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 2006 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 "%Z%%M% %I% %E% SMI" 34 35 #ifndef _ASM 36 #include <sys/types.h> 37 #include <sys/elftypes.h> 38 #endif 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 /* 45 * Communication structures for the runtime linker. 46 */ 47 48 /* 49 * The following data structure provides a self-identifying union consisting 50 * of a tag from a known list and a value. 51 */ 52 #ifndef _ASM 53 typedef struct { 54 Elf32_Sword d_tag; /* how to interpret value */ 55 union { 56 Elf32_Word d_val; 57 Elf32_Addr d_ptr; 58 Elf32_Off d_off; 59 } d_un; 60 } Elf32_Dyn; 61 62 #if defined(_LP64) || defined(_LONGLONG_TYPE) 63 typedef struct { 64 Elf64_Xword d_tag; /* how to interpret value */ 65 union { 66 Elf64_Xword d_val; 67 Elf64_Addr d_ptr; 68 } d_un; 69 } Elf64_Dyn; 70 #endif /* defined(_LP64) || defined(_LONGLONG_TYPE) */ 71 #endif /* _ASM */ 72 73 /* 74 * Tag values 75 */ 76 #define DT_NULL 0 /* last entry in list */ 77 #define DT_NEEDED 1 /* a needed object */ 78 #define DT_PLTRELSZ 2 /* size of relocations for the PLT */ 79 #define DT_PLTGOT 3 /* addresses used by procedure linkage table */ 80 #define DT_HASH 4 /* hash table */ 81 #define DT_STRTAB 5 /* string table */ 82 #define DT_SYMTAB 6 /* symbol table */ 83 #define DT_RELA 7 /* addr of relocation entries */ 84 #define DT_RELASZ 8 /* size of relocation table */ 85 #define DT_RELAENT 9 /* base size of relocation entry */ 86 #define DT_STRSZ 10 /* size of string table */ 87 #define DT_SYMENT 11 /* size of symbol table entry */ 88 #define DT_INIT 12 /* _init addr */ 89 #define DT_FINI 13 /* _fini addr */ 90 #define DT_SONAME 14 /* name of this shared object */ 91 #define DT_RPATH 15 /* run-time search path */ 92 #define DT_SYMBOLIC 16 /* shared object linked -Bsymbolic */ 93 #define DT_REL 17 /* addr of relocation entries */ 94 #define DT_RELSZ 18 /* size of relocation table */ 95 #define DT_RELENT 19 /* base size of relocation entry */ 96 #define DT_PLTREL 20 /* relocation type for PLT entry */ 97 #define DT_DEBUG 21 /* pointer to r_debug structure */ 98 #define DT_TEXTREL 22 /* text relocations remain for this object */ 99 #define DT_JMPREL 23 /* pointer to the PLT relocation entries */ 100 #define DT_BIND_NOW 24 /* perform all relocations at load of object */ 101 #define DT_INIT_ARRAY 25 /* pointer to .initarray */ 102 #define DT_FINI_ARRAY 26 /* pointer to .finiarray */ 103 #define DT_INIT_ARRAYSZ 27 /* size of .initarray */ 104 #define DT_FINI_ARRAYSZ 28 /* size of .finiarray */ 105 #define DT_RUNPATH 29 /* run-time search path */ 106 #define DT_FLAGS 30 /* state flags - see DF_* */ 107 108 #define DT_ENCODING 32 /* DT_* encoding rules start after this */ 109 #define DT_PREINIT_ARRAY 32 /* pointer to .preinitarray segment */ 110 #define DT_PREINIT_ARRAYSZ 33 /* size of .preinitarray segment */ 111 112 #define DT_MAXPOSTAGS 34 /* number of positive tags */ 113 114 #define DT_LOOS 0x6000000d /* OS specific range */ 115 #define DT_SUNW_AUXILIARY 0x6000000d /* symbol auxiliary name */ 116 #define DT_SUNW_RTLDINF 0x6000000e /* ld.so.1 info (private) */ 117 #define DT_SUNW_FILTER 0x6000000f /* symbol filter name */ 118 #define DT_SUNW_CAP 0x60000010 /* hardware/software */ 119 /* capabilities */ 120 #define DT_SUNW_SYMTAB 0x60000011 /* symtab with local fcn */ 121 /* symbols immediately */ 122 /* preceding DT_SYMTAB */ 123 #define DT_SUNW_SYMSZ 0x60000012 /* Size of SUNW_SYMTAB table */ 124 #define DT_HIOS 0x6ffff000 125 126 /* 127 * The following values have been deprecated and remain here to allow 128 * compatibility with older binaries. 129 */ 130 #define DT_DEPRECATED_SPARC_REGISTER 0x7000001 131 132 /* 133 * DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the 134 * Dyn.d_un.d_val field of the Elf*_Dyn structure. 135 */ 136 #define DT_VALRNGLO 0x6ffffd00 137 #define DT_CHECKSUM 0x6ffffdf8 /* elf checksum */ 138 #define DT_PLTPADSZ 0x6ffffdf9 /* pltpadding size */ 139 #define DT_MOVEENT 0x6ffffdfa /* move table entry size */ 140 #define DT_MOVESZ 0x6ffffdfb /* move table size */ 141 #define DT_FEATURE_1 0x6ffffdfc /* feature holder */ 142 #define DT_POSFLAG_1 0x6ffffdfd /* flags for DT_* entries, effecting */ 143 /* the following DT_* entry. */ 144 /* See DF_P1_* definitions */ 145 #define DT_SYMINSZ 0x6ffffdfe /* syminfo table size (in bytes) */ 146 #define DT_SYMINENT 0x6ffffdff /* syminfo entry size (in bytes) */ 147 #define DT_VALRNGHI 0x6ffffdff 148 149 /* 150 * DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the 151 * Dyn.d_un.d_ptr field of the Elf*_Dyn structure. 152 * 153 * If any adjustment is made to the ELF object after it has been 154 * built, these entries will need to be adjusted. 155 */ 156 #define DT_ADDRRNGLO 0x6ffffe00 157 #define DT_CONFIG 0x6ffffefa /* configuration information */ 158 #define DT_DEPAUDIT 0x6ffffefb /* dependency auditing */ 159 #define DT_AUDIT 0x6ffffefc /* object auditing */ 160 #define DT_PLTPAD 0x6ffffefd /* pltpadding (sparcv9) */ 161 #define DT_MOVETAB 0x6ffffefe /* move table */ 162 #define DT_SYMINFO 0x6ffffeff /* syminfo table */ 163 #define DT_ADDRRNGHI 0x6ffffeff 164 165 /* 166 * The following DT_* entries should have been assigned within one of the 167 * DT_* ranges, but existed before such ranges had been established. 168 */ 169 #define DT_VERSYM 0x6ffffff0 /* version symbol table - unused */ 170 171 #define DT_RELACOUNT 0x6ffffff9 /* number of RELATIVE relocations */ 172 #define DT_RELCOUNT 0x6ffffffa /* number of RELATIVE relocations */ 173 #define DT_FLAGS_1 0x6ffffffb /* state flags - see DF_1_* defs */ 174 #define DT_VERDEF 0x6ffffffc /* version definition table and */ 175 #define DT_VERDEFNUM 0x6ffffffd /* associated no. of entries */ 176 #define DT_VERNEED 0x6ffffffe /* version needed table and */ 177 #define DT_VERNEEDNUM 0x6fffffff /* associated no. of entries */ 178 179 /* 180 * DT_* entries between DT_HIPROC and DT_LOPROC are reserved for processor 181 * specific semantics. 182 */ 183 #define DT_LOPROC 0x70000000 /* processor specific range */ 184 #define DT_AUXILIARY 0x7ffffffd /* shared library auxiliary name */ 185 #define DT_USED 0x7ffffffe /* ignored - same as needed */ 186 #define DT_FILTER 0x7fffffff /* shared library filter name */ 187 #define DT_HIPROC 0x7fffffff 188 189 190 /* 191 * Values for DT_FLAGS 192 */ 193 #define DF_ORIGIN 0x00000001 /* ORIGIN processing required */ 194 #define DF_SYMBOLIC 0x00000002 /* symbolic bindings in effect */ 195 #define DF_TEXTREL 0x00000004 /* text relocations remain */ 196 #define DF_BIND_NOW 0x00000008 /* process all relocations */ 197 #define DF_STATIC_TLS 0x00000010 /* obj. contains static TLS refs */ 198 199 /* 200 * Values for the DT_POSFLAG_1 .dynamic entry. 201 * These values only affect the following DT_* entry. 202 */ 203 #define DF_P1_LAZYLOAD 0x00000001 /* following object is to be */ 204 /* lazy loaded */ 205 #define DF_P1_GROUPPERM 0x00000002 /* following object's symbols are */ 206 /* not available for general */ 207 /* symbol bindings. */ 208 /* 209 * Values for the DT_FLAGS_1 .dynamic entry. 210 */ 211 #define DF_1_NOW 0x00000001 /* set RTLD_NOW for this object */ 212 #define DF_1_GLOBAL 0x00000002 /* set RTLD_GLOBAL for this object */ 213 #define DF_1_GROUP 0x00000004 /* set RTLD_GROUP for this object */ 214 #define DF_1_NODELETE 0x00000008 /* set RTLD_NODELETE for this object */ 215 #define DF_1_LOADFLTR 0x00000010 /* trigger filtee loading at runtime */ 216 #define DF_1_INITFIRST 0x00000020 /* set RTLD_INITFIRST for this object */ 217 #define DF_1_NOOPEN 0x00000040 /* set RTLD_NOOPEN for this object */ 218 #define DF_1_ORIGIN 0x00000080 /* ORIGIN processing required */ 219 #define DF_1_DIRECT 0x00000100 /* direct binding enabled */ 220 #define DF_1_TRANS 0x00000200 221 #define DF_1_INTERPOSE 0x00000400 /* object is an 'interposer' */ 222 #define DF_1_NODEFLIB 0x00000800 /* ignore default library search path */ 223 #define DF_1_NODUMP 0x00001000 /* object can't be dldump(3x)'ed */ 224 #define DF_1_CONFALT 0x00002000 /* configuration alternative created */ 225 #define DF_1_ENDFILTEE 0x00004000 /* filtee terminates filters search */ 226 #define DF_1_DISPRELDNE 0x00008000 /* disp reloc applied at build time */ 227 #define DF_1_DISPRELPND 0x00010000 /* disp reloc applied at run-time */ 228 #define DF_1_NODIRECT 0x00020000 /* object contains symbols that */ 229 /* cannot be directly bound to */ 230 #define DF_1_IGNMULDEF 0x00040000 /* internal: krtld ignore muldefs */ 231 #define DF_1_NOKSYMS 0x00080000 /* internal: don't export object's */ 232 /* symbols via /dev/ksyms */ 233 #define DF_1_NOHDR 0x00100000 /* mapfile ?N:1st segment mapping */ 234 /* omits ELF & program headers */ 235 #define DF_1_NORELOC 0x00400000 /* internal: unrelocated object */ 236 237 /* 238 * Values set to DT_FEATURE_1 tag's d_val. 239 */ 240 #define DTF_1_PARINIT 0x00000001 /* partially initialization feature */ 241 #define DTF_1_CONFEXP 0x00000002 /* configuration file expected */ 242 243 244 /* 245 * Version structures. There are three types of version structure: 246 * 247 * o A definition of the versions within the image itself. 248 * Each version definition is assigned a unique index (starting from 249 * VER_NDX_BGNDEF) which is used to cross-reference symbols associated to 250 * the version. Each version can have one or more dependencies on other 251 * version definitions within the image. The version name, and any 252 * dependency names, are specified in the version definition auxiliary 253 * array. Version definition entries require a version symbol index table. 254 * 255 * o A version requirement on a needed dependency. Each needed entry 256 * specifies the shared object dependency (as specified in DT_NEEDED). 257 * One or more versions required from this dependency are specified in the 258 * version needed auxiliary array. 259 * 260 * o A version symbol index table. Each symbol indexes into this array 261 * to determine its version index. Index values of VER_NDX_BGNDEF or 262 * greater indicate the version definition to which a symbol is associated. 263 * (the size of a symbol index entry is recorded in the sh_info field). 264 */ 265 #ifndef _ASM 266 267 typedef struct { /* Version Definition Structure. */ 268 Elf32_Half vd_version; /* this structures version revision */ 269 Elf32_Half vd_flags; /* version information */ 270 Elf32_Half vd_ndx; /* version index */ 271 Elf32_Half vd_cnt; /* no. of associated aux entries */ 272 Elf32_Word vd_hash; /* version name hash value */ 273 Elf32_Word vd_aux; /* no. of bytes from start of this */ 274 /* verdef to verdaux array */ 275 Elf32_Word vd_next; /* no. of bytes from start of this */ 276 } Elf32_Verdef; /* verdef to next verdef entry */ 277 278 typedef struct { /* Verdef Auxiliary Structure. */ 279 Elf32_Word vda_name; /* first element defines the version */ 280 /* name. Additional entries */ 281 /* define dependency names. */ 282 Elf32_Word vda_next; /* no. of bytes from start of this */ 283 } Elf32_Verdaux; /* verdaux to next verdaux entry */ 284 285 286 typedef struct { /* Version Requirement Structure. */ 287 Elf32_Half vn_version; /* this structures version revision */ 288 Elf32_Half vn_cnt; /* no. of associated aux entries */ 289 Elf32_Word vn_file; /* name of needed dependency (file) */ 290 Elf32_Word vn_aux; /* no. of bytes from start of this */ 291 /* verneed to vernaux array */ 292 Elf32_Word vn_next; /* no. of bytes from start of this */ 293 } Elf32_Verneed; /* verneed to next verneed entry */ 294 295 typedef struct { /* Verneed Auxiliary Structure. */ 296 Elf32_Word vna_hash; /* version name hash value */ 297 Elf32_Half vna_flags; /* version information */ 298 Elf32_Half vna_other; 299 Elf32_Word vna_name; /* version name */ 300 Elf32_Word vna_next; /* no. of bytes from start of this */ 301 } Elf32_Vernaux; /* vernaux to next vernaux entry */ 302 303 typedef Elf32_Half Elf32_Versym; /* Version symbol index array */ 304 305 typedef struct { 306 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 307 Elf32_Half si_flags; /* per symbol flags */ 308 } Elf32_Syminfo; 309 310 311 #if defined(_LP64) || defined(_LONGLONG_TYPE) 312 typedef struct { 313 Elf64_Half vd_version; /* this structures version revision */ 314 Elf64_Half vd_flags; /* version information */ 315 Elf64_Half vd_ndx; /* version index */ 316 Elf64_Half vd_cnt; /* no. of associated aux entries */ 317 Elf64_Word vd_hash; /* version name hash value */ 318 Elf64_Word vd_aux; /* no. of bytes from start of this */ 319 /* verdef to verdaux array */ 320 Elf64_Word vd_next; /* no. of bytes from start of this */ 321 } Elf64_Verdef; /* verdef to next verdef entry */ 322 323 typedef struct { 324 Elf64_Word vda_name; /* first element defines the version */ 325 /* name. Additional entries */ 326 /* define dependency names. */ 327 Elf64_Word vda_next; /* no. of bytes from start of this */ 328 } Elf64_Verdaux; /* verdaux to next verdaux entry */ 329 330 typedef struct { 331 Elf64_Half vn_version; /* this structures version revision */ 332 Elf64_Half vn_cnt; /* no. of associated aux entries */ 333 Elf64_Word vn_file; /* name of needed dependency (file) */ 334 Elf64_Word vn_aux; /* no. of bytes from start of this */ 335 /* verneed to vernaux array */ 336 Elf64_Word vn_next; /* no. of bytes from start of this */ 337 } Elf64_Verneed; /* verneed to next verneed entry */ 338 339 typedef struct { 340 Elf64_Word vna_hash; /* version name hash value */ 341 Elf64_Half vna_flags; /* version information */ 342 Elf64_Half vna_other; 343 Elf64_Word vna_name; /* version name */ 344 Elf64_Word vna_next; /* no. of bytes from start of this */ 345 } Elf64_Vernaux; /* vernaux to next vernaux entry */ 346 347 typedef Elf64_Half Elf64_Versym; 348 349 typedef struct { 350 Elf64_Half si_boundto; /* direct bindings - symbol bound to */ 351 Elf64_Half si_flags; /* per symbol flags */ 352 } Elf64_Syminfo; 353 #endif /* defined(_LP64) || defined(_LONGLONG_TYPE) */ 354 355 #endif /* _ASM */ 356 357 /* 358 * Versym symbol index values. Values greater than VER_NDX_GLOBAL 359 * and less then VER_NDX_LORESERVE associate symbols with user 360 * specified version descriptors. 361 */ 362 #define VER_NDX_LOCAL 0 /* symbol is local */ 363 #define VER_NDX_GLOBAL 1 /* symbol is global and assigned to */ 364 /* the base version */ 365 #define VER_NDX_LORESERVE 0xff00 /* beginning of RESERVED entries */ 366 #define VER_NDX_ELIMINATE 0xff01 /* symbol is to be eliminated */ 367 368 /* 369 * Verdef and Verneed (via Veraux) flags values. 370 */ 371 #define VER_FLG_BASE 0x1 /* version definition of file itself */ 372 #define VER_FLG_WEAK 0x2 /* weak version identifier */ 373 374 /* 375 * Verdef version values. 376 */ 377 #define VER_DEF_NONE 0 /* Ver_def version */ 378 #define VER_DEF_CURRENT 1 379 #define VER_DEF_NUM 2 380 381 /* 382 * Verneed version values. 383 */ 384 #define VER_NEED_NONE 0 /* Ver_need version */ 385 #define VER_NEED_CURRENT 1 386 #define VER_NEED_NUM 2 387 388 389 /* 390 * Syminfo flag values 391 */ 392 #define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association */ 393 /* to object containing defn. */ 394 #define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */ 395 #define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */ 396 #define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn should be */ 397 /* lazily-loaded */ 398 #define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to */ 399 /* object containing defn. */ 400 #define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference */ 401 /* directly bind to this symbol */ 402 #define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */ 403 #define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */ 404 405 /* 406 * Syminfo.si_boundto values. 407 */ 408 #define SYMINFO_BT_SELF 0xffff /* symbol bound to self */ 409 #define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */ 410 #define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */ 411 #define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */ 412 #define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */ 413 414 /* 415 * Syminfo version values. 416 */ 417 #define SYMINFO_NONE 0 /* Syminfo version */ 418 #define SYMINFO_CURRENT 1 419 #define SYMINFO_NUM 2 420 421 422 /* 423 * Public structure defined and maintained within the runtime linker 424 */ 425 #ifndef _ASM 426 427 typedef struct link_map Link_map; 428 429 struct link_map { 430 unsigned long l_addr; /* address at which object is mapped */ 431 char *l_name; /* full name of loaded object */ 432 #ifdef _LP64 433 Elf64_Dyn *l_ld; /* dynamic structure of object */ 434 #else 435 Elf32_Dyn *l_ld; /* dynamic structure of object */ 436 #endif 437 Link_map *l_next; /* next link object */ 438 Link_map *l_prev; /* previous link object */ 439 char *l_refname; /* filters reference name */ 440 }; 441 442 #ifdef _SYSCALL32 443 typedef struct link_map32 Link_map32; 444 445 struct link_map32 { 446 Elf32_Word l_addr; 447 Elf32_Addr l_name; 448 Elf32_Addr l_ld; 449 Elf32_Addr l_next; 450 Elf32_Addr l_prev; 451 Elf32_Addr l_refname; 452 }; 453 #endif 454 455 typedef enum { 456 RT_CONSISTENT, 457 RT_ADD, 458 RT_DELETE 459 } r_state_e; 460 461 typedef enum { 462 RD_FL_NONE = 0, /* no flags */ 463 RD_FL_ODBG = (1<<0), /* old style debugger present */ 464 RD_FL_DBG = (1<<1) /* debugging enabled */ 465 } rd_flags_e; 466 467 468 469 /* 470 * Debugging events enabled inside of the runtime linker. To 471 * access these events see the librtld_db interface. 472 */ 473 typedef enum { 474 RD_NONE = 0, /* no event */ 475 RD_PREINIT, /* the Initial rendezvous before .init */ 476 RD_POSTINIT, /* the Second rendezvous after .init */ 477 RD_DLACTIVITY /* a dlopen or dlclose has happened */ 478 } rd_event_e; 479 480 struct r_debug { 481 int r_version; /* debugging info version no. */ 482 Link_map *r_map; /* address of link_map */ 483 unsigned long r_brk; /* address of update routine */ 484 r_state_e r_state; 485 unsigned long r_ldbase; /* base addr of ld.so */ 486 Link_map *r_ldsomap; /* address of ld.so.1's link map */ 487 rd_event_e r_rdevent; /* debug event */ 488 rd_flags_e r_flags; /* misc flags. */ 489 }; 490 491 #ifdef _SYSCALL32 492 struct r_debug32 { 493 Elf32_Word r_version; /* debugging info version no. */ 494 Elf32_Addr r_map; /* address of link_map */ 495 Elf32_Word r_brk; /* address of update routine */ 496 r_state_e r_state; 497 Elf32_Word r_ldbase; /* base addr of ld.so */ 498 Elf32_Addr r_ldsomap; /* address of ld.so.1's link map */ 499 rd_event_e r_rdevent; /* debug event */ 500 rd_flags_e r_flags; /* misc flags. */ 501 }; 502 #endif 503 504 505 #define R_DEBUG_VERSION 2 /* current r_debug version */ 506 #endif /* _ASM */ 507 508 /* 509 * Attribute/value structures used to bootstrap ELF-based dynamic linker. 510 */ 511 #ifndef _ASM 512 typedef struct { 513 Elf32_Sword eb_tag; /* what this one is */ 514 union { /* possible values */ 515 Elf32_Word eb_val; 516 Elf32_Addr eb_ptr; 517 Elf32_Off eb_off; 518 } eb_un; 519 } Elf32_Boot; 520 521 #if defined(_LP64) || defined(_LONGLONG_TYPE) 522 typedef struct { 523 Elf64_Xword eb_tag; /* what this one is */ 524 union { /* possible values */ 525 Elf64_Xword eb_val; 526 Elf64_Addr eb_ptr; 527 Elf64_Off eb_off; 528 } eb_un; 529 } Elf64_Boot; 530 #endif /* defined(_LP64) || defined(_LONGLONG_TYPE) */ 531 #endif /* _ASM */ 532 533 /* 534 * Attributes 535 */ 536 #define EB_NULL 0 /* (void) last entry */ 537 #define EB_DYNAMIC 1 /* (*) dynamic structure of subject */ 538 #define EB_LDSO_BASE 2 /* (caddr_t) base address of ld.so */ 539 #define EB_ARGV 3 /* (caddr_t) argument vector */ 540 #define EB_ENVP 4 /* (char **) environment strings */ 541 #define EB_AUXV 5 /* (auxv_t *) auxiliary vector */ 542 #define EB_DEVZERO 6 /* (int) fd for /dev/zero */ 543 #define EB_PAGESIZE 7 /* (int) page size */ 544 #define EB_MAX 8 /* number of "EBs" */ 545 #define EB_MAX_SIZE32 64 /* size in bytes, _ILP32 */ 546 #define EB_MAX_SIZE64 128 /* size in bytes, _LP64 */ 547 548 549 #ifndef _ASM 550 551 #ifdef __STDC__ 552 553 /* 554 * Concurrency communication structure for libc callbacks. 555 */ 556 extern void _ld_libc(void *); 557 #else /* __STDC__ */ 558 extern void _ld_libc(); 559 #endif /* __STDC__ */ 560 561 #pragma unknown_control_flow(_ld_libc) 562 #endif /* _ASM */ 563 564 #ifdef __cplusplus 565 } 566 #endif 567 568 #endif /* _SYS_LINK_H */ 569