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 2010 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 #ifndef _LIBLD_H 31 #define _LIBLD_H 32 33 #include <stdlib.h> 34 #include <libelf.h> 35 #include <sgs.h> 36 #include <_machelf.h> 37 #include <string_table.h> 38 #include <sys/avl.h> 39 #include <alist.h> 40 #include <elfcap.h> 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 /* 47 * Default directory search path manipulation for the link-editor. YLDIR 48 * indicates which directory in LIBPATH is replaced by the -YL option to cc 49 * and ld. YUDIR indicates which directory is replaced by -YU. 50 */ 51 #define YLDIR 1 52 #define YUDIR 2 53 54 /* 55 * Define a hash value that can never be returned from elf_hash(). 56 */ 57 #define SYM_NOHASH (~(Word)0) 58 59 /* 60 * Macro that can be used to represent both ORDER flags 61 * in a section header. 62 */ 63 #define ALL_SHF_ORDER (SHF_ORDERED | SHF_LINK_ORDER) 64 65 /* 66 * The linker merges (concatenates) sections with the same name and 67 * compatible section header flags. When comparing these flags, 68 * there are some that should not be included in the decision. 69 * The ALL_SHF_IGNORE constant defines these flags. 70 * 71 * NOTE: SHF_MERGE|SHF_STRINGS: 72 * The compiler is allowed to set the SHF_MERGE|SHF_STRINGS flags in 73 * order to tell the linker that: 74 * 75 * 1) There is nothing in the section except null terminated strings. 76 * 2) Those strings do not contain NULL bytes, except as termination. 77 * 3) All references to these strings occur via standard relocation 78 * records. 79 * 80 * As a result, if two compatible sections both have these flags set, it is 81 * OK to combine the strings they contain into a single merged string table 82 * with duplicates removed and tail strings merged. 83 * 84 * This is a different meaning than the simple concatenating of sections 85 * that the linker always does. It is a hint that an additional optimization 86 * is possible, but not required. This means that sections that do not 87 * share the same SHF_MERGE|SHF_STRINGS values can be concatenated, 88 * but cannot have their duplicate strings combined. Hence, the 89 * SHF_MERGE|SHF_STRINGS flags should be ignored when deciding whether 90 * two sections can be concatenated. 91 */ 92 #define ALL_SHF_IGNORE (ALL_SHF_ORDER | SHF_GROUP | SHF_MERGE | SHF_STRINGS) 93 94 /* 95 * Define symbol reference types for use in symbol resolution. 96 */ 97 typedef enum { 98 REF_DYN_SEEN, /* a .so symbol has been seen */ 99 REF_DYN_NEED, /* a .so symbol satisfies a .o symbol */ 100 REF_REL_NEED, /* a .o symbol */ 101 REF_NUM /* the number of symbol references */ 102 } Symref; 103 104 /* 105 * GOT reference models 106 */ 107 typedef enum { 108 GOT_REF_GENERIC, /* generic symbol reference */ 109 GOT_REF_TLSIE, /* TLS initial exec (gnu) reference */ 110 GOT_REF_TLSLD, /* TLS local dynamic reference */ 111 GOT_REF_TLSGD /* TLS general dynamic reference */ 112 } Gotref; 113 114 typedef struct { 115 Xword gn_addend; /* addend associated with GOT entry */ 116 Sword gn_gotndx; /* GOT table index */ 117 Gotref gn_gotref; 118 } Gotndx; 119 120 /* 121 * Got debugging structure. The got index is defined as a signed value as we 122 * do so much mucking around with negative and positive gots on SPARC, and sign 123 * extension is necessary when building 64-bit objects. On intel we explicitly 124 * cast this variable to an unsigned value. 125 */ 126 typedef struct { 127 Sym_desc *gt_sym; 128 Gotndx gt_gndx; 129 } Gottable; 130 131 /* 132 * The link-editor caches the results of sloppy relocation processing 133 * in a variable of type Rlxrel_cache. Symbols come for processing in sorted 134 * order, so a single item cache suffices to eliminate duplicate lookups. 135 * 136 * When sloppy relocation processing fails, the Rlxrel_rej enum reports 137 * the underlying reason. 138 */ 139 typedef enum { 140 RLXREL_REJ_NONE = 0, /* Replacement symbol was found */ 141 RLXREL_REJ_TARGET, /* Target sec disallows relaxed relocations */ 142 RLXREL_REJ_SECTION, /* Either there is no replacement section, */ 143 /* or its attributes are incompatible */ 144 RLXREL_REJ_SYMBOL, /* Replacement symbol not found */ 145 } Rlxrel_rej; 146 147 typedef struct sreloc_cache { 148 Sym_desc *sr_osdp; /* Original symbol */ 149 Sym_desc *sr_rsdp; /* Replacement symbol */ 150 Rlxrel_rej sr_rej; /* Reason for failure if NULL sr_rsdp */ 151 } Rlxrel_cache; 152 153 /* 154 * Nodes in an ofl_wrap AVL tree 155 * 156 * wsn_name is the name of the symbol to be wrapped. wsn_wrapname is used 157 * when we need to refer to the wrap symbol, and consists of the symbol 158 * name with a __wrap_ prefix. 159 */ 160 typedef struct wrap_sym_node { 161 avl_node_t wsn_avlnode; /* AVL book-keeping */ 162 const char *wsn_name; /* Symbol name: XXX */ 163 const char *wsn_wrapname; /* Wrap symbol name: __wrap_XXX */ 164 } WrapSymNode; 165 166 /* 167 * Capabilities structures, used to maintain a capabilities set. 168 * 169 * Capabilities can be defined within input relocatable objects, and can be 170 * augmented or replaced by mapfile directives. In addition, mapfile directives 171 * can be used to exclude capabilities that would otherwise be carried over to 172 * the output object. 173 * 174 * CA_SUNW_HW_1, CA_SUNW_SF_1 and CA_SUNW_HW_2 values are bitmasks. A current 175 * value, and an exclude value are maintained for each capability. 176 * 177 * There can be multiple CA_SUNW_PLAT and CA_SUNW_MACH entries and thus Alists 178 * are used to collect these entries. A current list for each capability is 179 * maintained as Capstr entries, which provide for maintaining the strings 180 * eventual index into a string table. An exclude list is maintained as a 181 * list of string pointers. 182 */ 183 typedef struct { 184 elfcap_mask_t cm_val; /* bitmask value */ 185 elfcap_mask_t cm_exc; /* bits to exclude from final object */ 186 } Capmask; 187 188 typedef struct { 189 Alist *cl_val; /* string (Capstr) value */ 190 APlist *cl_exc; /* strings to exclude from final */ 191 } Caplist; /* object */ 192 193 typedef struct { 194 char *cs_str; /* platform or machine name */ 195 Word cs_ndx; /* the entries output Cap index */ 196 } Capstr; 197 198 typedef uint_t oc_flag_t; 199 typedef struct { 200 Capmask oc_hw_1; /* CA_SUNW_HW_1 capabilities */ 201 Capmask oc_sf_1; /* CA_SUNW_SF_1 capabilities */ 202 Capmask oc_hw_2; /* CA_SUNW_HW_2 capabilities */ 203 Caplist oc_plat; /* CA_SUNW_PLAT capabilities */ 204 Caplist oc_mach; /* CA_SUNW_MACH capabilities */ 205 Capstr oc_id; /* CA_SUNW_ID capability */ 206 oc_flag_t oc_flags; 207 } Objcapset; 208 209 #define FLG_OCS_USRDEFID 0x1 /* user defined CA_SUNW_ID */ 210 211 /* 212 * Bitmasks for a single capability. Capabilities come from input objects, 213 * augmented or replaced by mapfile directives. In addition, mapfile directives 214 * can be used to exclude bits that would otherwise be set in the output object. 215 */ 216 typedef struct { 217 elfcap_mask_t cm_value; /* Bitmask value */ 218 elfcap_mask_t cm_exclude; /* Bits to remove from final object */ 219 } CapMask; 220 221 /* 222 * Combine the bitmask in a CapMask with the exclusion mask and 223 * return the resulting final value. 224 */ 225 #define CAPMASK_VALUE(_cbmp) ((_cbmp)->cm_value & ~(_cbmp)->cm_exclude) 226 227 typedef struct { 228 CapMask c_hw_1; /* CA_SUNW_HW_1 capabilities */ 229 CapMask c_sf_1; /* CA_SUNW_SF_1 capabilities */ 230 CapMask c_hw_2; /* CA_SUNW_HW_2 capabilities */ 231 } Outcapset; 232 233 234 /* 235 * Output file processing structure 236 */ 237 typedef Lword ofl_flag_t; 238 struct ofl_desc { 239 char *ofl_sgsid; /* link-editor identification */ 240 const char *ofl_name; /* full file name */ 241 Elf *ofl_elf; /* elf_memory() elf descriptor */ 242 Elf *ofl_welf; /* ELF_C_WRITE elf descriptor */ 243 Ehdr *ofl_dehdr; /* default elf header, and new elf */ 244 Ehdr *ofl_nehdr; /* header describing this file */ 245 Phdr *ofl_phdr; /* program header descriptor */ 246 Phdr *ofl_tlsphdr; /* TLS phdr */ 247 int ofl_fd; /* file descriptor */ 248 size_t ofl_size; /* image size */ 249 APlist *ofl_maps; /* list of input mapfiles */ 250 APlist *ofl_segs; /* list of segments */ 251 APlist *ofl_segs_order; /* SEGMENT_ORDER segments */ 252 avl_tree_t ofl_segs_avl; /* O(log N) access to named segments */ 253 APlist *ofl_ents; /* list of entrance descriptors */ 254 avl_tree_t ofl_ents_avl; /* O(log N) access to named ent. desc */ 255 APlist *ofl_objs; /* relocatable object file list */ 256 Word ofl_objscnt; /* and count */ 257 APlist *ofl_ars; /* archive library list */ 258 Word ofl_arscnt; /* and count */ 259 int ofl_ars_gsandx; /* archive group argv index. 0 means */ 260 /* no current group, < 0 means */ 261 /* error reported. >0 is cur ndx */ 262 Word ofl_ars_gsndx; /* current -zrescan-start ofl_ars ndx */ 263 APlist *ofl_sos; /* shared object list */ 264 Word ofl_soscnt; /* and count */ 265 APlist *ofl_soneed; /* list of implicitly required .so's */ 266 APlist *ofl_socntl; /* list of .so control definitions */ 267 APlist *ofl_outrels; /* list of output relocations */ 268 Word ofl_outrelscnt; /* and count */ 269 APlist *ofl_actrels; /* list of relocations to perform */ 270 Word ofl_actrelscnt; /* and count */ 271 Word ofl_entrelscnt; /* no of relocations entered */ 272 Alist *ofl_copyrels; /* list of copy relocations */ 273 APlist *ofl_ordered; /* list of shf_ordered sections */ 274 APlist *ofl_symdtent; /* list of syminfo symbols that need */ 275 /* to reference .dynamic entries */ 276 APlist *ofl_ismove; /* list of .SUNW_move sections */ 277 APlist *ofl_ismoverel; /* list of relocation input section */ 278 /* targeting to expanded area */ 279 APlist *ofl_parsyms; /* list of partially initialized */ 280 /* symbols (ie. move symbols) */ 281 APlist *ofl_extrarels; /* relocation sections which have */ 282 /* a NULL sh_info */ 283 avl_tree_t *ofl_groups; /* pointer to head of Groups AVL tree */ 284 APlist *ofl_initarray; /* list of init array func names */ 285 APlist *ofl_finiarray; /* list of fini array func names */ 286 APlist *ofl_preiarray; /* list of preinit array func names */ 287 APlist *ofl_rtldinfo; /* list of rtldinfo syms */ 288 APlist *ofl_osgroups; /* list of output GROUP sections */ 289 APlist *ofl_ostlsseg; /* pointer to sections in TLS segment */ 290 APlist *ofl_unwind; /* list of unwind output sections */ 291 Os_desc *ofl_unwindhdr; /* Unwind hdr */ 292 avl_tree_t ofl_symavl; /* pointer to head of Syms AVL tree */ 293 Sym_desc **ofl_regsyms; /* array of potential register */ 294 Word ofl_regsymsno; /* symbols and array count */ 295 Word ofl_regsymcnt; /* no. of output register symbols */ 296 Word ofl_lregsymcnt; /* no. of local register symbols */ 297 Sym_desc *ofl_dtracesym; /* ld -zdtrace= */ 298 ofl_flag_t ofl_flags; /* various state bits, args etc. */ 299 ofl_flag_t ofl_flags1; /* more flags */ 300 void *ofl_entry; /* entry point (-e and Sym_desc *) */ 301 char *ofl_filtees; /* shared objects we are a filter for */ 302 const char *ofl_soname; /* (-h option) output file name for */ 303 /* dynamic structure */ 304 const char *ofl_interp; /* interpreter name used by exec() */ 305 char *ofl_rpath; /* run path to store in .dynamic */ 306 char *ofl_config; /* config path to store in .dynamic */ 307 APlist *ofl_ulibdirs; /* user supplied library search list */ 308 APlist *ofl_dlibdirs; /* default library search list */ 309 Word ofl_vercnt; /* number of versions to generate */ 310 APlist *ofl_verdesc; /* list of version descriptors */ 311 size_t ofl_verdefsz; /* size of version definition section */ 312 size_t ofl_verneedsz; /* size of version needed section */ 313 Word ofl_entercnt; /* no. of global symbols entered */ 314 Word ofl_globcnt; /* no. of global symbols to output */ 315 Word ofl_scopecnt; /* no. of scoped symbols to output */ 316 Word ofl_dynscopecnt; /* no. scoped syms in .SUNW_ldynsym */ 317 Word ofl_elimcnt; /* no. of eliminated symbols */ 318 Word ofl_locscnt; /* no. of local symbols in .symtab */ 319 Word ofl_dynlocscnt; /* no. local symbols in .SUNW_ldynsym */ 320 Word ofl_dynsymsortcnt; /* no. ndx in .SUNW_dynsymsort */ 321 Word ofl_dyntlssortcnt; /* no. ndx in .SUNW_dyntlssort */ 322 Word ofl_dynshdrcnt; /* no. of output section in .dynsym */ 323 Word ofl_shdrcnt; /* no. of output sections */ 324 Word ofl_caploclcnt; /* no. of local capabilities symbols */ 325 Word ofl_capsymcnt; /* no. of symbol capabilities entries */ 326 /* required */ 327 Word ofl_capchaincnt; /* no. of Capchain symbols */ 328 APlist *ofl_capgroups; /* list of capabilities groups */ 329 avl_tree_t *ofl_capfamilies; /* capability family AVL tree */ 330 Str_tbl *ofl_shdrsttab; /* Str_tbl for shdr strtab */ 331 Str_tbl *ofl_strtab; /* Str_tbl for symtab strtab */ 332 Str_tbl *ofl_dynstrtab; /* Str_tbl for dymsym strtab */ 333 Gotndx *ofl_tlsldgotndx; /* index to LD TLS_index structure */ 334 Xword ofl_relocsz; /* size of output relocations */ 335 Xword ofl_relocgotsz; /* size of .got relocations */ 336 Xword ofl_relocpltsz; /* size of .plt relocations */ 337 Xword ofl_relocbsssz; /* size of .bss (copy) relocations */ 338 Xword ofl_relocrelsz; /* size of .rel[a] relocations */ 339 Word ofl_relocincnt; /* no. of input relocations */ 340 Word ofl_reloccnt; /* tot number of output relocations */ 341 Word ofl_reloccntsub; /* tot numb of output relocations to */ 342 /* skip (-zignore) */ 343 Word ofl_relocrelcnt; /* tot number of relative */ 344 /* relocations */ 345 Word ofl_gotcnt; /* no. of .got entries */ 346 Word ofl_pltcnt; /* no. of .plt entries */ 347 Word ofl_pltpad; /* no. of .plt padd entries */ 348 Word ofl_hashbkts; /* no. of hash buckets required */ 349 Is_desc *ofl_isbss; /* .bss input section (globals) */ 350 Is_desc *ofl_islbss; /* .lbss input section (globals) */ 351 Is_desc *ofl_istlsbss; /* .tlsbss input section (globals) */ 352 Is_desc *ofl_isparexpn; /* -z nopartial .data input section */ 353 Os_desc *ofl_osdynamic; /* .dynamic output section */ 354 Os_desc *ofl_osdynsym; /* .dynsym output section */ 355 Os_desc *ofl_osldynsym; /* .SUNW_ldynsym output section */ 356 Os_desc *ofl_osdynstr; /* .dynstr output section */ 357 Os_desc *ofl_osdynsymsort; /* .SUNW_dynsymsort output section */ 358 Os_desc *ofl_osdyntlssort; /* .SUNW_dyntlssort output section */ 359 Os_desc *ofl_osgot; /* .got output section */ 360 Os_desc *ofl_oshash; /* .hash output section */ 361 Os_desc *ofl_osinitarray; /* .initarray output section */ 362 Os_desc *ofl_osfiniarray; /* .finiarray output section */ 363 Os_desc *ofl_ospreinitarray; /* .preinitarray output section */ 364 Os_desc *ofl_osinterp; /* .interp output section */ 365 Os_desc *ofl_oscap; /* .SUNW_cap output section */ 366 Os_desc *ofl_oscapinfo; /* .SUNW_capinfo output section */ 367 Os_desc *ofl_oscapchain; /* .SUNW_capchain output section */ 368 Os_desc *ofl_osplt; /* .plt output section */ 369 Os_desc *ofl_osmove; /* .SUNW_move output section */ 370 Os_desc *ofl_osrelhead; /* first relocation section */ 371 Os_desc *ofl_osrel; /* .rel[a] relocation section */ 372 Os_desc *ofl_osshstrtab; /* .shstrtab output section */ 373 Os_desc *ofl_osstrtab; /* .strtab output section */ 374 Os_desc *ofl_ossymtab; /* .symtab output section */ 375 Os_desc *ofl_ossymshndx; /* .symtab_shndx output section */ 376 Os_desc *ofl_osdynshndx; /* .dynsym_shndx output section */ 377 Os_desc *ofl_osldynshndx; /* .SUNW_ldynsym_shndx output sec */ 378 Os_desc *ofl_osverdef; /* .version definition output section */ 379 Os_desc *ofl_osverneed; /* .version needed output section */ 380 Os_desc *ofl_osversym; /* .version symbol ndx output section */ 381 Word ofl_dtflags_1; /* DT_FLAGS_1 entries */ 382 Word ofl_dtflags; /* DT_FLAGS entries */ 383 Os_desc *ofl_ossyminfo; /* .SUNW_syminfo output section */ 384 Half ofl_parexpnndx; /* -z nopartial section index */ 385 /* Ref. at perform_outreloc() in */ 386 /* libld/{mach}/machrel.c */ 387 Xword *ofl_checksum; /* DT_CHECKSUM value address */ 388 char *ofl_depaudit; /* dependency auditing required (-P) */ 389 char *ofl_audit; /* object auditing required (-p) */ 390 Alist *ofl_symfltrs; /* per-symbol filtees and their */ 391 Alist *ofl_dtsfltrs; /* associated .dynamic/.dynstrs */ 392 Objcapset ofl_ocapset; /* object capabilities */ 393 Lm_list *ofl_lml; /* runtime link-map list */ 394 Gottable *ofl_gottable; /* debugging got information */ 395 Rlxrel_cache ofl_sr_cache; /* Cache last result from */ 396 /* sloppy_comdat_reloc() */ 397 APlist *ofl_maptext; /* mapfile added text sections */ 398 APlist *ofl_mapdata; /* mapfile added data sections */ 399 avl_tree_t *ofl_wrap; /* -z wrap symbols */ 400 }; 401 402 #define FLG_OF_DYNAMIC 0x00000001 /* generate dynamic output module */ 403 #define FLG_OF_STATIC 0x00000002 /* generate static output module */ 404 #define FLG_OF_EXEC 0x00000004 /* generate an executable */ 405 #define FLG_OF_RELOBJ 0x00000008 /* generate a relocatable object */ 406 #define FLG_OF_SHAROBJ 0x00000010 /* generate a shared object */ 407 #define FLG_OF_BFLAG 0x00000020 /* do no special plt building: -b */ 408 #define FLG_OF_IGNENV 0x00000040 /* ignore LD_LIBRARY_PATH: -i */ 409 #define FLG_OF_STRIP 0x00000080 /* strip output: -s */ 410 #define FLG_OF_NOWARN 0x00000100 /* disable symbol warnings: -t */ 411 #define FLG_OF_NOUNDEF 0x00000200 /* allow no undefined symbols: -zdefs */ 412 #define FLG_OF_PURETXT 0x00000400 /* allow no text relocations: -ztext */ 413 #define FLG_OF_GENMAP 0x00000800 /* generate a memory map: -m */ 414 #define FLG_OF_DYNLIBS 0x00001000 /* dynamic input allowed: -Bdynamic */ 415 #define FLG_OF_SYMBOLIC 0x00002000 /* bind global symbols: -Bsymbolic */ 416 #define FLG_OF_ADDVERS 0x00004000 /* add version stamp: -Qy */ 417 #define FLG_OF_NOLDYNSYM 0x00008000 /* -znoldynsym set */ 418 #define FLG_OF_IS_ORDER 0x00010000 /* input section ordering within a */ 419 /* segment is required */ 420 #define FLG_OF_EC_FILES 0x00020000 /* Ent_desc exist w/non-NULL ec_files */ 421 #define FLG_OF_TEXTREL 0x00040000 /* text relocations have been found */ 422 #define FLG_OF_MULDEFS 0x00080000 /* multiple symbols are allowed */ 423 #define FLG_OF_TLSPHDR 0x00100000 /* a TLS program header is required */ 424 #define FLG_OF_BLDGOT 0x00200000 /* build GOT table */ 425 #define FLG_OF_VERDEF 0x00400000 /* record version definitions */ 426 #define FLG_OF_VERNEED 0x00800000 /* record version dependencies */ 427 #define FLG_OF_NOVERSEC 0x01000000 /* don't record version sections */ 428 #define FLG_OF_KEY 0x02000000 /* file requires sort keys */ 429 #define FLG_OF_PROCRED 0x04000000 /* process any symbol reductions by */ 430 /* effecting the symbol table */ 431 /* output and relocations */ 432 #define FLG_OF_SYMINFO 0x08000000 /* create a syminfo section */ 433 #define FLG_OF_AUX 0x10000000 /* ofl_filter is an auxiliary filter */ 434 #define FLG_OF_FATAL 0x20000000 /* fatal error during input */ 435 #define FLG_OF_WARN 0x40000000 /* warning during input processing. */ 436 #define FLG_OF_VERBOSE 0x80000000 /* -z verbose flag set */ 437 438 #define FLG_OF_MAPSYMB 0x000100000000 /* symbolic scope definition seen */ 439 #define FLG_OF_MAPGLOB 0x000200000000 /* global scope definition seen */ 440 #define FLG_OF_COMREL 0x000400000000 /* -z combreloc set, which enables */ 441 /* DT_RELACNT tracking, */ 442 #define FLG_OF_NOCOMREL 0x000800000000 /* -z nocombreloc set */ 443 #define FLG_OF_AUTOLCL 0x001000000000 /* automatically reduce unspecified */ 444 /* global symbols to locals */ 445 #define FLG_OF_AUTOELM 0x002000000000 /* automatically eliminate */ 446 /* unspecified global symbols */ 447 #define FLG_OF_REDLSYM 0x004000000000 /* reduce local symbols */ 448 #define FLG_OF_OS_ORDER 0x008000000000 /* output section ordering required */ 449 #define FLG_OF_OSABI 0x010000000000 /* tag object as ELFOSABI_SOLARIS */ 450 #define FLG_OF_ADJOSCNT 0x020000000000 /* adjust ofl_shdrcnt to accommodate */ 451 /* discarded sections */ 452 #define FLG_OF_OTOSCAP 0x040000000000 /* convert object capabilities to */ 453 /* symbol capabilities */ 454 #define FLG_OF_PTCAP 0x080000000000 /* PT_SUNWCAP required */ 455 #define FLG_OF_CAPSTRS 0x100000000000 /* capability strings are required */ 456 #define FLG_OF_EHFRAME 0x200000000000 /* output contains .eh_frame section */ 457 458 /* 459 * In the flags1 arena, establish any options that are applicable to archive 460 * extraction first, and associate a mask. These values are recorded with any 461 * archive descriptor so that they may be reset should the archive require a 462 * rescan to try and resolve undefined symbols. 463 */ 464 #define FLG_OF1_ALLEXRT 0x0000000001 /* extract all members from an */ 465 /* archive file */ 466 #define FLG_OF1_WEAKEXT 0x0000000002 /* allow archive extraction to */ 467 /* resolve weak references */ 468 #define MSK_OF1_ARCHIVE 0x0000000003 /* archive flags mask */ 469 470 #define FLG_OF1_NOINTRP 0x0000000008 /* -z nointerp flag set */ 471 #define FLG_OF1_ZDIRECT 0x0000000010 /* -z direct flag set */ 472 #define FLG_OF1_NDIRECT 0x0000000020 /* no-direct bindings specified */ 473 474 #define FLG_OF1_RELDYN 0x0000000100 /* process .dynamic in rel obj */ 475 #define FLG_OF1_NRLXREL 0x0000000200 /* -z norelaxreloc flag set */ 476 #define FLG_OF1_RLXREL 0x0000000400 /* -z relaxreloc flag set */ 477 #define FLG_OF1_IGNORE 0x0000000800 /* ignore unused dependencies */ 478 #define FLG_OF1_NOSGHND 0x0000001000 /* -z nosighandler flag set */ 479 #define FLG_OF1_TEXTOFF 0x0000002000 /* text relocations are ok */ 480 #define FLG_OF1_ABSEXEC 0x0000004000 /* -zabsexec set */ 481 #define FLG_OF1_LAZYLD 0x0000008000 /* lazy loading of objects enabled */ 482 #define FLG_OF1_GRPPRM 0x0000010000 /* dependencies are to have */ 483 /* GROUPPERM enabled */ 484 #define FLG_OF1_OVRFLW 0x0000020000 /* size exceeds 32-bit limitation */ 485 /* of 32-bit libld */ 486 #define FLG_OF1_NOPARTI 0x0000040000 /* -znopartial set */ 487 #define FLG_OF1_BSSOREL 0x0000080000 /* output relocation against bss */ 488 /* section */ 489 #define FLG_OF1_TLSOREL 0x0000100000 /* output relocation against .tlsbss */ 490 /* section */ 491 #define FLG_OF1_MEMORY 0x0000200000 /* produce a memory model */ 492 #define FLG_OF1_NGLBDIR 0x0000400000 /* no DT_1_DIRECT flag allowed */ 493 #define FLG_OF1_ENCDIFF 0x0000800000 /* host running linker has different */ 494 /* byte order than output object */ 495 #define FLG_OF1_VADDR 0x0001000000 /* a segment defines explicit vaddr */ 496 #define FLG_OF1_EXTRACT 0x0002000000 /* archive member has been extracted */ 497 #define FLG_OF1_RESCAN 0x0004000000 /* any archives should be rescanned */ 498 #define FLG_OF1_IGNPRC 0x0008000000 /* ignore processing required */ 499 #define FLG_OF1_NCSTTAB 0x0010000000 /* -znocompstrtab set */ 500 #define FLG_OF1_DONE 0x0020000000 /* link-editor processing complete */ 501 #define FLG_OF1_NONREG 0x0040000000 /* non-regular file specified as */ 502 /* the output file */ 503 #define FLG_OF1_ALNODIR 0x0080000000 /* establish NODIRECT for all */ 504 /* exported interfaces. */ 505 #define FLG_OF1_OVHWCAP1 0x0100000000 /* override CA_SUNW_HW_1 capabilities */ 506 #define FLG_OF1_OVSFCAP1 0x0200000000 /* override CA_SUNW_SF_1 capabilities */ 507 #define FLG_OF1_OVHWCAP2 0x0400000000 /* override CA_SUNW_HW_2 capabilities */ 508 #define FLG_OF1_OVMACHCAP 0x0800000000 /* override CA_SUNW_MACH capability */ 509 #define FLG_OF1_OVPLATCAP 0x1000000000 /* override CA_SUNW_PLAT capability */ 510 #define FLG_OF1_OVIDCAP 0x2000000000 /* override CA_SUNW_ID capability */ 511 512 /* 513 * Test to see if the output file would allow the presence of 514 * a .dynsym section. 515 */ 516 #define OFL_ALLOW_DYNSYM(_ofl) (((_ofl)->ofl_flags & \ 517 (FLG_OF_DYNAMIC | FLG_OF_RELOBJ)) == FLG_OF_DYNAMIC) 518 519 /* 520 * Test to see if the output file would allow the presence of 521 * a .SUNW_ldynsym section. The requirements are that a .dynsym 522 * is allowed, and -znoldynsym has not been specified. Note that 523 * even if the answer is True (1), we will only generate one if there 524 * are local symbols that require it. 525 */ 526 #define OFL_ALLOW_LDYNSYM(_ofl) (((_ofl)->ofl_flags & \ 527 (FLG_OF_DYNAMIC | FLG_OF_RELOBJ | FLG_OF_NOLDYNSYM)) == FLG_OF_DYNAMIC) 528 529 /* 530 * Test to see if relocation processing should be done. This is normally 531 * true, but can be disabled via the '-z noreloc' option. Note that 532 * relocatable objects are still relocated even if '-z noreloc' is present. 533 */ 534 #define OFL_DO_RELOC(_ofl) (((_ofl)->ofl_flags & FLG_OF_RELOBJ) || \ 535 !((_ofl)->ofl_dtflags_1 & DF_1_NORELOC)) 536 537 /* 538 * Determine whether a static executable is being built. 539 */ 540 #define OFL_IS_STATIC_EXEC(_ofl) (((_ofl)->ofl_flags & \ 541 (FLG_OF_STATIC | FLG_OF_EXEC)) == (FLG_OF_STATIC | FLG_OF_EXEC)) 542 543 /* 544 * Determine whether a static object is being built. This macro is used 545 * to select the appropriate string table, and symbol table that other 546 * sections need to reference. 547 */ 548 #define OFL_IS_STATIC_OBJ(_ofl) ((_ofl)->ofl_flags & \ 549 (FLG_OF_RELOBJ | FLG_OF_STATIC)) 550 551 /* 552 * Macros for counting symbol table entries. These are used to size symbol 553 * tables and associated sections (.syminfo, SUNW_capinfo, .hash, etc.) and 554 * set required sh_info entries (the offset to the first global symbol). 555 */ 556 #define SYMTAB_LOC_CNT(_ofl) /* local .symtab entries */ \ 557 (2 + /* NULL and STT_FILE */ \ 558 (_ofl)->ofl_shdrcnt + /* section symbol */ \ 559 (_ofl)->ofl_caploclcnt + /* local capabilities */ \ 560 (_ofl)->ofl_scopecnt + /* scoped symbols */ \ 561 (_ofl)->ofl_locscnt) /* standard locals */ 562 #define SYMTAB_ALL_CNT(_ofl) /* all .symtab entries */ \ 563 (SYMTAB_LOC_CNT(_ofl) + /* .symtab locals */ \ 564 (_ofl)->ofl_globcnt) /* standard globals */ 565 566 #define DYNSYM_LOC_CNT(_ofl) /* local .dynsym entries */ \ 567 (1 + /* NULL */ \ 568 (_ofl)->ofl_dynshdrcnt + /* section symbols */ \ 569 (_ofl)->ofl_caploclcnt + /* local capabilities */ \ 570 (_ofl)->ofl_lregsymcnt) /* local register symbols */ 571 #define DYNSYM_ALL_CNT(_ofl) /* all .dynsym entries */ \ 572 (DYNSYM_LOC_CNT(_ofl) + /* .dynsym locals */ \ 573 (_ofl)->ofl_globcnt) /* standard globals */ 574 575 /* 576 * Define a move descriptor used within relocation structures. 577 */ 578 typedef struct { 579 Move *mr_move; 580 Sym_desc *mr_sym; 581 } Mv_reloc; 582 583 /* 584 * Relocation (active & output) processing structure - transparent to common 585 * code. 586 * 587 * Note that rel_raddend is primarily only of interest to RELA relocations, 588 * and is set to 0 for REL. However, there is an exception: If FLG_REL_NADDEND 589 * is set, then rel_raddend contains a replacement value for the implicit 590 * addend found in the relocation target. 591 */ 592 struct rel_desc { 593 Os_desc *rel_osdesc; /* output section reloc is against */ 594 Is_desc *rel_isdesc; /* input section reloc is against */ 595 const char *rel_sname; /* symbol name (may be "unknown") */ 596 Sym_desc *rel_sym; /* sym relocation is against */ 597 Sym_desc *rel_usym; /* strong sym if this is a weak pair */ 598 Mv_reloc *rel_move; /* move table information */ 599 Word rel_flags; /* misc. flags for relocations */ 600 Word rel_rtype; /* relocation type */ 601 Xword rel_roffset; /* relocation offset */ 602 Sxword rel_raddend; /* addend from input relocation */ 603 Word rel_typedata; /* ELF_R_TYPE_DATA(info) */ 604 }; 605 606 /* 607 * common flags used on the Rel_desc structure (defined in machrel.h). 608 */ 609 #define FLG_REL_GOT 0x00000001 /* relocation against GOT */ 610 #define FLG_REL_PLT 0x00000002 /* relocation against PLT */ 611 #define FLG_REL_BSS 0x00000004 /* relocation against BSS */ 612 #define FLG_REL_LOAD 0x00000008 /* section loadable */ 613 #define FLG_REL_SCNNDX 0x00000010 /* use section index for symbol ndx */ 614 #define FLG_REL_CLVAL 0x00000020 /* clear VALUE for active relocation */ 615 #define FLG_REL_ADVAL 0x00000040 /* add VALUE for output relocation, */ 616 /* only relevant to SPARC and */ 617 /* R_SPARC_RELATIVE */ 618 #define FLG_REL_GOTCL 0x00000080 /* clear the GOT entry. This is */ 619 /* relevant to RELA relocations, */ 620 /* not REL (i386) relocations */ 621 #define FLG_REL_MOVETAB 0x00000100 /* Relocation against .SUNW_move */ 622 /* adjustments required before */ 623 /* actual relocation */ 624 #define FLG_REL_NOINFO 0x00000200 /* Relocation comes from a section */ 625 /* with a null sh_info field */ 626 #define FLG_REL_REG 0x00000400 /* Relocation target is reg sym */ 627 #define FLG_REL_FPTR 0x00000800 /* relocation against func. desc. */ 628 #define FLG_REL_RFPTR1 0x00001000 /* Relative relocation against */ 629 /* 1st part of FD */ 630 #define FLG_REL_RFPTR2 0x00002000 /* Relative relocation against */ 631 /* 2nd part of FD */ 632 #define FLG_REL_DISP 0x00004000 /* *disp* relocation */ 633 #define FLG_REL_STLS 0x00008000 /* IE TLS reference to */ 634 /* static TLS GOT index */ 635 #define FLG_REL_DTLS 0x00010000 /* GD TLS reference relative to */ 636 /* dynamic TLS GOT index */ 637 #define FLG_REL_MTLS 0x00020000 /* LD TLS reference against GOT */ 638 #define FLG_REL_STTLS 0x00040000 /* LE TLS reference directly */ 639 /* to static tls index */ 640 #define FLG_REL_TLSFIX 0x00080000 /* relocation points to TLS instr. */ 641 /* which needs updating */ 642 #define FLG_REL_RELA 0x00100000 /* descriptor captures a Rela */ 643 #define FLG_REL_GOTFIX 0x00200000 /* relocation points to GOTOP instr. */ 644 /* which needs updating */ 645 #define FLG_REL_NADDEND 0x00400000 /* Replace implicit addend in dest */ 646 /* with value in rel_raddend */ 647 /* Relevant to REL (i386) */ 648 /* relocations, not to RELA. */ 649 650 /* 651 * Structure to hold a cache of Relocations. 652 */ 653 struct rel_cache { 654 Rel_desc *rc_end; 655 Rel_desc *rc_free; 656 }; 657 658 /* 659 * Symbol value descriptor. For relocatable objects, each symbols value is 660 * its offset within its associated section. Therefore, to uniquely define 661 * each symbol within a reloctable object, record and sort the sh_offset and 662 * symbol value. This information is used to search for displacement 663 * relocations as part of copy relocation validation. 664 */ 665 typedef struct { 666 Addr ssv_value; 667 Sym_desc *ssv_sdp; 668 } Ssv_desc; 669 670 /* 671 * Input file processing structures. 672 */ 673 struct ifl_desc { /* input file descriptor */ 674 const char *ifl_name; /* full file name */ 675 const char *ifl_soname; /* shared object name */ 676 dev_t ifl_stdev; /* device id and inode number for .so */ 677 ino_t ifl_stino; /* multiple inclusion checks */ 678 Ehdr *ifl_ehdr; /* elf header describing this file */ 679 Elf *ifl_elf; /* elf descriptor for this file */ 680 Sym_desc **ifl_oldndx; /* original symbol table indices */ 681 Sym_desc *ifl_locs; /* symbol desc version of locals */ 682 Ssv_desc *ifl_sortsyms; /* sorted list of symbols by value */ 683 Word ifl_locscnt; /* no. of local symbols to process */ 684 Word ifl_symscnt; /* total no. of symbols to process */ 685 Word ifl_sortcnt; /* no. of sorted symbols to process */ 686 Word ifl_shnum; /* number of sections in file */ 687 Word ifl_shstrndx; /* index to .shstrtab */ 688 Word ifl_vercnt; /* number of versions in file */ 689 Half ifl_neededndx; /* index to NEEDED in .dyn section */ 690 Word ifl_flags; /* explicit/implicit reference */ 691 Is_desc **ifl_isdesc; /* isdesc[scn ndx] = Is_desc ptr */ 692 Sdf_desc *ifl_sdfdesc; /* control definition */ 693 Versym *ifl_versym; /* version symbol table array */ 694 Ver_index *ifl_verndx; /* verndx[ver ndx] = Ver_index */ 695 APlist *ifl_verdesc; /* version descriptor list */ 696 APlist *ifl_relsect; /* relocation section list */ 697 Alist *ifl_groups; /* SHT_GROUP section list */ 698 Cap_desc *ifl_caps; /* capabilities descriptor */ 699 }; 700 701 #define FLG_IF_CMDLINE 0x00000001 /* full filename specified from the */ 702 /* command line (no -l) */ 703 #define FLG_IF_NEEDED 0x00000002 /* shared object should be recorded */ 704 #define FLG_IF_DIRECT 0x00000004 /* establish direct bindings to this */ 705 /* object */ 706 #define FLG_IF_EXTRACT 0x00000008 /* file extracted from an archive */ 707 #define FLG_IF_VERNEED 0x00000010 /* version dependency information is */ 708 /* required */ 709 #define FLG_IF_DEPREQD 0x00000020 /* dependency is required to satisfy */ 710 /* symbol references */ 711 #define FLG_IF_NEEDSTR 0x00000040 /* dependency specified by -Nn */ 712 /* flag */ 713 #define FLG_IF_IGNORE 0x00000080 /* ignore unused dependencies */ 714 #define FLG_IF_NODIRECT 0x00000100 /* object contains symbols that */ 715 /* cannot be directly bound to */ 716 #define FLG_IF_LAZYLD 0x00000200 /* bindings to this object should be */ 717 /* lazy loaded */ 718 #define FLG_IF_GRPPRM 0x00000400 /* this dependency should have the */ 719 /* DF_P1_GROUPPERM flag set */ 720 #define FLG_IF_DISPPEND 0x00000800 /* displacement relocation done */ 721 /* in the ld time. */ 722 #define FLG_IF_DISPDONE 0x00001000 /* displacement relocation done */ 723 /* at the run time */ 724 #define FLG_IF_MAPFILE 0x00002000 /* file is a mapfile */ 725 #define FLG_IF_HSTRTAB 0x00004000 /* file has a string section */ 726 #define FLG_IF_FILEREF 0x00008000 /* file contains a section which */ 727 /* is included in the output */ 728 /* allocatable image */ 729 #define FLG_IF_GNUVER 0x00010000 /* file used GNU-style versioning */ 730 #define FLG_IF_ORDERED 0x00020000 /* ordered section processing */ 731 /* required */ 732 #define FLG_IF_OTOSCAP 0x00040000 /* convert object capabilities to */ 733 /* symbol capabilities */ 734 735 struct is_desc { /* input section descriptor */ 736 const char *is_name; /* original section name */ 737 Shdr *is_shdr; /* the elf section header */ 738 Ifl_desc *is_file; /* infile desc for this section */ 739 Os_desc *is_osdesc; /* new output section for this */ 740 /* input section */ 741 Elf_Data *is_indata; /* input sections raw data */ 742 Is_desc *is_symshndx; /* related SHT_SYM_SHNDX section */ 743 Is_desc *is_comdatkeep; /* If COMDAT section is discarded, */ 744 /* this is section that was kept */ 745 Word is_scnndx; /* original section index in file */ 746 Word is_ordndx; /* index for section. Used to decide */ 747 /* where to insert section when */ 748 /* reordering sections */ 749 Word is_keyident; /* key for SHF_{ORDERED|LINK_ORDER} */ 750 /* processing and ident used for */ 751 /* placing/ordering sections */ 752 Word is_flags; /* Various flags */ 753 }; 754 755 #define FLG_IS_ORDERED 0x0001 /* this is a SHF_ORDERED section */ 756 #define FLG_IS_KEY 0x0002 /* section requires sort keys */ 757 #define FLG_IS_DISCARD 0x0004 /* section is to be discarded */ 758 #define FLG_IS_RELUPD 0x0008 /* symbol defined here may have moved */ 759 #define FLG_IS_SECTREF 0x0010 /* section has been referenced */ 760 #define FLG_IS_GDATADEF 0x0020 /* section contains global data sym */ 761 #define FLG_IS_EXTERNAL 0x0040 /* isp from a user file */ 762 #define FLG_IS_INSTRMRG 0x0080 /* Usable SHF_MERGE|SHF_STRINGS sec */ 763 #define FLG_IS_GNSTRMRG 0x0100 /* Generated mergeable string section */ 764 #define FLG_IS_GROUPS 0x0200 /* section has groups to process */ 765 #define FLG_IS_PLACE 0x0400 /* section requires to be placed */ 766 #define FLG_IS_COMDAT 0x0800 /* section is COMDAT */ 767 #define FLG_IS_EHFRAME 0x1000 /* section is .eh_frame */ 768 769 /* 770 * Output sections contain lists of input sections that are assigned to them. 771 * These items fall into 4 categories: 772 * BEFORE - Ordered sections that specify SHN_BEFORE, in input order. 773 * ORDERED - Ordered sections that are sorted using unsorted sections 774 * as the sort key. 775 * DEFAULT - Sections that are placed into the output section 776 * in input order. 777 * AFTER - Ordered sections that specify SHN_AFTER, in input order. 778 */ 779 #define OS_ISD_BEFORE 0 780 #define OS_ISD_ORDERED 1 781 #define OS_ISD_DEFAULT 2 782 #define OS_ISD_AFTER 3 783 #define OS_ISD_NUM 4 784 typedef APlist *os_isdecs_arr[OS_ISD_NUM]; 785 786 /* 787 * Convenience macro for traversing every input section associated 788 * with a given output section. The primary benefit of this macro 789 * is that it preserves a precious level of code indentation in the 790 * code that uses it. 791 */ 792 #define OS_ISDESCS_TRAVERSE(_list_idx, _osp, _idx, _isp) \ 793 for (_list_idx = 0; _list_idx < OS_ISD_NUM; _list_idx++) \ 794 for (APLIST_TRAVERSE(_osp->os_isdescs[_list_idx], _idx, _isp)) 795 796 797 /* 798 * Map file and output file processing structures 799 */ 800 struct os_desc { /* Output section descriptor */ 801 const char *os_name; /* the section name */ 802 Elf_Scn *os_scn; /* the elf section descriptor */ 803 Shdr *os_shdr; /* the elf section header */ 804 Os_desc *os_relosdesc; /* the output relocation section */ 805 APlist *os_relisdescs; /* reloc input section descriptors */ 806 /* for this output section */ 807 os_isdecs_arr os_isdescs; /* lists of input sections in output */ 808 APlist *os_mstrisdescs; /* FLG_IS_INSTRMRG input sections */ 809 Sg_desc *os_sgdesc; /* segment os_desc is placed on */ 810 Elf_Data *os_outdata; /* output sections raw data */ 811 avl_tree_t *os_comdats; /* AVL tree of COMDAT input sections */ 812 /* associated to output section */ 813 Word os_identndx; /* section identifier for input */ 814 /* section processing, followed */ 815 /* by section symbol index */ 816 Word os_ordndx; /* index for section. Used to decide */ 817 /* where to insert section when */ 818 /* reordering sections */ 819 Xword os_szoutrels; /* size of output relocation section */ 820 uint_t os_namehash; /* hash on section name */ 821 uchar_t os_flags; /* various flags */ 822 }; 823 824 #define FLG_OS_KEY 0x01 /* section requires sort keys */ 825 #define FLG_OS_OUTREL 0x02 /* output rel against this section */ 826 #define FLG_OS_SECTREF 0x04 /* isps are not affected by -zignore */ 827 #define FLG_OS_EHFRAME 0x08 /* section is .eh_frame */ 828 829 /* 830 * The sg_id field of the segment descriptor is used to establish the default 831 * order for program headers and segments in the output object. Segments are 832 * ordered according to the following SGID values that classify them based on 833 * their attributes. The initial set of built in segments are in this order, 834 * and new mapfile defined segments are inserted into these groups. Within a 835 * given SGID group, the position of new segments depends on the syntax 836 * version of the mapfile that creates them. Version 1 (original sysv) 837 * mapfiles place the new segment at the head of their group (reverse creation 838 * order). The newer syntax places them at the end, following the others 839 * (creation order). 840 * 841 * Note that any new segments must always be added after PT_PHDR and 842 * PT_INTERP (refer Generic ABI, Page 5-4). 843 */ 844 #define SGID_PHDR 0 /* PT_PHDR */ 845 #define SGID_INTERP 1 /* PT_INTERP */ 846 #define SGID_SUNWCAP 2 /* PT_SUNWCAP */ 847 #define SGID_TEXT 3 /* PT_LOAD */ 848 #define SGID_DATA 4 /* PT_LOAD */ 849 #define SGID_BSS 5 /* PT_LOAD */ 850 #if defined(_ELF64) 851 #define SGID_LRODATA 6 /* PT_LOAD (amd64-only) */ 852 #define SGID_LDATA 7 /* PT_LOAD (amd64-only) */ 853 #endif 854 #define SGID_TEXT_EMPTY 8 /* PT_LOAD, reserved (?E in version 1 syntax) */ 855 #define SGID_NULL_EMPTY 9 /* PT_NULL, reserved (?E in version 1 syntax) */ 856 #define SGID_DYN 10 /* PT_DYNAMIC */ 857 #define SGID_DTRACE 11 /* PT_SUNWDTRACE */ 858 #define SGID_TLS 12 /* PT_TLS */ 859 #define SGID_UNWIND 13 /* PT_SUNW_UNWIND */ 860 #define SGID_SUNWSTACK 14 /* PT_SUNWSTACK */ 861 #define SGID_NOTE 15 /* PT_NOTE */ 862 #define SGID_NULL 16 /* PT_NULL, mapfile defined empty phdr slots */ 863 /* for use by post processors */ 864 #define SGID_EXTRA 17 /* PT_NULL (final catchall) */ 865 866 typedef Half sg_flags_t; 867 struct sg_desc { /* output segment descriptor */ 868 Word sg_id; /* segment identifier (for sorting) */ 869 Phdr sg_phdr; /* segment header for output file */ 870 const char *sg_name; /* segment name for PT_LOAD, PT_NOTE, */ 871 /* and PT_NULL, otherwise NULL */ 872 Xword sg_round; /* data rounding required (mapfile) */ 873 Xword sg_length; /* maximum segment length; if 0 */ 874 /* segment is not specified */ 875 APlist *sg_osdescs; /* list of output section descriptors */ 876 APlist *sg_is_order; /* list of entry criteria */ 877 /* giving input section order */ 878 Alist *sg_os_order; /* list specifying output section */ 879 /* ordering for the segment */ 880 sg_flags_t sg_flags; 881 APlist *sg_sizesym; /* size symbols for this segment */ 882 Xword sg_align; /* LCM of sh_addralign */ 883 Elf_Scn *sg_fscn; /* the SCN of the first section. */ 884 avl_node_t sg_avlnode; /* AVL book-keeping */ 885 }; 886 887 #define FLG_SG_P_VADDR 0x0001 /* p_vaddr segment attribute set */ 888 #define FLG_SG_P_PADDR 0x0002 /* p_paddr segment attribute set */ 889 #define FLG_SG_LENGTH 0x0004 /* length segment attribute set */ 890 #define FLG_SG_P_ALIGN 0x0008 /* p_align segment attribute set */ 891 #define FLG_SG_ROUND 0x0010 /* round segment attribute set */ 892 #define FLG_SG_P_FLAGS 0x0020 /* p_flags segment attribute set */ 893 #define FLG_SG_P_TYPE 0x0040 /* p_type segment attribute set */ 894 #define FLG_SG_IS_ORDER 0x0080 /* input section ordering is required */ 895 /* for this segment. */ 896 #define FLG_SG_NOHDR 0x0100 /* don't map ELF or phdrs into */ 897 /* this segment */ 898 #define FLG_SG_EMPTY 0x0200 /* an empty segment specification */ 899 /* no input sections will be */ 900 /* associated to this section */ 901 #define FLG_SG_KEY 0x0400 /* segment requires sort keys */ 902 #define FLG_SG_NODISABLE 0x0800 /* FLG_SG_DISABLED is not allowed on */ 903 /* this segment */ 904 #define FLG_SG_DISABLED 0x1000 /* this segment is disabled */ 905 #define FLG_SG_PHREQ 0x2000 /* this segment requires a program */ 906 /* header */ 907 #define FLG_SG_ORDERED 0x4000 /* SEGMENT_ORDER segment */ 908 909 struct sec_order { 910 const char *sco_secname; /* section name to be ordered */ 911 Half sco_flags; 912 }; 913 914 #define FLG_SGO_USED 0x0001 /* was ordering used? */ 915 916 typedef Half ec_flags_t; 917 struct ent_desc { /* input section entrance criteria */ 918 const char *ec_name; /* entrace criteria name, or NULL */ 919 Alist *ec_files; /* files from which to accept */ 920 /* sections */ 921 const char *ec_is_name; /* input section name to match */ 922 /* (NULL if none) */ 923 Word ec_type; /* section type */ 924 Word ec_attrmask; /* section attribute mask (AWX) */ 925 Word ec_attrbits; /* sections attribute bits */ 926 Sg_desc *ec_segment; /* output segment to enter if matched */ 927 Word ec_ordndx; /* index to determine where section */ 928 /* meeting this criteria should */ 929 /* inserted. Used for reordering */ 930 /* of sections. */ 931 ec_flags_t ec_flags; 932 avl_node_t ec_avlnode; /* AVL book-keeping */ 933 }; 934 935 #define FLG_EC_BUILTIN 0x0001 /* built in descriptor */ 936 #define FLG_EC_USED 0x0002 /* entrance criteria met? */ 937 #define FLG_EC_CATCHALL 0x0004 /* Catches any section */ 938 939 /* 940 * Ent_desc_file is the type of element maintained in the ec_files Alist 941 * of an entrance criteria descriptor. Each item maintains one file 942 * path, and a set of flags that specify the type of comparison it implies, 943 * and other information about it. The comparison type is maintained in 944 * the bottom byte of the flags. 945 */ 946 #define TYP_ECF_MASK 0x00ff /* Comparison type mask */ 947 #define TYP_ECF_PATH 0 /* Compare to file path */ 948 #define TYP_ECF_BASENAME 1 /* Compare to file basename */ 949 #define TYP_ECF_OBJNAME 2 /* Compare to regular file basename, */ 950 /* or to archive member name */ 951 #define TYP_ECF_NUM 3 952 953 #define FLG_ECF_ARMEMBER 0x0100 /* name includes archive member */ 954 955 typedef struct { 956 Word edf_flags; /* Type of comparison */ 957 const char *edf_name; /* String to compare to */ 958 size_t edf_name_len; /* strlen(edf_name) */ 959 } Ent_desc_file; 960 961 /* 962 * One structure is allocated for a move entry, and associated to the symbol 963 * against which a move is targeted. 964 */ 965 typedef struct { 966 Move *md_move; /* original Move entry */ 967 Xword md_start; /* start position */ 968 Xword md_len; /* length of initialization */ 969 Word md_oidx; /* output Move entry index */ 970 } Mv_desc; 971 972 /* 973 * Symbol descriptor. 974 */ 975 typedef Lword sd_flag_t; 976 struct sym_desc { 977 Alist *sd_GOTndxs; /* list of associated GOT entries */ 978 Sym *sd_sym; /* pointer to symbol table entry */ 979 Sym *sd_osym; /* copy of the original symbol entry */ 980 /* used only for local partial */ 981 Alist *sd_move; /* move information associated with a */ 982 /* partially initialized symbol */ 983 const char *sd_name; /* symbols name */ 984 Ifl_desc *sd_file; /* file where symbol is taken */ 985 Is_desc *sd_isc; /* input section of symbol definition */ 986 Sym_aux *sd_aux; /* auxiliary global symbol info. */ 987 Word sd_symndx; /* index in output symbol table */ 988 Word sd_shndx; /* sect. index sym is associated w/ */ 989 sd_flag_t sd_flags; /* state flags */ 990 Half sd_ref; /* reference definition of symbol */ 991 }; 992 993 /* 994 * The auxiliary symbol descriptor contains the additional information (beyond 995 * the symbol descriptor) required to process global symbols. These symbols are 996 * accessed via an internal symbol hash table where locality of reference is 997 * important for performance. 998 */ 999 struct sym_aux { 1000 APlist *sa_dfiles; /* files where symbol is defined */ 1001 Sym sa_sym; /* copy of symtab entry */ 1002 const char *sa_vfile; /* first unavailable definition */ 1003 const char *sa_rfile; /* file with first symbol referenced */ 1004 Word sa_hash; /* the pure hash value of symbol */ 1005 Word sa_PLTndx; /* index into PLT for symbol */ 1006 Word sa_PLTGOTndx; /* GOT entry indx for PLT indirection */ 1007 Word sa_linkndx; /* index of associated symbol from */ 1008 /* ET_DYN file */ 1009 Half sa_symspec; /* special symbol ids */ 1010 Half sa_overndx; /* output file versioning index */ 1011 Half sa_dverndx; /* dependency versioning index */ 1012 }; 1013 1014 /* 1015 * Nodes used to track symbols in the global AVL symbol dictionary. 1016 */ 1017 struct sym_avlnode { 1018 avl_node_t sav_node; /* AVL node */ 1019 Word sav_hash; /* symbol hash value */ 1020 const char *sav_name; /* symbol name */ 1021 Sym_desc *sav_sdp; /* symbol descriptor */ 1022 }; 1023 1024 /* 1025 * These are the ids for processing of `Special symbols'. They are used 1026 * to set the sym->sd_aux->sa_symspec field. 1027 */ 1028 #define SDAUX_ID_ETEXT 1 /* etext && _etext symbol */ 1029 #define SDAUX_ID_EDATA 2 /* edata && _edata symbol */ 1030 #define SDAUX_ID_END 3 /* end, _end, && _END_ symbol */ 1031 #define SDAUX_ID_DYN 4 /* DYNAMIC && _DYNAMIC symbol */ 1032 #define SDAUX_ID_PLT 5 /* _PROCEDURE_LINKAGE_TABLE_ symbol */ 1033 #define SDAUX_ID_GOT 6 /* _GLOBAL_OFFSET_TABLE_ symbol */ 1034 #define SDAUX_ID_START 7 /* START_ && _START_ symbol */ 1035 1036 /* 1037 * Flags for sym_desc.sd_flags 1038 */ 1039 #define FLG_SY_MVTOCOMM 0x00000001 /* assign symbol to common (.bss) */ 1040 /* this is a result of a */ 1041 /* copy reloc against sym */ 1042 #define FLG_SY_GLOBREF 0x00000002 /* a global reference has been seen */ 1043 #define FLG_SY_WEAKDEF 0x00000004 /* a weak definition has been used */ 1044 #define FLG_SY_CLEAN 0x00000008 /* `Sym' entry points to original */ 1045 /* input file (read-only). */ 1046 #define FLG_SY_UPREQD 0x00000010 /* symbol value update is required, */ 1047 /* either it's used as an entry */ 1048 /* point or for relocation, but */ 1049 /* it must be updated even if */ 1050 /* the -s flag is in effect */ 1051 #define FLG_SY_NOTAVAIL 0x00000020 /* symbol is not available to the */ 1052 /* application either because it */ 1053 /* originates from an implicitly */ 1054 /* referenced shared object, or */ 1055 /* because it is not part of a */ 1056 /* specified version. */ 1057 #define FLG_SY_REDUCED 0x00000040 /* a global is reduced to local */ 1058 #define FLG_SY_VERSPROM 0x00000080 /* version definition has been */ 1059 /* promoted to output file */ 1060 #define FLG_SY_PROT 0x00000100 /* stv_protected visibility seen */ 1061 #define FLG_SY_MAPREF 0x00000200 /* symbol reference generated by user */ 1062 /* from mapfile */ 1063 #define FLG_SY_REFRSD 0x00000400 /* symbols sd_ref has been raised */ 1064 /* due to a copy-relocs */ 1065 /* weak-strong pairing */ 1066 #define FLG_SY_INTPOSE 0x00000800 /* symbol defines an interposer */ 1067 #define FLG_SY_INVALID 0x00001000 /* unwanted/erroneous symbol */ 1068 #define FLG_SY_SMGOT 0x00002000 /* small got index assigned to symbol */ 1069 /* sparc only */ 1070 #define FLG_SY_PARENT 0x00004000 /* symbol to be found in parent */ 1071 /* only used with direct bindings */ 1072 #define FLG_SY_LAZYLD 0x00008000 /* symbol to cause lazyloading of */ 1073 /* parent object */ 1074 #define FLG_SY_ISDISC 0x00010000 /* symbol is a member of a DISCARDED */ 1075 /* section (COMDAT) */ 1076 #define FLG_SY_PAREXPN 0x00020000 /* partially init. symbol to be */ 1077 /* expanded */ 1078 #define FLG_SY_PLTPAD 0x00040000 /* pltpadding has been allocated for */ 1079 /* this symbol */ 1080 #define FLG_SY_REGSYM 0x00080000 /* REGISTER symbol (sparc only) */ 1081 #define FLG_SY_SOFOUND 0x00100000 /* compared against an SO definition */ 1082 #define FLG_SY_EXTERN 0x00200000 /* symbol is external, allows -zdefs */ 1083 /* error suppression */ 1084 #define FLG_SY_MAPUSED 0x00400000 /* mapfile symbol used (occurred */ 1085 /* within a relocatable object) */ 1086 #define FLG_SY_COMMEXP 0x00800000 /* COMMON symbol which has been */ 1087 /* allocated */ 1088 #define FLG_SY_CMDREF 0x01000000 /* symbol was referenced from the */ 1089 /* command line. (ld -u <>, */ 1090 /* ld -zrtldinfo=<>, ...) */ 1091 #define FLG_SY_SPECSEC 0x02000000 /* section index is reserved value */ 1092 /* ABS, COMMON, ... */ 1093 #define FLG_SY_TENTSYM 0x04000000 /* tentative symbol */ 1094 #define FLG_SY_VISIBLE 0x08000000 /* symbols visibility determined */ 1095 #define FLG_SY_STDFLTR 0x10000000 /* symbol is a standard filter */ 1096 #define FLG_SY_AUXFLTR 0x20000000 /* symbol is an auxiliary filter */ 1097 #define FLG_SY_DYNSORT 0x40000000 /* req. in dyn[sym|tls]sort section */ 1098 #define FLG_SY_NODYNSORT 0x80000000 /* excluded from dyn[sym_tls]sort sec */ 1099 1100 #define FLG_SY_DEFAULT 0x0000100000000 /* global symbol, default */ 1101 #define FLG_SY_SINGLE 0x0000200000000 /* global symbol, singleton defined */ 1102 #define FLG_SY_PROTECT 0x0000400000000 /* global symbol, protected defined */ 1103 #define FLG_SY_EXPORT 0x0000800000000 /* global symbol, exported defined */ 1104 1105 #define MSK_SY_GLOBAL \ 1106 (FLG_SY_DEFAULT | FLG_SY_SINGLE | FLG_SY_PROTECT | FLG_SY_EXPORT) 1107 /* this mask indicates that the */ 1108 /* symbol has been explicitly */ 1109 /* defined within a mapfile */ 1110 /* definition, and is a candidate */ 1111 /* for versioning */ 1112 1113 #define FLG_SY_HIDDEN 0x0001000000000 /* global symbol, reduce to local */ 1114 #define FLG_SY_ELIM 0x0002000000000 /* global symbol, eliminate */ 1115 #define FLG_SY_IGNORE 0x0004000000000 /* global symbol, ignored */ 1116 1117 #define MSK_SY_LOCAL (FLG_SY_HIDDEN | FLG_SY_ELIM | FLG_SY_IGNORE) 1118 /* this mask allows all local state */ 1119 /* flags to be removed when the */ 1120 /* symbol is copy relocated */ 1121 1122 #define FLG_SY_EXPDEF 0x0008000000000 /* symbol visibility defined */ 1123 /* explicitly */ 1124 1125 #define MSK_SY_NOAUTO (FLG_SY_SINGLE | FLG_SY_EXPORT | FLG_SY_EXPDEF) 1126 /* this mask indicates that the */ 1127 /* symbol is not a candidate for */ 1128 /* auto-reduction/elimination */ 1129 1130 #define FLG_SY_MAPFILE 0x0010000000000 /* symbol attribute defined in a */ 1131 /* mapfile */ 1132 #define FLG_SY_DIR 0x0020000000000 /* global symbol, direct bindings */ 1133 #define FLG_SY_NDIR 0x0040000000000 /* global symbol, nondirect bindings */ 1134 #define FLG_SY_OVERLAP 0x0080000000000 /* move entry overlap detected */ 1135 #define FLG_SY_CAP 0x0100000000000 /* symbol is associated with */ 1136 /* capabilities */ 1137 1138 /* 1139 * A symbol can only be truly hidden if it is not a capabilities symbol. 1140 */ 1141 #define SYM_IS_HIDDEN(_sdp) \ 1142 (((_sdp)->sd_flags & (FLG_SY_HIDDEN | FLG_SY_CAP)) == FLG_SY_HIDDEN) 1143 1144 /* 1145 * Create a mask for (sym.st_other & visibility) since the gABI does not yet 1146 * define a ELF*_ST_OTHER macro. 1147 */ 1148 #define MSK_SYM_VISIBILITY 0x7 1149 1150 /* 1151 * Structure to manage the shared object definition lists. There are two lists 1152 * that use this structure: 1153 * 1154 * - ofl_soneed; maintain the list of implicitly required dependencies 1155 * (ie. shared objects needed by other shared objects). These definitions 1156 * may include RPATH's required to locate the dependencies, and any 1157 * version requirements. 1158 * 1159 * - ofl_socntl; maintains the shared object control definitions. These are 1160 * provided by the user (via a mapfile) and are used to indicate any 1161 * version control requirements. 1162 */ 1163 struct sdf_desc { 1164 const char *sdf_name; /* the shared objects file name */ 1165 char *sdf_rpath; /* library search path DT_RPATH */ 1166 const char *sdf_rfile; /* referencing file for diagnostics */ 1167 Ifl_desc *sdf_file; /* the final input file descriptor */ 1168 Alist *sdf_vers; /* list of versions that are required */ 1169 /* from this object */ 1170 Alist *sdf_verneed; /* list of VERNEEDS to create for */ 1171 /* object via mapfile ADDVERS */ 1172 Word sdf_flags; 1173 }; 1174 1175 #define FLG_SDF_SELECT 0x01 /* version control selection required */ 1176 #define FLG_SDF_VERIFY 0x02 /* version definition verification */ 1177 /* required */ 1178 #define FLG_SDF_ADDVER 0x04 /* add VERNEED references */ 1179 1180 /* 1181 * Structure to manage shared object version usage requirements. 1182 */ 1183 struct sdv_desc { 1184 const char *sdv_name; /* version name */ 1185 const char *sdv_ref; /* versions reference */ 1186 Word sdv_flags; /* flags */ 1187 }; 1188 1189 #define FLG_SDV_MATCHED 0x01 /* VERDEF found and matched */ 1190 1191 /* 1192 * Structures to manage versioning information. Two versioning structures are 1193 * defined: 1194 * 1195 * - a version descriptor maintains a linked list of versions and their 1196 * associated dependencies. This is used to build the version definitions 1197 * for an image being created (see map_symbol), and to determine the 1198 * version dependency graph for any input files that are versioned. 1199 * 1200 * - a version index array contains each version of an input file that is 1201 * being processed. It informs us which versions are available for 1202 * binding, and is used to generate any version dependency information. 1203 */ 1204 struct ver_desc { 1205 const char *vd_name; /* version name */ 1206 Ifl_desc *vd_file; /* file that defined version */ 1207 Word vd_hash; /* hash value of name */ 1208 Half vd_ndx; /* coordinates with symbol index */ 1209 Half vd_flags; /* version information */ 1210 APlist *vd_deps; /* version dependencies */ 1211 Ver_desc *vd_ref; /* dependency's first reference */ 1212 }; 1213 1214 struct ver_index { 1215 const char *vi_name; /* dependency version name */ 1216 Half vi_flags; /* communicates availability */ 1217 Half vi_overndx; /* index assigned to this version in */ 1218 /* output object Verneed section */ 1219 Ver_desc *vi_desc; /* cross reference to descriptor */ 1220 }; 1221 1222 /* 1223 * Define any internal version descriptor flags ([vd|vi]_flags). Note that the 1224 * first byte is reserved for user visible flags (refer VER_FLG's in link.h). 1225 */ 1226 #define MSK_VER_USER 0x0f /* mask for user visible flags */ 1227 1228 #define FLG_VER_AVAIL 0x10 /* version is available for binding */ 1229 #define FLG_VER_REFER 0x20 /* version has been referenced */ 1230 #define FLG_VER_CYCLIC 0x40 /* a member of cyclic dependency */ 1231 1232 /* 1233 * isalist(1) descriptor - used to break an isalist string into its component 1234 * options. 1235 */ 1236 struct isa_opt { 1237 char *isa_name; /* individual isa option name */ 1238 size_t isa_namesz; /* and associated size */ 1239 }; 1240 1241 struct isa_desc { 1242 char *isa_list; /* sysinfo(SI_ISALIST) list */ 1243 size_t isa_listsz; /* and associated size */ 1244 Isa_opt *isa_opt; /* table of individual isa options */ 1245 size_t isa_optno; /* and associated number */ 1246 }; 1247 1248 /* 1249 * uname(2) descriptor - used to break a utsname structure into its component 1250 * options (at least those that we're interested in). 1251 */ 1252 struct uts_desc { 1253 char *uts_osname; /* operating system name */ 1254 size_t uts_osnamesz; /* and associated size */ 1255 char *uts_osrel; /* operating system release */ 1256 size_t uts_osrelsz; /* and associated size */ 1257 }; 1258 1259 /* 1260 * SHT_GROUP descriptor - used to track group sections at the global 1261 * level to resolve conflicts and determine which to keep. 1262 */ 1263 struct group_desc { 1264 Is_desc *gd_isc; /* input section descriptor */ 1265 Is_desc *gd_oisc; /* overriding input section */ 1266 /* descriptor when discarded */ 1267 const char *gd_name; /* group name (signature symbol) */ 1268 Word *gd_data; /* data for group section */ 1269 size_t gd_cnt; /* number of entries in group data */ 1270 }; 1271 1272 /* 1273 * Indexes into the ld_support_funcs[] table. 1274 */ 1275 typedef enum { 1276 LDS_VERSION = 0, /* Must be first and have value 0 */ 1277 LDS_INPUT_DONE, 1278 LDS_START, 1279 LDS_ATEXIT, 1280 LDS_OPEN, 1281 LDS_FILE, 1282 LDS_INSEC, 1283 LDS_SEC, 1284 LDS_NUM 1285 } Support_ndx; 1286 1287 /* 1288 * Structure to manage archive member caching. Each archive has an archive 1289 * descriptor (Ar_desc) associated with it. This contains pointers to the 1290 * archive symbol table (obtained by elf_getarsyms(3e)) and an auxiliary 1291 * structure (Ar_uax[]) that parallels this symbol table. The member element 1292 * of this auxiliary table indicates whether the archive member associated with 1293 * the symbol offset has already been extracted (AREXTRACTED) or partially 1294 * processed (refer process_member()). 1295 */ 1296 typedef struct ar_mem { 1297 Elf *am_elf; /* elf descriptor for this member */ 1298 char *am_name; /* members name */ 1299 char *am_path; /* path (ie. lib(foo.o)) */ 1300 Sym *am_syms; /* start of global symbols */ 1301 char *am_strs; /* associated string table start */ 1302 Xword am_symn; /* no. of global symbols */ 1303 } Ar_mem; 1304 1305 typedef struct ar_aux { 1306 Sym_desc *au_syms; /* internal symbol descriptor */ 1307 Ar_mem *au_mem; /* associated member */ 1308 } Ar_aux; 1309 1310 #define FLG_ARMEM_PROC (Ar_mem *)-1 1311 1312 typedef struct ar_desc { 1313 const char *ad_name; /* archive file name */ 1314 Elf *ad_elf; /* elf descriptor for the archive */ 1315 Elf_Arsym *ad_start; /* archive symbol table start */ 1316 Ar_aux *ad_aux; /* auxiliary symbol information */ 1317 dev_t ad_stdev; /* device id and inode number for */ 1318 ino_t ad_stino; /* multiple inclusion checks */ 1319 ofl_flag_t ad_flags; /* archive specific cmd line flags */ 1320 } Ar_desc; 1321 1322 /* 1323 * Define any archive descriptor flags. NOTE, make sure they do not clash with 1324 * any output file descriptor archive extraction flags, as these are saved in 1325 * the same entry (see MSK_OF1_ARCHIVE). 1326 */ 1327 #define FLG_ARD_EXTRACT 0x00010000 /* archive member has been extracted */ 1328 1329 /* Mapfile versions supported by libld */ 1330 #define MFV_NONE 0 /* Not a valid version */ 1331 #define MFV_SYSV 1 /* Original System V syntax */ 1332 #define MFV_SOLARIS 2 /* Solaris mapfile syntax */ 1333 #define MFV_NUM 3 /* # of mapfile versions */ 1334 1335 1336 /* 1337 * Function Declarations. 1338 */ 1339 #if defined(_ELF64) 1340 1341 #define ld_create_outfile ld64_create_outfile 1342 #define ld_ent_setup ld64_ent_setup 1343 #define ld_init_strings ld64_init_strings 1344 #define ld_init_target ld64_init_target 1345 #define ld_make_sections ld64_make_sections 1346 #define ld_main ld64_main 1347 #define ld_ofl_cleanup ld64_ofl_cleanup 1348 #define ld_process_mem ld64_process_mem 1349 #define ld_reloc_init ld64_reloc_init 1350 #define ld_reloc_process ld64_reloc_process 1351 #define ld_sym_validate ld64_sym_validate 1352 #define ld_update_outfile ld64_update_outfile 1353 1354 #else 1355 1356 #define ld_create_outfile ld32_create_outfile 1357 #define ld_ent_setup ld32_ent_setup 1358 #define ld_init_strings ld32_init_strings 1359 #define ld_init_target ld32_init_target 1360 #define ld_make_sections ld32_make_sections 1361 #define ld_main ld32_main 1362 #define ld_ofl_cleanup ld32_ofl_cleanup 1363 #define ld_process_mem ld32_process_mem 1364 #define ld_reloc_init ld32_reloc_init 1365 #define ld_reloc_process ld32_reloc_process 1366 #define ld_sym_validate ld32_sym_validate 1367 #define ld_update_outfile ld32_update_outfile 1368 1369 #endif 1370 1371 extern int ld_getopt(Lm_list *, int, int, char **); 1372 1373 extern int ld32_main(int, char **, Half); 1374 extern int ld64_main(int, char **, Half); 1375 1376 extern uintptr_t ld_create_outfile(Ofl_desc *); 1377 extern uintptr_t ld_ent_setup(Ofl_desc *, Xword); 1378 extern uintptr_t ld_init_strings(Ofl_desc *); 1379 extern int ld_init_target(Lm_list *, Half mach); 1380 extern uintptr_t ld_make_sections(Ofl_desc *); 1381 extern void ld_ofl_cleanup(Ofl_desc *); 1382 extern Ifl_desc *ld_process_mem(const char *, const char *, char *, 1383 size_t, Ofl_desc *, Rej_desc *); 1384 extern uintptr_t ld_reloc_init(Ofl_desc *); 1385 extern uintptr_t ld_reloc_process(Ofl_desc *); 1386 extern uintptr_t ld_sym_validate(Ofl_desc *); 1387 extern uintptr_t ld_update_outfile(Ofl_desc *); 1388 1389 #ifdef __cplusplus 1390 } 1391 #endif 1392 1393 #endif /* _LIBLD_H */ 1394