1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 1988 AT&T 24 * All Rights Reserved 25 * 26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 /* 32 * Map file parsing. 33 */ 34 #include <fcntl.h> 35 #include <string.h> 36 #include <stdio.h> 37 #include <unistd.h> 38 #include <sys/stat.h> 39 #include <errno.h> 40 #include <limits.h> 41 #include <dirent.h> 42 #include <ctype.h> 43 #include <elfcap.h> 44 #include <debug.h> 45 #include "msg.h" 46 #include "_libld.h" 47 48 #if defined(_ELF64) 49 #define STRTOADDR strtoull 50 #define XWORD_MAX ULLONG_MAX 51 #else /* Elf32 */ 52 #define STRTOADDR strtoul 53 #define XWORD_MAX UINT_MAX 54 #endif /* _ELF64 */ 55 56 typedef enum { 57 TK_STRING, TK_COLON, TK_SEMICOLON, TK_EQUAL, 58 TK_ATSIGN, TK_DASH, TK_LEFTBKT, TK_RIGHTBKT, 59 TK_PIPE, TK_EOF 60 } Token; /* Possible return values from gettoken. */ 61 62 63 static char *Mapspace; /* Malloc space holding map file. */ 64 static ulong_t Line_num; /* Current map file line number. */ 65 static char *Start_tok; /* First character of current token. */ 66 static char *nextchr; /* Next char in mapfile to examine. */ 67 68 /* 69 * Convert a string to lowercase. 70 */ 71 static void 72 lowercase(char *str) 73 { 74 while (*str = tolower(*str)) 75 str++; 76 } 77 78 /* 79 * Get a token from the mapfile. 80 */ 81 static Token 82 gettoken(Ofl_desc *ofl, const char *mapfile) 83 { 84 static char oldchr = '\0'; /* Char at end of current token. */ 85 char *end; /* End of the current token. */ 86 87 /* Cycle through the characters looking for tokens. */ 88 for (;;) { 89 if (oldchr != '\0') { 90 *nextchr = oldchr; 91 oldchr = '\0'; 92 } 93 if (!isascii(*nextchr) || 94 (!isprint(*nextchr) && !isspace(*nextchr) && 95 (*nextchr != '\0'))) { 96 eprintf(ofl->ofl_lml, ERR_FATAL, 97 MSG_INTL(MSG_MAP_ILLCHAR), mapfile, 98 EC_XWORD(Line_num), *((uchar_t *)nextchr)); 99 /* LINTED */ 100 return ((Token)S_ERROR); 101 } 102 switch (*nextchr) { 103 case '\0': /* End of file. */ 104 return (TK_EOF); 105 case ' ': /* White space. */ 106 case '\t': 107 nextchr++; 108 break; 109 case '\n': /* White space too, but bump line number. */ 110 nextchr++; 111 Line_num++; 112 break; 113 case '#': /* Comment. */ 114 while (*nextchr != '\n' && *nextchr != '\0') 115 nextchr++; 116 break; 117 case ':': 118 nextchr++; 119 return (TK_COLON); 120 case ';': 121 nextchr++; 122 return (TK_SEMICOLON); 123 case '=': 124 nextchr++; 125 return (TK_EQUAL); 126 case '@': 127 nextchr++; 128 return (TK_ATSIGN); 129 case '-': 130 nextchr++; 131 return (TK_DASH); 132 case '|': 133 nextchr++; 134 return (TK_PIPE); 135 case '{': 136 nextchr++; 137 return (TK_LEFTBKT); 138 case '}': 139 nextchr++; 140 return (TK_RIGHTBKT); 141 case '"': 142 Start_tok = ++nextchr; 143 if (((end = strpbrk(nextchr, 144 MSG_ORIG(MSG_MAP_TOK_1))) == NULL) || 145 (*end != '"')) { 146 eprintf(ofl->ofl_lml, ERR_FATAL, 147 MSG_INTL(MSG_MAP_NOTERM), mapfile, 148 EC_XWORD(Line_num)); 149 /* LINTED */ 150 return ((Token)S_ERROR); 151 } 152 *end = '\0'; 153 nextchr = end + 1; 154 return (TK_STRING); 155 default: /* string. */ 156 Start_tok = nextchr; /* CSTYLED */ 157 end = strpbrk(nextchr, MSG_ORIG(MSG_MAP_TOK_2)); 158 if (end == NULL) 159 nextchr = Start_tok + strlen(Start_tok); 160 else { 161 nextchr = end; 162 oldchr = *nextchr; 163 *nextchr = '\0'; 164 } 165 return (TK_STRING); 166 } 167 } 168 } 169 170 /* 171 * Process a hardware/software capabilities segment declaration definition. 172 * hwcap_1 = val,... [ OVERRIDE ] 173 * sfcap_1 = val,... [ OVERRIDE ] 174 * 175 * The values can be defined as a list of machine specify tokens, or numerics. 176 * Tokens are representations of the sys/auxv_$MACH.h capabilities, for example: 177 * 178 * #define AV_386_FPU 0x0001 is represented as FPU 179 * #define AV_386_TSC 0x0002 " " " " TSC 180 * 181 * Or, the above two capabilities could be represented as V0x3. Note, the 182 * OVERRIDE flag is used to insure that only those values provided via this 183 * mapfile entry are recorded in the final image, ie. this overrides any 184 * hardware capabilities that may be defined in the objects read as part of this 185 * link-edit. Specifying: 186 * 187 * V0x0 OVERRIDE 188 * 189 * effectively removes any capabilities information from the final image. 190 */ 191 static uintptr_t 192 map_cap(const char *mapfile, Word type, Ofl_desc *ofl) 193 { 194 Token tok; /* Current token. */ 195 Xword number; 196 int used = 0; 197 198 while ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 199 /* LINTED */ 200 if (tok == (Token)S_ERROR) 201 return (S_ERROR); 202 if (tok == TK_EOF) { 203 eprintf(ofl->ofl_lml, ERR_FATAL, 204 MSG_INTL(MSG_MAP_PREMEOF), mapfile, 205 EC_XWORD(Line_num)); 206 return (S_ERROR); 207 } 208 if (tok != TK_STRING) { 209 eprintf(ofl->ofl_lml, ERR_FATAL, 210 MSG_INTL(MSG_MAP_EXPSEGATT), mapfile, 211 EC_XWORD(Line_num)); 212 return (S_ERROR); 213 } 214 215 lowercase(Start_tok); 216 217 /* 218 * First, determine if the token represents the reserved 219 * OVERRIDE keyword. 220 */ 221 if (strncmp(Start_tok, MSG_ORIG(MSG_MAP_OVERRIDE), 222 MSG_MAP_OVERRIDE_SIZE) == 0) { 223 if (type == CA_SUNW_HW_1) 224 ofl->ofl_flags1 |= FLG_OF1_OVHWCAP; 225 else 226 ofl->ofl_flags1 |= FLG_OF1_OVSFCAP; 227 used++; 228 continue; 229 } 230 231 /* 232 * Next, determine if the token represents a machine specific 233 * hardware capability, or a generic software capability. 234 */ 235 if (type == CA_SUNW_HW_1) { 236 if ((number = (Xword)hwcap_1_str2val(Start_tok, 237 M_MACH)) != 0) { 238 ofl->ofl_hwcap_1 |= number; 239 used++; 240 continue; 241 } 242 } else { 243 if ((number = (Xword)sfcap_1_str2val(Start_tok, 244 M_MACH)) != 0) { 245 ofl->ofl_sfcap_1 |= number; 246 used++; 247 continue; 248 } 249 } 250 251 /* 252 * Next, determine if the token represents a numeric value. 253 */ 254 if (Start_tok[0] == 'v') { 255 char *end_tok; 256 257 errno = 0; 258 number = (Xword)strtoul(&Start_tok[1], &end_tok, 0); 259 if (errno) { 260 int err = errno; 261 eprintf(ofl->ofl_lml, ERR_FATAL, 262 MSG_INTL(MSG_MAP_BADCAPVAL), 263 mapfile, EC_XWORD(Line_num), Start_tok, 264 strerror(err)); 265 return (S_ERROR); 266 } 267 if (end_tok != strchr(Start_tok, '\0')) { 268 eprintf(ofl->ofl_lml, ERR_FATAL, 269 MSG_INTL(MSG_MAP_BADCAPVAL), mapfile, 270 EC_XWORD(Line_num), Start_tok, 271 MSG_INTL(MSG_MAP_NOBADFRM)); 272 return (S_ERROR); 273 } 274 275 if (type == CA_SUNW_HW_1) 276 ofl->ofl_hwcap_1 |= number; 277 else 278 ofl->ofl_sfcap_1 |= number; 279 used++; 280 continue; 281 } 282 283 /* 284 * We have an unknown token. 285 */ 286 used++; 287 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_MAP_UNKCAPATTR), 288 mapfile, EC_XWORD(Line_num), Start_tok); 289 return (S_ERROR); 290 } 291 292 /* 293 * Catch any empty declarations, and indicate any software capabilities 294 * have been initialized if necessary. 295 */ 296 if (used == 0) { 297 eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_MAP_EMPTYCAP), 298 mapfile, EC_XWORD(Line_num)); 299 } else if (type == CA_SUNW_SF_1) { 300 Lword badsf1; 301 302 /* 303 * Note, hardware capabilities, beyond the tokens that are 304 * presently known, can be accepted using the V0xXXX notation, 305 * and as these simply get or'd into the output image, we allow 306 * any values to be supplied. Software capability tokens 307 * however, have an algorithm of acceptance and update (see 308 * sf1_cap() in files.c). Therefore only allow software 309 * capabilities that are known. 310 */ 311 if ((badsf1 = (ofl->ofl_sfcap_1 & ~SF1_SUNW_MASK)) != 0) { 312 eprintf(ofl->ofl_lml, ERR_WARNING, 313 MSG_INTL(MSG_MAP_BADSF1), mapfile, 314 EC_XWORD(Line_num), EC_LWORD(badsf1)); 315 ofl->ofl_sfcap_1 &= SF1_SUNW_MASK; 316 } 317 if (ofl->ofl_sfcap_1 == SF1_SUNW_FPUSED) { 318 eprintf(ofl->ofl_lml, ERR_WARNING, 319 MSG_INTL(MSG_FIL_BADSF1), mapfile, 320 EC_XWORD(Line_num), EC_LWORD(SF1_SUNW_FPUSED)); 321 ofl->ofl_sfcap_1 = 0; 322 } 323 } 324 return (1); 325 } 326 327 /* 328 * Process a mapfile segment declaration definition. 329 * segment_name = segment_attribute; 330 * segment_attribute : segment_type segment_flags virtual_addr 331 * physical_addr length alignment 332 */ 333 static uintptr_t 334 map_equal(const char *mapfile, Sg_desc *sgp, Ofl_desc *ofl) 335 { 336 Token tok; /* Current token. */ 337 Boolean b_type = FALSE; /* True if seg types found. */ 338 Boolean b_flags = FALSE; /* True if seg flags found. */ 339 Boolean b_len = FALSE; /* True if seg length found. */ 340 Boolean b_round = FALSE; /* True if seg rounding found. */ 341 Boolean b_vaddr = FALSE; /* True if seg virtual addr found. */ 342 Boolean b_paddr = FALSE; /* True if seg physical addr found. */ 343 Boolean b_align = FALSE; /* True if seg alignment found. */ 344 345 while ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 346 /* LINTED */ 347 if (tok == (Token)S_ERROR) 348 return (S_ERROR); 349 if (tok == TK_EOF) { 350 eprintf(ofl->ofl_lml, ERR_FATAL, 351 MSG_INTL(MSG_MAP_PREMEOF), mapfile, 352 EC_XWORD(Line_num)); 353 return (S_ERROR); 354 } 355 if (tok != TK_STRING) { 356 eprintf(ofl->ofl_lml, ERR_FATAL, 357 MSG_INTL(MSG_MAP_EXPSEGATT), mapfile, 358 EC_XWORD(Line_num)); 359 return (S_ERROR); 360 } 361 362 lowercase(Start_tok); 363 364 /* 365 * Segment type. Presently there can only be multiple 366 * PT_LOAD and PT_NOTE segments, other segment types are 367 * only defined in seg_desc[]. 368 */ 369 if (strcmp(Start_tok, MSG_ORIG(MSG_MAP_LOAD)) == 0) { 370 if (b_type) { 371 eprintf(ofl->ofl_lml, ERR_FATAL, 372 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 373 EC_XWORD(Line_num), 374 MSG_INTL(MSG_MAP_SEGTYP)); 375 return (S_ERROR); 376 } 377 if ((sgp->sg_flags & FLG_SG_TYPE) && 378 (sgp->sg_phdr.p_type != PT_LOAD)) 379 eprintf(ofl->ofl_lml, ERR_WARNING, 380 MSG_INTL(MSG_MAP_REDEFATT), mapfile, 381 EC_XWORD(Line_num), 382 MSG_INTL(MSG_MAP_SEGTYP), sgp->sg_name); 383 sgp->sg_phdr.p_type = PT_LOAD; 384 sgp->sg_flags |= FLG_SG_TYPE; 385 b_type = TRUE; 386 } else if (strcmp(Start_tok, MSG_ORIG(MSG_MAP_STACK)) == 0) { 387 if (b_type) { 388 eprintf(ofl->ofl_lml, ERR_FATAL, 389 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 390 EC_XWORD(Line_num), 391 MSG_INTL(MSG_MAP_SEGTYP)); 392 return (S_ERROR); 393 } 394 sgp->sg_phdr.p_type = PT_SUNWSTACK; 395 sgp->sg_flags |= (FLG_SG_TYPE|FLG_SG_EMPTY); 396 b_type = TRUE; 397 } else if (strcmp(Start_tok, MSG_ORIG(MSG_MAP_NOTE)) == 0) { 398 if (b_type) { 399 eprintf(ofl->ofl_lml, ERR_FATAL, 400 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 401 EC_XWORD(Line_num), 402 MSG_INTL(MSG_MAP_SEGTYP)); 403 return (S_ERROR); 404 } 405 if ((sgp->sg_flags & FLG_SG_TYPE) && 406 (sgp->sg_phdr.p_type != PT_NOTE)) 407 eprintf(ofl->ofl_lml, ERR_WARNING, 408 MSG_INTL(MSG_MAP_REDEFATT), mapfile, 409 EC_XWORD(Line_num), 410 MSG_INTL(MSG_MAP_SEGTYP), sgp->sg_name); 411 sgp->sg_phdr.p_type = PT_NOTE; 412 sgp->sg_flags |= FLG_SG_TYPE; 413 b_type = TRUE; 414 } 415 416 417 /* Segment Flags. */ 418 419 else if (*Start_tok == '?') { 420 Word tmp_flags = 0; 421 char *flag_tok = Start_tok + 1; 422 423 if (b_flags) { 424 eprintf(ofl->ofl_lml, ERR_FATAL, 425 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 426 EC_XWORD(Line_num), 427 MSG_INTL(MSG_MAP_SEGFLAG)); 428 return (S_ERROR); 429 } 430 431 /* 432 * If ? has nothing following leave the flags cleared, 433 * otherwise or in any flags specified. 434 */ 435 if (*flag_tok) { 436 while (*flag_tok) { 437 switch (*flag_tok) { 438 case 'r': 439 tmp_flags |= PF_R; 440 break; 441 case 'w': 442 tmp_flags |= PF_W; 443 break; 444 case 'x': 445 tmp_flags |= PF_X; 446 break; 447 case 'e': 448 sgp->sg_flags |= FLG_SG_EMPTY; 449 break; 450 case 'o': 451 sgp->sg_flags |= FLG_SG_ORDER; 452 ofl->ofl_flags |= 453 FLG_OF_SEGORDER; 454 break; 455 case 'n': 456 sgp->sg_flags |= FLG_SG_NOHDR; 457 break; 458 default: 459 eprintf(ofl->ofl_lml, ERR_FATAL, 460 MSG_INTL(MSG_MAP_UNKSEGFLG), 461 mapfile, EC_XWORD(Line_num), 462 *flag_tok); 463 return (S_ERROR); 464 } 465 flag_tok++; 466 } 467 } 468 /* 469 * Warn when changing flags except when we're 470 * adding or removing "X" from a RW PT_LOAD 471 * segment. 472 */ 473 if ((sgp->sg_flags & FLG_SG_FLAGS) && 474 (sgp->sg_phdr.p_flags != tmp_flags) && 475 !(sgp->sg_phdr.p_type == PT_LOAD && 476 (tmp_flags & (PF_R|PF_W)) == (PF_R|PF_W) && 477 (tmp_flags ^ sgp->sg_phdr.p_flags) == PF_X)) { 478 eprintf(ofl->ofl_lml, ERR_WARNING, 479 MSG_INTL(MSG_MAP_REDEFATT), mapfile, 480 EC_XWORD(Line_num), 481 MSG_INTL(MSG_MAP_SEGFLAG), sgp->sg_name); 482 } 483 sgp->sg_flags |= FLG_SG_FLAGS; 484 sgp->sg_phdr.p_flags = tmp_flags; 485 b_flags = TRUE; 486 } 487 488 489 /* Segment address, length, alignment or rounding number. */ 490 491 else if ((Start_tok[0] == 'l') || (Start_tok[0] == 'v') || 492 (Start_tok[0] == 'a') || (Start_tok[0] == 'p') || 493 (Start_tok[0] == 'r')) { 494 char *end_tok; 495 Xword number; 496 497 if ((number = (Xword)STRTOADDR(&Start_tok[1], &end_tok, 498 0)) >= XWORD_MAX) { 499 eprintf(ofl->ofl_lml, ERR_FATAL, 500 MSG_INTL(MSG_MAP_SEGADDR), mapfile, 501 EC_XWORD(Line_num), Start_tok, 502 MSG_INTL(MSG_MAP_EXCLIMIT)); 503 return (S_ERROR); 504 } 505 506 if (end_tok != strchr(Start_tok, '\0')) { 507 eprintf(ofl->ofl_lml, ERR_FATAL, 508 MSG_INTL(MSG_MAP_SEGADDR), mapfile, 509 EC_XWORD(Line_num), Start_tok, 510 MSG_INTL(MSG_MAP_NOBADFRM)); 511 return (S_ERROR); 512 } 513 514 switch (*Start_tok) { 515 case 'l': 516 if (b_len) { 517 eprintf(ofl->ofl_lml, ERR_FATAL, 518 MSG_INTL(MSG_MAP_MOREONCE), 519 mapfile, EC_XWORD(Line_num), 520 MSG_INTL(MSG_MAP_SEGLEN)); 521 return (S_ERROR); 522 } 523 if ((sgp->sg_flags & FLG_SG_LENGTH) && 524 (sgp->sg_length != number)) 525 eprintf(ofl->ofl_lml, ERR_WARNING, 526 MSG_INTL(MSG_MAP_REDEFATT), 527 mapfile, EC_XWORD(Line_num), 528 MSG_INTL(MSG_MAP_SEGLEN), 529 sgp->sg_name); 530 sgp->sg_length = number; 531 sgp->sg_flags |= FLG_SG_LENGTH; 532 b_len = TRUE; 533 break; 534 case 'r': 535 if (b_round) { 536 eprintf(ofl->ofl_lml, ERR_FATAL, 537 MSG_INTL(MSG_MAP_MOREONCE), 538 mapfile, EC_XWORD(Line_num), 539 MSG_INTL(MSG_MAP_SEGROUND)); 540 return (S_ERROR); 541 } 542 if ((sgp->sg_flags & FLG_SG_ROUND) && 543 (sgp->sg_round != number)) 544 eprintf(ofl->ofl_lml, ERR_WARNING, 545 MSG_INTL(MSG_MAP_REDEFATT), 546 mapfile, EC_XWORD(Line_num), 547 MSG_INTL(MSG_MAP_SEGROUND), 548 sgp->sg_name); 549 sgp->sg_round = number; 550 sgp->sg_flags |= FLG_SG_ROUND; 551 b_round = TRUE; 552 break; 553 case 'v': 554 if (b_vaddr) { 555 eprintf(ofl->ofl_lml, ERR_FATAL, 556 MSG_INTL(MSG_MAP_MOREONCE), 557 mapfile, EC_XWORD(Line_num), 558 MSG_INTL(MSG_MAP_SEGVADDR)); 559 return (S_ERROR); 560 } 561 if ((sgp->sg_flags & FLG_SG_VADDR) && 562 (sgp->sg_phdr.p_vaddr != number)) 563 eprintf(ofl->ofl_lml, ERR_WARNING, 564 MSG_INTL(MSG_MAP_REDEFATT), 565 mapfile, EC_XWORD(Line_num), 566 MSG_INTL(MSG_MAP_SEGVADDR), 567 sgp->sg_name); 568 /* LINTED */ 569 sgp->sg_phdr.p_vaddr = (Addr)number; 570 sgp->sg_flags |= FLG_SG_VADDR; 571 ofl->ofl_flags1 |= FLG_OF1_VADDR; 572 b_vaddr = TRUE; 573 break; 574 case 'p': 575 if (b_paddr) { 576 eprintf(ofl->ofl_lml, ERR_FATAL, 577 MSG_INTL(MSG_MAP_MOREONCE), 578 mapfile, EC_XWORD(Line_num), 579 MSG_INTL(MSG_MAP_SEGPHYS)); 580 return (S_ERROR); 581 } 582 if ((sgp->sg_flags & FLG_SG_PADDR) && 583 (sgp->sg_phdr.p_paddr != number)) 584 eprintf(ofl->ofl_lml, ERR_WARNING, 585 MSG_INTL(MSG_MAP_REDEFATT), 586 mapfile, EC_XWORD(Line_num), 587 MSG_INTL(MSG_MAP_SEGPHYS), 588 sgp->sg_name); 589 /* LINTED */ 590 sgp->sg_phdr.p_paddr = (Addr)number; 591 sgp->sg_flags |= FLG_SG_PADDR; 592 b_paddr = TRUE; 593 break; 594 case 'a': 595 if (b_align) { 596 eprintf(ofl->ofl_lml, ERR_FATAL, 597 MSG_INTL(MSG_MAP_MOREONCE), 598 mapfile, EC_XWORD(Line_num), 599 MSG_INTL(MSG_MAP_SEGALIGN)); 600 return (S_ERROR); 601 } 602 if ((sgp->sg_flags & FLG_SG_ALIGN) && 603 (sgp->sg_phdr.p_align != number)) 604 eprintf(ofl->ofl_lml, ERR_WARNING, 605 MSG_INTL(MSG_MAP_REDEFATT), 606 mapfile, EC_XWORD(Line_num), 607 MSG_INTL(MSG_MAP_SEGALIGN), 608 sgp->sg_name); 609 /* LINTED */ 610 sgp->sg_phdr.p_align = (Xword)number; 611 sgp->sg_flags |= FLG_SG_ALIGN; 612 b_align = TRUE; 613 break; 614 } 615 } else { 616 eprintf(ofl->ofl_lml, ERR_FATAL, 617 MSG_INTL(MSG_MAP_UNKSEGATT), mapfile, 618 EC_XWORD(Line_num), Start_tok); 619 return (S_ERROR); 620 } 621 } 622 623 /* 624 * Segment reservations are only allowable for executables. In addition 625 * they must have an associated address, size, no permisions, 626 * and are only meaningful for LOAD segments (the last failure 627 * we can correct, hence the warning condition). 628 */ 629 if ((sgp->sg_flags & FLG_SG_EMPTY) && 630 (sgp->sg_phdr.p_type != PT_SUNWSTACK)) { 631 if (!(ofl->ofl_flags & FLG_OF_EXEC)) { 632 eprintf(ofl->ofl_lml, ERR_FATAL, 633 MSG_INTL(MSG_MAP_SEGEMPEXE), mapfile, 634 EC_XWORD(Line_num)); 635 return (S_ERROR); 636 } 637 if (sgp->sg_phdr.p_flags != 0) { 638 eprintf(ofl->ofl_lml, ERR_FATAL, 639 MSG_INTL(MSG_MAP_SEGEMNOPERM), mapfile, 640 EC_XWORD(Line_num), 641 EC_WORD(sgp->sg_phdr.p_flags)); 642 return (S_ERROR); 643 } 644 if ((sgp->sg_flags & (FLG_SG_LENGTH | FLG_SG_VADDR)) != 645 (FLG_SG_LENGTH | FLG_SG_VADDR)) { 646 eprintf(ofl->ofl_lml, ERR_FATAL, 647 MSG_INTL(MSG_MAP_SEGEMPATT), mapfile, 648 EC_XWORD(Line_num)); 649 return (S_ERROR); 650 } 651 if (sgp->sg_phdr.p_type != PT_LOAD) { 652 eprintf(ofl->ofl_lml, ERR_WARNING, 653 MSG_INTL(MSG_MAP_SEGEMPLOAD), mapfile, 654 EC_XWORD(Line_num)); 655 sgp->sg_phdr.p_type = PT_LOAD; 656 } 657 } 658 659 /* 660 * All segment attributes have now been scanned. Certain flags do not 661 * make sense if this is not a loadable segment, fix if necessary. 662 * Note, if the segment is of type PT_NULL it must be new, and any 663 * defaults will be applied back in ld_map_parse(). 664 * When clearing an attribute leave the flag set as an indicator for 665 * later entries re-specifying the same segment. 666 */ 667 if (sgp->sg_phdr.p_type != PT_NULL && sgp->sg_phdr.p_type != PT_LOAD) { 668 const char *fmt; 669 670 if (sgp->sg_phdr.p_type == PT_SUNWSTACK) 671 fmt = MSG_INTL(MSG_MAP_NOSTACK1); 672 else 673 fmt = MSG_INTL(MSG_MAP_NONLOAD); 674 675 if ((sgp->sg_flags & FLG_SG_FLAGS) && 676 (sgp->sg_phdr.p_type != PT_SUNWSTACK)) { 677 if (sgp->sg_phdr.p_flags != 0) { 678 eprintf(ofl->ofl_lml, ERR_WARNING, 679 MSG_INTL(MSG_MAP_NONLOAD), mapfile, 680 EC_XWORD(Line_num), 681 MSG_INTL(MSG_MAP_SEGFLAG)); 682 sgp->sg_phdr.p_flags = 0; 683 } 684 } 685 if (sgp->sg_flags & FLG_SG_LENGTH) 686 if (sgp->sg_length != 0) { 687 eprintf(ofl->ofl_lml, ERR_WARNING, 688 fmt, mapfile, EC_XWORD(Line_num), 689 MSG_INTL(MSG_MAP_SEGLEN)); 690 sgp->sg_length = 0; 691 } 692 if (sgp->sg_flags & FLG_SG_ROUND) 693 if (sgp->sg_round != 0) { 694 eprintf(ofl->ofl_lml, ERR_WARNING, 695 fmt, mapfile, EC_XWORD(Line_num), 696 MSG_INTL(MSG_MAP_SEGROUND)); 697 sgp->sg_round = 0; 698 } 699 if (sgp->sg_flags & FLG_SG_VADDR) { 700 if (sgp->sg_phdr.p_vaddr != 0) { 701 eprintf(ofl->ofl_lml, ERR_WARNING, 702 fmt, mapfile, EC_XWORD(Line_num), 703 MSG_INTL(MSG_MAP_SEGVADDR)); 704 sgp->sg_phdr.p_vaddr = 0; 705 } 706 } 707 if (sgp->sg_flags & FLG_SG_PADDR) 708 if (sgp->sg_phdr.p_paddr != 0) { 709 eprintf(ofl->ofl_lml, ERR_WARNING, 710 fmt, mapfile, EC_XWORD(Line_num), 711 MSG_INTL(MSG_MAP_SEGPHYS)); 712 sgp->sg_phdr.p_paddr = 0; 713 } 714 if (sgp->sg_flags & FLG_SG_ALIGN) 715 if (sgp->sg_phdr.p_align != 0) { 716 eprintf(ofl->ofl_lml, ERR_WARNING, 717 fmt, mapfile, EC_XWORD(Line_num), 718 MSG_INTL(MSG_MAP_SEGALIGN)); 719 sgp->sg_phdr.p_align = 0; 720 } 721 } 722 return (1); 723 } 724 725 726 /* 727 * Process a mapfile mapping directives definition. 728 * segment_name : section_attribute [ : file_name ] 729 * segment_attribute : section_name section_type section_flags; 730 */ 731 static uintptr_t 732 map_colon(Ofl_desc *ofl, const char *mapfile, Ent_desc *enp) 733 { 734 Token tok; /* Current token. */ 735 736 Boolean b_name = FALSE; 737 Boolean b_type = FALSE; 738 Boolean b_attr = FALSE; 739 Boolean b_bang = FALSE; 740 static Xword index = 0; 741 742 743 while (((tok = gettoken(ofl, mapfile)) != TK_COLON) && 744 (tok != TK_SEMICOLON)) { 745 /* LINTED */ 746 if (tok == (Token)S_ERROR) 747 return (S_ERROR); 748 if (tok == TK_EOF) { 749 eprintf(ofl->ofl_lml, ERR_FATAL, 750 MSG_INTL(MSG_MAP_PREMEOF), mapfile, 751 EC_XWORD(Line_num)); 752 return (S_ERROR); 753 } 754 755 /* Segment type. */ 756 757 if (*Start_tok == '$') { 758 if (b_type) { 759 eprintf(ofl->ofl_lml, ERR_FATAL, 760 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 761 EC_XWORD(Line_num), 762 MSG_INTL(MSG_MAP_SECTYP)); 763 return (S_ERROR); 764 } 765 b_type = TRUE; 766 Start_tok++; 767 lowercase(Start_tok); 768 if (strcmp(Start_tok, MSG_ORIG(MSG_STR_PROGBITS)) == 0) 769 enp->ec_type = SHT_PROGBITS; 770 else if (strcmp(Start_tok, 771 MSG_ORIG(MSG_STR_SYMTAB)) == 0) 772 enp->ec_type = SHT_SYMTAB; 773 else if (strcmp(Start_tok, 774 MSG_ORIG(MSG_STR_DYNSYM)) == 0) 775 enp->ec_type = SHT_DYNSYM; 776 else if (strcmp(Start_tok, 777 MSG_ORIG(MSG_STR_STRTAB)) == 0) 778 enp->ec_type = SHT_STRTAB; 779 else if ((strcmp(Start_tok, 780 MSG_ORIG(MSG_STR_REL)) == 0) || 781 (strcmp(Start_tok, MSG_ORIG(MSG_STR_RELA)) == 0)) 782 enp->ec_type = M_REL_SHT_TYPE; 783 else if (strcmp(Start_tok, MSG_ORIG(MSG_STR_HASH)) == 0) 784 enp->ec_type = SHT_HASH; 785 else if (strcmp(Start_tok, MSG_ORIG(MSG_STR_LIB)) == 0) 786 enp->ec_type = SHT_SHLIB; 787 else if (strcmp(Start_tok, 788 MSG_ORIG(MSG_STR_LD_DYNAMIC)) == 0) 789 enp->ec_type = SHT_DYNAMIC; 790 else if (strcmp(Start_tok, MSG_ORIG(MSG_STR_NOTE)) == 0) 791 enp->ec_type = SHT_NOTE; 792 else if (strcmp(Start_tok, 793 MSG_ORIG(MSG_STR_NOBITS)) == 0) 794 enp->ec_type = SHT_NOBITS; 795 else { 796 eprintf(ofl->ofl_lml, ERR_FATAL, 797 MSG_INTL(MSG_MAP_UNKSECTYP), mapfile, 798 EC_XWORD(Line_num), Start_tok); 799 return (S_ERROR); 800 } 801 802 /* 803 * Segment flags. 804 * If a segment flag is specified then the appropriate bit is 805 * set in the ec_attrmask, the ec_attrbits fields determine 806 * whether the attrmask fields must be tested true or false 807 * ie. for ?A the attrmask is set and the attrbit is set, 808 * for ?!A the attrmask is set and the attrbit is clear. 809 */ 810 } else if (*Start_tok == '?') { 811 if (b_attr) { 812 eprintf(ofl->ofl_lml, ERR_FATAL, 813 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 814 EC_XWORD(Line_num), 815 MSG_INTL(MSG_MAP_SECFLAG)); 816 return (S_ERROR); 817 } 818 b_attr = TRUE; 819 b_bang = FALSE; 820 Start_tok++; 821 lowercase(Start_tok); 822 for (; *Start_tok != '\0'; Start_tok++) 823 switch (*Start_tok) { 824 case '!': 825 if (b_bang) { 826 eprintf(ofl->ofl_lml, ERR_FATAL, 827 MSG_INTL(MSG_MAP_BADFLAG), 828 mapfile, EC_XWORD(Line_num), 829 Start_tok); 830 return (S_ERROR); 831 } 832 b_bang = TRUE; 833 break; 834 case 'a': 835 if (enp->ec_attrmask & SHF_ALLOC) { 836 eprintf(ofl->ofl_lml, ERR_FATAL, 837 MSG_INTL(MSG_MAP_BADFLAG), 838 mapfile, EC_XWORD(Line_num), 839 Start_tok); 840 return (S_ERROR); 841 } 842 enp->ec_attrmask |= SHF_ALLOC; 843 if (!b_bang) 844 enp->ec_attrbits |= SHF_ALLOC; 845 b_bang = FALSE; 846 break; 847 case 'w': 848 if (enp->ec_attrmask & SHF_WRITE) { 849 eprintf(ofl->ofl_lml, ERR_FATAL, 850 MSG_INTL(MSG_MAP_BADFLAG), 851 mapfile, EC_XWORD(Line_num), 852 Start_tok); 853 return (S_ERROR); 854 } 855 enp->ec_attrmask |= SHF_WRITE; 856 if (!b_bang) 857 enp->ec_attrbits |= SHF_WRITE; 858 b_bang = FALSE; 859 break; 860 case 'x': 861 if (enp->ec_attrmask & SHF_EXECINSTR) { 862 eprintf(ofl->ofl_lml, ERR_FATAL, 863 MSG_INTL(MSG_MAP_BADFLAG), 864 mapfile, EC_XWORD(Line_num), 865 Start_tok); 866 return (S_ERROR); 867 } 868 enp->ec_attrmask |= SHF_EXECINSTR; 869 if (!b_bang) 870 enp->ec_attrbits |= SHF_EXECINSTR; 871 b_bang = FALSE; 872 break; 873 default: 874 eprintf(ofl->ofl_lml, ERR_FATAL, 875 MSG_INTL(MSG_MAP_BADFLAG), 876 mapfile, EC_XWORD(Line_num), 877 Start_tok); 878 return (S_ERROR); 879 } 880 /* 881 * Section name. 882 */ 883 } else { 884 if (b_name) { 885 eprintf(ofl->ofl_lml, ERR_FATAL, 886 MSG_INTL(MSG_MAP_MOREONCE), mapfile, 887 EC_XWORD(Line_num), 888 MSG_INTL(MSG_MAP_SECNAME)); 889 return (S_ERROR); 890 } 891 b_name = TRUE; 892 if ((enp->ec_name = 893 libld_malloc(strlen(Start_tok) + 1)) == 0) 894 return (S_ERROR); 895 (void) strcpy((char *)enp->ec_name, Start_tok); 896 /* 897 * get the index for text reordering 898 */ 899 /* LINTED */ 900 enp->ec_ndx = (Word)++index; 901 } 902 } 903 if (tok == TK_COLON) { 904 /* 905 * File names. 906 */ 907 while ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 908 char *file; 909 910 /* LINTED */ 911 if (tok == (Token)S_ERROR) 912 return (S_ERROR); 913 if (tok == TK_EOF) { 914 eprintf(ofl->ofl_lml, ERR_FATAL, 915 MSG_INTL(MSG_MAP_PREMEOF), mapfile, 916 EC_XWORD(Line_num)); 917 return (S_ERROR); 918 } 919 if (tok != TK_STRING) { 920 eprintf(ofl->ofl_lml, ERR_FATAL, 921 MSG_INTL(MSG_MAP_MALFORM), mapfile, 922 EC_XWORD(Line_num)); 923 return (S_ERROR); 924 } 925 if ((file = 926 libld_malloc(strlen(Start_tok) + 1)) == 0) 927 return (S_ERROR); 928 (void) strcpy(file, Start_tok); 929 if (list_appendc(&(enp->ec_files), file) == 0) 930 return (S_ERROR); 931 } 932 } 933 return (1); 934 } 935 936 /* 937 * Obtain a pseudo input file descriptor to assign to a mapfile. This is 938 * required any time a symbol is generated. First traverse the input file 939 * descriptors looking for a match. As all mapfile processing occurs before 940 * any real input file processing this list is going to be small and we don't 941 * need to do any filename clash checking. 942 */ 943 static Ifl_desc * 944 map_ifl(const char *mapfile, Ofl_desc *ofl) 945 { 946 Ifl_desc *ifl; 947 Listnode *lnp; 948 949 for (LIST_TRAVERSE(&ofl->ofl_objs, lnp, ifl)) 950 if (strcmp(ifl->ifl_name, mapfile) == 0) 951 return (ifl); 952 953 if ((ifl = libld_calloc(sizeof (Ifl_desc), 1)) == 0) 954 return ((Ifl_desc *)S_ERROR); 955 ifl->ifl_name = mapfile; 956 ifl->ifl_flags = (FLG_IF_MAPFILE | FLG_IF_NEEDED | FLG_IF_FILEREF); 957 if ((ifl->ifl_ehdr = libld_calloc(sizeof (Ehdr), 1)) == 0) 958 return ((Ifl_desc *)S_ERROR); 959 ifl->ifl_ehdr->e_type = ET_REL; 960 961 if (list_appendc(&ofl->ofl_objs, ifl) == 0) 962 return ((Ifl_desc *)S_ERROR); 963 else 964 return (ifl); 965 } 966 967 /* 968 * Process a mapfile size symbol definition. 969 * segment_name @ symbol_name; 970 */ 971 static uintptr_t 972 map_atsign(const char *mapfile, Sg_desc *sgp, Ofl_desc *ofl) 973 { 974 Sym *sym; /* New symbol pointer */ 975 Sym_desc *sdp; /* New symbol node pointer */ 976 Ifl_desc *ifl; /* Dummy input file structure */ 977 Token tok; /* Current token. */ 978 avl_index_t where; 979 980 if ((tok = gettoken(ofl, mapfile)) != TK_STRING) { 981 /* LINTED */ 982 if (tok != (Token)S_ERROR) 983 eprintf(ofl->ofl_lml, ERR_FATAL, 984 MSG_INTL(MSG_MAP_EXPSYM_1), mapfile, 985 EC_XWORD(Line_num)); 986 return (S_ERROR); 987 } 988 989 if (sgp->sg_sizesym != NULL) { 990 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_MAP_SEGSIZE), 991 mapfile, EC_XWORD(Line_num), sgp->sg_name); 992 return (S_ERROR); 993 } 994 995 /* 996 * Make sure we have a pseudo file descriptor to associate to the 997 * symbol. 998 */ 999 if ((ifl = map_ifl(mapfile, ofl)) == (Ifl_desc *)S_ERROR) 1000 return (S_ERROR); 1001 1002 /* 1003 * Make sure the symbol doesn't already exist. It is possible that the 1004 * symbol has been scoped or versioned, in which case it does exist 1005 * but we can freely update it here. 1006 */ 1007 if ((sdp = ld_sym_find(Start_tok, SYM_NOHASH, &where, ofl)) == NULL) { 1008 char *name; 1009 Word hval; 1010 1011 if ((name = libld_malloc(strlen(Start_tok) + 1)) == 0) 1012 return (S_ERROR); 1013 (void) strcpy(name, Start_tok); 1014 1015 if ((sym = libld_calloc(sizeof (Sym), 1)) == 0) 1016 return (S_ERROR); 1017 sym->st_shndx = SHN_ABS; 1018 sym->st_size = 0; 1019 sym->st_info = ELF_ST_INFO(STB_GLOBAL, STT_OBJECT); 1020 1021 DBG_CALL(Dbg_map_size_new(ofl->ofl_lml, name)); 1022 /* LINTED */ 1023 hval = (Word)elf_hash(name); 1024 if ((sdp = ld_sym_enter(name, sym, hval, ifl, ofl, 0, SHN_ABS, 1025 (FLG_SY_SPECSEC | FLG_SY_GLOBREF), 0, &where)) == 1026 (Sym_desc *)S_ERROR) 1027 return (S_ERROR); 1028 sdp->sd_flags &= ~FLG_SY_CLEAN; 1029 DBG_CALL(Dbg_map_symbol(ofl, sdp)); 1030 } else { 1031 sym = sdp->sd_sym; 1032 1033 if (sym->st_shndx == SHN_UNDEF) { 1034 sdp->sd_shndx = sym->st_shndx = SHN_ABS; 1035 sdp->sd_flags |= FLG_SY_SPECSEC; 1036 sym->st_size = 0; 1037 sym->st_info = ELF_ST_INFO(STB_GLOBAL, STT_OBJECT); 1038 1039 sdp->sd_flags &= ~FLG_SY_MAPREF; 1040 1041 DBG_CALL(Dbg_map_size_old(ofl, sdp)); 1042 } else { 1043 eprintf(ofl->ofl_lml, ERR_FATAL, 1044 MSG_INTL(MSG_MAP_SYMDEF), mapfile, 1045 EC_XWORD(Line_num), demangle(sdp->sd_name), 1046 sdp->sd_file->ifl_name); 1047 return (S_ERROR); 1048 } 1049 } 1050 1051 /* 1052 * Assign the symbol to the segment. 1053 */ 1054 sgp->sg_sizesym = sdp; 1055 1056 if (gettoken(ofl, mapfile) != TK_SEMICOLON) { 1057 /* LINTED */ 1058 if (tok != (Token)S_ERROR) 1059 eprintf(ofl->ofl_lml, ERR_FATAL, 1060 MSG_INTL(MSG_MAP_EXPSCOL), mapfile, 1061 EC_XWORD(Line_num)); 1062 return (S_ERROR); 1063 } else 1064 return (1); 1065 } 1066 1067 1068 static uintptr_t 1069 map_pipe(Ofl_desc *ofl, const char *mapfile, Sg_desc *sgp) 1070 { 1071 char *sec_name; /* section name */ 1072 Token tok; /* current token. */ 1073 Sec_order *sc_order; 1074 static Word index = 0; /* used to maintain a increasing */ 1075 /* index for section ordering. */ 1076 1077 if ((tok = gettoken(ofl, mapfile)) != TK_STRING) { 1078 /* LINTED */ 1079 if (tok != (Token)S_ERROR) 1080 eprintf(ofl->ofl_lml, ERR_FATAL, 1081 MSG_INTL(MSG_MAP_EXPSEC), mapfile, 1082 EC_XWORD(Line_num)); 1083 return (S_ERROR); 1084 } 1085 1086 if ((sec_name = libld_malloc(strlen(Start_tok) + 1)) == 0) 1087 return (S_ERROR); 1088 (void) strcpy(sec_name, Start_tok); 1089 1090 if ((sc_order = libld_malloc(sizeof (Sec_order))) == 0) 1091 return (S_ERROR); 1092 1093 sc_order->sco_secname = sec_name; 1094 sc_order->sco_index = ++index; 1095 1096 if (alist_append(&(sgp->sg_secorder), &sc_order, 1097 sizeof (Sec_order *), AL_CNT_SECORDER) == 0) 1098 return (S_ERROR); 1099 1100 DBG_CALL(Dbg_map_pipe(ofl->ofl_lml, sgp, sec_name, index)); 1101 1102 if ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 1103 /* LINTED */ 1104 if (tok != (Token)S_ERROR) 1105 eprintf(ofl->ofl_lml, ERR_FATAL, 1106 MSG_INTL(MSG_MAP_EXPSCOL), mapfile, 1107 EC_XWORD(Line_num)); 1108 return (S_ERROR); 1109 } 1110 1111 return (1); 1112 } 1113 1114 1115 /* 1116 * Process a mapfile library specification definition. 1117 * shared_object_name - shared object definition 1118 * shared object definition : [ shared object type [ = SONAME ]] 1119 * [ versions ]; 1120 */ 1121 static uintptr_t 1122 map_dash(const char *mapfile, char *name, Ofl_desc *ofl) 1123 { 1124 char *version; 1125 Token tok; 1126 Sdf_desc *sdf; 1127 Sdv_desc *sdv; 1128 enum { 1129 MD_NONE = 0, 1130 MD_SPECVERS, 1131 MD_ADDVERS, 1132 MD_NEEDED 1133 } dolkey = MD_NONE; 1134 1135 1136 /* 1137 * If a shared object definition for this file already exists use it, 1138 * otherwise allocate a new descriptor. 1139 */ 1140 if ((sdf = sdf_find(name, &ofl->ofl_socntl)) == 0) { 1141 if ((sdf = sdf_add(name, &ofl->ofl_socntl)) == 1142 (Sdf_desc *)S_ERROR) 1143 return (S_ERROR); 1144 sdf->sdf_rfile = mapfile; 1145 } 1146 1147 /* 1148 * Get the shared object descriptor string. 1149 */ 1150 while ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 1151 /* LINTED */ 1152 if (tok == (Token)S_ERROR) 1153 return (S_ERROR); 1154 if (tok == TK_EOF) { 1155 eprintf(ofl->ofl_lml, ERR_FATAL, 1156 MSG_INTL(MSG_MAP_PREMEOF), mapfile, 1157 EC_XWORD(Line_num)); 1158 return (S_ERROR); 1159 } 1160 if ((tok != TK_STRING) && (tok != TK_EQUAL)) { 1161 eprintf(ofl->ofl_lml, ERR_FATAL, 1162 MSG_INTL(MSG_MAP_EXPSO), mapfile, 1163 EC_XWORD(Line_num)); 1164 return (S_ERROR); 1165 } 1166 1167 /* 1168 * Determine if the library type is accompanied with a SONAME 1169 * definition. 1170 */ 1171 if (tok == TK_EQUAL) { 1172 if ((tok = gettoken(ofl, mapfile)) != TK_STRING) { 1173 /* LINTED */ 1174 if (tok == (Token)S_ERROR) 1175 return (S_ERROR); 1176 else { 1177 eprintf(ofl->ofl_lml, ERR_FATAL, 1178 MSG_INTL(MSG_MAP_EXPSO), mapfile, 1179 EC_XWORD(Line_num)); 1180 return (S_ERROR); 1181 } 1182 } 1183 switch (dolkey) { 1184 case MD_NEEDED: 1185 if (sdf->sdf_flags & FLG_SDF_SONAME) { 1186 eprintf(ofl->ofl_lml, ERR_WARNING, 1187 MSG_INTL(MSG_MAP_MULSONAME), 1188 mapfile, EC_XWORD(Line_num), name, 1189 sdf->sdf_soname, Start_tok); 1190 dolkey = MD_NONE; 1191 continue; 1192 } 1193 if ((sdf->sdf_soname = 1194 libld_malloc(strlen(Start_tok) + 1)) == 0) 1195 return (S_ERROR); 1196 (void) strcpy((char *)sdf->sdf_soname, 1197 Start_tok); 1198 sdf->sdf_flags |= FLG_SDF_SONAME; 1199 break; 1200 case MD_SPECVERS: 1201 case MD_ADDVERS: 1202 if ((sdv = libld_calloc( 1203 sizeof (Sdv_desc), 1)) == 0) 1204 return (S_ERROR); 1205 1206 if (dolkey == MD_SPECVERS) 1207 sdf->sdf_flags |= FLG_SDF_SPECVER; 1208 else 1209 sdf->sdf_flags |= FLG_SDF_ADDVER; 1210 1211 if ((sdf->sdf_flags & (FLG_SDF_SPECVER | 1212 FLG_SDF_ADDVER)) == (FLG_SDF_SPECVER | 1213 FLG_SDF_ADDVER)) { 1214 eprintf(ofl->ofl_lml, ERR_FATAL, 1215 MSG_INTL(MSG_MAP_INCOMFLG), 1216 mapfile, EC_XWORD(Line_num), 1217 sdf->sdf_name); 1218 return (S_ERROR); 1219 } 1220 if ((version = 1221 libld_malloc(strlen(Start_tok) + 1)) == 0) 1222 return (S_ERROR); 1223 (void) strcpy(version, Start_tok); 1224 sdv->sdv_name = version; 1225 sdv->sdv_ref = mapfile; 1226 if (list_appendc(&sdf->sdf_verneed, sdv) == 0) 1227 return (S_ERROR); 1228 break; 1229 case MD_NONE: 1230 eprintf(ofl->ofl_lml, ERR_FATAL, 1231 MSG_INTL(MSG_MAP_UNEXTOK), mapfile, 1232 EC_XWORD(Line_num), '='); 1233 return (S_ERROR); 1234 } 1235 dolkey = MD_NONE; 1236 continue; 1237 } 1238 1239 /* 1240 * A shared object type has been specified. This may also be 1241 * accompanied by an SONAME redefinition (see above). 1242 */ 1243 if (*Start_tok == '$') { 1244 if (dolkey != MD_NONE) { 1245 eprintf(ofl->ofl_lml, ERR_FATAL, 1246 MSG_INTL(MSG_MAP_UNEXTOK), mapfile, 1247 EC_XWORD(Line_num), '$'); 1248 return (S_ERROR); 1249 } 1250 Start_tok++; 1251 lowercase(Start_tok); 1252 if (strcmp(Start_tok, 1253 MSG_ORIG(MSG_MAP_NEED)) == 0) 1254 dolkey = MD_NEEDED; 1255 else if (strcmp(Start_tok, 1256 MSG_ORIG(MSG_MAP_SPECVERS)) == 0) 1257 dolkey = MD_SPECVERS; 1258 else if (strcmp(Start_tok, 1259 MSG_ORIG(MSG_MAP_ADDVERS)) == 0) 1260 dolkey = MD_ADDVERS; 1261 else { 1262 eprintf(ofl->ofl_lml, ERR_FATAL, 1263 MSG_INTL(MSG_MAP_UNKSOTYP), mapfile, 1264 EC_XWORD(Line_num), Start_tok); 1265 return (S_ERROR); 1266 } 1267 continue; 1268 } 1269 1270 /* 1271 * shared object version requirement. 1272 */ 1273 if ((version = libld_malloc(strlen(Start_tok) + 1)) == 0) 1274 return (S_ERROR); 1275 (void) strcpy(version, Start_tok); 1276 if ((sdv = libld_calloc(sizeof (Sdv_desc), 1)) == 0) 1277 return (S_ERROR); 1278 sdv->sdv_name = version; 1279 sdv->sdv_ref = mapfile; 1280 sdf->sdf_flags |= FLG_SDF_SELECT; 1281 if (list_appendc(&sdf->sdf_vers, sdv) == 0) 1282 return (S_ERROR); 1283 } 1284 1285 DBG_CALL(Dbg_map_dash(ofl->ofl_lml, name, sdf)); 1286 return (1); 1287 } 1288 1289 1290 /* 1291 * Process a symbol definition list 1292 * version name { 1293 * local: 1294 * hidden: 1295 * symbol { = (FUNC | OBJECT) 1296 * (PARENT | EXTERN) 1297 * ($ABS | $COMMON) A V 1298 * }; 1299 * *; 1300 * global: 1301 * default: 1302 * symbolic: 1303 * protected: 1304 * symbol { = (FUNC | OBJECT) 1305 * (PARENT | EXTERN) 1306 * (DIRECT | NODIRECT) 1307 * ([FILTER | AUXILIARY] name) 1308 * ($ABS | $COMMON) A V 1309 * }; 1310 * } [references]; 1311 */ 1312 #define SYMNO 50 /* Symbol block allocation amount */ 1313 #define FLG_SCOPE_LOCL 0 /* local scope flag */ 1314 #define FLG_SCOPE_GLOB 1 /* global scope flag */ 1315 #define FLG_SCOPE_SYMB 2 /* symbolic scope flag */ 1316 #define FLG_SCOPE_ELIM 3 /* eliminate symbol from symtabs */ 1317 1318 static uintptr_t 1319 map_version(const char *mapfile, char *name, Ofl_desc *ofl) 1320 { 1321 Token tok; 1322 Sym *sym; 1323 int scope = FLG_SCOPE_GLOB; 1324 Ver_desc *vdp; 1325 Word hash; 1326 Ifl_desc *ifl; 1327 avl_index_t where; 1328 1329 /* 1330 * If we're generating segments within the image then any symbol 1331 * reductions will be processed (ie. applied to relocations and symbol 1332 * table entries). Otherwise (when creating a relocatable object) any 1333 * versioning information is simply recorded for use in a later 1334 * (segment generating) link-edit. 1335 */ 1336 if (ofl->ofl_flags & FLG_OF_RELOBJ) 1337 ofl->ofl_flags |= FLG_OF_VERDEF; 1338 1339 /* 1340 * If this is a new mapfile reference generate an input file descriptor 1341 * to represent it. Otherwise this must simply be a new version within 1342 * the mapfile we've previously been processing, in this case continue 1343 * to use the original input file descriptor. 1344 */ 1345 if ((ifl = map_ifl(mapfile, ofl)) == (Ifl_desc *)S_ERROR) 1346 return (S_ERROR); 1347 1348 /* 1349 * If no version descriptors have yet been set up, initialize a base 1350 * version to represent the output file itself. This `base' version 1351 * catches any internally generated symbols (_end, _etext, etc.) and 1352 * serves to initialize the output version descriptor count. 1353 */ 1354 if (ofl->ofl_vercnt == 0) { 1355 if (ld_vers_base(ofl) == (Ver_desc *)S_ERROR) 1356 return (S_ERROR); 1357 } 1358 1359 /* 1360 * If this definition has an associated version name then generate a 1361 * new version descriptor and an associated version symbol index table. 1362 */ 1363 if (name) { 1364 ofl->ofl_flags |= FLG_OF_VERDEF; 1365 1366 /* 1367 * Traverse the present version descriptor list to see if there 1368 * is already one of the same name, otherwise create a new one. 1369 */ 1370 /* LINTED */ 1371 hash = (Word)elf_hash(name); 1372 if ((vdp = ld_vers_find(name, hash, &ofl->ofl_verdesc)) == 0) { 1373 if ((vdp = ld_vers_desc(name, hash, 1374 &ofl->ofl_verdesc)) == (Ver_desc *)S_ERROR) 1375 return (S_ERROR); 1376 } 1377 1378 /* 1379 * Initialize any new version with an index, the file from which 1380 * it was first referenced, and a WEAK flag (indicates that 1381 * there are no symbols assigned to it yet). 1382 */ 1383 if (vdp->vd_ndx == 0) { 1384 /* LINTED */ 1385 vdp->vd_ndx = (Half)++ofl->ofl_vercnt; 1386 vdp->vd_file = ifl; 1387 vdp->vd_flags = VER_FLG_WEAK; 1388 } 1389 } else { 1390 /* 1391 * If a version definition hasn't been specified assign any 1392 * symbols to the base version. 1393 */ 1394 vdp = (Ver_desc *)ofl->ofl_verdesc.head->data; 1395 } 1396 1397 /* 1398 * Scan the mapfile entry picking out scoping and symbol definitions. 1399 */ 1400 while ((tok = gettoken(ofl, mapfile)) != TK_RIGHTBKT) { 1401 Sym_desc * sdp; 1402 Word shndx = SHN_UNDEF; 1403 uchar_t type = STT_NOTYPE; 1404 Addr value = 0, size = 0; 1405 char *_name, *filtee = 0; 1406 Word sym_flags = 0; 1407 Half sym_flags1 = 0; 1408 uint_t filter = 0, dftflag; 1409 1410 if ((tok != TK_STRING) && (tok != TK_COLON)) { 1411 eprintf(ofl->ofl_lml, ERR_FATAL, 1412 MSG_INTL(MSG_MAP_EXPSYM_2), mapfile, 1413 EC_XWORD(Line_num)); 1414 return (S_ERROR); 1415 } 1416 1417 if ((_name = libld_malloc(strlen(Start_tok) + 1)) == 0) 1418 return (S_ERROR); 1419 (void) strcpy(_name, Start_tok); 1420 1421 if ((tok != TK_COLON) && 1422 /* LINTED */ 1423 (tok = gettoken(ofl, mapfile)) == (Token)S_ERROR) 1424 return (S_ERROR); 1425 1426 /* 1427 * Turn off the WEAK flag to indicate that definitions are 1428 * associated with this version. It would probably be more 1429 * accurate to only remove this flag with the specification of 1430 * global symbols, however setting it here allows enough slop 1431 * to compensate for the various user inputs we've seen so far. 1432 * Only if a closed version is specified (i.e., "SUNW_1.x {};") 1433 * will a user get a weak version (which is how we document the 1434 * creation of weak versions). 1435 */ 1436 vdp->vd_flags &= ~VER_FLG_WEAK; 1437 1438 switch (tok) { 1439 case TK_COLON: 1440 /* 1441 * Establish a new scope. All symbols added by this 1442 * mapfile are actually global entries. They will be 1443 * reduced to locals during sym_update(). 1444 */ 1445 if ((strcmp(MSG_ORIG(MSG_STR_LOCAL), 1446 _name) == 0) || 1447 (strcmp(MSG_ORIG(MSG_MAP_HIDDEN), _name) == 0)) 1448 scope = FLG_SCOPE_LOCL; 1449 else if ((strcmp(MSG_ORIG(MSG_MAP_GLOBAL), 1450 _name) == 0) || 1451 (strcmp(MSG_ORIG(MSG_MAP_DEFAULT), _name) == 0)) 1452 scope = FLG_SCOPE_GLOB; 1453 else if ((strcmp(MSG_ORIG(MSG_STR_SYMBOLIC), 1454 _name) == 0) || 1455 (strcmp(MSG_ORIG(MSG_MAP_PROTECTED), _name) == 0)) 1456 scope = FLG_SCOPE_SYMB; 1457 else if (strcmp(MSG_ORIG(MSG_STR_ELIMINATE), _name) 1458 == 0) 1459 scope = FLG_SCOPE_ELIM; 1460 else { 1461 eprintf(ofl->ofl_lml, ERR_FATAL, 1462 MSG_INTL(MSG_MAP_UNKSYMSCO), mapfile, 1463 EC_XWORD(Line_num), _name); 1464 return (S_ERROR); 1465 } 1466 continue; 1467 1468 case TK_EQUAL: 1469 /* 1470 * A full blown symbol definition follows. 1471 * Determine the symbol type and any virtual address or 1472 * alignment specified and then fall through to process 1473 * the entire symbols information. 1474 */ 1475 while ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 1476 /* 1477 * If we had previously seen a filter or 1478 * auxiliary filter requirement, the next string 1479 * is the filtee itself. 1480 */ 1481 if (filter) { 1482 if (filtee) { 1483 eprintf(ofl->ofl_lml, ERR_FATAL, 1484 MSG_INTL(MSG_MAP_MULTFILTEE), 1485 mapfile, EC_XWORD(Line_num), 1486 _name); 1487 return (S_ERROR); 1488 } 1489 if ((filtee = libld_malloc( 1490 strlen(Start_tok) + 1)) == 0) 1491 return (S_ERROR); 1492 (void) strcpy(filtee, Start_tok); 1493 filter = 0; 1494 continue; 1495 } 1496 1497 /* 1498 * Determine any Value or Size attributes. 1499 */ 1500 lowercase(Start_tok); 1501 if (Start_tok[0] == 'v' || 1502 Start_tok[0] == 's') { 1503 char *end_tok; 1504 Lword number; 1505 1506 if ((number = (Lword)STRTOADDR( 1507 &Start_tok[1], &end_tok, 0)) == 1508 XWORD_MAX) { 1509 eprintf(ofl->ofl_lml, ERR_FATAL, 1510 MSG_INTL(MSG_MAP_SEGADDR), 1511 mapfile, EC_XWORD(Line_num), 1512 Start_tok, 1513 MSG_INTL(MSG_MAP_EXCLIMIT)); 1514 return (S_ERROR); 1515 } 1516 1517 if (end_tok != 1518 strchr(Start_tok, '\0')) { 1519 eprintf(ofl->ofl_lml, ERR_FATAL, 1520 MSG_INTL(MSG_MAP_SEGADDR), 1521 mapfile, EC_XWORD(Line_num), 1522 Start_tok, 1523 MSG_INTL(MSG_MAP_NOBADFRM)); 1524 return (S_ERROR); 1525 } 1526 1527 switch (*Start_tok) { 1528 case 'v': 1529 if (value) { 1530 eprintf(ofl->ofl_lml, ERR_FATAL, 1531 MSG_INTL(MSG_MAP_MOREONCE), 1532 mapfile, EC_XWORD(Line_num), 1533 MSG_INTL(MSG_MAP_SYMVAL)); 1534 return (S_ERROR); 1535 } 1536 /* LINTED */ 1537 value = (Addr)number; 1538 break; 1539 case 's': 1540 if (size) { 1541 eprintf(ofl->ofl_lml, ERR_FATAL, 1542 MSG_INTL(MSG_MAP_MOREONCE), 1543 mapfile, EC_XWORD(Line_num), 1544 MSG_INTL(MSG_MAP_SYMSIZE)); 1545 return (S_ERROR); 1546 } 1547 /* LINTED */ 1548 size = (Addr)number; 1549 break; 1550 } 1551 1552 } else if (strcmp(Start_tok, 1553 MSG_ORIG(MSG_MAP_FUNCTION)) == 0) { 1554 shndx = SHN_ABS; 1555 sym_flags |= FLG_SY_SPECSEC; 1556 type = STT_FUNC; 1557 } else if (strcmp(Start_tok, 1558 MSG_ORIG(MSG_MAP_DATA)) == 0) { 1559 shndx = SHN_ABS; 1560 sym_flags |= FLG_SY_SPECSEC; 1561 type = STT_OBJECT; 1562 } else if (strcmp(Start_tok, 1563 MSG_ORIG(MSG_MAP_COMMON)) == 0) { 1564 shndx = SHN_COMMON; 1565 sym_flags |= FLG_SY_SPECSEC; 1566 type = STT_OBJECT; 1567 } else if (strcmp(Start_tok, 1568 MSG_ORIG(MSG_MAP_PARENT)) == 0) { 1569 sym_flags |= FLG_SY_PARENT; 1570 ofl->ofl_flags |= FLG_OF_SYMINFO; 1571 } else if (strcmp(Start_tok, 1572 MSG_ORIG(MSG_MAP_EXTERN)) == 0) { 1573 sym_flags |= FLG_SY_EXTERN; 1574 ofl->ofl_flags |= FLG_OF_SYMINFO; 1575 } else if (strcmp(Start_tok, 1576 MSG_ORIG(MSG_MAP_DIRECT)) == 0) { 1577 sym_flags1 |= FLG_SY1_DIR; 1578 ofl->ofl_flags |= FLG_OF_SYMINFO; 1579 } else if (strcmp(Start_tok, 1580 MSG_ORIG(MSG_MAP_NODIRECT)) == 0) { 1581 sym_flags1 |= FLG_SY1_NDIR; 1582 ofl->ofl_flags |= FLG_OF_SYMINFO; 1583 ofl->ofl_flags1 |= FLG_OF1_NDIRECT; 1584 ofl->ofl_dtflags_1 |= DF_1_NODIRECT; 1585 } else if (strcmp(Start_tok, 1586 MSG_ORIG(MSG_MAP_FILTER)) == 0) { 1587 dftflag = filter = FLG_SY_STDFLTR; 1588 sym_flags |= FLG_SY_STDFLTR; 1589 ofl->ofl_flags |= FLG_OF_SYMINFO; 1590 continue; 1591 } else if (strcmp(Start_tok, 1592 MSG_ORIG(MSG_MAP_AUXILIARY)) == 0) { 1593 dftflag = filter = FLG_SY_AUXFLTR; 1594 sym_flags |= FLG_SY_AUXFLTR; 1595 ofl->ofl_flags |= FLG_OF_SYMINFO; 1596 continue; 1597 } else { 1598 eprintf(ofl->ofl_lml, ERR_FATAL, 1599 MSG_INTL(MSG_MAP_UNKSYMDEF), 1600 mapfile, EC_XWORD(Line_num), 1601 Start_tok); 1602 return (S_ERROR); 1603 } 1604 } 1605 /* FALLTHROUGH */ 1606 1607 case TK_SEMICOLON: 1608 /* 1609 * The special auto-reduction directive `*' can be 1610 * specified in local scope and indicates that all 1611 * symbols processed that are not explicitly defined to 1612 * be global are to be reduced to local scope in the 1613 * output image. This also applies that a version 1614 * definition is created as the user has effectively 1615 * defined an interface. 1616 */ 1617 if (*_name == '*') { 1618 if (scope == FLG_SCOPE_LOCL) 1619 ofl->ofl_flags |= 1620 (FLG_OF_AUTOLCL | FLG_OF_VERDEF); 1621 else if (scope == FLG_SCOPE_ELIM) { 1622 ofl->ofl_flags |= FLG_OF_VERDEF; 1623 ofl->ofl_flags1 |= FLG_OF1_AUTOELM; 1624 } 1625 continue; 1626 } 1627 1628 /* 1629 * Add the new symbol. It should be noted that all 1630 * symbols added by the mapfile start out with global 1631 * scope, thus they will fall through the normal symbol 1632 * resolution process. Symbols defined as locals will 1633 * be reduced in scope after all input file processing. 1634 */ 1635 /* LINTED */ 1636 hash = (Word)elf_hash(_name); 1637 DBG_CALL(Dbg_map_version(ofl->ofl_lml, name, _name, 1638 scope)); 1639 if ((sdp = ld_sym_find(_name, hash, &where, 1640 ofl)) == NULL) { 1641 if ((sym = libld_calloc(sizeof (Sym), 1)) == 0) 1642 return (S_ERROR); 1643 1644 /* 1645 * Make sure any parent or external declarations 1646 * fall back to references. 1647 */ 1648 if (sym_flags & (FLG_SY_PARENT | FLG_SY_EXTERN)) 1649 sym->st_shndx = shndx = SHN_UNDEF; 1650 else 1651 sym->st_shndx = (Half)shndx; 1652 1653 sym->st_value = value; 1654 sym->st_size = size; 1655 sym->st_info = ELF_ST_INFO(STB_GLOBAL, type); 1656 1657 if ((sdp = ld_sym_enter(_name, sym, hash, ifl, 1658 ofl, 0, shndx, sym_flags, sym_flags1, 1659 &where)) == (Sym_desc *)S_ERROR) 1660 return (S_ERROR); 1661 1662 sdp->sd_flags &= ~FLG_SY_CLEAN; 1663 1664 /* 1665 * Identify any references. FLG_SY_MAPREF is 1666 * turned off once a relocatable object with 1667 * the same symbol is found, thus the existance 1668 * of FLG_SY_MAPREF at symbol validation is 1669 * used to flag undefined/mispelt entries. 1670 */ 1671 if (sym->st_shndx == SHN_UNDEF) 1672 sdp->sd_flags |= 1673 (FLG_SY_MAPREF | FLG_SY_GLOBREF); 1674 1675 } else { 1676 int conflict = 0; 1677 1678 sym = sdp->sd_sym; 1679 1680 /* 1681 * If this symbol already exists, make sure this 1682 * definition doesn't conflict with the former. 1683 * Provided it doesn't, multiple definitions can 1684 * augment each other. 1685 */ 1686 if (sym->st_value) { 1687 if (value && (sym->st_value != value)) 1688 conflict = 1; 1689 } else 1690 sym->st_value = value; 1691 1692 if (sym->st_size) { 1693 if (size && (sym->st_size != size)) 1694 conflict = 2; 1695 } else 1696 sym->st_size = size; 1697 1698 if (ELF_ST_TYPE(sym->st_info) != STT_NOTYPE) { 1699 if ((type != STT_NOTYPE) && 1700 (ELF_ST_TYPE(sym->st_info) != type)) 1701 conflict = 3; 1702 } else 1703 sym->st_info = 1704 ELF_ST_INFO(STB_GLOBAL, type); 1705 1706 if (sym->st_shndx != SHN_UNDEF) { 1707 if ((shndx != SHN_UNDEF) && 1708 (sym->st_shndx != shndx)) 1709 conflict = 4; 1710 } else 1711 sdp->sd_shndx = sym->st_shndx = shndx; 1712 1713 if ((sdp->sd_flags1 & FLG_SY1_LOCL) && 1714 ((scope != FLG_SCOPE_LOCL) && 1715 (scope != FLG_SCOPE_ELIM))) 1716 conflict = 5; 1717 if ((sdp->sd_flags1 & FLG_SY1_GLOB) && 1718 (scope != FLG_SCOPE_GLOB) && 1719 (scope != FLG_SCOPE_SYMB)) 1720 conflict = 6; 1721 if ((sdp->sd_flags1 & FLG_SY1_GLOB) && 1722 (sdp->sd_aux->sa_overndx != 1723 VER_NDX_GLOBAL) && 1724 (vdp->vd_ndx != VER_NDX_GLOBAL) && 1725 (sdp->sd_aux->sa_overndx != vdp->vd_ndx)) 1726 conflict = 7; 1727 1728 if (conflict) { 1729 eprintf(ofl->ofl_lml, ERR_FATAL, 1730 MSG_INTL(MSG_MAP_SYMDEF), mapfile, 1731 EC_XWORD(Line_num), demangle(_name), 1732 sdp->sd_file->ifl_name); 1733 return (S_ERROR); 1734 } 1735 1736 /* 1737 * If this mapfile entry supplies a definition, 1738 * indicate that the symbol is now used. 1739 */ 1740 if (shndx != SHN_UNDEF) 1741 sdp->sd_flags |= FLG_SY_MAPUSED; 1742 } 1743 1744 /* 1745 * Indicate the new symbols scope. 1746 */ 1747 if (scope == FLG_SCOPE_LOCL) { 1748 sdp->sd_flags1 |= FLG_SY1_LOCL; 1749 sdp->sd_sym->st_other = STV_HIDDEN; 1750 if (ofl->ofl_flags1 & FLG_OF1_REDLSYM) 1751 sdp->sd_flags1 |= FLG_SY1_ELIM; 1752 1753 } else if (scope == FLG_SCOPE_ELIM) { 1754 sdp->sd_flags1 |= (FLG_SY1_LOCL | FLG_SY1_ELIM); 1755 sdp->sd_sym->st_other = STV_HIDDEN; 1756 } else { 1757 sdp->sd_flags |= sym_flags; 1758 sdp->sd_flags1 |= (sym_flags1 | FLG_SY1_GLOB); 1759 1760 if (scope == FLG_SCOPE_SYMB) { 1761 sdp->sd_flags1 |= FLG_SY1_PROT; 1762 sdp->sd_sym->st_other = STV_PROTECTED; 1763 } 1764 1765 /* 1766 * Record the present version index for later 1767 * potential versioning. 1768 */ 1769 if ((sdp->sd_aux->sa_overndx == 0) || 1770 (sdp->sd_aux->sa_overndx == VER_NDX_GLOBAL)) 1771 sdp->sd_aux->sa_overndx = vdp->vd_ndx; 1772 vdp->vd_flags |= FLG_VER_REFER; 1773 } 1774 1775 /* 1776 * If we've encountered a symbol definition simulate 1777 * that an input file has been processed - this allows 1778 * things like filters to be created purely from a 1779 * mapfile. 1780 */ 1781 if (type != STT_NOTYPE) 1782 ofl->ofl_objscnt++; 1783 DBG_CALL(Dbg_map_symbol(ofl, sdp)); 1784 1785 /* 1786 * If this symbol has an associated filtee, record the 1787 * filtee string and associate the string index with the 1788 * symbol. This is used later to associate the syminfo 1789 * information with the necessary .dynamic entry. 1790 */ 1791 if (filter && (filtee == 0)) { 1792 eprintf(ofl->ofl_lml, ERR_FATAL, 1793 MSG_INTL(MSG_MAP_NOFILTER), mapfile, 1794 EC_XWORD(Line_num), _name); 1795 return (S_ERROR); 1796 } 1797 1798 if (filtee) { 1799 Dfltr_desc * dftp; 1800 Sfltr_desc sft; 1801 Aliste off = 0, _off; 1802 1803 /* 1804 * Make sure we don't duplicate any filtee 1805 * strings, and create a new descriptor if 1806 * necessary. 1807 */ 1808 for (ALIST_TRAVERSE(ofl->ofl_dtsfltrs, _off, 1809 dftp)) { 1810 if ((dftflag != dftp->dft_flag) || 1811 (strcmp(dftp->dft_str, filtee))) 1812 continue; 1813 off = _off; 1814 break; 1815 } 1816 if (off == 0) { 1817 Dfltr_desc dft; 1818 1819 dft.dft_str = filtee; 1820 dft.dft_flag = dftflag; 1821 dft.dft_ndx = 0; 1822 1823 if ((dftp = 1824 alist_append(&(ofl->ofl_dtsfltrs), 1825 &dft, sizeof (Dfltr_desc), 1826 AL_CNT_DFLTR)) == 0) 1827 return (S_ERROR); 1828 1829 off = (Aliste)((char *)dftp - 1830 (char *)ofl->ofl_dtsfltrs); 1831 } 1832 1833 /* 1834 * Create a new filter descriptor for this 1835 * symbol. 1836 */ 1837 sft.sft_sdp = sdp; 1838 sft.sft_off = off; 1839 1840 if (alist_append(&(ofl->ofl_symfltrs), 1841 &sft, sizeof (Sfltr_desc), 1842 AL_CNT_SFLTR) == 0) 1843 return (S_ERROR); 1844 } 1845 break; 1846 1847 default: 1848 eprintf(ofl->ofl_lml, ERR_FATAL, 1849 MSG_INTL(MSG_MAP_EXPSCOL), mapfile, 1850 EC_XWORD(Line_num)); 1851 return (S_ERROR); 1852 } 1853 } 1854 1855 /* 1856 * Determine if any version references are provided after the close 1857 * bracket. 1858 */ 1859 while ((tok = gettoken(ofl, mapfile)) != TK_SEMICOLON) { 1860 Ver_desc *_vdp; 1861 char *_name; 1862 1863 if (tok != TK_STRING) { 1864 /* LINTED */ 1865 if (tok != (Token)S_ERROR) 1866 eprintf(ofl->ofl_lml, ERR_FATAL, 1867 MSG_INTL(MSG_MAP_EXPVERS), mapfile, 1868 EC_XWORD(Line_num)); 1869 return (S_ERROR); 1870 } 1871 1872 name = Start_tok; 1873 if (vdp->vd_ndx == VER_NDX_GLOBAL) { 1874 eprintf(ofl->ofl_lml, ERR_WARNING, 1875 MSG_INTL(MSG_MAP_UNEXDEP), mapfile, 1876 EC_XWORD(Line_num), name); 1877 continue; 1878 } 1879 1880 /* 1881 * Generate a new version descriptor if it doesn't already 1882 * exist. 1883 */ 1884 /* LINTED */ 1885 hash = (Word)elf_hash(name); 1886 if ((_vdp = ld_vers_find(name, hash, &ofl->ofl_verdesc)) == 0) { 1887 if ((_name = libld_malloc(strlen(name) + 1)) == 0) 1888 return (S_ERROR); 1889 (void) strcpy(_name, name); 1890 1891 if ((_vdp = ld_vers_desc(_name, hash, 1892 &ofl->ofl_verdesc)) == (Ver_desc *)S_ERROR) 1893 return (S_ERROR); 1894 } 1895 1896 /* 1897 * Add the new version descriptor to the parent version 1898 * descriptors reference list. Indicate the version descriptors 1899 * first reference (used for error disgnostics if undefined 1900 * version dependencies remain). 1901 */ 1902 if (ld_vers_find(name, hash, &vdp->vd_deps) == 0) 1903 if (list_appendc(&vdp->vd_deps, _vdp) == 0) 1904 return (S_ERROR); 1905 1906 if (_vdp->vd_ref == 0) 1907 _vdp->vd_ref = vdp; 1908 } 1909 return (1); 1910 } 1911 1912 /* 1913 * Sort the segment list by increasing virtual address. 1914 */ 1915 uintptr_t 1916 ld_sort_seg_list(Ofl_desc *ofl) 1917 { 1918 List seg1, seg2; 1919 Listnode *lnp1, *lnp2, *lnp3; 1920 Sg_desc *sgp1, *sgp2; 1921 1922 seg1.head = seg1.tail = seg2.head = seg2.tail = NULL; 1923 1924 /* 1925 * Add the .phdr and .interp segments to our list. These segments must 1926 * occur before any PT_LOAD segments (refer exec/elf/elf.c). 1927 */ 1928 for (LIST_TRAVERSE(&ofl->ofl_segs, lnp1, sgp1)) { 1929 Word type = sgp1->sg_phdr.p_type; 1930 1931 if ((type == PT_PHDR) || (type == PT_INTERP)) 1932 if (list_appendc(&seg1, sgp1) == 0) 1933 return (S_ERROR); 1934 } 1935 1936 /* 1937 * Add the loadable segments to another list in sorted order. 1938 */ 1939 for (LIST_TRAVERSE(&ofl->ofl_segs, lnp1, sgp1)) { 1940 DBG_CALL(Dbg_map_sort_orig(ofl->ofl_lml, sgp1)); 1941 if (sgp1->sg_phdr.p_type != PT_LOAD) 1942 continue; 1943 if (!(sgp1->sg_flags & FLG_SG_VADDR) || 1944 (sgp1->sg_flags & FLG_SG_EMPTY)) { 1945 if (list_appendc(&seg2, sgp1) == 0) 1946 return (S_ERROR); 1947 } else { 1948 if (seg2.head == NULL) { 1949 if (list_appendc(&seg2, sgp1) == 0) 1950 return (S_ERROR); 1951 continue; 1952 } 1953 lnp3 = NULL; 1954 for (LIST_TRAVERSE(&seg2, lnp2, sgp2)) { 1955 if (!(sgp2->sg_flags & FLG_SG_VADDR) || 1956 (sgp2->sg_flags & FLG_SG_EMPTY)) { 1957 if (lnp3 == NULL) { 1958 if (list_prependc(&seg2, 1959 sgp1) == 0) 1960 return (S_ERROR); 1961 } else { 1962 if (list_insertc(&seg2, 1963 sgp1, lnp3) == 0) 1964 return (S_ERROR); 1965 } 1966 lnp3 = NULL; 1967 break; 1968 } 1969 if (sgp1->sg_phdr.p_vaddr < 1970 sgp2->sg_phdr.p_vaddr) { 1971 if (lnp3 == NULL) { 1972 if (list_prependc(&seg2, 1973 sgp1) == 0) 1974 return (S_ERROR); 1975 } else { 1976 if (list_insertc(&seg2, 1977 sgp1, lnp3) == 0) 1978 return (S_ERROR); 1979 } 1980 lnp3 = NULL; 1981 break; 1982 } else if (sgp1->sg_phdr.p_vaddr > 1983 sgp2->sg_phdr.p_vaddr) { 1984 lnp3 = lnp2; 1985 } else { 1986 eprintf(ofl->ofl_lml, ERR_FATAL, 1987 MSG_INTL(MSG_MAP_SEGSAME), 1988 sgp1->sg_name, sgp2->sg_name); 1989 return (S_ERROR); 1990 } 1991 } 1992 if (lnp3 != NULL) 1993 if (list_appendc(&seg2, sgp1) == 0) 1994 return (S_ERROR); 1995 } 1996 } 1997 1998 /* 1999 * add the sorted loadable segments to our list 2000 */ 2001 for (LIST_TRAVERSE(&seg2, lnp1, sgp1)) { 2002 if (list_appendc(&seg1, sgp1) == 0) 2003 return (S_ERROR); 2004 } 2005 2006 /* 2007 * add all other segments to our list 2008 */ 2009 for (LIST_TRAVERSE(&ofl->ofl_segs, lnp1, sgp1)) { 2010 Word type = sgp1->sg_phdr.p_type; 2011 2012 if ((type != PT_PHDR) && (type != PT_INTERP) && 2013 (type != PT_LOAD)) 2014 if (list_appendc(&seg1, sgp1) == 0) 2015 return (S_ERROR); 2016 } 2017 ofl->ofl_segs.head = ofl->ofl_segs.tail = NULL; 2018 2019 /* 2020 * Now rebuild the original list and process all of the 2021 * segment/section ordering information if present. 2022 */ 2023 for (LIST_TRAVERSE(&seg1, lnp1, sgp1)) { 2024 DBG_CALL(Dbg_map_sort_fini(ofl->ofl_lml, sgp1)); 2025 if (list_appendc(&ofl->ofl_segs, sgp1) == 0) 2026 return (S_ERROR); 2027 } 2028 return (1); 2029 } 2030 2031 2032 2033 /* 2034 * Parse the mapfile. 2035 */ 2036 uintptr_t 2037 ld_map_parse(const char *mapfile, Ofl_desc *ofl) 2038 { 2039 struct stat stat_buf; /* stat of mapfile */ 2040 int mapfile_fd; /* descriptor for mapfile */ 2041 Listnode *lnp1; /* node pointer */ 2042 Listnode *lnp2; /* node pointer */ 2043 Sg_desc *sgp1; /* seg descriptor being manipulated */ 2044 Sg_desc *sgp2; /* temp segment descriptor pointer */ 2045 Ent_desc *enp; /* Segment entrance criteria. */ 2046 Token tok; /* current token. */ 2047 Listnode *e_next = NULL; 2048 /* next place for entrance criterion */ 2049 Boolean new_segment; /* If true, defines new segment. */ 2050 char *name; 2051 static int num_stack = 0; /* number of stack segment */ 2052 int err; 2053 2054 DBG_CALL(Dbg_map_parse(ofl->ofl_lml, mapfile)); 2055 2056 /* 2057 * Determine if we're dealing with a file or a directory. 2058 */ 2059 if (stat(mapfile, &stat_buf) == -1) { 2060 err = errno; 2061 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_SYS_STAT), 2062 mapfile, strerror(err)); 2063 return (S_ERROR); 2064 } 2065 if (S_ISDIR(stat_buf.st_mode)) { 2066 DIR *dirp; 2067 struct dirent *denp; 2068 2069 /* 2070 * Open the directory and interpret each visible file as a 2071 * mapfile. 2072 */ 2073 if ((dirp = opendir(mapfile)) == 0) 2074 return (1); 2075 2076 while ((denp = readdir(dirp)) != NULL) { 2077 char path[PATH_MAX]; 2078 2079 /* 2080 * Ignore any hidden filenames. Construct the full 2081 * pathname to the new mapfile. 2082 */ 2083 if (*denp->d_name == '.') 2084 continue; 2085 (void) snprintf(path, PATH_MAX, MSG_ORIG(MSG_STR_PATH), 2086 mapfile, denp->d_name); 2087 if (ld_map_parse(path, ofl) == S_ERROR) 2088 return (S_ERROR); 2089 } 2090 (void) closedir(dirp); 2091 return (1); 2092 } else if (!S_ISREG(stat_buf.st_mode)) { 2093 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_SYS_NOTREG), 2094 mapfile); 2095 return (S_ERROR); 2096 } 2097 2098 /* 2099 * We read the entire mapfile into memory. 2100 */ 2101 if ((Mapspace = libld_malloc(stat_buf.st_size + 1)) == 0) 2102 return (S_ERROR); 2103 if ((mapfile_fd = open(mapfile, O_RDONLY)) == -1) { 2104 err = errno; 2105 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_SYS_OPEN), 2106 mapfile, strerror(err)); 2107 return (S_ERROR); 2108 } 2109 2110 if (read(mapfile_fd, Mapspace, stat_buf.st_size) != stat_buf.st_size) { 2111 err = errno; 2112 eprintf(ofl->ofl_lml, ERR_FATAL, MSG_INTL(MSG_SYS_READ), 2113 mapfile, strerror(err)); 2114 return (S_ERROR); 2115 } 2116 Mapspace[stat_buf.st_size] = '\0'; 2117 nextchr = Mapspace; 2118 2119 /* 2120 * Set up any global variables, the line number counter and file name. 2121 */ 2122 Line_num = 1; 2123 2124 /* 2125 * We now parse the mapfile until the gettoken routine returns EOF. 2126 */ 2127 while ((tok = gettoken(ofl, mapfile)) != TK_EOF) { 2128 int ndx = -1; 2129 2130 /* 2131 * Don't know which segment yet. 2132 */ 2133 sgp1 = NULL; 2134 2135 /* 2136 * At this point we are at the beginning of a line, and the 2137 * variable `Start_tok' points to the first string on the line. 2138 * All mapfile entries start with some string token except it 2139 * is possible for a scoping definition to start with `{'. 2140 */ 2141 if (tok == TK_LEFTBKT) { 2142 if (map_version(mapfile, (char *)0, ofl) == S_ERROR) 2143 return (S_ERROR); 2144 continue; 2145 } 2146 if (tok != TK_STRING) { 2147 /* LINTED */ 2148 if (tok != (Token)S_ERROR) 2149 eprintf(ofl->ofl_lml, ERR_FATAL, 2150 MSG_INTL(MSG_MAP_EXPSEGNAM), mapfile, 2151 EC_XWORD(Line_num)); 2152 return (S_ERROR); 2153 } 2154 2155 /* 2156 * Save the initial token. 2157 */ 2158 if ((name = libld_malloc(strlen(Start_tok) + 1)) == 0) 2159 return (S_ERROR); 2160 (void) strcpy(name, Start_tok); 2161 2162 /* 2163 * Now check the second character on the line. The special `-' 2164 * and `{' characters do not involve any segment manipulation so 2165 * we handle them first. 2166 */ 2167 if ((tok = gettoken(ofl, mapfile)) == TK_DASH) { 2168 if (map_dash(mapfile, name, ofl) == S_ERROR) 2169 return (S_ERROR); 2170 continue; 2171 } 2172 if (tok == TK_LEFTBKT) { 2173 if (map_version(mapfile, name, ofl) == S_ERROR) 2174 return (S_ERROR); 2175 continue; 2176 } 2177 2178 /* 2179 * If we're here we need to interpret the first string as a 2180 * segment name. Find the segment named in the token. 2181 */ 2182 for (LIST_TRAVERSE(&ofl->ofl_segs, lnp1, sgp2)) { 2183 ndx++; 2184 if (strcmp(sgp2->sg_name, name) == 0) { 2185 sgp1 = sgp2; 2186 sgp2->sg_flags &= ~FLG_SG_DISABLED; 2187 new_segment = FALSE; 2188 break; 2189 } 2190 } 2191 2192 /* 2193 * If the second token is a '|' then we had better 2194 * of found a segment. It is illegal to perform 2195 * section within segment ordering before the segment 2196 * has been declared. 2197 */ 2198 if (tok == TK_PIPE) { 2199 if (sgp1 == NULL) { 2200 eprintf(ofl->ofl_lml, ERR_FATAL, 2201 MSG_INTL(MSG_MAP_SECINSEG), mapfile, 2202 EC_XWORD(Line_num), name); 2203 return (S_ERROR); 2204 } else { 2205 if (map_pipe(ofl, mapfile, sgp1) == S_ERROR) 2206 return (S_ERROR); 2207 continue; 2208 } 2209 } 2210 2211 /* 2212 * If segment is still NULL then it does not exist. Create a 2213 * new segment, and leave its values as 0 so that map_equal() 2214 * can detect changing attributes. 2215 */ 2216 if (sgp1 == NULL) { 2217 if ((sgp1 = libld_calloc(sizeof (Sg_desc), 2218 1)) == 0) 2219 return (S_ERROR); 2220 sgp1->sg_phdr.p_type = PT_NULL; 2221 sgp1->sg_name = name; 2222 new_segment = TRUE; 2223 ndx = -1; 2224 } 2225 2226 if ((strcmp(sgp1->sg_name, MSG_ORIG(MSG_STR_INTERP)) == 0) || 2227 (strcmp(sgp1->sg_name, MSG_ORIG(MSG_STR_LD_DYNAMIC)) == 2228 0)) { 2229 eprintf(ofl->ofl_lml, ERR_FATAL, 2230 MSG_INTL(MSG_MAP_SEGRESV), mapfile, 2231 EC_XWORD(Line_num)); 2232 return (S_ERROR); 2233 } 2234 2235 /* 2236 * Now check the second token from the input line. 2237 */ 2238 if (tok == TK_EQUAL) { 2239 if (strcmp(sgp1->sg_name, 2240 MSG_ORIG(MSG_STR_HWCAP_1)) == 0) { 2241 if (map_cap(mapfile, CA_SUNW_HW_1, 2242 ofl) == S_ERROR) 2243 return (S_ERROR); 2244 DBG_CALL(Dbg_cap_mapfile(ofl->ofl_lml, 2245 CA_SUNW_HW_1, ofl->ofl_hwcap_1, M_MACH)); 2246 2247 } else if (strcmp(sgp1->sg_name, 2248 MSG_ORIG(MSG_STR_SFCAP_1)) == 0) { 2249 if (map_cap(mapfile, CA_SUNW_SF_1, 2250 ofl) == S_ERROR) 2251 return (S_ERROR); 2252 DBG_CALL(Dbg_cap_mapfile(ofl->ofl_lml, 2253 CA_SUNW_SF_1, ofl->ofl_sfcap_1, M_MACH)); 2254 2255 } else { 2256 if (map_equal(mapfile, sgp1, ofl) == S_ERROR) 2257 return (S_ERROR); 2258 ofl->ofl_flags |= FLG_OF_SEGSORT; 2259 DBG_CALL(Dbg_map_set_equal(new_segment)); 2260 } 2261 } else if (tok == TK_COLON) { 2262 /* 2263 * If this is an existing segment reservation, sections 2264 * can't be assigned to it. 2265 */ 2266 if ((new_segment == FALSE) && 2267 (sgp1->sg_flags & FLG_SG_EMPTY)) { 2268 eprintf(ofl->ofl_lml, ERR_FATAL, 2269 MSG_INTL(MSG_MAP_SEGEMPSEC), mapfile, 2270 EC_XWORD(Line_num)); 2271 return (S_ERROR); 2272 } 2273 2274 /* 2275 * We are looking at a new entrance criteria line. 2276 * Note that entrance criteria are added in the order 2277 * they are found in the map file, but are placed 2278 * before any default criteria. 2279 */ 2280 if ((enp = libld_calloc(sizeof (Ent_desc), 1)) == 0) 2281 return (S_ERROR); 2282 enp->ec_segment = sgp1; 2283 if (e_next == NULL) { 2284 if ((e_next = list_prependc(&ofl->ofl_ents, 2285 enp)) == 0) 2286 return (S_ERROR); 2287 } else { 2288 if ((e_next = list_insertc(&ofl->ofl_ents, 2289 enp, e_next)) == 0) 2290 return (S_ERROR); 2291 } 2292 2293 if (map_colon(ofl, mapfile, enp) == S_ERROR) 2294 return (S_ERROR); 2295 ofl->ofl_flags |= FLG_OF_SEGSORT; 2296 DBG_CALL(Dbg_map_ent(ofl->ofl_lml, new_segment, 2297 enp, ofl)); 2298 } else if (tok == TK_ATSIGN) { 2299 if (map_atsign(mapfile, sgp1, ofl) == S_ERROR) 2300 return (S_ERROR); 2301 DBG_CALL(Dbg_map_set_atsign(new_segment)); 2302 } else { 2303 /* LINTED */ 2304 if (tok != (Token)S_ERROR) { 2305 eprintf(ofl->ofl_lml, ERR_FATAL, 2306 MSG_INTL(MSG_MAP_EXPEQU), mapfile, 2307 EC_XWORD(Line_num)); 2308 return (S_ERROR); 2309 } 2310 } 2311 2312 /* 2313 * Having completed parsing an entry in the map file determine 2314 * if the segment to which it applies is new. 2315 */ 2316 if (new_segment) { 2317 int src_type, dst_type; 2318 2319 /* 2320 * If specific fields have not been supplied via 2321 * map_equal(), make sure defaults are supplied. 2322 */ 2323 if (sgp1->sg_phdr.p_type == PT_NULL) { 2324 sgp1->sg_phdr.p_type = PT_LOAD; 2325 sgp1->sg_flags |= FLG_SG_TYPE; 2326 } 2327 if ((sgp1->sg_phdr.p_type == PT_LOAD) && 2328 (!(sgp1->sg_flags & FLG_SG_FLAGS))) { 2329 sgp1->sg_phdr.p_flags = PF_R + PF_W + PF_X; 2330 sgp1->sg_flags |= FLG_SG_FLAGS; 2331 } 2332 2333 /* 2334 * Determine where the new segment should be inserted 2335 * in the seg_desc[] list. Presently the user can 2336 * only add a LOAD or NOTE segment. Note that these 2337 * segments must be added after any PT_PHDR and 2338 * PT_INTERP (refer Generic ABI, Page 5-4). 2339 */ 2340 switch (sgp1->sg_phdr.p_type) { 2341 case PT_LOAD: 2342 if (sgp1->sg_flags & FLG_SG_EMPTY) 2343 src_type = 4; 2344 else 2345 src_type = 3; 2346 break; 2347 case PT_SUNWSTACK: 2348 src_type = 8; 2349 if (++num_stack >= 2) { 2350 /* 2351 * Currently the number of sunw_stack 2352 * segment is limited to 1. 2353 */ 2354 eprintf(ofl->ofl_lml, ERR_WARNING, 2355 MSG_INTL(MSG_MAP_NOSTACK2), 2356 mapfile, EC_XWORD(Line_num)); 2357 continue; 2358 } 2359 break; 2360 case PT_NOTE: 2361 src_type = 9; 2362 break; 2363 default: 2364 eprintf(ofl->ofl_lml, ERR_FATAL, 2365 MSG_INTL(MSG_MAP_UNKSEGTYP), mapfile, 2366 EC_XWORD(Line_num), 2367 EC_WORD(sgp1->sg_phdr.p_type)); 2368 return (S_ERROR); 2369 } 2370 lnp2 = NULL; 2371 for (LIST_TRAVERSE(&ofl->ofl_segs, lnp1, sgp2)) { 2372 ndx++; 2373 switch (sgp2->sg_phdr.p_type) { 2374 case PT_PHDR: 2375 dst_type = 0; 2376 break; 2377 case PT_INTERP: 2378 dst_type = 1; 2379 break; 2380 case PT_SUNWCAP: 2381 dst_type = 2; 2382 break; 2383 case PT_LOAD: 2384 dst_type = 3; 2385 break; 2386 case PT_DYNAMIC: 2387 dst_type = 5; 2388 break; 2389 case PT_SUNWDTRACE: 2390 dst_type = 6; 2391 break; 2392 case PT_SHLIB: 2393 dst_type = 7; 2394 break; 2395 case PT_SUNWSTACK: 2396 dst_type = 8; 2397 break; 2398 case PT_NOTE: 2399 dst_type = 9; 2400 break; 2401 case PT_SUNWBSS: 2402 dst_type = 10; 2403 break; 2404 case PT_TLS: 2405 dst_type = 11; 2406 break; 2407 case PT_NULL: 2408 dst_type = 12; 2409 break; 2410 default: 2411 eprintf(ofl->ofl_lml, ERR_FATAL, 2412 MSG_INTL(MSG_MAP_UNKSEGTYP), 2413 mapfile, EC_XWORD(Line_num), 2414 EC_WORD(sgp2->sg_phdr.p_type)); 2415 return (S_ERROR); 2416 } 2417 if (src_type <= dst_type) { 2418 if (lnp2 == NULL) { 2419 if (list_prependc( 2420 &ofl->ofl_segs, sgp1) == 0) 2421 return (S_ERROR); 2422 } else { 2423 if (list_insertc(&ofl->ofl_segs, 2424 sgp1, lnp2) == 0) 2425 return (S_ERROR); 2426 } 2427 break; 2428 } 2429 lnp2 = lnp1; 2430 } 2431 } 2432 DBG_CALL(Dbg_map_seg(ofl, ndx, sgp1)); 2433 } 2434 2435 /* 2436 * If the output file is a static file without an interpreter 2437 * and if any virtual address is specified, then assume $n flag 2438 * for backward compatiblity. 2439 */ 2440 if (!(ofl->ofl_flags & FLG_OF_DYNAMIC) && 2441 !(ofl->ofl_flags & FLG_OF_RELOBJ) && 2442 !(ofl->ofl_osinterp) && 2443 (ofl->ofl_flags1 & FLG_OF1_VADDR)) 2444 ofl->ofl_dtflags_1 |= DF_1_NOHDR; 2445 2446 /* 2447 * If the output file is a relocatable file, 2448 * then ?N have no effect. Knock it off. 2449 */ 2450 if (ofl->ofl_flags & FLG_OF_RELOBJ) 2451 ofl->ofl_dtflags_1 &= ~DF_1_NOHDR; 2452 2453 return (1); 2454 } 2455