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