* We have to handle relocations in vxworks .tls_vars sections 2993 specially, because the dynamic loader is 'weird'. */ 2994 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) 2995 && !strcmp (input_section->output_section->name, 2996 ".tls_vars")); 2997 2998 rel = relocs; 2999 if (ABI_64_P (output_bfd)) 3000 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section)); 3001 else 3002 num_relocs = input_section->reloc_count; 3003 relend = relocs + num_relocs; 3004 for (; rel < relend; rel++) 3005 { 3006 int r_type, tls_type; 3007 reloc_howto_type *howto; 3008 unsigned long r_symndx; 3009 struct elf_link_hash_entry *h; 3010 Elf_Internal_Sym *sym; 3011 asection *sec; 3012 bfd_vma relocation, off; 3013 bfd_reloc_status_type r; 3014 bfd_boolean is_plt = FALSE; 3015 bfd_boolean unresolved_reloc; 3016 3017 r_type = SPARC_ELF_R_TYPE (rel->r_info); 3018 if (r_type == R_SPARC_GNU_VTINHERIT 3019 || r_type == R_SPARC_GNU_VTENTRY) 3020 continue; 3021 3022 if (r_type < 0 || r_type >= (int) R_SPARC_max_std) 3023 { 3024 bfd_set_error (bfd_error_bad_value); 3025 return FALSE; 3026 } 3027 howto = _bfd_sparc_elf_howto_table + r_type; 3028 3029 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); 3030 h = NULL; 3031 sym = NULL; 3032 sec = NULL; 3033 unresolved_reloc = FALSE; 3034 if (r_symndx < symtab_hdr->sh_info) 3035 { 3036 sym = local_syms + r_symndx; 3037 sec = local_sections[r_symndx]; 3038 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 3039 3040 if (!bfd_link_relocatable (info) 3041 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) 3042 { 3043 /* Relocate against local STT_GNU_IFUNC symbol. */ 3044 h = elf_sparc_get_local_sym_hash (htab, input_bfd, 3045 rel, FALSE); 3046 if (h == NULL) 3047 abort (); 3048 3049 /* Set STT_GNU_IFUNC symbol value. */ 3050 h->root.u.def.value = sym->st_value; 3051 h->root.u.def.section = sec; 3052 } 3053 } 3054 else 3055 { 3056 bfd_boolean warned, ignored; 3057 3058 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3059 r_symndx, symtab_hdr, sym_hashes, 3060 h, sec, relocation, 3061 unresolved_reloc, warned, ignored); 3062 if (warned) 3063 { 3064 /* To avoid generating warning messages about truncated 3065 relocations, set the relocation's address to be the same as 3066 the start of this section. */ 3067 if (input_section->output_section != NULL) 3068 relocation = input_section->output_section->vma; 3069 else 3070 relocation = 0; 3071 } 3072 } 3073 3074 if (sec != NULL && discarded_section (sec)) 3075 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3076 rel, 1, relend, howto, 0, contents); 3077 3078 if (bfd_link_relocatable (info)) 3079 continue; 3080 3081 if (h != NULL 3082 && h->type == STT_GNU_IFUNC 3083 && h->def_regular) 3084 { 3085 asection *plt_sec; 3086 const char *name; 3087 3088 if ((input_section->flags & SEC_ALLOC) == 0 3089 || h->plt.offset == (bfd_vma) -1) 3090 abort (); 3091 3092 plt_sec = htab->elf.splt; 3093 if (! plt_sec) 3094 plt_sec =htab->elf.iplt; 3095 3096 switch (r_type) 3097 { 3098 case R_SPARC_GOTDATA_OP: 3099 continue; 3100 3101 case R_SPARC_GOTDATA_OP_HIX22: 3102 case R_SPARC_GOTDATA_OP_LOX10: 3103 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22 3104 ? R_SPARC_GOT22 3105 : R_SPARC_GOT10); 3106 howto = _bfd_sparc_elf_howto_table + r_type; 3107 /* Fall through. */ 3108 3109 case R_SPARC_GOT10: 3110 case R_SPARC_GOT13: 3111 case R_SPARC_GOT22: 3112 if (htab->elf.sgot == NULL) 3113 abort (); 3114 off = h->got.offset; 3115 if (off == (bfd_vma) -1) 3116 abort(); 3117 relocation = htab->elf.sgot->output_offset + off - got_base; 3118 goto do_relocation; 3119 3120 case R_SPARC_WPLT30: 3121 case R_SPARC_WDISP30: 3122 relocation = (plt_sec->output_section->vma 3123 + plt_sec->output_offset + h->plt.offset); 3124 goto do_relocation; 3125 3126 case R_SPARC_32: 3127 case R_SPARC_64: 3128 if (bfd_link_pic (info) && h->non_got_ref) 3129 { 3130 Elf_Internal_Rela outrel; 3131 bfd_vma offset; 3132 3133 offset = _bfd_elf_section_offset (output_bfd, info, 3134 input_section, 3135 rel->r_offset); 3136 if (offset == (bfd_vma) -1 3137 || offset == (bfd_vma) -2) 3138 abort(); 3139 3140 outrel.r_offset = (input_section->output_section->vma 3141 + input_section->output_offset 3142 + offset); 3143 3144 if (h->dynindx == -1 3145 || h->forced_local 3146 || bfd_link_executable (info)) 3147 { 3148 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 3149 0, R_SPARC_IRELATIVE); 3150 outrel.r_addend = relocation + rel->r_addend; 3151 } 3152 else 3153 { 3154 if (h->dynindx == -1) 3155 abort(); 3156 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3157 outrel.r_addend = rel->r_addend; 3158 } 3159 3160 sparc_elf_append_rela (output_bfd, sreloc, &outrel); 3161 continue; 3162 } 3163 3164 relocation = (plt_sec->output_section->vma 3165 + plt_sec->output_offset + h->plt.offset); 3166 goto do_relocation; 3167 3168 case R_SPARC_HI22: 3169 case R_SPARC_LO10: 3170 /* We should only see such relocs in static links. */ 3171 if (bfd_link_pic (info)) 3172 abort(); 3173 relocation = (plt_sec->output_section->vma 3174 + plt_sec->output_offset + h->plt.offset); 3175 goto do_relocation; 3176 3177 default: 3178 if (h->root.root.string) 3179 name = h->root.root.string; 3180 else 3181 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 3182 NULL); 3183 _bfd_error_handler 3184 /* xgettext:c-format */ 3185 (_("%B: relocation %s against STT_GNU_IFUNC " 3186 "symbol `%s' isn't handled by %s"), input_bfd, 3187 _bfd_sparc_elf_howto_table[r_type].name, 3188 name, __FUNCTION__); 3189 bfd_set_error (bfd_error_bad_value); 3190 return FALSE; 3191 } 3192 } 3193 3194 switch (r_type) 3195 { 3196 case R_SPARC_GOTDATA_OP_HIX22: 3197 case R_SPARC_GOTDATA_OP_LOX10: 3198 if (gdop_relative_offset_ok (info, h, relocation)) 3199 { 3200 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22 3201 ? R_SPARC_GOTDATA_HIX22 3202 : R_SPARC_GOTDATA_LOX10); 3203 howto = _bfd_sparc_elf_howto_table + r_type; 3204 } 3205 break; 3206 3207 case R_SPARC_GOTDATA_OP: 3208 if (gdop_relative_offset_ok (info, h, relocation)) 3209 { 3210 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3211 3212 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */ 3213 relocation = 0x80000000 | (insn & 0x3e07c01f); 3214 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 3215 } 3216 continue; 3217 } 3218 3219 switch (r_type) 3220 { 3221 case R_SPARC_GOTDATA_HIX22: 3222 case R_SPARC_GOTDATA_LOX10: 3223 relocation = gdopoff (info, relocation); 3224 break; 3225 3226 case R_SPARC_GOTDATA_OP_HIX22: 3227 case R_SPARC_GOTDATA_OP_LOX10: 3228 case R_SPARC_GOT10: 3229 case R_SPARC_GOT13: 3230 case R_SPARC_GOT22: 3231 /* Relocation is to the entry for this symbol in the global 3232 offset table. */ 3233 if (htab->elf.sgot == NULL) 3234 abort (); 3235 3236 if (h != NULL) 3237 { 3238 bfd_boolean dyn; 3239 3240 off = h->got.offset; 3241 BFD_ASSERT (off != (bfd_vma) -1); 3242 dyn = elf_hash_table (info)->dynamic_sections_created; 3243 3244 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3245 bfd_link_pic (info), 3246 h) 3247 || (bfd_link_pic (info) 3248 && SYMBOL_REFERENCES_LOCAL (info, h))) 3249 { 3250 /* This is actually a static link, or it is a 3251 -Bsymbolic link and the symbol is defined 3252 locally, or the symbol was forced to be local 3253 because of a version file. We must initialize 3254 this entry in the global offset table. Since the 3255 offset must always be a multiple of 8 for 64-bit 3256 and 4 for 32-bit, we use the least significant bit 3257 to record whether we have initialized it already. 3258 3259 When doing a dynamic link, we create a .rela.got 3260 relocation entry to initialize the value. This 3261 is done in the finish_dynamic_symbol routine. */ 3262 if ((off & 1) != 0) 3263 off &= ~1; 3264 else 3265 { 3266 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation, 3267 htab->elf.sgot->contents + off); 3268 h->got.offset |= 1; 3269 } 3270 } 3271 else 3272 unresolved_reloc = FALSE; 3273 } 3274 else 3275 { 3276 BFD_ASSERT (local_got_offsets != NULL 3277 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3278 3279 off = local_got_offsets[r_symndx]; 3280 3281 /* The offset must always be a multiple of 8 on 64-bit and 3282 4 on 32-bit. We use the least significant bit to record 3283 whether we have already processed this entry. */ 3284 if ((off & 1) != 0) 3285 off &= ~1; 3286 else 3287 { 3288 3289 if (bfd_link_pic (info)) 3290 { 3291 asection *s; 3292 Elf_Internal_Rela outrel; 3293 3294 /* We need to generate a R_SPARC_RELATIVE reloc 3295 for the dynamic linker. */ 3296 s = htab->elf.srelgot; 3297 BFD_ASSERT (s != NULL); 3298 3299 outrel.r_offset = (htab->elf.sgot->output_section->vma 3300 + htab->elf.sgot->output_offset 3301 + off); 3302 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 3303 0, R_SPARC_RELATIVE); 3304 outrel.r_addend = relocation; 3305 relocation = 0; 3306 sparc_elf_append_rela (output_bfd, s, &outrel); 3307 } 3308 3309 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation, 3310 htab->elf.sgot->contents + off); 3311 local_got_offsets[r_symndx] |= 1; 3312 } 3313 } 3314 relocation = htab->elf.sgot->output_offset + off - got_base; 3315 break; 3316 3317 case R_SPARC_PLT32: 3318 case R_SPARC_PLT64: 3319 if (h == NULL || h->plt.offset == (bfd_vma) -1) 3320 { 3321 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64; 3322 goto r_sparc_plt32; 3323 } 3324 /* Fall through. */ 3325 3326 case R_SPARC_WPLT30: 3327 case R_SPARC_HIPLT22: 3328 case R_SPARC_LOPLT10: 3329 case R_SPARC_PCPLT32: 3330 case R_SPARC_PCPLT22: 3331 case R_SPARC_PCPLT10: 3332 r_sparc_wplt30: 3333 /* Relocation is to the entry for this symbol in the 3334 procedure linkage table. */ 3335 3336 if (! ABI_64_P (output_bfd)) 3337 { 3338 /* The Solaris native assembler will generate a WPLT30 reloc 3339 for a local symbol if you assemble a call from one 3340 section to another when using -K pic. We treat it as 3341 WDISP30. */ 3342 if (h == NULL) 3343 break; 3344 } 3345 /* PR 7027: We need similar behaviour for 64-bit binaries. */ 3346 else if (r_type == R_SPARC_WPLT30 && h == NULL) 3347 break; 3348 else 3349 { 3350 BFD_ASSERT (h != NULL); 3351 } 3352 3353 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3354 { 3355 /* We didn't make a PLT entry for this symbol. This 3356 happens when statically linking PIC code, or when 3357 using -Bsymbolic. */ 3358 break; 3359 } 3360 3361 relocation = (htab->elf.splt->output_section->vma 3362 + htab->elf.splt->output_offset 3363 + h->plt.offset); 3364 unresolved_reloc = FALSE; 3365 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) 3366 { 3367 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; 3368 is_plt = TRUE; 3369 goto r_sparc_plt32; 3370 } 3371 break; 3372 3373 case R_SPARC_PC10: 3374 case R_SPARC_PC22: 3375 case R_SPARC_PC_HH22: 3376 case R_SPARC_PC_HM10: 3377 case R_SPARC_PC_LM22: 3378 if (h != NULL 3379 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3380 break; 3381 /* Fall through. */ 3382 case R_SPARC_DISP8: 3383 case R_SPARC_DISP16: 3384 case R_SPARC_DISP32: 3385 case R_SPARC_DISP64: 3386 case R_SPARC_WDISP30: 3387 case R_SPARC_WDISP22: 3388 case R_SPARC_WDISP19: 3389 case R_SPARC_WDISP16: 3390 case R_SPARC_WDISP10: 3391 case R_SPARC_8: 3392 case R_SPARC_16: 3393 case R_SPARC_32: 3394 case R_SPARC_HI22: 3395 case R_SPARC_22: 3396 case R_SPARC_13: 3397 case R_SPARC_LO10: 3398 case R_SPARC_UA16: 3399 case R_SPARC_UA32: 3400 case R_SPARC_10: 3401 case R_SPARC_11: 3402 case R_SPARC_64: 3403 case R_SPARC_OLO10: 3404 case R_SPARC_HH22: 3405 case R_SPARC_HM10: 3406 case R_SPARC_LM22: 3407 case R_SPARC_7: 3408 case R_SPARC_5: 3409 case R_SPARC_6: 3410 case R_SPARC_HIX22: 3411 case R_SPARC_LOX10: 3412 case R_SPARC_H44: 3413 case R_SPARC_M44: 3414 case R_SPARC_L44: 3415 case R_SPARC_H34: 3416 case R_SPARC_UA64: 3417 r_sparc_plt32: 3418 if ((input_section->flags & SEC_ALLOC) == 0 3419 || is_vxworks_tls) 3420 break; 3421 3422 if ((bfd_link_pic (info) 3423 && (h == NULL 3424 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3425 || h->root.type != bfd_link_hash_undefweak) 3426 && (! howto->pc_relative 3427 || !SYMBOL_CALLS_LOCAL (info, h))) 3428 || (!bfd_link_pic (info) 3429 && h != NULL 3430 && h->dynindx != -1 3431 && !h->non_got_ref 3432 && ((h->def_dynamic 3433 && !h->def_regular) 3434 || h->root.type == bfd_link_hash_undefweak 3435 || h->root.type == bfd_link_hash_undefined))) 3436 { 3437 Elf_Internal_Rela outrel; 3438 bfd_boolean skip, relocate = FALSE; 3439 3440 /* When generating a shared object, these relocations 3441 are copied into the output file to be resolved at run 3442 time. */ 3443 3444 BFD_ASSERT (sreloc != NULL); 3445 3446 skip = FALSE; 3447 3448 outrel.r_offset = 3449 _bfd_elf_section_offset (output_bfd, info, input_section, 3450 rel->r_offset); 3451 if (outrel.r_offset == (bfd_vma) -1) 3452 skip = TRUE; 3453 else if (outrel.r_offset == (bfd_vma) -2) 3454 skip = TRUE, relocate = TRUE; 3455 outrel.r_offset += (input_section->output_section->vma 3456 + input_section->output_offset); 3457 3458 /* Optimize unaligned reloc usage now that we know where 3459 it finally resides. */ 3460 switch (r_type) 3461 { 3462 case R_SPARC_16: 3463 if (outrel.r_offset & 1) 3464 r_type = R_SPARC_UA16; 3465 break; 3466 case R_SPARC_UA16: 3467 if (!(outrel.r_offset & 1)) 3468 r_type = R_SPARC_16; 3469 break; 3470 case R_SPARC_32: 3471 if (outrel.r_offset & 3) 3472 r_type = R_SPARC_UA32; 3473 break; 3474 case R_SPARC_UA32: 3475 if (!(outrel.r_offset & 3)) 3476 r_type = R_SPARC_32; 3477 break; 3478 case R_SPARC_64: 3479 if (outrel.r_offset & 7) 3480 r_type = R_SPARC_UA64; 3481 break; 3482 case R_SPARC_UA64: 3483 if (!(outrel.r_offset & 7)) 3484 r_type = R_SPARC_64; 3485 break; 3486 case R_SPARC_DISP8: 3487 case R_SPARC_DISP16: 3488 case R_SPARC_DISP32: 3489 case R_SPARC_DISP64: 3490 /* If the symbol is not dynamic, we should not keep 3491 a dynamic relocation. But an .rela.* slot has been 3492 allocated for it, output R_SPARC_NONE. 3493 FIXME: Add code tracking needed dynamic relocs as 3494 e.g. i386 has. */ 3495 if (h->dynindx == -1) 3496 skip = TRUE, relocate = TRUE; 3497 break; 3498 } 3499 3500 if (skip) 3501 memset (&outrel, 0, sizeof outrel); 3502 /* h->dynindx may be -1 if the symbol was marked to 3503 become local. */ 3504 else if (h != NULL 3505 && h->dynindx != -1 3506 && (_bfd_sparc_elf_howto_table[r_type].pc_relative 3507 || !bfd_link_pic (info) 3508 || !SYMBOLIC_BIND (info, h) 3509 || !h->def_regular)) 3510 { 3511 BFD_ASSERT (h->dynindx != -1); 3512 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3513 outrel.r_addend = rel->r_addend; 3514 } 3515 else 3516 { 3517 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32) 3518 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64)) 3519 { 3520 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 3521 0, R_SPARC_RELATIVE); 3522 outrel.r_addend = relocation + rel->r_addend; 3523 } 3524 else 3525 { 3526 long indx; 3527 3528 outrel.r_addend = relocation + rel->r_addend; 3529 3530 if (is_plt) 3531 sec = htab->elf.splt; 3532 3533 if (bfd_is_abs_section (sec)) 3534 indx = 0; 3535 else if (sec == NULL || sec->owner == NULL) 3536 { 3537 bfd_set_error (bfd_error_bad_value); 3538 return FALSE; 3539 } 3540 else 3541 { 3542 asection *osec; 3543 3544 /* We are turning this relocation into one 3545 against a section symbol. It would be 3546 proper to subtract the symbol's value, 3547 osec->vma, from the emitted reloc addend, 3548 but ld.so expects buggy relocs. */ 3549 osec = sec->output_section; 3550 indx = elf_section_data (osec)->dynindx; 3551 3552 if (indx == 0) 3553 { 3554 osec = htab->elf.text_index_section; 3555 indx = elf_section_data (osec)->dynindx; 3556 } 3557 3558 /* FIXME: we really should be able to link non-pic 3559 shared libraries. */ 3560 if (indx == 0) 3561 { 3562 BFD_FAIL (); 3563 _bfd_error_handler 3564 (_("%B: probably compiled without -fPIC?"), 3565 input_bfd); 3566 bfd_set_error (bfd_error_bad_value); 3567 return FALSE; 3568 } 3569 } 3570 3571 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx, 3572 r_type); 3573 } 3574 } 3575 3576 sparc_elf_append_rela (output_bfd, sreloc, &outrel); 3577 3578 /* This reloc will be computed at runtime, so there's no 3579 need to do anything now. */ 3580 if (! relocate) 3581 continue; 3582 } 3583 break; 3584 3585 case R_SPARC_TLS_GD_HI22: 3586 if (! ABI_64_P (input_bfd) 3587 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd) 3588 { 3589 /* R_SPARC_REV32 used the same reloc number as 3590 R_SPARC_TLS_GD_HI22. */ 3591 r_type = R_SPARC_REV32; 3592 break; 3593 } 3594 /* Fall through */ 3595 3596 case R_SPARC_TLS_GD_LO10: 3597 case R_SPARC_TLS_IE_HI22: 3598 case R_SPARC_TLS_IE_LO10: 3599 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL); 3600 tls_type = GOT_UNKNOWN; 3601 if (h == NULL && local_got_offsets) 3602 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; 3603 else if (h != NULL) 3604 { 3605 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 3606 if (!bfd_link_pic (info) 3607 && h->dynindx == -1 3608 && tls_type == GOT_TLS_IE) 3609 switch (SPARC_ELF_R_TYPE (rel->r_info)) 3610 { 3611 case R_SPARC_TLS_GD_HI22: 3612 case R_SPARC_TLS_IE_HI22: 3613 r_type = R_SPARC_TLS_LE_HIX22; 3614 break; 3615 default: 3616 r_type = R_SPARC_TLS_LE_LOX10; 3617 break; 3618 } 3619 } 3620 if (tls_type == GOT_TLS_IE) 3621 switch (r_type) 3622 { 3623 case R_SPARC_TLS_GD_HI22: 3624 r_type = R_SPARC_TLS_IE_HI22; 3625 break; 3626 case R_SPARC_TLS_GD_LO10: 3627 r_type = R_SPARC_TLS_IE_LO10; 3628 break; 3629 } 3630 3631 if (r_type == R_SPARC_TLS_LE_HIX22) 3632 { 3633 relocation = tpoff (info, relocation); 3634 break; 3635 } 3636 if (r_type == R_SPARC_TLS_LE_LOX10) 3637 { 3638 /* Change add into xor. */ 3639 relocation = tpoff (info, relocation); 3640 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd, 3641 contents + rel->r_offset) 3642 | 0x80182000), contents + rel->r_offset); 3643 break; 3644 } 3645 3646 if (h != NULL) 3647 { 3648 off = h->got.offset; 3649 h->got.offset |= 1; 3650 } 3651 else 3652 { 3653 BFD_ASSERT (local_got_offsets != NULL); 3654 off = local_got_offsets[r_symndx]; 3655 local_got_offsets[r_symndx] |= 1; 3656 } 3657 3658 r_sparc_tlsldm: 3659 if (htab->elf.sgot == NULL) 3660 abort (); 3661 3662 if ((off & 1) != 0) 3663 off &= ~1; 3664 else 3665 { 3666 Elf_Internal_Rela outrel; 3667 int dr_type, indx; 3668 3669 if (htab->elf.srelgot == NULL) 3670 abort (); 3671 3672 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 3673 htab->elf.sgot->contents + off); 3674 outrel.r_offset = (htab->elf.sgot->output_section->vma 3675 + htab->elf.sgot->output_offset + off); 3676 indx = h && h->dynindx != -1 ? h->dynindx : 0; 3677 if (r_type == R_SPARC_TLS_IE_HI22 3678 || r_type == R_SPARC_TLS_IE_LO10) 3679 dr_type = SPARC_ELF_TPOFF_RELOC (htab); 3680 else 3681 dr_type = SPARC_ELF_DTPMOD_RELOC (htab); 3682 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0) 3683 outrel.r_addend = relocation - dtpoff_base (info); 3684 else 3685 outrel.r_addend = 0; 3686 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type); 3687 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3688 3689 if (r_type == R_SPARC_TLS_GD_HI22 3690 || r_type == R_SPARC_TLS_GD_LO10) 3691 { 3692 if (indx == 0) 3693 { 3694 BFD_ASSERT (! unresolved_reloc); 3695 SPARC_ELF_PUT_WORD (htab, output_bfd, 3696 relocation - dtpoff_base (info), 3697 (htab->elf.sgot->contents + off 3698 + SPARC_ELF_WORD_BYTES (htab))); 3699 } 3700 else 3701 { 3702 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 3703 (htab->elf.sgot->contents + off 3704 + SPARC_ELF_WORD_BYTES (htab))); 3705 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, 3706 SPARC_ELF_DTPOFF_RELOC (htab)); 3707 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab); 3708 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, 3709 &outrel); 3710 } 3711 } 3712 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab)) 3713 { 3714 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 3715 (htab->elf.sgot->contents + off 3716 + SPARC_ELF_WORD_BYTES (htab))); 3717 } 3718 } 3719 3720 if (off >= (bfd_vma) -2) 3721 abort (); 3722 3723 relocation = htab->elf.sgot->output_offset + off - got_base; 3724 unresolved_reloc = FALSE; 3725 howto = _bfd_sparc_elf_howto_table + r_type; 3726 break; 3727 3728 case R_SPARC_TLS_LDM_HI22: 3729 case R_SPARC_TLS_LDM_LO10: 3730 if (! bfd_link_pic (info)) 3731 { 3732 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 3733 continue; 3734 } 3735 off = htab->tls_ldm_got.offset; 3736 htab->tls_ldm_got.offset |= 1; 3737 goto r_sparc_tlsldm; 3738 3739 case R_SPARC_TLS_LDO_HIX22: 3740 case R_SPARC_TLS_LDO_LOX10: 3741 if (bfd_link_pic (info)) 3742 { 3743 relocation -= dtpoff_base (info); 3744 break; 3745 } 3746 3747 r_type = (r_type == R_SPARC_TLS_LDO_HIX22 3748 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10); 3749 /* Fall through. */ 3750 3751 case R_SPARC_TLS_LE_HIX22: 3752 case R_SPARC_TLS_LE_LOX10: 3753 if (bfd_link_pic (info)) 3754 { 3755 Elf_Internal_Rela outrel; 3756 bfd_boolean skip; 3757 3758 BFD_ASSERT (sreloc != NULL); 3759 skip = FALSE; 3760 outrel.r_offset = 3761 _bfd_elf_section_offset (output_bfd, info, input_section, 3762 rel->r_offset); 3763 if (outrel.r_offset == (bfd_vma) -1) 3764 skip = TRUE; 3765 else if (outrel.r_offset == (bfd_vma) -2) 3766 skip = TRUE; 3767 outrel.r_offset += (input_section->output_section->vma 3768 + input_section->output_offset); 3769 if (skip) 3770 memset (&outrel, 0, sizeof outrel); 3771 else 3772 { 3773 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type); 3774 outrel.r_addend = relocation - dtpoff_base (info) 3775 + rel->r_addend; 3776 } 3777 3778 sparc_elf_append_rela (output_bfd, sreloc, &outrel); 3779 continue; 3780 } 3781 relocation = tpoff (info, relocation); 3782 break; 3783 3784 case R_SPARC_TLS_LDM_CALL: 3785 if (! bfd_link_pic (info)) 3786 { 3787 /* mov %g0, %o0 */ 3788 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset); 3789 continue; 3790 } 3791 /* Fall through */ 3792 3793 case R_SPARC_TLS_GD_CALL: 3794 tls_type = GOT_UNKNOWN; 3795 if (h == NULL && local_got_offsets) 3796 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; 3797 else if (h != NULL) 3798 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 3799 if (! bfd_link_pic (info) 3800 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE)) 3801 { 3802 Elf_Internal_Rela *rel2; 3803 bfd_vma insn; 3804 3805 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) 3806 { 3807 /* GD -> LE */ 3808 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 3809 continue; 3810 } 3811 3812 /* GD -> IE */ 3813 if (rel + 1 < relend 3814 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD 3815 && rel[1].r_offset == rel->r_offset + 4 3816 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx 3817 && (((insn = bfd_get_32 (input_bfd, 3818 contents + rel[1].r_offset)) 3819 >> 25) & 0x1f) == 8) 3820 { 3821 /* We have 3822 call __tls_get_addr, %tgd_call(foo) 3823 add %reg1, %reg2, %o0, %tgd_add(foo) 3824 and change it into IE: 3825 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo) 3826 add %g7, %o0, %o0, %tie_add(foo). 3827 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2, 3828 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2, 3829 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */ 3830 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000), 3831 contents + rel->r_offset); 3832 bfd_put_32 (output_bfd, 0x9001c008, 3833 contents + rel->r_offset + 4); 3834 rel++; 3835 continue; 3836 } 3837 3838 /* We cannot just overwrite the delay slot instruction, 3839 as it might be what puts the %o0 argument to 3840 __tls_get_addr into place. So we have to transpose 3841 the delay slot with the add we patch in. */ 3842 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 3843 bfd_put_32 (output_bfd, insn, 3844 contents + rel->r_offset); 3845 bfd_put_32 (output_bfd, 0x9001c008, 3846 contents + rel->r_offset + 4); 3847 3848 rel2 = rel; 3849 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend, 3850 rel->r_offset + 4)) 3851 != NULL) 3852 { 3853 /* If the instruction we moved has a relocation attached to 3854 it, adjust the offset so that it will apply to the correct 3855 instruction. */ 3856 rel2->r_offset -= 4; 3857 } 3858 continue; 3859 } 3860 3861 h = (struct elf_link_hash_entry *) 3862 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3863 FALSE, TRUE); 3864 BFD_ASSERT (h != NULL); 3865 r_type = R_SPARC_WPLT30; 3866 howto = _bfd_sparc_elf_howto_table + r_type; 3867 goto r_sparc_wplt30; 3868 3869 case R_SPARC_TLS_GD_ADD: 3870 tls_type = GOT_UNKNOWN; 3871 if (h == NULL && local_got_offsets) 3872 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; 3873 else if (h != NULL) 3874 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 3875 if (! bfd_link_pic (info) || tls_type == GOT_TLS_IE) 3876 { 3877 /* add %reg1, %reg2, %reg3, %tgd_add(foo) 3878 changed into IE: 3879 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo) 3880 or LE: 3881 add %g7, %reg2, %reg3. */ 3882 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3883 if ((h != NULL && h->dynindx != -1) || bfd_link_pic (info)) 3884 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000); 3885 else 3886 relocation = (insn & ~0x7c000) | 0x1c000; 3887 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 3888 } 3889 continue; 3890 3891 case R_SPARC_TLS_LDM_ADD: 3892 if (! bfd_link_pic (info)) 3893 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 3894 continue; 3895 3896 case R_SPARC_TLS_LDO_ADD: 3897 if (! bfd_link_pic (info)) 3898 { 3899 /* Change rs1 into %g7. */ 3900 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3901 insn = (insn & ~0x7c000) | 0x1c000; 3902 bfd_put_32 (output_bfd, insn, contents + rel->r_offset); 3903 } 3904 continue; 3905 3906 case R_SPARC_TLS_IE_LD: 3907 case R_SPARC_TLS_IE_LDX: 3908 if (! bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) 3909 { 3910 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3911 int rs2 = insn & 0x1f; 3912 int rd = (insn >> 25) & 0x1f; 3913 3914 if (rs2 == rd) 3915 relocation = SPARC_NOP; 3916 else 3917 relocation = 0x80100000 | (insn & 0x3e00001f); 3918 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 3919 } 3920 continue; 3921 3922 case R_SPARC_TLS_IE_ADD: 3923 /* Totally useless relocation. */ 3924 continue; 3925 3926 case R_SPARC_TLS_DTPOFF32: 3927 case R_SPARC_TLS_DTPOFF64: 3928 relocation -= dtpoff_base (info); 3929 break; 3930 3931 default: 3932 break; 3933 } 3934 3935 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3936 because such sections are not SEC_ALLOC and thus ld.so will 3937 not process them. */ 3938 if (unresolved_reloc 3939 && !((input_section->flags & SEC_DEBUGGING) != 0 3940 && h->def_dynamic) 3941 && _bfd_elf_section_offset (output_bfd, info, input_section, 3942 rel->r_offset) != (bfd_vma) -1) 3943 _bfd_error_handler 3944 /* xgettext:c-format */ 3945 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3946 input_bfd, 3947 input_section, 3948 (long) rel->r_offset, 3949 howto->name, 3950 h->root.root.string); 3951 3952 r = bfd_reloc_continue; 3953 if (r_type == R_SPARC_OLO10) 3954 { 3955 bfd_vma x; 3956 3957 if (! ABI_64_P (output_bfd)) 3958 abort (); 3959 3960 relocation += rel->r_addend; 3961 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); 3962 3963 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3964 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); 3965 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 3966 3967 r = bfd_check_overflow (howto->complain_on_overflow, 3968 howto->bitsize, howto->rightshift, 3969 bfd_arch_bits_per_address (input_bfd), 3970 relocation); 3971 } 3972 else if (r_type == R_SPARC_WDISP16) 3973 { 3974 bfd_vma x; 3975 3976 relocation += rel->r_addend; 3977 relocation -= (input_section->output_section->vma 3978 + input_section->output_offset); 3979 relocation -= rel->r_offset; 3980 3981 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3982 x |= ((((relocation >> 2) & 0xc000) << 6) 3983 | ((relocation >> 2) & 0x3fff)); 3984 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 3985 3986 r = bfd_check_overflow (howto->complain_on_overflow, 3987 howto->bitsize, howto->rightshift, 3988 bfd_arch_bits_per_address (input_bfd), 3989 relocation); 3990 } 3991 else if (r_type == R_SPARC_WDISP10) 3992 { 3993 bfd_vma x; 3994 3995 relocation += rel->r_addend; 3996 relocation -= (input_section->output_section->vma 3997 + input_section->output_offset); 3998 relocation -= rel->r_offset; 3999 4000 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4001 x |= ((((relocation >> 2) & 0x300) << 11) 4002 | (((relocation >> 2) & 0xff) << 5)); 4003 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4004 4005 r = bfd_check_overflow (howto->complain_on_overflow, 4006 howto->bitsize, howto->rightshift, 4007 bfd_arch_bits_per_address (input_bfd), 4008 relocation); 4009 } 4010 else if (r_type == R_SPARC_REV32) 4011 { 4012 bfd_vma x; 4013 4014 relocation = relocation + rel->r_addend; 4015 4016 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4017 x = x + relocation; 4018 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); 4019 r = bfd_reloc_ok; 4020 } 4021 else if (r_type == R_SPARC_TLS_LDO_HIX22 4022 || r_type == R_SPARC_TLS_LE_HIX22) 4023 { 4024 bfd_vma x; 4025 4026 relocation += rel->r_addend; 4027 if (r_type == R_SPARC_TLS_LE_HIX22) 4028 relocation ^= MINUS_ONE; 4029 4030 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4031 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 4032 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4033 r = bfd_reloc_ok; 4034 } 4035 else if (r_type == R_SPARC_TLS_LDO_LOX10 4036 || r_type == R_SPARC_TLS_LE_LOX10) 4037 { 4038 bfd_vma x; 4039 4040 relocation += rel->r_addend; 4041 relocation &= 0x3ff; 4042 if (r_type == R_SPARC_TLS_LE_LOX10) 4043 relocation |= 0x1c00; 4044 4045 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4046 x = (x & ~(bfd_vma) 0x1fff) | relocation; 4047 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4048 4049 r = bfd_reloc_ok; 4050 } 4051 else if (r_type == R_SPARC_HIX22 4052 || r_type == R_SPARC_GOTDATA_HIX22 4053 || r_type == R_SPARC_GOTDATA_OP_HIX22) 4054 { 4055 bfd_vma x; 4056 4057 relocation += rel->r_addend; 4058 if (r_type == R_SPARC_HIX22 4059 || (bfd_signed_vma) relocation < 0) 4060 relocation = relocation ^ MINUS_ONE; 4061 4062 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4063 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 4064 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4065 4066 r = bfd_check_overflow (howto->complain_on_overflow, 4067 howto->bitsize, howto->rightshift, 4068 bfd_arch_bits_per_address (input_bfd), 4069 relocation); 4070 } 4071 else if (r_type == R_SPARC_LOX10 4072 || r_type == R_SPARC_GOTDATA_LOX10 4073 || r_type == R_SPARC_GOTDATA_OP_LOX10) 4074 { 4075 bfd_vma x; 4076 4077 relocation += rel->r_addend; 4078 if (r_type == R_SPARC_LOX10 4079 || (bfd_signed_vma) relocation < 0) 4080 relocation = (relocation & 0x3ff) | 0x1c00; 4081 else 4082 relocation = (relocation & 0x3ff); 4083 4084 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4085 x = (x & ~(bfd_vma) 0x1fff) | relocation; 4086 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4087 4088 r = bfd_reloc_ok; 4089 } 4090 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) 4091 && sec_do_relax (input_section) 4092 && rel->r_offset + 4 < input_section->size) 4093 { 4094#define G0 0 4095#define O7 15 4096#define XCC (2 << 20) 4097#define COND(x) (((x)&0xf)<<25) 4098#define CONDA COND(0x8) 4099#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) 4100#define INSN_BA (F2(0,2) | CONDA) 4101#define INSN_OR F3(2, 0x2, 0) 4102#define INSN_NOP F2(0,4) 4103 4104 bfd_vma x, y; 4105 4106 /* If the instruction is a call with either: 4107 restore 4108 arithmetic instruction with rd == %o7 4109 where rs1 != %o7 and rs2 if it is register != %o7 4110 then we can optimize if the call destination is near 4111 by changing the call into a branch always. */ 4112 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4113 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 4114 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) 4115 { 4116 if (((y & OP3(~0)) == OP3(0x3d) /* restore */ 4117 || ((y & OP3(0x28)) == 0 /* arithmetic */ 4118 && (y & RD(~0)) == RD(O7))) 4119 && (y & RS1(~0)) != RS1(O7) 4120 && ((y & F3I(~0)) 4121 || (y & RS2(~0)) != RS2(O7))) 4122 { 4123 bfd_vma reloc; 4124 4125 reloc = relocation + rel->r_addend - rel->r_offset; 4126 reloc -= (input_section->output_section->vma 4127 + input_section->output_offset); 4128 4129 /* Ensure the branch fits into simm22. */ 4130 if ((reloc & 3) == 0 4131 && ((reloc & ~(bfd_vma)0x7fffff) == 0 4132 || ((reloc | 0x7fffff) == ~(bfd_vma)0))) 4133 { 4134 reloc >>= 2; 4135 4136 /* Check whether it fits into simm19. */ 4137 if (((reloc & 0x3c0000) == 0 4138 || (reloc & 0x3c0000) == 0x3c0000) 4139 && (ABI_64_P (output_bfd) 4140 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) 4141 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ 4142 else 4143 x = INSN_BA | (reloc & 0x3fffff); /* ba */ 4144 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4145 r = bfd_reloc_ok; 4146 if (rel->r_offset >= 4 4147 && (y & (0xffffffff ^ RS1(~0))) 4148 == (INSN_OR | RD(O7) | RS2(G0))) 4149 { 4150 bfd_vma z; 4151 unsigned int reg; 4152 4153 z = bfd_get_32 (input_bfd, 4154 contents + rel->r_offset - 4); 4155 if ((z & (0xffffffff ^ RD(~0))) 4156 != (INSN_OR | RS1(O7) | RS2(G0))) 4157 continue; 4158 4159 /* The sequence was 4160 or %o7, %g0, %rN 4161 call foo 4162 or %rN, %g0, %o7 4163 4164 If call foo was replaced with ba, replace 4165 or %rN, %g0, %o7 with nop. */ 4166 4167 reg = (y & RS1(~0)) >> 14; 4168 if (reg != ((z & RD(~0)) >> 25) 4169 || reg == G0 || reg == O7) 4170 continue; 4171 4172 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, 4173 contents + rel->r_offset + 4); 4174 } 4175 4176 } 4177 } 4178 } 4179 } 4180 4181 if (r == bfd_reloc_continue) 4182 { 4183do_relocation: 4184 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 4185 contents, rel->r_offset, 4186 relocation, rel->r_addend); 4187 } 4188 if (r != bfd_reloc_ok) 4189 { 4190 switch (r) 4191 { 4192 default: 4193 case bfd_reloc_outofrange: 4194 abort (); 4195 case bfd_reloc_overflow: 4196 { 4197 const char *name; 4198 4199 /* The Solaris native linker silently disregards overflows. 4200 We don't, but this breaks stabs debugging info, whose 4201 relocations are only 32-bits wide. Ignore overflows in 4202 this case and also for discarded entries. */ 4203 if ((r_type == R_SPARC_32 4204 || r_type == R_SPARC_UA32 4205 || r_type == R_SPARC_DISP32) 4206 && (((input_section->flags & SEC_DEBUGGING) != 0 4207 && strcmp (bfd_section_name (input_bfd, 4208 input_section), 4209 ".stab") == 0) 4210 || _bfd_elf_section_offset (output_bfd, info, 4211 input_section, 4212 rel->r_offset) 4213 == (bfd_vma)-1)) 4214 break; 4215 4216 if (h != NULL) 4217 { 4218 /* Assume this is a call protected by other code that 4219 detect the symbol is undefined. If this is the case, 4220 we can safely ignore the overflow. If not, the 4221 program is hosed anyway, and a little warning isn't 4222 going to help. */ 4223 if (h->root.type == bfd_link_hash_undefweak 4224 && howto->pc_relative) 4225 break; 4226 4227 name = NULL; 4228 } 4229 else 4230 { 4231 name = bfd_elf_string_from_elf_section (input_bfd, 4232 symtab_hdr->sh_link, 4233 sym->st_name); 4234 if (name == NULL) 4235 return FALSE; 4236 if (*name == '\0') 4237 name = bfd_section_name (input_bfd, sec); 4238 } 4239 (*info->callbacks->reloc_overflow) 4240 (info, (h ? &h->root : NULL), name, howto->name, 4241 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4242 } 4243 break; 4244 } 4245 } 4246 } 4247 4248 return TRUE; 4249} 4250 4251/* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry 4252 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET 4253 is the offset of the associated .got.plt entry from 4254 _GLOBAL_OFFSET_TABLE_. */ 4255 4256static void 4257sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info, 4258 bfd_vma plt_offset, bfd_vma plt_index, 4259 bfd_vma got_offset) 4260{ 4261 bfd_vma got_base; 4262 const bfd_vma *plt_entry; 4263 struct _bfd_sparc_elf_link_hash_table *htab; 4264 bfd_byte *loc; 4265 Elf_Internal_Rela rela; 4266 4267 htab = _bfd_sparc_elf_hash_table (info); 4268 BFD_ASSERT (htab != NULL); 4269 4270 if (bfd_link_pic (info)) 4271 { 4272 plt_entry = sparc_vxworks_shared_plt_entry; 4273 got_base = 0; 4274 } 4275 else 4276 { 4277 plt_entry = sparc_vxworks_exec_plt_entry; 4278 got_base = (htab->elf.hgot->root.u.def.value 4279 + htab->elf.hgot->root.u.def.section->output_offset 4280 + htab->elf.hgot->root.u.def.section->output_section->vma); 4281 } 4282 4283 /* Fill in the entry in the procedure linkage table. */ 4284 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10), 4285 htab->elf.splt->contents + plt_offset); 4286 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff), 4287 htab->elf.splt->contents + plt_offset + 4); 4288 bfd_put_32 (output_bfd, plt_entry[2], 4289 htab->elf.splt->contents + plt_offset + 8); 4290 bfd_put_32 (output_bfd, plt_entry[3], 4291 htab->elf.splt->contents + plt_offset + 12); 4292 bfd_put_32 (output_bfd, plt_entry[4], 4293 htab->elf.splt->contents + plt_offset + 16); 4294 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10), 4295 htab->elf.splt->contents + plt_offset + 20); 4296 /* PC-relative displacement for a branch to the start of 4297 the PLT section. */ 4298 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2) 4299 & 0x003fffff), 4300 htab->elf.splt->contents + plt_offset + 24); 4301 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff), 4302 htab->elf.splt->contents + plt_offset + 28); 4303 4304 /* Fill in the .got.plt entry, pointing initially at the 4305 second half of the PLT entry. */ 4306 BFD_ASSERT (htab->elf.sgotplt != NULL); 4307 bfd_put_32 (output_bfd, 4308 htab->elf.splt->output_section->vma 4309 + htab->elf.splt->output_offset 4310 + plt_offset + 20, 4311 htab->elf.sgotplt->contents + got_offset); 4312 4313 /* Add relocations to .rela.plt.unloaded. */ 4314 if (!bfd_link_pic (info)) 4315 { 4316 loc = (htab->srelplt2->contents 4317 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela)); 4318 4319 /* Relocate the initial sethi. */ 4320 rela.r_offset = (htab->elf.splt->output_section->vma 4321 + htab->elf.splt->output_offset 4322 + plt_offset); 4323 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); 4324 rela.r_addend = got_offset; 4325 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4326 loc += sizeof (Elf32_External_Rela); 4327 4328 /* Likewise the following or. */ 4329 rela.r_offset += 4; 4330 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); 4331 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4332 loc += sizeof (Elf32_External_Rela); 4333 4334 /* Relocate the .got.plt entry. */ 4335 rela.r_offset = (htab->elf.sgotplt->output_section->vma 4336 + htab->elf.sgotplt->output_offset 4337 + got_offset); 4338 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32); 4339 rela.r_addend = plt_offset + 20; 4340 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4341 } 4342} 4343 4344/* Finish up dynamic symbol handling. We set the contents of various 4345 dynamic sections here. */ 4346 4347bfd_boolean 4348_bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd, 4349 struct bfd_link_info *info, 4350 struct elf_link_hash_entry *h, 4351 Elf_Internal_Sym *sym) 4352{ 4353 struct _bfd_sparc_elf_link_hash_table *htab; 4354 const struct elf_backend_data *bed; 4355 4356 htab = _bfd_sparc_elf_hash_table (info); 4357 BFD_ASSERT (htab != NULL); 4358 bed = get_elf_backend_data (output_bfd); 4359 4360 if (h->plt.offset != (bfd_vma) -1) 4361 { 4362 asection *splt; 4363 asection *srela; 4364 Elf_Internal_Rela rela; 4365 bfd_byte *loc; 4366 bfd_vma r_offset, got_offset; 4367 int rela_index; 4368 4369 /* When building a static executable, use .iplt and 4370 .rela.iplt sections for STT_GNU_IFUNC symbols. */ 4371 if (htab->elf.splt != NULL) 4372 { 4373 splt = htab->elf.splt; 4374 srela = htab->elf.srelplt; 4375 } 4376 else 4377 { 4378 splt = htab->elf.iplt; 4379 srela = htab->elf.irelplt; 4380 } 4381 4382 if (splt == NULL || srela == NULL) 4383 abort (); 4384 4385 /* Fill in the entry in the .rela.plt section. */ 4386 if (htab->is_vxworks) 4387 { 4388 /* Work out the index of this PLT entry. */ 4389 rela_index = ((h->plt.offset - htab->plt_header_size) 4390 / htab->plt_entry_size); 4391 4392 /* Calculate the offset of the associated .got.plt entry. 4393 The first three entries are reserved. */ 4394 got_offset = (rela_index + 3) * 4; 4395 4396 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset, 4397 rela_index, got_offset); 4398 4399 4400 /* On VxWorks, the relocation points to the .got.plt entry, 4401 not the .plt entry. */ 4402 rela.r_offset = (htab->elf.sgotplt->output_section->vma 4403 + htab->elf.sgotplt->output_offset 4404 + got_offset); 4405 rela.r_addend = 0; 4406 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, 4407 R_SPARC_JMP_SLOT); 4408 } 4409 else 4410 { 4411 bfd_boolean ifunc = FALSE; 4412 4413 /* Fill in the entry in the procedure linkage table. */ 4414 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt, 4415 h->plt.offset, splt->size, 4416 &r_offset); 4417 4418 if (h == NULL 4419 || h->dynindx == -1 4420 || ((bfd_link_executable (info) 4421 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 4422 && h->def_regular 4423 && h->type == STT_GNU_IFUNC)) 4424 { 4425 ifunc = TRUE; 4426 BFD_ASSERT (h == NULL 4427 || (h->type == STT_GNU_IFUNC 4428 && h->def_regular 4429 && (h->root.type == bfd_link_hash_defined 4430 || h->root.type == bfd_link_hash_defweak))); 4431 } 4432 4433 rela.r_offset = r_offset 4434 + (splt->output_section->vma + splt->output_offset); 4435 if (ABI_64_P (output_bfd) 4436 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) 4437 { 4438 if (ifunc) 4439 { 4440 rela.r_addend = (h->root.u.def.section->output_section->vma 4441 + h->root.u.def.section->output_offset 4442 + h->root.u.def.value); 4443 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, 4444 R_SPARC_IRELATIVE); 4445 } 4446 else 4447 { 4448 rela.r_addend = (-(h->plt.offset + 4) 4449 - splt->output_section->vma 4450 - splt->output_offset); 4451 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, 4452 R_SPARC_JMP_SLOT); 4453 } 4454 } 4455 else 4456 { 4457 if (ifunc) 4458 { 4459 rela.r_addend = (h->root.u.def.section->output_section->vma 4460 + h->root.u.def.section->output_offset 4461 + h->root.u.def.value); 4462 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, 4463 R_SPARC_JMP_IREL); 4464 } 4465 else 4466 { 4467 rela.r_addend = 0; 4468 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, 4469 R_SPARC_JMP_SLOT); 4470 } 4471 } 4472 } 4473 4474 /* Adjust for the first 4 reserved elements in the .plt section 4475 when setting the offset in the .rela.plt section. 4476 Sun forgot to read their own ABI and copied elf32-sparc behaviour, 4477 thus .plt[4] has corresponding .rela.plt[0] and so on. */ 4478 4479 loc = srela->contents; 4480 loc += rela_index * bed->s->sizeof_rela; 4481 bed->s->swap_reloca_out (output_bfd, &rela, loc); 4482 4483 if (!h->def_regular) 4484 { 4485 /* Mark the symbol as undefined, rather than as defined in 4486 the .plt section. Leave the value alone. */ 4487 sym->st_shndx = SHN_UNDEF; 4488 /* If the symbol is weak, we do need to clear the value. 4489 Otherwise, the PLT entry would provide a definition for 4490 the symbol even if the symbol wasn't defined anywhere, 4491 and so the symbol would never be NULL. */ 4492 if (!h->ref_regular_nonweak) 4493 sym->st_value = 0; 4494 } 4495 } 4496 4497 if (h->got.offset != (bfd_vma) -1 4498 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD 4499 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 4500 { 4501 asection *sgot; 4502 asection *srela; 4503 Elf_Internal_Rela rela; 4504 4505 /* This symbol has an entry in the GOT. Set it up. */ 4506 4507 sgot = htab->elf.sgot; 4508 srela = htab->elf.srelgot; 4509 BFD_ASSERT (sgot != NULL && srela != NULL); 4510 4511 rela.r_offset = (sgot->output_section->vma 4512 + sgot->output_offset 4513 + (h->got.offset &~ (bfd_vma) 1)); 4514 4515 /* If this is a -Bsymbolic link, and the symbol is defined 4516 locally, we just want to emit a RELATIVE reloc. Likewise if 4517 the symbol was forced to be local because of a version file. 4518 The entry in the global offset table will already have been 4519 initialized in the relocate_section function. */ 4520 if (! bfd_link_pic (info) 4521 && h->type == STT_GNU_IFUNC 4522 && h->def_regular) 4523 { 4524 asection *plt; 4525 4526 /* We load the GOT entry with the PLT entry. */ 4527 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; 4528 SPARC_ELF_PUT_WORD (htab, output_bfd, 4529 (plt->output_section->vma 4530 + plt->output_offset + h->plt.offset), 4531 htab->elf.sgot->contents 4532 + (h->got.offset & ~(bfd_vma) 1)); 4533 return TRUE; 4534 } 4535 else if (bfd_link_pic (info) 4536 && SYMBOL_REFERENCES_LOCAL (info, h)) 4537 { 4538 asection *sec = h->root.u.def.section; 4539 if (h->type == STT_GNU_IFUNC) 4540 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE); 4541 else 4542 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE); 4543 rela.r_addend = (h->root.u.def.value 4544 + sec->output_section->vma 4545 + sec->output_offset); 4546 } 4547 else 4548 { 4549 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT); 4550 rela.r_addend = 0; 4551 } 4552 4553 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 4554 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4555 sparc_elf_append_rela (output_bfd, srela, &rela); 4556 } 4557 4558 if (h->needs_copy) 4559 { 4560 asection *s; 4561 Elf_Internal_Rela rela; 4562 4563 /* This symbols needs a copy reloc. Set it up. */ 4564 BFD_ASSERT (h->dynindx != -1); 4565 4566 rela.r_offset = (h->root.u.def.value 4567 + h->root.u.def.section->output_section->vma 4568 + h->root.u.def.section->output_offset); 4569 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY); 4570 rela.r_addend = 0; 4571 if (h->root.u.def.section == htab->elf.sdynrelro) 4572 s = htab->elf.sreldynrelro; 4573 else 4574 s = htab->elf.srelbss; 4575 sparc_elf_append_rela (output_bfd, s, &rela); 4576 } 4577 4578 /* Mark some specially defined symbols as absolute. On VxWorks, 4579 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the 4580 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */ 4581 if (sym != NULL 4582 && (h == htab->elf.hdynamic 4583 || (!htab->is_vxworks 4584 && (h == htab->elf.hgot || h == htab->elf.hplt)))) 4585 sym->st_shndx = SHN_ABS; 4586 4587 return TRUE; 4588} 4589 4590/* Finish up the dynamic sections. */ 4591 4592static bfd_boolean 4593sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4594 bfd *dynobj, asection *sdyn, 4595 asection *splt ATTRIBUTE_UNUSED) 4596{ 4597 struct _bfd_sparc_elf_link_hash_table *htab; 4598 const struct elf_backend_data *bed; 4599 bfd_byte *dyncon, *dynconend; 4600 size_t dynsize; 4601 int stt_regidx = -1; 4602 bfd_boolean abi_64_p; 4603 4604 htab = _bfd_sparc_elf_hash_table (info); 4605 BFD_ASSERT (htab != NULL); 4606 bed = get_elf_backend_data (output_bfd); 4607 dynsize = bed->s->sizeof_dyn; 4608 dynconend = sdyn->contents + sdyn->size; 4609 abi_64_p = ABI_64_P (output_bfd); 4610 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4611 { 4612 Elf_Internal_Dyn dyn; 4613 bfd_boolean size; 4614 4615 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4616 4617 if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT) 4618 { 4619 /* On VxWorks, DT_PLTGOT should point to the start of the GOT, 4620 not to the start of the PLT. */ 4621 if (htab->elf.sgotplt) 4622 { 4623 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma 4624 + htab->elf.sgotplt->output_offset); 4625 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4626 } 4627 } 4628 else if (htab->is_vxworks 4629 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) 4630 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4631 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER) 4632 { 4633 if (stt_regidx == -1) 4634 { 4635 stt_regidx = 4636 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); 4637 if (stt_regidx == -1) 4638 return FALSE; 4639 } 4640 dyn.d_un.d_val = stt_regidx++; 4641 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4642 } 4643 else 4644 { 4645 asection *s; 4646 4647 switch (dyn.d_tag) 4648 { 4649 case DT_PLTGOT: 4650 s = htab->elf.splt; 4651 size = FALSE; 4652 break; 4653 case DT_PLTRELSZ: 4654 s = htab->elf.srelplt; 4655 size = TRUE; 4656 break; 4657 case DT_JMPREL: 4658 s = htab->elf.srelplt; 4659 size = FALSE; 4660 break; 4661 default: 4662 continue; 4663 } 4664 4665 if (s == NULL) 4666 dyn.d_un.d_val = 0; 4667 else 4668 { 4669 if (!size) 4670 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4671 else 4672 dyn.d_un.d_val = s->size; 4673 } 4674 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4675 } 4676 } 4677 return TRUE; 4678} 4679 4680/* Install the first PLT entry in a VxWorks executable and make sure that 4681 .rela.plt.unloaded relocations have the correct symbol indexes. */ 4682 4683static void 4684sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) 4685{ 4686 struct _bfd_sparc_elf_link_hash_table *htab; 4687 Elf_Internal_Rela rela; 4688 bfd_vma got_base; 4689 bfd_byte *loc; 4690 4691 htab = _bfd_sparc_elf_hash_table (info); 4692 BFD_ASSERT (htab != NULL); 4693 4694 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */ 4695 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma 4696 + htab->elf.hgot->root.u.def.section->output_offset 4697 + htab->elf.hgot->root.u.def.value); 4698 4699 /* Install the initial PLT entry. */ 4700 bfd_put_32 (output_bfd, 4701 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10), 4702 htab->elf.splt->contents); 4703 bfd_put_32 (output_bfd, 4704 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff), 4705 htab->elf.splt->contents + 4); 4706 bfd_put_32 (output_bfd, 4707 sparc_vxworks_exec_plt0_entry[2], 4708 htab->elf.splt->contents + 8); 4709 bfd_put_32 (output_bfd, 4710 sparc_vxworks_exec_plt0_entry[3], 4711 htab->elf.splt->contents + 12); 4712 bfd_put_32 (output_bfd, 4713 sparc_vxworks_exec_plt0_entry[4], 4714 htab->elf.splt->contents + 16); 4715 4716 loc = htab->srelplt2->contents; 4717 4718 /* Add an unloaded relocation for the initial entry's "sethi". */ 4719 rela.r_offset = (htab->elf.splt->output_section->vma 4720 + htab->elf.splt->output_offset); 4721 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); 4722 rela.r_addend = 8; 4723 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4724 loc += sizeof (Elf32_External_Rela); 4725 4726 /* Likewise the following "or". */ 4727 rela.r_offset += 4; 4728 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); 4729 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4730 loc += sizeof (Elf32_External_Rela); 4731 4732 /* Fix up the remaining .rela.plt.unloaded relocations. They may have 4733 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order 4734 in which symbols were output. */ 4735 while (loc < htab->srelplt2->contents + htab->srelplt2->size) 4736 { 4737 Elf_Internal_Rela rel; 4738 4739 /* The entry's initial "sethi" (against _G_O_T_). */ 4740 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); 4741 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); 4742 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); 4743 loc += sizeof (Elf32_External_Rela); 4744 4745 /* The following "or" (also against _G_O_T_). */ 4746 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); 4747 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); 4748 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); 4749 loc += sizeof (Elf32_External_Rela); 4750 4751 /* The .got.plt entry (against _P_L_T_). */ 4752 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); 4753 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32); 4754 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); 4755 loc += sizeof (Elf32_External_Rela); 4756 } 4757} 4758 4759/* Install the first PLT entry in a VxWorks shared object. */ 4760 4761static void 4762sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) 4763{ 4764 struct _bfd_sparc_elf_link_hash_table *htab; 4765 unsigned int i; 4766 4767 htab = _bfd_sparc_elf_hash_table (info); 4768 BFD_ASSERT (htab != NULL); 4769 4770 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++) 4771 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i], 4772 htab->elf.splt->contents + i * 4); 4773} 4774 4775/* Finish up local dynamic symbol handling. We set the contents of 4776 various dynamic sections here. */ 4777 4778static bfd_boolean 4779finish_local_dynamic_symbol (void **slot, void *inf) 4780{ 4781 struct elf_link_hash_entry *h 4782 = (struct elf_link_hash_entry *) *slot; 4783 struct bfd_link_info *info 4784 = (struct bfd_link_info *) inf; 4785 4786 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info, 4787 h, NULL); 4788} 4789 4790bfd_boolean 4791_bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4792{ 4793 bfd *dynobj; 4794 asection *sdyn; 4795 struct _bfd_sparc_elf_link_hash_table *htab; 4796 4797 htab = _bfd_sparc_elf_hash_table (info); 4798 BFD_ASSERT (htab != NULL); 4799 dynobj = htab->elf.dynobj; 4800 4801 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4802 4803 if (elf_hash_table (info)->dynamic_sections_created) 4804 { 4805 asection *splt; 4806 4807 splt = htab->elf.splt; 4808 BFD_ASSERT (splt != NULL && sdyn != NULL); 4809 4810 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt)) 4811 return FALSE; 4812 4813 /* Initialize the contents of the .plt section. */ 4814 if (splt->size > 0) 4815 { 4816 if (htab->is_vxworks) 4817 { 4818 if (bfd_link_pic (info)) 4819 sparc_vxworks_finish_shared_plt (output_bfd, info); 4820 else 4821 sparc_vxworks_finish_exec_plt (output_bfd, info); 4822 } 4823 else 4824 { 4825 memset (splt->contents, 0, htab->plt_header_size); 4826 if (!ABI_64_P (output_bfd)) 4827 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, 4828 splt->contents + splt->size - 4); 4829 } 4830 } 4831 4832 if (elf_section_data (splt->output_section) != NULL) 4833 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4834 = ((htab->is_vxworks || !ABI_64_P (output_bfd)) 4835 ? 0 : htab->plt_entry_size); 4836 } 4837 4838 /* Set the first entry in the global offset table to the address of 4839 the dynamic section. */ 4840 if (htab->elf.sgot && htab->elf.sgot->size > 0) 4841 { 4842 bfd_vma val = (sdyn ? 4843 sdyn->output_section->vma + sdyn->output_offset : 4844 0); 4845 4846 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents); 4847 } 4848 4849 if (htab->elf.sgot) 4850 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4851 SPARC_ELF_WORD_BYTES (htab); 4852 4853 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ 4854 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info); 4855 4856 return TRUE; 4857} 4858 4859 4860/* Set the right machine number for a SPARC ELF file. */ 4861 4862bfd_boolean 4863_bfd_sparc_elf_object_p (bfd *abfd) 4864{ 4865 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU]; 4866 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS]; 4867 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2]; 4868 4869 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT; 4870 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF 4871 | ELF_SPARC_HWCAP_VIS3 4872 | ELF_SPARC_HWCAP_HPC); 4873 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES 4874 | ELF_SPARC_HWCAP_DES 4875 | ELF_SPARC_HWCAP_KASUMI 4876 | ELF_SPARC_HWCAP_CAMELLIA 4877 | ELF_SPARC_HWCAP_MD5 4878 | ELF_SPARC_HWCAP_SHA1 4879 | ELF_SPARC_HWCAP_SHA256 4880 | ELF_SPARC_HWCAP_SHA512 4881 | ELF_SPARC_HWCAP_MPMUL 4882 | ELF_SPARC_HWCAP_MONT 4883 | ELF_SPARC_HWCAP_CRC32C 4884 | ELF_SPARC_HWCAP_CBCOND 4885 | ELF_SPARC_HWCAP_PAUSE); 4886 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU 4887 | ELF_SPARC_HWCAP_IMA); 4888 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5 4889 | ELF_SPARC_HWCAP2_MWAIT 4890 | ELF_SPARC_HWCAP2_XMPMUL 4891 | ELF_SPARC_HWCAP2_XMONT); 4892 4893 if (ABI_64_P (abfd)) 4894 { 4895 unsigned long mach = bfd_mach_sparc_v9; 4896 4897 if (hwcaps2->i & v9m_hwcaps2_mask) 4898 mach = bfd_mach_sparc_v9m; 4899 else if (hwcaps->i & v9v_hwcaps_mask) 4900 mach = bfd_mach_sparc_v9v; 4901 else if (hwcaps->i & v9e_hwcaps_mask) 4902 mach = bfd_mach_sparc_v9e; 4903 else if (hwcaps->i & v9d_hwcaps_mask) 4904 mach = bfd_mach_sparc_v9d; 4905 else if (hwcaps->i & v9c_hwcaps_mask) 4906 mach = bfd_mach_sparc_v9c; 4907 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 4908 mach = bfd_mach_sparc_v9b; 4909 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 4910 mach = bfd_mach_sparc_v9a; 4911 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); 4912 } 4913 else 4914 { 4915 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) 4916 { 4917 if (hwcaps2->i & v9m_hwcaps2_mask) 4918 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4919 bfd_mach_sparc_v8plusm); 4920 else if (hwcaps->i & v9v_hwcaps_mask) 4921 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4922 bfd_mach_sparc_v8plusv); 4923 else if (hwcaps->i & v9e_hwcaps_mask) 4924 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4925 bfd_mach_sparc_v8pluse); 4926 else if (hwcaps->i & v9d_hwcaps_mask) 4927 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4928 bfd_mach_sparc_v8plusd); 4929 else if (hwcaps->i & v9c_hwcaps_mask) 4930 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4931 bfd_mach_sparc_v8plusc); 4932 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 4933 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4934 bfd_mach_sparc_v8plusb); 4935 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 4936 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4937 bfd_mach_sparc_v8plusa); 4938 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) 4939 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4940 bfd_mach_sparc_v8plus); 4941 else 4942 return FALSE; 4943 } 4944 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) 4945 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4946 bfd_mach_sparc_sparclite_le); 4947 else 4948 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 4949 } 4950} 4951 4952/* Return address for Ith PLT stub in section PLT, for relocation REL 4953 or (bfd_vma) -1 if it should not be included. */ 4954 4955bfd_vma 4956_bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel) 4957{ 4958 if (ABI_64_P (plt->owner)) 4959 { 4960 bfd_vma j; 4961 4962 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE; 4963 if (i < PLT64_LARGE_THRESHOLD) 4964 return plt->vma + i * PLT64_ENTRY_SIZE; 4965 4966 j = (i - PLT64_LARGE_THRESHOLD) % 160; 4967 i -= j; 4968 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6; 4969 } 4970 else 4971 return rel->address; 4972} 4973 4974/* Merge backend specific data from an object file to the output 4975 object file when linking. */ 4976 4977bfd_boolean 4978_bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4979{ 4980 bfd *obfd = info->output_bfd; 4981 obj_attribute *in_attr, *in_attrs; 4982 obj_attribute *out_attr, *out_attrs; 4983 4984 if (!elf_known_obj_attributes_proc (obfd)[0].i) 4985 { 4986 /* This is the first object. Copy the attributes. */ 4987 _bfd_elf_copy_obj_attributes (ibfd, obfd); 4988 4989 /* Use the Tag_null value to indicate the attributes have been 4990 initialized. */ 4991 elf_known_obj_attributes_proc (obfd)[0].i = 1; 4992 4993 return TRUE; 4994 } 4995 4996 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; 4997 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; 4998 4999 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS]; 5000 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS]; 5001 5002 out_attr->i |= in_attr->i; 5003 out_attr->type = 1; 5004 5005 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2]; 5006 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2]; 5007 5008 out_attr->i |= in_attr->i; 5009 out_attr->type = 1; 5010 5011 /* Merge Tag_compatibility attributes and any common GNU ones. */ 5012 _bfd_elf_merge_object_attributes (ibfd, info); 5013 5014 return TRUE; 5015} 5016