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 /* PR15323, ref flags aren't set for references in the same 1455 object. */ 1456 h->root.non_ir_ref = 1; 1457 } 1458 1459 if (h && h->type == STT_GNU_IFUNC) 1460 { 1461 if (h->def_regular) 1462 { 1463 h->ref_regular = 1; 1464 h->plt.refcount += 1; 1465 } 1466 } 1467 1468 /* Compatibility with old R_SPARC_REV32 reloc conflicting 1469 with R_SPARC_TLS_GD_HI22. */ 1470 if (! ABI_64_P (abfd) && ! checked_tlsgd) 1471 switch (r_type) 1472 { 1473 case R_SPARC_TLS_GD_HI22: 1474 { 1475 const Elf_Internal_Rela *relt; 1476 1477 for (relt = rel + 1; relt < rel_end; relt++) 1478 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10 1479 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD 1480 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL) 1481 break; 1482 checked_tlsgd = TRUE; 1483 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end; 1484 } 1485 break; 1486 case R_SPARC_TLS_GD_LO10: 1487 case R_SPARC_TLS_GD_ADD: 1488 case R_SPARC_TLS_GD_CALL: 1489 checked_tlsgd = TRUE; 1490 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE; 1491 break; 1492 } 1493 1494 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL); 1495 switch (r_type) 1496 { 1497 case R_SPARC_TLS_LDM_HI22: 1498 case R_SPARC_TLS_LDM_LO10: 1499 htab->tls_ldm_got.refcount += 1; 1500 break; 1501 1502 case R_SPARC_TLS_LE_HIX22: 1503 case R_SPARC_TLS_LE_LOX10: 1504 if (info->shared) 1505 goto r_sparc_plt32; 1506 break; 1507 1508 case R_SPARC_TLS_IE_HI22: 1509 case R_SPARC_TLS_IE_LO10: 1510 if (info->shared) 1511 info->flags |= DF_STATIC_TLS; 1512 /* Fall through */ 1513 1514 case R_SPARC_GOT10: 1515 case R_SPARC_GOT13: 1516 case R_SPARC_GOT22: 1517 case R_SPARC_GOTDATA_HIX22: 1518 case R_SPARC_GOTDATA_LOX10: 1519 case R_SPARC_GOTDATA_OP_HIX22: 1520 case R_SPARC_GOTDATA_OP_LOX10: 1521 case R_SPARC_TLS_GD_HI22: 1522 case R_SPARC_TLS_GD_LO10: 1523 /* This symbol requires a global offset table entry. */ 1524 { 1525 int tls_type, old_tls_type; 1526 1527 switch (r_type) 1528 { 1529 default: 1530 case R_SPARC_GOT10: 1531 case R_SPARC_GOT13: 1532 case R_SPARC_GOT22: 1533 case R_SPARC_GOTDATA_OP_HIX22: 1534 case R_SPARC_GOTDATA_OP_LOX10: 1535 tls_type = GOT_NORMAL; 1536 break; 1537 case R_SPARC_TLS_GD_HI22: 1538 case R_SPARC_TLS_GD_LO10: 1539 tls_type = GOT_TLS_GD; 1540 break; 1541 case R_SPARC_TLS_IE_HI22: 1542 case R_SPARC_TLS_IE_LO10: 1543 tls_type = GOT_TLS_IE; 1544 break; 1545 } 1546 1547 if (h != NULL) 1548 { 1549 h->got.refcount += 1; 1550 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 1551 } 1552 else 1553 { 1554 bfd_signed_vma *local_got_refcounts; 1555 1556 /* This is a global offset table entry for a local symbol. */ 1557 local_got_refcounts = elf_local_got_refcounts (abfd); 1558 if (local_got_refcounts == NULL) 1559 { 1560 bfd_size_type size; 1561 1562 size = symtab_hdr->sh_info; 1563 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1564 local_got_refcounts = ((bfd_signed_vma *) 1565 bfd_zalloc (abfd, size)); 1566 if (local_got_refcounts == NULL) 1567 return FALSE; 1568 elf_local_got_refcounts (abfd) = local_got_refcounts; 1569 _bfd_sparc_elf_local_got_tls_type (abfd) 1570 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1571 } 1572 switch (r_type) 1573 { 1574 case R_SPARC_GOTDATA_OP_HIX22: 1575 case R_SPARC_GOTDATA_OP_LOX10: 1576 break; 1577 1578 default: 1579 local_got_refcounts[r_symndx] += 1; 1580 break; 1581 } 1582 old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx]; 1583 } 1584 1585 /* If a TLS symbol is accessed using IE at least once, 1586 there is no point to use dynamic model for it. */ 1587 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1588 && (old_tls_type != GOT_TLS_GD 1589 || tls_type != GOT_TLS_IE)) 1590 { 1591 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1592 tls_type = old_tls_type; 1593 else 1594 { 1595 (*_bfd_error_handler) 1596 (_("%B: `%s' accessed both as normal and thread local symbol"), 1597 abfd, h ? h->root.root.string : "<local>"); 1598 return FALSE; 1599 } 1600 } 1601 1602 if (old_tls_type != tls_type) 1603 { 1604 if (h != NULL) 1605 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type; 1606 else 1607 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1608 } 1609 } 1610 1611 if (htab->elf.sgot == NULL) 1612 { 1613 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) 1614 return FALSE; 1615 } 1616 break; 1617 1618 case R_SPARC_TLS_GD_CALL: 1619 case R_SPARC_TLS_LDM_CALL: 1620 if (info->shared) 1621 { 1622 /* These are basically R_SPARC_TLS_WPLT30 relocs against 1623 __tls_get_addr. */ 1624 struct bfd_link_hash_entry *bh = NULL; 1625 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1626 "__tls_get_addr", 0, 1627 bfd_und_section_ptr, 0, 1628 NULL, FALSE, FALSE, 1629 &bh)) 1630 return FALSE; 1631 h = (struct elf_link_hash_entry *) bh; 1632 } 1633 else 1634 break; 1635 /* Fall through */ 1636 1637 case R_SPARC_PLT32: 1638 case R_SPARC_WPLT30: 1639 case R_SPARC_HIPLT22: 1640 case R_SPARC_LOPLT10: 1641 case R_SPARC_PCPLT32: 1642 case R_SPARC_PCPLT22: 1643 case R_SPARC_PCPLT10: 1644 case R_SPARC_PLT64: 1645 /* This symbol requires a procedure linkage table entry. We 1646 actually build the entry in adjust_dynamic_symbol, 1647 because this might be a case of linking PIC code without 1648 linking in any dynamic objects, in which case we don't 1649 need to generate a procedure linkage table after all. */ 1650 1651 if (h == NULL) 1652 { 1653 if (! ABI_64_P (abfd)) 1654 { 1655 /* The Solaris native assembler will generate a WPLT30 1656 reloc for a local symbol if you assemble a call from 1657 one section to another when using -K pic. We treat 1658 it as WDISP30. */ 1659 if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) 1660 goto r_sparc_plt32; 1661 break; 1662 } 1663 /* PR 7027: We need similar behaviour for 64-bit binaries. */ 1664 else if (r_type == R_SPARC_WPLT30) 1665 break; 1666 1667 /* It does not make sense to have a procedure linkage 1668 table entry for a local symbol. */ 1669 bfd_set_error (bfd_error_bad_value); 1670 return FALSE; 1671 } 1672 1673 h->needs_plt = 1; 1674 1675 { 1676 int this_r_type; 1677 1678 this_r_type = SPARC_ELF_R_TYPE (rel->r_info); 1679 if (this_r_type == R_SPARC_PLT32 1680 || this_r_type == R_SPARC_PLT64) 1681 goto r_sparc_plt32; 1682 } 1683 h->plt.refcount += 1; 1684 break; 1685 1686 case R_SPARC_PC10: 1687 case R_SPARC_PC22: 1688 case R_SPARC_PC_HH22: 1689 case R_SPARC_PC_HM10: 1690 case R_SPARC_PC_LM22: 1691 if (h != NULL) 1692 h->non_got_ref = 1; 1693 1694 if (h != NULL 1695 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1696 break; 1697 /* Fall through. */ 1698 1699 case R_SPARC_DISP8: 1700 case R_SPARC_DISP16: 1701 case R_SPARC_DISP32: 1702 case R_SPARC_DISP64: 1703 case R_SPARC_WDISP30: 1704 case R_SPARC_WDISP22: 1705 case R_SPARC_WDISP19: 1706 case R_SPARC_WDISP16: 1707 case R_SPARC_WDISP10: 1708 case R_SPARC_8: 1709 case R_SPARC_16: 1710 case R_SPARC_32: 1711 case R_SPARC_HI22: 1712 case R_SPARC_22: 1713 case R_SPARC_13: 1714 case R_SPARC_LO10: 1715 case R_SPARC_UA16: 1716 case R_SPARC_UA32: 1717 case R_SPARC_10: 1718 case R_SPARC_11: 1719 case R_SPARC_64: 1720 case R_SPARC_OLO10: 1721 case R_SPARC_HH22: 1722 case R_SPARC_HM10: 1723 case R_SPARC_LM22: 1724 case R_SPARC_7: 1725 case R_SPARC_5: 1726 case R_SPARC_6: 1727 case R_SPARC_HIX22: 1728 case R_SPARC_LOX10: 1729 case R_SPARC_H44: 1730 case R_SPARC_M44: 1731 case R_SPARC_L44: 1732 case R_SPARC_H34: 1733 case R_SPARC_UA64: 1734 if (h != NULL) 1735 h->non_got_ref = 1; 1736 1737 r_sparc_plt32: 1738 if (h != NULL && !info->shared) 1739 { 1740 /* We may need a .plt entry if the function this reloc 1741 refers to is in a shared lib. */ 1742 h->plt.refcount += 1; 1743 } 1744 1745 /* If we are creating a shared library, and this is a reloc 1746 against a global symbol, or a non PC relative reloc 1747 against a local symbol, then we need to copy the reloc 1748 into the shared library. However, if we are linking with 1749 -Bsymbolic, we do not need to copy a reloc against a 1750 global symbol which is defined in an object we are 1751 including in the link (i.e., DEF_REGULAR is set). At 1752 this point we have not seen all the input files, so it is 1753 possible that DEF_REGULAR is not set now but will be set 1754 later (it is never cleared). In case of a weak definition, 1755 DEF_REGULAR may be cleared later by a strong definition in 1756 a shared library. We account for that possibility below by 1757 storing information in the relocs_copied field of the hash 1758 table entry. A similar situation occurs when creating 1759 shared libraries and symbol visibility changes render the 1760 symbol local. 1761 1762 If on the other hand, we are creating an executable, we 1763 may need to keep relocations for symbols satisfied by a 1764 dynamic library if we manage to avoid copy relocs for the 1765 symbol. */ 1766 if ((info->shared 1767 && (sec->flags & SEC_ALLOC) != 0 1768 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative 1769 || (h != NULL 1770 && (! SYMBOLIC_BIND (info, h) 1771 || h->root.type == bfd_link_hash_defweak 1772 || !h->def_regular)))) 1773 || (!info->shared 1774 && (sec->flags & SEC_ALLOC) != 0 1775 && h != NULL 1776 && (h->root.type == bfd_link_hash_defweak 1777 || !h->def_regular)) 1778 || (!info->shared 1779 && h != NULL 1780 && h->type == STT_GNU_IFUNC)) 1781 { 1782 struct _bfd_sparc_elf_dyn_relocs *p; 1783 struct _bfd_sparc_elf_dyn_relocs **head; 1784 1785 /* When creating a shared object, we must copy these 1786 relocs into the output file. We create a reloc 1787 section in dynobj and make room for the reloc. */ 1788 if (sreloc == NULL) 1789 { 1790 sreloc = _bfd_elf_make_dynamic_reloc_section 1791 (sec, htab->elf.dynobj, htab->word_align_power, 1792 abfd, /*rela?*/ TRUE); 1793 1794 if (sreloc == NULL) 1795 return FALSE; 1796 } 1797 1798 /* If this is a global symbol, we count the number of 1799 relocations we need for this symbol. */ 1800 if (h != NULL) 1801 head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs; 1802 else 1803 { 1804 /* Track dynamic relocs needed for local syms too. 1805 We really need local syms available to do this 1806 easily. Oh well. */ 1807 asection *s; 1808 void *vpp; 1809 1810 BFD_ASSERT (isym != NULL); 1811 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 1812 if (s == NULL) 1813 s = sec; 1814 1815 vpp = &elf_section_data (s)->local_dynrel; 1816 head = (struct _bfd_sparc_elf_dyn_relocs **) vpp; 1817 } 1818 1819 p = *head; 1820 if (p == NULL || p->sec != sec) 1821 { 1822 bfd_size_type amt = sizeof *p; 1823 p = ((struct _bfd_sparc_elf_dyn_relocs *) 1824 bfd_alloc (htab->elf.dynobj, amt)); 1825 if (p == NULL) 1826 return FALSE; 1827 p->next = *head; 1828 *head = p; 1829 p->sec = sec; 1830 p->count = 0; 1831 p->pc_count = 0; 1832 } 1833 1834 p->count += 1; 1835 if (_bfd_sparc_elf_howto_table[r_type].pc_relative) 1836 p->pc_count += 1; 1837 } 1838 1839 break; 1840 1841 case R_SPARC_GNU_VTINHERIT: 1842 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1843 return FALSE; 1844 break; 1845 1846 case R_SPARC_GNU_VTENTRY: 1847 BFD_ASSERT (h != NULL); 1848 if (h != NULL 1849 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1850 return FALSE; 1851 break; 1852 1853 case R_SPARC_REGISTER: 1854 /* Nothing to do. */ 1855 break; 1856 1857 default: 1858 break; 1859 } 1860 } 1861 1862 return TRUE; 1863 } 1864 1865 asection * 1866 _bfd_sparc_elf_gc_mark_hook (asection *sec, 1867 struct bfd_link_info *info, 1868 Elf_Internal_Rela *rel, 1869 struct elf_link_hash_entry *h, 1870 Elf_Internal_Sym *sym) 1871 { 1872 if (h != NULL) 1873 switch (SPARC_ELF_R_TYPE (rel->r_info)) 1874 { 1875 case R_SPARC_GNU_VTINHERIT: 1876 case R_SPARC_GNU_VTENTRY: 1877 return NULL; 1878 } 1879 1880 /* FIXME: The test here, in check_relocs and in relocate_section 1881 dealing with TLS optimization, ought to be !info->executable. */ 1882 if (info->shared) 1883 { 1884 switch (SPARC_ELF_R_TYPE (rel->r_info)) 1885 { 1886 case R_SPARC_TLS_GD_CALL: 1887 case R_SPARC_TLS_LDM_CALL: 1888 /* This reloc implicitly references __tls_get_addr. We know 1889 another reloc will reference the same symbol as the one 1890 on this reloc, so the real symbol and section will be 1891 gc marked when processing the other reloc. That lets 1892 us handle __tls_get_addr here. */ 1893 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 1894 FALSE, FALSE, TRUE); 1895 BFD_ASSERT (h != NULL); 1896 h->mark = 1; 1897 if (h->u.weakdef != NULL) 1898 h->u.weakdef->mark = 1; 1899 sym = NULL; 1900 } 1901 } 1902 1903 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1904 } 1905 1906 static Elf_Internal_Rela * 1907 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel, 1908 Elf_Internal_Rela *relend, 1909 bfd_vma offset) 1910 { 1911 while (rel < relend) 1912 { 1913 if (rel->r_offset == offset) 1914 return rel; 1915 rel++; 1916 } 1917 return NULL; 1918 } 1919 1920 /* Update the got entry reference counts for the section being removed. */ 1921 bfd_boolean 1922 _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 1923 asection *sec, const Elf_Internal_Rela *relocs) 1924 { 1925 struct _bfd_sparc_elf_link_hash_table *htab; 1926 Elf_Internal_Shdr *symtab_hdr; 1927 struct elf_link_hash_entry **sym_hashes; 1928 bfd_signed_vma *local_got_refcounts; 1929 const Elf_Internal_Rela *rel, *relend; 1930 1931 if (info->relocatable) 1932 return TRUE; 1933 1934 BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0); 1935 1936 elf_section_data (sec)->local_dynrel = NULL; 1937 1938 htab = _bfd_sparc_elf_hash_table (info); 1939 BFD_ASSERT (htab != NULL); 1940 symtab_hdr = &elf_symtab_hdr (abfd); 1941 sym_hashes = elf_sym_hashes (abfd); 1942 local_got_refcounts = elf_local_got_refcounts (abfd); 1943 1944 relend = relocs + sec->reloc_count; 1945 for (rel = relocs; rel < relend; rel++) 1946 { 1947 unsigned long r_symndx; 1948 unsigned int r_type; 1949 struct elf_link_hash_entry *h = NULL; 1950 1951 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); 1952 if (r_symndx >= symtab_hdr->sh_info) 1953 { 1954 struct _bfd_sparc_elf_link_hash_entry *eh; 1955 struct _bfd_sparc_elf_dyn_relocs **pp; 1956 struct _bfd_sparc_elf_dyn_relocs *p; 1957 1958 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1959 while (h->root.type == bfd_link_hash_indirect 1960 || h->root.type == bfd_link_hash_warning) 1961 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1962 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 1963 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 1964 if (p->sec == sec) 1965 { 1966 /* Everything must go for SEC. */ 1967 *pp = p->next; 1968 break; 1969 } 1970 } 1971 1972 r_type = SPARC_ELF_R_TYPE (rel->r_info); 1973 r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL); 1974 switch (r_type) 1975 { 1976 case R_SPARC_TLS_LDM_HI22: 1977 case R_SPARC_TLS_LDM_LO10: 1978 if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0) 1979 _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1; 1980 break; 1981 1982 case R_SPARC_TLS_GD_HI22: 1983 case R_SPARC_TLS_GD_LO10: 1984 case R_SPARC_TLS_IE_HI22: 1985 case R_SPARC_TLS_IE_LO10: 1986 case R_SPARC_GOT10: 1987 case R_SPARC_GOT13: 1988 case R_SPARC_GOT22: 1989 case R_SPARC_GOTDATA_HIX22: 1990 case R_SPARC_GOTDATA_LOX10: 1991 case R_SPARC_GOTDATA_OP_HIX22: 1992 case R_SPARC_GOTDATA_OP_LOX10: 1993 if (h != NULL) 1994 { 1995 if (h->got.refcount > 0) 1996 h->got.refcount--; 1997 } 1998 else 1999 { 2000 switch (r_type) 2001 { 2002 case R_SPARC_GOTDATA_OP_HIX22: 2003 case R_SPARC_GOTDATA_OP_LOX10: 2004 break; 2005 2006 default: 2007 if (local_got_refcounts[r_symndx] > 0) 2008 local_got_refcounts[r_symndx]--; 2009 break; 2010 } 2011 } 2012 break; 2013 2014 case R_SPARC_PC10: 2015 case R_SPARC_PC22: 2016 case R_SPARC_PC_HH22: 2017 case R_SPARC_PC_HM10: 2018 case R_SPARC_PC_LM22: 2019 if (h != NULL 2020 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2021 break; 2022 /* Fall through. */ 2023 2024 case R_SPARC_DISP8: 2025 case R_SPARC_DISP16: 2026 case R_SPARC_DISP32: 2027 case R_SPARC_DISP64: 2028 case R_SPARC_WDISP30: 2029 case R_SPARC_WDISP22: 2030 case R_SPARC_WDISP19: 2031 case R_SPARC_WDISP16: 2032 case R_SPARC_WDISP10: 2033 case R_SPARC_8: 2034 case R_SPARC_16: 2035 case R_SPARC_32: 2036 case R_SPARC_HI22: 2037 case R_SPARC_22: 2038 case R_SPARC_13: 2039 case R_SPARC_LO10: 2040 case R_SPARC_UA16: 2041 case R_SPARC_UA32: 2042 case R_SPARC_PLT32: 2043 case R_SPARC_10: 2044 case R_SPARC_11: 2045 case R_SPARC_64: 2046 case R_SPARC_OLO10: 2047 case R_SPARC_HH22: 2048 case R_SPARC_HM10: 2049 case R_SPARC_LM22: 2050 case R_SPARC_7: 2051 case R_SPARC_5: 2052 case R_SPARC_6: 2053 case R_SPARC_HIX22: 2054 case R_SPARC_LOX10: 2055 case R_SPARC_H44: 2056 case R_SPARC_M44: 2057 case R_SPARC_L44: 2058 case R_SPARC_H34: 2059 case R_SPARC_UA64: 2060 if (info->shared) 2061 break; 2062 /* Fall through. */ 2063 2064 case R_SPARC_WPLT30: 2065 if (h != NULL) 2066 { 2067 if (h->plt.refcount > 0) 2068 h->plt.refcount--; 2069 } 2070 break; 2071 2072 default: 2073 break; 2074 } 2075 } 2076 2077 return TRUE; 2078 } 2079 2080 /* Adjust a symbol defined by a dynamic object and referenced by a 2081 regular object. The current definition is in some section of the 2082 dynamic object, but we're not including those sections. We have to 2083 change the definition to something the rest of the link can 2084 understand. */ 2085 2086 bfd_boolean 2087 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2088 struct elf_link_hash_entry *h) 2089 { 2090 struct _bfd_sparc_elf_link_hash_table *htab; 2091 struct _bfd_sparc_elf_link_hash_entry * eh; 2092 struct _bfd_sparc_elf_dyn_relocs *p; 2093 asection *s; 2094 2095 htab = _bfd_sparc_elf_hash_table (info); 2096 BFD_ASSERT (htab != NULL); 2097 2098 /* Make sure we know what is going on here. */ 2099 BFD_ASSERT (htab->elf.dynobj != NULL 2100 && (h->needs_plt 2101 || h->type == STT_GNU_IFUNC 2102 || h->u.weakdef != NULL 2103 || (h->def_dynamic 2104 && h->ref_regular 2105 && !h->def_regular))); 2106 2107 /* If this is a function, put it in the procedure linkage table. We 2108 will fill in the contents of the procedure linkage table later 2109 (although we could actually do it here). The STT_NOTYPE 2110 condition is a hack specifically for the Oracle libraries 2111 delivered for Solaris; for some inexplicable reason, they define 2112 some of their functions as STT_NOTYPE when they really should be 2113 STT_FUNC. */ 2114 if (h->type == STT_FUNC 2115 || h->type == STT_GNU_IFUNC 2116 || h->needs_plt 2117 || (h->type == STT_NOTYPE 2118 && (h->root.type == bfd_link_hash_defined 2119 || h->root.type == bfd_link_hash_defweak) 2120 && (h->root.u.def.section->flags & SEC_CODE) != 0)) 2121 { 2122 if (h->plt.refcount <= 0 2123 || (h->type != STT_GNU_IFUNC 2124 && (SYMBOL_CALLS_LOCAL (info, h) 2125 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2126 && h->root.type == bfd_link_hash_undefweak)))) 2127 { 2128 /* This case can occur if we saw a WPLT30 reloc in an input 2129 file, but the symbol was never referred to by a dynamic 2130 object, or if all references were garbage collected. In 2131 such a case, we don't actually need to build a procedure 2132 linkage table, and we can just do a WDISP30 reloc instead. */ 2133 h->plt.offset = (bfd_vma) -1; 2134 h->needs_plt = 0; 2135 } 2136 2137 return TRUE; 2138 } 2139 else 2140 h->plt.offset = (bfd_vma) -1; 2141 2142 /* If this is a weak symbol, and there is a real definition, the 2143 processor independent code will have arranged for us to see the 2144 real definition first, and we can just use the same value. */ 2145 if (h->u.weakdef != NULL) 2146 { 2147 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2148 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2149 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2150 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2151 return TRUE; 2152 } 2153 2154 /* This is a reference to a symbol defined by a dynamic object which 2155 is not a function. */ 2156 2157 /* If we are creating a shared library, we must presume that the 2158 only references to the symbol are via the global offset table. 2159 For such cases we need not do anything here; the relocations will 2160 be handled correctly by relocate_section. */ 2161 if (info->shared) 2162 return TRUE; 2163 2164 /* If there are no references to this symbol that do not use the 2165 GOT, we don't need to generate a copy reloc. */ 2166 if (!h->non_got_ref) 2167 return TRUE; 2168 2169 /* If -z nocopyreloc was given, we won't generate them either. */ 2170 if (info->nocopyreloc) 2171 { 2172 h->non_got_ref = 0; 2173 return TRUE; 2174 } 2175 2176 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 2177 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2178 { 2179 s = p->sec->output_section; 2180 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2181 break; 2182 } 2183 2184 /* If we didn't find any dynamic relocs in read-only sections, then 2185 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2186 if (p == NULL) 2187 { 2188 h->non_got_ref = 0; 2189 return TRUE; 2190 } 2191 2192 /* We must allocate the symbol in our .dynbss section, which will 2193 become part of the .bss section of the executable. There will be 2194 an entry for this symbol in the .dynsym section. The dynamic 2195 object will contain position independent code, so all references 2196 from the dynamic object to this symbol will go through the global 2197 offset table. The dynamic linker will use the .dynsym entry to 2198 determine the address it must put in the global offset table, so 2199 both the dynamic object and the regular object will refer to the 2200 same memory location for the variable. */ 2201 2202 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker 2203 to copy the initial value out of the dynamic object and into the 2204 runtime process image. We need to remember the offset into the 2205 .rel.bss section we are going to use. */ 2206 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2207 { 2208 htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab); 2209 h->needs_copy = 1; 2210 } 2211 2212 s = htab->sdynbss; 2213 2214 return _bfd_elf_adjust_dynamic_copy (h, s); 2215 } 2216 2217 /* Allocate space in .plt, .got and associated reloc sections for 2218 dynamic relocs. */ 2219 2220 static bfd_boolean 2221 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2222 { 2223 struct bfd_link_info *info; 2224 struct _bfd_sparc_elf_link_hash_table *htab; 2225 struct _bfd_sparc_elf_link_hash_entry *eh; 2226 struct _bfd_sparc_elf_dyn_relocs *p; 2227 2228 if (h->root.type == bfd_link_hash_indirect) 2229 return TRUE; 2230 2231 info = (struct bfd_link_info *) inf; 2232 htab = _bfd_sparc_elf_hash_table (info); 2233 BFD_ASSERT (htab != NULL); 2234 2235 if ((htab->elf.dynamic_sections_created 2236 && h->plt.refcount > 0) 2237 || (h->type == STT_GNU_IFUNC 2238 && h->def_regular 2239 && h->ref_regular)) 2240 { 2241 /* Make sure this symbol is output as a dynamic symbol. 2242 Undefined weak syms won't yet be marked as dynamic. */ 2243 if (h->dynindx == -1 2244 && !h->forced_local) 2245 { 2246 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2247 return FALSE; 2248 } 2249 2250 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h) 2251 || (h->type == STT_GNU_IFUNC 2252 && h->def_regular)) 2253 { 2254 asection *s = htab->elf.splt; 2255 2256 if (s == NULL) 2257 s = htab->elf.iplt; 2258 2259 /* Allocate room for the header. */ 2260 if (s->size == 0) 2261 { 2262 s->size = htab->plt_header_size; 2263 2264 /* Allocate space for the .rela.plt.unloaded relocations. */ 2265 if (htab->is_vxworks && !info->shared) 2266 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2; 2267 } 2268 2269 /* The procedure linkage table size is bounded by the magnitude 2270 of the offset we can describe in the entry. */ 2271 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ? 2272 (((bfd_vma)1 << 31) << 1) : 0x400000)) 2273 { 2274 bfd_set_error (bfd_error_bad_value); 2275 return FALSE; 2276 } 2277 2278 if (SPARC_ELF_WORD_BYTES(htab) == 8 2279 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) 2280 { 2281 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE; 2282 2283 2284 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE; 2285 2286 h->plt.offset = (s->size - (off * 8)); 2287 } 2288 else 2289 h->plt.offset = s->size; 2290 2291 /* If this symbol is not defined in a regular file, and we are 2292 not generating a shared library, then set the symbol to this 2293 location in the .plt. This is required to make function 2294 pointers compare as equal between the normal executable and 2295 the shared library. */ 2296 if (! info->shared 2297 && !h->def_regular) 2298 { 2299 h->root.u.def.section = s; 2300 h->root.u.def.value = h->plt.offset; 2301 } 2302 2303 /* Make room for this entry. */ 2304 s->size += htab->plt_entry_size; 2305 2306 /* We also need to make an entry in the .rela.plt section. */ 2307 if (s == htab->elf.splt) 2308 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab); 2309 else 2310 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab); 2311 2312 if (htab->is_vxworks) 2313 { 2314 /* Allocate space for the .got.plt entry. */ 2315 htab->elf.sgotplt->size += 4; 2316 2317 /* ...and for the .rela.plt.unloaded relocations. */ 2318 if (!info->shared) 2319 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3; 2320 } 2321 } 2322 else 2323 { 2324 h->plt.offset = (bfd_vma) -1; 2325 h->needs_plt = 0; 2326 } 2327 } 2328 else 2329 { 2330 h->plt.offset = (bfd_vma) -1; 2331 h->needs_plt = 0; 2332 } 2333 2334 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary, 2335 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */ 2336 if (h->got.refcount > 0 2337 && !info->shared 2338 && h->dynindx == -1 2339 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2340 h->got.offset = (bfd_vma) -1; 2341 else if (h->got.refcount > 0) 2342 { 2343 asection *s; 2344 bfd_boolean dyn; 2345 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 2346 2347 /* Make sure this symbol is output as a dynamic symbol. 2348 Undefined weak syms won't yet be marked as dynamic. */ 2349 if (h->dynindx == -1 2350 && !h->forced_local) 2351 { 2352 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2353 return FALSE; 2354 } 2355 2356 s = htab->elf.sgot; 2357 h->got.offset = s->size; 2358 s->size += SPARC_ELF_WORD_BYTES (htab); 2359 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */ 2360 if (tls_type == GOT_TLS_GD) 2361 s->size += SPARC_ELF_WORD_BYTES (htab); 2362 dyn = htab->elf.dynamic_sections_created; 2363 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation, 2364 R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if 2365 global. */ 2366 if ((tls_type == GOT_TLS_GD && h->dynindx == -1) 2367 || tls_type == GOT_TLS_IE 2368 || h->type == STT_GNU_IFUNC) 2369 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab); 2370 else if (tls_type == GOT_TLS_GD) 2371 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab); 2372 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2373 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab); 2374 } 2375 else 2376 h->got.offset = (bfd_vma) -1; 2377 2378 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 2379 if (eh->dyn_relocs == NULL) 2380 return TRUE; 2381 2382 /* In the shared -Bsymbolic case, discard space allocated for 2383 dynamic pc-relative relocs against symbols which turn out to be 2384 defined in regular objects. For the normal shared case, discard 2385 space for pc-relative relocs that have become local due to symbol 2386 visibility changes. */ 2387 2388 if (info->shared) 2389 { 2390 if (SYMBOL_CALLS_LOCAL (info, h)) 2391 { 2392 struct _bfd_sparc_elf_dyn_relocs **pp; 2393 2394 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2395 { 2396 p->count -= p->pc_count; 2397 p->pc_count = 0; 2398 if (p->count == 0) 2399 *pp = p->next; 2400 else 2401 pp = &p->next; 2402 } 2403 } 2404 2405 if (htab->is_vxworks) 2406 { 2407 struct _bfd_sparc_elf_dyn_relocs **pp; 2408 2409 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2410 { 2411 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) 2412 *pp = p->next; 2413 else 2414 pp = &p->next; 2415 } 2416 } 2417 2418 /* Also discard relocs on undefined weak syms with non-default 2419 visibility. */ 2420 if (eh->dyn_relocs != NULL 2421 && h->root.type == bfd_link_hash_undefweak) 2422 { 2423 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2424 eh->dyn_relocs = NULL; 2425 2426 /* Make sure undefined weak symbols are output as a dynamic 2427 symbol in PIEs. */ 2428 else if (h->dynindx == -1 2429 && !h->forced_local) 2430 { 2431 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2432 return FALSE; 2433 } 2434 } 2435 } 2436 else 2437 { 2438 /* For the non-shared case, discard space for relocs against 2439 symbols which turn out to need copy relocs or are not 2440 dynamic. */ 2441 2442 if (!h->non_got_ref 2443 && ((h->def_dynamic 2444 && !h->def_regular) 2445 || (htab->elf.dynamic_sections_created 2446 && (h->root.type == bfd_link_hash_undefweak 2447 || h->root.type == bfd_link_hash_undefined)))) 2448 { 2449 /* Make sure this symbol is output as a dynamic symbol. 2450 Undefined weak syms won't yet be marked as dynamic. */ 2451 if (h->dynindx == -1 2452 && !h->forced_local) 2453 { 2454 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2455 return FALSE; 2456 } 2457 2458 /* If that succeeded, we know we'll be keeping all the 2459 relocs. */ 2460 if (h->dynindx != -1) 2461 goto keep; 2462 } 2463 2464 eh->dyn_relocs = NULL; 2465 2466 keep: ; 2467 } 2468 2469 /* Finally, allocate space. */ 2470 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2471 { 2472 asection *sreloc = elf_section_data (p->sec)->sreloc; 2473 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab); 2474 } 2475 2476 return TRUE; 2477 } 2478 2479 /* Allocate space in .plt, .got and associated reloc sections for 2480 local dynamic relocs. */ 2481 2482 static bfd_boolean 2483 allocate_local_dynrelocs (void **slot, void *inf) 2484 { 2485 struct elf_link_hash_entry *h 2486 = (struct elf_link_hash_entry *) *slot; 2487 2488 if (h->type != STT_GNU_IFUNC 2489 || !h->def_regular 2490 || !h->ref_regular 2491 || !h->forced_local 2492 || h->root.type != bfd_link_hash_defined) 2493 abort (); 2494 2495 return allocate_dynrelocs (h, inf); 2496 } 2497 2498 /* Find any dynamic relocs that apply to read-only sections. */ 2499 2500 static bfd_boolean 2501 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2502 { 2503 struct _bfd_sparc_elf_link_hash_entry *eh; 2504 struct _bfd_sparc_elf_dyn_relocs *p; 2505 2506 eh = (struct _bfd_sparc_elf_link_hash_entry *) h; 2507 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2508 { 2509 asection *s = p->sec->output_section; 2510 2511 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2512 { 2513 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2514 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, ignored; 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, ignored); 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 && 3468 h->dynindx != -1 3469 && (! is_plt 3470 || !info->shared 3471 || !SYMBOLIC_BIND (info, h) 3472 || !h->def_regular)) 3473 { 3474 BFD_ASSERT (h->dynindx != -1); 3475 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3476 outrel.r_addend = rel->r_addend; 3477 } 3478 else 3479 { 3480 if (r_type == R_SPARC_32 || r_type == R_SPARC_64) 3481 { 3482 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 3483 0, R_SPARC_RELATIVE); 3484 outrel.r_addend = relocation + rel->r_addend; 3485 } 3486 else 3487 { 3488 long indx; 3489 3490 outrel.r_addend = relocation + rel->r_addend; 3491 3492 if (is_plt) 3493 sec = htab->elf.splt; 3494 3495 if (bfd_is_abs_section (sec)) 3496 indx = 0; 3497 else if (sec == NULL || sec->owner == NULL) 3498 { 3499 bfd_set_error (bfd_error_bad_value); 3500 return FALSE; 3501 } 3502 else 3503 { 3504 asection *osec; 3505 3506 /* We are turning this relocation into one 3507 against a section symbol. It would be 3508 proper to subtract the symbol's value, 3509 osec->vma, from the emitted reloc addend, 3510 but ld.so expects buggy relocs. */ 3511 osec = sec->output_section; 3512 indx = elf_section_data (osec)->dynindx; 3513 3514 if (indx == 0) 3515 { 3516 osec = htab->elf.text_index_section; 3517 indx = elf_section_data (osec)->dynindx; 3518 } 3519 3520 /* FIXME: we really should be able to link non-pic 3521 shared libraries. */ 3522 if (indx == 0) 3523 { 3524 BFD_FAIL (); 3525 (*_bfd_error_handler) 3526 (_("%B: probably compiled without -fPIC?"), 3527 input_bfd); 3528 bfd_set_error (bfd_error_bad_value); 3529 return FALSE; 3530 } 3531 } 3532 3533 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx, 3534 r_type); 3535 } 3536 } 3537 3538 sparc_elf_append_rela (output_bfd, sreloc, &outrel); 3539 3540 /* This reloc will be computed at runtime, so there's no 3541 need to do anything now. */ 3542 if (! relocate) 3543 continue; 3544 } 3545 break; 3546 3547 case R_SPARC_TLS_GD_HI22: 3548 if (! ABI_64_P (input_bfd) 3549 && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd) 3550 { 3551 /* R_SPARC_REV32 used the same reloc number as 3552 R_SPARC_TLS_GD_HI22. */ 3553 r_type = R_SPARC_REV32; 3554 break; 3555 } 3556 /* Fall through */ 3557 3558 case R_SPARC_TLS_GD_LO10: 3559 case R_SPARC_TLS_IE_HI22: 3560 case R_SPARC_TLS_IE_LO10: 3561 r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL); 3562 tls_type = GOT_UNKNOWN; 3563 if (h == NULL && local_got_offsets) 3564 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; 3565 else if (h != NULL) 3566 { 3567 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 3568 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) 3569 switch (SPARC_ELF_R_TYPE (rel->r_info)) 3570 { 3571 case R_SPARC_TLS_GD_HI22: 3572 case R_SPARC_TLS_IE_HI22: 3573 r_type = R_SPARC_TLS_LE_HIX22; 3574 break; 3575 default: 3576 r_type = R_SPARC_TLS_LE_LOX10; 3577 break; 3578 } 3579 } 3580 if (tls_type == GOT_TLS_IE) 3581 switch (r_type) 3582 { 3583 case R_SPARC_TLS_GD_HI22: 3584 r_type = R_SPARC_TLS_IE_HI22; 3585 break; 3586 case R_SPARC_TLS_GD_LO10: 3587 r_type = R_SPARC_TLS_IE_LO10; 3588 break; 3589 } 3590 3591 if (r_type == R_SPARC_TLS_LE_HIX22) 3592 { 3593 relocation = tpoff (info, relocation); 3594 break; 3595 } 3596 if (r_type == R_SPARC_TLS_LE_LOX10) 3597 { 3598 /* Change add into xor. */ 3599 relocation = tpoff (info, relocation); 3600 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd, 3601 contents + rel->r_offset) 3602 | 0x80182000), contents + rel->r_offset); 3603 break; 3604 } 3605 3606 if (h != NULL) 3607 { 3608 off = h->got.offset; 3609 h->got.offset |= 1; 3610 } 3611 else 3612 { 3613 BFD_ASSERT (local_got_offsets != NULL); 3614 off = local_got_offsets[r_symndx]; 3615 local_got_offsets[r_symndx] |= 1; 3616 } 3617 3618 r_sparc_tlsldm: 3619 if (htab->elf.sgot == NULL) 3620 abort (); 3621 3622 if ((off & 1) != 0) 3623 off &= ~1; 3624 else 3625 { 3626 Elf_Internal_Rela outrel; 3627 int dr_type, indx; 3628 3629 if (htab->elf.srelgot == NULL) 3630 abort (); 3631 3632 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 3633 htab->elf.sgot->contents + off); 3634 outrel.r_offset = (htab->elf.sgot->output_section->vma 3635 + htab->elf.sgot->output_offset + off); 3636 indx = h && h->dynindx != -1 ? h->dynindx : 0; 3637 if (r_type == R_SPARC_TLS_IE_HI22 3638 || r_type == R_SPARC_TLS_IE_LO10) 3639 dr_type = SPARC_ELF_TPOFF_RELOC (htab); 3640 else 3641 dr_type = SPARC_ELF_DTPMOD_RELOC (htab); 3642 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0) 3643 outrel.r_addend = relocation - dtpoff_base (info); 3644 else 3645 outrel.r_addend = 0; 3646 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type); 3647 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3648 3649 if (r_type == R_SPARC_TLS_GD_HI22 3650 || r_type == R_SPARC_TLS_GD_LO10) 3651 { 3652 if (indx == 0) 3653 { 3654 BFD_ASSERT (! unresolved_reloc); 3655 SPARC_ELF_PUT_WORD (htab, output_bfd, 3656 relocation - dtpoff_base (info), 3657 (htab->elf.sgot->contents + off 3658 + SPARC_ELF_WORD_BYTES (htab))); 3659 } 3660 else 3661 { 3662 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 3663 (htab->elf.sgot->contents + off 3664 + SPARC_ELF_WORD_BYTES (htab))); 3665 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, 3666 SPARC_ELF_DTPOFF_RELOC (htab)); 3667 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab); 3668 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, 3669 &outrel); 3670 } 3671 } 3672 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab)) 3673 { 3674 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 3675 (htab->elf.sgot->contents + off 3676 + SPARC_ELF_WORD_BYTES (htab))); 3677 } 3678 } 3679 3680 if (off >= (bfd_vma) -2) 3681 abort (); 3682 3683 relocation = htab->elf.sgot->output_offset + off - got_base; 3684 unresolved_reloc = FALSE; 3685 howto = _bfd_sparc_elf_howto_table + r_type; 3686 break; 3687 3688 case R_SPARC_TLS_LDM_HI22: 3689 case R_SPARC_TLS_LDM_LO10: 3690 if (! info->shared) 3691 { 3692 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 3693 continue; 3694 } 3695 off = htab->tls_ldm_got.offset; 3696 htab->tls_ldm_got.offset |= 1; 3697 goto r_sparc_tlsldm; 3698 3699 case R_SPARC_TLS_LDO_HIX22: 3700 case R_SPARC_TLS_LDO_LOX10: 3701 if (info->shared) 3702 { 3703 relocation -= dtpoff_base (info); 3704 break; 3705 } 3706 3707 r_type = (r_type == R_SPARC_TLS_LDO_HIX22 3708 ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10); 3709 /* Fall through. */ 3710 3711 case R_SPARC_TLS_LE_HIX22: 3712 case R_SPARC_TLS_LE_LOX10: 3713 if (info->shared) 3714 { 3715 Elf_Internal_Rela outrel; 3716 bfd_boolean skip; 3717 3718 BFD_ASSERT (sreloc != NULL); 3719 skip = FALSE; 3720 outrel.r_offset = 3721 _bfd_elf_section_offset (output_bfd, info, input_section, 3722 rel->r_offset); 3723 if (outrel.r_offset == (bfd_vma) -1) 3724 skip = TRUE; 3725 else if (outrel.r_offset == (bfd_vma) -2) 3726 skip = TRUE; 3727 outrel.r_offset += (input_section->output_section->vma 3728 + input_section->output_offset); 3729 if (skip) 3730 memset (&outrel, 0, sizeof outrel); 3731 else 3732 { 3733 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type); 3734 outrel.r_addend = relocation - dtpoff_base (info) 3735 + rel->r_addend; 3736 } 3737 3738 sparc_elf_append_rela (output_bfd, sreloc, &outrel); 3739 continue; 3740 } 3741 relocation = tpoff (info, relocation); 3742 break; 3743 3744 case R_SPARC_TLS_LDM_CALL: 3745 if (! info->shared) 3746 { 3747 /* mov %g0, %o0 */ 3748 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset); 3749 continue; 3750 } 3751 /* Fall through */ 3752 3753 case R_SPARC_TLS_GD_CALL: 3754 tls_type = GOT_UNKNOWN; 3755 if (h == NULL && local_got_offsets) 3756 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; 3757 else if (h != NULL) 3758 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 3759 if (! info->shared 3760 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE)) 3761 { 3762 Elf_Internal_Rela *rel2; 3763 bfd_vma insn; 3764 3765 if (!info->shared && (h == NULL || h->dynindx == -1)) 3766 { 3767 /* GD -> LE */ 3768 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 3769 continue; 3770 } 3771 3772 /* GD -> IE */ 3773 if (rel + 1 < relend 3774 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD 3775 && rel[1].r_offset == rel->r_offset + 4 3776 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx 3777 && (((insn = bfd_get_32 (input_bfd, 3778 contents + rel[1].r_offset)) 3779 >> 25) & 0x1f) == 8) 3780 { 3781 /* We have 3782 call __tls_get_addr, %tgd_call(foo) 3783 add %reg1, %reg2, %o0, %tgd_add(foo) 3784 and change it into IE: 3785 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo) 3786 add %g7, %o0, %o0, %tie_add(foo). 3787 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2, 3788 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2, 3789 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */ 3790 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000), 3791 contents + rel->r_offset); 3792 bfd_put_32 (output_bfd, 0x9001c008, 3793 contents + rel->r_offset + 4); 3794 rel++; 3795 continue; 3796 } 3797 3798 /* We cannot just overwrite the delay slot instruction, 3799 as it might be what puts the %o0 argument to 3800 __tls_get_addr into place. So we have to transpose 3801 the delay slot with the add we patch in. */ 3802 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 3803 bfd_put_32 (output_bfd, insn, 3804 contents + rel->r_offset); 3805 bfd_put_32 (output_bfd, 0x9001c008, 3806 contents + rel->r_offset + 4); 3807 3808 rel2 = rel; 3809 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend, 3810 rel->r_offset + 4)) 3811 != NULL) 3812 { 3813 /* If the instruction we moved has a relocation attached to 3814 it, adjust the offset so that it will apply to the correct 3815 instruction. */ 3816 rel2->r_offset -= 4; 3817 } 3818 continue; 3819 } 3820 3821 h = (struct elf_link_hash_entry *) 3822 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3823 FALSE, TRUE); 3824 BFD_ASSERT (h != NULL); 3825 r_type = R_SPARC_WPLT30; 3826 howto = _bfd_sparc_elf_howto_table + r_type; 3827 goto r_sparc_wplt30; 3828 3829 case R_SPARC_TLS_GD_ADD: 3830 tls_type = GOT_UNKNOWN; 3831 if (h == NULL && local_got_offsets) 3832 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; 3833 else if (h != NULL) 3834 tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; 3835 if (! info->shared || tls_type == GOT_TLS_IE) 3836 { 3837 /* add %reg1, %reg2, %reg3, %tgd_add(foo) 3838 changed into IE: 3839 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo) 3840 or LE: 3841 add %g7, %reg2, %reg3. */ 3842 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3843 if ((h != NULL && h->dynindx != -1) || info->shared) 3844 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000); 3845 else 3846 relocation = (insn & ~0x7c000) | 0x1c000; 3847 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 3848 } 3849 continue; 3850 3851 case R_SPARC_TLS_LDM_ADD: 3852 if (! info->shared) 3853 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); 3854 continue; 3855 3856 case R_SPARC_TLS_LDO_ADD: 3857 if (! info->shared) 3858 { 3859 /* Change rs1 into %g7. */ 3860 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3861 insn = (insn & ~0x7c000) | 0x1c000; 3862 bfd_put_32 (output_bfd, insn, contents + rel->r_offset); 3863 } 3864 continue; 3865 3866 case R_SPARC_TLS_IE_LD: 3867 case R_SPARC_TLS_IE_LDX: 3868 if (! info->shared && (h == NULL || h->dynindx == -1)) 3869 { 3870 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3871 int rs2 = insn & 0x1f; 3872 int rd = (insn >> 25) & 0x1f; 3873 3874 if (rs2 == rd) 3875 relocation = SPARC_NOP; 3876 else 3877 relocation = 0x80100000 | (insn & 0x3e00001f); 3878 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); 3879 } 3880 continue; 3881 3882 case R_SPARC_TLS_IE_ADD: 3883 /* Totally useless relocation. */ 3884 continue; 3885 3886 case R_SPARC_TLS_DTPOFF32: 3887 case R_SPARC_TLS_DTPOFF64: 3888 relocation -= dtpoff_base (info); 3889 break; 3890 3891 default: 3892 break; 3893 } 3894 3895 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3896 because such sections are not SEC_ALLOC and thus ld.so will 3897 not process them. */ 3898 if (unresolved_reloc 3899 && !((input_section->flags & SEC_DEBUGGING) != 0 3900 && h->def_dynamic) 3901 && _bfd_elf_section_offset (output_bfd, info, input_section, 3902 rel->r_offset) != (bfd_vma) -1) 3903 (*_bfd_error_handler) 3904 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3905 input_bfd, 3906 input_section, 3907 (long) rel->r_offset, 3908 howto->name, 3909 h->root.root.string); 3910 3911 r = bfd_reloc_continue; 3912 if (r_type == R_SPARC_OLO10) 3913 { 3914 bfd_vma x; 3915 3916 if (! ABI_64_P (output_bfd)) 3917 abort (); 3918 3919 relocation += rel->r_addend; 3920 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); 3921 3922 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3923 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); 3924 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 3925 3926 r = bfd_check_overflow (howto->complain_on_overflow, 3927 howto->bitsize, howto->rightshift, 3928 bfd_arch_bits_per_address (input_bfd), 3929 relocation); 3930 } 3931 else if (r_type == R_SPARC_WDISP16) 3932 { 3933 bfd_vma x; 3934 3935 relocation += rel->r_addend; 3936 relocation -= (input_section->output_section->vma 3937 + input_section->output_offset); 3938 relocation -= rel->r_offset; 3939 3940 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3941 x |= ((((relocation >> 2) & 0xc000) << 6) 3942 | ((relocation >> 2) & 0x3fff)); 3943 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 3944 3945 r = bfd_check_overflow (howto->complain_on_overflow, 3946 howto->bitsize, howto->rightshift, 3947 bfd_arch_bits_per_address (input_bfd), 3948 relocation); 3949 } 3950 else if (r_type == R_SPARC_WDISP10) 3951 { 3952 bfd_vma x; 3953 3954 relocation += rel->r_addend; 3955 relocation -= (input_section->output_section->vma 3956 + input_section->output_offset); 3957 relocation -= rel->r_offset; 3958 3959 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3960 x |= ((((relocation >> 2) & 0x300) << 11) 3961 | (((relocation >> 2) & 0xff) << 5)); 3962 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 3963 3964 r = bfd_check_overflow (howto->complain_on_overflow, 3965 howto->bitsize, howto->rightshift, 3966 bfd_arch_bits_per_address (input_bfd), 3967 relocation); 3968 } 3969 else if (r_type == R_SPARC_REV32) 3970 { 3971 bfd_vma x; 3972 3973 relocation = relocation + rel->r_addend; 3974 3975 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3976 x = x + relocation; 3977 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); 3978 r = bfd_reloc_ok; 3979 } 3980 else if (r_type == R_SPARC_TLS_LDO_HIX22 3981 || r_type == R_SPARC_TLS_LE_HIX22) 3982 { 3983 bfd_vma x; 3984 3985 relocation += rel->r_addend; 3986 if (r_type == R_SPARC_TLS_LE_HIX22) 3987 relocation ^= MINUS_ONE; 3988 3989 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 3990 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 3991 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 3992 r = bfd_reloc_ok; 3993 } 3994 else if (r_type == R_SPARC_TLS_LDO_LOX10 3995 || r_type == R_SPARC_TLS_LE_LOX10) 3996 { 3997 bfd_vma x; 3998 3999 relocation += rel->r_addend; 4000 relocation &= 0x3ff; 4001 if (r_type == R_SPARC_TLS_LE_LOX10) 4002 relocation |= 0x1c00; 4003 4004 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4005 x = (x & ~(bfd_vma) 0x1fff) | relocation; 4006 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4007 4008 r = bfd_reloc_ok; 4009 } 4010 else if (r_type == R_SPARC_HIX22 4011 || r_type == R_SPARC_GOTDATA_HIX22) 4012 { 4013 bfd_vma x; 4014 4015 relocation += rel->r_addend; 4016 if (r_type == R_SPARC_HIX22 4017 || (bfd_signed_vma) relocation < 0) 4018 relocation = relocation ^ MINUS_ONE; 4019 4020 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4021 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 4022 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4023 4024 r = bfd_check_overflow (howto->complain_on_overflow, 4025 howto->bitsize, howto->rightshift, 4026 bfd_arch_bits_per_address (input_bfd), 4027 relocation); 4028 } 4029 else if (r_type == R_SPARC_LOX10 4030 || r_type == R_SPARC_GOTDATA_LOX10) 4031 { 4032 bfd_vma x; 4033 4034 relocation += rel->r_addend; 4035 if (r_type == R_SPARC_LOX10 4036 || (bfd_signed_vma) relocation < 0) 4037 relocation = (relocation & 0x3ff) | 0x1c00; 4038 else 4039 relocation = (relocation & 0x3ff); 4040 4041 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4042 x = (x & ~(bfd_vma) 0x1fff) | relocation; 4043 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4044 4045 r = bfd_reloc_ok; 4046 } 4047 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) 4048 && sec_do_relax (input_section) 4049 && rel->r_offset + 4 < input_section->size) 4050 { 4051 #define G0 0 4052 #define O7 15 4053 #define XCC (2 << 20) 4054 #define COND(x) (((x)&0xf)<<25) 4055 #define CONDA COND(0x8) 4056 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) 4057 #define INSN_BA (F2(0,2) | CONDA) 4058 #define INSN_OR F3(2, 0x2, 0) 4059 #define INSN_NOP F2(0,4) 4060 4061 bfd_vma x, y; 4062 4063 /* If the instruction is a call with either: 4064 restore 4065 arithmetic instruction with rd == %o7 4066 where rs1 != %o7 and rs2 if it is register != %o7 4067 then we can optimize if the call destination is near 4068 by changing the call into a branch always. */ 4069 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 4070 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 4071 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) 4072 { 4073 if (((y & OP3(~0)) == OP3(0x3d) /* restore */ 4074 || ((y & OP3(0x28)) == 0 /* arithmetic */ 4075 && (y & RD(~0)) == RD(O7))) 4076 && (y & RS1(~0)) != RS1(O7) 4077 && ((y & F3I(~0)) 4078 || (y & RS2(~0)) != RS2(O7))) 4079 { 4080 bfd_vma reloc; 4081 4082 reloc = relocation + rel->r_addend - rel->r_offset; 4083 reloc -= (input_section->output_section->vma 4084 + input_section->output_offset); 4085 4086 /* Ensure the branch fits into simm22. */ 4087 if ((reloc & 3) == 0 4088 && ((reloc & ~(bfd_vma)0x7fffff) == 0 4089 || ((reloc | 0x7fffff) == ~(bfd_vma)0))) 4090 { 4091 reloc >>= 2; 4092 4093 /* Check whether it fits into simm19. */ 4094 if (((reloc & 0x3c0000) == 0 4095 || (reloc & 0x3c0000) == 0x3c0000) 4096 && (ABI_64_P (output_bfd) 4097 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) 4098 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ 4099 else 4100 x = INSN_BA | (reloc & 0x3fffff); /* ba */ 4101 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 4102 r = bfd_reloc_ok; 4103 if (rel->r_offset >= 4 4104 && (y & (0xffffffff ^ RS1(~0))) 4105 == (INSN_OR | RD(O7) | RS2(G0))) 4106 { 4107 bfd_vma z; 4108 unsigned int reg; 4109 4110 z = bfd_get_32 (input_bfd, 4111 contents + rel->r_offset - 4); 4112 if ((z & (0xffffffff ^ RD(~0))) 4113 != (INSN_OR | RS1(O7) | RS2(G0))) 4114 break; 4115 4116 /* The sequence was 4117 or %o7, %g0, %rN 4118 call foo 4119 or %rN, %g0, %o7 4120 4121 If call foo was replaced with ba, replace 4122 or %rN, %g0, %o7 with nop. */ 4123 4124 reg = (y & RS1(~0)) >> 14; 4125 if (reg != ((z & RD(~0)) >> 25) 4126 || reg == G0 || reg == O7) 4127 break; 4128 4129 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, 4130 contents + rel->r_offset + 4); 4131 } 4132 4133 } 4134 } 4135 } 4136 } 4137 4138 if (r == bfd_reloc_continue) 4139 { 4140 do_relocation: 4141 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 4142 contents, rel->r_offset, 4143 relocation, rel->r_addend); 4144 } 4145 if (r != bfd_reloc_ok) 4146 { 4147 switch (r) 4148 { 4149 default: 4150 case bfd_reloc_outofrange: 4151 abort (); 4152 case bfd_reloc_overflow: 4153 { 4154 const char *name; 4155 4156 /* The Solaris native linker silently disregards overflows. 4157 We don't, but this breaks stabs debugging info, whose 4158 relocations are only 32-bits wide. Ignore overflows in 4159 this case and also for discarded entries. */ 4160 if ((r_type == R_SPARC_32 4161 || r_type == R_SPARC_UA32 4162 || r_type == R_SPARC_DISP32) 4163 && (((input_section->flags & SEC_DEBUGGING) != 0 4164 && strcmp (bfd_section_name (input_bfd, 4165 input_section), 4166 ".stab") == 0) 4167 || _bfd_elf_section_offset (output_bfd, info, 4168 input_section, 4169 rel->r_offset) 4170 == (bfd_vma)-1)) 4171 break; 4172 4173 if (h != NULL) 4174 { 4175 /* Assume this is a call protected by other code that 4176 detect the symbol is undefined. If this is the case, 4177 we can safely ignore the overflow. If not, the 4178 program is hosed anyway, and a little warning isn't 4179 going to help. */ 4180 if (h->root.type == bfd_link_hash_undefweak 4181 && howto->pc_relative) 4182 break; 4183 4184 name = NULL; 4185 } 4186 else 4187 { 4188 name = bfd_elf_string_from_elf_section (input_bfd, 4189 symtab_hdr->sh_link, 4190 sym->st_name); 4191 if (name == NULL) 4192 return FALSE; 4193 if (*name == '\0') 4194 name = bfd_section_name (input_bfd, sec); 4195 } 4196 if (! ((*info->callbacks->reloc_overflow) 4197 (info, (h ? &h->root : NULL), name, howto->name, 4198 (bfd_vma) 0, input_bfd, input_section, 4199 rel->r_offset))) 4200 return FALSE; 4201 } 4202 break; 4203 } 4204 } 4205 } 4206 4207 return TRUE; 4208 } 4209 4210 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry 4211 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET 4212 is the offset of the associated .got.plt entry from 4213 _GLOBAL_OFFSET_TABLE_. */ 4214 4215 static void 4216 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info, 4217 bfd_vma plt_offset, bfd_vma plt_index, 4218 bfd_vma got_offset) 4219 { 4220 bfd_vma got_base; 4221 const bfd_vma *plt_entry; 4222 struct _bfd_sparc_elf_link_hash_table *htab; 4223 bfd_byte *loc; 4224 Elf_Internal_Rela rela; 4225 4226 htab = _bfd_sparc_elf_hash_table (info); 4227 BFD_ASSERT (htab != NULL); 4228 4229 if (info->shared) 4230 { 4231 plt_entry = sparc_vxworks_shared_plt_entry; 4232 got_base = 0; 4233 } 4234 else 4235 { 4236 plt_entry = sparc_vxworks_exec_plt_entry; 4237 got_base = (htab->elf.hgot->root.u.def.value 4238 + htab->elf.hgot->root.u.def.section->output_offset 4239 + htab->elf.hgot->root.u.def.section->output_section->vma); 4240 } 4241 4242 /* Fill in the entry in the procedure linkage table. */ 4243 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10), 4244 htab->elf.splt->contents + plt_offset); 4245 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff), 4246 htab->elf.splt->contents + plt_offset + 4); 4247 bfd_put_32 (output_bfd, plt_entry[2], 4248 htab->elf.splt->contents + plt_offset + 8); 4249 bfd_put_32 (output_bfd, plt_entry[3], 4250 htab->elf.splt->contents + plt_offset + 12); 4251 bfd_put_32 (output_bfd, plt_entry[4], 4252 htab->elf.splt->contents + plt_offset + 16); 4253 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10), 4254 htab->elf.splt->contents + plt_offset + 20); 4255 /* PC-relative displacement for a branch to the start of 4256 the PLT section. */ 4257 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2) 4258 & 0x003fffff), 4259 htab->elf.splt->contents + plt_offset + 24); 4260 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff), 4261 htab->elf.splt->contents + plt_offset + 28); 4262 4263 /* Fill in the .got.plt entry, pointing initially at the 4264 second half of the PLT entry. */ 4265 BFD_ASSERT (htab->elf.sgotplt != NULL); 4266 bfd_put_32 (output_bfd, 4267 htab->elf.splt->output_section->vma 4268 + htab->elf.splt->output_offset 4269 + plt_offset + 20, 4270 htab->elf.sgotplt->contents + got_offset); 4271 4272 /* Add relocations to .rela.plt.unloaded. */ 4273 if (!info->shared) 4274 { 4275 loc = (htab->srelplt2->contents 4276 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela)); 4277 4278 /* Relocate the initial sethi. */ 4279 rela.r_offset = (htab->elf.splt->output_section->vma 4280 + htab->elf.splt->output_offset 4281 + plt_offset); 4282 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); 4283 rela.r_addend = got_offset; 4284 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4285 loc += sizeof (Elf32_External_Rela); 4286 4287 /* Likewise the following or. */ 4288 rela.r_offset += 4; 4289 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); 4290 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4291 loc += sizeof (Elf32_External_Rela); 4292 4293 /* Relocate the .got.plt entry. */ 4294 rela.r_offset = (htab->elf.sgotplt->output_section->vma 4295 + htab->elf.sgotplt->output_offset 4296 + got_offset); 4297 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32); 4298 rela.r_addend = plt_offset + 20; 4299 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4300 } 4301 } 4302 4303 /* Finish up dynamic symbol handling. We set the contents of various 4304 dynamic sections here. */ 4305 4306 bfd_boolean 4307 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd, 4308 struct bfd_link_info *info, 4309 struct elf_link_hash_entry *h, 4310 Elf_Internal_Sym *sym) 4311 { 4312 struct _bfd_sparc_elf_link_hash_table *htab; 4313 const struct elf_backend_data *bed; 4314 4315 htab = _bfd_sparc_elf_hash_table (info); 4316 BFD_ASSERT (htab != NULL); 4317 bed = get_elf_backend_data (output_bfd); 4318 4319 if (h->plt.offset != (bfd_vma) -1) 4320 { 4321 asection *splt; 4322 asection *srela; 4323 Elf_Internal_Rela rela; 4324 bfd_byte *loc; 4325 bfd_vma r_offset, got_offset; 4326 int rela_index; 4327 4328 /* When building a static executable, use .iplt and 4329 .rela.iplt sections for STT_GNU_IFUNC symbols. */ 4330 if (htab->elf.splt != NULL) 4331 { 4332 splt = htab->elf.splt; 4333 srela = htab->elf.srelplt; 4334 } 4335 else 4336 { 4337 splt = htab->elf.iplt; 4338 srela = htab->elf.irelplt; 4339 } 4340 4341 if (splt == NULL || srela == NULL) 4342 abort (); 4343 4344 /* Fill in the entry in the .rela.plt section. */ 4345 if (htab->is_vxworks) 4346 { 4347 /* Work out the index of this PLT entry. */ 4348 rela_index = ((h->plt.offset - htab->plt_header_size) 4349 / htab->plt_entry_size); 4350 4351 /* Calculate the offset of the associated .got.plt entry. 4352 The first three entries are reserved. */ 4353 got_offset = (rela_index + 3) * 4; 4354 4355 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset, 4356 rela_index, got_offset); 4357 4358 4359 /* On VxWorks, the relocation points to the .got.plt entry, 4360 not the .plt entry. */ 4361 rela.r_offset = (htab->elf.sgotplt->output_section->vma 4362 + htab->elf.sgotplt->output_offset 4363 + got_offset); 4364 rela.r_addend = 0; 4365 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, 4366 R_SPARC_JMP_SLOT); 4367 } 4368 else 4369 { 4370 bfd_boolean ifunc = FALSE; 4371 4372 /* Fill in the entry in the procedure linkage table. */ 4373 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt, 4374 h->plt.offset, splt->size, 4375 &r_offset); 4376 4377 if (h == NULL 4378 || h->dynindx == -1 4379 || ((info->executable 4380 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 4381 && h->def_regular 4382 && h->type == STT_GNU_IFUNC)) 4383 { 4384 ifunc = TRUE; 4385 BFD_ASSERT (h == NULL 4386 || (h->type == STT_GNU_IFUNC 4387 && h->def_regular 4388 && (h->root.type == bfd_link_hash_defined 4389 || h->root.type == bfd_link_hash_defweak))); 4390 } 4391 4392 rela.r_offset = r_offset 4393 + (splt->output_section->vma + splt->output_offset); 4394 if (ABI_64_P (output_bfd) 4395 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) 4396 { 4397 if (ifunc) 4398 { 4399 rela.r_addend = (h->root.u.def.section->output_section->vma 4400 + h->root.u.def.section->output_offset 4401 + h->root.u.def.value); 4402 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, 4403 R_SPARC_IRELATIVE); 4404 } 4405 else 4406 { 4407 rela.r_addend = (-(h->plt.offset + 4) 4408 - splt->output_section->vma 4409 - splt->output_offset); 4410 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, 4411 R_SPARC_JMP_SLOT); 4412 } 4413 } 4414 else 4415 { 4416 if (ifunc) 4417 { 4418 rela.r_addend = (h->root.u.def.section->output_section->vma 4419 + h->root.u.def.section->output_offset 4420 + h->root.u.def.value); 4421 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, 4422 R_SPARC_JMP_IREL); 4423 } 4424 else 4425 { 4426 rela.r_addend = 0; 4427 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, 4428 R_SPARC_JMP_SLOT); 4429 } 4430 } 4431 } 4432 4433 /* Adjust for the first 4 reserved elements in the .plt section 4434 when setting the offset in the .rela.plt section. 4435 Sun forgot to read their own ABI and copied elf32-sparc behaviour, 4436 thus .plt[4] has corresponding .rela.plt[0] and so on. */ 4437 4438 loc = srela->contents; 4439 loc += rela_index * bed->s->sizeof_rela; 4440 bed->s->swap_reloca_out (output_bfd, &rela, loc); 4441 4442 if (!h->def_regular) 4443 { 4444 /* Mark the symbol as undefined, rather than as defined in 4445 the .plt section. Leave the value alone. */ 4446 sym->st_shndx = SHN_UNDEF; 4447 /* If the symbol is weak, we do need to clear the value. 4448 Otherwise, the PLT entry would provide a definition for 4449 the symbol even if the symbol wasn't defined anywhere, 4450 and so the symbol would never be NULL. */ 4451 if (!h->ref_regular_nonweak) 4452 sym->st_value = 0; 4453 } 4454 } 4455 4456 if (h->got.offset != (bfd_vma) -1 4457 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD 4458 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 4459 { 4460 asection *sgot; 4461 asection *srela; 4462 Elf_Internal_Rela rela; 4463 4464 /* This symbol has an entry in the GOT. Set it up. */ 4465 4466 sgot = htab->elf.sgot; 4467 srela = htab->elf.srelgot; 4468 BFD_ASSERT (sgot != NULL && srela != NULL); 4469 4470 rela.r_offset = (sgot->output_section->vma 4471 + sgot->output_offset 4472 + (h->got.offset &~ (bfd_vma) 1)); 4473 4474 /* If this is a -Bsymbolic link, and the symbol is defined 4475 locally, we just want to emit a RELATIVE reloc. Likewise if 4476 the symbol was forced to be local because of a version file. 4477 The entry in the global offset table will already have been 4478 initialized in the relocate_section function. */ 4479 if (! info->shared 4480 && h->type == STT_GNU_IFUNC 4481 && h->def_regular) 4482 { 4483 asection *plt; 4484 4485 /* We load the GOT entry with the PLT entry. */ 4486 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; 4487 SPARC_ELF_PUT_WORD (htab, output_bfd, 4488 (plt->output_section->vma 4489 + plt->output_offset + h->plt.offset), 4490 htab->elf.sgot->contents 4491 + (h->got.offset & ~(bfd_vma) 1)); 4492 return TRUE; 4493 } 4494 else if (info->shared 4495 && SYMBOL_REFERENCES_LOCAL (info, h)) 4496 { 4497 asection *sec = h->root.u.def.section; 4498 if (h->type == STT_GNU_IFUNC) 4499 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE); 4500 else 4501 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE); 4502 rela.r_addend = (h->root.u.def.value 4503 + sec->output_section->vma 4504 + sec->output_offset); 4505 } 4506 else 4507 { 4508 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT); 4509 rela.r_addend = 0; 4510 } 4511 4512 SPARC_ELF_PUT_WORD (htab, output_bfd, 0, 4513 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4514 sparc_elf_append_rela (output_bfd, srela, &rela); 4515 } 4516 4517 if (h->needs_copy) 4518 { 4519 asection *s; 4520 Elf_Internal_Rela rela; 4521 4522 /* This symbols needs a copy reloc. Set it up. */ 4523 BFD_ASSERT (h->dynindx != -1); 4524 4525 s = bfd_get_linker_section (h->root.u.def.section->owner, 4526 ".rela.bss"); 4527 BFD_ASSERT (s != NULL); 4528 4529 rela.r_offset = (h->root.u.def.value 4530 + h->root.u.def.section->output_section->vma 4531 + h->root.u.def.section->output_offset); 4532 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY); 4533 rela.r_addend = 0; 4534 sparc_elf_append_rela (output_bfd, s, &rela); 4535 } 4536 4537 /* Mark some specially defined symbols as absolute. On VxWorks, 4538 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the 4539 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */ 4540 if (sym != NULL 4541 && (h == htab->elf.hdynamic 4542 || (!htab->is_vxworks 4543 && (h == htab->elf.hgot || h == htab->elf.hplt)))) 4544 sym->st_shndx = SHN_ABS; 4545 4546 return TRUE; 4547 } 4548 4549 /* Finish up the dynamic sections. */ 4550 4551 static bfd_boolean 4552 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4553 bfd *dynobj, asection *sdyn, 4554 asection *splt ATTRIBUTE_UNUSED) 4555 { 4556 struct _bfd_sparc_elf_link_hash_table *htab; 4557 const struct elf_backend_data *bed; 4558 bfd_byte *dyncon, *dynconend; 4559 size_t dynsize; 4560 int stt_regidx = -1; 4561 bfd_boolean abi_64_p; 4562 4563 htab = _bfd_sparc_elf_hash_table (info); 4564 BFD_ASSERT (htab != NULL); 4565 bed = get_elf_backend_data (output_bfd); 4566 dynsize = bed->s->sizeof_dyn; 4567 dynconend = sdyn->contents + sdyn->size; 4568 abi_64_p = ABI_64_P (output_bfd); 4569 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4570 { 4571 Elf_Internal_Dyn dyn; 4572 const char *name; 4573 bfd_boolean size; 4574 4575 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4576 4577 if (htab->is_vxworks && dyn.d_tag == DT_RELASZ) 4578 { 4579 /* On VxWorks, DT_RELASZ should not include the relocations 4580 in .rela.plt. */ 4581 if (htab->elf.srelplt) 4582 { 4583 dyn.d_un.d_val -= htab->elf.srelplt->size; 4584 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4585 } 4586 } 4587 else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT) 4588 { 4589 /* On VxWorks, DT_PLTGOT should point to the start of the GOT, 4590 not to the start of the PLT. */ 4591 if (htab->elf.sgotplt) 4592 { 4593 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma 4594 + htab->elf.sgotplt->output_offset); 4595 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4596 } 4597 } 4598 else if (htab->is_vxworks 4599 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) 4600 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4601 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER) 4602 { 4603 if (stt_regidx == -1) 4604 { 4605 stt_regidx = 4606 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); 4607 if (stt_regidx == -1) 4608 return FALSE; 4609 } 4610 dyn.d_un.d_val = stt_regidx++; 4611 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4612 } 4613 else 4614 { 4615 switch (dyn.d_tag) 4616 { 4617 case DT_PLTGOT: name = ".plt"; size = FALSE; break; 4618 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; 4619 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; 4620 default: name = NULL; size = FALSE; break; 4621 } 4622 4623 if (name != NULL) 4624 { 4625 asection *s; 4626 4627 s = bfd_get_section_by_name (output_bfd, name); 4628 if (s == NULL) 4629 dyn.d_un.d_val = 0; 4630 else 4631 { 4632 if (! size) 4633 dyn.d_un.d_ptr = s->vma; 4634 else 4635 dyn.d_un.d_val = s->size; 4636 } 4637 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4638 } 4639 } 4640 } 4641 return TRUE; 4642 } 4643 4644 /* Install the first PLT entry in a VxWorks executable and make sure that 4645 .rela.plt.unloaded relocations have the correct symbol indexes. */ 4646 4647 static void 4648 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) 4649 { 4650 struct _bfd_sparc_elf_link_hash_table *htab; 4651 Elf_Internal_Rela rela; 4652 bfd_vma got_base; 4653 bfd_byte *loc; 4654 4655 htab = _bfd_sparc_elf_hash_table (info); 4656 BFD_ASSERT (htab != NULL); 4657 4658 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */ 4659 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma 4660 + htab->elf.hgot->root.u.def.section->output_offset 4661 + htab->elf.hgot->root.u.def.value); 4662 4663 /* Install the initial PLT entry. */ 4664 bfd_put_32 (output_bfd, 4665 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10), 4666 htab->elf.splt->contents); 4667 bfd_put_32 (output_bfd, 4668 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff), 4669 htab->elf.splt->contents + 4); 4670 bfd_put_32 (output_bfd, 4671 sparc_vxworks_exec_plt0_entry[2], 4672 htab->elf.splt->contents + 8); 4673 bfd_put_32 (output_bfd, 4674 sparc_vxworks_exec_plt0_entry[3], 4675 htab->elf.splt->contents + 12); 4676 bfd_put_32 (output_bfd, 4677 sparc_vxworks_exec_plt0_entry[4], 4678 htab->elf.splt->contents + 16); 4679 4680 loc = htab->srelplt2->contents; 4681 4682 /* Add an unloaded relocation for the initial entry's "sethi". */ 4683 rela.r_offset = (htab->elf.splt->output_section->vma 4684 + htab->elf.splt->output_offset); 4685 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); 4686 rela.r_addend = 8; 4687 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4688 loc += sizeof (Elf32_External_Rela); 4689 4690 /* Likewise the following "or". */ 4691 rela.r_offset += 4; 4692 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); 4693 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4694 loc += sizeof (Elf32_External_Rela); 4695 4696 /* Fix up the remaining .rela.plt.unloaded relocations. They may have 4697 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order 4698 in which symbols were output. */ 4699 while (loc < htab->srelplt2->contents + htab->srelplt2->size) 4700 { 4701 Elf_Internal_Rela rel; 4702 4703 /* The entry's initial "sethi" (against _G_O_T_). */ 4704 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); 4705 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); 4706 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); 4707 loc += sizeof (Elf32_External_Rela); 4708 4709 /* The following "or" (also against _G_O_T_). */ 4710 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); 4711 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); 4712 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); 4713 loc += sizeof (Elf32_External_Rela); 4714 4715 /* The .got.plt entry (against _P_L_T_). */ 4716 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); 4717 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32); 4718 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); 4719 loc += sizeof (Elf32_External_Rela); 4720 } 4721 } 4722 4723 /* Install the first PLT entry in a VxWorks shared object. */ 4724 4725 static void 4726 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) 4727 { 4728 struct _bfd_sparc_elf_link_hash_table *htab; 4729 unsigned int i; 4730 4731 htab = _bfd_sparc_elf_hash_table (info); 4732 BFD_ASSERT (htab != NULL); 4733 4734 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++) 4735 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i], 4736 htab->elf.splt->contents + i * 4); 4737 } 4738 4739 /* Finish up local dynamic symbol handling. We set the contents of 4740 various dynamic sections here. */ 4741 4742 static bfd_boolean 4743 finish_local_dynamic_symbol (void **slot, void *inf) 4744 { 4745 struct elf_link_hash_entry *h 4746 = (struct elf_link_hash_entry *) *slot; 4747 struct bfd_link_info *info 4748 = (struct bfd_link_info *) inf; 4749 4750 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info, 4751 h, NULL); 4752 } 4753 4754 bfd_boolean 4755 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4756 { 4757 bfd *dynobj; 4758 asection *sdyn; 4759 struct _bfd_sparc_elf_link_hash_table *htab; 4760 4761 htab = _bfd_sparc_elf_hash_table (info); 4762 BFD_ASSERT (htab != NULL); 4763 dynobj = htab->elf.dynobj; 4764 4765 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4766 4767 if (elf_hash_table (info)->dynamic_sections_created) 4768 { 4769 asection *splt; 4770 4771 splt = htab->elf.splt; 4772 BFD_ASSERT (splt != NULL && sdyn != NULL); 4773 4774 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt)) 4775 return FALSE; 4776 4777 /* Initialize the contents of the .plt section. */ 4778 if (splt->size > 0) 4779 { 4780 if (htab->is_vxworks) 4781 { 4782 if (info->shared) 4783 sparc_vxworks_finish_shared_plt (output_bfd, info); 4784 else 4785 sparc_vxworks_finish_exec_plt (output_bfd, info); 4786 } 4787 else 4788 { 4789 memset (splt->contents, 0, htab->plt_header_size); 4790 if (!ABI_64_P (output_bfd)) 4791 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, 4792 splt->contents + splt->size - 4); 4793 } 4794 } 4795 4796 if (elf_section_data (splt->output_section) != NULL) 4797 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4798 = ((htab->is_vxworks || !ABI_64_P (output_bfd)) 4799 ? 0 : htab->plt_entry_size); 4800 } 4801 4802 /* Set the first entry in the global offset table to the address of 4803 the dynamic section. */ 4804 if (htab->elf.sgot && htab->elf.sgot->size > 0) 4805 { 4806 bfd_vma val = (sdyn ? 4807 sdyn->output_section->vma + sdyn->output_offset : 4808 0); 4809 4810 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents); 4811 } 4812 4813 if (htab->elf.sgot) 4814 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4815 SPARC_ELF_WORD_BYTES (htab); 4816 4817 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ 4818 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info); 4819 4820 return TRUE; 4821 } 4822 4823 4824 /* Set the right machine number for a SPARC ELF file. */ 4825 4826 bfd_boolean 4827 _bfd_sparc_elf_object_p (bfd *abfd) 4828 { 4829 if (ABI_64_P (abfd)) 4830 { 4831 unsigned long mach = bfd_mach_sparc_v9; 4832 4833 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 4834 mach = bfd_mach_sparc_v9b; 4835 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 4836 mach = bfd_mach_sparc_v9a; 4837 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); 4838 } 4839 else 4840 { 4841 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) 4842 { 4843 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 4844 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4845 bfd_mach_sparc_v8plusb); 4846 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 4847 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4848 bfd_mach_sparc_v8plusa); 4849 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) 4850 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4851 bfd_mach_sparc_v8plus); 4852 else 4853 return FALSE; 4854 } 4855 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) 4856 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 4857 bfd_mach_sparc_sparclite_le); 4858 else 4859 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 4860 } 4861 } 4862 4863 /* Return address for Ith PLT stub in section PLT, for relocation REL 4864 or (bfd_vma) -1 if it should not be included. */ 4865 4866 bfd_vma 4867 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel) 4868 { 4869 if (ABI_64_P (plt->owner)) 4870 { 4871 bfd_vma j; 4872 4873 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE; 4874 if (i < PLT64_LARGE_THRESHOLD) 4875 return plt->vma + i * PLT64_ENTRY_SIZE; 4876 4877 j = (i - PLT64_LARGE_THRESHOLD) % 160; 4878 i -= j; 4879 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6; 4880 } 4881 else 4882 return rel->address; 4883 } 4884 4885 /* Merge backend specific data from an object file to the output 4886 object file when linking. */ 4887 4888 bfd_boolean 4889 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4890 { 4891 obj_attribute *in_attr, *in_attrs; 4892 obj_attribute *out_attr, *out_attrs; 4893 4894 if (!elf_known_obj_attributes_proc (obfd)[0].i) 4895 { 4896 /* This is the first object. Copy the attributes. */ 4897 _bfd_elf_copy_obj_attributes (ibfd, obfd); 4898 4899 /* Use the Tag_null value to indicate the attributes have been 4900 initialized. */ 4901 elf_known_obj_attributes_proc (obfd)[0].i = 1; 4902 4903 return TRUE; 4904 } 4905 4906 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; 4907 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; 4908 4909 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS]; 4910 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS]; 4911 4912 out_attr->i |= in_attr->i; 4913 out_attr->type = 1; 4914 4915 /* Merge Tag_compatibility attributes and any common GNU ones. */ 4916 _bfd_elf_merge_object_attributes (ibfd, obfd); 4917 4918 return TRUE; 4919 } 4920