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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1988 AT&T 24 * All Rights Reserved 25 * 26 * 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #ifndef _LIBLD_H 32 #define _LIBLD_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <stdlib.h> 37 #include <libelf.h> 38 #include <sgs.h> 39 #include <machdep.h> 40 #include <string_table.h> 41 #include <sys/avl.h> 42 #include <alist.h> 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 /* 49 * Default directory search path manipulation for the link-editor. YLDIR 50 * indicates which directory in LIBPATH is replaced by the -YL option to cc 51 * and ld. YUDIR indicates which directory is replaced by -YU. 52 */ 53 #define YLDIR 1 54 #define YUDIR 2 55 56 /* 57 * Define a hash value that can never be returned from elf_hash(). 58 */ 59 #define SYM_NOHASH (~(Word)0) 60 61 /* 62 * Define MACROs to be used for input sections to flagout 63 * when matching sections. 64 */ 65 #define ALL_SHF_ORDER (SHF_ORDERED | SHF_LINK_ORDER) 66 #define ALL_SHF_IGNORE (ALL_SHF_ORDER | SHF_GROUP) 67 68 /* 69 * Define symbol reference types for use in symbol resolution. 70 */ 71 typedef enum { 72 REF_DYN_SEEN, /* a .so symbol has been seen */ 73 REF_DYN_NEED, /* a .so symbol satisfies a .o symbol */ 74 REF_REL_NEED, /* a .o symbol */ 75 REF_NUM /* the number of symbol references */ 76 } Symref; 77 78 79 /* 80 * GOT reference models 81 */ 82 typedef enum { 83 GOT_REF_GENERIC, /* generic symbol reference */ 84 GOT_REF_TLSIE, /* TLS initial exec (gnu) reference */ 85 GOT_REF_TLSLD, /* TLS local dynamic reference */ 86 GOT_REF_TLSGD /* TLS general dynamic reference */ 87 } Gotref; 88 89 typedef struct { 90 Xword gn_addend; /* addend associated with GOT entry */ 91 Sword gn_gotndx; /* GOT table index */ 92 Gotref gn_gotref; 93 } Gotndx; 94 95 /* 96 * Got debugging structure. The got index is defined as a signed value as we 97 * do so much mucking around with negative and positive gots on SPARC, and sign 98 * extension is necessary when building 64-bit objects. On intel we explicitly 99 * cast this variable to an unsigned value. 100 */ 101 typedef struct { 102 Sym_desc * gt_sym; 103 Gotndx gt_gndx; 104 } Gottable; 105 106 107 /* 108 * Output file processing structure 109 */ 110 struct ofl_desc { 111 char *ofl_sgsid; /* link-editor identification */ 112 const char *ofl_name; /* full file name */ 113 Elf *ofl_elf; /* elf_memory() elf descriptor */ 114 Elf *ofl_welf; /* ELF_C_WRITE elf descriptor */ 115 Ehdr *ofl_ehdr; /* elf header describing this file */ 116 Phdr *ofl_phdr; /* program header descriptor */ 117 Phdr *ofl_tlsphdr; /* TLS phdr */ 118 int ofl_fd; /* file descriptor */ 119 size_t ofl_size; /* image size */ 120 List ofl_maps; /* list of input mapfiles */ 121 List ofl_segs; /* list of segments */ 122 List ofl_ents; /* list of entrance descriptors */ 123 List ofl_objs; /* relocatable object file list */ 124 Word ofl_objscnt; /* and count */ 125 List ofl_ars; /* archive library list */ 126 Word ofl_arscnt; /* and count */ 127 List ofl_sos; /* shared object list */ 128 Word ofl_soscnt; /* and count */ 129 List ofl_soneed; /* list of implicitly required .so's */ 130 List ofl_socntl; /* list of .so control definitions */ 131 List ofl_outrels; /* list of output relocations */ 132 Word ofl_outrelscnt; /* and count */ 133 List ofl_actrels; /* list of relocations to perform */ 134 Word ofl_actrelscnt; /* and count */ 135 List ofl_copyrels; /* list of copy relocations */ 136 List ofl_ordered; /* list of shf_ordered sections */ 137 List ofl_syminfsyms; /* list of interesting syms */ 138 /* for syminfo processing */ 139 List ofl_ismove; /* list of .SUNW_move sections */ 140 List ofl_mvrelisdescs; /* list of relocation input section */ 141 /* targeting to expanded area */ 142 List ofl_parsym; /* list of Parsym_info */ 143 List ofl_extrarels; /* relocation sections which have */ 144 /* a NULL sh_info */ 145 avl_tree_t *ofl_groups; /* pointer to head of Groups AVL tree */ 146 List ofl_initarray; /* list of init array func names */ 147 List ofl_finiarray; /* list of fini array func names */ 148 List ofl_preiarray; /* list of preinit array func names */ 149 List ofl_rtldinfo; /* list of rtldinfo syms */ 150 List ofl_osgroups; /* list of output GROUP sections */ 151 List ofl_ostlsseg; /* pointer to sections in TLS segment */ 152 #if (defined(__i386) || defined(__amd64)) && defined(_ELF64) 153 List ofl_unwind; /* list of unwind output sections */ 154 Os_desc *ofl_unwindhdr; /* Unwind hdr */ 155 #endif 156 avl_tree_t ofl_symavl; /* pointer to head of Syms AVL tree */ 157 Sym_desc **ofl_regsyms; /* array of potential register */ 158 Word ofl_regsymsno; /* symbols and array count */ 159 Word ofl_regsymcnt; /* no. of output register symbols */ 160 Word ofl_lregsymcnt; /* no. of local register symbols */ 161 Sym_desc *ofl_dtracesym; /* ld -zdtrace= */ 162 Half ofl_e_machine; /* elf header e_machine field setting */ 163 Word ofl_e_flags; /* elf header e_flags field setting */ 164 Word ofl_libver; /* max version that libelf can handle */ 165 Word ofl_flags; /* various state bits, args etc. */ 166 Word ofl_flags1; /* more flags */ 167 Xword ofl_segorigin; /* segment origin (start) */ 168 void *ofl_entry; /* entry point (-e and Sym_desc *) */ 169 char *ofl_filtees; /* shared objects we are a filter for */ 170 const char *ofl_soname; /* (-h option) output file name for */ 171 /* dynamic structure */ 172 const char *ofl_interp; /* interpreter name used by exec() */ 173 char *ofl_rpath; /* run path to store in .dynamic */ 174 char *ofl_config; /* config path to store in .dynamic */ 175 List ofl_ulibdirs; /* user supplied library search list */ 176 List ofl_dlibdirs; /* default library search list */ 177 Word ofl_vercnt; /* number of versions to generate */ 178 List ofl_verdesc; /* list of version descriptors */ 179 size_t ofl_verdefsz; /* size of version definition section */ 180 size_t ofl_verneedsz; /* size of version needed section */ 181 Word ofl_entercnt; /* no. of global symbols entered */ 182 Word ofl_globcnt; /* no. of global symbols to output */ 183 Word ofl_scopecnt; /* no. of scoped symbols to output */ 184 Word ofl_elimcnt; /* no. of eliminated symbols */ 185 Word ofl_locscnt; /* no. of local symbols to output */ 186 Word ofl_dynshdrcnt; /* no. of output section in .dynsym */ 187 Word ofl_shdrcnt; /* no. of output sections */ 188 Str_tbl *ofl_shdrsttab; /* Str_tbl for shdr strtab */ 189 Str_tbl *ofl_strtab; /* Str_tbl for symtab strtab */ 190 Str_tbl *ofl_dynstrtab; /* Str_tbl for dymsym strtab */ 191 Gotndx *ofl_tlsldgotndx; /* index to LD TLS_index structure */ 192 Xword ofl_relocsz; /* size of output relocations */ 193 Xword ofl_relocgotsz; /* size of .got relocations */ 194 Xword ofl_relocpltsz; /* size of .plt relocations */ 195 Xword ofl_relocbsssz; /* size of .bss (copy) relocations */ 196 Xword ofl_relocrelsz; /* size of .rel[a] relocations */ 197 Word ofl_relocincnt; /* no. of input relocations */ 198 Word ofl_reloccnt; /* tot number of output relocations */ 199 Word ofl_reloccntsub; /* tot numb of output relocations to */ 200 /* skip (-zignore) */ 201 Word ofl_relocrelcnt; /* tot number of relative */ 202 /* relocations */ 203 Word ofl_gotcnt; /* no. of .got entries */ 204 Word ofl_pltcnt; /* no. of .plt entries */ 205 Word ofl_pltpad; /* no. of .plt padd entries */ 206 Word ofl_hashbkts; /* no. of hash buckets required */ 207 Is_desc *ofl_isbss; /* .bss input section (globals) */ 208 Is_desc *ofl_istlsbss; /* .tlsbss input section (globals) */ 209 Is_desc *ofl_issunwdata1; /* .data input section */ 210 /* partially expanded. */ 211 Is_desc *ofl_issunwbss; /* .SUNW_bss input section (globals) */ 212 Os_desc *ofl_osdynamic; /* .dynamic output section */ 213 Os_desc *ofl_osdynsym; /* .dynsym output section */ 214 Os_desc *ofl_osdynstr; /* .dynstr output section */ 215 Os_desc *ofl_osgot; /* .got output section */ 216 Os_desc *ofl_oshash; /* .hash output section */ 217 Os_desc *ofl_osinitarray; /* .initarray output section */ 218 Os_desc *ofl_osfiniarray; /* .finiarray output section */ 219 Os_desc *ofl_ospreinitarray; /* .preinitarray output section */ 220 Os_desc *ofl_osinterp; /* .interp output section */ 221 Os_desc *ofl_oscap; /* .SUNW_cap output section */ 222 Os_desc *ofl_osplt; /* .plt output section */ 223 Os_desc *ofl_osmove; /* .SUNW_move output section */ 224 Os_desc *ofl_osrelhead; /* first relocation section */ 225 Os_desc *ofl_osrel; /* .rel[a] relocation section */ 226 Os_desc *ofl_osshstrtab; /* .shstrtab output section */ 227 Os_desc *ofl_osstrtab; /* .strtab output section */ 228 Os_desc *ofl_ossymtab; /* .symtab output section */ 229 Os_desc *ofl_ossymshndx; /* .symtab_shndx output section */ 230 Os_desc *ofl_osdynshndx; /* .dynsym_shndx output section */ 231 Os_desc *ofl_osverdef; /* .version definition output section */ 232 Os_desc *ofl_osverneed; /* .version needed output section */ 233 Os_desc *ofl_osversym; /* .version symbol ndx output section */ 234 Word ofl_dtflags_1; /* DT_FLAGS_1 entries */ 235 Word ofl_dtflags; /* DT_FLAGS entries */ 236 Os_desc *ofl_ossyminfo; /* .SUNW_syminfo output section */ 237 Half ofl_sunwdata1ndx; /* section index for sunwdata1 */ 238 /* Ref. at perform_outreloc() in */ 239 /* libld/{mach}/machrel.c */ 240 Xword *ofl_checksum; /* DT_CHECKSUM value address */ 241 char *ofl_depaudit; /* dependency auditing required (-P) */ 242 char *ofl_audit; /* object auditing required (-p) */ 243 Alist *ofl_symfltrs; /* per-symbol filtees and their */ 244 Alist *ofl_dtsfltrs; /* associated .dynamic/.dynstrs */ 245 Xword ofl_hwcap_1; /* hardware capabilities */ 246 Xword ofl_sfcap_1; /* software capabilities */ 247 }; 248 249 #define FLG_OF_DYNAMIC 0x00000001 /* generate dynamic output module */ 250 #define FLG_OF_STATIC 0x00000002 /* generate static output module */ 251 #define FLG_OF_EXEC 0x00000004 /* generate an executable */ 252 #define FLG_OF_RELOBJ 0x00000008 /* generate a relocatable object */ 253 #define FLG_OF_SHAROBJ 0x00000010 /* generate a shared object */ 254 #define FLG_OF_BFLAG 0x00000020 /* do no special plt building: -b */ 255 #define FLG_OF_IGNENV 0x00000040 /* ignore LD_LIBRARY_PATH: -i */ 256 #define FLG_OF_STRIP 0x00000080 /* strip output: -s */ 257 #define FLG_OF_NOWARN 0x00000100 /* disable symbol warnings: -t */ 258 #define FLG_OF_NOUNDEF 0x00000200 /* allow no undefined symbols: -zdefs */ 259 #define FLG_OF_PURETXT 0x00000400 /* allow no text relocations: -ztext */ 260 #define FLG_OF_GENMAP 0x00000800 /* generate a memory map: -m */ 261 #define FLG_OF_DYNLIBS 0x00001000 /* dynamic input allowed: -Bdynamic */ 262 #define FLG_OF_SYMBOLIC 0x00002000 /* bind global symbols: -Bsymbolic */ 263 #define FLG_OF_ADDVERS 0x00004000 /* add version stamp: -Qy */ 264 #define FLG_OF_MEMORY 0x00008000 /* produce a memory model */ 265 #define FLG_OF_SEGORDER 0x00010000 /* segment ordering is required */ 266 #define FLG_OF_SEGSORT 0x00020000 /* segment sorting is required */ 267 #define FLG_OF_TEXTREL 0x00040000 /* text relocations have been found */ 268 #define FLG_OF_MULDEFS 0x00080000 /* multiple symbols are allowed */ 269 #define FLG_OF_TLSPHDR 0x00100000 /* a TLS program header is required */ 270 #define FLG_OF_BLDGOT 0x00200000 /* build GOT table */ 271 #define FLG_OF_VERDEF 0x00400000 /* record version definitions */ 272 #define FLG_OF_VERNEED 0x00800000 /* record version dependencies */ 273 #define FLG_OF_NOVERSEC 0x01000000 /* don't record version sections */ 274 #define FLG_OF_AUTOLCL 0x02000000 /* automatically reduce unspecified */ 275 /* global symbols to locals */ 276 #define FLG_OF_PROCRED 0x04000000 /* process any symbol reductions by */ 277 /* effecting the symbol table */ 278 /* output and relocations */ 279 #define FLG_OF_SYMINFO 0x08000000 /* create a syminfo section */ 280 #define FLG_OF_AUX 0x10000000 /* ofl_filter is an auxiliary filter */ 281 #define FLG_OF_FATAL 0x20000000 /* fatal error during input */ 282 #define FLG_OF_WARN 0x40000000 /* warning during input processing. */ 283 #define FLG_OF_VERBOSE 0x80000000 /* -z verbose flag set */ 284 285 /* 286 * In the flags1 arena, establish any options that are applicable to archive 287 * extraction first, and associate a mask. These values are recorded with any 288 * archive descriptor so that they may be reset should the archive require a 289 * rescan to try and resolve undefined symbols. 290 */ 291 #define FLG_OF1_ALLEXRT 0x00000001 /* extract all members from an */ 292 /* archive file */ 293 #define FLG_OF1_WEAKEXT 0x00000002 /* allow archive extraction to */ 294 /* resolve weak references */ 295 #define MSK_OF1_ARCHIVE 0x0000000f /* archive flags mask */ 296 297 #define FLG_OF1_ZDIRECT 0x00000010 /* -z direct flag set */ 298 #define FLG_OF1_NDIRECT 0x00000020 /* no-direct bindings specified */ 299 #define FLG_OF1_OVHWCAP 0x00000040 /* override any input hardware or */ 300 #define FLG_OF1_OVSFCAP 0x00000080 /* software capabilities */ 301 #define FLG_OF1_RELDYN 0x00000100 /* process .dynamic in rel obj */ 302 #define FLG_OF1_REDLSYM 0x00000200 /* reduce local symbols */ 303 #define FLG_OF1_AUTOELM 0x00000400 /* automatically eliminate */ 304 /* unspecified global symbols */ 305 #define FLG_OF1_IGNORE 0x00000800 /* ignore unused dependencies */ 306 #define FLG_OF1_RELCNT 0x00001000 /* enable DT_RELACNT tracking */ 307 #define FLG_OF1_TEXTOFF 0x00002000 /* text relocations are ok */ 308 #define FLG_OF1_ABSEXEC 0x00004000 /* -zabsexec set */ 309 #define FLG_OF1_LAZYLD 0x00008000 /* lazy loading of objects enabled */ 310 #define FLG_OF1_GRPPRM 0x00010000 /* dependencies are to have */ 311 /* GROUPPERM enabled */ 312 #define FLG_OF1_OVRFLW 0x00020000 /* size exceeds 32-bit limitation */ 313 /* of 32-bit libld */ 314 #define FLG_OF1_NOPARTI 0x00040000 /* -znopartial set */ 315 #define FLG_OF1_BSSOREL 0x00080000 /* output relocation against bss */ 316 /* section */ 317 #define FLG_OF1_TLSOREL 0x00100000 /* output relocation against .tlsbss */ 318 /* section */ 319 #define FLG_OF1_DEMANGL 0x00200000 /* demangle C++ sym name diagnostics */ 320 321 #define FLG_OF1_NOHDR 0x00800000 /* no elf header/phdr alignment */ 322 /* needed */ 323 #define FLG_OF1_VADDR 0x01000000 /* vaddr was explicitly set */ 324 #define FLG_OF1_EXTRACT 0x02000000 /* archive member has been extracted */ 325 #define FLG_OF1_RESCAN 0x04000000 /* any archives should be rescanned */ 326 #define FLG_OF1_IGNPRC 0x08000000 /* ignore processing required */ 327 #define FLG_OF1_NCSTTAB 0x10000000 /* -znocompstrtab set */ 328 #define FLG_OF1_DONE 0x20000000 /* link-editor processing complete */ 329 #define FLG_OF1_NONREG 0x40000000 /* non-regular file specified as */ 330 /* the output file */ 331 #define FLG_OF1_ALNODIR 0x80000000 /* establish NODIRECT for all */ 332 /* exported interfaces. */ 333 334 /* 335 * Relocation (active & output) processing structure - transparent to common 336 * code. 337 */ 338 struct rel_desc { 339 Os_desc *rel_osdesc; /* output section reloc is against */ 340 Is_desc *rel_isdesc; /* input section reloc is against */ 341 const char *rel_sname; /* symbol name (may be "unknown") */ 342 Sym_desc *rel_sym; /* sym relocation is against */ 343 Sym_desc *rel_usym; /* strong sym if this is a weak pair */ 344 Mv_desc *rel_move; /* move table information */ 345 Word rel_flags; /* misc. flags for relocations */ 346 Word rel_rtype; /* relocation type */ 347 Xword rel_roffset; /* relocation offset */ 348 Sxword rel_raddend; /* addend from input relocation */ 349 Word rel_typedata; /* ELF_R_TYPE_DATA(info) */ 350 }; 351 352 /* 353 * common flags used on the Rel_desc structure (defined in machrel.h). 354 */ 355 #define FLG_REL_GOT 0x00000001 /* relocation against GOT */ 356 #define FLG_REL_PLT 0x00000002 /* relocation against PLT */ 357 #define FLG_REL_BSS 0x00000004 /* relocation against BSS */ 358 #define FLG_REL_LOAD 0x00000008 /* section loadable */ 359 #define FLG_REL_SCNNDX 0x00000010 /* use section index for symbol ndx */ 360 #define FLG_REL_CLVAL 0x00000020 /* clear VALUE for active relocation */ 361 #define FLG_REL_ADVAL 0x00000040 /* add VALUE for output relocation, */ 362 /* only relevent to SPARC and */ 363 /* R_SPARC_RELATIVE */ 364 #define FLG_REL_GOTCL 0x00000080 /* clear the GOT entry. This is */ 365 /* relevant to RELA relocations, */ 366 /* not REL (i386) relocations */ 367 #define FLG_REL_MOVETAB 0x00000100 /* Relocation against .SUNW_move */ 368 /* adjustments required before */ 369 /* actual relocation */ 370 #define FLG_REL_NOINFO 0x00000200 /* Relocation comes from a section */ 371 /* with a null sh_info field */ 372 #define FLG_REL_REG 0x00000400 /* Relocation target is reg sym */ 373 #define FLG_REL_FPTR 0x00000800 /* relocation against func. desc. */ 374 #define FLG_REL_RFPTR1 0x00001000 /* Relative relocation against */ 375 /* 1st part of FD */ 376 #define FLG_REL_RFPTR2 0x00002000 /* Relative relocation against */ 377 /* 2nd part of FD */ 378 #define FLG_REL_DISP 0x00004000 /* *disp* relocation */ 379 #define FLG_REL_STLS 0x00008000 /* IE TLS reference to */ 380 /* static TLS GOT index */ 381 #define FLG_REL_DTLS 0x00010000 /* GD TLS reference relative to */ 382 /* dynamic TLS GOT index */ 383 #define FLG_REL_MTLS 0x00020000 /* LD TLS reference against GOT */ 384 #define FLG_REL_STTLS 0x00040000 /* LE TLS reference directly */ 385 /* to static tls index */ 386 #define FLG_REL_TLSFIX 0x00080000 /* relocation points to TLS instr. */ 387 /* which needs updating */ 388 #define FLG_REL_RELA 0x00100000 /* descripter captures a Rela */ 389 #define FLG_REL_GOTFIX 0x00200000 /* relocation points to GOTOP instr. */ 390 /* which needs updating */ 391 392 /* 393 * Structure to hold a cache of Relocations. 394 */ 395 struct rel_cache { 396 Rel_desc *rc_end; 397 Rel_desc *rc_free; 398 }; 399 400 /* 401 * Symbol value descriptor. For relocatable objects, each symbols value is 402 * its offset within its associated section. Therefore, to uniquely define 403 * each symbol within a reloctable object, record and sort the sh_offset and 404 * symbol value. This information is used to seach for displacement 405 * relocations as part of copy relocation validation. 406 */ 407 typedef struct { 408 Addr ssv_value; 409 Sym_desc *ssv_sdp; 410 } Ssv_desc; 411 412 /* 413 * Input file processing structures. 414 */ 415 struct ifl_desc { /* input file descriptor */ 416 const char *ifl_name; /* full file name */ 417 const char *ifl_soname; /* shared object name */ 418 dev_t ifl_stdev; /* device id and inode number for .so */ 419 ino_t ifl_stino; /* multiple inclusion checks */ 420 Ehdr *ifl_ehdr; /* elf header describing this file */ 421 Elf *ifl_elf; /* elf descriptor for this file */ 422 Sym_desc **ifl_oldndx; /* original symbol table indices */ 423 Sym_desc *ifl_locs; /* symbol desc version of locals */ 424 Ssv_desc *ifl_sortsyms; /* sorted list of symbols by value */ 425 Word ifl_locscnt; /* no. of local symbols to process */ 426 Word ifl_symscnt; /* total no. of symbols to process */ 427 Word ifl_sortcnt; /* no. of sorted symbols to process */ 428 Word ifl_shnum; /* number of sections in file */ 429 Word ifl_shstrndx; /* index to .shstrtab */ 430 Word ifl_vercnt; /* number of versions in file */ 431 Is_desc **ifl_isdesc; /* isdesc[scn ndx] = Is_desc ptr */ 432 Sdf_desc *ifl_sdfdesc; /* control definition */ 433 Versym *ifl_versym; /* version symbol table array */ 434 Ver_index *ifl_verndx; /* verndx[ver ndx] = Ver_index */ 435 List ifl_verdesc; /* version descriptor list */ 436 List ifl_relsect; /* relocation section list */ 437 Alist *ifl_groups; /* SHT_GROUP section list */ 438 Half ifl_neededndx; /* index to NEEDED in .dyn section */ 439 Half ifl_flags; /* Explicit/implicit reference */ 440 }; 441 442 #define FLG_IF_CMDLINE 0x00001 /* full filename specified from the */ 443 /* command line (no -l) */ 444 #define FLG_IF_NEEDED 0x00002 /* shared object should be recorded */ 445 #define FLG_IF_DIRECT 0x00004 /* establish direct bindings to this */ 446 /* object */ 447 #define FLG_IF_EXTRACT 0x00008 /* file extracted from an archive */ 448 #define FLG_IF_VERNEED 0x00010 /* version dependency information is */ 449 /* required */ 450 #define FLG_IF_DEPREQD 0x00020 /* dependency is required to satisfy */ 451 /* symbol references */ 452 #define FLG_IF_NEEDSTR 0x00040 /* dependency specified by -Nn */ 453 /* flag */ 454 #define FLG_IF_IGNORE 0x00080 /* ignore unused dependencies */ 455 #define FLG_IF_NODIRECT 0x00100 /* object contains symbols that */ 456 /* cannot be directly bound to. */ 457 #define FLG_IF_LAZYLD 0x00200 /* bindings to this object should be */ 458 /* lazy loaded */ 459 #define FLG_IF_GRPPRM 0x00400 /* this dependency should have the */ 460 /* DF_P1_GROUPPERM flag set */ 461 #define FLG_IF_DISPPEND 0x00800 /* displacement relocation done */ 462 /* in the ld time. */ 463 #define FLG_IF_DISPDONE 0x01000 /* displacement relocation done */ 464 /* at the run time */ 465 #define FLG_IF_MAPFILE 0x02000 /* file is a mapfile */ 466 #define FLG_IF_HSTRTAB 0x04000 /* file has a string section */ 467 #define FLG_IF_FILEREF 0x08000 /* file contains a section which */ 468 /* is included in the output */ 469 /* allocatable image */ 470 471 struct is_desc { /* input section descriptor */ 472 const char *is_name; /* the section name */ 473 const char *is_basename; /* original section name (without */ 474 /* .<sect>%<func> munging */ 475 Shdr *is_shdr; /* the elf section header */ 476 Ifl_desc *is_file; /* infile desc for this section */ 477 Os_desc *is_osdesc; /* new output section for this */ 478 /* input section */ 479 Elf_Data *is_indata; /* input sections raw data */ 480 Is_desc *is_symshndx; /* related SHT_SYM_SHNDX section */ 481 Word is_scnndx; /* original section index in file */ 482 Word is_txtndx; /* Index for section. Used to decide */ 483 /* where to insert section when */ 484 /* reordering sections */ 485 Word is_ident; /* preserved IDENT used for ordered */ 486 /* sections. */ 487 uint_t is_namehash; /* hash on section name */ 488 Half is_key; /* Used for SHF_ORDERED */ 489 Half is_flags; /* Various flags */ 490 }; 491 492 #define FLG_IS_ORDERED 0x0001 /* This is a SHF_ORDERED section */ 493 #define FLG_IS_KEY 0x0002 /* This is a section pointed by */ 494 /* sh_info of a SHF_ORDERED section */ 495 #define FLG_IS_DISCARD 0x0004 /* section is to be discarded */ 496 #define FLG_IS_RELUPD 0x0008 /* symbol defined here may have moved */ 497 #define FLG_IS_SECTREF 0x0010 /* section has been referenced */ 498 #define FLG_IS_GDATADEF 0x0020 /* section contains global data sym */ 499 500 501 /* 502 * Map file and output file processing structures 503 */ 504 struct os_desc { /* Output section descriptor */ 505 const char *os_name; /* the section name */ 506 Elf_Scn *os_scn; /* the elf section descriptor */ 507 Shdr *os_shdr; /* the elf section header */ 508 Os_desc *os_relosdesc; /* the output relocation section */ 509 List os_relisdescs; /* reloc input section descriptors */ 510 /* for this output section */ 511 List os_isdescs; /* list of input sections in output */ 512 Sort_desc *os_sort; /* used for sorting sections */ 513 Sg_desc *os_sgdesc; /* segment os_desc is placed on */ 514 Elf_Data *os_outdata; /* output sections raw data */ 515 List os_comdats; /* list of COMDAT sections present */ 516 /* in current output section */ 517 Word os_scnsymndx; /* index in output symtab of section */ 518 /* symbol for this section */ 519 Word os_txtndx; /* Index for section. Used to decide */ 520 /* where to insert section when */ 521 /* reordering sections */ 522 Xword os_szoutrels; /* size of output relocation section */ 523 uint_t os_namehash; /* hash on section name */ 524 uchar_t os_flags; /* various flags */ 525 }; 526 527 #define FLG_OS_ORDER_KEY 0x01 /* include a sort key section */ 528 #define FLG_OS_OUTREL 0x02 /* output rel against this section */ 529 #define FLG_OS_SECTREF 0x04 /* isps are not affected by -zignore */ 530 531 /* 532 * For sorting sections. 533 */ 534 struct sort_desc { 535 Is_desc **st_order; 536 Word st_ordercnt; 537 Is_desc **st_before; 538 Word st_beforecnt; 539 Is_desc **st_after; 540 Word st_aftercnt; 541 }; 542 543 struct sg_desc { /* output segment descriptor */ 544 Phdr sg_phdr; /* segment header for output file */ 545 const char *sg_name; /* segment name */ 546 Xword sg_round; /* data rounding required (mapfile) */ 547 Xword sg_length; /* maximum segment length; if 0 */ 548 /* segment is not specified */ 549 List sg_osdescs; /* list of output section descriptors */ 550 List sg_secorder; /* List of section ordering */ 551 /* which specify section */ 552 /* ordering for the segment */ 553 Half sg_flags; 554 Sym_desc *sg_sizesym; /* size symbol for this segment */ 555 Xword sg_addralign; /* LCM of sh_addralign */ 556 Elf_Scn *sg_fscn; /* the SCN of the first section. */ 557 }; 558 559 560 #define FLG_SG_VADDR 0x0001 /* vaddr segment attribute set */ 561 #define FLG_SG_PADDR 0x0002 /* paddr segment attribute set */ 562 #define FLG_SG_LENGTH 0x0004 /* length segment attribute set */ 563 #define FLG_SG_ALIGN 0x0008 /* align segment attribute set */ 564 #define FLG_SG_ROUND 0x0010 /* round segment attribute set */ 565 #define FLG_SG_FLAGS 0x0020 /* flags segment attribute set */ 566 #define FLG_SG_TYPE 0x0040 /* type segment attribute set */ 567 #define FLG_SG_ORDER 0x0080 /* has ordering been turned on for */ 568 /* this segment. */ 569 /* i.e. ?[O] option in mapfile */ 570 #define FLG_SG_NOHDR 0x0100 /* don't map ELF or phdrs into */ 571 /* this segment */ 572 #define FLG_SG_EMPTY 0x0200 /* an empty segment specification */ 573 /* no input sections will be */ 574 /* associated to this section */ 575 #define FLG_SG_KEY 0x0400 /* include a key section */ 576 #define FLG_SG_DISABLED 0x0800 /* this segment is disabled */ 577 578 struct sec_order { 579 const char *sco_secname; /* section name to be ordered */ 580 Word sco_index; /* ordering index for section */ 581 Half sco_flags; 582 }; 583 584 #define FLG_SGO_USED 0x0001 /* was ordering used? */ 585 586 struct ent_desc { /* input section entrance criteria */ 587 List ec_files; /* files from which to accept */ 588 /* sections */ 589 const char *ec_name; /* name to match (NULL if none) */ 590 Word ec_type; /* section type */ 591 Half ec_attrmask; /* section attribute mask (AWX) */ 592 Half ec_attrbits; /* sections attribute bits */ 593 Sg_desc *ec_segment; /* output segment to enter if matched */ 594 Word ec_ndx; /* index to determine where section */ 595 /* meeting this criteria should */ 596 /* inserted. Used for reordering */ 597 /* of sections. */ 598 Half ec_flags; 599 }; 600 601 #define FLG_EC_USED 0x0001 /* entrance criteria met? */ 602 603 /* 604 * Move supplementary structures 605 * Sorted by symbol local/global and then by name. 606 */ 607 typedef struct psym_info { 608 Sym_desc *psym_symd; /* partially initialized symbol */ 609 Word psym_num; /* number of move entires */ 610 Half psym_flag; /* various flag */ 611 List psym_mvs; /* the list of move entries */ 612 } Psym_info; 613 614 #define FLG_PSYM_OVERLAP 0x01 /* Overlapping */ 615 616 /* 617 * One structure is allocated for a move entry. 618 */ 619 typedef struct mv_itm { 620 Xword mv_start; /* start position */ 621 Xword mv_length; /* The length of initialization */ 622 Half mv_flag; /* various flags */ 623 Is_desc *mv_isp; /* input desc. this entry is from */ 624 Move *mv_ientry; /* Input Move_entry */ 625 Word mv_oidx; /* Output Move_entry index */ 626 } Mv_itm; 627 628 #define FLG_MV_OUTSECT 0x01 /* Will be in move section */ 629 630 /* 631 * Define a move descripter used within relocation structures. 632 */ 633 struct mv_desc { 634 Move *mvd_move; 635 Sym_desc *mvd_sym; 636 }; 637 638 struct sym_desc { 639 List sd_GOTndxs; /* list of associated GOT entries */ 640 Sym *sd_sym; /* pointer to symbol table entry */ 641 Sym *sd_osym; /* copy of the original symbol entry */ 642 /* Used only for local partial */ 643 Psym_info *sd_psyminfo; /* If this is partial symbol, this */ 644 /* field holds the pointer to */ 645 /* parsym_info */ 646 const char *sd_name; /* symbols name */ 647 Ifl_desc *sd_file; /* file where symbol is taken */ 648 Is_desc *sd_isc; /* input section of symbol definition */ 649 Sym_aux *sd_aux; /* auxiliary global symbol info. */ 650 Word sd_symndx; /* index in output symbol table */ 651 Word sd_shndx; /* sect. index sym is associated w/ */ 652 Word sd_flags; /* state flags */ 653 Half sd_flags1; /* more symbol flags */ 654 Half sd_ref; /* reference definition of symbol */ 655 }; 656 657 /* 658 * The auxiliary symbol descriptor contains the additional information (beyond 659 * the symbol descriptor) required to process global symbols. These symbols are 660 * accessed via an internal symbol hash table where locality of reference is 661 * important for performance. 662 */ 663 struct sym_aux { 664 List sa_dfiles; /* files where symbol is defined */ 665 Sym sa_sym; /* copy of symtab entry */ 666 const char *sa_vfile; /* first unavailable definition */ 667 Ifl_desc *sa_bindto; /* symbol to bind to - for translator */ 668 const char *sa_rfile; /* file with first symbol referenced */ 669 Word sa_hash; /* the pure hash value of symbol */ 670 Word sa_PLTndx; /* index into PLT for symbol */ 671 Word sa_PLTGOTndx; /* GOT entry indx for PLT indirection */ 672 Word sa_linkndx; /* index of associated symbol */ 673 Half sa_symspec; /* special symbol ids */ 674 Half sa_overndx; /* output file versioning index */ 675 Half sa_dverndx; /* dependency versioning index */ 676 }; 677 678 679 /* 680 * Nodes used to track symbols in the global AVL symbol dictionary. 681 */ 682 struct sym_avlnode { 683 avl_node_t sav_node; /* AVL node */ 684 Word sav_hash; /* symbol hash value */ 685 const char *sav_name; /* symbol name */ 686 Sym_desc *sav_symdesc; /* SymDesc entry */ 687 }; 688 689 /* 690 * These are the ids for processing of `Special symbols'. They are used 691 * to set the sym->sd_aux->sa_symspec field. 692 */ 693 #define SDAUX_ID_ETEXT 1 /* etext && _etext symbol */ 694 #define SDAUX_ID_EDATA 2 /* edata && _edata symbol */ 695 #define SDAUX_ID_END 3 /* end, _end, && _END_ symbol */ 696 #define SDAUX_ID_DYN 4 /* DYNAMIC && _DYNAMIC symbol */ 697 #define SDAUX_ID_PLT 5 /* _PROCEDURE_LINKAGE_TABLE_ symbol */ 698 #define SDAUX_ID_GOT 6 /* _GLOBAL_OFFSET_TABLE_ symbol */ 699 #define SDAUX_ID_START 7 /* START_ && _START_ symbol */ 700 701 /* 702 * Flags for sym_desc.sd_flags 703 */ 704 #define FLG_SY_MVTOCOMM 0x00000001 /* assign symbol to common (.bss) */ 705 /* this is a result of a */ 706 /* copy reloc against sym */ 707 #define FLG_SY_GLOBREF 0x00000002 /* a global reference has been seen */ 708 #define FLG_SY_WEAKDEF 0x00000004 /* a weak definition has been used */ 709 #define FLG_SY_CLEAN 0x00000008 /* `Sym' entry points to original */ 710 /* input file (read-only). */ 711 #define FLG_SY_UPREQD 0x00000010 /* symbol value update is required, */ 712 /* either it's used as an entry */ 713 /* point or for relocation, but */ 714 /* it must be updated even if */ 715 /* the -s flag is in effect */ 716 #define FLG_SY_NOTAVAIL 0x00000020 /* symbol is not available to the */ 717 /* application either because it */ 718 /* originates from an implicitly */ 719 /* referenced shared object, or */ 720 /* because it is not part of a */ 721 /* specified version. */ 722 #define FLG_SY_REDUCED 0x00000040 /* a global is reduced to local */ 723 #define FLG_SY_VERSPROM 0x00000080 /* version definition has been */ 724 /* promoted to output file */ 725 #define FLG_SY_PROT 0x00000100 /* stv_protected visibility seen */ 726 727 #define FLG_SY_MAPREF 0x00000200 /* symbol reference generated by user */ 728 /* from mapfile */ 729 #define FLG_SY_REFRSD 0x00000400 /* symbols sd_ref has been raised */ 730 /* due to a copy-relocs */ 731 /* weak-strong pairing */ 732 733 #define FLG_SY_INVALID 0x00001000 /* unwanted/erroneous symbol */ 734 #define FLG_SY_SMGOT 0x00002000 /* small got index assigned to symbol */ 735 /* sparc only */ 736 #define FLG_SY_PARENT 0x00004000 /* symbol to be found in parent */ 737 /* only used with direct bindings */ 738 #define FLG_SY_LAZYLD 0x00008000 /* symbol to cause lazyloading of */ 739 /* parent object */ 740 #define FLG_SY_ISDISC 0x00010000 /* symbol is a member of a DISCARDED */ 741 /* section (COMDAT) */ 742 #define FLG_SY_PAREXPN 0x00020000 /* partially init. symbol to be */ 743 /* expanded */ 744 #define FLG_SY_PLTPAD 0x00040000 /* pltpadding has been allocated for */ 745 /* this symbol */ 746 #define FLG_SY_REGSYM 0x00080000 /* REGISTER symbol (sparc only) */ 747 #define FLG_SY_SOFOUND 0x00100000 /* compared against an SO definition */ 748 #define FLG_SY_EXTERN 0x00200000 /* symbol is external, allows -zdefs */ 749 /* error suppression */ 750 #define FLG_SY_MAPUSED 0x00400000 /* mapfile symbol used (occurred */ 751 /* within a relocatable object) */ 752 #define FLG_SY_COMMEXP 0x00800000 /* COMMON symbol which has been */ 753 /* allocated */ 754 #define FLG_SY_CMDREF 0x01000000 /* symbol was referenced from the */ 755 /* command line. (ld -u <>, */ 756 /* ld -zrtldinfo=<>, ...) */ 757 #define FLG_SY_SPECSEC 0x02000000 /* section index is reserved value */ 758 /* ABS, COMMON, ... */ 759 #define FLG_SY_TENTSYM 0x04000000 /* tentative symbol */ 760 #define FLG_SY_VISIBLE 0x08000000 /* symbols visibility determined */ 761 #define FLG_SY_STDFLTR 0x10000000 /* symbol is a standard filter */ 762 #define FLG_SY_AUXFLTR 0x20000000 /* symbol is an auxiliary filter */ 763 764 /* 765 * Sym_desc.sd_flags1 766 */ 767 #define FLG_SY1_GLOB 0x00000001 /* global symbol, remain global */ 768 #define FLG_SY1_PROT 0x00000002 /* global symbol, reduce to protected */ 769 #define FLG_SY1_LOCL 0x00000004 /* global symbol, reduce to local */ 770 #define FLG_SY1_DIR 0x00000008 /* global symbol, direct bindings */ 771 #define FLG_SY1_NDIR 0x00000010 /* global symbol, nondirect bindings */ 772 #define FLG_SY1_ELIM 0x00000020 /* global symbol, eliminate */ 773 #define FLG_SY1_IGNORE 0x00000040 /* symbol should be ignored */ 774 775 #define MSK_SY1_DEFINED (FLG_SY1_GLOB | FLG_SY1_PROT | FLG_SY1_LOCL) 776 /* The above mask indicates that */ 777 /* a symbol has been explicitly */ 778 /* scoped, and therefore is not */ 779 /* a candidate for auto-reduction */ 780 781 /* 782 * create a mask for (Sym.St_other & visibility) since the 783 * gABI does not yet define a ELF*_ST_OTHER macro. 784 */ 785 #define MSK_SYM_VISIBILITY 0x03 786 787 /* 788 * Structure to manage the shared object definition lists. There are two lists 789 * that use this structure: 790 * 791 * o ofl_soneed; maintain the list of implicitly required dependencies 792 * (ie. shared objects needed by other shared objects). These definitions 793 * may include RPATH's required to locate the dependencies, and any 794 * version requirements. 795 * 796 * o ofl_socntl; maintains the shared object control definitions. These are 797 * provided by the user (via a mapfile) and are used to indicate any 798 * SONAME translations and verion control requirements. 799 */ 800 struct sdf_desc { 801 const char *sdf_name; /* the shared objects file name */ 802 const char *sdf_soname; /* the shared objects SONAME */ 803 char *sdf_rpath; /* library search path DT_RPATH */ 804 const char *sdf_rfile; /* referencing file for diagnostics */ 805 Ifl_desc *sdf_file; /* the final input file descriptor */ 806 List sdf_vers; /* list of versions that are required */ 807 /* from this object */ 808 List sdf_verneed; /* list of VERNEEDS to create for */ 809 /* this object (via SPECVERS or */ 810 /* ADDVERS) */ 811 Word sdf_flags; 812 }; 813 814 #define FLG_SDF_SONAME 0x02 /* An alternative SONAME is supplied */ 815 #define FLG_SDF_SELECT 0x04 /* version control selection required */ 816 #define FLG_SDF_VERIFY 0x08 /* version definition verification */ 817 /* required */ 818 #define FLG_SDF_SPECVER 0x10 /* specify VERNEEDS */ 819 #define FLG_SDF_ADDVER 0x20 /* add VERNEED references */ 820 821 /* 822 * Structure to manage shared object version usage requirements. 823 */ 824 struct sdv_desc { 825 const char *sdv_name; /* version name */ 826 const char *sdv_ref; /* versions reference */ 827 Word sdv_flags; /* flags */ 828 }; 829 830 #define FLG_SDV_MATCHED 0x01 /* VERDEF found and matched */ 831 832 /* 833 * Structures to manage versioning information. Two versioning structures are 834 * defined: 835 * 836 * o a version descriptor maintains a linked list of versions and their 837 * associated dependencies. This is used to build the version definitions 838 * for an image being created (see map_symbol), and to determine the 839 * version dependency graph for any input files that are versioned. 840 * 841 * o a version index array contains each version of an input file that is 842 * being processed. It informs us which versions are available for 843 * binding, and is used to generate any version dependency information. 844 */ 845 struct ver_desc { 846 const char *vd_name; /* version name */ 847 Word vd_hash; /* hash value of name */ 848 Ifl_desc *vd_file; /* file that defined version */ 849 Half vd_ndx; /* coordinates with symbol index */ 850 Half vd_flags; /* version information */ 851 List vd_deps; /* version dependencies */ 852 Ver_desc *vd_ref; /* dependency's first reference */ 853 }; 854 855 struct ver_index { 856 const char *vi_name; /* dependency version name */ 857 Half vi_flags; /* communicates availability */ 858 Ver_desc *vi_desc; /* cross reference to descriptor */ 859 }; 860 861 /* 862 * Define any internal version descriptor flags ([vd|vi]_flags). Note that the 863 * first byte is reserved for user visible flags (refer VER_FLG's in link.h). 864 */ 865 #define MSK_VER_USER 0x0f /* mask for user visible flags */ 866 867 #define FLG_VER_AVAIL 0x10 /* version is available for binding */ 868 #define FLG_VER_REFER 0x20 /* version has been referenced */ 869 #define FLG_VER_SELECT 0x40 /* version has been selected by user */ 870 #define FLG_VER_CYCLIC 0x80 /* a member of cyclic dependency */ 871 872 873 /* 874 * isalist(1) descriptor - used to break an isalist string into its component 875 * options. 876 */ 877 struct isa_opt { 878 char *isa_name; /* individual isa option name */ 879 size_t isa_namesz; /* and associated size */ 880 }; 881 882 struct isa_desc { 883 char *isa_list; /* sysinfo(SI_ISALIST) list */ 884 size_t isa_listsz; /* and associated size */ 885 Isa_opt *isa_opt; /* table of individual isa options */ 886 size_t isa_optno; /* and associated number */ 887 }; 888 889 /* 890 * uname(2) descriptor - used to break a utsname structure into its component 891 * options (at least those that we're interested in). 892 */ 893 struct uts_desc { 894 char *uts_osname; /* operating system name */ 895 size_t uts_osnamesz; /* and associated size */ 896 char *uts_osrel; /* operating system release */ 897 size_t uts_osrelsz; /* and associated size */ 898 }; 899 900 901 /* 902 * SHT_GROUP descriptor - used to track group sections at the global 903 * level to resolve conflicts/determine which to keep. 904 */ 905 struct group_desc { 906 const char *gd_gsectname; /* group section name */ 907 const char *gd_symname; /* symbol name */ 908 Word *gd_data; /* data for group section */ 909 size_t gd_scnndx; /* group section index */ 910 size_t gd_cnt; /* number of entries in group data */ 911 Word gd_flags; 912 }; 913 914 #define GRP_FLG_DISCARD 0x0001 /* group is to be discarded */ 915 916 /* 917 * Indexes into the ld_support_funcs[] table. 918 */ 919 typedef enum { 920 LDS_VERSION = 0, 921 LDS_INPUT_DONE, 922 LDS_START, 923 LDS_ATEXIT, 924 LDS_FILE, 925 LDS_INP_SECTION, 926 LDS_SECTION, 927 LDS_NUM 928 } Support_ndx; 929 930 931 /* 932 * Structure to manage archive member caching. Each archive has an archive 933 * descriptor (Ar_desc) associated with it. This contains pointers to the 934 * archive symbol table (obtained by elf_getarsyms(3e)) and an auxiliary 935 * structure (Ar_uax[]) that parallels this symbol table. The member element 936 * of this auxiliary table indicates whether the archive member associated with 937 * the symbol offset has already been extracted (AREXTRACTED) or partially 938 * processed (refer process_member()). 939 */ 940 typedef struct ar_mem { 941 Elf *am_elf; /* elf descriptor for this member */ 942 char *am_name; /* members name */ 943 char *am_path; /* path (ie. lib(foo.o)) */ 944 Sym *am_syms; /* start of global symbols */ 945 char *am_strs; /* associated string table start */ 946 Xword am_symn; /* no. of global symbols */ 947 } Ar_mem; 948 949 typedef struct ar_aux { 950 Sym_desc *au_syms; /* internal symbol descriptor */ 951 Ar_mem *au_mem; /* associated member */ 952 } Ar_aux; 953 954 #define FLG_ARMEM_PROC (Ar_mem *)-1 955 956 typedef struct ar_desc { 957 const char *ad_name; /* archive file name */ 958 Elf *ad_elf; /* elf descriptor for the archive */ 959 Elf_Arsym *ad_start; /* archive symbol table start */ 960 Ar_aux *ad_aux; /* auxiliary symbol information */ 961 dev_t ad_stdev; /* device id and inode number for */ 962 ino_t ad_stino; /* multiple inclusion checks */ 963 Word ad_flags; /* archive specific cmd line flags */ 964 } Ar_desc; 965 966 /* 967 * Define any archive descriptor flags. NOTE, make sure they do not clash with 968 * any output file descriptor archive extraction flags, as these are saved in 969 * the same entry (see MSK_OF1_ARCHIVE). 970 */ 971 #define FLG_ARD_EXTRACT 0x00010000 /* archive member has been extracted */ 972 973 974 /* 975 * Function Declarations 976 */ 977 extern char *add_string(char *, char *); 978 extern uintptr_t create_outfile(Ofl_desc *); 979 extern Elf64_Off _elf_getxoff(Elf_Data *); 980 extern uintptr_t ent_setup(Ofl_desc *, Xword); 981 extern void eprintf(Error, const char *, ...); 982 extern uintptr_t finish_libs(Ofl_desc *); 983 extern int ld_main(int, char **); 984 extern uintptr_t ld_support_loadso(const char *); 985 extern void lds_start(const char *, const Half, const char *); 986 extern void lds_atexit(int); 987 extern void lds_file(const char *, const Elf_Kind, 988 int flags, Elf *); 989 extern uintptr_t lds_input_section(const char *, Shdr **, Word, 990 const char *, Elf_Scn *, Elf *, Ofl_desc *); 991 extern void lds_input_done(void); 992 extern void lds_section(const char *, Shdr *, Word, Elf_Data *, 993 Elf *); 994 extern Listnode *list_appendc(List *, const void *); 995 extern Listnode *list_insertc(List *, const void *, Listnode *); 996 extern Listnode *list_prependc(List *, const void *); 997 extern Listnode *list_where(List *, Word); 998 extern uintptr_t make_sections(Ofl_desc *); 999 extern void ofl_cleanup(Ofl_desc *); 1000 extern uintptr_t open_outfile(Ofl_desc *); 1001 extern Ifl_desc *process_open(const char *, size_t, int, Ofl_desc *, 1002 Half, Rej_desc *); 1003 extern uintptr_t reloc_init(Ofl_desc *); 1004 extern uintptr_t reloc_process(Ofl_desc *); 1005 extern Sdf_desc *sdf_find(const char *, List *); 1006 extern Sdf_desc *sdf_add(const char *, List *); 1007 extern void sec_validate(Ofl_desc *); 1008 extern uintptr_t sunwmove_preprocess(Ofl_desc *); 1009 extern Sym_desc *sym_add_u(const char *, Ofl_desc *); 1010 extern Sym_desc *sym_enter(const char *, Sym *, Word, Ifl_desc *, 1011 Ofl_desc *, Word, Word, Word, Half, 1012 avl_index_t *); 1013 extern Sym_desc *sym_find(const char *, Word, avl_index_t *, 1014 Ofl_desc *); 1015 extern uintptr_t sym_validate(Ofl_desc *); 1016 extern uintptr_t update_outfile(Ofl_desc *); 1017 extern Ver_desc *vers_base(Ofl_desc *); 1018 extern uintptr_t vers_check_defs(Ofl_desc *); 1019 extern Ver_desc *vers_desc(const char *, Word, List *); 1020 extern Ver_desc *vers_find(const char *, Word, List *); 1021 1022 #ifdef __cplusplus 1023 } 1024 #endif 1025 1026 #endif /* _LIBLD_H */ 1027