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