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 2009 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 /* 31 * Local include file for ld library. 32 */ 33 34 #ifndef _LIBLD_DOT_H 35 #define _LIBLD_DOT_H 36 37 #include <libld.h> 38 #include <_libelf.h> 39 #include <debug.h> 40 #include <conv.h> 41 #include <msg.h> 42 #include <reloc_defs.h> 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 /* 49 * In order to allow for cross linking, we need to be able to build 50 * libld with support for multiple targets within a single object. 51 * This is done using a global variable (ld_targ) of type Target to 52 * access target-specific code for the current target via indirection. 53 */ 54 55 /* 56 * Machine information for target 57 */ 58 typedef struct { 59 Half m_mach; /* ELF machine code for target */ 60 Half m_machplus; /* Alt ELF machine code for target */ 61 /* Used for EM_SPARC32PLUS */ 62 Word m_flagsplus; /* ELF header flags used to identify */ 63 /* a machplus object */ 64 uchar_t m_class; /* Target ELFCLASS */ 65 uchar_t m_data; /* Target byte order */ 66 67 Xword m_segm_align; /* segment alignment */ 68 Xword m_segm_origin; /* Default 1st segment origin */ 69 Xword m_segm_aorigin; /* Alternative 1st segment origin */ 70 Word m_dataseg_perm; /* data segment permission mask */ 71 Word m_word_align; /* alignment to use for Word sections */ 72 const char *m_def_interp; /* Def. interpreter for dyn objects */ 73 74 /* Relocation type codes */ 75 Word m_r_arrayaddr; 76 Word m_r_copy; 77 Word m_r_glob_dat; 78 Word m_r_jmp_slot; 79 Word m_r_num; 80 Word m_r_none; 81 Word m_r_relative; 82 Word m_r_register; 83 84 /* Relocation related constants */ 85 Word m_rel_dt_count; /* Either DT_REL or DT_RELA */ 86 Word m_rel_dt_ent; /* Either DT_RELENT or DT_RELAENT */ 87 Word m_rel_dt_size; /* Either DT_RELSZ or DT_RELASZ */ 88 Word m_rel_dt_type; /* Either DT_RELCOUNT or DT_RELACOUNT */ 89 Word m_rel_sht_type; /* Either SHT_REL or SHT_RELA */ 90 91 /* GOT related constants */ 92 Word m_got_entsize; 93 Word m_got_xnumber; /* reserved # of got ents */ 94 95 /* PLT related constants */ 96 Word m_plt_align; 97 Word m_plt_entsize; 98 Word m_plt_reservsz; 99 Word m_plt_shf_flags; 100 101 Word m_dt_register; 102 } Target_mach; 103 104 105 /* 106 * Section identifiers, used to order sections in output object 107 */ 108 typedef struct { 109 Word id_array; 110 Word id_bss; 111 Word id_cap; 112 Word id_data; 113 Word id_dynamic; 114 Word id_dynsort; 115 Word id_dynstr; 116 Word id_dynsym; 117 Word id_dynsym_ndx; 118 Word id_got; 119 Word id_gotdata; 120 Word id_hash; 121 Word id_interp; 122 Word id_lbss; 123 Word id_ldynsym; 124 Word id_note; 125 Word id_null; 126 Word id_plt; 127 Word id_rel; 128 Word id_strtab; 129 Word id_syminfo; 130 Word id_symtab; 131 Word id_symtab_ndx; 132 Word id_text; 133 Word id_tls; 134 Word id_tlsbss; 135 Word id_unknown; 136 Word id_unwind; 137 Word id_user; 138 Word id_version; 139 } Target_machid; 140 141 /* 142 * Target_nullfunc supplies machine code for generating a 143 * 144 * void (*)(void) 145 * 146 * unnamed function. Such a function can be called, and returns 147 * immediately without doing any work. This is used to back FUNC 148 * symbol definitions added with a mapfile. 149 * 150 * The machine instructions are specified as an array of bytes rather 151 * than a larger integer type in order to avoid byte order issues that 152 * can otherwise occur in cross linking. 153 */ 154 typedef struct { 155 const uchar_t *nf_template; /* Array of machine inst. bytes */ 156 size_t nf_size; /* # bytes in nf_template */ 157 } Target_nullfunc; 158 159 /* 160 * Target_machrel holds pointers to the reloc_table and machrel functions 161 * for a given target machine. 162 * 163 * The following function pointers are allowed to be NULL, if the 164 * underlying target does not require the specified operation. All 165 * other functions must be supplied: 166 * 167 * mr_assign_got 168 * mr_reloc_register 169 * mr_reloc_GOTOP 170 * mr_allocate_got 171 */ 172 typedef struct { 173 const Rel_entry *mr_reloc_table; 174 175 Word (* mr_init_rel)(Rel_desc *, void *); 176 void (* mr_mach_eflags)(Ehdr *, Ofl_desc *); 177 void (* mr_mach_make_dynamic)(Ofl_desc *, size_t *); 178 void (* mr_mach_update_odynamic)(Ofl_desc *, Dyn **); 179 Xword (* mr_calc_plt_addr)(Sym_desc *, Ofl_desc *); 180 uintptr_t (* mr_perform_outreloc)(Rel_desc *, Ofl_desc *); 181 uintptr_t (* mr_do_activerelocs)(Ofl_desc *); 182 uintptr_t (* mr_add_outrel)(Word, Rel_desc *, Ofl_desc *); 183 uintptr_t (* mr_reloc_register)(Rel_desc *, Is_desc *, 184 Ofl_desc *); 185 uintptr_t (* mr_reloc_local)(Rel_desc *, Ofl_desc *); 186 uintptr_t (* mr_reloc_GOTOP)(Boolean, Rel_desc *, Ofl_desc *); 187 uintptr_t (* mr_reloc_TLS)(Boolean, Rel_desc *, Ofl_desc *); 188 uintptr_t (* mr_assign_got)(Ofl_desc *, Sym_desc *); 189 190 Gotndx *(* mr_find_gotndx)(List *, Gotref, Ofl_desc *, 191 Rel_desc *); 192 Xword (* mr_calc_got_offset)(Rel_desc *, Ofl_desc *); 193 uintptr_t (* mr_assign_got_ndx)(List *, Gotndx *, Gotref, 194 Ofl_desc *, Rel_desc *, Sym_desc *); 195 void (* mr_assign_plt_ndx)(Sym_desc *, Ofl_desc *); 196 uintptr_t (* mr_allocate_got)(Ofl_desc *); 197 uintptr_t (* mr_fillin_gotplt)(Ofl_desc *); 198 } Target_machrel; 199 200 201 /* 202 * Target_machsym holds pointers to the machsym functions 203 * for a given target machine. 204 * 205 * These fields are allowed to be NULL for targets that do not require 206 * special handling of register symbols. Register symbols are used by 207 * sparc targets. If any of these fields are non-NULL, all of them are 208 * required to be present (use empty stub routines if necessary). 209 */ 210 typedef struct { 211 int (* ms_reg_check)(Sym_desc *, Sym *, const char *, 212 Ifl_desc *, Ofl_desc *); 213 int (* ms_mach_sym_typecheck)(Sym_desc *, Sym *, 214 Ifl_desc *, Ofl_desc *); 215 const char *(* ms_is_regsym)(Ofl_desc *, Ifl_desc *, Sym *, 216 const char *, int, Word, const char *, Word *); 217 Sym_desc *(* ms_reg_find)(Sym * sym, Ofl_desc * ofl); 218 int (* ms_reg_enter)(Sym_desc *, Ofl_desc *); 219 } Target_machsym; 220 221 /* 222 * amd64 unwind header support 223 * 224 * These fields are allowed to be NULL for targets that do not support 225 * amd64 unwind headers. If any of these fields are non-NULL, all of them are 226 * required to be present (use empty stub routines if necessary). 227 */ 228 typedef struct { 229 uintptr_t (* uw_make_unwindhdr)(Ofl_desc *); 230 uintptr_t (* uw_populate_unwindhdr)(Ofl_desc *); 231 uintptr_t (* uw_append_unwind)(Os_desc *, Ofl_desc *); 232 } Target_unwind; 233 234 typedef struct { 235 Target_mach t_m; 236 Target_machid t_id; 237 Target_nullfunc t_nf; 238 Target_machrel t_mr; 239 Target_machsym t_ms; 240 Target_unwind t_uw; 241 } Target; 242 243 244 /* 245 * Types of bss sections 246 */ 247 typedef enum { 248 MAKE_BSS, 249 MAKE_LBSS, 250 MAKE_TLS 251 } Bss_Type; 252 253 /* 254 * Structure to manage the update of weak symbols from their associated alias. 255 */ 256 typedef struct wk_desc { 257 Sym *wk_symtab; /* the .symtab entry */ 258 Sym *wk_dynsym; /* the .dynsym entry */ 259 Sym_desc *wk_weak; /* the original weak symbol */ 260 Sym_desc *wk_alias; /* the real symbol */ 261 } Wk_desc; 262 263 /* 264 * Structure to manage the support library interfaces. 265 */ 266 typedef struct func_list { 267 const char *fl_obj; /* name of support object */ 268 /* function is from */ 269 void (*fl_fptr)(); /* function pointer */ 270 uint_t fl_version; /* ld_version() level */ 271 } Func_list; 272 273 typedef struct support_list { 274 const char *sup_name; /* ld_support function name */ 275 List sup_funcs; /* list of support functions */ 276 } Support_list; 277 278 /* 279 * Structure to manage a sorted output relocation list. 280 * 281 * rl_key1 -> pointer to needed ndx 282 * rl_key2 -> pointer to symbol relocation is against 283 * rl_key3 -> virtual offset of relocation 284 */ 285 typedef struct reloc_list { 286 Sym_desc *rl_key2; 287 Xword rl_key3; 288 Rel_desc *rl_rsp; 289 Half rl_key1; 290 } Reloc_list; 291 292 293 typedef struct sym_s_list { 294 Word sl_hval; 295 Sym_desc *sl_sdp; 296 } Sym_s_list; 297 298 /* 299 * ld heap management structure 300 */ 301 typedef struct _ld_heap Ld_heap; 302 struct _ld_heap { 303 Ld_heap *lh_next; 304 void *lh_free; 305 void *lh_end; 306 }; 307 308 #define HEAPBLOCK 0x800000 /* default allocation block size */ 309 #define HEAPALIGN 0x8 /* heap blocks alignment requirement */ 310 311 /* 312 * Dynamic per-symbol filtee string table descriptor. This associates filtee 313 * strings that will be created in the .dynstr, with .dynamic entries. 314 */ 315 typedef struct { 316 char *dft_str; /* dynstr string */ 317 Word dft_flag; /* auxiliary/filtee type */ 318 Half dft_ndx; /* eventual ndx into .dynamic */ 319 } Dfltr_desc; 320 321 /* 322 * Per-symbol filtee descriptor. This associates symbol definitions with 323 * their filtees. 324 */ 325 typedef struct { 326 Sym_desc *sft_sdp; /* symbol descriptor */ 327 Aliste sft_idx; /* index into dtstr descriptor */ 328 } Sfltr_desc; 329 330 /* 331 * Define Alist initialization sizes. 332 */ 333 #define AL_CNT_IFL_GROUPS 20 /* ifl_groups initial alist count */ 334 #define AL_CNT_OFL_DTSFLTRS 4 /* ofl_dtsfltrs initial alist count */ 335 #define AL_CNT_OFL_SYMFLTRS 20 /* ofl_symfltrs initial alist count */ 336 #define AL_CNT_OS_MSTRISDESCS 10 /* os_mstrisdescs */ 337 #define AL_CNT_OS_RELISDESCS 100 /* os_relisdescs */ 338 #define AL_CNT_OS_COMDATS 20 /* os_comdats */ 339 #define AL_CNT_SG_OSDESC 40 /* sg_osdescs initial alist count */ 340 #define AL_CNT_SG_SECORDER 40 /* sg_secorder initial alist count */ 341 #define AL_CNT_STRMRGREL 500 /* ld_make_strmerge() reloc alist cnt */ 342 #define AL_CNT_STRMRGSYM 20 /* ld_make_strmerge() sym alist cnt */ 343 344 /* 345 * Return codes for {tls|got}_fixups() routines 346 */ 347 typedef enum { 348 FIX_ERROR, /* fatal error - time to punt */ 349 FIX_DONE, /* relocation done - no further processing required */ 350 FIX_RELOC /* do_reloc() relocation processing required */ 351 } Fixupret; 352 353 #ifndef FILENAME_MAX 354 #define FILENAME_MAX BUFSIZ /* maximum length of a path name */ 355 #endif 356 357 /* 358 * We pad the end of the .dynstr section with a block of DYNSTR_EXTRA_PAD 359 * bytes, and we insert DYNAMIC_EXTRA_ELTS unused items into the 360 * .dynamic section (with value DT_NULL). This provides the resources needed 361 * to add and/or alter string items in the .dynamic section, such as runpath. 362 */ 363 #define DYNSTR_EXTRA_PAD 512 364 #define DYNAMIC_EXTRA_ELTS 10 365 366 /* 367 * Relocation buckets are sized based on the number of input relocations and 368 * the following constants. 369 */ 370 #define REL_HAIDESCNO 1000 /* high water mark active buckets */ 371 #define REL_LAIDESCNO 50 /* low water mark active buckets */ 372 #define REL_HOIDESCNO 500 /* high water mark output buckets */ 373 #define REL_LOIDESCNO 10 /* low water mark output buckets */ 374 375 extern char *Plibpath; 376 extern char *Llibdir; 377 extern char *Ulibdir; 378 extern Ld_heap *ld_heap; 379 extern List lib_support; 380 extern int demangle_flag; 381 extern const Msg reject[]; 382 extern int Verbose; 383 extern const int ldynsym_symtype[STT_NUM]; 384 extern const int dynsymsort_symtype[STT_NUM]; 385 386 387 /* 388 * Given a symbol of a type that is allowed within a .SUNW_dynsymsort or 389 * .SUNW_dyntlssort section, examine the symbol attributes to determine 390 * if this particular symbol should be included or not. 391 * 392 * entry: 393 * The symbol must have an allowed type: Either a type verified by 394 * dynsymsort_symtype[] or STT_TLS. 395 * 396 * _sdp - Pointer to symbol descriptor 397 * _sym - Pointer to symbol referenced by _sdp. 398 * 399 * _sym is derivable from _sdp: _sdp->sd_sym 400 * However, most callers assign it to a local variable for efficiency, 401 * and this macro allows such a variable to be used within. If you 402 * don't have such a variable, supply _sdp->sd_sym. 403 * 404 * The tests used require some explanation: 405 * 406 * (_sdp->sd_flags & FLG_SY_DYNSORT) 407 * Some special symbols are kept even if they don't meet the 408 * usual requirements. These symbols have the FLG_SY_DYNSORT 409 * bit set. If this bit isn't set then we look at the other 410 * attributes. 411 * 412 * (((_sdp->sd_ref != REF_DYN_NEED) && 413 * (_sdp->sd_sym->st_shndx != SHN_UNDEF)) 414 * || (_sdp->sd_flags & FLG_SY_MVTOCOMM)) 415 * We do not want to include symbols that are not defined within 416 * the object we are creating. REF_DYN_NEED corresponds to those 417 * UNDEF items. However, if the symbol is the target of a copy 418 * relocation, then it effectively becomes defined within the 419 * object after all. FLG_SY_MVTOCOMM indicates a copy relocation, 420 * and prevents us from culling those exceptions. 421 * 422 * (_sym->st_size != 0) 423 * Symbols with 0 length are labels injected by the compilers 424 * or the linker for purposes of code generation, and do 425 * not directly correspond to actual code. In fact, most of the 426 * symbols we mark with FLG_SY_DYNSORT need that flag set because 427 * they have size 0. This size test filters out the others. 428 * 429 * !(_sdp->sd_flags & FLG_SY_NODYNSORT) 430 * Some symbols are not kept, even though they do meet the usual 431 * requirements. These symbols have FLG_SY_NODYNSORT set. 432 * For example, if there are weak and non-weak versions of a given 433 * symbol, we only want to keep one of them. So, we set 434 * FLG_SY_NODYNSORT on the one we don't want. 435 */ 436 #define DYNSORT_TEST_ATTR(_sdp, _sym) \ 437 ((_sdp->sd_flags & FLG_SY_DYNSORT) || \ 438 ((((_sdp->sd_ref != REF_DYN_NEED) && \ 439 (_sdp->sd_sym->st_shndx != SHN_UNDEF)) || \ 440 (_sdp->sd_flags & FLG_SY_MVTOCOMM)) && \ 441 (_sym->st_size != 0) && \ 442 !(_sdp->sd_flags & FLG_SY_NODYNSORT))) 443 444 /* 445 * We use output section descriptor counters to add up the number of 446 * symbol indexes to put in the .SUNW_dynsort and .SUNW_dyntlssort sections. 447 * Non-TLS symbols are counted by ofl->ofl_dynsymsortcnt, while TLS symbols are 448 * counted by ofl->ofl_dyntlssortcnt. This computation is done inline in 449 * several places. The DYNSORT_COUNT macro allows us to generate this from 450 * a single description. 451 * 452 * entry: 453 * _sdp, _sym - As per DYNSORT_TEST_ATTR 454 * _type - Type of symbol (STT_*) 455 * _inc_or_dec_op - Either ++, or --. This specifies the operation 456 * to be applied to the counter, and determines whether we 457 * are adding, or removing, a symbol from .SUNW_dynsymsort. 458 * 459 * Note that _type is derivable from _sym: ELF_ST_TYPE(_sdp->sd_sym->st_info). 460 * Most callers already have it in a variable, so this allows us to use that 461 * variable. If you don't have such a variable, use ELF_ST_TYPE() as shown. 462 */ 463 #define DYNSORT_COUNT(_sdp, _sym, _type, _inc_or_dec_op) \ 464 { \ 465 Word *_cnt_var; \ 466 \ 467 if (dynsymsort_symtype[_type]) { /* Non-TLS counter */ \ 468 _cnt_var = &ofl->ofl_dynsymsortcnt; \ 469 } else if ((_type) == STT_TLS) { /* TLS counter */ \ 470 _cnt_var = &ofl->ofl_dyntlssortcnt; \ 471 } else { /* Don't count this symbol */ \ 472 _cnt_var = NULL; \ 473 } \ 474 if ((_cnt_var != NULL) && DYNSORT_TEST_ATTR(_sdp, _sym)) \ 475 (*_cnt_var)_inc_or_dec_op; /* Increment/Decrement */ \ 476 } 477 478 /* 479 * The OFL_SWAP_RELOC macros are used to determine whether 480 * relocation processing needs to swap the data being relocated. 481 * It is an optimization to ld_swap_reloc_data(), as it avoids 482 * the function call in the case where the linker host and the 483 * target have the same byte order. 484 */ 485 #define OFL_SWAP_RELOC_DATA(_ofl, _rel) \ 486 (((_ofl)->ofl_flags1 & FLG_OF1_ENCDIFF) && \ 487 ld_swap_reloc_data(_ofl, _rel)) 488 489 /* 490 * Define an AVL node for maintaining input section descriptors. AVL trees of 491 * these descriptors are used to process group and COMDAT section. 492 */ 493 typedef struct { 494 avl_node_t isd_avl; /* avl book-keeping (see SGSOFFSETOF) */ 495 Is_desc *isd_isp; /* input section descriptor */ 496 uint_t isd_hash; /* input section name hash value */ 497 } Isd_node; 498 499 /* 500 * Local functions. 501 */ 502 extern char *add_string(char *, char *); 503 extern const char *demangle(const char *); 504 505 extern void lds_atexit(Ofl_desc *, int); 506 507 extern void libld_free(void *); 508 extern void *libld_malloc(size_t); 509 extern void *libld_realloc(void *, size_t); 510 511 extern Listnode *list_appendc(List *, const void *); 512 extern Listnode *list_insertc(List *, const void *, Listnode *); 513 extern Listnode *list_prependc(List *, const void *); 514 extern Listnode *list_where(List *, Word num); 515 516 extern int isdavl_compare(const void *, const void *); 517 518 extern Sdf_desc *sdf_add(const char *, List *); 519 extern Sdf_desc *sdf_find(const char *, List *); 520 521 #if defined(_ELF64) 522 523 #define ld_add_actrel ld64_add_actrel 524 #define ld_add_libdir ld64_add_libdir 525 #define ld_adj_movereloc ld64_adj_movereloc 526 #define ld_am_I_partial ld64_am_I_partial 527 #define ld_append_isp ld64_append_isp 528 #define ld_ar_member ld64_ar_member 529 #define ld_ar_setup ld64_ar_setup 530 #define ld_assign_got_TLS ld64_assign_got_TLS 531 #define ld_bswap_Word ld64_bswap_Word 532 #define ld_bswap_Xword ld64_bswap_Xword 533 #define ld_disp_errmsg ld64_disp_errmsg 534 #define ld_ent_check ld64_ent_check 535 #define ld_exit ld64_exit 536 #define ld_find_library ld64_find_library 537 #define ld_finish_libs ld64_finish_libs 538 #define ld_get_group ld64_get_group 539 #define ld_group_process ld64_group_process 540 #define ld_lib_setup ld64_lib_setup 541 #define ld_init ld64_init 542 #define ld_lcm ld64_lcm 543 #define ld_make_bss ld64_make_bss 544 #define ld_make_data ld64_make_data 545 #define ld_make_got ld64_make_got 546 #define ld_make_parexpn_data ld64_make_parexpn_data 547 #define ld_make_sunwmove ld64_make_sunmove 548 #define ld_make_text ld64_make_text 549 #define ld_map_out ld64_map_out 550 #define ld_map_parse ld64_map_parse 551 #define ld_open_outfile ld64_open_outfile 552 #define ld_place_section ld64_place_section 553 #define ld_process_archive ld64_process_archive 554 #define ld_process_files ld64_process_files 555 #define ld_process_flags ld64_process_flags 556 #define ld_process_ifl ld64_process_ifl 557 #define ld_process_open ld64_process_open 558 #define ld_process_ordered ld64_process_ordered 559 #define ld_process_sym_reloc ld64_process_sym_reloc 560 #define ld_recalc_shdrcnt ld64_recalc_shdrcnt 561 #define ld_reloc_GOT_relative ld64_reloc_GOT_relative 562 #define ld_reloc_plt ld64_reloc_plt 563 #define ld_reloc_remain_entry ld64_reloc_remain_entry 564 #define ld_reloc_targval_get ld64_reloc_targval_get 565 #define ld_reloc_targval_set ld64_reloc_targval_set 566 #define ld_sec_validate ld64_sec_validate 567 #define ld_section_reld_name ld64_section_reld_name 568 #define ld_sort_ordered ld64_sort_ordered 569 #define ld_sort_seg_list ld64_sort_seg_list 570 #define ld_sunw_ldmach ld64_sunw_ldmach 571 #define ld_sunwmove_preprocess ld64_sunwmove_preprocess 572 #define ld_sup_atexit ld64_sup_atexit 573 #define ld_sup_open ld64_sup_open 574 #define ld_sup_file ld64_sup_file 575 #define ld_sup_loadso ld64_sup_loadso 576 #define ld_sup_input_done ld64_sup_input_done 577 #define ld_sup_input_section ld64_sup_input_section 578 #define ld_sup_section ld64_sup_section 579 #define ld_sup_start ld64_sup_start 580 #define ld_swap_reloc_data ld64_swap_reloc_data 581 #define ld_sym_add_u ld64_sym_add_u 582 #define ld_sym_adjust_vis ld64_sym_adjust_vis 583 #define ld_sym_avl_comp ld64_sym_avl_comp 584 #define ld_sym_copy ld64_sym_copy 585 #define ld_sym_enter ld64_sym_enter 586 #define ld_sym_find ld64_sym_find 587 #define ld_sym_nodirect ld64_sym_nodirect 588 #define ld_sym_process ld64_sym_process 589 #define ld_sym_resolve ld64_sym_resolve 590 #define ld_sym_spec ld64_sym_spec 591 #define ld_targ ld64_targ 592 #define ld_targ_init_sparc ld64_targ_init_sparc 593 #define ld_targ_init_x86 ld64_targ_init_x86 594 #define ld_vers_base ld64_vers_base 595 #define ld_vers_check_defs ld64_vers_check_defs 596 #define ld_vers_check_need ld64_vers_check_need 597 #define ld_vers_def_process ld64_vers_def_process 598 #define ld_vers_desc ld64_vers_desc 599 #define ld_vers_find ld64_vers_find 600 #define ld_vers_need_process ld64_vers_need_process 601 #define ld_vers_promote ld64_vers_promote 602 #define ld_vers_sym_process ld64_vers_sym_process 603 #define ld_vers_verify ld64_vers_verify 604 605 #else 606 607 #define ld_add_actrel ld32_add_actrel 608 #define ld_add_libdir ld32_add_libdir 609 #define ld_adj_movereloc ld32_adj_movereloc 610 #define ld_am_I_partial ld32_am_I_partial 611 #define ld_append_isp ld32_append_isp 612 #define ld_ar_member ld32_ar_member 613 #define ld_ar_setup ld32_ar_setup 614 #define ld_assign_got_TLS ld32_assign_got_TLS 615 #define ld_bswap_Word ld32_bswap_Word 616 #define ld_bswap_Xword ld32_bswap_Xword 617 #define ld_disp_errmsg ld32_disp_errmsg 618 #define ld_ent_check ld32_ent_check 619 #define ld_exit ld32_exit 620 #define ld_find_library ld32_find_library 621 #define ld_finish_libs ld32_finish_libs 622 #define ld_section_reld_name ld32_section_reld_name 623 #define ld_get_group ld32_get_group 624 #define ld_group_process ld32_group_process 625 #define ld_lib_setup ld32_lib_setup 626 #define ld_init ld32_init 627 #define ld_lcm ld32_lcm 628 #define ld_make_bss ld32_make_bss 629 #define ld_make_data ld32_make_data 630 #define ld_make_got ld32_make_got 631 #define ld_make_parexpn_data ld32_make_parexpn_data 632 #define ld_make_sunwmove ld32_make_sunmove 633 #define ld_make_text ld32_make_text 634 #define ld_map_out ld32_map_out 635 #define ld_map_parse ld32_map_parse 636 #define ld_open_outfile ld32_open_outfile 637 #define ld_place_section ld32_place_section 638 #define ld_process_archive ld32_process_archive 639 #define ld_process_files ld32_process_files 640 #define ld_process_flags ld32_process_flags 641 #define ld_process_ifl ld32_process_ifl 642 #define ld_process_open ld32_process_open 643 #define ld_process_ordered ld32_process_ordered 644 #define ld_process_sym_reloc ld32_process_sym_reloc 645 #define ld_recalc_shdrcnt ld32_recalc_shdrcnt 646 #define ld_reloc_GOT_relative ld32_reloc_GOT_relative 647 #define ld_reloc_plt ld32_reloc_plt 648 #define ld_reloc_remain_entry ld32_reloc_remain_entry 649 #define ld_reloc_targval_get ld32_reloc_targval_get 650 #define ld_reloc_targval_set ld32_reloc_targval_set 651 #define ld_sec_validate ld32_sec_validate 652 #define ld_sort_ordered ld32_sort_ordered 653 #define ld_sort_seg_list ld32_sort_seg_list 654 #define ld_sunw_ldmach ld32_sunw_ldmach 655 #define ld_sunwmove_preprocess ld32_sunwmove_preprocess 656 #define ld_sup_atexit ld32_sup_atexit 657 #define ld_sup_open ld32_sup_open 658 #define ld_sup_file ld32_sup_file 659 #define ld_sup_loadso ld32_sup_loadso 660 #define ld_sup_input_done ld32_sup_input_done 661 #define ld_sup_input_section ld32_sup_input_section 662 #define ld_sup_section ld32_sup_section 663 #define ld_sup_start ld32_sup_start 664 #define ld_swap_reloc_data ld32_swap_reloc_data 665 #define ld_sym_add_u ld32_sym_add_u 666 #define ld_sym_adjust_vis ld32_sym_adjust_vis 667 #define ld_sym_avl_comp ld32_sym_avl_comp 668 #define ld_sym_copy ld32_sym_copy 669 #define ld_sym_enter ld32_sym_enter 670 #define ld_sym_find ld32_sym_find 671 #define ld_sym_nodirect ld32_sym_nodirect 672 #define ld_sym_process ld32_sym_process 673 #define ld_sym_resolve ld32_sym_resolve 674 #define ld_sym_spec ld32_sym_spec 675 #define ld_targ ld32_targ 676 #define ld_targ_init_sparc ld32_targ_init_sparc 677 #define ld_targ_init_x86 ld32_targ_init_x86 678 #define ld_vers_base ld32_vers_base 679 #define ld_vers_check_defs ld32_vers_check_defs 680 #define ld_vers_check_need ld32_vers_check_need 681 #define ld_vers_def_process ld32_vers_def_process 682 #define ld_vers_desc ld32_vers_desc 683 #define ld_vers_find ld32_vers_find 684 #define ld_vers_need_process ld32_vers_need_process 685 #define ld_vers_promote ld32_vers_promote 686 #define ld_vers_sym_process ld32_vers_sym_process 687 #define ld_vers_verify ld32_vers_verify 688 689 #endif 690 691 extern uintptr_t dbg_setup(const char *, Dbg_desc *, const char **, int); 692 693 extern uintptr_t ld_add_actrel(Word, Rel_desc *, Ofl_desc *); 694 extern uintptr_t ld_add_libdir(Ofl_desc *, const char *); 695 extern void ld_adj_movereloc(Ofl_desc *, Rel_desc *); 696 extern Sym_desc * ld_am_I_partial(Rel_desc *, Xword); 697 extern int ld_append_isp(Ofl_desc *, Os_desc *, Is_desc *, int); 698 extern void ld_ar_member(Ar_desc *, Elf_Arsym *, Ar_aux *, 699 Ar_mem *); 700 extern Ar_desc *ld_ar_setup(const char *, Elf *, Ofl_desc *); 701 extern uintptr_t ld_assign_got_TLS(Boolean, Rel_desc *, Ofl_desc *, 702 Sym_desc *, Gotndx *, Gotref, Word, Word, 703 Word, Word); 704 705 extern Word ld_bswap_Word(Word); 706 extern Xword ld_bswap_Xword(Xword); 707 708 extern void ld_disp_errmsg(const char *, Rel_desc *, Ofl_desc *); 709 710 extern void ld_ent_check(Ofl_desc *); 711 extern int ld_exit(Ofl_desc *); 712 713 extern uintptr_t ld_find_library(const char *, Ofl_desc *); 714 extern uintptr_t ld_finish_libs(Ofl_desc *); 715 716 extern const char *ld_section_reld_name(Sym_desc *, Is_desc *); 717 718 extern Group_desc *ld_get_group(Ofl_desc *, Is_desc *); 719 extern uintptr_t ld_group_process(Is_desc *, Ofl_desc *); 720 721 extern uintptr_t ld_lib_setup(Ofl_desc *); 722 723 extern void ld_init(Ofl_desc *); 724 725 extern Xword ld_lcm(Xword, Xword); 726 727 extern uintptr_t ld_make_bss(Ofl_desc *, Xword, Xword, Bss_Type); 728 extern Is_desc *ld_make_data(Ofl_desc *, size_t); 729 extern uintptr_t ld_make_got(Ofl_desc *); 730 extern uintptr_t ld_make_parexpn_data(Ofl_desc *, size_t, Xword); 731 extern uintptr_t ld_make_sunwmove(Ofl_desc *, int); 732 extern Is_desc *ld_make_text(Ofl_desc *, size_t); 733 extern void ld_map_out(Ofl_desc *); 734 extern uintptr_t ld_map_parse(const char *, Ofl_desc *); 735 736 extern uintptr_t ld_open_outfile(Ofl_desc *); 737 738 extern Os_desc *ld_place_section(Ofl_desc *, Is_desc *, int, Word); 739 extern uintptr_t ld_process_archive(const char *, int, Ar_desc *, 740 Ofl_desc *); 741 extern uintptr_t ld_process_files(Ofl_desc *, int, char **); 742 extern uintptr_t ld_process_flags(Ofl_desc *, int, char **); 743 extern Ifl_desc *ld_process_ifl(const char *, const char *, int, Elf *, 744 Word, Ofl_desc *, Rej_desc *); 745 extern Ifl_desc *ld_process_open(const char *, const char *, int *, 746 Ofl_desc *, Word, Rej_desc *); 747 extern uintptr_t ld_process_ordered(Ifl_desc *, Ofl_desc *, Word, Word); 748 extern uintptr_t ld_process_sym_reloc(Ofl_desc *, Rel_desc *, Rel *, 749 Is_desc *, const char *); 750 751 extern void ld_recalc_shdrcnt(Ofl_desc *); 752 753 extern uintptr_t ld_reloc_GOT_relative(Boolean, Rel_desc *, Ofl_desc *); 754 extern uintptr_t ld_reloc_plt(Rel_desc *, Ofl_desc *); 755 extern void ld_reloc_remain_entry(Rel_desc *, Os_desc *, 756 Ofl_desc *); 757 extern int ld_reloc_targval_get(Ofl_desc *, Rel_desc *, 758 uchar_t *, Xword *); 759 extern int ld_reloc_targval_set(Ofl_desc *, Rel_desc *, 760 uchar_t *, Xword); 761 762 extern void ld_sec_validate(Ofl_desc *); 763 extern uintptr_t ld_sort_ordered(Ofl_desc *); 764 extern uintptr_t ld_sort_seg_list(Ofl_desc *); 765 extern Half ld_sunw_ldmach(); 766 extern uintptr_t ld_sunwmove_preprocess(Ofl_desc *); 767 extern void ld_sup_atexit(Ofl_desc *, int); 768 extern void ld_sup_open(Ofl_desc *, const char **, const char **, 769 int *, int, Elf **, Elf *ref, size_t, 770 const Elf_Kind); 771 extern void ld_sup_file(Ofl_desc *, const char *, const Elf_Kind, 772 int flags, Elf *); 773 extern uintptr_t ld_sup_loadso(Ofl_desc *, const char *); 774 extern void ld_sup_input_done(Ofl_desc *); 775 extern void ld_sup_section(Ofl_desc *, const char *, Shdr *, Word, 776 Elf_Data *, Elf *); 777 extern uintptr_t ld_sup_input_section(Ofl_desc*, Ifl_desc *, 778 const char *, Shdr **, Word, Elf_Scn *, Elf *); 779 extern void ld_sup_start(Ofl_desc *, const Half, const char *); 780 extern int ld_swap_reloc_data(Ofl_desc *, Rel_desc *); 781 extern Sym_desc *ld_sym_add_u(const char *, Ofl_desc *, Msg); 782 extern void ld_sym_adjust_vis(Sym_desc *, Ofl_desc *); 783 extern int ld_sym_avl_comp(const void *, const void *); 784 extern uintptr_t ld_sym_copy(Sym_desc *); 785 extern Sym_desc *ld_sym_enter(const char *, Sym *, Word, Ifl_desc *, 786 Ofl_desc *, Word, Word, Word, Half, avl_index_t *); 787 extern Sym_desc *ld_sym_find(const char *, Word, avl_index_t *, 788 Ofl_desc *); 789 extern uintptr_t ld_sym_nodirect(Is_desc *, Ifl_desc *, Ofl_desc *); 790 extern uintptr_t ld_sym_process(Is_desc *, Ifl_desc *, Ofl_desc *); 791 extern uintptr_t ld_sym_resolve(Sym_desc *, Sym *, Ifl_desc *, 792 Ofl_desc *, int, Word, Word); 793 extern uintptr_t ld_sym_spec(Ofl_desc *); 794 795 extern Target ld_targ; 796 extern const Target *ld_targ_init_sparc(void); 797 extern const Target *ld_targ_init_x86(void); 798 799 extern Ver_desc *ld_vers_base(Ofl_desc *); 800 extern uintptr_t ld_vers_check_defs(Ofl_desc *); 801 extern uintptr_t ld_vers_check_need(Ofl_desc *); 802 extern uintptr_t ld_vers_def_process(Is_desc *, Ifl_desc *, Ofl_desc *); 803 extern Ver_desc *ld_vers_desc(const char *, Word, List *); 804 extern Ver_desc *ld_vers_find(const char *, Word, List *); 805 extern uintptr_t ld_vers_need_process(Is_desc *, Ifl_desc *, Ofl_desc *); 806 extern void ld_vers_promote(Sym_desc *, Word, Ifl_desc *, 807 Ofl_desc *); 808 extern int ld_vers_sym_process(Lm_list *, Is_desc *, Ifl_desc *); 809 extern int ld_vers_verify(Ofl_desc *); 810 811 extern uintptr_t add_regsym(Sym_desc *, Ofl_desc *); 812 extern Word hashbkts(Word); 813 extern Xword lcm(Xword, Xword); 814 extern Listnode *list_where(List *, Word); 815 816 /* 817 * Most platforms have both a 32 and 64-bit variant (e.g. EM_SPARC and 818 * EM_SPARCV9). To support this, there many files in libld that are built 819 * twice, once for ELFCLASS64 (_ELF64), and once for ELFCLASS32. In these 820 * files, we sometimes want to supply one value for the ELFCLASS32 case 821 * and another for ELFCLASS64. The LD_TARG_BYCLASS macro is used to do 822 * this. It is called with both both alternatives, and yields the one 823 * that applies to the current compilation environment. 824 */ 825 #ifdef _ELF64 826 #define LD_TARG_BYCLASS(_ec32, _ec64) (_ec64) 827 #else 828 #define LD_TARG_BYCLASS(_ec32, _ec64) (_ec32) 829 #endif 830 831 832 #ifdef __cplusplus 833 } 834 #endif 835 836 #endif /* _LIBLD_DOT_H */ 837