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