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 /* Section type of .eh_frame/.eh_frame_hdr sections */ 102 Word m_sht_unwind; 103 104 Word m_dt_register; 105 } Target_mach; 106 107 108 /* 109 * Section identifiers, used to order sections in output object 110 */ 111 typedef struct { 112 Word id_array; 113 Word id_bss; 114 Word id_cap; 115 Word id_data; 116 Word id_dynamic; 117 Word id_dynsort; 118 Word id_dynstr; 119 Word id_dynsym; 120 Word id_dynsym_ndx; 121 Word id_got; 122 Word id_gotdata; 123 Word id_hash; 124 Word id_interp; 125 Word id_lbss; 126 Word id_ldynsym; 127 Word id_note; 128 Word id_null; 129 Word id_plt; 130 Word id_rel; 131 Word id_strtab; 132 Word id_syminfo; 133 Word id_symtab; 134 Word id_symtab_ndx; 135 Word id_text; 136 Word id_tls; 137 Word id_tlsbss; 138 Word id_unknown; 139 Word id_unwind; 140 Word id_unwindhdr; 141 Word id_user; 142 Word id_version; 143 } Target_machid; 144 145 /* 146 * Target_nullfunc supplies machine code for generating a 147 * 148 * void (*)(void) 149 * 150 * unnamed function. Such a function can be called, and returns 151 * immediately without doing any work. This is used to back FUNC 152 * symbol definitions added with a mapfile. 153 * 154 * The machine instructions are specified as an array of bytes rather 155 * than a larger integer type in order to avoid byte order issues that 156 * can otherwise occur in cross linking. 157 */ 158 typedef struct { 159 const uchar_t *nf_template; /* Array of machine inst. bytes */ 160 size_t nf_size; /* # bytes in nf_template */ 161 } Target_nullfunc; 162 163 /* 164 * Target_machrel holds pointers to the reloc_table and machrel functions 165 * for a given target machine. 166 * 167 * The following function pointers are allowed to be NULL, if the 168 * underlying target does not require the specified operation. All 169 * other functions must be supplied: 170 * 171 * mr_assign_got 172 * mr_reloc_register 173 * mr_reloc_GOTOP 174 * mr_allocate_got 175 */ 176 typedef struct { 177 const Rel_entry *mr_reloc_table; 178 179 Word (* mr_init_rel)(Rel_desc *, void *); 180 void (* mr_mach_eflags)(Ehdr *, Ofl_desc *); 181 void (* mr_mach_make_dynamic)(Ofl_desc *, size_t *); 182 void (* mr_mach_update_odynamic)(Ofl_desc *, Dyn **); 183 Xword (* mr_calc_plt_addr)(Sym_desc *, Ofl_desc *); 184 uintptr_t (* mr_perform_outreloc)(Rel_desc *, Ofl_desc *); 185 uintptr_t (* mr_do_activerelocs)(Ofl_desc *); 186 uintptr_t (* mr_add_outrel)(Word, Rel_desc *, Ofl_desc *); 187 uintptr_t (* mr_reloc_register)(Rel_desc *, Is_desc *, 188 Ofl_desc *); 189 uintptr_t (* mr_reloc_local)(Rel_desc *, Ofl_desc *); 190 uintptr_t (* mr_reloc_GOTOP)(Boolean, Rel_desc *, Ofl_desc *); 191 uintptr_t (* mr_reloc_TLS)(Boolean, Rel_desc *, Ofl_desc *); 192 uintptr_t (* mr_assign_got)(Ofl_desc *, Sym_desc *); 193 194 Gotndx *(* mr_find_got_ndx)(Alist *, Gotref, Ofl_desc *, 195 Rel_desc *); 196 Xword (* mr_calc_got_offset)(Rel_desc *, Ofl_desc *); 197 uintptr_t (* mr_assign_got_ndx)(Alist **, Gotndx *, Gotref, 198 Ofl_desc *, Rel_desc *, Sym_desc *); 199 void (* mr_assign_plt_ndx)(Sym_desc *, Ofl_desc *); 200 uintptr_t (* mr_allocate_got)(Ofl_desc *); 201 uintptr_t (* mr_fillin_gotplt)(Ofl_desc *); 202 } Target_machrel; 203 204 205 /* 206 * Target_machsym holds pointers to the machsym functions 207 * for a given target machine. 208 * 209 * These fields are allowed to be NULL for targets that do not require 210 * special handling of register symbols. Register symbols are used by 211 * sparc targets. If any of these fields are non-NULL, all of them are 212 * required to be present (use empty stub routines if necessary). 213 */ 214 typedef struct { 215 int (* ms_reg_check)(Sym_desc *, Sym *, const char *, 216 Ifl_desc *, Ofl_desc *); 217 int (* ms_mach_sym_typecheck)(Sym_desc *, Sym *, 218 Ifl_desc *, Ofl_desc *); 219 const char *(* ms_is_regsym)(Ofl_desc *, Ifl_desc *, Sym *, 220 const char *, int, Word, const char *, Word *); 221 Sym_desc *(* ms_reg_find)(Sym * sym, Ofl_desc * ofl); 222 int (* ms_reg_enter)(Sym_desc *, Ofl_desc *); 223 } Target_machsym; 224 225 typedef struct { 226 Target_mach t_m; 227 Target_machid t_id; 228 Target_nullfunc t_nf; 229 Target_machrel t_mr; 230 Target_machsym t_ms; 231 } Target; 232 233 /* 234 * Structure to manage the update of weak symbols from their associated alias. 235 */ 236 typedef struct wk_desc { 237 Sym *wk_symtab; /* the .symtab entry */ 238 Sym *wk_dynsym; /* the .dynsym entry */ 239 Sym_desc *wk_weak; /* the original weak symbol */ 240 Sym_desc *wk_alias; /* the real symbol */ 241 } Wk_desc; 242 243 /* 244 * Structure to manage the support library interfaces. 245 */ 246 typedef struct func_list { 247 const char *fl_obj; /* name of support object */ 248 /* function is from */ 249 void (*fl_fptr)(); /* function pointer */ 250 uint_t fl_version; /* ld_version() level */ 251 } Func_list; 252 253 typedef struct support_list { 254 const char *sup_name; /* ld_support function name */ 255 Alist *sup_funcs; /* list of support functions */ 256 } Support_list; 257 258 /* 259 * Structure to manage a sorted output relocation list. 260 * 261 * rl_key1 -> pointer to needed ndx 262 * rl_key2 -> pointer to symbol relocation is against 263 * rl_key3 -> virtual offset of relocation 264 */ 265 typedef struct reloc_list { 266 Sym_desc *rl_key2; 267 Xword rl_key3; 268 Rel_desc *rl_rsp; 269 Half rl_key1; 270 } Reloc_list; 271 272 273 typedef struct sym_s_list { 274 Word sl_hval; 275 Sym_desc *sl_sdp; 276 } Sym_s_list; 277 278 /* 279 * ld heap management structure 280 */ 281 typedef struct _ld_heap Ld_heap; 282 struct _ld_heap { 283 Ld_heap *lh_next; 284 void *lh_free; 285 void *lh_end; 286 }; 287 288 #define HEAPBLOCK 0x800000 /* default allocation block size */ 289 #define HEAPALIGN 0x8 /* heap blocks alignment requirement */ 290 291 /* 292 * Dynamic per-symbol filtee string table descriptor. This associates filtee 293 * strings that will be created in the .dynstr, with .dynamic entries. 294 */ 295 typedef struct { 296 char *dft_str; /* dynstr string */ 297 Word dft_flag; /* auxiliary/filtee type */ 298 Half dft_ndx; /* eventual ndx into .dynamic */ 299 } Dfltr_desc; 300 301 /* 302 * Per-symbol filtee descriptor. This associates symbol definitions with 303 * their filtees. 304 */ 305 typedef struct { 306 Sym_desc *sft_sdp; /* symbol descriptor */ 307 Aliste sft_idx; /* index into dtstr descriptor */ 308 } Sfltr_desc; 309 310 /* 311 * Define Alist initialization sizes. 312 */ 313 #define AL_CNT_IFL_GROUPS 20 /* ifl_groups */ 314 #define AL_CNT_IFL_RELSECS 6 /* ifl_relsect */ 315 316 #define AL_CNT_OFL_DTSFLTRS 4 /* ofl_dtsfltrs */ 317 #define AL_CNT_OFL_SYMFLTRS 20 /* ofl_symfltrs */ 318 #define AL_CNT_OFL_MAPSECS 10 /* ofl_map{text|data} */ 319 #define AL_CNT_OFL_OBJS 50 /* ofl_objs */ 320 #define AL_CNT_OFL_LIBS 10 /* ofl_sos */ 321 #define AL_CNT_OFL_LIBDIRS 10 /* ofl_[ud]libdirs */ 322 #define AL_CNT_OFL_MAPFILES 6 /* ofl_maps */ 323 #define AL_CNT_OFL_ENTRANCE 10 /* ofl_ents */ 324 #define AL_CNT_OFL_RELS 4 /* ofl_outrels */ 325 #define AL_CNT_OFL_COPYRELS 10 /* ofl_copyrels */ 326 #define AL_CNT_OFL_ARRAYS 10 /* ofl_{init|fini|prei}array */ 327 #define AL_CNT_OFL_OSGROUPS 10 /* ofl_osgroups */ 328 #define AL_CNT_OFL_OSTLSSEG 4 /* ofl_ostlsseg */ 329 #define AL_CNT_OFL_ORDERED 4 /* ofl_ordered */ 330 #define AL_CNT_OFL_SYMINFOSYMS 50 /* ofl_syminfsyms */ 331 #define AL_CNT_OFL_MOVE 10 /* ofl_ismove */ 332 #define AL_CNT_OFL_UNWIND 1 /* ofl_unwind */ 333 #define AL_CNT_OFL_PARSYMS 10 /* ofl_parsyms */ 334 335 #define AL_CNT_OS_MSTRISDESCS 10 /* os_mstrisdescs */ 336 #define AL_CNT_OS_RELISDESCS 100 /* os_relisdescs */ 337 #define AL_CNT_OS_COMDATS 20 /* os_comdats */ 338 #define AL_CNT_OS_ISDESCS_BA 4 /* os_isdesc: BEFORE|AFTER */ 339 #define AL_CNT_OS_ISDESCS 60 /* os_isdesc: ORDERED|DEFAULT */ 340 341 #define AL_CNT_SG_OSDESC 40 /* sg_osdescs */ 342 #define AL_CNT_SG_SECORDER 40 /* sg_secorder */ 343 344 #define AL_CNT_SDP_GOT 1 /* sd_GOTndxs */ 345 #define AL_CNT_SDP_MOVE 1 /* sd_move */ 346 #define AL_CNT_SDP_DFILES 1 /* sa_dfiles */ 347 348 #define AL_CNT_SDF_VERSIONS 2 /* sdf_{vers|verneed} */ 349 350 #define AL_CNT_EC_FILES 1 /* ec_files */ 351 352 #define AL_CNT_VERDESCS 20 /* version desc */ 353 #define AL_CNT_WEAK 20 /* weak desc */ 354 #define AL_CNT_SUPPORT 2 /* support libraries */ 355 #define AL_CNT_STRMRGREL 500 /* ld_make_strmerge() reloc alist cnt */ 356 #define AL_CNT_STRMRGSYM 20 /* ld_make_strmerge() sym alist cnt */ 357 #define AL_CNT_SEGMENTS 20 /* ofl_segs */ 358 359 /* 360 * Return codes for {tls|got}_fixups() routines 361 */ 362 typedef enum { 363 FIX_ERROR, /* fatal error - time to punt */ 364 FIX_DONE, /* relocation done - no further processing required */ 365 FIX_RELOC /* do_reloc() relocation processing required */ 366 } Fixupret; 367 368 #ifndef FILENAME_MAX 369 #define FILENAME_MAX BUFSIZ /* maximum length of a path name */ 370 #endif 371 372 /* 373 * We pad the end of the .dynstr section with a block of DYNSTR_EXTRA_PAD 374 * bytes, and we insert DYNAMIC_EXTRA_ELTS unused items into the 375 * .dynamic section (with value DT_NULL). This provides the resources needed 376 * to add and/or alter string items in the .dynamic section, such as runpath. 377 */ 378 #define DYNSTR_EXTRA_PAD 512 379 #define DYNAMIC_EXTRA_ELTS 10 380 381 /* 382 * Relocation buckets are sized based on the number of input relocations and 383 * the following constants. 384 */ 385 #define REL_HAIDESCNO 1000 /* high water mark active buckets */ 386 #define REL_LAIDESCNO 50 /* low water mark active buckets */ 387 #define REL_HOIDESCNO 500 /* high water mark output buckets */ 388 #define REL_LOIDESCNO 10 /* low water mark output buckets */ 389 390 /* 391 * Given a symbol of a type that is allowed within a .SUNW_dynsymsort or 392 * .SUNW_dyntlssort section, examine the symbol attributes to determine 393 * if this particular symbol should be included or not. 394 * 395 * entry: 396 * The symbol must have an allowed type: Either a type verified by 397 * dynsymsort_symtype[] or STT_TLS. 398 * 399 * _sdp - Pointer to symbol descriptor 400 * _sym - Pointer to symbol referenced by _sdp. 401 * 402 * _sym is derivable from _sdp: _sdp->sd_sym 403 * However, most callers assign it to a local variable for efficiency, 404 * and this macro allows such a variable to be used within. If you 405 * don't have such a variable, supply _sdp->sd_sym. 406 * 407 * The tests used require some explanation: 408 * 409 * (_sdp->sd_flags & FLG_SY_DYNSORT) 410 * Some special symbols are kept even if they don't meet the 411 * usual requirements. These symbols have the FLG_SY_DYNSORT 412 * bit set. If this bit isn't set then we look at the other 413 * attributes. 414 * 415 * (((_sdp->sd_ref != REF_DYN_NEED) && 416 * (_sdp->sd_sym->st_shndx != SHN_UNDEF)) 417 * || (_sdp->sd_flags & FLG_SY_MVTOCOMM)) 418 * We do not want to include symbols that are not defined within 419 * the object we are creating. REF_DYN_NEED corresponds to those 420 * UNDEF items. However, if the symbol is the target of a copy 421 * relocation, then it effectively becomes defined within the 422 * object after all. FLG_SY_MVTOCOMM indicates a copy relocation, 423 * and prevents us from culling those exceptions. 424 * 425 * (_sym->st_size != 0) 426 * Symbols with 0 length are labels injected by the compilers 427 * or the linker for purposes of code generation, and do 428 * not directly correspond to actual code. In fact, most of the 429 * symbols we mark with FLG_SY_DYNSORT need that flag set because 430 * they have size 0. This size test filters out the others. 431 * 432 * !(_sdp->sd_flags & FLG_SY_NODYNSORT) 433 * Some symbols are not kept, even though they do meet the usual 434 * requirements. These symbols have FLG_SY_NODYNSORT set. 435 * For example, if there are weak and non-weak versions of a given 436 * symbol, we only want to keep one of them. So, we set 437 * FLG_SY_NODYNSORT on the one we don't want. 438 */ 439 #define DYNSORT_TEST_ATTR(_sdp, _sym) \ 440 ((_sdp->sd_flags & FLG_SY_DYNSORT) || \ 441 ((((_sdp->sd_ref != REF_DYN_NEED) && \ 442 (_sdp->sd_sym->st_shndx != SHN_UNDEF)) || \ 443 (_sdp->sd_flags & FLG_SY_MVTOCOMM)) && \ 444 (_sym->st_size != 0) && \ 445 !(_sdp->sd_flags & FLG_SY_NODYNSORT))) 446 447 /* 448 * We use output section descriptor counters to add up the number of 449 * symbol indexes to put in the .SUNW_dynsort and .SUNW_dyntlssort sections. 450 * Non-TLS symbols are counted by ofl->ofl_dynsymsortcnt, while TLS symbols are 451 * counted by ofl->ofl_dyntlssortcnt. This computation is done inline in 452 * several places. The DYNSORT_COUNT macro allows us to generate this from 453 * a single description. 454 * 455 * entry: 456 * _sdp, _sym - As per DYNSORT_TEST_ATTR 457 * _type - Type of symbol (STT_*) 458 * _inc_or_dec_op - Either ++, or --. This specifies the operation 459 * to be applied to the counter, and determines whether we 460 * are adding, or removing, a symbol from .SUNW_dynsymsort. 461 * 462 * Note that _type is derivable from _sym: ELF_ST_TYPE(_sdp->sd_sym->st_info). 463 * Most callers already have it in a variable, so this allows us to use that 464 * variable. If you don't have such a variable, use ELF_ST_TYPE() as shown. 465 */ 466 #define DYNSORT_COUNT(_sdp, _sym, _type, _inc_or_dec_op) \ 467 { \ 468 Word *_cnt_var; \ 469 \ 470 if (dynsymsort_symtype[_type]) { /* Non-TLS counter */ \ 471 _cnt_var = &ofl->ofl_dynsymsortcnt; \ 472 } else if ((_type) == STT_TLS) { /* TLS counter */ \ 473 _cnt_var = &ofl->ofl_dyntlssortcnt; \ 474 } else { /* Don't count this symbol */ \ 475 _cnt_var = NULL; \ 476 } \ 477 if ((_cnt_var != NULL) && DYNSORT_TEST_ATTR(_sdp, _sym)) \ 478 (*_cnt_var)_inc_or_dec_op; /* Increment/Decrement */ \ 479 } 480 481 /* 482 * The OFL_SWAP_RELOC macros are used to determine whether 483 * relocation processing needs to swap the data being relocated. 484 * It is an optimization to ld_swap_reloc_data(), as it avoids 485 * the function call in the case where the linker host and the 486 * target have the same byte order. 487 */ 488 #define OFL_SWAP_RELOC_DATA(_ofl, _rel) \ 489 (((_ofl)->ofl_flags1 & FLG_OF1_ENCDIFF) && \ 490 ld_swap_reloc_data(_ofl, _rel)) 491 492 /* 493 * Define an AVL node for maintaining input section descriptors. AVL trees of 494 * these descriptors are used to process group and COMDAT section. 495 */ 496 typedef struct { 497 avl_node_t isd_avl; /* avl book-keeping (see SGSOFFSETOF) */ 498 Is_desc *isd_isp; /* input section descriptor */ 499 uint_t isd_hash; /* input section name hash value */ 500 } Isd_node; 501 502 /* 503 * Local data items. 504 */ 505 extern char *Plibpath; 506 extern char *Llibdir; 507 extern char *Ulibdir; 508 extern Ld_heap *ld_heap; 509 extern APlist *lib_support; 510 extern int demangle_flag; 511 extern const Msg reject[]; 512 extern int Verbose; 513 extern const int ldynsym_symtype[]; 514 extern const int dynsymsort_symtype[]; 515 516 /* 517 * Local functions. 518 */ 519 extern char *add_string(char *, char *); 520 extern const char *demangle(const char *); 521 522 extern void lds_atexit(Ofl_desc *, int); 523 524 extern void libld_free(void *); 525 extern void *libld_malloc(size_t); 526 extern void *libld_realloc(void *, size_t); 527 528 extern int isdavl_compare(const void *, const void *); 529 530 extern Sdf_desc *sdf_add(const char *, APlist **); 531 extern Sdf_desc *sdf_find(const char *, APlist *); 532 533 #if defined(_ELF64) 534 535 #define ld_add_actrel ld64_add_actrel 536 #define ld_add_libdir ld64_add_libdir 537 #define ld_add_rel_cache ld64_add_rel_cache 538 #define ld_adj_movereloc ld64_adj_movereloc 539 #define ld_am_I_partial ld64_am_I_partial 540 #define ld_ar_member ld64_ar_member 541 #define ld_ar_setup ld64_ar_setup 542 #define ld_assign_got_TLS ld64_assign_got_TLS 543 #define ld_bswap_Word ld64_bswap_Word 544 #define ld_bswap_Xword ld64_bswap_Xword 545 #define ld_disp_errmsg ld64_disp_errmsg 546 #define ld_ent_check ld64_ent_check 547 #define ld_exit ld64_exit 548 #define ld_find_library ld64_find_library 549 #define ld_finish_libs ld64_finish_libs 550 #define ld_get_group ld64_get_group 551 #define ld_group_process ld64_group_process 552 #define ld_lib_setup ld64_lib_setup 553 #define ld_init_sighandler ld64_init_sighandler 554 #define ld_lcm ld64_lcm 555 #define ld_make_bss ld64_make_bss 556 #define ld_make_data ld64_make_data 557 #define ld_make_got ld64_make_got 558 #define ld_make_parexpn_data ld64_make_parexpn_data 559 #define ld_make_sunwmove ld64_make_sunmove 560 #define ld_make_text ld64_make_text 561 #define ld_map_out ld64_map_out 562 #define ld_map_parse ld64_map_parse 563 #define ld_open_outfile ld64_open_outfile 564 #define ld_os_first_isdesc ld64_os_first_isdesc 565 #define ld_place_section ld64_place_section 566 #define ld_process_archive ld64_process_archive 567 #define ld_process_files ld64_process_files 568 #define ld_process_flags ld64_process_flags 569 #define ld_process_ifl ld64_process_ifl 570 #define ld_process_move ld64_process_move 571 #define ld_process_open ld64_process_open 572 #define ld_process_ordered ld64_process_ordered 573 #define ld_process_sym_reloc ld64_process_sym_reloc 574 #define ld_reloc_GOT_relative ld64_reloc_GOT_relative 575 #define ld_reloc_plt ld64_reloc_plt 576 #define ld_reloc_remain_entry ld64_reloc_remain_entry 577 #define ld_reloc_targval_get ld64_reloc_targval_get 578 #define ld_reloc_targval_set ld64_reloc_targval_set 579 #define ld_sec_validate ld64_sec_validate 580 #define ld_sort_ordered ld64_sort_ordered 581 #define ld_sort_seg_list ld64_sort_seg_list 582 #define ld_stt_section_sym_name ld64_stt_section_sym_name 583 #define ld_sunw_ldmach ld64_sunw_ldmach 584 #define ld_sup_atexit ld64_sup_atexit 585 #define ld_sup_open ld64_sup_open 586 #define ld_sup_file ld64_sup_file 587 #define ld_sup_loadso ld64_sup_loadso 588 #define ld_sup_input_done ld64_sup_input_done 589 #define ld_sup_input_section ld64_sup_input_section 590 #define ld_sup_section ld64_sup_section 591 #define ld_sup_start ld64_sup_start 592 #define ld_swap_reloc_data ld64_swap_reloc_data 593 #define ld_sym_add_u ld64_sym_add_u 594 #define ld_sym_adjust_vis ld64_sym_adjust_vis 595 #define ld_sym_avl_comp ld64_sym_avl_comp 596 #define ld_sym_copy ld64_sym_copy 597 #define ld_sym_enter ld64_sym_enter 598 #define ld_sym_find ld64_sym_find 599 #define ld_sym_nodirect ld64_sym_nodirect 600 #define ld_sym_process ld64_sym_process 601 #define ld_sym_resolve ld64_sym_resolve 602 #define ld_sym_spec ld64_sym_spec 603 #define ld_targ ld64_targ 604 #define ld_targ_init_sparc ld64_targ_init_sparc 605 #define ld_targ_init_x86 ld64_targ_init_x86 606 #define ld_unwind_make_hdr ld64_unwind_make_hdr 607 #define ld_unwind_populate_hdr ld64_unwind_populate_hdr 608 #define ld_unwind_register ld64_unwind_register 609 #define ld_vers_base ld64_vers_base 610 #define ld_vers_check_defs ld64_vers_check_defs 611 #define ld_vers_check_need ld64_vers_check_need 612 #define ld_vers_def_process ld64_vers_def_process 613 #define ld_vers_desc ld64_vers_desc 614 #define ld_vers_find ld64_vers_find 615 #define ld_vers_need_process ld64_vers_need_process 616 #define ld_vers_promote ld64_vers_promote 617 #define ld_vers_sym_process ld64_vers_sym_process 618 #define ld_vers_verify ld64_vers_verify 619 620 #else 621 622 #define ld_add_actrel ld32_add_actrel 623 #define ld_add_libdir ld32_add_libdir 624 #define ld_add_rel_cache ld32_add_rel_cache 625 #define ld_adj_movereloc ld32_adj_movereloc 626 #define ld_am_I_partial ld32_am_I_partial 627 #define ld_ar_member ld32_ar_member 628 #define ld_ar_setup ld32_ar_setup 629 #define ld_assign_got_TLS ld32_assign_got_TLS 630 #define ld_bswap_Word ld32_bswap_Word 631 #define ld_bswap_Xword ld32_bswap_Xword 632 #define ld_disp_errmsg ld32_disp_errmsg 633 #define ld_ent_check ld32_ent_check 634 #define ld_exit ld32_exit 635 #define ld_find_library ld32_find_library 636 #define ld_finish_libs ld32_finish_libs 637 #define ld_get_group ld32_get_group 638 #define ld_group_process ld32_group_process 639 #define ld_lib_setup ld32_lib_setup 640 #define ld_init_sighandler ld32_init_sighandler 641 #define ld_lcm ld32_lcm 642 #define ld_make_bss ld32_make_bss 643 #define ld_make_data ld32_make_data 644 #define ld_make_got ld32_make_got 645 #define ld_make_parexpn_data ld32_make_parexpn_data 646 #define ld_make_sunwmove ld32_make_sunmove 647 #define ld_make_text ld32_make_text 648 #define ld_map_out ld32_map_out 649 #define ld_map_parse ld32_map_parse 650 #define ld_open_outfile ld32_open_outfile 651 #define ld_os_first_isdesc ld32_os_first_isdesc 652 #define ld_place_section ld32_place_section 653 #define ld_process_archive ld32_process_archive 654 #define ld_process_files ld32_process_files 655 #define ld_process_flags ld32_process_flags 656 #define ld_process_ifl ld32_process_ifl 657 #define ld_process_move ld32_process_move 658 #define ld_process_open ld32_process_open 659 #define ld_process_ordered ld32_process_ordered 660 #define ld_process_sym_reloc ld32_process_sym_reloc 661 #define ld_reloc_GOT_relative ld32_reloc_GOT_relative 662 #define ld_reloc_plt ld32_reloc_plt 663 #define ld_reloc_remain_entry ld32_reloc_remain_entry 664 #define ld_reloc_targval_get ld32_reloc_targval_get 665 #define ld_reloc_targval_set ld32_reloc_targval_set 666 #define ld_sec_validate ld32_sec_validate 667 #define ld_sort_ordered ld32_sort_ordered 668 #define ld_sort_seg_list ld32_sort_seg_list 669 #define ld_stt_section_sym_name ld32_stt_section_sym_name 670 #define ld_sunw_ldmach ld32_sunw_ldmach 671 #define ld_sup_atexit ld32_sup_atexit 672 #define ld_sup_open ld32_sup_open 673 #define ld_sup_file ld32_sup_file 674 #define ld_sup_loadso ld32_sup_loadso 675 #define ld_sup_input_done ld32_sup_input_done 676 #define ld_sup_input_section ld32_sup_input_section 677 #define ld_sup_section ld32_sup_section 678 #define ld_sup_start ld32_sup_start 679 #define ld_swap_reloc_data ld32_swap_reloc_data 680 #define ld_sym_add_u ld32_sym_add_u 681 #define ld_sym_adjust_vis ld32_sym_adjust_vis 682 #define ld_sym_avl_comp ld32_sym_avl_comp 683 #define ld_sym_copy ld32_sym_copy 684 #define ld_sym_enter ld32_sym_enter 685 #define ld_sym_find ld32_sym_find 686 #define ld_sym_nodirect ld32_sym_nodirect 687 #define ld_sym_process ld32_sym_process 688 #define ld_sym_resolve ld32_sym_resolve 689 #define ld_sym_spec ld32_sym_spec 690 #define ld_targ ld32_targ 691 #define ld_targ_init_sparc ld32_targ_init_sparc 692 #define ld_targ_init_x86 ld32_targ_init_x86 693 #define ld_unwind_make_hdr ld32_unwind_make_hdr 694 #define ld_unwind_populate_hdr ld32_unwind_populate_hdr 695 #define ld_unwind_register ld32_unwind_register 696 #define ld_vers_base ld32_vers_base 697 #define ld_vers_check_defs ld32_vers_check_defs 698 #define ld_vers_check_need ld32_vers_check_need 699 #define ld_vers_def_process ld32_vers_def_process 700 #define ld_vers_desc ld32_vers_desc 701 #define ld_vers_find ld32_vers_find 702 #define ld_vers_need_process ld32_vers_need_process 703 #define ld_vers_promote ld32_vers_promote 704 #define ld_vers_sym_process ld32_vers_sym_process 705 #define ld_vers_verify ld32_vers_verify 706 707 #endif 708 709 extern void dbg_cleanup(void); 710 extern int dbg_setup(Ofl_desc *, const char *, int); 711 712 extern uintptr_t ld_add_actrel(Word, Rel_desc *, Ofl_desc *); 713 extern uintptr_t ld_add_libdir(Ofl_desc *, const char *); 714 extern Rel_cache *ld_add_rel_cache(Ofl_desc *, APlist **, size_t *, 715 size_t, size_t); 716 extern void ld_adj_movereloc(Ofl_desc *, Rel_desc *); 717 extern Sym_desc * ld_am_I_partial(Rel_desc *, Xword); 718 extern void ld_ar_member(Ar_desc *, Elf_Arsym *, Ar_aux *, 719 Ar_mem *); 720 extern Ar_desc *ld_ar_setup(const char *, Elf *, Ofl_desc *); 721 extern uintptr_t ld_assign_got_TLS(Boolean, Rel_desc *, Ofl_desc *, 722 Sym_desc *, Gotndx *, Gotref, Word, Word, 723 Word, Word); 724 725 extern Word ld_bswap_Word(Word); 726 extern Xword ld_bswap_Xword(Xword); 727 728 extern void ld_disp_errmsg(const char *, Rel_desc *, Ofl_desc *); 729 730 extern void ld_ent_check(Ofl_desc *); 731 extern int ld_exit(Ofl_desc *); 732 733 extern uintptr_t ld_find_library(const char *, Ofl_desc *); 734 extern uintptr_t ld_finish_libs(Ofl_desc *); 735 736 extern const char *ld_stt_section_sym_name(Is_desc *); 737 738 extern Group_desc *ld_get_group(Ofl_desc *, Is_desc *); 739 extern uintptr_t ld_group_process(Is_desc *, Ofl_desc *); 740 741 extern uintptr_t ld_lib_setup(Ofl_desc *); 742 743 extern void ld_init_sighandler(Ofl_desc *); 744 745 extern Xword ld_lcm(Xword, Xword); 746 747 extern uintptr_t ld_make_bss(Ofl_desc *, Xword, Xword, uint_t); 748 extern Is_desc *ld_make_data(Ofl_desc *, size_t); 749 extern uintptr_t ld_make_got(Ofl_desc *); 750 extern uintptr_t ld_make_parexpn_data(Ofl_desc *, size_t, Xword); 751 extern uintptr_t ld_make_sunwmove(Ofl_desc *, int); 752 extern Is_desc *ld_make_text(Ofl_desc *, size_t); 753 extern void ld_map_out(Ofl_desc *); 754 extern uintptr_t ld_map_parse(const char *, Ofl_desc *); 755 756 extern uintptr_t ld_open_outfile(Ofl_desc *); 757 758 extern Is_desc *ld_os_first_isdesc(Os_desc *); 759 extern Os_desc *ld_place_section(Ofl_desc *, Is_desc *, int, 760 const char *); 761 extern uintptr_t ld_process_archive(const char *, int, Ar_desc *, 762 Ofl_desc *); 763 extern uintptr_t ld_process_files(Ofl_desc *, int, char **); 764 extern uintptr_t ld_process_flags(Ofl_desc *, int, char **); 765 extern Ifl_desc *ld_process_ifl(const char *, const char *, int, Elf *, 766 Word, Ofl_desc *, Rej_desc *); 767 extern uintptr_t ld_process_move(Ofl_desc *); 768 extern Ifl_desc *ld_process_open(const char *, const char *, int *, 769 Ofl_desc *, Word, Rej_desc *); 770 extern uintptr_t ld_process_ordered(Ifl_desc *, Ofl_desc *, Word); 771 extern uintptr_t ld_process_sym_reloc(Ofl_desc *, Rel_desc *, Rel *, 772 Is_desc *, const char *, Word); 773 774 extern uintptr_t ld_reloc_GOT_relative(Boolean, Rel_desc *, Ofl_desc *); 775 extern uintptr_t ld_reloc_plt(Rel_desc *, Ofl_desc *); 776 extern void ld_reloc_remain_entry(Rel_desc *, Os_desc *, 777 Ofl_desc *); 778 extern int ld_reloc_targval_get(Ofl_desc *, Rel_desc *, 779 uchar_t *, Xword *); 780 extern int ld_reloc_targval_set(Ofl_desc *, Rel_desc *, 781 uchar_t *, Xword); 782 783 extern void ld_sec_validate(Ofl_desc *); 784 extern uintptr_t ld_sort_ordered(Ofl_desc *); 785 extern uintptr_t ld_sort_seg_list(Ofl_desc *); 786 extern Half ld_sunw_ldmach(); 787 extern void ld_sup_atexit(Ofl_desc *, int); 788 extern void ld_sup_open(Ofl_desc *, const char **, const char **, 789 int *, int, Elf **, Elf *ref, size_t, 790 const Elf_Kind); 791 extern void ld_sup_file(Ofl_desc *, const char *, const Elf_Kind, 792 int flags, Elf *); 793 extern uintptr_t ld_sup_loadso(Ofl_desc *, const char *); 794 extern void ld_sup_input_done(Ofl_desc *); 795 extern void ld_sup_section(Ofl_desc *, const char *, Shdr *, Word, 796 Elf_Data *, Elf *); 797 extern uintptr_t ld_sup_input_section(Ofl_desc*, Ifl_desc *, 798 const char *, Shdr **, Word, Elf_Scn *, Elf *); 799 extern void ld_sup_start(Ofl_desc *, const Half, const char *); 800 extern int ld_swap_reloc_data(Ofl_desc *, Rel_desc *); 801 extern Sym_desc *ld_sym_add_u(const char *, Ofl_desc *, Msg); 802 extern void ld_sym_adjust_vis(Sym_desc *, Ofl_desc *); 803 extern int ld_sym_avl_comp(const void *, const void *); 804 extern uintptr_t ld_sym_copy(Sym_desc *); 805 extern Sym_desc *ld_sym_enter(const char *, Sym *, Word, Ifl_desc *, 806 Ofl_desc *, Word, Word, Word, Half, avl_index_t *); 807 extern Sym_desc *ld_sym_find(const char *, Word, avl_index_t *, 808 Ofl_desc *); 809 extern uintptr_t ld_sym_nodirect(Is_desc *, Ifl_desc *, Ofl_desc *); 810 extern uintptr_t ld_sym_process(Is_desc *, Ifl_desc *, Ofl_desc *); 811 extern uintptr_t ld_sym_resolve(Sym_desc *, Sym *, Ifl_desc *, 812 Ofl_desc *, int, Word, Word); 813 extern uintptr_t ld_sym_spec(Ofl_desc *); 814 815 extern Target ld_targ; 816 extern const Target *ld_targ_init_sparc(void); 817 extern const Target *ld_targ_init_x86(void); 818 819 extern uintptr_t ld_unwind_make_hdr(Ofl_desc *); 820 extern uintptr_t ld_unwind_populate_hdr(Ofl_desc *); 821 extern uintptr_t ld_unwind_register(Os_desc *, Ofl_desc *); 822 823 extern Ver_desc *ld_vers_base(Ofl_desc *); 824 extern uintptr_t ld_vers_check_defs(Ofl_desc *); 825 extern uintptr_t ld_vers_check_need(Ofl_desc *); 826 extern uintptr_t ld_vers_def_process(Is_desc *, Ifl_desc *, Ofl_desc *); 827 extern Ver_desc *ld_vers_desc(const char *, Word, APlist **); 828 extern Ver_desc *ld_vers_find(const char *, Word, APlist *); 829 extern uintptr_t ld_vers_need_process(Is_desc *, Ifl_desc *, Ofl_desc *); 830 extern void ld_vers_promote(Sym_desc *, Word, Ifl_desc *, 831 Ofl_desc *); 832 extern int ld_vers_sym_process(Lm_list *, Is_desc *, Ifl_desc *); 833 extern int ld_vers_verify(Ofl_desc *); 834 835 extern uintptr_t add_regsym(Sym_desc *, Ofl_desc *); 836 extern Word hashbkts(Word); 837 extern Xword lcm(Xword, Xword); 838 839 /* 840 * Most platforms have both a 32 and 64-bit variant (e.g. EM_SPARC and 841 * EM_SPARCV9). To support this, there many files in libld that are built 842 * twice, once for ELFCLASS64 (_ELF64), and once for ELFCLASS32. In these 843 * files, we sometimes want to supply one value for the ELFCLASS32 case 844 * and another for ELFCLASS64. The LD_TARG_BYCLASS macro is used to do 845 * this. It is called with both both alternatives, and yields the one 846 * that applies to the current compilation environment. 847 */ 848 #ifdef _ELF64 849 #define LD_TARG_BYCLASS(_ec32, _ec64) (_ec64) 850 #else 851 #define LD_TARG_BYCLASS(_ec32, _ec64) (_ec32) 852 #endif 853 854 855 #ifdef __cplusplus 856 } 857 #endif 858 859 #endif /* _LIBLD_DOT_H */ 860