| 1 | /* AArch64-specific support for ELF. |
| 2 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| 3 | Contributed by ARM Ltd. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; see the file COPYING3. If not, |
| 19 | see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "elf-bfd.h" |
| 24 | #include "elfxx-aarch64.h" |
| 25 | #include <stdarg.h> |
| 26 | #include <string.h> |
| 27 | |
| 28 | #define MASK(n) ((1u << (n)) - 1) |
| 29 | |
| 30 | /* Sign-extend VALUE, which has the indicated number of BITS. */ |
| 31 | |
| 32 | bfd_signed_vma |
| 33 | _bfd_aarch64_sign_extend (bfd_vma value, int bits) |
| 34 | { |
| 35 | if (value & ((bfd_vma) 1 << (bits - 1))) |
| 36 | /* VALUE is negative. */ |
| 37 | value |= ((bfd_vma) - 1) << bits; |
| 38 | |
| 39 | return value; |
| 40 | } |
| 41 | |
| 42 | /* Decode the IMM field of ADRP. */ |
| 43 | |
| 44 | uint32_t |
| 45 | _bfd_aarch64_decode_adrp_imm (uint32_t insn) |
| 46 | { |
| 47 | return (((insn >> 5) & MASK (19)) << 2) | ((insn >> 29) & MASK (2)); |
| 48 | } |
| 49 | |
| 50 | /* Reencode the imm field of add immediate. */ |
| 51 | static inline uint32_t |
| 52 | reencode_add_imm (uint32_t insn, uint32_t imm) |
| 53 | { |
| 54 | return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10); |
| 55 | } |
| 56 | |
| 57 | /* Reencode the IMM field of ADR. */ |
| 58 | |
| 59 | uint32_t |
| 60 | _bfd_aarch64_reencode_adr_imm (uint32_t insn, uint32_t imm) |
| 61 | { |
| 62 | return (insn & ~((MASK (2) << 29) | (MASK (19) << 5))) |
| 63 | | ((imm & MASK (2)) << 29) | ((imm & (MASK (19) << 2)) << 3); |
| 64 | } |
| 65 | |
| 66 | /* Reencode the imm field of ld/st pos immediate. */ |
| 67 | static inline uint32_t |
| 68 | reencode_ldst_pos_imm (uint32_t insn, uint32_t imm) |
| 69 | { |
| 70 | return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10); |
| 71 | } |
| 72 | |
| 73 | /* Encode the 26-bit offset of unconditional branch. */ |
| 74 | static inline uint32_t |
| 75 | reencode_branch_ofs_26 (uint32_t insn, uint32_t ofs) |
| 76 | { |
| 77 | return (insn & ~MASK (26)) | (ofs & MASK (26)); |
| 78 | } |
| 79 | |
| 80 | /* Encode the 19-bit offset of conditional branch and compare & branch. */ |
| 81 | static inline uint32_t |
| 82 | reencode_cond_branch_ofs_19 (uint32_t insn, uint32_t ofs) |
| 83 | { |
| 84 | return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5); |
| 85 | } |
| 86 | |
| 87 | /* Decode the 19-bit offset of load literal. */ |
| 88 | static inline uint32_t |
| 89 | reencode_ld_lit_ofs_19 (uint32_t insn, uint32_t ofs) |
| 90 | { |
| 91 | return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5); |
| 92 | } |
| 93 | |
| 94 | /* Encode the 14-bit offset of test & branch. */ |
| 95 | static inline uint32_t |
| 96 | reencode_tst_branch_ofs_14 (uint32_t insn, uint32_t ofs) |
| 97 | { |
| 98 | return (insn & ~(MASK (14) << 5)) | ((ofs & MASK (14)) << 5); |
| 99 | } |
| 100 | |
| 101 | /* Reencode the imm field of move wide. */ |
| 102 | static inline uint32_t |
| 103 | reencode_movw_imm (uint32_t insn, uint32_t imm) |
| 104 | { |
| 105 | return (insn & ~(MASK (16) << 5)) | ((imm & MASK (16)) << 5); |
| 106 | } |
| 107 | |
| 108 | /* Reencode mov[zn] to movz. */ |
| 109 | static inline uint32_t |
| 110 | reencode_movzn_to_movz (uint32_t opcode) |
| 111 | { |
| 112 | return opcode | (1 << 30); |
| 113 | } |
| 114 | |
| 115 | /* Reencode mov[zn] to movn. */ |
| 116 | static inline uint32_t |
| 117 | reencode_movzn_to_movn (uint32_t opcode) |
| 118 | { |
| 119 | return opcode & ~(1 << 30); |
| 120 | } |
| 121 | |
| 122 | /* Return non-zero if the indicated VALUE has overflowed the maximum |
| 123 | range expressible by a unsigned number with the indicated number of |
| 124 | BITS. */ |
| 125 | |
| 126 | static bfd_reloc_status_type |
| 127 | aarch64_unsigned_overflow (bfd_vma value, unsigned int bits) |
| 128 | { |
| 129 | bfd_vma lim; |
| 130 | if (bits >= sizeof (bfd_vma) * 8) |
| 131 | return bfd_reloc_ok; |
| 132 | lim = (bfd_vma) 1 << bits; |
| 133 | if (value >= lim) |
| 134 | return bfd_reloc_overflow; |
| 135 | return bfd_reloc_ok; |
| 136 | } |
| 137 | |
| 138 | /* Return non-zero if the indicated VALUE has overflowed the maximum |
| 139 | range expressible by an signed number with the indicated number of |
| 140 | BITS. */ |
| 141 | |
| 142 | static bfd_reloc_status_type |
| 143 | aarch64_signed_overflow (bfd_vma value, unsigned int bits) |
| 144 | { |
| 145 | bfd_signed_vma svalue = (bfd_signed_vma) value; |
| 146 | bfd_signed_vma lim; |
| 147 | |
| 148 | if (bits >= sizeof (bfd_vma) * 8) |
| 149 | return bfd_reloc_ok; |
| 150 | lim = (bfd_signed_vma) 1 << (bits - 1); |
| 151 | if (svalue < -lim || svalue >= lim) |
| 152 | return bfd_reloc_overflow; |
| 153 | return bfd_reloc_ok; |
| 154 | } |
| 155 | |
| 156 | /* Insert the addend/value into the instruction or data object being |
| 157 | relocated. */ |
| 158 | bfd_reloc_status_type |
| 159 | _bfd_aarch64_elf_put_addend (bfd *abfd, |
| 160 | bfd_byte *address, bfd_reloc_code_real_type r_type, |
| 161 | reloc_howto_type *howto, bfd_signed_vma addend) |
| 162 | { |
| 163 | bfd_reloc_status_type status = bfd_reloc_ok; |
| 164 | bfd_signed_vma old_addend = addend; |
| 165 | bfd_vma contents; |
| 166 | int size; |
| 167 | |
| 168 | size = bfd_get_reloc_size (howto); |
| 169 | switch (size) |
| 170 | { |
| 171 | case 0: |
| 172 | return status; |
| 173 | case 2: |
| 174 | contents = bfd_get_16 (abfd, address); |
| 175 | break; |
| 176 | case 4: |
| 177 | if (howto->src_mask != 0xffffffff) |
| 178 | /* Must be 32-bit instruction, always little-endian. */ |
| 179 | contents = bfd_getl32 (address); |
| 180 | else |
| 181 | /* Must be 32-bit data (endianness dependent). */ |
| 182 | contents = bfd_get_32 (abfd, address); |
| 183 | break; |
| 184 | case 8: |
| 185 | contents = bfd_get_64 (abfd, address); |
| 186 | break; |
| 187 | default: |
| 188 | abort (); |
| 189 | } |
| 190 | |
| 191 | switch (howto->complain_on_overflow) |
| 192 | { |
| 193 | case complain_overflow_dont: |
| 194 | break; |
| 195 | case complain_overflow_signed: |
| 196 | status = aarch64_signed_overflow (addend, |
| 197 | howto->bitsize + howto->rightshift); |
| 198 | break; |
| 199 | case complain_overflow_unsigned: |
| 200 | status = aarch64_unsigned_overflow (addend, |
| 201 | howto->bitsize + howto->rightshift); |
| 202 | break; |
| 203 | case complain_overflow_bitfield: |
| 204 | default: |
| 205 | abort (); |
| 206 | } |
| 207 | |
| 208 | addend >>= howto->rightshift; |
| 209 | |
| 210 | switch (r_type) |
| 211 | { |
| 212 | case BFD_RELOC_AARCH64_CALL26: |
| 213 | case BFD_RELOC_AARCH64_JUMP26: |
| 214 | contents = reencode_branch_ofs_26 (contents, addend); |
| 215 | break; |
| 216 | |
| 217 | case BFD_RELOC_AARCH64_BRANCH19: |
| 218 | contents = reencode_cond_branch_ofs_19 (contents, addend); |
| 219 | break; |
| 220 | |
| 221 | case BFD_RELOC_AARCH64_TSTBR14: |
| 222 | contents = reencode_tst_branch_ofs_14 (contents, addend); |
| 223 | break; |
| 224 | |
| 225 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
| 226 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: |
| 227 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 228 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 229 | if (old_addend & ((1 << howto->rightshift) - 1)) |
| 230 | return bfd_reloc_overflow; |
| 231 | contents = reencode_ld_lit_ofs_19 (contents, addend); |
| 232 | break; |
| 233 | |
| 234 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
| 235 | break; |
| 236 | |
| 237 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
| 238 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
| 239 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
| 240 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: |
| 241 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| 242 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| 243 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 244 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 245 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| 246 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
| 247 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| 248 | contents = _bfd_aarch64_reencode_adr_imm (contents, addend); |
| 249 | break; |
| 250 | |
| 251 | case BFD_RELOC_AARCH64_ADD_LO12: |
| 252 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| 253 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| 254 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
| 255 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
| 256 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
| 257 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
| 258 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
| 259 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
| 260 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
| 261 | /* Corresponds to: add rd, rn, #uimm12 to provide the low order |
| 262 | 12 bits of the page offset following |
| 263 | BFD_RELOC_AARCH64_ADR_HI21_PCREL which computes the |
| 264 | (pc-relative) page base. */ |
| 265 | contents = reencode_add_imm (contents, addend); |
| 266 | break; |
| 267 | |
| 268 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| 269 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| 270 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| 271 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| 272 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| 273 | case BFD_RELOC_AARCH64_LDST128_LO12: |
| 274 | case BFD_RELOC_AARCH64_LDST16_LO12: |
| 275 | case BFD_RELOC_AARCH64_LDST32_LO12: |
| 276 | case BFD_RELOC_AARCH64_LDST64_LO12: |
| 277 | case BFD_RELOC_AARCH64_LDST8_LO12: |
| 278 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
| 279 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
| 280 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
| 281 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
| 282 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
| 283 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: |
| 284 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: |
| 285 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: |
| 286 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: |
| 287 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: |
| 288 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: |
| 289 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: |
| 290 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
| 291 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: |
| 292 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: |
| 293 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: |
| 294 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: |
| 295 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: |
| 296 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: |
| 297 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: |
| 298 | if (old_addend & ((1 << howto->rightshift) - 1)) |
| 299 | return bfd_reloc_overflow; |
| 300 | /* Used for ldr*|str* rt, [rn, #uimm12] to provide the low order |
| 301 | 12 bits address offset. */ |
| 302 | contents = reencode_ldst_pos_imm (contents, addend); |
| 303 | break; |
| 304 | |
| 305 | /* Group relocations to create high bits of a 16, 32, 48 or 64 |
| 306 | bit signed data or abs address inline. Will change |
| 307 | instruction to MOVN or MOVZ depending on sign of calculated |
| 308 | value. */ |
| 309 | |
| 310 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
| 311 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
| 312 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
| 313 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
| 314 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: |
| 315 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: |
| 316 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: |
| 317 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
| 318 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: |
| 319 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: |
| 320 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
| 321 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
| 322 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: |
| 323 | /* NOTE: We can only come here with movz or movn. */ |
| 324 | if (addend < 0) |
| 325 | { |
| 326 | /* Force use of MOVN. */ |
| 327 | addend = ~addend; |
| 328 | contents = reencode_movzn_to_movn (contents); |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | /* Force use of MOVZ. */ |
| 333 | contents = reencode_movzn_to_movz (contents); |
| 334 | } |
| 335 | /* Fall through. */ |
| 336 | |
| 337 | /* Group relocations to create a 16, 32, 48 or 64 bit unsigned |
| 338 | data or abs address inline. */ |
| 339 | |
| 340 | case BFD_RELOC_AARCH64_MOVW_G0: |
| 341 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
| 342 | case BFD_RELOC_AARCH64_MOVW_G1: |
| 343 | case BFD_RELOC_AARCH64_MOVW_G1_NC: |
| 344 | case BFD_RELOC_AARCH64_MOVW_G2: |
| 345 | case BFD_RELOC_AARCH64_MOVW_G2_NC: |
| 346 | case BFD_RELOC_AARCH64_MOVW_G3: |
| 347 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
| 348 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
| 349 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: |
| 350 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: |
| 351 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: |
| 352 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
| 353 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: |
| 354 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
| 355 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
| 356 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
| 357 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: |
| 358 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: |
| 359 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: |
| 360 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: |
| 361 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: |
| 362 | contents = reencode_movw_imm (contents, addend); |
| 363 | break; |
| 364 | |
| 365 | default: |
| 366 | /* Repack simple data */ |
| 367 | if (howto->dst_mask & (howto->dst_mask + 1)) |
| 368 | return bfd_reloc_notsupported; |
| 369 | |
| 370 | contents = ((contents & ~howto->dst_mask) | (addend & howto->dst_mask)); |
| 371 | break; |
| 372 | } |
| 373 | |
| 374 | switch (size) |
| 375 | { |
| 376 | case 2: |
| 377 | bfd_put_16 (abfd, contents, address); |
| 378 | break; |
| 379 | case 4: |
| 380 | if (howto->dst_mask != 0xffffffff) |
| 381 | /* must be 32-bit instruction, always little-endian */ |
| 382 | bfd_putl32 (contents, address); |
| 383 | else |
| 384 | /* must be 32-bit data (endianness dependent) */ |
| 385 | bfd_put_32 (abfd, contents, address); |
| 386 | break; |
| 387 | case 8: |
| 388 | bfd_put_64 (abfd, contents, address); |
| 389 | break; |
| 390 | default: |
| 391 | abort (); |
| 392 | } |
| 393 | |
| 394 | return status; |
| 395 | } |
| 396 | |
| 397 | bfd_vma |
| 398 | _bfd_aarch64_elf_resolve_relocation (bfd *input_bfd, |
| 399 | bfd_reloc_code_real_type r_type, |
| 400 | bfd_vma place, bfd_vma value, |
| 401 | bfd_vma addend, bfd_boolean weak_undef_p) |
| 402 | { |
| 403 | bfd_boolean tls_reloc = TRUE; |
| 404 | switch (r_type) |
| 405 | { |
| 406 | case BFD_RELOC_AARCH64_NONE: |
| 407 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
| 408 | break; |
| 409 | |
| 410 | case BFD_RELOC_AARCH64_16_PCREL: |
| 411 | case BFD_RELOC_AARCH64_32_PCREL: |
| 412 | case BFD_RELOC_AARCH64_64_PCREL: |
| 413 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: |
| 414 | case BFD_RELOC_AARCH64_BRANCH19: |
| 415 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: |
| 416 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
| 417 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: |
| 418 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: |
| 419 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: |
| 420 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: |
| 421 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: |
| 422 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: |
| 423 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| 424 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 425 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 426 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 427 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| 428 | case BFD_RELOC_AARCH64_TSTBR14: |
| 429 | if (weak_undef_p) |
| 430 | value = place; |
| 431 | value = value + addend - place; |
| 432 | break; |
| 433 | |
| 434 | case BFD_RELOC_AARCH64_CALL26: |
| 435 | case BFD_RELOC_AARCH64_JUMP26: |
| 436 | value = value + addend - place; |
| 437 | break; |
| 438 | |
| 439 | case BFD_RELOC_AARCH64_16: |
| 440 | case BFD_RELOC_AARCH64_32: |
| 441 | case BFD_RELOC_AARCH64_MOVW_G0: |
| 442 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
| 443 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
| 444 | case BFD_RELOC_AARCH64_MOVW_G1: |
| 445 | case BFD_RELOC_AARCH64_MOVW_G1_NC: |
| 446 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
| 447 | case BFD_RELOC_AARCH64_MOVW_G2: |
| 448 | case BFD_RELOC_AARCH64_MOVW_G2_NC: |
| 449 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
| 450 | case BFD_RELOC_AARCH64_MOVW_G3: |
| 451 | tls_reloc = FALSE; |
| 452 | /* fall-through. */ |
| 453 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
| 454 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: |
| 455 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
| 456 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
| 457 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
| 458 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
| 459 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
| 460 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
| 461 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: |
| 462 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: |
| 463 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: |
| 464 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
| 465 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: |
| 466 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: |
| 467 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: |
| 468 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: |
| 469 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
| 470 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: |
| 471 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: |
| 472 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: |
| 473 | /* Weak Symbols and TLS relocations are implementation defined. For this |
| 474 | case we choose to emit 0. */ |
| 475 | if (weak_undef_p && tls_reloc) |
| 476 | { |
| 477 | _bfd_error_handler (_("%pB: warning: Weak TLS is implementation " |
| 478 | "defined and may not work as expected"), |
| 479 | input_bfd); |
| 480 | value = place; |
| 481 | } |
| 482 | value = value + addend; |
| 483 | break; |
| 484 | |
| 485 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
| 486 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
| 487 | if (weak_undef_p) |
| 488 | value = PG (place); |
| 489 | value = PG (value + addend) - PG (place); |
| 490 | break; |
| 491 | |
| 492 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
| 493 | value = value + addend - place; |
| 494 | break; |
| 495 | |
| 496 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
| 497 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| 498 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 499 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| 500 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
| 501 | value = PG (value + addend) - PG (place); |
| 502 | break; |
| 503 | |
| 504 | /* Caller must make sure addend is the base address of .got section. */ |
| 505 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| 506 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| 507 | addend = PG (addend); |
| 508 | /* Fall through. */ |
| 509 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| 510 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
| 511 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
| 512 | value = value - addend; |
| 513 | break; |
| 514 | |
| 515 | case BFD_RELOC_AARCH64_ADD_LO12: |
| 516 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| 517 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| 518 | case BFD_RELOC_AARCH64_LDST128_LO12: |
| 519 | case BFD_RELOC_AARCH64_LDST16_LO12: |
| 520 | case BFD_RELOC_AARCH64_LDST32_LO12: |
| 521 | case BFD_RELOC_AARCH64_LDST64_LO12: |
| 522 | case BFD_RELOC_AARCH64_LDST8_LO12: |
| 523 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
| 524 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| 525 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
| 526 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
| 527 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
| 528 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| 529 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
| 530 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
| 531 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: |
| 532 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: |
| 533 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: |
| 534 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: |
| 535 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
| 536 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: |
| 537 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: |
| 538 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: |
| 539 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: |
| 540 | value = PG_OFFSET (value + addend); |
| 541 | break; |
| 542 | |
| 543 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
| 544 | value = value + addend; |
| 545 | break; |
| 546 | |
| 547 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: |
| 548 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
| 549 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: |
| 550 | value = (value + addend) & (bfd_vma) 0xffff0000; |
| 551 | break; |
| 552 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
| 553 | /* Mask off low 12bits, keep all other high bits, so that the later |
| 554 | generic code could check whehter there is overflow. */ |
| 555 | value = (value + addend) & ~(bfd_vma) 0xfff; |
| 556 | break; |
| 557 | |
| 558 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
| 559 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
| 560 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: |
| 561 | value = (value + addend) & (bfd_vma) 0xffff; |
| 562 | break; |
| 563 | |
| 564 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: |
| 565 | value = (value + addend) & ~(bfd_vma) 0xffffffff; |
| 566 | value -= place & ~(bfd_vma) 0xffffffff; |
| 567 | break; |
| 568 | |
| 569 | default: |
| 570 | break; |
| 571 | } |
| 572 | |
| 573 | return value; |
| 574 | } |
| 575 | |
| 576 | /* Support for core dump NOTE sections. */ |
| 577 | |
| 578 | bfd_boolean |
| 579 | _bfd_aarch64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 580 | { |
| 581 | int offset; |
| 582 | size_t size; |
| 583 | |
| 584 | switch (note->descsz) |
| 585 | { |
| 586 | default: |
| 587 | return FALSE; |
| 588 | |
| 589 | case 392: /* sizeof(struct elf_prstatus) on Linux/arm64. */ |
| 590 | /* pr_cursig */ |
| 591 | elf_tdata (abfd)->core->signal |
| 592 | = bfd_get_16 (abfd, note->descdata + 12); |
| 593 | |
| 594 | /* pr_pid */ |
| 595 | elf_tdata (abfd)->core->lwpid |
| 596 | = bfd_get_32 (abfd, note->descdata + 32); |
| 597 | |
| 598 | /* pr_reg */ |
| 599 | offset = 112; |
| 600 | size = 272; |
| 601 | |
| 602 | break; |
| 603 | } |
| 604 | |
| 605 | /* Make a ".reg/999" section. */ |
| 606 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| 607 | size, note->descpos + offset); |
| 608 | } |
| 609 | |
| 610 | bfd_boolean |
| 611 | _bfd_aarch64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 612 | { |
| 613 | switch (note->descsz) |
| 614 | { |
| 615 | default: |
| 616 | return FALSE; |
| 617 | |
| 618 | case 136: /* This is sizeof(struct elf_prpsinfo) on Linux/aarch64. */ |
| 619 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); |
| 620 | elf_tdata (abfd)->core->program |
| 621 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 622 | elf_tdata (abfd)->core->command |
| 623 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 624 | } |
| 625 | |
| 626 | /* Note that for some reason, a spurious space is tacked |
| 627 | onto the end of the args in some (at least one anyway) |
| 628 | implementations, so strip it off if it exists. */ |
| 629 | |
| 630 | { |
| 631 | char *command = elf_tdata (abfd)->core->command; |
| 632 | int n = strlen (command); |
| 633 | |
| 634 | if (0 < n && command[n - 1] == ' ') |
| 635 | command[n - 1] = '\0'; |
| 636 | } |
| 637 | |
| 638 | return TRUE; |
| 639 | } |
| 640 | |
| 641 | char * |
| 642 | _bfd_aarch64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, |
| 643 | ...) |
| 644 | { |
| 645 | switch (note_type) |
| 646 | { |
| 647 | default: |
| 648 | return NULL; |
| 649 | |
| 650 | case NT_PRPSINFO: |
| 651 | { |
| 652 | char data[136] ATTRIBUTE_NONSTRING; |
| 653 | va_list ap; |
| 654 | |
| 655 | va_start (ap, note_type); |
| 656 | memset (data, 0, sizeof (data)); |
| 657 | strncpy (data + 40, va_arg (ap, const char *), 16); |
| 658 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
| 659 | DIAGNOSTIC_PUSH; |
| 660 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
| 661 | -Wstringop-truncation: |
| 662 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 |
| 663 | */ |
| 664 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
| 665 | #endif |
| 666 | strncpy (data + 56, va_arg (ap, const char *), 80); |
| 667 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
| 668 | DIAGNOSTIC_POP; |
| 669 | #endif |
| 670 | va_end (ap); |
| 671 | |
| 672 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", |
| 673 | note_type, data, sizeof (data)); |
| 674 | } |
| 675 | |
| 676 | case NT_PRSTATUS: |
| 677 | { |
| 678 | char data[392]; |
| 679 | va_list ap; |
| 680 | long pid; |
| 681 | int cursig; |
| 682 | const void *greg; |
| 683 | |
| 684 | va_start (ap, note_type); |
| 685 | memset (data, 0, sizeof (data)); |
| 686 | pid = va_arg (ap, long); |
| 687 | bfd_put_32 (abfd, pid, data + 32); |
| 688 | cursig = va_arg (ap, int); |
| 689 | bfd_put_16 (abfd, cursig, data + 12); |
| 690 | greg = va_arg (ap, const void *); |
| 691 | memcpy (data + 112, greg, 272); |
| 692 | va_end (ap); |
| 693 | |
| 694 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", |
| 695 | note_type, data, sizeof (data)); |
| 696 | } |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | /* Find the first input bfd with GNU property and merge it with GPROP. If no |
| 701 | such input is found, add it to a new section at the last input. Update |
| 702 | GPROP accordingly. */ |
| 703 | bfd * |
| 704 | _bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *info, |
| 705 | uint32_t *gprop) |
| 706 | { |
| 707 | asection *sec; |
| 708 | bfd *pbfd; |
| 709 | bfd *ebfd = NULL; |
| 710 | elf_property *prop; |
| 711 | unsigned align; |
| 712 | |
| 713 | uint32_t gnu_prop = *gprop; |
| 714 | |
| 715 | /* Find a normal input file with GNU property note. */ |
| 716 | for (pbfd = info->input_bfds; |
| 717 | pbfd != NULL; |
| 718 | pbfd = pbfd->link.next) |
| 719 | if (bfd_get_flavour (pbfd) == bfd_target_elf_flavour |
| 720 | && bfd_count_sections (pbfd) != 0) |
| 721 | { |
| 722 | ebfd = pbfd; |
| 723 | |
| 724 | if (elf_properties (pbfd) != NULL) |
| 725 | break; |
| 726 | } |
| 727 | |
| 728 | /* If ebfd != NULL it is either an input with property note or the last |
| 729 | input. Either way if we have gnu_prop, we should add it (by creating |
| 730 | a section if needed). */ |
| 731 | if (ebfd != NULL && gnu_prop) |
| 732 | { |
| 733 | prop = _bfd_elf_get_property (ebfd, |
| 734 | GNU_PROPERTY_AARCH64_FEATURE_1_AND, |
| 735 | 4); |
| 736 | if (gnu_prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI |
| 737 | && !(prop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) |
| 738 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti " |
| 739 | "when all inputs do not have BTI in NOTE " |
| 740 | "section."), ebfd); |
| 741 | prop->u.number |= gnu_prop; |
| 742 | prop->pr_kind = property_number; |
| 743 | |
| 744 | /* pbfd being NULL implies ebfd is the last input. Create the GNU |
| 745 | property note section. */ |
| 746 | if (pbfd == NULL) |
| 747 | { |
| 748 | sec = bfd_make_section_with_flags (ebfd, |
| 749 | NOTE_GNU_PROPERTY_SECTION_NAME, |
| 750 | (SEC_ALLOC |
| 751 | | SEC_LOAD |
| 752 | | SEC_IN_MEMORY |
| 753 | | SEC_READONLY |
| 754 | | SEC_HAS_CONTENTS |
| 755 | | SEC_DATA)); |
| 756 | if (sec == NULL) |
| 757 | info->callbacks->einfo ( |
| 758 | _("%F%P: failed to create GNU property section\n")); |
| 759 | |
| 760 | align = (bfd_get_mach (ebfd) & bfd_mach_aarch64_ilp32) ? 2 : 3; |
| 761 | if (!bfd_set_section_alignment (sec, align)) |
| 762 | info->callbacks->einfo (_("%F%pA: failed to align section\n"), |
| 763 | sec); |
| 764 | |
| 765 | elf_section_type (sec) = SHT_NOTE; |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | pbfd = _bfd_elf_link_setup_gnu_properties (info); |
| 770 | |
| 771 | if (bfd_link_relocatable (info)) |
| 772 | return pbfd; |
| 773 | |
| 774 | /* If pbfd has any GNU_PROPERTY_AARCH64_FEATURE_1_AND properties, update |
| 775 | gnu_prop accordingly. */ |
| 776 | if (pbfd != NULL) |
| 777 | { |
| 778 | elf_property_list *p; |
| 779 | |
| 780 | /* The property list is sorted in order of type. */ |
| 781 | for (p = elf_properties (pbfd); p; p = p->next) |
| 782 | { |
| 783 | /* Check for all GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ |
| 784 | if (GNU_PROPERTY_AARCH64_FEATURE_1_AND == p->property.pr_type) |
| 785 | { |
| 786 | gnu_prop = (p->property.u.number |
| 787 | & (GNU_PROPERTY_AARCH64_FEATURE_1_PAC |
| 788 | | GNU_PROPERTY_AARCH64_FEATURE_1_BTI)); |
| 789 | break; |
| 790 | } |
| 791 | else if (GNU_PROPERTY_AARCH64_FEATURE_1_AND < p->property.pr_type) |
| 792 | break; |
| 793 | } |
| 794 | } |
| 795 | *gprop = gnu_prop; |
| 796 | return pbfd; |
| 797 | } |
| 798 | |
| 799 | /* Define elf_backend_parse_gnu_properties for AArch64. */ |
| 800 | enum elf_property_kind |
| 801 | _bfd_aarch64_elf_parse_gnu_properties (bfd *abfd, unsigned int type, |
| 802 | bfd_byte *ptr, unsigned int datasz) |
| 803 | { |
| 804 | elf_property *prop; |
| 805 | |
| 806 | switch (type) |
| 807 | { |
| 808 | case GNU_PROPERTY_AARCH64_FEATURE_1_AND: |
| 809 | if (datasz != 4) |
| 810 | { |
| 811 | _bfd_error_handler |
| 812 | ( _("error: %pB: <corrupt AArch64 used size: 0x%x>"), |
| 813 | abfd, datasz); |
| 814 | return property_corrupt; |
| 815 | } |
| 816 | prop = _bfd_elf_get_property (abfd, type, datasz); |
| 817 | /* Combine properties of the same type. */ |
| 818 | prop->u.number |= bfd_h_get_32 (abfd, ptr); |
| 819 | prop->pr_kind = property_number; |
| 820 | break; |
| 821 | |
| 822 | default: |
| 823 | return property_ignored; |
| 824 | } |
| 825 | |
| 826 | return property_number; |
| 827 | } |
| 828 | |
| 829 | /* Merge AArch64 GNU property BPROP with APROP also accounting for PROP. |
| 830 | If APROP isn't NULL, merge it with BPROP and/or PROP. Vice-versa if BROP |
| 831 | isn't NULL. Return TRUE if there is any update to APROP or if BPROP should |
| 832 | be merge with ABFD. */ |
| 833 | bfd_boolean |
| 834 | _bfd_aarch64_elf_merge_gnu_properties (struct bfd_link_info *info |
| 835 | ATTRIBUTE_UNUSED, |
| 836 | bfd *abfd ATTRIBUTE_UNUSED, |
| 837 | elf_property *aprop, |
| 838 | elf_property *bprop, |
| 839 | uint32_t prop) |
| 840 | { |
| 841 | unsigned int orig_number; |
| 842 | bfd_boolean updated = FALSE; |
| 843 | unsigned int pr_type = aprop != NULL ? aprop->pr_type : bprop->pr_type; |
| 844 | |
| 845 | switch (pr_type) |
| 846 | { |
| 847 | case GNU_PROPERTY_AARCH64_FEATURE_1_AND: |
| 848 | { |
| 849 | if (aprop != NULL && bprop != NULL) |
| 850 | { |
| 851 | orig_number = aprop->u.number; |
| 852 | aprop->u.number = (orig_number & bprop->u.number) | prop; |
| 853 | updated = orig_number != aprop->u.number; |
| 854 | /* Remove the property if all feature bits are cleared. */ |
| 855 | if (aprop->u.number == 0) |
| 856 | aprop->pr_kind = property_remove; |
| 857 | break; |
| 858 | } |
| 859 | /* If either is NULL, the AND would be 0 so, if there is |
| 860 | any PROP, asign it to the input that is not NULL. */ |
| 861 | if (prop) |
| 862 | { |
| 863 | if (aprop != NULL) |
| 864 | { |
| 865 | orig_number = aprop->u.number; |
| 866 | aprop->u.number = prop; |
| 867 | updated = orig_number != aprop->u.number; |
| 868 | } |
| 869 | else |
| 870 | { |
| 871 | bprop->u.number = prop; |
| 872 | updated = TRUE; |
| 873 | } |
| 874 | } |
| 875 | /* No PROP and BPROP is NULL, so remove APROP. */ |
| 876 | else if (aprop != NULL) |
| 877 | { |
| 878 | aprop->pr_kind = property_remove; |
| 879 | updated = TRUE; |
| 880 | } |
| 881 | } |
| 882 | break; |
| 883 | |
| 884 | default: |
| 885 | abort (); |
| 886 | } |
| 887 | |
| 888 | return updated; |
| 889 | } |
| 890 | |
| 891 | /* Fix up AArch64 GNU properties. */ |
| 892 | void |
| 893 | _bfd_aarch64_elf_link_fixup_gnu_properties |
| 894 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 895 | elf_property_list **listp) |
| 896 | { |
| 897 | elf_property_list *p, *prev; |
| 898 | |
| 899 | for (p = *listp, prev = *listp; p; p = p->next) |
| 900 | { |
| 901 | unsigned int type = p->property.pr_type; |
| 902 | if (type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) |
| 903 | { |
| 904 | if (p->property.pr_kind == property_remove) |
| 905 | { |
| 906 | /* Remove empty property. */ |
| 907 | if (prev == p) |
| 908 | { |
| 909 | *listp = p->next; |
| 910 | prev = *listp; |
| 911 | } |
| 912 | else |
| 913 | prev->next = p->next; |
| 914 | continue; |
| 915 | } |
| 916 | prev = p; |
| 917 | } |
| 918 | else if (type > GNU_PROPERTY_HIPROC) |
| 919 | { |
| 920 | /* The property list is sorted in order of type. */ |
| 921 | break; |
| 922 | } |
| 923 | } |
| 924 | } |