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 2008 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30#ifndef _SYS_LINK_H 31#define _SYS_LINK_H 32 33#pragma ident "@(#)link.h 1.80 08/03/18 SMI" 34 35#ifndef _ASM 36#include <sys/types.h> 37 38#include "elftypes.h" /* In lieu of Solaris <sys/types.h> */ 39 40#endif 41 42#ifdef __cplusplus 43extern "C" { 44#endif 45 46/* 47 * Communication structures for the runtime linker. 48 */ 49 50/* 51 * The following data structure provides a self-identifying union consisting 52 * of a tag from a known list and a value. 53 */ 54#ifndef _ASM 55typedef struct { 56 Elf32_Sword d_tag; /* how to interpret value */ 57 union { 58 Elf32_Word d_val; 59 Elf32_Addr d_ptr; 60 Elf32_Off d_off; 61 } d_un; 62} Elf32_Dyn; 63 64#if defined(_LP64) || defined(_LONGLONG_TYPE) 65typedef struct { 66 Elf64_Xword d_tag; /* how to interpret value */ 67 union { 68 Elf64_Xword d_val; 69 Elf64_Addr d_ptr; 70 } d_un; 71} Elf64_Dyn; 72#endif /* defined(_LP64) || defined(_LONGLONG_TYPE) */ 73#endif /* _ASM */ 74 75/* 76 * Tag values 77 */ 78#define DT_NULL 0 /* last entry in list */ 79#define DT_NEEDED 1 /* a needed object */ 80#define DT_PLTRELSZ 2 /* size of relocations for the PLT */ 81#define DT_PLTGOT 3 /* addresses used by procedure linkage table */ 82#define DT_HASH 4 /* hash table */ 83#define DT_STRTAB 5 /* string table */ 84#define DT_SYMTAB 6 /* symbol table */ 85#define DT_RELA 7 /* addr of relocation entries */ 86#define DT_RELASZ 8 /* size of relocation table */ 87#define DT_RELAENT 9 /* base size of relocation entry */ 88#define DT_STRSZ 10 /* size of string table */ 89#define DT_SYMENT 11 /* size of symbol table entry */ 90#define DT_INIT 12 /* _init addr */ 91#define DT_FINI 13 /* _fini addr */ 92#define DT_SONAME 14 /* name of this shared object */ 93#define DT_RPATH 15 /* run-time search path */ 94#define DT_SYMBOLIC 16 /* shared object linked -Bsymbolic */ 95#define DT_REL 17 /* addr of relocation entries */ 96#define DT_RELSZ 18 /* size of relocation table */ 97#define DT_RELENT 19 /* base size of relocation entry */ 98#define DT_PLTREL 20 /* relocation type for PLT entry */ 99#define DT_DEBUG 21 /* pointer to r_debug structure */ 100#define DT_TEXTREL 22 /* text relocations remain for this object */ 101#define DT_JMPREL 23 /* pointer to the PLT relocation entries */ 102#define DT_BIND_NOW 24 /* perform all relocations at load of object */ 103#define DT_INIT_ARRAY 25 /* pointer to .initarray */ 104#define DT_FINI_ARRAY 26 /* pointer to .finiarray */ 105#define DT_INIT_ARRAYSZ 27 /* size of .initarray */ 106#define DT_FINI_ARRAYSZ 28 /* size of .finiarray */ 107#define DT_RUNPATH 29 /* run-time search path */ 108#define DT_FLAGS 30 /* state flags - see DF_* */ 109 110/* 111 * DT_* encoding rules: The value of each dynamic tag determines the 112 * interpretation of the d_un union. This convention provides for simpler 113 * interpretation of dynamic tags by external tools. A tag whose value 114 * is an even number indicates a dynamic section entry that uses d_ptr. 115 * A tag whose value is an odd number indicates a dynamic section entry 116 * that uses d_val, or that uses neither d_ptr nor d_val. 117 * 118 * There are exceptions to the above rule: 119 * - Tags with values that are less than DT_ENCODING. 120 * - Tags with values that fall between DT_LOOS and DT_SUNW_ENCODING 121 * - Tags with values that fall between DT_HIOS and DT_LOPROC 122 * 123 * Third party tools must handle these exception ranges explicitly 124 * on an item by item basis. 125 */ 126#define DT_ENCODING 32 /* positive tag DT_* encoding rules */ 127 /* start after this */ 128#define DT_PREINIT_ARRAY 32 /* pointer to .preinitarray segment */ 129#define DT_PREINIT_ARRAYSZ 33 /* size of .preinitarray segment */ 130 131#define DT_MAXPOSTAGS 34 /* number of positive tags */ 132 133/* 134 * DT_* encoding rules do not apply between DT_LOOS and DT_SUNW_ENCODING 135 */ 136#define DT_LOOS 0x6000000d /* OS specific range */ 137#define DT_SUNW_AUXILIARY 0x6000000d /* symbol auxiliary name */ 138#define DT_SUNW_RTLDINF 0x6000000e /* ld.so.1 info (private) */ 139#define DT_SUNW_FILTER 0x6000000f /* symbol filter name */ 140#define DT_SUNW_CAP 0x60000010 /* hardware/software */ 141 /* capabilities */ 142#define DT_SUNW_SYMTAB 0x60000011 /* symtab with local fcn */ 143 /* symbols immediately */ 144 /* preceding DT_SYMTAB */ 145#define DT_SUNW_SYMSZ 0x60000012 /* Size of SUNW_SYMTAB table */ 146 147/* 148 * DT_* encoding rules apply between DT_SUNW_ENCODING and DT_HIOS 149 */ 150#define DT_SUNW_ENCODING 0x60000013 /* DT_* encoding rules resume */ 151 /* after this */ 152#define DT_SUNW_SORTENT 0x60000013 /* sizeof [SYM|TLS]SORT entrt */ 153#define DT_SUNW_SYMSORT 0x60000014 /* sym indices sorted by addr */ 154#define DT_SUNW_SYMSORTSZ 0x60000015 /* size of SUNW_SYMSORT */ 155#define DT_SUNW_TLSSORT 0x60000016 /* tls sym ndx sort by offset */ 156#define DT_SUNW_TLSSORTSZ 0x60000017 /* size of SUNW_TLSSORT */ 157 158#define DT_SUNW_STRPAD 0x60000019 /* # of unused bytes at the */ 159 /* end of dynstr */ 160#define DT_SUNW_LDMACH 0x6000001b /* EM_ machine code of linker */ 161 /* that produced object */ 162 163/* 164 * DT_* encoding rules do not apply between DT_HIOS and DT_LOPROC 165 */ 166#define DT_HIOS 0x6ffff000 167 168/* 169 * The following values have been deprecated and remain here to allow 170 * compatibility with older binaries. 171 */ 172#define DT_DEPRECATED_SPARC_REGISTER 0x7000001 173 174/* 175 * DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the 176 * Dyn.d_un.d_val field of the Elf*_Dyn structure. 177 */ 178#define DT_VALRNGLO 0x6ffffd00 179#define DT_CHECKSUM 0x6ffffdf8 /* elf checksum */ 180#define DT_PLTPADSZ 0x6ffffdf9 /* pltpadding size */ 181#define DT_MOVEENT 0x6ffffdfa /* move table entry size */ 182#define DT_MOVESZ 0x6ffffdfb /* move table size */ 183#define DT_FEATURE_1 0x6ffffdfc /* feature holder */ 184#define DT_POSFLAG_1 0x6ffffdfd /* flags for DT_* entries, effecting */ 185 /* the following DT_* entry. */ 186 /* See DF_P1_* definitions */ 187#define DT_SYMINSZ 0x6ffffdfe /* syminfo table size (in bytes) */ 188#define DT_SYMINENT 0x6ffffdff /* syminfo entry size (in bytes) */ 189#define DT_VALRNGHI 0x6ffffdff 190 191/* 192 * DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the 193 * Dyn.d_un.d_ptr field of the Elf*_Dyn structure. 194 * 195 * If any adjustment is made to the ELF object after it has been 196 * built, these entries will need to be adjusted. 197 */ 198#define DT_ADDRRNGLO 0x6ffffe00 199#define DT_CONFIG 0x6ffffefa /* configuration information */ 200#define DT_DEPAUDIT 0x6ffffefb /* dependency auditing */ 201#define DT_AUDIT 0x6ffffefc /* object auditing */ 202#define DT_PLTPAD 0x6ffffefd /* pltpadding (sparcv9) */ 203#define DT_MOVETAB 0x6ffffefe /* move table */ 204#define DT_SYMINFO 0x6ffffeff /* syminfo table */ 205#define DT_ADDRRNGHI 0x6ffffeff 206 207/* 208 * The following DT_* entries should have been assigned within one of the 209 * DT_* ranges, but existed before such ranges had been established. 210 */ 211#define DT_VERSYM 0x6ffffff0 /* version symbol table - unused by */ 212 /* Solaris (see libld/update.c) */ 213 214#define DT_RELACOUNT 0x6ffffff9 /* number of RELATIVE relocations */ 215#define DT_RELCOUNT 0x6ffffffa /* number of RELATIVE relocations */ 216#define DT_FLAGS_1 0x6ffffffb /* state flags - see DF_1_* defs */ 217#define DT_VERDEF 0x6ffffffc /* version definition table and */ 218#define DT_VERDEFNUM 0x6ffffffd /* associated no. of entries */ 219#define DT_VERNEED 0x6ffffffe /* version needed table and */ 220#define DT_VERNEEDNUM 0x6fffffff /* associated no. of entries */ 221 222/* 223 * DT_* entries between DT_HIPROC and DT_LOPROC are reserved for processor 224 * specific semantics. 225 * 226 * DT_* encoding rules apply to all tag values larger than DT_LOPROC. 227 */ 228#define DT_LOPROC 0x70000000 /* processor specific range */ 229#define DT_AUXILIARY 0x7ffffffd /* shared library auxiliary name */ 230#define DT_USED 0x7ffffffe /* ignored - same as needed */ 231#define DT_FILTER 0x7fffffff /* shared library filter name */ 232#define DT_HIPROC 0x7fffffff 233 234 235/* 236 * Values for DT_FLAGS 237 */ 238#define DF_ORIGIN 0x00000001 /* ORIGIN processing required */ 239#define DF_SYMBOLIC 0x00000002 /* symbolic bindings in effect */ 240#define DF_TEXTREL 0x00000004 /* text relocations remain */ 241#define DF_BIND_NOW 0x00000008 /* process all relocations */ 242#define DF_STATIC_TLS 0x00000010 /* obj. contains static TLS refs */ 243 244/* 245 * Values for the DT_POSFLAG_1 .dynamic entry. 246 * These values only affect the following DT_* entry. 247 */ 248#define DF_P1_LAZYLOAD 0x00000001 /* following object is to be */ 249 /* lazy loaded */ 250#define DF_P1_GROUPPERM 0x00000002 /* following object's symbols are */ 251 /* not available for general */ 252 /* symbol bindings. */ 253/* 254 * Values for the DT_FLAGS_1 .dynamic entry. 255 */ 256#define DF_1_NOW 0x00000001 /* set RTLD_NOW for this object */ 257#define DF_1_GLOBAL 0x00000002 /* set RTLD_GLOBAL for this object */ 258#define DF_1_GROUP 0x00000004 /* set RTLD_GROUP for this object */ 259#define DF_1_NODELETE 0x00000008 /* set RTLD_NODELETE for this object */ 260#define DF_1_LOADFLTR 0x00000010 /* trigger filtee loading at runtime */ 261#define DF_1_INITFIRST 0x00000020 /* set RTLD_INITFIRST for this object */ 262#define DF_1_NOOPEN 0x00000040 /* set RTLD_NOOPEN for this object */ 263#define DF_1_ORIGIN 0x00000080 /* ORIGIN processing required */ 264#define DF_1_DIRECT 0x00000100 /* direct binding enabled */ 265#define DF_1_TRANS 0x00000200 266#define DF_1_INTERPOSE 0x00000400 /* object is an interposer */ 267#define DF_1_NODEFLIB 0x00000800 /* ignore default library search path */ 268#define DF_1_NODUMP 0x00001000 /* object can't be dldump(3x)'ed */ 269#define DF_1_CONFALT 0x00002000 /* configuration alternative created */ 270#define DF_1_ENDFILTEE 0x00004000 /* filtee terminates filters search */ 271#define DF_1_DISPRELDNE 0x00008000 /* disp reloc applied at build time */ 272#define DF_1_DISPRELPND 0x00010000 /* disp reloc applied at run-time */ 273#define DF_1_NODIRECT 0x00020000 /* object contains symbols that */ 274 /* cannot be directly bound to */ 275#define DF_1_IGNMULDEF 0x00040000 /* internal: krtld ignore muldefs */ 276#define DF_1_NOKSYMS 0x00080000 /* internal: don't export object's */ 277 /* symbols via /dev/ksyms */ 278#define DF_1_NOHDR 0x00100000 /* mapfile ?N:1st segment mapping */ 279 /* omits ELF & program headers */ 280#define DF_1_EDITED 0x00200000 /* object has been modified since */ 281 /* being built by 'ld' */ 282#define DF_1_NORELOC 0x00400000 /* internal: unrelocated object */ 283#define DF_1_SYMINTPOSE 0x00800000 /* individual symbol interposers */ 284 /* exist */ 285#define DF_1_GLOBAUDIT 0x01000000 /* establish global auditing */ 286#define DF_1_SINGLETON 0x02000000 /* singleton symbols exist */ 287 288/* 289 * Values set to DT_FEATURE_1 tag's d_val. 290 */ 291#define DTF_1_PARINIT 0x00000001 /* partially initialization feature */ 292#define DTF_1_CONFEXP 0x00000002 /* configuration file expected */ 293 294 295/* 296 * Version structures. There are three types of version structure: 297 * 298 * o A definition of the versions within the image itself. 299 * Each version definition is assigned a unique index (starting from 300 * VER_NDX_BGNDEF) which is used to cross-reference symbols associated to 301 * the version. Each version can have one or more dependencies on other 302 * version definitions within the image. The version name, and any 303 * dependency names, are specified in the version definition auxiliary 304 * array. Version definition entries require a version symbol index table. 305 * 306 * o A version requirement on a needed dependency. Each needed entry 307 * specifies the shared object dependency (as specified in DT_NEEDED). 308 * One or more versions required from this dependency are specified in the 309 * version needed auxiliary array. 310 * 311 * o A version symbol index table. Each symbol indexes into this array 312 * to determine its version index. Index values of VER_NDX_BGNDEF or 313 * greater indicate the version definition to which a symbol is associated. 314 * (the size of a symbol index entry is recorded in the sh_info field). 315 */ 316#ifndef _ASM 317 318typedef struct { /* Version Definition Structure. */ 319 Elf32_Half vd_version; /* this structures version revision */ 320 Elf32_Half vd_flags; /* version information */ 321 Elf32_Half vd_ndx; /* version index */ 322 Elf32_Half vd_cnt; /* no. of associated aux entries */ 323 Elf32_Word vd_hash; /* version name hash value */ 324 Elf32_Word vd_aux; /* no. of bytes from start of this */ 325 /* verdef to verdaux array */ 326 Elf32_Word vd_next; /* no. of bytes from start of this */ 327} Elf32_Verdef; /* verdef to next verdef entry */ 328 329typedef struct { /* Verdef Auxiliary Structure. */ 330 Elf32_Word vda_name; /* first element defines the version */ 331 /* name. Additional entries */ 332 /* define dependency names. */ 333 Elf32_Word vda_next; /* no. of bytes from start of this */ 334} Elf32_Verdaux; /* verdaux to next verdaux entry */ 335 336 337typedef struct { /* Version Requirement Structure. */ 338 Elf32_Half vn_version; /* this structures version revision */ 339 Elf32_Half vn_cnt; /* no. of associated aux entries */ 340 Elf32_Word vn_file; /* name of needed dependency (file) */ 341 Elf32_Word vn_aux; /* no. of bytes from start of this */ 342 /* verneed to vernaux array */ 343 Elf32_Word vn_next; /* no. of bytes from start of this */ 344} Elf32_Verneed; /* verneed to next verneed entry */ 345 346typedef struct { /* Verneed Auxiliary Structure. */ 347 Elf32_Word vna_hash; /* version name hash value */ 348 Elf32_Half vna_flags; /* version information */ 349 Elf32_Half vna_other; 350 Elf32_Word vna_name; /* version name */ 351 Elf32_Word vna_next; /* no. of bytes from start of this */ 352} Elf32_Vernaux; /* vernaux to next vernaux entry */ 353 354typedef Elf32_Half Elf32_Versym; /* Version symbol index array */ 355 356typedef struct { 357 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 358 Elf32_Half si_flags; /* per symbol flags */ 359} Elf32_Syminfo; 360 361 362#if defined(_LP64) || defined(_LONGLONG_TYPE) 363typedef struct { 364 Elf64_Half vd_version; /* this structures version revision */ 365 Elf64_Half vd_flags; /* version information */ 366 Elf64_Half vd_ndx; /* version index */ 367 Elf64_Half vd_cnt; /* no. of associated aux entries */ 368 Elf64_Word vd_hash; /* version name hash value */ 369 Elf64_Word vd_aux; /* no. of bytes from start of this */ 370 /* verdef to verdaux array */ 371 Elf64_Word vd_next; /* no. of bytes from start of this */ 372} Elf64_Verdef; /* verdef to next verdef entry */ 373 374typedef struct { 375 Elf64_Word vda_name; /* first element defines the version */ 376 /* name. Additional entries */ 377 /* define dependency names. */ 378 Elf64_Word vda_next; /* no. of bytes from start of this */ 379} Elf64_Verdaux; /* verdaux to next verdaux entry */ 380 381typedef struct { 382 Elf64_Half vn_version; /* this structures version revision */ 383 Elf64_Half vn_cnt; /* no. of associated aux entries */ 384 Elf64_Word vn_file; /* name of needed dependency (file) */ 385 Elf64_Word vn_aux; /* no. of bytes from start of this */ 386 /* verneed to vernaux array */ 387 Elf64_Word vn_next; /* no. of bytes from start of this */ 388} Elf64_Verneed; /* verneed to next verneed entry */ 389 390typedef struct { 391 Elf64_Word vna_hash; /* version name hash value */ 392 Elf64_Half vna_flags; /* version information */ 393 Elf64_Half vna_other; 394 Elf64_Word vna_name; /* version name */ 395 Elf64_Word vna_next; /* no. of bytes from start of this */ 396} Elf64_Vernaux; /* vernaux to next vernaux entry */ 397 398typedef Elf64_Half Elf64_Versym; 399 400typedef struct { 401 Elf64_Half si_boundto; /* direct bindings - symbol bound to */ 402 Elf64_Half si_flags; /* per symbol flags */ 403} Elf64_Syminfo; 404#endif /* defined(_LP64) || defined(_LONGLONG_TYPE) */ 405 406#endif /* _ASM */ 407 408/* 409 * Versym symbol index values. Values greater than VER_NDX_GLOBAL 410 * and less then VER_NDX_LORESERVE associate symbols with user 411 * specified version descriptors. 412 */ 413#define VER_NDX_LOCAL 0 /* symbol is local */ 414#define VER_NDX_GLOBAL 1 /* symbol is global and assigned to */ 415 /* the base version */ 416#define VER_NDX_LORESERVE 0xff00 /* beginning of RESERVED entries */ 417#define VER_NDX_ELIMINATE 0xff01 /* symbol is to be eliminated */ 418 419/* 420 * Verdef and Verneed (via Veraux) flags values. 421 */ 422#define VER_FLG_BASE 0x1 /* version definition of file itself */ 423#define VER_FLG_WEAK 0x2 /* weak version identifier */ 424 425/* 426 * Verdef version values. 427 */ 428#define VER_DEF_NONE 0 /* Ver_def version */ 429#define VER_DEF_CURRENT 1 430#define VER_DEF_NUM 2 431 432/* 433 * Verneed version values. 434 */ 435#define VER_NEED_NONE 0 /* Ver_need version */ 436#define VER_NEED_CURRENT 1 437#define VER_NEED_NUM 2 438 439 440/* 441 * Syminfo flag values 442 */ 443#define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association */ 444 /* to object containing defn. */ 445#define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */ 446#define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */ 447#define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn. should be */ 448 /* lazily-loaded */ 449#define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to */ 450 /* object containing defn. */ 451#define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference */ 452 /* directly bind to this symbol */ 453#define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */ 454#define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */ 455#define SYMINFO_FLG_INTERPOSE 0x0080 /* symbol defines an interposer */ 456 457/* 458 * Syminfo.si_boundto values. 459 */ 460#define SYMINFO_BT_SELF 0xffff /* symbol bound to self */ 461#define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */ 462#define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */ 463#define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */ 464#define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */ 465 466/* 467 * Syminfo version values. 468 */ 469#define SYMINFO_NONE 0 /* Syminfo version */ 470#define SYMINFO_CURRENT 1 471#define SYMINFO_NUM 2 472 473 474/* 475 * Public structure defined and maintained within the runtime linker 476 */ 477#ifndef _ASM 478 479typedef struct link_map Link_map; 480 481struct link_map { 482 unsigned long l_addr; /* address at which object is mapped */ 483 char *l_name; /* full name of loaded object */ 484#ifdef _LP64 485 Elf64_Dyn *l_ld; /* dynamic structure of object */ 486#else 487 Elf32_Dyn *l_ld; /* dynamic structure of object */ 488#endif 489 Link_map *l_next; /* next link object */ 490 Link_map *l_prev; /* previous link object */ 491 char *l_refname; /* filters reference name */ 492}; 493 494#ifdef _SYSCALL32 495typedef struct link_map32 Link_map32; 496 497struct link_map32 { 498 Elf32_Word l_addr; 499 Elf32_Addr l_name; 500 Elf32_Addr l_ld; 501 Elf32_Addr l_next; 502 Elf32_Addr l_prev; 503 Elf32_Addr l_refname; 504}; 505#endif 506 507typedef enum { 508 RT_CONSISTENT, 509 RT_ADD, 510 RT_DELETE 511} r_state_e; 512 513typedef enum { 514 RD_FL_NONE = 0, /* no flags */ 515 RD_FL_ODBG = (1<<0), /* old style debugger present */ 516 RD_FL_DBG = (1<<1) /* debugging enabled */ 517} rd_flags_e; 518 519 520 521/* 522 * Debugging events enabled inside of the runtime linker. To 523 * access these events see the librtld_db interface. 524 */ 525typedef enum { 526 RD_NONE = 0, /* no event */ 527 RD_PREINIT, /* the Initial rendezvous before .init */ 528 RD_POSTINIT, /* the Second rendezvous after .init */ 529 RD_DLACTIVITY, /* a dlopen or dlclose has happened */ 530 RD_DYLD_LOST, /* communication with target dyld was lost */ 531 RD_DYLD_EXIT /* target exited. */ 532} rd_event_e; 533 534struct r_debug { 535 int r_version; /* debugging info version no. */ 536 Link_map *r_map; /* address of link_map */ 537 unsigned long r_brk; /* address of update routine */ 538 r_state_e r_state; 539 unsigned long r_ldbase; /* base addr of ld.so */ 540 Link_map *r_ldsomap; /* address of ld.so.1's link map */ 541 rd_event_e r_rdevent; /* debug event */ 542 rd_flags_e r_flags; /* misc flags. */ 543}; 544 545#ifdef _SYSCALL32 546struct r_debug32 { 547 Elf32_Word r_version; /* debugging info version no. */ 548 Elf32_Addr r_map; /* address of link_map */ 549 Elf32_Word r_brk; /* address of update routine */ 550 r_state_e r_state; 551 Elf32_Word r_ldbase; /* base addr of ld.so */ 552 Elf32_Addr r_ldsomap; /* address of ld.so.1's link map */ 553 rd_event_e r_rdevent; /* debug event */ 554 rd_flags_e r_flags; /* misc flags. */ 555}; 556#endif 557 558 559#define R_DEBUG_VERSION 2 /* current r_debug version */ 560#endif /* _ASM */ 561 562/* 563 * Attribute/value structures used to bootstrap ELF-based dynamic linker. 564 */ 565#ifndef _ASM 566typedef struct { 567 Elf32_Sword eb_tag; /* what this one is */ 568 union { /* possible values */ 569 Elf32_Word eb_val; 570 Elf32_Addr eb_ptr; 571 Elf32_Off eb_off; 572 } eb_un; 573} Elf32_Boot; 574 575#if defined(_LP64) || defined(_LONGLONG_TYPE) 576typedef struct { 577 Elf64_Xword eb_tag; /* what this one is */ 578 union { /* possible values */ 579 Elf64_Xword eb_val; 580 Elf64_Addr eb_ptr; 581 Elf64_Off eb_off; 582 } eb_un; 583} Elf64_Boot; 584#endif /* defined(_LP64) || defined(_LONGLONG_TYPE) */ 585#endif /* _ASM */ 586 587/* 588 * Attributes 589 */ 590#define EB_NULL 0 /* (void) last entry */ 591#define EB_DYNAMIC 1 /* (*) dynamic structure of subject */ 592#define EB_LDSO_BASE 2 /* (caddr_t) base address of ld.so */ 593#define EB_ARGV 3 /* (caddr_t) argument vector */ 594#define EB_ENVP 4 /* (char **) environment strings */ 595#define EB_AUXV 5 /* (auxv_t *) auxiliary vector */ 596#define EB_DEVZERO 6 /* (int) fd for /dev/zero */ 597#define EB_PAGESIZE 7 /* (int) page size */ 598#define EB_MAX 8 /* number of "EBs" */ 599#define EB_MAX_SIZE32 64 /* size in bytes, _ILP32 */ 600#define EB_MAX_SIZE64 128 /* size in bytes, _LP64 */ 601 602 603#ifndef _ASM 604 605#ifdef __STDC__ 606 607/* 608 * Concurrency communication structure for libc callbacks. 609 */ 610extern void _ld_libc(void *); 611#else /* __STDC__ */ 612extern void _ld_libc(); 613#endif /* __STDC__ */ 614 615#pragma unknown_control_flow(_ld_libc) 616#endif /* _ASM */ 617 618#ifdef __cplusplus 619} 620#endif 621 622#endif /* _SYS_LINK_H */ 623