| 1 | /* SPARC-specific support for ELF |
| 2 | Copyright 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | |
| 22 | /* This file handles functionality common to the different SPARC ABI's. */ |
| 23 | |
| 24 | #include "sysdep.h" |
| 25 | #include "bfd.h" |
| 26 | #include "bfdlink.h" |
| 27 | #include "libbfd.h" |
| 28 | #include "libiberty.h" |
| 29 | #include "elf-bfd.h" |
| 30 | #include "elf/sparc.h" |
| 31 | #include "opcode/sparc.h" |
| 32 | #include "elfxx-sparc.h" |
| 33 | #include "elf-vxworks.h" |
| 34 | |
| 35 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ |
| 36 | #define MINUS_ONE (~ (bfd_vma) 0) |
| 37 | |
| 38 | #define ABI_64_P(abfd) \ |
| 39 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
| 40 | |
| 41 | /* The relocation "howto" table. */ |
| 42 | |
| 43 | /* Utility for performing the standard initial work of an instruction |
| 44 | relocation. |
| 45 | *PRELOCATION will contain the relocated item. |
| 46 | *PINSN will contain the instruction from the input stream. |
| 47 | If the result is `bfd_reloc_other' the caller can continue with |
| 48 | performing the relocation. Otherwise it must stop and return the |
| 49 | value to its caller. */ |
| 50 | |
| 51 | static bfd_reloc_status_type |
| 52 | init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 53 | PTR data, asection *input_section, bfd *output_bfd, |
| 54 | bfd_vma *prelocation, bfd_vma *pinsn) |
| 55 | { |
| 56 | bfd_vma relocation; |
| 57 | reloc_howto_type *howto = reloc_entry->howto; |
| 58 | |
| 59 | if (output_bfd != (bfd *) NULL |
| 60 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 61 | && (! howto->partial_inplace |
| 62 | || reloc_entry->addend == 0)) |
| 63 | { |
| 64 | reloc_entry->address += input_section->output_offset; |
| 65 | return bfd_reloc_ok; |
| 66 | } |
| 67 | |
| 68 | /* This works because partial_inplace is FALSE. */ |
| 69 | if (output_bfd != NULL) |
| 70 | return bfd_reloc_continue; |
| 71 | |
| 72 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 73 | return bfd_reloc_outofrange; |
| 74 | |
| 75 | relocation = (symbol->value |
| 76 | + symbol->section->output_section->vma |
| 77 | + symbol->section->output_offset); |
| 78 | relocation += reloc_entry->addend; |
| 79 | if (howto->pc_relative) |
| 80 | { |
| 81 | relocation -= (input_section->output_section->vma |
| 82 | + input_section->output_offset); |
| 83 | relocation -= reloc_entry->address; |
| 84 | } |
| 85 | |
| 86 | *prelocation = relocation; |
| 87 | *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 88 | return bfd_reloc_other; |
| 89 | } |
| 90 | |
| 91 | /* For unsupported relocs. */ |
| 92 | |
| 93 | static bfd_reloc_status_type |
| 94 | sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 95 | arelent *reloc_entry ATTRIBUTE_UNUSED, |
| 96 | asymbol *symbol ATTRIBUTE_UNUSED, |
| 97 | PTR data ATTRIBUTE_UNUSED, |
| 98 | asection *input_section ATTRIBUTE_UNUSED, |
| 99 | bfd *output_bfd ATTRIBUTE_UNUSED, |
| 100 | char **error_message ATTRIBUTE_UNUSED) |
| 101 | { |
| 102 | return bfd_reloc_notsupported; |
| 103 | } |
| 104 | |
| 105 | /* Handle the WDISP16 reloc. */ |
| 106 | |
| 107 | static bfd_reloc_status_type |
| 108 | sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 109 | PTR data, asection *input_section, bfd *output_bfd, |
| 110 | char **error_message ATTRIBUTE_UNUSED) |
| 111 | { |
| 112 | bfd_vma relocation; |
| 113 | bfd_vma insn; |
| 114 | bfd_reloc_status_type status; |
| 115 | |
| 116 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 117 | input_section, output_bfd, &relocation, &insn); |
| 118 | if (status != bfd_reloc_other) |
| 119 | return status; |
| 120 | |
| 121 | insn &= ~ (bfd_vma) 0x303fff; |
| 122 | insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff); |
| 123 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 124 | |
| 125 | if ((bfd_signed_vma) relocation < - 0x40000 |
| 126 | || (bfd_signed_vma) relocation > 0x3ffff) |
| 127 | return bfd_reloc_overflow; |
| 128 | else |
| 129 | return bfd_reloc_ok; |
| 130 | } |
| 131 | |
| 132 | /* Handle the HIX22 reloc. */ |
| 133 | |
| 134 | static bfd_reloc_status_type |
| 135 | sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 136 | PTR data, asection *input_section, bfd *output_bfd, |
| 137 | char **error_message ATTRIBUTE_UNUSED) |
| 138 | { |
| 139 | bfd_vma relocation; |
| 140 | bfd_vma insn; |
| 141 | bfd_reloc_status_type status; |
| 142 | |
| 143 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 144 | input_section, output_bfd, &relocation, &insn); |
| 145 | if (status != bfd_reloc_other) |
| 146 | return status; |
| 147 | |
| 148 | relocation ^= MINUS_ONE; |
| 149 | insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 150 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 151 | |
| 152 | if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) |
| 153 | return bfd_reloc_overflow; |
| 154 | else |
| 155 | return bfd_reloc_ok; |
| 156 | } |
| 157 | |
| 158 | /* Handle the LOX10 reloc. */ |
| 159 | |
| 160 | static bfd_reloc_status_type |
| 161 | sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 162 | PTR data, asection *input_section, bfd *output_bfd, |
| 163 | char **error_message ATTRIBUTE_UNUSED) |
| 164 | { |
| 165 | bfd_vma relocation; |
| 166 | bfd_vma insn; |
| 167 | bfd_reloc_status_type status; |
| 168 | |
| 169 | status = init_insn_reloc (abfd, reloc_entry, symbol, data, |
| 170 | input_section, output_bfd, &relocation, &insn); |
| 171 | if (status != bfd_reloc_other) |
| 172 | return status; |
| 173 | |
| 174 | insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); |
| 175 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 176 | |
| 177 | return bfd_reloc_ok; |
| 178 | } |
| 179 | |
| 180 | static reloc_howto_type _bfd_sparc_elf_howto_table[] = |
| 181 | { |
| 182 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 183 | HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), |
| 184 | HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), |
| 185 | HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), |
| 186 | HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), |
| 187 | HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), |
| 188 | HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), |
| 189 | HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), |
| 190 | HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), |
| 191 | HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), |
| 192 | HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), |
| 193 | HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), |
| 194 | HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), |
| 195 | HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), |
| 196 | HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), |
| 197 | HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), |
| 198 | HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), |
| 199 | HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), |
| 200 | HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), |
| 201 | HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), |
| 202 | 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), |
| 203 | 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), |
| 204 | HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), |
| 205 | HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), |
| 206 | HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), |
| 207 | HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), |
| 208 | HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), |
| 209 | HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), |
| 210 | HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), |
| 211 | HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), |
| 212 | HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), |
| 213 | HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), |
| 214 | HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE), |
| 215 | HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE), |
| 216 | HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE), |
| 217 | HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE), |
| 218 | HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE), |
| 219 | 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), |
| 220 | 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), |
| 221 | 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), |
| 222 | HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), |
| 223 | HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), |
| 224 | 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), |
| 225 | HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), |
| 226 | HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), |
| 227 | HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), |
| 228 | HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE), |
| 229 | HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE), |
| 230 | HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE), |
| 231 | HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE), |
| 232 | HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE), |
| 233 | HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE), |
| 234 | HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE), |
| 235 | HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE), |
| 236 | HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE), |
| 237 | HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), |
| 238 | 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), |
| 239 | 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), |
| 240 | 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), |
| 241 | 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), |
| 242 | 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), |
| 243 | 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), |
| 244 | 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), |
| 245 | 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), |
| 246 | 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), |
| 247 | 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), |
| 248 | 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), |
| 249 | 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), |
| 250 | 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), |
| 251 | 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), |
| 252 | 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), |
| 253 | 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), |
| 254 | 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), |
| 255 | 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), |
| 256 | 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), |
| 257 | 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), |
| 258 | 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), |
| 259 | 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), |
| 260 | 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), |
| 261 | 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), |
| 262 | 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), |
| 263 | 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), |
| 264 | 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), |
| 265 | 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), |
| 266 | 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), |
| 267 | }; |
| 268 | static reloc_howto_type sparc_vtinherit_howto = |
| 269 | HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
| 270 | static reloc_howto_type sparc_vtentry_howto = |
| 271 | 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); |
| 272 | static reloc_howto_type sparc_rev32_howto = |
| 273 | HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE); |
| 274 | |
| 275 | struct elf_reloc_map { |
| 276 | bfd_reloc_code_real_type bfd_reloc_val; |
| 277 | unsigned char elf_reloc_val; |
| 278 | }; |
| 279 | |
| 280 | static const struct elf_reloc_map sparc_reloc_map[] = |
| 281 | { |
| 282 | { BFD_RELOC_NONE, R_SPARC_NONE, }, |
| 283 | { BFD_RELOC_16, R_SPARC_16, }, |
| 284 | { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, |
| 285 | { BFD_RELOC_8, R_SPARC_8 }, |
| 286 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, |
| 287 | { BFD_RELOC_CTOR, R_SPARC_64 }, |
| 288 | { BFD_RELOC_32, R_SPARC_32 }, |
| 289 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, |
| 290 | { BFD_RELOC_HI22, R_SPARC_HI22 }, |
| 291 | { BFD_RELOC_LO10, R_SPARC_LO10, }, |
| 292 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, |
| 293 | { BFD_RELOC_64_PCREL, R_SPARC_DISP64 }, |
| 294 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
| 295 | { BFD_RELOC_SPARC13, R_SPARC_13 }, |
| 296 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, |
| 297 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, |
| 298 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, |
| 299 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, |
| 300 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, |
| 301 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, |
| 302 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, |
| 303 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, |
| 304 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, |
| 305 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, |
| 306 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, |
| 307 | { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, |
| 308 | { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, |
| 309 | { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, |
| 310 | { BFD_RELOC_SPARC_10, R_SPARC_10 }, |
| 311 | { BFD_RELOC_SPARC_11, R_SPARC_11 }, |
| 312 | { BFD_RELOC_SPARC_64, R_SPARC_64 }, |
| 313 | { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, |
| 314 | { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, |
| 315 | { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, |
| 316 | { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, |
| 317 | { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, |
| 318 | { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, |
| 319 | { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, |
| 320 | { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, |
| 321 | { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, |
| 322 | { BFD_RELOC_SPARC_7, R_SPARC_7 }, |
| 323 | { BFD_RELOC_SPARC_5, R_SPARC_5 }, |
| 324 | { BFD_RELOC_SPARC_6, R_SPARC_6 }, |
| 325 | { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 }, |
| 326 | { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 }, |
| 327 | { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 }, |
| 328 | { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD }, |
| 329 | { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL }, |
| 330 | { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 }, |
| 331 | { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 }, |
| 332 | { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD }, |
| 333 | { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL }, |
| 334 | { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 }, |
| 335 | { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 }, |
| 336 | { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD }, |
| 337 | { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 }, |
| 338 | { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 }, |
| 339 | { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD }, |
| 340 | { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX }, |
| 341 | { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD }, |
| 342 | { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 }, |
| 343 | { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 }, |
| 344 | { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 }, |
| 345 | { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 }, |
| 346 | { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 }, |
| 347 | { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 }, |
| 348 | { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 }, |
| 349 | { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 }, |
| 350 | { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, |
| 351 | { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 }, |
| 352 | { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 }, |
| 353 | { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 }, |
| 354 | { BFD_RELOC_SPARC_H44, R_SPARC_H44 }, |
| 355 | { BFD_RELOC_SPARC_M44, R_SPARC_M44 }, |
| 356 | { BFD_RELOC_SPARC_L44, R_SPARC_L44 }, |
| 357 | { BFD_RELOC_SPARC_GOTDATA_HIX22, R_SPARC_GOTDATA_HIX22 }, |
| 358 | { BFD_RELOC_SPARC_GOTDATA_LOX10, R_SPARC_GOTDATA_LOX10 }, |
| 359 | { BFD_RELOC_SPARC_GOTDATA_OP_HIX22, R_SPARC_GOTDATA_OP_HIX22 }, |
| 360 | { BFD_RELOC_SPARC_GOTDATA_OP_LOX10, R_SPARC_GOTDATA_OP_LOX10 }, |
| 361 | { BFD_RELOC_SPARC_GOTDATA_OP, R_SPARC_GOTDATA_OP }, |
| 362 | { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER }, |
| 363 | { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT }, |
| 364 | { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY }, |
| 365 | { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 }, |
| 366 | }; |
| 367 | |
| 368 | reloc_howto_type * |
| 369 | _bfd_sparc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 370 | bfd_reloc_code_real_type code) |
| 371 | { |
| 372 | unsigned int i; |
| 373 | |
| 374 | switch (code) |
| 375 | { |
| 376 | case BFD_RELOC_VTABLE_INHERIT: |
| 377 | return &sparc_vtinherit_howto; |
| 378 | |
| 379 | case BFD_RELOC_VTABLE_ENTRY: |
| 380 | return &sparc_vtentry_howto; |
| 381 | |
| 382 | case BFD_RELOC_SPARC_REV32: |
| 383 | return &sparc_rev32_howto; |
| 384 | |
| 385 | default: |
| 386 | for (i = 0; |
| 387 | i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); |
| 388 | i++) |
| 389 | { |
| 390 | if (sparc_reloc_map[i].bfd_reloc_val == code) |
| 391 | return (_bfd_sparc_elf_howto_table |
| 392 | + (int) sparc_reloc_map[i].elf_reloc_val); |
| 393 | } |
| 394 | } |
| 395 | bfd_set_error (bfd_error_bad_value); |
| 396 | return NULL; |
| 397 | } |
| 398 | |
| 399 | reloc_howto_type * |
| 400 | _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 401 | const char *r_name) |
| 402 | { |
| 403 | unsigned int i; |
| 404 | |
| 405 | for (i = 0; |
| 406 | i < (sizeof (_bfd_sparc_elf_howto_table) |
| 407 | / sizeof (_bfd_sparc_elf_howto_table[0])); |
| 408 | i++) |
| 409 | if (_bfd_sparc_elf_howto_table[i].name != NULL |
| 410 | && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0) |
| 411 | return &_bfd_sparc_elf_howto_table[i]; |
| 412 | |
| 413 | if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0) |
| 414 | return &sparc_vtinherit_howto; |
| 415 | if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0) |
| 416 | return &sparc_vtentry_howto; |
| 417 | if (strcasecmp (sparc_rev32_howto.name, r_name) == 0) |
| 418 | return &sparc_rev32_howto; |
| 419 | |
| 420 | return NULL; |
| 421 | } |
| 422 | |
| 423 | reloc_howto_type * |
| 424 | _bfd_sparc_elf_info_to_howto_ptr (unsigned int r_type) |
| 425 | { |
| 426 | switch (r_type) |
| 427 | { |
| 428 | case R_SPARC_GNU_VTINHERIT: |
| 429 | return &sparc_vtinherit_howto; |
| 430 | |
| 431 | case R_SPARC_GNU_VTENTRY: |
| 432 | return &sparc_vtentry_howto; |
| 433 | |
| 434 | case R_SPARC_REV32: |
| 435 | return &sparc_rev32_howto; |
| 436 | |
| 437 | default: |
| 438 | if (r_type >= (unsigned int) R_SPARC_max_std) |
| 439 | { |
| 440 | (*_bfd_error_handler) (_("invalid relocation type %d"), |
| 441 | (int) r_type); |
| 442 | r_type = R_SPARC_NONE; |
| 443 | } |
| 444 | return &_bfd_sparc_elf_howto_table[r_type]; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /* Both 32-bit and 64-bit sparc encode this in an identical manner, |
| 449 | so just take advantage of that. */ |
| 450 | #define SPARC_ELF_R_TYPE(r_info) \ |
| 451 | ((r_info) & 0xff) |
| 452 | |
| 453 | void |
| 454 | _bfd_sparc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 455 | Elf_Internal_Rela *dst) |
| 456 | { |
| 457 | unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info); |
| 458 | |
| 459 | cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type); |
| 460 | } |
| 461 | \f |
| 462 | |
| 463 | /* The nop opcode we use. */ |
| 464 | #define SPARC_NOP 0x01000000 |
| 465 | |
| 466 | #define SPARC_INSN_BYTES 4 |
| 467 | |
| 468 | /* The SPARC linker needs to keep track of the number of relocs that it |
| 469 | decides to copy as dynamic relocs in check_relocs for each symbol. |
| 470 | This is so that it can later discard them if they are found to be |
| 471 | unnecessary. We store the information in a field extending the |
| 472 | regular ELF linker hash table. */ |
| 473 | |
| 474 | struct _bfd_sparc_elf_dyn_relocs |
| 475 | { |
| 476 | struct _bfd_sparc_elf_dyn_relocs *next; |
| 477 | |
| 478 | /* The input section of the reloc. */ |
| 479 | asection *sec; |
| 480 | |
| 481 | /* Total number of relocs copied for the input section. */ |
| 482 | bfd_size_type count; |
| 483 | |
| 484 | /* Number of pc-relative relocs copied for the input section. */ |
| 485 | bfd_size_type pc_count; |
| 486 | }; |
| 487 | |
| 488 | /* SPARC ELF linker hash entry. */ |
| 489 | |
| 490 | struct _bfd_sparc_elf_link_hash_entry |
| 491 | { |
| 492 | struct elf_link_hash_entry elf; |
| 493 | |
| 494 | /* Track dynamic relocs copied for this symbol. */ |
| 495 | struct _bfd_sparc_elf_dyn_relocs *dyn_relocs; |
| 496 | |
| 497 | #define GOT_UNKNOWN 0 |
| 498 | #define GOT_NORMAL 1 |
| 499 | #define GOT_TLS_GD 2 |
| 500 | #define GOT_TLS_IE 3 |
| 501 | unsigned char tls_type; |
| 502 | }; |
| 503 | |
| 504 | #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent)) |
| 505 | |
| 506 | struct _bfd_sparc_elf_obj_tdata |
| 507 | { |
| 508 | struct elf_obj_tdata root; |
| 509 | |
| 510 | /* tls_type for each local got entry. */ |
| 511 | char *local_got_tls_type; |
| 512 | |
| 513 | /* TRUE if TLS GD relocs has been seen for this object. */ |
| 514 | bfd_boolean has_tlsgd; |
| 515 | }; |
| 516 | |
| 517 | #define _bfd_sparc_elf_tdata(abfd) \ |
| 518 | ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any) |
| 519 | |
| 520 | #define _bfd_sparc_elf_local_got_tls_type(abfd) \ |
| 521 | (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type) |
| 522 | |
| 523 | #define is_sparc_elf(bfd) \ |
| 524 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ |
| 525 | && elf_tdata (bfd) != NULL \ |
| 526 | && elf_object_id (bfd) == SPARC_ELF_TDATA) |
| 527 | |
| 528 | bfd_boolean |
| 529 | _bfd_sparc_elf_mkobject (bfd *abfd) |
| 530 | { |
| 531 | return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata), |
| 532 | SPARC_ELF_TDATA); |
| 533 | } |
| 534 | |
| 535 | static void |
| 536 | sparc_put_word_32 (bfd *bfd, bfd_vma val, void *ptr) |
| 537 | { |
| 538 | bfd_put_32 (bfd, val, ptr); |
| 539 | } |
| 540 | |
| 541 | static void |
| 542 | sparc_put_word_64 (bfd *bfd, bfd_vma val, void *ptr) |
| 543 | { |
| 544 | bfd_put_64 (bfd, val, ptr); |
| 545 | } |
| 546 | |
| 547 | static void |
| 548 | sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) |
| 549 | { |
| 550 | const struct elf_backend_data *bed; |
| 551 | bfd_byte *loc; |
| 552 | |
| 553 | bed = get_elf_backend_data (abfd); |
| 554 | loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); |
| 555 | bed->s->swap_reloca_out (abfd, rel, loc); |
| 556 | } |
| 557 | |
| 558 | static bfd_vma |
| 559 | sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, |
| 560 | bfd_vma index ATTRIBUTE_UNUSED, |
| 561 | bfd_vma type ATTRIBUTE_UNUSED) |
| 562 | { |
| 563 | return ELF64_R_INFO (index, |
| 564 | (in_rel ? |
| 565 | ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info), |
| 566 | type) : type)); |
| 567 | } |
| 568 | |
| 569 | static bfd_vma |
| 570 | sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, |
| 571 | bfd_vma index, bfd_vma type) |
| 572 | { |
| 573 | return ELF32_R_INFO (index, type); |
| 574 | } |
| 575 | |
| 576 | static bfd_vma |
| 577 | sparc_elf_r_symndx_64 (bfd_vma r_info) |
| 578 | { |
| 579 | bfd_vma r_symndx = ELF32_R_SYM (r_info); |
| 580 | return (r_symndx >> 24); |
| 581 | } |
| 582 | |
| 583 | static bfd_vma |
| 584 | sparc_elf_r_symndx_32 (bfd_vma r_info) |
| 585 | { |
| 586 | return ELF32_R_SYM (r_info); |
| 587 | } |
| 588 | |
| 589 | /* PLT/GOT stuff */ |
| 590 | |
| 591 | #define PLT32_ENTRY_SIZE 12 |
| 592 | #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE) |
| 593 | |
| 594 | /* The first four entries in a 32-bit procedure linkage table are reserved, |
| 595 | and the initial contents are unimportant (we zero them out). |
| 596 | Subsequent entries look like this. See the SVR4 ABI SPARC |
| 597 | supplement to see how this works. */ |
| 598 | |
| 599 | /* sethi %hi(.-.plt0),%g1. We fill in the address later. */ |
| 600 | #define PLT32_ENTRY_WORD0 0x03000000 |
| 601 | /* b,a .plt0. We fill in the offset later. */ |
| 602 | #define PLT32_ENTRY_WORD1 0x30800000 |
| 603 | /* nop. */ |
| 604 | #define PLT32_ENTRY_WORD2 SPARC_NOP |
| 605 | |
| 606 | static int |
| 607 | sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset, |
| 608 | bfd_vma max ATTRIBUTE_UNUSED, |
| 609 | bfd_vma *r_offset) |
| 610 | { |
| 611 | bfd_put_32 (output_bfd, |
| 612 | PLT32_ENTRY_WORD0 + offset, |
| 613 | splt->contents + offset); |
| 614 | bfd_put_32 (output_bfd, |
| 615 | (PLT32_ENTRY_WORD1 |
| 616 | + (((- (offset + 4)) >> 2) & 0x3fffff)), |
| 617 | splt->contents + offset + 4); |
| 618 | bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2, |
| 619 | splt->contents + offset + 8); |
| 620 | |
| 621 | *r_offset = offset; |
| 622 | |
| 623 | return offset / PLT32_ENTRY_SIZE - 4; |
| 624 | } |
| 625 | |
| 626 | /* Both the headers and the entries are icache aligned. */ |
| 627 | #define PLT64_ENTRY_SIZE 32 |
| 628 | #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE) |
| 629 | #define PLT64_LARGE_THRESHOLD 32768 |
| 630 | |
| 631 | static int |
| 632 | sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset, |
| 633 | bfd_vma max, bfd_vma *r_offset) |
| 634 | { |
| 635 | unsigned char *entry = splt->contents + offset; |
| 636 | const unsigned int nop = SPARC_NOP; |
| 637 | int index; |
| 638 | |
| 639 | if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) |
| 640 | { |
| 641 | unsigned int sethi, ba; |
| 642 | |
| 643 | *r_offset = offset; |
| 644 | |
| 645 | index = (offset / PLT64_ENTRY_SIZE); |
| 646 | |
| 647 | sethi = 0x03000000 | (index * PLT64_ENTRY_SIZE); |
| 648 | ba = 0x30680000 |
| 649 | | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff); |
| 650 | |
| 651 | bfd_put_32 (output_bfd, (bfd_vma) sethi, entry); |
| 652 | bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4); |
| 653 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); |
| 654 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12); |
| 655 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16); |
| 656 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20); |
| 657 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24); |
| 658 | bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28); |
| 659 | } |
| 660 | else |
| 661 | { |
| 662 | unsigned char *ptr; |
| 663 | unsigned int ldx; |
| 664 | int block, last_block, ofs, last_ofs, chunks_this_block; |
| 665 | const int insn_chunk_size = (6 * 4); |
| 666 | const int ptr_chunk_size = (1 * 8); |
| 667 | const int entries_per_block = 160; |
| 668 | const int block_size = entries_per_block * (insn_chunk_size |
| 669 | + ptr_chunk_size); |
| 670 | |
| 671 | /* Entries 32768 and higher are grouped into blocks of 160. |
| 672 | The blocks are further subdivided into 160 sequences of |
| 673 | 6 instructions and 160 pointers. If a block does not require |
| 674 | the full 160 entries, let's say it requires N, then there |
| 675 | will be N sequences of 6 instructions and N pointers. */ |
| 676 | |
| 677 | offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE); |
| 678 | max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE); |
| 679 | |
| 680 | block = offset / block_size; |
| 681 | last_block = max / block_size; |
| 682 | if (block != last_block) |
| 683 | { |
| 684 | chunks_this_block = 160; |
| 685 | } |
| 686 | else |
| 687 | { |
| 688 | last_ofs = max % block_size; |
| 689 | chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size); |
| 690 | } |
| 691 | |
| 692 | ofs = offset % block_size; |
| 693 | |
| 694 | index = (PLT64_LARGE_THRESHOLD + |
| 695 | (block * 160) + |
| 696 | (ofs / insn_chunk_size)); |
| 697 | |
| 698 | ptr = splt->contents |
| 699 | + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) |
| 700 | + (block * block_size) |
| 701 | + (chunks_this_block * insn_chunk_size) |
| 702 | + (ofs / insn_chunk_size) * ptr_chunk_size; |
| 703 | |
| 704 | *r_offset = (bfd_vma) (ptr - splt->contents); |
| 705 | |
| 706 | ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff); |
| 707 | |
| 708 | /* mov %o7,%g5 |
| 709 | call .+8 |
| 710 | nop |
| 711 | ldx [%o7+P],%g1 |
| 712 | jmpl %o7+%g1,%g1 |
| 713 | mov %g5,%o7 */ |
| 714 | bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry); |
| 715 | bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4); |
| 716 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8); |
| 717 | bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12); |
| 718 | bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16); |
| 719 | bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20); |
| 720 | |
| 721 | bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr); |
| 722 | } |
| 723 | |
| 724 | return index - 4; |
| 725 | } |
| 726 | |
| 727 | /* The format of the first PLT entry in a VxWorks executable. */ |
| 728 | static const bfd_vma sparc_vxworks_exec_plt0_entry[] = |
| 729 | { |
| 730 | 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */ |
| 731 | 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */ |
| 732 | 0xc4008000, /* ld [ %g2 ], %g2 */ |
| 733 | 0x81c08000, /* jmp %g2 */ |
| 734 | 0x01000000 /* nop */ |
| 735 | }; |
| 736 | |
| 737 | /* The format of subsequent PLT entries. */ |
| 738 | static const bfd_vma sparc_vxworks_exec_plt_entry[] = |
| 739 | { |
| 740 | 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */ |
| 741 | 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */ |
| 742 | 0xc2004000, /* ld [ %g1 ], %g1 */ |
| 743 | 0x81c04000, /* jmp %g1 */ |
| 744 | 0x01000000, /* nop */ |
| 745 | 0x03000000, /* sethi %hi(f@pltindex), %g1 */ |
| 746 | 0x10800000, /* b _PLT_resolve */ |
| 747 | 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */ |
| 748 | }; |
| 749 | |
| 750 | /* The format of the first PLT entry in a VxWorks shared object. */ |
| 751 | static const bfd_vma sparc_vxworks_shared_plt0_entry[] = |
| 752 | { |
| 753 | 0xc405e008, /* ld [ %l7 + 8 ], %g2 */ |
| 754 | 0x81c08000, /* jmp %g2 */ |
| 755 | 0x01000000 /* nop */ |
| 756 | }; |
| 757 | |
| 758 | /* The format of subsequent PLT entries. */ |
| 759 | static const bfd_vma sparc_vxworks_shared_plt_entry[] = |
| 760 | { |
| 761 | 0x03000000, /* sethi %hi(f@got), %g1 */ |
| 762 | 0x82106000, /* or %g1, %lo(f@got), %g1 */ |
| 763 | 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */ |
| 764 | 0x81c04000, /* jmp %g1 */ |
| 765 | 0x01000000, /* nop */ |
| 766 | 0x03000000, /* sethi %hi(f@pltindex), %g1 */ |
| 767 | 0x10800000, /* b _PLT_resolve */ |
| 768 | 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */ |
| 769 | }; |
| 770 | |
| 771 | #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \ |
| 772 | htab->put_word(bfd, val, ptr) |
| 773 | |
| 774 | #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \ |
| 775 | htab->r_info(in_rel, index, type) |
| 776 | |
| 777 | #define SPARC_ELF_R_SYMNDX(htab, r_info) \ |
| 778 | htab->r_symndx(r_info) |
| 779 | |
| 780 | #define SPARC_ELF_WORD_BYTES(htab) \ |
| 781 | htab->bytes_per_word |
| 782 | |
| 783 | #define SPARC_ELF_RELA_BYTES(htab) \ |
| 784 | htab->bytes_per_rela |
| 785 | |
| 786 | #define SPARC_ELF_DTPOFF_RELOC(htab) \ |
| 787 | htab->dtpoff_reloc |
| 788 | |
| 789 | #define SPARC_ELF_DTPMOD_RELOC(htab) \ |
| 790 | htab->dtpmod_reloc |
| 791 | |
| 792 | #define SPARC_ELF_TPOFF_RELOC(htab) \ |
| 793 | htab->tpoff_reloc |
| 794 | |
| 795 | #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \ |
| 796 | htab->build_plt_entry (obfd, splt, off, max, r_off) |
| 797 | |
| 798 | /* Create an entry in an SPARC ELF linker hash table. */ |
| 799 | |
| 800 | static struct bfd_hash_entry * |
| 801 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 802 | struct bfd_hash_table *table, const char *string) |
| 803 | { |
| 804 | /* Allocate the structure if it has not already been allocated by a |
| 805 | subclass. */ |
| 806 | if (entry == NULL) |
| 807 | { |
| 808 | entry = bfd_hash_allocate (table, |
| 809 | sizeof (struct _bfd_sparc_elf_link_hash_entry)); |
| 810 | if (entry == NULL) |
| 811 | return entry; |
| 812 | } |
| 813 | |
| 814 | /* Call the allocation method of the superclass. */ |
| 815 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
| 816 | if (entry != NULL) |
| 817 | { |
| 818 | struct _bfd_sparc_elf_link_hash_entry *eh; |
| 819 | |
| 820 | eh = (struct _bfd_sparc_elf_link_hash_entry *) entry; |
| 821 | eh->dyn_relocs = NULL; |
| 822 | eh->tls_type = GOT_UNKNOWN; |
| 823 | } |
| 824 | |
| 825 | return entry; |
| 826 | } |
| 827 | |
| 828 | /* The name of the dynamic interpreter. This is put in the .interp |
| 829 | section. */ |
| 830 | |
| 831 | #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
| 832 | #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" |
| 833 | |
| 834 | /* Create a SPARC ELF linker hash table. */ |
| 835 | |
| 836 | struct bfd_link_hash_table * |
| 837 | _bfd_sparc_elf_link_hash_table_create (bfd *abfd) |
| 838 | { |
| 839 | struct _bfd_sparc_elf_link_hash_table *ret; |
| 840 | bfd_size_type amt = sizeof (struct _bfd_sparc_elf_link_hash_table); |
| 841 | |
| 842 | ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt); |
| 843 | if (ret == NULL) |
| 844 | return NULL; |
| 845 | |
| 846 | if (ABI_64_P (abfd)) |
| 847 | { |
| 848 | ret->put_word = sparc_put_word_64; |
| 849 | ret->r_info = sparc_elf_r_info_64; |
| 850 | ret->r_symndx = sparc_elf_r_symndx_64; |
| 851 | ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64; |
| 852 | ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64; |
| 853 | ret->tpoff_reloc = R_SPARC_TLS_TPOFF64; |
| 854 | ret->word_align_power = 3; |
| 855 | ret->align_power_max = 4; |
| 856 | ret->bytes_per_word = 8; |
| 857 | ret->bytes_per_rela = sizeof (Elf64_External_Rela); |
| 858 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
| 859 | ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER; |
| 860 | } |
| 861 | else |
| 862 | { |
| 863 | ret->put_word = sparc_put_word_32; |
| 864 | ret->r_info = sparc_elf_r_info_32; |
| 865 | ret->r_symndx = sparc_elf_r_symndx_32; |
| 866 | ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32; |
| 867 | ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32; |
| 868 | ret->tpoff_reloc = R_SPARC_TLS_TPOFF32; |
| 869 | ret->word_align_power = 2; |
| 870 | ret->align_power_max = 3; |
| 871 | ret->bytes_per_word = 4; |
| 872 | ret->bytes_per_rela = sizeof (Elf32_External_Rela); |
| 873 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
| 874 | ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER; |
| 875 | } |
| 876 | |
| 877 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
| 878 | sizeof (struct _bfd_sparc_elf_link_hash_entry))) |
| 879 | { |
| 880 | free (ret); |
| 881 | return NULL; |
| 882 | } |
| 883 | |
| 884 | return &ret->elf.root; |
| 885 | } |
| 886 | |
| 887 | /* Create .got and .rela.got sections in DYNOBJ, and set up |
| 888 | shortcuts to them in our hash table. */ |
| 889 | |
| 890 | static bfd_boolean |
| 891 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 892 | { |
| 893 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 894 | |
| 895 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 896 | return FALSE; |
| 897 | |
| 898 | htab = _bfd_sparc_elf_hash_table (info); |
| 899 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 900 | BFD_ASSERT (htab->sgot != NULL); |
| 901 | |
| 902 | htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 903 | if (htab->srelgot == NULL |
| 904 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, |
| 905 | htab->word_align_power)) |
| 906 | return FALSE; |
| 907 | |
| 908 | if (htab->is_vxworks) |
| 909 | { |
| 910 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 911 | if (!htab->sgotplt) |
| 912 | return FALSE; |
| 913 | } |
| 914 | |
| 915 | return TRUE; |
| 916 | } |
| 917 | |
| 918 | /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and |
| 919 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our |
| 920 | hash table. */ |
| 921 | |
| 922 | bfd_boolean |
| 923 | _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj, |
| 924 | struct bfd_link_info *info) |
| 925 | { |
| 926 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 927 | |
| 928 | htab = _bfd_sparc_elf_hash_table (info); |
| 929 | if (!htab->sgot && !create_got_section (dynobj, info)) |
| 930 | return FALSE; |
| 931 | |
| 932 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| 933 | return FALSE; |
| 934 | |
| 935 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 936 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 937 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 938 | if (!info->shared) |
| 939 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 940 | |
| 941 | if (htab->is_vxworks) |
| 942 | { |
| 943 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) |
| 944 | return FALSE; |
| 945 | if (info->shared) |
| 946 | { |
| 947 | htab->plt_header_size |
| 948 | = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); |
| 949 | htab->plt_entry_size |
| 950 | = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry); |
| 951 | } |
| 952 | else |
| 953 | { |
| 954 | htab->plt_header_size |
| 955 | = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry); |
| 956 | htab->plt_entry_size |
| 957 | = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry); |
| 958 | } |
| 959 | } |
| 960 | else |
| 961 | { |
| 962 | if (ABI_64_P (dynobj)) |
| 963 | { |
| 964 | htab->build_plt_entry = sparc64_plt_entry_build; |
| 965 | htab->plt_header_size = PLT64_HEADER_SIZE; |
| 966 | htab->plt_entry_size = PLT64_ENTRY_SIZE; |
| 967 | } |
| 968 | else |
| 969 | { |
| 970 | htab->build_plt_entry = sparc32_plt_entry_build; |
| 971 | htab->plt_header_size = PLT32_HEADER_SIZE; |
| 972 | htab->plt_entry_size = PLT32_ENTRY_SIZE; |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | if (!htab->splt || !htab->srelplt || !htab->sdynbss |
| 977 | || (!info->shared && !htab->srelbss)) |
| 978 | abort (); |
| 979 | |
| 980 | return TRUE; |
| 981 | } |
| 982 | |
| 983 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 984 | |
| 985 | void |
| 986 | _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 987 | struct elf_link_hash_entry *dir, |
| 988 | struct elf_link_hash_entry *ind) |
| 989 | { |
| 990 | struct _bfd_sparc_elf_link_hash_entry *edir, *eind; |
| 991 | |
| 992 | edir = (struct _bfd_sparc_elf_link_hash_entry *) dir; |
| 993 | eind = (struct _bfd_sparc_elf_link_hash_entry *) ind; |
| 994 | |
| 995 | if (eind->dyn_relocs != NULL) |
| 996 | { |
| 997 | if (edir->dyn_relocs != NULL) |
| 998 | { |
| 999 | struct _bfd_sparc_elf_dyn_relocs **pp; |
| 1000 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 1001 | |
| 1002 | /* Add reloc counts against the indirect sym to the direct sym |
| 1003 | list. Merge any entries against the same section. */ |
| 1004 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) |
| 1005 | { |
| 1006 | struct _bfd_sparc_elf_dyn_relocs *q; |
| 1007 | |
| 1008 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 1009 | if (q->sec == p->sec) |
| 1010 | { |
| 1011 | q->pc_count += p->pc_count; |
| 1012 | q->count += p->count; |
| 1013 | *pp = p->next; |
| 1014 | break; |
| 1015 | } |
| 1016 | if (q == NULL) |
| 1017 | pp = &p->next; |
| 1018 | } |
| 1019 | *pp = edir->dyn_relocs; |
| 1020 | } |
| 1021 | |
| 1022 | edir->dyn_relocs = eind->dyn_relocs; |
| 1023 | eind->dyn_relocs = NULL; |
| 1024 | } |
| 1025 | |
| 1026 | if (ind->root.type == bfd_link_hash_indirect |
| 1027 | && dir->got.refcount <= 0) |
| 1028 | { |
| 1029 | edir->tls_type = eind->tls_type; |
| 1030 | eind->tls_type = GOT_UNKNOWN; |
| 1031 | } |
| 1032 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 1033 | } |
| 1034 | |
| 1035 | static int |
| 1036 | sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd, |
| 1037 | int r_type, int is_local) |
| 1038 | { |
| 1039 | if (! ABI_64_P (abfd) |
| 1040 | && r_type == R_SPARC_TLS_GD_HI22 |
| 1041 | && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd) |
| 1042 | r_type = R_SPARC_REV32; |
| 1043 | |
| 1044 | if (info->shared) |
| 1045 | return r_type; |
| 1046 | |
| 1047 | switch (r_type) |
| 1048 | { |
| 1049 | case R_SPARC_TLS_GD_HI22: |
| 1050 | if (is_local) |
| 1051 | return R_SPARC_TLS_LE_HIX22; |
| 1052 | return R_SPARC_TLS_IE_HI22; |
| 1053 | case R_SPARC_TLS_GD_LO10: |
| 1054 | if (is_local) |
| 1055 | return R_SPARC_TLS_LE_LOX10; |
| 1056 | return R_SPARC_TLS_IE_LO10; |
| 1057 | case R_SPARC_TLS_IE_HI22: |
| 1058 | if (is_local) |
| 1059 | return R_SPARC_TLS_LE_HIX22; |
| 1060 | return r_type; |
| 1061 | case R_SPARC_TLS_IE_LO10: |
| 1062 | if (is_local) |
| 1063 | return R_SPARC_TLS_LE_LOX10; |
| 1064 | return r_type; |
| 1065 | case R_SPARC_TLS_LDM_HI22: |
| 1066 | return R_SPARC_TLS_LE_HIX22; |
| 1067 | case R_SPARC_TLS_LDM_LO10: |
| 1068 | return R_SPARC_TLS_LE_LOX10; |
| 1069 | } |
| 1070 | |
| 1071 | return r_type; |
| 1072 | } |
| 1073 | \f |
| 1074 | /* Look through the relocs for a section during the first phase, and |
| 1075 | allocate space in the global offset table or procedure linkage |
| 1076 | table. */ |
| 1077 | |
| 1078 | bfd_boolean |
| 1079 | _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 1080 | asection *sec, const Elf_Internal_Rela *relocs) |
| 1081 | { |
| 1082 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 1083 | Elf_Internal_Shdr *symtab_hdr; |
| 1084 | struct elf_link_hash_entry **sym_hashes; |
| 1085 | bfd_vma *local_got_offsets; |
| 1086 | const Elf_Internal_Rela *rel; |
| 1087 | const Elf_Internal_Rela *rel_end; |
| 1088 | asection *sreloc; |
| 1089 | int num_relocs; |
| 1090 | bfd_boolean checked_tlsgd = FALSE; |
| 1091 | |
| 1092 | if (info->relocatable) |
| 1093 | return TRUE; |
| 1094 | |
| 1095 | htab = _bfd_sparc_elf_hash_table (info); |
| 1096 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 1097 | sym_hashes = elf_sym_hashes (abfd); |
| 1098 | local_got_offsets = elf_local_got_offsets (abfd); |
| 1099 | |
| 1100 | sreloc = NULL; |
| 1101 | |
| 1102 | if (ABI_64_P (abfd)) |
| 1103 | num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr); |
| 1104 | else |
| 1105 | num_relocs = sec->reloc_count; |
| 1106 | |
| 1107 | BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0); |
| 1108 | |
| 1109 | rel_end = relocs + num_relocs; |
| 1110 | for (rel = relocs; rel < rel_end; rel++) |
| 1111 | { |
| 1112 | unsigned int r_type; |
| 1113 | unsigned long r_symndx; |
| 1114 | struct elf_link_hash_entry *h; |
| 1115 | |
| 1116 | r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); |
| 1117 | r_type = SPARC_ELF_R_TYPE (rel->r_info); |
| 1118 | |
| 1119 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
| 1120 | { |
| 1121 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
| 1122 | abfd, r_symndx); |
| 1123 | return FALSE; |
| 1124 | } |
| 1125 | |
| 1126 | if (r_symndx < symtab_hdr->sh_info) |
| 1127 | h = NULL; |
| 1128 | else |
| 1129 | { |
| 1130 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1131 | while (h->root.type == bfd_link_hash_indirect |
| 1132 | || h->root.type == bfd_link_hash_warning) |
| 1133 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1134 | } |
| 1135 | |
| 1136 | /* Compatibility with old R_SPARC_REV32 reloc conflicting |
| 1137 | with R_SPARC_TLS_GD_HI22. */ |
| 1138 | if (! ABI_64_P (abfd) && ! checked_tlsgd) |
| 1139 | switch (r_type) |
| 1140 | { |
| 1141 | case R_SPARC_TLS_GD_HI22: |
| 1142 | { |
| 1143 | const Elf_Internal_Rela *relt; |
| 1144 | |
| 1145 | for (relt = rel + 1; relt < rel_end; relt++) |
| 1146 | if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10 |
| 1147 | || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD |
| 1148 | || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL) |
| 1149 | break; |
| 1150 | checked_tlsgd = TRUE; |
| 1151 | _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end; |
| 1152 | } |
| 1153 | break; |
| 1154 | case R_SPARC_TLS_GD_LO10: |
| 1155 | case R_SPARC_TLS_GD_ADD: |
| 1156 | case R_SPARC_TLS_GD_CALL: |
| 1157 | checked_tlsgd = TRUE; |
| 1158 | _bfd_sparc_elf_tdata (abfd)->has_tlsgd = TRUE; |
| 1159 | break; |
| 1160 | } |
| 1161 | |
| 1162 | r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL); |
| 1163 | switch (r_type) |
| 1164 | { |
| 1165 | case R_SPARC_TLS_LDM_HI22: |
| 1166 | case R_SPARC_TLS_LDM_LO10: |
| 1167 | htab->tls_ldm_got.refcount += 1; |
| 1168 | break; |
| 1169 | |
| 1170 | case R_SPARC_TLS_LE_HIX22: |
| 1171 | case R_SPARC_TLS_LE_LOX10: |
| 1172 | if (info->shared) |
| 1173 | goto r_sparc_plt32; |
| 1174 | break; |
| 1175 | |
| 1176 | case R_SPARC_TLS_IE_HI22: |
| 1177 | case R_SPARC_TLS_IE_LO10: |
| 1178 | if (info->shared) |
| 1179 | info->flags |= DF_STATIC_TLS; |
| 1180 | /* Fall through */ |
| 1181 | |
| 1182 | case R_SPARC_GOT10: |
| 1183 | case R_SPARC_GOT13: |
| 1184 | case R_SPARC_GOT22: |
| 1185 | case R_SPARC_GOTDATA_HIX22: |
| 1186 | case R_SPARC_GOTDATA_LOX10: |
| 1187 | case R_SPARC_GOTDATA_OP_HIX22: |
| 1188 | case R_SPARC_GOTDATA_OP_LOX10: |
| 1189 | case R_SPARC_TLS_GD_HI22: |
| 1190 | case R_SPARC_TLS_GD_LO10: |
| 1191 | /* This symbol requires a global offset table entry. */ |
| 1192 | { |
| 1193 | int tls_type, old_tls_type; |
| 1194 | |
| 1195 | switch (r_type) |
| 1196 | { |
| 1197 | default: |
| 1198 | case R_SPARC_GOT10: |
| 1199 | case R_SPARC_GOT13: |
| 1200 | case R_SPARC_GOT22: |
| 1201 | case R_SPARC_GOTDATA_HIX22: |
| 1202 | case R_SPARC_GOTDATA_LOX10: |
| 1203 | case R_SPARC_GOTDATA_OP_HIX22: |
| 1204 | case R_SPARC_GOTDATA_OP_LOX10: |
| 1205 | tls_type = GOT_NORMAL; |
| 1206 | break; |
| 1207 | case R_SPARC_TLS_GD_HI22: |
| 1208 | case R_SPARC_TLS_GD_LO10: |
| 1209 | tls_type = GOT_TLS_GD; |
| 1210 | break; |
| 1211 | case R_SPARC_TLS_IE_HI22: |
| 1212 | case R_SPARC_TLS_IE_LO10: |
| 1213 | tls_type = GOT_TLS_IE; |
| 1214 | break; |
| 1215 | } |
| 1216 | |
| 1217 | if (h != NULL) |
| 1218 | { |
| 1219 | h->got.refcount += 1; |
| 1220 | old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; |
| 1221 | } |
| 1222 | else |
| 1223 | { |
| 1224 | bfd_signed_vma *local_got_refcounts; |
| 1225 | |
| 1226 | /* This is a global offset table entry for a local symbol. */ |
| 1227 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1228 | if (local_got_refcounts == NULL) |
| 1229 | { |
| 1230 | bfd_size_type size; |
| 1231 | |
| 1232 | size = symtab_hdr->sh_info; |
| 1233 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); |
| 1234 | local_got_refcounts = ((bfd_signed_vma *) |
| 1235 | bfd_zalloc (abfd, size)); |
| 1236 | if (local_got_refcounts == NULL) |
| 1237 | return FALSE; |
| 1238 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 1239 | _bfd_sparc_elf_local_got_tls_type (abfd) |
| 1240 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); |
| 1241 | } |
| 1242 | local_got_refcounts[r_symndx] += 1; |
| 1243 | old_tls_type = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx]; |
| 1244 | } |
| 1245 | |
| 1246 | /* If a TLS symbol is accessed using IE at least once, |
| 1247 | there is no point to use dynamic model for it. */ |
| 1248 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
| 1249 | && (old_tls_type != GOT_TLS_GD |
| 1250 | || tls_type != GOT_TLS_IE)) |
| 1251 | { |
| 1252 | if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) |
| 1253 | tls_type = old_tls_type; |
| 1254 | else |
| 1255 | { |
| 1256 | (*_bfd_error_handler) |
| 1257 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
| 1258 | abfd, h ? h->root.root.string : "<local>"); |
| 1259 | return FALSE; |
| 1260 | } |
| 1261 | } |
| 1262 | |
| 1263 | if (old_tls_type != tls_type) |
| 1264 | { |
| 1265 | if (h != NULL) |
| 1266 | _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type; |
| 1267 | else |
| 1268 | _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | if (htab->sgot == NULL) |
| 1273 | { |
| 1274 | if (htab->elf.dynobj == NULL) |
| 1275 | htab->elf.dynobj = abfd; |
| 1276 | if (!create_got_section (htab->elf.dynobj, info)) |
| 1277 | return FALSE; |
| 1278 | } |
| 1279 | break; |
| 1280 | |
| 1281 | case R_SPARC_TLS_GD_CALL: |
| 1282 | case R_SPARC_TLS_LDM_CALL: |
| 1283 | if (info->shared) |
| 1284 | { |
| 1285 | /* These are basically R_SPARC_TLS_WPLT30 relocs against |
| 1286 | __tls_get_addr. */ |
| 1287 | struct bfd_link_hash_entry *bh = NULL; |
| 1288 | if (! _bfd_generic_link_add_one_symbol (info, abfd, |
| 1289 | "__tls_get_addr", 0, |
| 1290 | bfd_und_section_ptr, 0, |
| 1291 | NULL, FALSE, FALSE, |
| 1292 | &bh)) |
| 1293 | return FALSE; |
| 1294 | h = (struct elf_link_hash_entry *) bh; |
| 1295 | } |
| 1296 | else |
| 1297 | break; |
| 1298 | /* Fall through */ |
| 1299 | |
| 1300 | case R_SPARC_PLT32: |
| 1301 | case R_SPARC_WPLT30: |
| 1302 | case R_SPARC_HIPLT22: |
| 1303 | case R_SPARC_LOPLT10: |
| 1304 | case R_SPARC_PCPLT32: |
| 1305 | case R_SPARC_PCPLT22: |
| 1306 | case R_SPARC_PCPLT10: |
| 1307 | case R_SPARC_PLT64: |
| 1308 | /* This symbol requires a procedure linkage table entry. We |
| 1309 | actually build the entry in adjust_dynamic_symbol, |
| 1310 | because this might be a case of linking PIC code without |
| 1311 | linking in any dynamic objects, in which case we don't |
| 1312 | need to generate a procedure linkage table after all. */ |
| 1313 | |
| 1314 | if (h == NULL) |
| 1315 | { |
| 1316 | if (! ABI_64_P (abfd)) |
| 1317 | { |
| 1318 | /* The Solaris native assembler will generate a WPLT30 |
| 1319 | reloc for a local symbol if you assemble a call from |
| 1320 | one section to another when using -K pic. We treat |
| 1321 | it as WDISP30. */ |
| 1322 | if (ELF32_R_TYPE (rel->r_info) == R_SPARC_PLT32) |
| 1323 | goto r_sparc_plt32; |
| 1324 | break; |
| 1325 | } |
| 1326 | /* PR 7027: We need similar behaviour for 64-bit binaries. */ |
| 1327 | else if (r_type == R_SPARC_WPLT30) |
| 1328 | break; |
| 1329 | |
| 1330 | /* It does not make sense to have a procedure linkage |
| 1331 | table entry for a local symbol. */ |
| 1332 | bfd_set_error (bfd_error_bad_value); |
| 1333 | return FALSE; |
| 1334 | } |
| 1335 | |
| 1336 | h->needs_plt = 1; |
| 1337 | |
| 1338 | { |
| 1339 | int this_r_type; |
| 1340 | |
| 1341 | this_r_type = SPARC_ELF_R_TYPE (rel->r_info); |
| 1342 | if (this_r_type == R_SPARC_PLT32 |
| 1343 | || this_r_type == R_SPARC_PLT64) |
| 1344 | goto r_sparc_plt32; |
| 1345 | } |
| 1346 | h->plt.refcount += 1; |
| 1347 | break; |
| 1348 | |
| 1349 | case R_SPARC_PC10: |
| 1350 | case R_SPARC_PC22: |
| 1351 | case R_SPARC_PC_HH22: |
| 1352 | case R_SPARC_PC_HM10: |
| 1353 | case R_SPARC_PC_LM22: |
| 1354 | if (h != NULL) |
| 1355 | h->non_got_ref = 1; |
| 1356 | |
| 1357 | if (h != NULL |
| 1358 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1359 | break; |
| 1360 | /* Fall through. */ |
| 1361 | |
| 1362 | case R_SPARC_DISP8: |
| 1363 | case R_SPARC_DISP16: |
| 1364 | case R_SPARC_DISP32: |
| 1365 | case R_SPARC_DISP64: |
| 1366 | case R_SPARC_WDISP30: |
| 1367 | case R_SPARC_WDISP22: |
| 1368 | case R_SPARC_WDISP19: |
| 1369 | case R_SPARC_WDISP16: |
| 1370 | case R_SPARC_8: |
| 1371 | case R_SPARC_16: |
| 1372 | case R_SPARC_32: |
| 1373 | case R_SPARC_HI22: |
| 1374 | case R_SPARC_22: |
| 1375 | case R_SPARC_13: |
| 1376 | case R_SPARC_LO10: |
| 1377 | case R_SPARC_UA16: |
| 1378 | case R_SPARC_UA32: |
| 1379 | case R_SPARC_10: |
| 1380 | case R_SPARC_11: |
| 1381 | case R_SPARC_64: |
| 1382 | case R_SPARC_OLO10: |
| 1383 | case R_SPARC_HH22: |
| 1384 | case R_SPARC_HM10: |
| 1385 | case R_SPARC_LM22: |
| 1386 | case R_SPARC_7: |
| 1387 | case R_SPARC_5: |
| 1388 | case R_SPARC_6: |
| 1389 | case R_SPARC_HIX22: |
| 1390 | case R_SPARC_LOX10: |
| 1391 | case R_SPARC_H44: |
| 1392 | case R_SPARC_M44: |
| 1393 | case R_SPARC_L44: |
| 1394 | case R_SPARC_UA64: |
| 1395 | if (h != NULL) |
| 1396 | h->non_got_ref = 1; |
| 1397 | |
| 1398 | r_sparc_plt32: |
| 1399 | if (h != NULL && !info->shared) |
| 1400 | { |
| 1401 | /* We may need a .plt entry if the function this reloc |
| 1402 | refers to is in a shared lib. */ |
| 1403 | h->plt.refcount += 1; |
| 1404 | } |
| 1405 | |
| 1406 | /* If we are creating a shared library, and this is a reloc |
| 1407 | against a global symbol, or a non PC relative reloc |
| 1408 | against a local symbol, then we need to copy the reloc |
| 1409 | into the shared library. However, if we are linking with |
| 1410 | -Bsymbolic, we do not need to copy a reloc against a |
| 1411 | global symbol which is defined in an object we are |
| 1412 | including in the link (i.e., DEF_REGULAR is set). At |
| 1413 | this point we have not seen all the input files, so it is |
| 1414 | possible that DEF_REGULAR is not set now but will be set |
| 1415 | later (it is never cleared). In case of a weak definition, |
| 1416 | DEF_REGULAR may be cleared later by a strong definition in |
| 1417 | a shared library. We account for that possibility below by |
| 1418 | storing information in the relocs_copied field of the hash |
| 1419 | table entry. A similar situation occurs when creating |
| 1420 | shared libraries and symbol visibility changes render the |
| 1421 | symbol local. |
| 1422 | |
| 1423 | If on the other hand, we are creating an executable, we |
| 1424 | may need to keep relocations for symbols satisfied by a |
| 1425 | dynamic library if we manage to avoid copy relocs for the |
| 1426 | symbol. */ |
| 1427 | if ((info->shared |
| 1428 | && (sec->flags & SEC_ALLOC) != 0 |
| 1429 | && (! _bfd_sparc_elf_howto_table[r_type].pc_relative |
| 1430 | || (h != NULL |
| 1431 | && (! info->symbolic |
| 1432 | || h->root.type == bfd_link_hash_defweak |
| 1433 | || !h->def_regular)))) |
| 1434 | || (!info->shared |
| 1435 | && (sec->flags & SEC_ALLOC) != 0 |
| 1436 | && h != NULL |
| 1437 | && (h->root.type == bfd_link_hash_defweak |
| 1438 | || !h->def_regular))) |
| 1439 | { |
| 1440 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 1441 | struct _bfd_sparc_elf_dyn_relocs **head; |
| 1442 | |
| 1443 | /* When creating a shared object, we must copy these |
| 1444 | relocs into the output file. We create a reloc |
| 1445 | section in dynobj and make room for the reloc. */ |
| 1446 | if (sreloc == NULL) |
| 1447 | { |
| 1448 | if (htab->elf.dynobj == NULL) |
| 1449 | htab->elf.dynobj = abfd; |
| 1450 | |
| 1451 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 1452 | (sec, htab->elf.dynobj, htab->word_align_power, |
| 1453 | abfd, /*rela?*/ TRUE); |
| 1454 | |
| 1455 | if (sreloc == NULL) |
| 1456 | return FALSE; |
| 1457 | } |
| 1458 | |
| 1459 | /* If this is a global symbol, we count the number of |
| 1460 | relocations we need for this symbol. */ |
| 1461 | if (h != NULL) |
| 1462 | head = &((struct _bfd_sparc_elf_link_hash_entry *) h)->dyn_relocs; |
| 1463 | else |
| 1464 | { |
| 1465 | /* Track dynamic relocs needed for local syms too. |
| 1466 | We really need local syms available to do this |
| 1467 | easily. Oh well. */ |
| 1468 | asection *s; |
| 1469 | void *vpp; |
| 1470 | Elf_Internal_Sym *isym; |
| 1471 | |
| 1472 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 1473 | abfd, r_symndx); |
| 1474 | if (isym == NULL) |
| 1475 | return FALSE; |
| 1476 | |
| 1477 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 1478 | if (s == NULL) |
| 1479 | s = sec; |
| 1480 | |
| 1481 | vpp = &elf_section_data (s)->local_dynrel; |
| 1482 | head = (struct _bfd_sparc_elf_dyn_relocs **) vpp; |
| 1483 | } |
| 1484 | |
| 1485 | p = *head; |
| 1486 | if (p == NULL || p->sec != sec) |
| 1487 | { |
| 1488 | bfd_size_type amt = sizeof *p; |
| 1489 | p = ((struct _bfd_sparc_elf_dyn_relocs *) |
| 1490 | bfd_alloc (htab->elf.dynobj, amt)); |
| 1491 | if (p == NULL) |
| 1492 | return FALSE; |
| 1493 | p->next = *head; |
| 1494 | *head = p; |
| 1495 | p->sec = sec; |
| 1496 | p->count = 0; |
| 1497 | p->pc_count = 0; |
| 1498 | } |
| 1499 | |
| 1500 | p->count += 1; |
| 1501 | if (_bfd_sparc_elf_howto_table[r_type].pc_relative) |
| 1502 | p->pc_count += 1; |
| 1503 | } |
| 1504 | |
| 1505 | break; |
| 1506 | |
| 1507 | case R_SPARC_GNU_VTINHERIT: |
| 1508 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 1509 | return FALSE; |
| 1510 | break; |
| 1511 | |
| 1512 | case R_SPARC_GNU_VTENTRY: |
| 1513 | BFD_ASSERT (h != NULL); |
| 1514 | if (h != NULL |
| 1515 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 1516 | return FALSE; |
| 1517 | break; |
| 1518 | |
| 1519 | case R_SPARC_REGISTER: |
| 1520 | /* Nothing to do. */ |
| 1521 | break; |
| 1522 | |
| 1523 | default: |
| 1524 | break; |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | return TRUE; |
| 1529 | } |
| 1530 | \f |
| 1531 | asection * |
| 1532 | _bfd_sparc_elf_gc_mark_hook (asection *sec, |
| 1533 | struct bfd_link_info *info, |
| 1534 | Elf_Internal_Rela *rel, |
| 1535 | struct elf_link_hash_entry *h, |
| 1536 | Elf_Internal_Sym *sym) |
| 1537 | { |
| 1538 | if (h != NULL) |
| 1539 | switch (SPARC_ELF_R_TYPE (rel->r_info)) |
| 1540 | { |
| 1541 | case R_SPARC_GNU_VTINHERIT: |
| 1542 | case R_SPARC_GNU_VTENTRY: |
| 1543 | return NULL; |
| 1544 | } |
| 1545 | |
| 1546 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 1547 | } |
| 1548 | |
| 1549 | /* Update the got entry reference counts for the section being removed. */ |
| 1550 | bfd_boolean |
| 1551 | _bfd_sparc_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 1552 | asection *sec, const Elf_Internal_Rela *relocs) |
| 1553 | { |
| 1554 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 1555 | Elf_Internal_Shdr *symtab_hdr; |
| 1556 | struct elf_link_hash_entry **sym_hashes; |
| 1557 | bfd_signed_vma *local_got_refcounts; |
| 1558 | const Elf_Internal_Rela *rel, *relend; |
| 1559 | |
| 1560 | if (info->relocatable) |
| 1561 | return TRUE; |
| 1562 | |
| 1563 | BFD_ASSERT (is_sparc_elf (abfd) || sec->reloc_count == 0); |
| 1564 | |
| 1565 | elf_section_data (sec)->local_dynrel = NULL; |
| 1566 | |
| 1567 | htab = _bfd_sparc_elf_hash_table (info); |
| 1568 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 1569 | sym_hashes = elf_sym_hashes (abfd); |
| 1570 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1571 | |
| 1572 | relend = relocs + sec->reloc_count; |
| 1573 | for (rel = relocs; rel < relend; rel++) |
| 1574 | { |
| 1575 | unsigned long r_symndx; |
| 1576 | unsigned int r_type; |
| 1577 | struct elf_link_hash_entry *h = NULL; |
| 1578 | |
| 1579 | r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); |
| 1580 | if (r_symndx >= symtab_hdr->sh_info) |
| 1581 | { |
| 1582 | struct _bfd_sparc_elf_link_hash_entry *eh; |
| 1583 | struct _bfd_sparc_elf_dyn_relocs **pp; |
| 1584 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 1585 | |
| 1586 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1587 | while (h->root.type == bfd_link_hash_indirect |
| 1588 | || h->root.type == bfd_link_hash_warning) |
| 1589 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1590 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; |
| 1591 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
| 1592 | if (p->sec == sec) |
| 1593 | { |
| 1594 | /* Everything must go for SEC. */ |
| 1595 | *pp = p->next; |
| 1596 | break; |
| 1597 | } |
| 1598 | } |
| 1599 | |
| 1600 | r_type = SPARC_ELF_R_TYPE (rel->r_info); |
| 1601 | r_type = sparc_elf_tls_transition (info, abfd, r_type, h != NULL); |
| 1602 | switch (r_type) |
| 1603 | { |
| 1604 | case R_SPARC_TLS_LDM_HI22: |
| 1605 | case R_SPARC_TLS_LDM_LO10: |
| 1606 | if (_bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount > 0) |
| 1607 | _bfd_sparc_elf_hash_table (info)->tls_ldm_got.refcount -= 1; |
| 1608 | break; |
| 1609 | |
| 1610 | case R_SPARC_TLS_GD_HI22: |
| 1611 | case R_SPARC_TLS_GD_LO10: |
| 1612 | case R_SPARC_TLS_IE_HI22: |
| 1613 | case R_SPARC_TLS_IE_LO10: |
| 1614 | case R_SPARC_GOT10: |
| 1615 | case R_SPARC_GOT13: |
| 1616 | case R_SPARC_GOT22: |
| 1617 | case R_SPARC_GOTDATA_HIX22: |
| 1618 | case R_SPARC_GOTDATA_LOX10: |
| 1619 | case R_SPARC_GOTDATA_OP_HIX22: |
| 1620 | case R_SPARC_GOTDATA_OP_LOX10: |
| 1621 | if (h != NULL) |
| 1622 | { |
| 1623 | if (h->got.refcount > 0) |
| 1624 | h->got.refcount--; |
| 1625 | } |
| 1626 | else |
| 1627 | { |
| 1628 | if (local_got_refcounts[r_symndx] > 0) |
| 1629 | local_got_refcounts[r_symndx]--; |
| 1630 | } |
| 1631 | break; |
| 1632 | |
| 1633 | case R_SPARC_PC10: |
| 1634 | case R_SPARC_PC22: |
| 1635 | case R_SPARC_PC_HH22: |
| 1636 | case R_SPARC_PC_HM10: |
| 1637 | case R_SPARC_PC_LM22: |
| 1638 | if (h != NULL |
| 1639 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1640 | break; |
| 1641 | /* Fall through. */ |
| 1642 | |
| 1643 | case R_SPARC_DISP8: |
| 1644 | case R_SPARC_DISP16: |
| 1645 | case R_SPARC_DISP32: |
| 1646 | case R_SPARC_DISP64: |
| 1647 | case R_SPARC_WDISP30: |
| 1648 | case R_SPARC_WDISP22: |
| 1649 | case R_SPARC_WDISP19: |
| 1650 | case R_SPARC_WDISP16: |
| 1651 | case R_SPARC_8: |
| 1652 | case R_SPARC_16: |
| 1653 | case R_SPARC_32: |
| 1654 | case R_SPARC_HI22: |
| 1655 | case R_SPARC_22: |
| 1656 | case R_SPARC_13: |
| 1657 | case R_SPARC_LO10: |
| 1658 | case R_SPARC_UA16: |
| 1659 | case R_SPARC_UA32: |
| 1660 | case R_SPARC_PLT32: |
| 1661 | case R_SPARC_10: |
| 1662 | case R_SPARC_11: |
| 1663 | case R_SPARC_64: |
| 1664 | case R_SPARC_OLO10: |
| 1665 | case R_SPARC_HH22: |
| 1666 | case R_SPARC_HM10: |
| 1667 | case R_SPARC_LM22: |
| 1668 | case R_SPARC_7: |
| 1669 | case R_SPARC_5: |
| 1670 | case R_SPARC_6: |
| 1671 | case R_SPARC_HIX22: |
| 1672 | case R_SPARC_LOX10: |
| 1673 | case R_SPARC_H44: |
| 1674 | case R_SPARC_M44: |
| 1675 | case R_SPARC_L44: |
| 1676 | case R_SPARC_UA64: |
| 1677 | if (info->shared) |
| 1678 | break; |
| 1679 | /* Fall through. */ |
| 1680 | |
| 1681 | case R_SPARC_WPLT30: |
| 1682 | if (h != NULL) |
| 1683 | { |
| 1684 | if (h->plt.refcount > 0) |
| 1685 | h->plt.refcount--; |
| 1686 | } |
| 1687 | break; |
| 1688 | |
| 1689 | default: |
| 1690 | break; |
| 1691 | } |
| 1692 | } |
| 1693 | |
| 1694 | return TRUE; |
| 1695 | } |
| 1696 | |
| 1697 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1698 | regular object. The current definition is in some section of the |
| 1699 | dynamic object, but we're not including those sections. We have to |
| 1700 | change the definition to something the rest of the link can |
| 1701 | understand. */ |
| 1702 | |
| 1703 | bfd_boolean |
| 1704 | _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 1705 | struct elf_link_hash_entry *h) |
| 1706 | { |
| 1707 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 1708 | struct _bfd_sparc_elf_link_hash_entry * eh; |
| 1709 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 1710 | asection *s; |
| 1711 | |
| 1712 | htab = _bfd_sparc_elf_hash_table (info); |
| 1713 | |
| 1714 | /* Make sure we know what is going on here. */ |
| 1715 | BFD_ASSERT (htab->elf.dynobj != NULL |
| 1716 | && (h->needs_plt |
| 1717 | || h->u.weakdef != NULL |
| 1718 | || (h->def_dynamic |
| 1719 | && h->ref_regular |
| 1720 | && !h->def_regular))); |
| 1721 | |
| 1722 | /* If this is a function, put it in the procedure linkage table. We |
| 1723 | will fill in the contents of the procedure linkage table later |
| 1724 | (although we could actually do it here). The STT_NOTYPE |
| 1725 | condition is a hack specifically for the Oracle libraries |
| 1726 | delivered for Solaris; for some inexplicable reason, they define |
| 1727 | some of their functions as STT_NOTYPE when they really should be |
| 1728 | STT_FUNC. */ |
| 1729 | if (h->type == STT_FUNC |
| 1730 | || h->needs_plt |
| 1731 | || (h->type == STT_NOTYPE |
| 1732 | && (h->root.type == bfd_link_hash_defined |
| 1733 | || h->root.type == bfd_link_hash_defweak) |
| 1734 | && (h->root.u.def.section->flags & SEC_CODE) != 0)) |
| 1735 | { |
| 1736 | if (h->plt.refcount <= 0 |
| 1737 | || (! info->shared |
| 1738 | && !h->def_dynamic |
| 1739 | && !h->ref_dynamic |
| 1740 | && h->root.type != bfd_link_hash_undefweak |
| 1741 | && h->root.type != bfd_link_hash_undefined)) |
| 1742 | { |
| 1743 | /* This case can occur if we saw a WPLT30 reloc in an input |
| 1744 | file, but the symbol was never referred to by a dynamic |
| 1745 | object, or if all references were garbage collected. In |
| 1746 | such a case, we don't actually need to build a procedure |
| 1747 | linkage table, and we can just do a WDISP30 reloc instead. */ |
| 1748 | h->plt.offset = (bfd_vma) -1; |
| 1749 | h->needs_plt = 0; |
| 1750 | } |
| 1751 | |
| 1752 | return TRUE; |
| 1753 | } |
| 1754 | else |
| 1755 | h->plt.offset = (bfd_vma) -1; |
| 1756 | |
| 1757 | /* If this is a weak symbol, and there is a real definition, the |
| 1758 | processor independent code will have arranged for us to see the |
| 1759 | real definition first, and we can just use the same value. */ |
| 1760 | if (h->u.weakdef != NULL) |
| 1761 | { |
| 1762 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 1763 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 1764 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 1765 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 1766 | return TRUE; |
| 1767 | } |
| 1768 | |
| 1769 | /* This is a reference to a symbol defined by a dynamic object which |
| 1770 | is not a function. */ |
| 1771 | |
| 1772 | /* If we are creating a shared library, we must presume that the |
| 1773 | only references to the symbol are via the global offset table. |
| 1774 | For such cases we need not do anything here; the relocations will |
| 1775 | be handled correctly by relocate_section. */ |
| 1776 | if (info->shared) |
| 1777 | return TRUE; |
| 1778 | |
| 1779 | /* If there are no references to this symbol that do not use the |
| 1780 | GOT, we don't need to generate a copy reloc. */ |
| 1781 | if (!h->non_got_ref) |
| 1782 | return TRUE; |
| 1783 | |
| 1784 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; |
| 1785 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1786 | { |
| 1787 | s = p->sec->output_section; |
| 1788 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 1789 | break; |
| 1790 | } |
| 1791 | |
| 1792 | /* If we didn't find any dynamic relocs in read-only sections, then |
| 1793 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
| 1794 | if (p == NULL) |
| 1795 | { |
| 1796 | h->non_got_ref = 0; |
| 1797 | return TRUE; |
| 1798 | } |
| 1799 | |
| 1800 | if (h->size == 0) |
| 1801 | { |
| 1802 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), |
| 1803 | h->root.root.string); |
| 1804 | return TRUE; |
| 1805 | } |
| 1806 | |
| 1807 | /* We must allocate the symbol in our .dynbss section, which will |
| 1808 | become part of the .bss section of the executable. There will be |
| 1809 | an entry for this symbol in the .dynsym section. The dynamic |
| 1810 | object will contain position independent code, so all references |
| 1811 | from the dynamic object to this symbol will go through the global |
| 1812 | offset table. The dynamic linker will use the .dynsym entry to |
| 1813 | determine the address it must put in the global offset table, so |
| 1814 | both the dynamic object and the regular object will refer to the |
| 1815 | same memory location for the variable. */ |
| 1816 | |
| 1817 | /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker |
| 1818 | to copy the initial value out of the dynamic object and into the |
| 1819 | runtime process image. We need to remember the offset into the |
| 1820 | .rel.bss section we are going to use. */ |
| 1821 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 1822 | { |
| 1823 | htab->srelbss->size += SPARC_ELF_RELA_BYTES (htab); |
| 1824 | h->needs_copy = 1; |
| 1825 | } |
| 1826 | |
| 1827 | s = htab->sdynbss; |
| 1828 | |
| 1829 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 1830 | } |
| 1831 | |
| 1832 | /* Allocate space in .plt, .got and associated reloc sections for |
| 1833 | dynamic relocs. */ |
| 1834 | |
| 1835 | static bfd_boolean |
| 1836 | allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf) |
| 1837 | { |
| 1838 | struct bfd_link_info *info; |
| 1839 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 1840 | struct _bfd_sparc_elf_link_hash_entry *eh; |
| 1841 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 1842 | |
| 1843 | if (h->root.type == bfd_link_hash_indirect) |
| 1844 | return TRUE; |
| 1845 | |
| 1846 | if (h->root.type == bfd_link_hash_warning) |
| 1847 | /* When warning symbols are created, they **replace** the "real" |
| 1848 | entry in the hash table, thus we never get to see the real |
| 1849 | symbol in a hash traversal. So look at it now. */ |
| 1850 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1851 | |
| 1852 | info = (struct bfd_link_info *) inf; |
| 1853 | htab = _bfd_sparc_elf_hash_table (info); |
| 1854 | |
| 1855 | if (htab->elf.dynamic_sections_created |
| 1856 | && h->plt.refcount > 0) |
| 1857 | { |
| 1858 | /* Make sure this symbol is output as a dynamic symbol. |
| 1859 | Undefined weak syms won't yet be marked as dynamic. */ |
| 1860 | if (h->dynindx == -1 |
| 1861 | && !h->forced_local) |
| 1862 | { |
| 1863 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1864 | return FALSE; |
| 1865 | } |
| 1866 | |
| 1867 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
| 1868 | { |
| 1869 | asection *s = htab->splt; |
| 1870 | |
| 1871 | /* Allocate room for the header. */ |
| 1872 | if (s->size == 0) |
| 1873 | { |
| 1874 | s->size = htab->plt_header_size; |
| 1875 | |
| 1876 | /* Allocate space for the .rela.plt.unloaded relocations. */ |
| 1877 | if (htab->is_vxworks && !info->shared) |
| 1878 | htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2; |
| 1879 | } |
| 1880 | |
| 1881 | /* The procedure linkage table size is bounded by the magnitude |
| 1882 | of the offset we can describe in the entry. */ |
| 1883 | if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ? |
| 1884 | (((bfd_vma)1 << 31) << 1) : 0x400000)) |
| 1885 | { |
| 1886 | bfd_set_error (bfd_error_bad_value); |
| 1887 | return FALSE; |
| 1888 | } |
| 1889 | |
| 1890 | if (SPARC_ELF_WORD_BYTES(htab) == 8 |
| 1891 | && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE) |
| 1892 | { |
| 1893 | bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE; |
| 1894 | |
| 1895 | |
| 1896 | off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE; |
| 1897 | |
| 1898 | h->plt.offset = (s->size - (off * 8)); |
| 1899 | } |
| 1900 | else |
| 1901 | h->plt.offset = s->size; |
| 1902 | |
| 1903 | /* If this symbol is not defined in a regular file, and we are |
| 1904 | not generating a shared library, then set the symbol to this |
| 1905 | location in the .plt. This is required to make function |
| 1906 | pointers compare as equal between the normal executable and |
| 1907 | the shared library. */ |
| 1908 | if (! info->shared |
| 1909 | && !h->def_regular) |
| 1910 | { |
| 1911 | h->root.u.def.section = s; |
| 1912 | h->root.u.def.value = h->plt.offset; |
| 1913 | } |
| 1914 | |
| 1915 | /* Make room for this entry. */ |
| 1916 | s->size += htab->plt_entry_size; |
| 1917 | |
| 1918 | /* We also need to make an entry in the .rela.plt section. */ |
| 1919 | htab->srelplt->size += SPARC_ELF_RELA_BYTES (htab); |
| 1920 | |
| 1921 | if (htab->is_vxworks) |
| 1922 | { |
| 1923 | /* Allocate space for the .got.plt entry. */ |
| 1924 | htab->sgotplt->size += 4; |
| 1925 | |
| 1926 | /* ...and for the .rela.plt.unloaded relocations. */ |
| 1927 | if (!info->shared) |
| 1928 | htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3; |
| 1929 | } |
| 1930 | } |
| 1931 | else |
| 1932 | { |
| 1933 | h->plt.offset = (bfd_vma) -1; |
| 1934 | h->needs_plt = 0; |
| 1935 | } |
| 1936 | } |
| 1937 | else |
| 1938 | { |
| 1939 | h->plt.offset = (bfd_vma) -1; |
| 1940 | h->needs_plt = 0; |
| 1941 | } |
| 1942 | |
| 1943 | /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary, |
| 1944 | make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */ |
| 1945 | if (h->got.refcount > 0 |
| 1946 | && !info->shared |
| 1947 | && h->dynindx == -1 |
| 1948 | && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE) |
| 1949 | h->got.offset = (bfd_vma) -1; |
| 1950 | else if (h->got.refcount > 0) |
| 1951 | { |
| 1952 | asection *s; |
| 1953 | bfd_boolean dyn; |
| 1954 | int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; |
| 1955 | |
| 1956 | /* Make sure this symbol is output as a dynamic symbol. |
| 1957 | Undefined weak syms won't yet be marked as dynamic. */ |
| 1958 | if (h->dynindx == -1 |
| 1959 | && !h->forced_local) |
| 1960 | { |
| 1961 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1962 | return FALSE; |
| 1963 | } |
| 1964 | |
| 1965 | s = htab->sgot; |
| 1966 | h->got.offset = s->size; |
| 1967 | s->size += SPARC_ELF_WORD_BYTES (htab); |
| 1968 | /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */ |
| 1969 | if (tls_type == GOT_TLS_GD) |
| 1970 | s->size += SPARC_ELF_WORD_BYTES (htab); |
| 1971 | dyn = htab->elf.dynamic_sections_created; |
| 1972 | /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation, |
| 1973 | R_SPARC_TLS_GD_{HI22,LO10} needs one if local symbol and two if |
| 1974 | global. */ |
| 1975 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) |
| 1976 | || tls_type == GOT_TLS_IE) |
| 1977 | htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab); |
| 1978 | else if (tls_type == GOT_TLS_GD) |
| 1979 | htab->srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab); |
| 1980 | else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) |
| 1981 | htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab); |
| 1982 | } |
| 1983 | else |
| 1984 | h->got.offset = (bfd_vma) -1; |
| 1985 | |
| 1986 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; |
| 1987 | if (eh->dyn_relocs == NULL) |
| 1988 | return TRUE; |
| 1989 | |
| 1990 | /* In the shared -Bsymbolic case, discard space allocated for |
| 1991 | dynamic pc-relative relocs against symbols which turn out to be |
| 1992 | defined in regular objects. For the normal shared case, discard |
| 1993 | space for pc-relative relocs that have become local due to symbol |
| 1994 | visibility changes. */ |
| 1995 | |
| 1996 | if (info->shared) |
| 1997 | { |
| 1998 | if (h->def_regular |
| 1999 | && (h->forced_local |
| 2000 | || info->symbolic)) |
| 2001 | { |
| 2002 | struct _bfd_sparc_elf_dyn_relocs **pp; |
| 2003 | |
| 2004 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 2005 | { |
| 2006 | p->count -= p->pc_count; |
| 2007 | p->pc_count = 0; |
| 2008 | if (p->count == 0) |
| 2009 | *pp = p->next; |
| 2010 | else |
| 2011 | pp = &p->next; |
| 2012 | } |
| 2013 | } |
| 2014 | |
| 2015 | if (htab->is_vxworks) |
| 2016 | { |
| 2017 | struct _bfd_sparc_elf_dyn_relocs **pp; |
| 2018 | |
| 2019 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 2020 | { |
| 2021 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) |
| 2022 | *pp = p->next; |
| 2023 | else |
| 2024 | pp = &p->next; |
| 2025 | } |
| 2026 | } |
| 2027 | |
| 2028 | /* Also discard relocs on undefined weak syms with non-default |
| 2029 | visibility. */ |
| 2030 | if (eh->dyn_relocs != NULL |
| 2031 | && h->root.type == bfd_link_hash_undefweak) |
| 2032 | { |
| 2033 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 2034 | eh->dyn_relocs = NULL; |
| 2035 | |
| 2036 | /* Make sure undefined weak symbols are output as a dynamic |
| 2037 | symbol in PIEs. */ |
| 2038 | else if (h->dynindx == -1 |
| 2039 | && !h->forced_local) |
| 2040 | { |
| 2041 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2042 | return FALSE; |
| 2043 | } |
| 2044 | } |
| 2045 | } |
| 2046 | else |
| 2047 | { |
| 2048 | /* For the non-shared case, discard space for relocs against |
| 2049 | symbols which turn out to need copy relocs or are not |
| 2050 | dynamic. */ |
| 2051 | |
| 2052 | if (!h->non_got_ref |
| 2053 | && ((h->def_dynamic |
| 2054 | && !h->def_regular) |
| 2055 | || (htab->elf.dynamic_sections_created |
| 2056 | && (h->root.type == bfd_link_hash_undefweak |
| 2057 | || h->root.type == bfd_link_hash_undefined)))) |
| 2058 | { |
| 2059 | /* Make sure this symbol is output as a dynamic symbol. |
| 2060 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2061 | if (h->dynindx == -1 |
| 2062 | && !h->forced_local) |
| 2063 | { |
| 2064 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2065 | return FALSE; |
| 2066 | } |
| 2067 | |
| 2068 | /* If that succeeded, we know we'll be keeping all the |
| 2069 | relocs. */ |
| 2070 | if (h->dynindx != -1) |
| 2071 | goto keep; |
| 2072 | } |
| 2073 | |
| 2074 | eh->dyn_relocs = NULL; |
| 2075 | |
| 2076 | keep: ; |
| 2077 | } |
| 2078 | |
| 2079 | /* Finally, allocate space. */ |
| 2080 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2081 | { |
| 2082 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 2083 | sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab); |
| 2084 | } |
| 2085 | |
| 2086 | return TRUE; |
| 2087 | } |
| 2088 | |
| 2089 | /* Find any dynamic relocs that apply to read-only sections. */ |
| 2090 | |
| 2091 | static bfd_boolean |
| 2092 | readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) |
| 2093 | { |
| 2094 | struct _bfd_sparc_elf_link_hash_entry *eh; |
| 2095 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 2096 | |
| 2097 | if (h->root.type == bfd_link_hash_warning) |
| 2098 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2099 | |
| 2100 | eh = (struct _bfd_sparc_elf_link_hash_entry *) h; |
| 2101 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2102 | { |
| 2103 | asection *s = p->sec->output_section; |
| 2104 | |
| 2105 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 2106 | { |
| 2107 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 2108 | |
| 2109 | info->flags |= DF_TEXTREL; |
| 2110 | |
| 2111 | /* Not an error, just cut short the traversal. */ |
| 2112 | return FALSE; |
| 2113 | } |
| 2114 | } |
| 2115 | return TRUE; |
| 2116 | } |
| 2117 | |
| 2118 | /* Return true if the dynamic symbol for a given section should be |
| 2119 | omitted when creating a shared library. */ |
| 2120 | |
| 2121 | bfd_boolean |
| 2122 | _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd, |
| 2123 | struct bfd_link_info *info, |
| 2124 | asection *p) |
| 2125 | { |
| 2126 | /* We keep the .got section symbol so that explicit relocations |
| 2127 | against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode |
| 2128 | can be turned into relocations against the .got symbol. */ |
| 2129 | if (strcmp (p->name, ".got") == 0) |
| 2130 | return FALSE; |
| 2131 | |
| 2132 | return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); |
| 2133 | } |
| 2134 | |
| 2135 | /* Set the sizes of the dynamic sections. */ |
| 2136 | |
| 2137 | bfd_boolean |
| 2138 | _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd, |
| 2139 | struct bfd_link_info *info) |
| 2140 | { |
| 2141 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 2142 | bfd *dynobj; |
| 2143 | asection *s; |
| 2144 | bfd *ibfd; |
| 2145 | |
| 2146 | htab = _bfd_sparc_elf_hash_table (info); |
| 2147 | dynobj = htab->elf.dynobj; |
| 2148 | BFD_ASSERT (dynobj != NULL); |
| 2149 | |
| 2150 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2151 | { |
| 2152 | /* Set the contents of the .interp section to the interpreter. */ |
| 2153 | if (info->executable) |
| 2154 | { |
| 2155 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 2156 | BFD_ASSERT (s != NULL); |
| 2157 | s->size = htab->dynamic_interpreter_size; |
| 2158 | s->contents = (unsigned char *) htab->dynamic_interpreter; |
| 2159 | } |
| 2160 | } |
| 2161 | |
| 2162 | /* Set up .got offsets for local syms, and space for local dynamic |
| 2163 | relocs. */ |
| 2164 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 2165 | { |
| 2166 | bfd_signed_vma *local_got; |
| 2167 | bfd_signed_vma *end_local_got; |
| 2168 | char *local_tls_type; |
| 2169 | bfd_size_type locsymcount; |
| 2170 | Elf_Internal_Shdr *symtab_hdr; |
| 2171 | asection *srel; |
| 2172 | |
| 2173 | if (! is_sparc_elf (ibfd)) |
| 2174 | continue; |
| 2175 | |
| 2176 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 2177 | { |
| 2178 | struct _bfd_sparc_elf_dyn_relocs *p; |
| 2179 | |
| 2180 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 2181 | { |
| 2182 | if (!bfd_is_abs_section (p->sec) |
| 2183 | && bfd_is_abs_section (p->sec->output_section)) |
| 2184 | { |
| 2185 | /* Input section has been discarded, either because |
| 2186 | it is a copy of a linkonce section or due to |
| 2187 | linker script /DISCARD/, so we'll be discarding |
| 2188 | the relocs too. */ |
| 2189 | } |
| 2190 | else if (htab->is_vxworks |
| 2191 | && strcmp (p->sec->output_section->name, |
| 2192 | ".tls_vars") == 0) |
| 2193 | { |
| 2194 | /* Relocations in vxworks .tls_vars sections are |
| 2195 | handled specially by the loader. */ |
| 2196 | } |
| 2197 | else if (p->count != 0) |
| 2198 | { |
| 2199 | srel = elf_section_data (p->sec)->sreloc; |
| 2200 | srel->size += p->count * SPARC_ELF_RELA_BYTES (htab); |
| 2201 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 2202 | info->flags |= DF_TEXTREL; |
| 2203 | } |
| 2204 | } |
| 2205 | } |
| 2206 | |
| 2207 | local_got = elf_local_got_refcounts (ibfd); |
| 2208 | if (!local_got) |
| 2209 | continue; |
| 2210 | |
| 2211 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 2212 | locsymcount = symtab_hdr->sh_info; |
| 2213 | end_local_got = local_got + locsymcount; |
| 2214 | local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd); |
| 2215 | s = htab->sgot; |
| 2216 | srel = htab->srelgot; |
| 2217 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
| 2218 | { |
| 2219 | if (*local_got > 0) |
| 2220 | { |
| 2221 | *local_got = s->size; |
| 2222 | s->size += SPARC_ELF_WORD_BYTES (htab); |
| 2223 | if (*local_tls_type == GOT_TLS_GD) |
| 2224 | s->size += SPARC_ELF_WORD_BYTES (htab); |
| 2225 | if (info->shared |
| 2226 | || *local_tls_type == GOT_TLS_GD |
| 2227 | || *local_tls_type == GOT_TLS_IE) |
| 2228 | srel->size += SPARC_ELF_RELA_BYTES (htab); |
| 2229 | } |
| 2230 | else |
| 2231 | *local_got = (bfd_vma) -1; |
| 2232 | } |
| 2233 | } |
| 2234 | |
| 2235 | if (htab->tls_ldm_got.refcount > 0) |
| 2236 | { |
| 2237 | /* Allocate 2 got entries and 1 dynamic reloc for |
| 2238 | R_SPARC_TLS_LDM_{HI22,LO10} relocs. */ |
| 2239 | htab->tls_ldm_got.offset = htab->sgot->size; |
| 2240 | htab->sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab)); |
| 2241 | htab->srelgot->size += SPARC_ELF_RELA_BYTES (htab); |
| 2242 | } |
| 2243 | else |
| 2244 | htab->tls_ldm_got.offset = -1; |
| 2245 | |
| 2246 | /* Allocate global sym .plt and .got entries, and space for global |
| 2247 | sym dynamic relocs. */ |
| 2248 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
| 2249 | |
| 2250 | if (! ABI_64_P (output_bfd) |
| 2251 | && !htab->is_vxworks |
| 2252 | && elf_hash_table (info)->dynamic_sections_created) |
| 2253 | { |
| 2254 | /* Make space for the trailing nop in .plt. */ |
| 2255 | if (htab->splt->size > 0) |
| 2256 | htab->splt->size += 1 * SPARC_INSN_BYTES; |
| 2257 | |
| 2258 | /* If the .got section is more than 0x1000 bytes, we add |
| 2259 | 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 |
| 2260 | bit relocations have a greater chance of working. |
| 2261 | |
| 2262 | FIXME: Make this optimization work for 64-bit too. */ |
| 2263 | if (htab->sgot->size >= 0x1000 |
| 2264 | && elf_hash_table (info)->hgot->root.u.def.value == 0) |
| 2265 | elf_hash_table (info)->hgot->root.u.def.value = 0x1000; |
| 2266 | } |
| 2267 | |
| 2268 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 2269 | determined the sizes of the various dynamic sections. Allocate |
| 2270 | memory for them. */ |
| 2271 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 2272 | { |
| 2273 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 2274 | continue; |
| 2275 | |
| 2276 | if (s == htab->splt |
| 2277 | || s == htab->sgot |
| 2278 | || s == htab->sdynbss |
| 2279 | || s == htab->sgotplt) |
| 2280 | { |
| 2281 | /* Strip this section if we don't need it; see the |
| 2282 | comment below. */ |
| 2283 | } |
| 2284 | else if (CONST_STRNEQ (s->name, ".rela")) |
| 2285 | { |
| 2286 | if (s->size != 0) |
| 2287 | { |
| 2288 | /* We use the reloc_count field as a counter if we need |
| 2289 | to copy relocs into the output file. */ |
| 2290 | s->reloc_count = 0; |
| 2291 | } |
| 2292 | } |
| 2293 | else |
| 2294 | { |
| 2295 | /* It's not one of our sections. */ |
| 2296 | continue; |
| 2297 | } |
| 2298 | |
| 2299 | if (s->size == 0) |
| 2300 | { |
| 2301 | /* If we don't need this section, strip it from the |
| 2302 | output file. This is mostly to handle .rela.bss and |
| 2303 | .rela.plt. We must create both sections in |
| 2304 | create_dynamic_sections, because they must be created |
| 2305 | before the linker maps input sections to output |
| 2306 | sections. The linker does that before |
| 2307 | adjust_dynamic_symbol is called, and it is that |
| 2308 | function which decides whether anything needs to go |
| 2309 | into these sections. */ |
| 2310 | s->flags |= SEC_EXCLUDE; |
| 2311 | continue; |
| 2312 | } |
| 2313 | |
| 2314 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 2315 | continue; |
| 2316 | |
| 2317 | /* Allocate memory for the section contents. Zero the memory |
| 2318 | for the benefit of .rela.plt, which has 4 unused entries |
| 2319 | at the beginning, and we don't want garbage. */ |
| 2320 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 2321 | if (s->contents == NULL) |
| 2322 | return FALSE; |
| 2323 | } |
| 2324 | |
| 2325 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2326 | { |
| 2327 | /* Add some entries to the .dynamic section. We fill in the |
| 2328 | values later, in _bfd_sparc_elf_finish_dynamic_sections, but we |
| 2329 | must add the entries now so that we get the correct size for |
| 2330 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 2331 | dynamic linker and used by the debugger. */ |
| 2332 | #define add_dynamic_entry(TAG, VAL) \ |
| 2333 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 2334 | |
| 2335 | if (info->executable) |
| 2336 | { |
| 2337 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 2338 | return FALSE; |
| 2339 | } |
| 2340 | |
| 2341 | if (htab->srelplt->size != 0) |
| 2342 | { |
| 2343 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 2344 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2345 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2346 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 2347 | return FALSE; |
| 2348 | } |
| 2349 | |
| 2350 | if (!add_dynamic_entry (DT_RELA, 0) |
| 2351 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 2352 | || !add_dynamic_entry (DT_RELAENT, |
| 2353 | SPARC_ELF_RELA_BYTES (htab))) |
| 2354 | return FALSE; |
| 2355 | |
| 2356 | /* If any dynamic relocs apply to a read-only section, |
| 2357 | then we need a DT_TEXTREL entry. */ |
| 2358 | if ((info->flags & DF_TEXTREL) == 0) |
| 2359 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, |
| 2360 | (PTR) info); |
| 2361 | |
| 2362 | if (info->flags & DF_TEXTREL) |
| 2363 | { |
| 2364 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 2365 | return FALSE; |
| 2366 | } |
| 2367 | |
| 2368 | if (ABI_64_P (output_bfd)) |
| 2369 | { |
| 2370 | int reg; |
| 2371 | struct _bfd_sparc_elf_app_reg * app_regs; |
| 2372 | struct elf_strtab_hash *dynstr; |
| 2373 | struct elf_link_hash_table *eht = elf_hash_table (info); |
| 2374 | |
| 2375 | /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER |
| 2376 | entries if needed. */ |
| 2377 | app_regs = _bfd_sparc_elf_hash_table (info)->app_regs; |
| 2378 | dynstr = eht->dynstr; |
| 2379 | |
| 2380 | for (reg = 0; reg < 4; reg++) |
| 2381 | if (app_regs [reg].name != NULL) |
| 2382 | { |
| 2383 | struct elf_link_local_dynamic_entry *entry, *e; |
| 2384 | |
| 2385 | if (!add_dynamic_entry (DT_SPARC_REGISTER, 0)) |
| 2386 | return FALSE; |
| 2387 | |
| 2388 | entry = (struct elf_link_local_dynamic_entry *) |
| 2389 | bfd_hash_allocate (&info->hash->table, sizeof (*entry)); |
| 2390 | if (entry == NULL) |
| 2391 | return FALSE; |
| 2392 | |
| 2393 | /* We cheat here a little bit: the symbol will not be local, so we |
| 2394 | put it at the end of the dynlocal linked list. We will fix it |
| 2395 | later on, as we have to fix other fields anyway. */ |
| 2396 | entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; |
| 2397 | entry->isym.st_size = 0; |
| 2398 | if (*app_regs [reg].name != '\0') |
| 2399 | entry->isym.st_name |
| 2400 | = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE); |
| 2401 | else |
| 2402 | entry->isym.st_name = 0; |
| 2403 | entry->isym.st_other = 0; |
| 2404 | entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, |
| 2405 | STT_REGISTER); |
| 2406 | entry->isym.st_shndx = app_regs [reg].shndx; |
| 2407 | entry->next = NULL; |
| 2408 | entry->input_bfd = output_bfd; |
| 2409 | entry->input_indx = -1; |
| 2410 | |
| 2411 | if (eht->dynlocal == NULL) |
| 2412 | eht->dynlocal = entry; |
| 2413 | else |
| 2414 | { |
| 2415 | for (e = eht->dynlocal; e->next; e = e->next) |
| 2416 | ; |
| 2417 | e->next = entry; |
| 2418 | } |
| 2419 | eht->dynsymcount++; |
| 2420 | } |
| 2421 | } |
| 2422 | if (htab->is_vxworks |
| 2423 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) |
| 2424 | return FALSE; |
| 2425 | } |
| 2426 | #undef add_dynamic_entry |
| 2427 | |
| 2428 | return TRUE; |
| 2429 | } |
| 2430 | \f |
| 2431 | bfd_boolean |
| 2432 | _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec) |
| 2433 | { |
| 2434 | if (!sec->used_by_bfd) |
| 2435 | { |
| 2436 | struct _bfd_sparc_elf_section_data *sdata; |
| 2437 | bfd_size_type amt = sizeof (*sdata); |
| 2438 | |
| 2439 | sdata = bfd_zalloc (abfd, amt); |
| 2440 | if (sdata == NULL) |
| 2441 | return FALSE; |
| 2442 | sec->used_by_bfd = sdata; |
| 2443 | } |
| 2444 | |
| 2445 | return _bfd_elf_new_section_hook (abfd, sec); |
| 2446 | } |
| 2447 | |
| 2448 | bfd_boolean |
| 2449 | _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED, |
| 2450 | struct bfd_section *section, |
| 2451 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| 2452 | bfd_boolean *again) |
| 2453 | { |
| 2454 | if (link_info->relocatable) |
| 2455 | (*link_info->callbacks->einfo) |
| 2456 | (_("%P%F: --relax and -r may not be used together\n")); |
| 2457 | |
| 2458 | *again = FALSE; |
| 2459 | sec_do_relax (section) = 1; |
| 2460 | return TRUE; |
| 2461 | } |
| 2462 | \f |
| 2463 | /* Return the base VMA address which should be subtracted from real addresses |
| 2464 | when resolving @dtpoff relocation. |
| 2465 | This is PT_TLS segment p_vaddr. */ |
| 2466 | |
| 2467 | static bfd_vma |
| 2468 | dtpoff_base (struct bfd_link_info *info) |
| 2469 | { |
| 2470 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 2471 | if (elf_hash_table (info)->tls_sec == NULL) |
| 2472 | return 0; |
| 2473 | return elf_hash_table (info)->tls_sec->vma; |
| 2474 | } |
| 2475 | |
| 2476 | /* Return the relocation value for @tpoff relocation |
| 2477 | if STT_TLS virtual address is ADDRESS. */ |
| 2478 | |
| 2479 | static bfd_vma |
| 2480 | tpoff (struct bfd_link_info *info, bfd_vma address) |
| 2481 | { |
| 2482 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| 2483 | |
| 2484 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 2485 | if (htab->tls_sec == NULL) |
| 2486 | return 0; |
| 2487 | return address - htab->tls_size - htab->tls_sec->vma; |
| 2488 | } |
| 2489 | |
| 2490 | /* Relocate a SPARC ELF section. */ |
| 2491 | |
| 2492 | bfd_boolean |
| 2493 | _bfd_sparc_elf_relocate_section (bfd *output_bfd, |
| 2494 | struct bfd_link_info *info, |
| 2495 | bfd *input_bfd, |
| 2496 | asection *input_section, |
| 2497 | bfd_byte *contents, |
| 2498 | Elf_Internal_Rela *relocs, |
| 2499 | Elf_Internal_Sym *local_syms, |
| 2500 | asection **local_sections) |
| 2501 | { |
| 2502 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 2503 | Elf_Internal_Shdr *symtab_hdr; |
| 2504 | struct elf_link_hash_entry **sym_hashes; |
| 2505 | bfd_vma *local_got_offsets; |
| 2506 | bfd_vma got_base; |
| 2507 | asection *sreloc; |
| 2508 | Elf_Internal_Rela *rel; |
| 2509 | Elf_Internal_Rela *relend; |
| 2510 | int num_relocs; |
| 2511 | bfd_boolean is_vxworks_tls; |
| 2512 | |
| 2513 | htab = _bfd_sparc_elf_hash_table (info); |
| 2514 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 2515 | sym_hashes = elf_sym_hashes (input_bfd); |
| 2516 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 2517 | |
| 2518 | if (elf_hash_table (info)->hgot == NULL) |
| 2519 | got_base = 0; |
| 2520 | else |
| 2521 | got_base = elf_hash_table (info)->hgot->root.u.def.value; |
| 2522 | |
| 2523 | sreloc = elf_section_data (input_section)->sreloc; |
| 2524 | /* We have to handle relocations in vxworks .tls_vars sections |
| 2525 | specially, because the dynamic loader is 'weird'. */ |
| 2526 | is_vxworks_tls = (htab->is_vxworks && info->shared |
| 2527 | && !strcmp (input_section->output_section->name, |
| 2528 | ".tls_vars")); |
| 2529 | |
| 2530 | rel = relocs; |
| 2531 | if (ABI_64_P (output_bfd)) |
| 2532 | num_relocs = NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr); |
| 2533 | else |
| 2534 | num_relocs = input_section->reloc_count; |
| 2535 | relend = relocs + num_relocs; |
| 2536 | for (; rel < relend; rel++) |
| 2537 | { |
| 2538 | int r_type, tls_type; |
| 2539 | reloc_howto_type *howto; |
| 2540 | unsigned long r_symndx; |
| 2541 | struct elf_link_hash_entry *h; |
| 2542 | Elf_Internal_Sym *sym; |
| 2543 | asection *sec; |
| 2544 | bfd_vma relocation, off; |
| 2545 | bfd_reloc_status_type r; |
| 2546 | bfd_boolean is_plt = FALSE; |
| 2547 | bfd_boolean unresolved_reloc; |
| 2548 | |
| 2549 | r_type = SPARC_ELF_R_TYPE (rel->r_info); |
| 2550 | if (r_type == R_SPARC_GNU_VTINHERIT |
| 2551 | || r_type == R_SPARC_GNU_VTENTRY) |
| 2552 | continue; |
| 2553 | |
| 2554 | if (r_type < 0 || r_type >= (int) R_SPARC_max_std) |
| 2555 | { |
| 2556 | bfd_set_error (bfd_error_bad_value); |
| 2557 | return FALSE; |
| 2558 | } |
| 2559 | howto = _bfd_sparc_elf_howto_table + r_type; |
| 2560 | |
| 2561 | r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info); |
| 2562 | h = NULL; |
| 2563 | sym = NULL; |
| 2564 | sec = NULL; |
| 2565 | unresolved_reloc = FALSE; |
| 2566 | if (r_symndx < symtab_hdr->sh_info) |
| 2567 | { |
| 2568 | sym = local_syms + r_symndx; |
| 2569 | sec = local_sections[r_symndx]; |
| 2570 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 2571 | } |
| 2572 | else |
| 2573 | { |
| 2574 | bfd_boolean warned; |
| 2575 | |
| 2576 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 2577 | r_symndx, symtab_hdr, sym_hashes, |
| 2578 | h, sec, relocation, |
| 2579 | unresolved_reloc, warned); |
| 2580 | if (warned) |
| 2581 | { |
| 2582 | /* To avoid generating warning messages about truncated |
| 2583 | relocations, set the relocation's address to be the same as |
| 2584 | the start of this section. */ |
| 2585 | if (input_section->output_section != NULL) |
| 2586 | relocation = input_section->output_section->vma; |
| 2587 | else |
| 2588 | relocation = 0; |
| 2589 | } |
| 2590 | } |
| 2591 | |
| 2592 | if (sec != NULL && elf_discarded_section (sec)) |
| 2593 | { |
| 2594 | /* For relocs against symbols from removed linkonce |
| 2595 | sections, or sections discarded by a linker script, we |
| 2596 | just want the section contents zeroed. Avoid any |
| 2597 | special processing. */ |
| 2598 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 2599 | rel->r_info = 0; |
| 2600 | rel->r_addend = 0; |
| 2601 | continue; |
| 2602 | } |
| 2603 | |
| 2604 | if (info->relocatable) |
| 2605 | continue; |
| 2606 | |
| 2607 | switch (r_type) |
| 2608 | { |
| 2609 | case R_SPARC_GOTDATA_HIX22: |
| 2610 | case R_SPARC_GOTDATA_LOX10: |
| 2611 | case R_SPARC_GOTDATA_OP_HIX22: |
| 2612 | case R_SPARC_GOTDATA_OP_LOX10: |
| 2613 | /* We don't support these code transformation optimizations |
| 2614 | yet, so just leave the sequence alone and treat as |
| 2615 | GOT22/GOT10. */ |
| 2616 | if (r_type == R_SPARC_GOTDATA_HIX22 |
| 2617 | || r_type == R_SPARC_GOTDATA_OP_HIX22) |
| 2618 | r_type = R_SPARC_GOT22; |
| 2619 | else |
| 2620 | r_type = R_SPARC_GOT10; |
| 2621 | /* Fall through. */ |
| 2622 | |
| 2623 | case R_SPARC_GOT10: |
| 2624 | case R_SPARC_GOT13: |
| 2625 | case R_SPARC_GOT22: |
| 2626 | /* Relocation is to the entry for this symbol in the global |
| 2627 | offset table. */ |
| 2628 | if (htab->sgot == NULL) |
| 2629 | abort (); |
| 2630 | |
| 2631 | if (h != NULL) |
| 2632 | { |
| 2633 | bfd_boolean dyn; |
| 2634 | |
| 2635 | off = h->got.offset; |
| 2636 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2637 | dyn = elf_hash_table (info)->dynamic_sections_created; |
| 2638 | |
| 2639 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 2640 | || (info->shared |
| 2641 | && (info->symbolic |
| 2642 | || h->dynindx == -1 |
| 2643 | || h->forced_local) |
| 2644 | && h->def_regular)) |
| 2645 | { |
| 2646 | /* This is actually a static link, or it is a |
| 2647 | -Bsymbolic link and the symbol is defined |
| 2648 | locally, or the symbol was forced to be local |
| 2649 | because of a version file. We must initialize |
| 2650 | this entry in the global offset table. Since the |
| 2651 | offset must always be a multiple of 8 for 64-bit |
| 2652 | and 4 for 32-bit, we use the least significant bit |
| 2653 | to record whether we have initialized it already. |
| 2654 | |
| 2655 | When doing a dynamic link, we create a .rela.got |
| 2656 | relocation entry to initialize the value. This |
| 2657 | is done in the finish_dynamic_symbol routine. */ |
| 2658 | if ((off & 1) != 0) |
| 2659 | off &= ~1; |
| 2660 | else |
| 2661 | { |
| 2662 | SPARC_ELF_PUT_WORD (htab, output_bfd, relocation, |
| 2663 | htab->sgot->contents + off); |
| 2664 | h->got.offset |= 1; |
| 2665 | } |
| 2666 | } |
| 2667 | else |
| 2668 | unresolved_reloc = FALSE; |
| 2669 | } |
| 2670 | else |
| 2671 | { |
| 2672 | BFD_ASSERT (local_got_offsets != NULL |
| 2673 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 2674 | |
| 2675 | off = local_got_offsets[r_symndx]; |
| 2676 | |
| 2677 | /* The offset must always be a multiple of 8 on 64-bit and |
| 2678 | 4 on 32-bit. We use the least significant bit to record |
| 2679 | whether we have already processed this entry. */ |
| 2680 | if ((off & 1) != 0) |
| 2681 | off &= ~1; |
| 2682 | else |
| 2683 | { |
| 2684 | |
| 2685 | if (info->shared) |
| 2686 | { |
| 2687 | asection *s; |
| 2688 | Elf_Internal_Rela outrel; |
| 2689 | |
| 2690 | /* We need to generate a R_SPARC_RELATIVE reloc |
| 2691 | for the dynamic linker. */ |
| 2692 | s = htab->srelgot; |
| 2693 | BFD_ASSERT (s != NULL); |
| 2694 | |
| 2695 | outrel.r_offset = (htab->sgot->output_section->vma |
| 2696 | + htab->sgot->output_offset |
| 2697 | + off); |
| 2698 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, |
| 2699 | 0, R_SPARC_RELATIVE); |
| 2700 | outrel.r_addend = relocation; |
| 2701 | relocation = 0; |
| 2702 | sparc_elf_append_rela (output_bfd, s, &outrel); |
| 2703 | } |
| 2704 | |
| 2705 | SPARC_ELF_PUT_WORD (htab, output_bfd, relocation, |
| 2706 | htab->sgot->contents + off); |
| 2707 | local_got_offsets[r_symndx] |= 1; |
| 2708 | } |
| 2709 | } |
| 2710 | relocation = htab->sgot->output_offset + off - got_base; |
| 2711 | break; |
| 2712 | |
| 2713 | case R_SPARC_PLT32: |
| 2714 | case R_SPARC_PLT64: |
| 2715 | if (h == NULL || h->plt.offset == (bfd_vma) -1) |
| 2716 | { |
| 2717 | r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64; |
| 2718 | goto r_sparc_plt32; |
| 2719 | } |
| 2720 | /* Fall through. */ |
| 2721 | |
| 2722 | case R_SPARC_WPLT30: |
| 2723 | case R_SPARC_HIPLT22: |
| 2724 | case R_SPARC_LOPLT10: |
| 2725 | case R_SPARC_PCPLT32: |
| 2726 | case R_SPARC_PCPLT22: |
| 2727 | case R_SPARC_PCPLT10: |
| 2728 | r_sparc_wplt30: |
| 2729 | /* Relocation is to the entry for this symbol in the |
| 2730 | procedure linkage table. */ |
| 2731 | |
| 2732 | if (! ABI_64_P (output_bfd)) |
| 2733 | { |
| 2734 | /* The Solaris native assembler will generate a WPLT30 reloc |
| 2735 | for a local symbol if you assemble a call from one |
| 2736 | section to another when using -K pic. We treat it as |
| 2737 | WDISP30. */ |
| 2738 | if (h == NULL) |
| 2739 | break; |
| 2740 | } |
| 2741 | /* PR 7027: We need similar behaviour for 64-bit binaries. */ |
| 2742 | else if (r_type == R_SPARC_WPLT30 && h == NULL) |
| 2743 | break; |
| 2744 | else |
| 2745 | { |
| 2746 | BFD_ASSERT (h != NULL); |
| 2747 | } |
| 2748 | |
| 2749 | if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL) |
| 2750 | { |
| 2751 | /* We didn't make a PLT entry for this symbol. This |
| 2752 | happens when statically linking PIC code, or when |
| 2753 | using -Bsymbolic. */ |
| 2754 | break; |
| 2755 | } |
| 2756 | |
| 2757 | relocation = (htab->splt->output_section->vma |
| 2758 | + htab->splt->output_offset |
| 2759 | + h->plt.offset); |
| 2760 | unresolved_reloc = FALSE; |
| 2761 | if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) |
| 2762 | { |
| 2763 | r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; |
| 2764 | is_plt = TRUE; |
| 2765 | goto r_sparc_plt32; |
| 2766 | } |
| 2767 | break; |
| 2768 | |
| 2769 | case R_SPARC_PC10: |
| 2770 | case R_SPARC_PC22: |
| 2771 | case R_SPARC_PC_HH22: |
| 2772 | case R_SPARC_PC_HM10: |
| 2773 | case R_SPARC_PC_LM22: |
| 2774 | if (h != NULL |
| 2775 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 2776 | break; |
| 2777 | /* Fall through. */ |
| 2778 | case R_SPARC_DISP8: |
| 2779 | case R_SPARC_DISP16: |
| 2780 | case R_SPARC_DISP32: |
| 2781 | case R_SPARC_DISP64: |
| 2782 | case R_SPARC_WDISP30: |
| 2783 | case R_SPARC_WDISP22: |
| 2784 | case R_SPARC_WDISP19: |
| 2785 | case R_SPARC_WDISP16: |
| 2786 | case R_SPARC_8: |
| 2787 | case R_SPARC_16: |
| 2788 | case R_SPARC_32: |
| 2789 | case R_SPARC_HI22: |
| 2790 | case R_SPARC_22: |
| 2791 | case R_SPARC_13: |
| 2792 | case R_SPARC_LO10: |
| 2793 | case R_SPARC_UA16: |
| 2794 | case R_SPARC_UA32: |
| 2795 | case R_SPARC_10: |
| 2796 | case R_SPARC_11: |
| 2797 | case R_SPARC_64: |
| 2798 | case R_SPARC_OLO10: |
| 2799 | case R_SPARC_HH22: |
| 2800 | case R_SPARC_HM10: |
| 2801 | case R_SPARC_LM22: |
| 2802 | case R_SPARC_7: |
| 2803 | case R_SPARC_5: |
| 2804 | case R_SPARC_6: |
| 2805 | case R_SPARC_HIX22: |
| 2806 | case R_SPARC_LOX10: |
| 2807 | case R_SPARC_H44: |
| 2808 | case R_SPARC_M44: |
| 2809 | case R_SPARC_L44: |
| 2810 | case R_SPARC_UA64: |
| 2811 | r_sparc_plt32: |
| 2812 | if ((input_section->flags & SEC_ALLOC) == 0 |
| 2813 | || is_vxworks_tls) |
| 2814 | break; |
| 2815 | |
| 2816 | if ((info->shared |
| 2817 | && (h == NULL |
| 2818 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 2819 | || h->root.type != bfd_link_hash_undefweak) |
| 2820 | && (! howto->pc_relative |
| 2821 | || (h != NULL |
| 2822 | && h->dynindx != -1 |
| 2823 | && (! info->symbolic |
| 2824 | || !h->def_regular)))) |
| 2825 | || (!info->shared |
| 2826 | && h != NULL |
| 2827 | && h->dynindx != -1 |
| 2828 | && !h->non_got_ref |
| 2829 | && ((h->def_dynamic |
| 2830 | && !h->def_regular) |
| 2831 | || h->root.type == bfd_link_hash_undefweak |
| 2832 | || h->root.type == bfd_link_hash_undefined))) |
| 2833 | { |
| 2834 | Elf_Internal_Rela outrel; |
| 2835 | bfd_boolean skip, relocate = FALSE; |
| 2836 | |
| 2837 | /* When generating a shared object, these relocations |
| 2838 | are copied into the output file to be resolved at run |
| 2839 | time. */ |
| 2840 | |
| 2841 | BFD_ASSERT (sreloc != NULL); |
| 2842 | |
| 2843 | skip = FALSE; |
| 2844 | |
| 2845 | outrel.r_offset = |
| 2846 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 2847 | rel->r_offset); |
| 2848 | if (outrel.r_offset == (bfd_vma) -1) |
| 2849 | skip = TRUE; |
| 2850 | else if (outrel.r_offset == (bfd_vma) -2) |
| 2851 | skip = TRUE, relocate = TRUE; |
| 2852 | outrel.r_offset += (input_section->output_section->vma |
| 2853 | + input_section->output_offset); |
| 2854 | |
| 2855 | /* Optimize unaligned reloc usage now that we know where |
| 2856 | it finally resides. */ |
| 2857 | switch (r_type) |
| 2858 | { |
| 2859 | case R_SPARC_16: |
| 2860 | if (outrel.r_offset & 1) |
| 2861 | r_type = R_SPARC_UA16; |
| 2862 | break; |
| 2863 | case R_SPARC_UA16: |
| 2864 | if (!(outrel.r_offset & 1)) |
| 2865 | r_type = R_SPARC_16; |
| 2866 | break; |
| 2867 | case R_SPARC_32: |
| 2868 | if (outrel.r_offset & 3) |
| 2869 | r_type = R_SPARC_UA32; |
| 2870 | break; |
| 2871 | case R_SPARC_UA32: |
| 2872 | if (!(outrel.r_offset & 3)) |
| 2873 | r_type = R_SPARC_32; |
| 2874 | break; |
| 2875 | case R_SPARC_64: |
| 2876 | if (outrel.r_offset & 7) |
| 2877 | r_type = R_SPARC_UA64; |
| 2878 | break; |
| 2879 | case R_SPARC_UA64: |
| 2880 | if (!(outrel.r_offset & 7)) |
| 2881 | r_type = R_SPARC_64; |
| 2882 | break; |
| 2883 | case R_SPARC_DISP8: |
| 2884 | case R_SPARC_DISP16: |
| 2885 | case R_SPARC_DISP32: |
| 2886 | case R_SPARC_DISP64: |
| 2887 | /* If the symbol is not dynamic, we should not keep |
| 2888 | a dynamic relocation. But an .rela.* slot has been |
| 2889 | allocated for it, output R_SPARC_NONE. |
| 2890 | FIXME: Add code tracking needed dynamic relocs as |
| 2891 | e.g. i386 has. */ |
| 2892 | if (h->dynindx == -1) |
| 2893 | skip = TRUE, relocate = TRUE; |
| 2894 | break; |
| 2895 | } |
| 2896 | |
| 2897 | if (skip) |
| 2898 | memset (&outrel, 0, sizeof outrel); |
| 2899 | /* h->dynindx may be -1 if the symbol was marked to |
| 2900 | become local. */ |
| 2901 | else if (h != NULL && ! is_plt |
| 2902 | && ((! info->symbolic && h->dynindx != -1) |
| 2903 | || !h->def_regular)) |
| 2904 | { |
| 2905 | BFD_ASSERT (h->dynindx != -1); |
| 2906 | outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type); |
| 2907 | outrel.r_addend = rel->r_addend; |
| 2908 | } |
| 2909 | else |
| 2910 | { |
| 2911 | if (r_type == R_SPARC_32 || r_type == R_SPARC_64) |
| 2912 | { |
| 2913 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, |
| 2914 | 0, R_SPARC_RELATIVE); |
| 2915 | outrel.r_addend = relocation + rel->r_addend; |
| 2916 | } |
| 2917 | else |
| 2918 | { |
| 2919 | long indx; |
| 2920 | |
| 2921 | outrel.r_addend = relocation + rel->r_addend; |
| 2922 | |
| 2923 | if (is_plt) |
| 2924 | sec = htab->splt; |
| 2925 | |
| 2926 | if (bfd_is_abs_section (sec)) |
| 2927 | indx = 0; |
| 2928 | else if (sec == NULL || sec->owner == NULL) |
| 2929 | { |
| 2930 | bfd_set_error (bfd_error_bad_value); |
| 2931 | return FALSE; |
| 2932 | } |
| 2933 | else |
| 2934 | { |
| 2935 | asection *osec; |
| 2936 | |
| 2937 | /* We are turning this relocation into one |
| 2938 | against a section symbol. It would be |
| 2939 | proper to subtract the symbol's value, |
| 2940 | osec->vma, from the emitted reloc addend, |
| 2941 | but ld.so expects buggy relocs. */ |
| 2942 | osec = sec->output_section; |
| 2943 | indx = elf_section_data (osec)->dynindx; |
| 2944 | |
| 2945 | if (indx == 0) |
| 2946 | { |
| 2947 | osec = htab->elf.text_index_section; |
| 2948 | indx = elf_section_data (osec)->dynindx; |
| 2949 | } |
| 2950 | |
| 2951 | /* FIXME: we really should be able to link non-pic |
| 2952 | shared libraries. */ |
| 2953 | if (indx == 0) |
| 2954 | { |
| 2955 | BFD_FAIL (); |
| 2956 | (*_bfd_error_handler) |
| 2957 | (_("%B: probably compiled without -fPIC?"), |
| 2958 | input_bfd); |
| 2959 | bfd_set_error (bfd_error_bad_value); |
| 2960 | return FALSE; |
| 2961 | } |
| 2962 | } |
| 2963 | |
| 2964 | outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx, |
| 2965 | r_type); |
| 2966 | } |
| 2967 | } |
| 2968 | |
| 2969 | sparc_elf_append_rela (output_bfd, sreloc, &outrel); |
| 2970 | |
| 2971 | /* This reloc will be computed at runtime, so there's no |
| 2972 | need to do anything now. */ |
| 2973 | if (! relocate) |
| 2974 | continue; |
| 2975 | } |
| 2976 | break; |
| 2977 | |
| 2978 | case R_SPARC_TLS_GD_HI22: |
| 2979 | if (! ABI_64_P (input_bfd) |
| 2980 | && ! _bfd_sparc_elf_tdata (input_bfd)->has_tlsgd) |
| 2981 | { |
| 2982 | /* R_SPARC_REV32 used the same reloc number as |
| 2983 | R_SPARC_TLS_GD_HI22. */ |
| 2984 | r_type = R_SPARC_REV32; |
| 2985 | break; |
| 2986 | } |
| 2987 | /* Fall through */ |
| 2988 | |
| 2989 | case R_SPARC_TLS_GD_LO10: |
| 2990 | case R_SPARC_TLS_IE_HI22: |
| 2991 | case R_SPARC_TLS_IE_LO10: |
| 2992 | r_type = sparc_elf_tls_transition (info, input_bfd, r_type, h == NULL); |
| 2993 | tls_type = GOT_UNKNOWN; |
| 2994 | if (h == NULL && local_got_offsets) |
| 2995 | tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; |
| 2996 | else if (h != NULL) |
| 2997 | { |
| 2998 | tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; |
| 2999 | if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) |
| 3000 | switch (SPARC_ELF_R_TYPE (rel->r_info)) |
| 3001 | { |
| 3002 | case R_SPARC_TLS_GD_HI22: |
| 3003 | case R_SPARC_TLS_IE_HI22: |
| 3004 | r_type = R_SPARC_TLS_LE_HIX22; |
| 3005 | break; |
| 3006 | default: |
| 3007 | r_type = R_SPARC_TLS_LE_LOX10; |
| 3008 | break; |
| 3009 | } |
| 3010 | } |
| 3011 | if (tls_type == GOT_TLS_IE) |
| 3012 | switch (r_type) |
| 3013 | { |
| 3014 | case R_SPARC_TLS_GD_HI22: |
| 3015 | r_type = R_SPARC_TLS_IE_HI22; |
| 3016 | break; |
| 3017 | case R_SPARC_TLS_GD_LO10: |
| 3018 | r_type = R_SPARC_TLS_IE_LO10; |
| 3019 | break; |
| 3020 | } |
| 3021 | |
| 3022 | if (r_type == R_SPARC_TLS_LE_HIX22) |
| 3023 | { |
| 3024 | relocation = tpoff (info, relocation); |
| 3025 | break; |
| 3026 | } |
| 3027 | if (r_type == R_SPARC_TLS_LE_LOX10) |
| 3028 | { |
| 3029 | /* Change add into xor. */ |
| 3030 | relocation = tpoff (info, relocation); |
| 3031 | bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd, |
| 3032 | contents + rel->r_offset) |
| 3033 | | 0x80182000), contents + rel->r_offset); |
| 3034 | break; |
| 3035 | } |
| 3036 | |
| 3037 | if (h != NULL) |
| 3038 | { |
| 3039 | off = h->got.offset; |
| 3040 | h->got.offset |= 1; |
| 3041 | } |
| 3042 | else |
| 3043 | { |
| 3044 | BFD_ASSERT (local_got_offsets != NULL); |
| 3045 | off = local_got_offsets[r_symndx]; |
| 3046 | local_got_offsets[r_symndx] |= 1; |
| 3047 | } |
| 3048 | |
| 3049 | r_sparc_tlsldm: |
| 3050 | if (htab->sgot == NULL) |
| 3051 | abort (); |
| 3052 | |
| 3053 | if ((off & 1) != 0) |
| 3054 | off &= ~1; |
| 3055 | else |
| 3056 | { |
| 3057 | Elf_Internal_Rela outrel; |
| 3058 | int dr_type, indx; |
| 3059 | |
| 3060 | if (htab->srelgot == NULL) |
| 3061 | abort (); |
| 3062 | |
| 3063 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, htab->sgot->contents + off); |
| 3064 | outrel.r_offset = (htab->sgot->output_section->vma |
| 3065 | + htab->sgot->output_offset + off); |
| 3066 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
| 3067 | if (r_type == R_SPARC_TLS_IE_HI22 |
| 3068 | || r_type == R_SPARC_TLS_IE_LO10) |
| 3069 | dr_type = SPARC_ELF_TPOFF_RELOC (htab); |
| 3070 | else |
| 3071 | dr_type = SPARC_ELF_DTPMOD_RELOC (htab); |
| 3072 | if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0) |
| 3073 | outrel.r_addend = relocation - dtpoff_base (info); |
| 3074 | else |
| 3075 | outrel.r_addend = 0; |
| 3076 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type); |
| 3077 | sparc_elf_append_rela (output_bfd, htab->srelgot, &outrel); |
| 3078 | |
| 3079 | if (r_type == R_SPARC_TLS_GD_HI22 |
| 3080 | || r_type == R_SPARC_TLS_GD_LO10) |
| 3081 | { |
| 3082 | if (indx == 0) |
| 3083 | { |
| 3084 | BFD_ASSERT (! unresolved_reloc); |
| 3085 | SPARC_ELF_PUT_WORD (htab, output_bfd, |
| 3086 | relocation - dtpoff_base (info), |
| 3087 | (htab->sgot->contents + off |
| 3088 | + SPARC_ELF_WORD_BYTES (htab))); |
| 3089 | } |
| 3090 | else |
| 3091 | { |
| 3092 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, |
| 3093 | (htab->sgot->contents + off |
| 3094 | + SPARC_ELF_WORD_BYTES (htab))); |
| 3095 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, |
| 3096 | SPARC_ELF_DTPOFF_RELOC (htab)); |
| 3097 | outrel.r_offset += SPARC_ELF_WORD_BYTES (htab); |
| 3098 | sparc_elf_append_rela (output_bfd, htab->srelgot, |
| 3099 | &outrel); |
| 3100 | } |
| 3101 | } |
| 3102 | else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab)) |
| 3103 | { |
| 3104 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, |
| 3105 | (htab->sgot->contents + off |
| 3106 | + SPARC_ELF_WORD_BYTES (htab))); |
| 3107 | } |
| 3108 | } |
| 3109 | |
| 3110 | if (off >= (bfd_vma) -2) |
| 3111 | abort (); |
| 3112 | |
| 3113 | relocation = htab->sgot->output_offset + off - got_base; |
| 3114 | unresolved_reloc = FALSE; |
| 3115 | howto = _bfd_sparc_elf_howto_table + r_type; |
| 3116 | break; |
| 3117 | |
| 3118 | case R_SPARC_TLS_LDM_HI22: |
| 3119 | case R_SPARC_TLS_LDM_LO10: |
| 3120 | if (! info->shared) |
| 3121 | { |
| 3122 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); |
| 3123 | continue; |
| 3124 | } |
| 3125 | off = htab->tls_ldm_got.offset; |
| 3126 | htab->tls_ldm_got.offset |= 1; |
| 3127 | goto r_sparc_tlsldm; |
| 3128 | |
| 3129 | case R_SPARC_TLS_LDO_HIX22: |
| 3130 | case R_SPARC_TLS_LDO_LOX10: |
| 3131 | if (info->shared) |
| 3132 | { |
| 3133 | relocation -= dtpoff_base (info); |
| 3134 | break; |
| 3135 | } |
| 3136 | |
| 3137 | r_type = (r_type == R_SPARC_TLS_LDO_HIX22 |
| 3138 | ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_LE_LOX10); |
| 3139 | /* Fall through. */ |
| 3140 | |
| 3141 | case R_SPARC_TLS_LE_HIX22: |
| 3142 | case R_SPARC_TLS_LE_LOX10: |
| 3143 | if (info->shared) |
| 3144 | { |
| 3145 | Elf_Internal_Rela outrel; |
| 3146 | bfd_boolean skip, relocate = FALSE; |
| 3147 | |
| 3148 | BFD_ASSERT (sreloc != NULL); |
| 3149 | skip = FALSE; |
| 3150 | outrel.r_offset = |
| 3151 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 3152 | rel->r_offset); |
| 3153 | if (outrel.r_offset == (bfd_vma) -1) |
| 3154 | skip = TRUE; |
| 3155 | else if (outrel.r_offset == (bfd_vma) -2) |
| 3156 | skip = TRUE, relocate = TRUE; |
| 3157 | outrel.r_offset += (input_section->output_section->vma |
| 3158 | + input_section->output_offset); |
| 3159 | if (skip) |
| 3160 | memset (&outrel, 0, sizeof outrel); |
| 3161 | else |
| 3162 | { |
| 3163 | outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type); |
| 3164 | outrel.r_addend = relocation - dtpoff_base (info) |
| 3165 | + rel->r_addend; |
| 3166 | } |
| 3167 | |
| 3168 | sparc_elf_append_rela (output_bfd, sreloc, &outrel); |
| 3169 | continue; |
| 3170 | } |
| 3171 | relocation = tpoff (info, relocation); |
| 3172 | break; |
| 3173 | |
| 3174 | case R_SPARC_TLS_LDM_CALL: |
| 3175 | if (! info->shared) |
| 3176 | { |
| 3177 | /* mov %g0, %o0 */ |
| 3178 | bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset); |
| 3179 | continue; |
| 3180 | } |
| 3181 | /* Fall through */ |
| 3182 | |
| 3183 | case R_SPARC_TLS_GD_CALL: |
| 3184 | tls_type = GOT_UNKNOWN; |
| 3185 | if (h == NULL && local_got_offsets) |
| 3186 | tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; |
| 3187 | else if (h != NULL) |
| 3188 | tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; |
| 3189 | if (! info->shared |
| 3190 | || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE)) |
| 3191 | { |
| 3192 | bfd_vma insn; |
| 3193 | |
| 3194 | if (!info->shared && (h == NULL || h->dynindx == -1)) |
| 3195 | { |
| 3196 | /* GD -> LE */ |
| 3197 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); |
| 3198 | continue; |
| 3199 | } |
| 3200 | |
| 3201 | /* GD -> IE */ |
| 3202 | if (rel + 1 < relend |
| 3203 | && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD |
| 3204 | && rel[1].r_offset == rel->r_offset + 4 |
| 3205 | && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx |
| 3206 | && (((insn = bfd_get_32 (input_bfd, |
| 3207 | contents + rel[1].r_offset)) |
| 3208 | >> 25) & 0x1f) == 8) |
| 3209 | { |
| 3210 | /* We have |
| 3211 | call __tls_get_addr, %tgd_call(foo) |
| 3212 | add %reg1, %reg2, %o0, %tgd_add(foo) |
| 3213 | and change it into IE: |
| 3214 | {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo) |
| 3215 | add %g7, %o0, %o0, %tie_add(foo). |
| 3216 | add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2, |
| 3217 | ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2, |
| 3218 | ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */ |
| 3219 | bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000), |
| 3220 | contents + rel->r_offset); |
| 3221 | bfd_put_32 (output_bfd, 0x9001c008, |
| 3222 | contents + rel->r_offset + 4); |
| 3223 | rel++; |
| 3224 | continue; |
| 3225 | } |
| 3226 | |
| 3227 | bfd_put_32 (output_bfd, 0x9001c008, contents + rel->r_offset); |
| 3228 | continue; |
| 3229 | } |
| 3230 | |
| 3231 | h = (struct elf_link_hash_entry *) |
| 3232 | bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, |
| 3233 | FALSE, TRUE); |
| 3234 | BFD_ASSERT (h != NULL); |
| 3235 | r_type = R_SPARC_WPLT30; |
| 3236 | howto = _bfd_sparc_elf_howto_table + r_type; |
| 3237 | goto r_sparc_wplt30; |
| 3238 | |
| 3239 | case R_SPARC_TLS_GD_ADD: |
| 3240 | tls_type = GOT_UNKNOWN; |
| 3241 | if (h == NULL && local_got_offsets) |
| 3242 | tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx]; |
| 3243 | else if (h != NULL) |
| 3244 | tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type; |
| 3245 | if (! info->shared || tls_type == GOT_TLS_IE) |
| 3246 | { |
| 3247 | /* add %reg1, %reg2, %reg3, %tgd_add(foo) |
| 3248 | changed into IE: |
| 3249 | {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo) |
| 3250 | or LE: |
| 3251 | add %g7, %reg2, %reg3. */ |
| 3252 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3253 | if ((h != NULL && h->dynindx != -1) || info->shared) |
| 3254 | relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000); |
| 3255 | else |
| 3256 | relocation = (insn & ~0x7c000) | 0x1c000; |
| 3257 | bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); |
| 3258 | } |
| 3259 | continue; |
| 3260 | |
| 3261 | case R_SPARC_TLS_LDM_ADD: |
| 3262 | if (! info->shared) |
| 3263 | bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset); |
| 3264 | continue; |
| 3265 | |
| 3266 | case R_SPARC_TLS_LDO_ADD: |
| 3267 | if (! info->shared) |
| 3268 | { |
| 3269 | /* Change rs1 into %g7. */ |
| 3270 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3271 | insn = (insn & ~0x7c000) | 0x1c000; |
| 3272 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 3273 | } |
| 3274 | continue; |
| 3275 | |
| 3276 | case R_SPARC_GOTDATA_OP: |
| 3277 | /* We don't support gotdata code transformation optimizations |
| 3278 | yet, so simply leave the sequence as-is. */ |
| 3279 | continue; |
| 3280 | |
| 3281 | case R_SPARC_TLS_IE_LD: |
| 3282 | case R_SPARC_TLS_IE_LDX: |
| 3283 | if (! info->shared && (h == NULL || h->dynindx == -1)) |
| 3284 | { |
| 3285 | bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3286 | int rs2 = insn & 0x1f; |
| 3287 | int rd = (insn >> 25) & 0x1f; |
| 3288 | |
| 3289 | if (rs2 == rd) |
| 3290 | relocation = SPARC_NOP; |
| 3291 | else |
| 3292 | relocation = 0x80100000 | (insn & 0x3e00001f); |
| 3293 | bfd_put_32 (output_bfd, relocation, contents + rel->r_offset); |
| 3294 | } |
| 3295 | continue; |
| 3296 | |
| 3297 | case R_SPARC_TLS_IE_ADD: |
| 3298 | /* Totally useless relocation. */ |
| 3299 | continue; |
| 3300 | |
| 3301 | case R_SPARC_TLS_DTPOFF32: |
| 3302 | case R_SPARC_TLS_DTPOFF64: |
| 3303 | relocation -= dtpoff_base (info); |
| 3304 | break; |
| 3305 | |
| 3306 | default: |
| 3307 | break; |
| 3308 | } |
| 3309 | |
| 3310 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 3311 | because such sections are not SEC_ALLOC and thus ld.so will |
| 3312 | not process them. */ |
| 3313 | if (unresolved_reloc |
| 3314 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 3315 | && h->def_dynamic)) |
| 3316 | (*_bfd_error_handler) |
| 3317 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 3318 | input_bfd, |
| 3319 | input_section, |
| 3320 | (long) rel->r_offset, |
| 3321 | howto->name, |
| 3322 | h->root.root.string); |
| 3323 | |
| 3324 | r = bfd_reloc_continue; |
| 3325 | if (r_type == R_SPARC_OLO10) |
| 3326 | { |
| 3327 | bfd_vma x; |
| 3328 | |
| 3329 | if (! ABI_64_P (output_bfd)) |
| 3330 | abort (); |
| 3331 | |
| 3332 | relocation += rel->r_addend; |
| 3333 | relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); |
| 3334 | |
| 3335 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3336 | x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); |
| 3337 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3338 | |
| 3339 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 3340 | howto->bitsize, howto->rightshift, |
| 3341 | bfd_arch_bits_per_address (input_bfd), |
| 3342 | relocation); |
| 3343 | } |
| 3344 | else if (r_type == R_SPARC_WDISP16) |
| 3345 | { |
| 3346 | bfd_vma x; |
| 3347 | |
| 3348 | relocation += rel->r_addend; |
| 3349 | relocation -= (input_section->output_section->vma |
| 3350 | + input_section->output_offset); |
| 3351 | relocation -= rel->r_offset; |
| 3352 | |
| 3353 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3354 | x |= ((((relocation >> 2) & 0xc000) << 6) |
| 3355 | | ((relocation >> 2) & 0x3fff)); |
| 3356 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3357 | |
| 3358 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 3359 | howto->bitsize, howto->rightshift, |
| 3360 | bfd_arch_bits_per_address (input_bfd), |
| 3361 | relocation); |
| 3362 | } |
| 3363 | else if (r_type == R_SPARC_REV32) |
| 3364 | { |
| 3365 | bfd_vma x; |
| 3366 | |
| 3367 | relocation = relocation + rel->r_addend; |
| 3368 | |
| 3369 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3370 | x = x + relocation; |
| 3371 | bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset); |
| 3372 | r = bfd_reloc_ok; |
| 3373 | } |
| 3374 | else if (r_type == R_SPARC_TLS_LDO_HIX22 |
| 3375 | || r_type == R_SPARC_TLS_LE_HIX22) |
| 3376 | { |
| 3377 | bfd_vma x; |
| 3378 | |
| 3379 | relocation += rel->r_addend; |
| 3380 | if (r_type == R_SPARC_TLS_LE_HIX22) |
| 3381 | relocation ^= MINUS_ONE; |
| 3382 | |
| 3383 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3384 | x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 3385 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3386 | r = bfd_reloc_ok; |
| 3387 | } |
| 3388 | else if (r_type == R_SPARC_TLS_LDO_LOX10 |
| 3389 | || r_type == R_SPARC_TLS_LE_LOX10) |
| 3390 | { |
| 3391 | bfd_vma x; |
| 3392 | |
| 3393 | relocation += rel->r_addend; |
| 3394 | relocation &= 0x3ff; |
| 3395 | if (r_type == R_SPARC_TLS_LE_LOX10) |
| 3396 | relocation |= 0x1c00; |
| 3397 | |
| 3398 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3399 | x = (x & ~(bfd_vma) 0x1fff) | relocation; |
| 3400 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3401 | |
| 3402 | r = bfd_reloc_ok; |
| 3403 | } |
| 3404 | else if (r_type == R_SPARC_HIX22) |
| 3405 | { |
| 3406 | bfd_vma x; |
| 3407 | |
| 3408 | relocation += rel->r_addend; |
| 3409 | relocation = relocation ^ MINUS_ONE; |
| 3410 | |
| 3411 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3412 | x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); |
| 3413 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3414 | |
| 3415 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 3416 | howto->bitsize, howto->rightshift, |
| 3417 | bfd_arch_bits_per_address (input_bfd), |
| 3418 | relocation); |
| 3419 | } |
| 3420 | else if (r_type == R_SPARC_LOX10) |
| 3421 | { |
| 3422 | bfd_vma x; |
| 3423 | |
| 3424 | relocation += rel->r_addend; |
| 3425 | relocation = (relocation & 0x3ff) | 0x1c00; |
| 3426 | |
| 3427 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3428 | x = (x & ~(bfd_vma) 0x1fff) | relocation; |
| 3429 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3430 | |
| 3431 | r = bfd_reloc_ok; |
| 3432 | } |
| 3433 | else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30) |
| 3434 | && sec_do_relax (input_section) |
| 3435 | && rel->r_offset + 4 < input_section->size) |
| 3436 | { |
| 3437 | #define G0 0 |
| 3438 | #define O7 15 |
| 3439 | #define XCC (2 << 20) |
| 3440 | #define COND(x) (((x)&0xf)<<25) |
| 3441 | #define CONDA COND(0x8) |
| 3442 | #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) |
| 3443 | #define INSN_BA (F2(0,2) | CONDA) |
| 3444 | #define INSN_OR F3(2, 0x2, 0) |
| 3445 | #define INSN_NOP F2(0,4) |
| 3446 | |
| 3447 | bfd_vma x, y; |
| 3448 | |
| 3449 | /* If the instruction is a call with either: |
| 3450 | restore |
| 3451 | arithmetic instruction with rd == %o7 |
| 3452 | where rs1 != %o7 and rs2 if it is register != %o7 |
| 3453 | then we can optimize if the call destination is near |
| 3454 | by changing the call into a branch always. */ |
| 3455 | x = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3456 | y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); |
| 3457 | if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) |
| 3458 | { |
| 3459 | if (((y & OP3(~0)) == OP3(0x3d) /* restore */ |
| 3460 | || ((y & OP3(0x28)) == 0 /* arithmetic */ |
| 3461 | && (y & RD(~0)) == RD(O7))) |
| 3462 | && (y & RS1(~0)) != RS1(O7) |
| 3463 | && ((y & F3I(~0)) |
| 3464 | || (y & RS2(~0)) != RS2(O7))) |
| 3465 | { |
| 3466 | bfd_vma reloc; |
| 3467 | |
| 3468 | reloc = relocation + rel->r_addend - rel->r_offset; |
| 3469 | reloc -= (input_section->output_section->vma |
| 3470 | + input_section->output_offset); |
| 3471 | |
| 3472 | /* Ensure the branch fits into simm22. */ |
| 3473 | if ((reloc & 3) == 0 |
| 3474 | && ((reloc & ~(bfd_vma)0x7fffff) == 0 |
| 3475 | || ((reloc | 0x7fffff) == ~(bfd_vma)0))) |
| 3476 | { |
| 3477 | reloc >>= 2; |
| 3478 | |
| 3479 | /* Check whether it fits into simm19. */ |
| 3480 | if (((reloc & 0x3c0000) == 0 |
| 3481 | || (reloc & 0x3c0000) == 0x3c0000) |
| 3482 | && (ABI_64_P (output_bfd) |
| 3483 | || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS)) |
| 3484 | x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ |
| 3485 | else |
| 3486 | x = INSN_BA | (reloc & 0x3fffff); /* ba */ |
| 3487 | bfd_put_32 (input_bfd, x, contents + rel->r_offset); |
| 3488 | r = bfd_reloc_ok; |
| 3489 | if (rel->r_offset >= 4 |
| 3490 | && (y & (0xffffffff ^ RS1(~0))) |
| 3491 | == (INSN_OR | RD(O7) | RS2(G0))) |
| 3492 | { |
| 3493 | bfd_vma z; |
| 3494 | unsigned int reg; |
| 3495 | |
| 3496 | z = bfd_get_32 (input_bfd, |
| 3497 | contents + rel->r_offset - 4); |
| 3498 | if ((z & (0xffffffff ^ RD(~0))) |
| 3499 | != (INSN_OR | RS1(O7) | RS2(G0))) |
| 3500 | break; |
| 3501 | |
| 3502 | /* The sequence was |
| 3503 | or %o7, %g0, %rN |
| 3504 | call foo |
| 3505 | or %rN, %g0, %o7 |
| 3506 | |
| 3507 | If call foo was replaced with ba, replace |
| 3508 | or %rN, %g0, %o7 with nop. */ |
| 3509 | |
| 3510 | reg = (y & RS1(~0)) >> 14; |
| 3511 | if (reg != ((z & RD(~0)) >> 25) |
| 3512 | || reg == G0 || reg == O7) |
| 3513 | break; |
| 3514 | |
| 3515 | bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, |
| 3516 | contents + rel->r_offset + 4); |
| 3517 | } |
| 3518 | |
| 3519 | } |
| 3520 | } |
| 3521 | } |
| 3522 | } |
| 3523 | |
| 3524 | if (r == bfd_reloc_continue) |
| 3525 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3526 | contents, rel->r_offset, |
| 3527 | relocation, rel->r_addend); |
| 3528 | |
| 3529 | if (r != bfd_reloc_ok) |
| 3530 | { |
| 3531 | switch (r) |
| 3532 | { |
| 3533 | default: |
| 3534 | case bfd_reloc_outofrange: |
| 3535 | abort (); |
| 3536 | case bfd_reloc_overflow: |
| 3537 | { |
| 3538 | const char *name; |
| 3539 | |
| 3540 | /* The Solaris native linker silently disregards overflows. |
| 3541 | We don't, but this breaks stabs debugging info, whose |
| 3542 | relocations are only 32-bits wide. Ignore overflows in |
| 3543 | this case and also for discarded entries. */ |
| 3544 | if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32) |
| 3545 | && (((input_section->flags & SEC_DEBUGGING) != 0 |
| 3546 | && strcmp (bfd_section_name (input_bfd, |
| 3547 | input_section), |
| 3548 | ".stab") == 0) |
| 3549 | || _bfd_elf_section_offset (output_bfd, info, |
| 3550 | input_section, |
| 3551 | rel->r_offset) |
| 3552 | == (bfd_vma)-1)) |
| 3553 | break; |
| 3554 | |
| 3555 | if (h != NULL) |
| 3556 | { |
| 3557 | /* Assume this is a call protected by other code that |
| 3558 | detect the symbol is undefined. If this is the case, |
| 3559 | we can safely ignore the overflow. If not, the |
| 3560 | program is hosed anyway, and a little warning isn't |
| 3561 | going to help. */ |
| 3562 | if (h->root.type == bfd_link_hash_undefweak |
| 3563 | && howto->pc_relative) |
| 3564 | break; |
| 3565 | |
| 3566 | name = NULL; |
| 3567 | } |
| 3568 | else |
| 3569 | { |
| 3570 | name = bfd_elf_string_from_elf_section (input_bfd, |
| 3571 | symtab_hdr->sh_link, |
| 3572 | sym->st_name); |
| 3573 | if (name == NULL) |
| 3574 | return FALSE; |
| 3575 | if (*name == '\0') |
| 3576 | name = bfd_section_name (input_bfd, sec); |
| 3577 | } |
| 3578 | if (! ((*info->callbacks->reloc_overflow) |
| 3579 | (info, (h ? &h->root : NULL), name, howto->name, |
| 3580 | (bfd_vma) 0, input_bfd, input_section, |
| 3581 | rel->r_offset))) |
| 3582 | return FALSE; |
| 3583 | } |
| 3584 | break; |
| 3585 | } |
| 3586 | } |
| 3587 | } |
| 3588 | |
| 3589 | return TRUE; |
| 3590 | } |
| 3591 | |
| 3592 | /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry |
| 3593 | and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET |
| 3594 | is the offset of the associated .got.plt entry from |
| 3595 | _GLOBAL_OFFSET_TABLE_. */ |
| 3596 | |
| 3597 | static void |
| 3598 | sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info, |
| 3599 | bfd_vma plt_offset, bfd_vma plt_index, |
| 3600 | bfd_vma got_offset) |
| 3601 | { |
| 3602 | bfd_vma got_base; |
| 3603 | const bfd_vma *plt_entry; |
| 3604 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 3605 | bfd_byte *loc; |
| 3606 | Elf_Internal_Rela rela; |
| 3607 | |
| 3608 | htab = _bfd_sparc_elf_hash_table (info); |
| 3609 | if (info->shared) |
| 3610 | { |
| 3611 | plt_entry = sparc_vxworks_shared_plt_entry; |
| 3612 | got_base = 0; |
| 3613 | } |
| 3614 | else |
| 3615 | { |
| 3616 | plt_entry = sparc_vxworks_exec_plt_entry; |
| 3617 | got_base = (htab->elf.hgot->root.u.def.value |
| 3618 | + htab->elf.hgot->root.u.def.section->output_offset |
| 3619 | + htab->elf.hgot->root.u.def.section->output_section->vma); |
| 3620 | } |
| 3621 | |
| 3622 | /* Fill in the entry in the procedure linkage table. */ |
| 3623 | bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10), |
| 3624 | htab->splt->contents + plt_offset); |
| 3625 | bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff), |
| 3626 | htab->splt->contents + plt_offset + 4); |
| 3627 | bfd_put_32 (output_bfd, plt_entry[2], |
| 3628 | htab->splt->contents + plt_offset + 8); |
| 3629 | bfd_put_32 (output_bfd, plt_entry[3], |
| 3630 | htab->splt->contents + plt_offset + 12); |
| 3631 | bfd_put_32 (output_bfd, plt_entry[4], |
| 3632 | htab->splt->contents + plt_offset + 16); |
| 3633 | bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10), |
| 3634 | htab->splt->contents + plt_offset + 20); |
| 3635 | /* PC-relative displacement for a branch to the start of |
| 3636 | the PLT section. */ |
| 3637 | bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2) |
| 3638 | & 0x003fffff), |
| 3639 | htab->splt->contents + plt_offset + 24); |
| 3640 | bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff), |
| 3641 | htab->splt->contents + plt_offset + 28); |
| 3642 | |
| 3643 | /* Fill in the .got.plt entry, pointing initially at the |
| 3644 | second half of the PLT entry. */ |
| 3645 | BFD_ASSERT (htab->sgotplt != NULL); |
| 3646 | bfd_put_32 (output_bfd, |
| 3647 | htab->splt->output_section->vma |
| 3648 | + htab->splt->output_offset |
| 3649 | + plt_offset + 20, |
| 3650 | htab->sgotplt->contents + got_offset); |
| 3651 | |
| 3652 | /* Add relocations to .rela.plt.unloaded. */ |
| 3653 | if (!info->shared) |
| 3654 | { |
| 3655 | loc = (htab->srelplt2->contents |
| 3656 | + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela)); |
| 3657 | |
| 3658 | /* Relocate the initial sethi. */ |
| 3659 | rela.r_offset = (htab->splt->output_section->vma |
| 3660 | + htab->splt->output_offset |
| 3661 | + plt_offset); |
| 3662 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); |
| 3663 | rela.r_addend = got_offset; |
| 3664 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3665 | loc += sizeof (Elf32_External_Rela); |
| 3666 | |
| 3667 | /* Likewise the following or. */ |
| 3668 | rela.r_offset += 4; |
| 3669 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); |
| 3670 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3671 | loc += sizeof (Elf32_External_Rela); |
| 3672 | |
| 3673 | /* Relocate the .got.plt entry. */ |
| 3674 | rela.r_offset = (htab->sgotplt->output_section->vma |
| 3675 | + htab->sgotplt->output_offset |
| 3676 | + got_offset); |
| 3677 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32); |
| 3678 | rela.r_addend = plt_offset + 20; |
| 3679 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3680 | } |
| 3681 | } |
| 3682 | |
| 3683 | /* Finish up dynamic symbol handling. We set the contents of various |
| 3684 | dynamic sections here. */ |
| 3685 | |
| 3686 | bfd_boolean |
| 3687 | _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 3688 | struct bfd_link_info *info, |
| 3689 | struct elf_link_hash_entry *h, |
| 3690 | Elf_Internal_Sym *sym) |
| 3691 | { |
| 3692 | bfd *dynobj; |
| 3693 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 3694 | const struct elf_backend_data *bed; |
| 3695 | |
| 3696 | htab = _bfd_sparc_elf_hash_table (info); |
| 3697 | dynobj = htab->elf.dynobj; |
| 3698 | bed = get_elf_backend_data (output_bfd); |
| 3699 | |
| 3700 | if (h->plt.offset != (bfd_vma) -1) |
| 3701 | { |
| 3702 | asection *splt; |
| 3703 | asection *srela; |
| 3704 | Elf_Internal_Rela rela; |
| 3705 | bfd_byte *loc; |
| 3706 | bfd_vma r_offset, got_offset; |
| 3707 | int rela_index; |
| 3708 | |
| 3709 | /* This symbol has an entry in the PLT. Set it up. */ |
| 3710 | |
| 3711 | BFD_ASSERT (h->dynindx != -1); |
| 3712 | |
| 3713 | splt = htab->splt; |
| 3714 | srela = htab->srelplt; |
| 3715 | BFD_ASSERT (splt != NULL && srela != NULL); |
| 3716 | |
| 3717 | /* Fill in the entry in the .rela.plt section. */ |
| 3718 | if (htab->is_vxworks) |
| 3719 | { |
| 3720 | /* Work out the index of this PLT entry. */ |
| 3721 | rela_index = ((h->plt.offset - htab->plt_header_size) |
| 3722 | / htab->plt_entry_size); |
| 3723 | |
| 3724 | /* Calculate the offset of the associated .got.plt entry. |
| 3725 | The first three entries are reserved. */ |
| 3726 | got_offset = (rela_index + 3) * 4; |
| 3727 | |
| 3728 | sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset, |
| 3729 | rela_index, got_offset); |
| 3730 | |
| 3731 | |
| 3732 | /* On VxWorks, the relocation points to the .got.plt entry, |
| 3733 | not the .plt entry. */ |
| 3734 | rela.r_offset = (htab->sgotplt->output_section->vma |
| 3735 | + htab->sgotplt->output_offset |
| 3736 | + got_offset); |
| 3737 | rela.r_addend = 0; |
| 3738 | } |
| 3739 | else |
| 3740 | { |
| 3741 | /* Fill in the entry in the procedure linkage table. */ |
| 3742 | rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt, |
| 3743 | h->plt.offset, splt->size, |
| 3744 | &r_offset); |
| 3745 | |
| 3746 | rela.r_offset = r_offset |
| 3747 | + (splt->output_section->vma + splt->output_offset); |
| 3748 | if (! ABI_64_P (output_bfd) |
| 3749 | || h->plt.offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)) |
| 3750 | { |
| 3751 | rela.r_addend = 0; |
| 3752 | } |
| 3753 | else |
| 3754 | { |
| 3755 | rela.r_addend = (-(h->plt.offset + 4) |
| 3756 | - splt->output_section->vma |
| 3757 | - splt->output_offset); |
| 3758 | } |
| 3759 | } |
| 3760 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_JMP_SLOT); |
| 3761 | |
| 3762 | /* Adjust for the first 4 reserved elements in the .plt section |
| 3763 | when setting the offset in the .rela.plt section. |
| 3764 | Sun forgot to read their own ABI and copied elf32-sparc behaviour, |
| 3765 | thus .plt[4] has corresponding .rela.plt[0] and so on. */ |
| 3766 | |
| 3767 | loc = srela->contents; |
| 3768 | loc += rela_index * bed->s->sizeof_rela; |
| 3769 | bed->s->swap_reloca_out (output_bfd, &rela, loc); |
| 3770 | |
| 3771 | if (!h->def_regular) |
| 3772 | { |
| 3773 | /* Mark the symbol as undefined, rather than as defined in |
| 3774 | the .plt section. Leave the value alone. */ |
| 3775 | sym->st_shndx = SHN_UNDEF; |
| 3776 | /* If the symbol is weak, we do need to clear the value. |
| 3777 | Otherwise, the PLT entry would provide a definition for |
| 3778 | the symbol even if the symbol wasn't defined anywhere, |
| 3779 | and so the symbol would never be NULL. */ |
| 3780 | if (!h->ref_regular_nonweak) |
| 3781 | sym->st_value = 0; |
| 3782 | } |
| 3783 | } |
| 3784 | |
| 3785 | if (h->got.offset != (bfd_vma) -1 |
| 3786 | && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD |
| 3787 | && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE) |
| 3788 | { |
| 3789 | asection *sgot; |
| 3790 | asection *srela; |
| 3791 | Elf_Internal_Rela rela; |
| 3792 | |
| 3793 | /* This symbol has an entry in the GOT. Set it up. */ |
| 3794 | |
| 3795 | sgot = htab->sgot; |
| 3796 | srela = htab->srelgot; |
| 3797 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 3798 | |
| 3799 | rela.r_offset = (sgot->output_section->vma |
| 3800 | + sgot->output_offset |
| 3801 | + (h->got.offset &~ (bfd_vma) 1)); |
| 3802 | |
| 3803 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 3804 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 3805 | the symbol was forced to be local because of a version file. |
| 3806 | The entry in the global offset table will already have been |
| 3807 | initialized in the relocate_section function. */ |
| 3808 | if (info->shared |
| 3809 | && (info->symbolic || h->dynindx == -1) |
| 3810 | && h->def_regular) |
| 3811 | { |
| 3812 | asection *sec = h->root.u.def.section; |
| 3813 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE); |
| 3814 | rela.r_addend = (h->root.u.def.value |
| 3815 | + sec->output_section->vma |
| 3816 | + sec->output_offset); |
| 3817 | } |
| 3818 | else |
| 3819 | { |
| 3820 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT); |
| 3821 | rela.r_addend = 0; |
| 3822 | } |
| 3823 | |
| 3824 | SPARC_ELF_PUT_WORD (htab, output_bfd, 0, |
| 3825 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); |
| 3826 | sparc_elf_append_rela (output_bfd, srela, &rela); |
| 3827 | } |
| 3828 | |
| 3829 | if (h->needs_copy) |
| 3830 | { |
| 3831 | asection *s; |
| 3832 | Elf_Internal_Rela rela; |
| 3833 | |
| 3834 | /* This symbols needs a copy reloc. Set it up. */ |
| 3835 | BFD_ASSERT (h->dynindx != -1); |
| 3836 | |
| 3837 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 3838 | ".rela.bss"); |
| 3839 | BFD_ASSERT (s != NULL); |
| 3840 | |
| 3841 | rela.r_offset = (h->root.u.def.value |
| 3842 | + h->root.u.def.section->output_section->vma |
| 3843 | + h->root.u.def.section->output_offset); |
| 3844 | rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY); |
| 3845 | rela.r_addend = 0; |
| 3846 | sparc_elf_append_rela (output_bfd, s, &rela); |
| 3847 | } |
| 3848 | |
| 3849 | /* Mark some specially defined symbols as absolute. On VxWorks, |
| 3850 | _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the |
| 3851 | ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */ |
| 3852 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 3853 | || (!htab->is_vxworks |
| 3854 | && (h == htab->elf.hgot || h == htab->elf.hplt))) |
| 3855 | sym->st_shndx = SHN_ABS; |
| 3856 | |
| 3857 | return TRUE; |
| 3858 | } |
| 3859 | |
| 3860 | /* Finish up the dynamic sections. */ |
| 3861 | |
| 3862 | static bfd_boolean |
| 3863 | sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, |
| 3864 | bfd *dynobj, asection *sdyn, |
| 3865 | asection *splt ATTRIBUTE_UNUSED) |
| 3866 | { |
| 3867 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 3868 | const struct elf_backend_data *bed; |
| 3869 | bfd_byte *dyncon, *dynconend; |
| 3870 | size_t dynsize; |
| 3871 | int stt_regidx = -1; |
| 3872 | bfd_boolean abi_64_p; |
| 3873 | |
| 3874 | htab = _bfd_sparc_elf_hash_table (info); |
| 3875 | bed = get_elf_backend_data (output_bfd); |
| 3876 | dynsize = bed->s->sizeof_dyn; |
| 3877 | dynconend = sdyn->contents + sdyn->size; |
| 3878 | abi_64_p = ABI_64_P (output_bfd); |
| 3879 | for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) |
| 3880 | { |
| 3881 | Elf_Internal_Dyn dyn; |
| 3882 | const char *name; |
| 3883 | bfd_boolean size; |
| 3884 | |
| 3885 | bed->s->swap_dyn_in (dynobj, dyncon, &dyn); |
| 3886 | |
| 3887 | if (htab->is_vxworks && dyn.d_tag == DT_RELASZ) |
| 3888 | { |
| 3889 | /* On VxWorks, DT_RELASZ should not include the relocations |
| 3890 | in .rela.plt. */ |
| 3891 | if (htab->srelplt) |
| 3892 | { |
| 3893 | dyn.d_un.d_val -= htab->srelplt->size; |
| 3894 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3895 | } |
| 3896 | } |
| 3897 | else if (htab->is_vxworks && dyn.d_tag == DT_PLTGOT) |
| 3898 | { |
| 3899 | /* On VxWorks, DT_PLTGOT should point to the start of the GOT, |
| 3900 | not to the start of the PLT. */ |
| 3901 | if (htab->sgotplt) |
| 3902 | { |
| 3903 | dyn.d_un.d_val = (htab->sgotplt->output_section->vma |
| 3904 | + htab->sgotplt->output_offset); |
| 3905 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3906 | } |
| 3907 | } |
| 3908 | else if (htab->is_vxworks |
| 3909 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) |
| 3910 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3911 | else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER) |
| 3912 | { |
| 3913 | if (stt_regidx == -1) |
| 3914 | { |
| 3915 | stt_regidx = |
| 3916 | _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); |
| 3917 | if (stt_regidx == -1) |
| 3918 | return FALSE; |
| 3919 | } |
| 3920 | dyn.d_un.d_val = stt_regidx++; |
| 3921 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3922 | } |
| 3923 | else |
| 3924 | { |
| 3925 | switch (dyn.d_tag) |
| 3926 | { |
| 3927 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; |
| 3928 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; |
| 3929 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; |
| 3930 | default: name = NULL; size = FALSE; break; |
| 3931 | } |
| 3932 | |
| 3933 | if (name != NULL) |
| 3934 | { |
| 3935 | asection *s; |
| 3936 | |
| 3937 | s = bfd_get_section_by_name (output_bfd, name); |
| 3938 | if (s == NULL) |
| 3939 | dyn.d_un.d_val = 0; |
| 3940 | else |
| 3941 | { |
| 3942 | if (! size) |
| 3943 | dyn.d_un.d_ptr = s->vma; |
| 3944 | else |
| 3945 | dyn.d_un.d_val = s->size; |
| 3946 | } |
| 3947 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3948 | } |
| 3949 | } |
| 3950 | } |
| 3951 | return TRUE; |
| 3952 | } |
| 3953 | |
| 3954 | /* Install the first PLT entry in a VxWorks executable and make sure that |
| 3955 | .rela.plt.unloaded relocations have the correct symbol indexes. */ |
| 3956 | |
| 3957 | static void |
| 3958 | sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) |
| 3959 | { |
| 3960 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 3961 | Elf_Internal_Rela rela; |
| 3962 | bfd_vma got_base; |
| 3963 | bfd_byte *loc; |
| 3964 | |
| 3965 | htab = _bfd_sparc_elf_hash_table (info); |
| 3966 | |
| 3967 | /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */ |
| 3968 | got_base = (htab->elf.hgot->root.u.def.section->output_section->vma |
| 3969 | + htab->elf.hgot->root.u.def.section->output_offset |
| 3970 | + htab->elf.hgot->root.u.def.value); |
| 3971 | |
| 3972 | /* Install the initial PLT entry. */ |
| 3973 | bfd_put_32 (output_bfd, |
| 3974 | sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10), |
| 3975 | htab->splt->contents); |
| 3976 | bfd_put_32 (output_bfd, |
| 3977 | sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff), |
| 3978 | htab->splt->contents + 4); |
| 3979 | bfd_put_32 (output_bfd, |
| 3980 | sparc_vxworks_exec_plt0_entry[2], |
| 3981 | htab->splt->contents + 8); |
| 3982 | bfd_put_32 (output_bfd, |
| 3983 | sparc_vxworks_exec_plt0_entry[3], |
| 3984 | htab->splt->contents + 12); |
| 3985 | bfd_put_32 (output_bfd, |
| 3986 | sparc_vxworks_exec_plt0_entry[4], |
| 3987 | htab->splt->contents + 16); |
| 3988 | |
| 3989 | loc = htab->srelplt2->contents; |
| 3990 | |
| 3991 | /* Add an unloaded relocation for the initial entry's "sethi". */ |
| 3992 | rela.r_offset = (htab->splt->output_section->vma |
| 3993 | + htab->splt->output_offset); |
| 3994 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); |
| 3995 | rela.r_addend = 8; |
| 3996 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3997 | loc += sizeof (Elf32_External_Rela); |
| 3998 | |
| 3999 | /* Likewise the following "or". */ |
| 4000 | rela.r_offset += 4; |
| 4001 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); |
| 4002 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 4003 | loc += sizeof (Elf32_External_Rela); |
| 4004 | |
| 4005 | /* Fix up the remaining .rela.plt.unloaded relocations. They may have |
| 4006 | the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order |
| 4007 | in which symbols were output. */ |
| 4008 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) |
| 4009 | { |
| 4010 | Elf_Internal_Rela rel; |
| 4011 | |
| 4012 | /* The entry's initial "sethi" (against _G_O_T_). */ |
| 4013 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); |
| 4014 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22); |
| 4015 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
| 4016 | loc += sizeof (Elf32_External_Rela); |
| 4017 | |
| 4018 | /* The following "or" (also against _G_O_T_). */ |
| 4019 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); |
| 4020 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10); |
| 4021 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
| 4022 | loc += sizeof (Elf32_External_Rela); |
| 4023 | |
| 4024 | /* The .got.plt entry (against _P_L_T_). */ |
| 4025 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); |
| 4026 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32); |
| 4027 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
| 4028 | loc += sizeof (Elf32_External_Rela); |
| 4029 | } |
| 4030 | } |
| 4031 | |
| 4032 | /* Install the first PLT entry in a VxWorks shared object. */ |
| 4033 | |
| 4034 | static void |
| 4035 | sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) |
| 4036 | { |
| 4037 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 4038 | unsigned int i; |
| 4039 | |
| 4040 | htab = _bfd_sparc_elf_hash_table (info); |
| 4041 | for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++) |
| 4042 | bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i], |
| 4043 | htab->splt->contents + i * 4); |
| 4044 | } |
| 4045 | |
| 4046 | bfd_boolean |
| 4047 | _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
| 4048 | { |
| 4049 | bfd *dynobj; |
| 4050 | asection *sdyn; |
| 4051 | struct _bfd_sparc_elf_link_hash_table *htab; |
| 4052 | |
| 4053 | htab = _bfd_sparc_elf_hash_table (info); |
| 4054 | dynobj = htab->elf.dynobj; |
| 4055 | |
| 4056 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 4057 | |
| 4058 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4059 | { |
| 4060 | asection *splt; |
| 4061 | |
| 4062 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 4063 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 4064 | |
| 4065 | if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt)) |
| 4066 | return FALSE; |
| 4067 | |
| 4068 | /* Initialize the contents of the .plt section. */ |
| 4069 | if (splt->size > 0) |
| 4070 | { |
| 4071 | if (htab->is_vxworks) |
| 4072 | { |
| 4073 | if (info->shared) |
| 4074 | sparc_vxworks_finish_shared_plt (output_bfd, info); |
| 4075 | else |
| 4076 | sparc_vxworks_finish_exec_plt (output_bfd, info); |
| 4077 | } |
| 4078 | else |
| 4079 | { |
| 4080 | memset (splt->contents, 0, htab->plt_header_size); |
| 4081 | if (!ABI_64_P (output_bfd)) |
| 4082 | bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, |
| 4083 | splt->contents + splt->size - 4); |
| 4084 | } |
| 4085 | } |
| 4086 | |
| 4087 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
| 4088 | = (htab->is_vxworks || !ABI_64_P (output_bfd)) |
| 4089 | ? 0 : htab->plt_entry_size; |
| 4090 | } |
| 4091 | |
| 4092 | /* Set the first entry in the global offset table to the address of |
| 4093 | the dynamic section. */ |
| 4094 | if (htab->sgot && htab->sgot->size > 0) |
| 4095 | { |
| 4096 | bfd_vma val = (sdyn ? |
| 4097 | sdyn->output_section->vma + sdyn->output_offset : |
| 4098 | 0); |
| 4099 | |
| 4100 | SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->sgot->contents); |
| 4101 | } |
| 4102 | |
| 4103 | if (htab->sgot) |
| 4104 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = |
| 4105 | SPARC_ELF_WORD_BYTES (htab); |
| 4106 | |
| 4107 | return TRUE; |
| 4108 | } |
| 4109 | |
| 4110 | \f |
| 4111 | /* Set the right machine number for a SPARC ELF file. */ |
| 4112 | |
| 4113 | bfd_boolean |
| 4114 | _bfd_sparc_elf_object_p (bfd *abfd) |
| 4115 | { |
| 4116 | if (ABI_64_P (abfd)) |
| 4117 | { |
| 4118 | unsigned long mach = bfd_mach_sparc_v9; |
| 4119 | |
| 4120 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
| 4121 | mach = bfd_mach_sparc_v9b; |
| 4122 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) |
| 4123 | mach = bfd_mach_sparc_v9a; |
| 4124 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); |
| 4125 | } |
| 4126 | else |
| 4127 | { |
| 4128 | if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS) |
| 4129 | { |
| 4130 | if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) |
| 4131 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 4132 | bfd_mach_sparc_v8plusb); |
| 4133 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) |
| 4134 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 4135 | bfd_mach_sparc_v8plusa); |
| 4136 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS) |
| 4137 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 4138 | bfd_mach_sparc_v8plus); |
| 4139 | else |
| 4140 | return FALSE; |
| 4141 | } |
| 4142 | else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA) |
| 4143 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, |
| 4144 | bfd_mach_sparc_sparclite_le); |
| 4145 | else |
| 4146 | return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); |
| 4147 | } |
| 4148 | } |
| 4149 | |
| 4150 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
| 4151 | or (bfd_vma) -1 if it should not be included. */ |
| 4152 | |
| 4153 | bfd_vma |
| 4154 | _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel) |
| 4155 | { |
| 4156 | if (ABI_64_P (plt->owner)) |
| 4157 | { |
| 4158 | bfd_vma j; |
| 4159 | |
| 4160 | i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE; |
| 4161 | if (i < PLT64_LARGE_THRESHOLD) |
| 4162 | return plt->vma + i * PLT64_ENTRY_SIZE; |
| 4163 | |
| 4164 | j = (i - PLT64_LARGE_THRESHOLD) % 160; |
| 4165 | i -= j; |
| 4166 | return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6; |
| 4167 | } |
| 4168 | else |
| 4169 | return rel->address; |
| 4170 | } |