1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 23*0Sstevel@tonic-gate 24*0Sstevel@tonic-gate /* 25*0Sstevel@tonic-gate * Copyright (c) 1987 by Sun Microsystems, Inc. 26*0Sstevel@tonic-gate */ 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate /* 29*0Sstevel@tonic-gate * Link editor public definitions. 30*0Sstevel@tonic-gate */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #ifndef _link_h 33*0Sstevel@tonic-gate #define _link_h 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate /* 36*0Sstevel@tonic-gate * Structure describing logical name and requirements on an object 37*0Sstevel@tonic-gate * which is to be loaded dynamically. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate struct old_link_object { 40*0Sstevel@tonic-gate char *lo_name; /* name of object */ 41*0Sstevel@tonic-gate int lo_library : 1, /* searched for by library rules */ 42*0Sstevel@tonic-gate lo_unused : 31; 43*0Sstevel@tonic-gate short lo_major; /* major version number */ 44*0Sstevel@tonic-gate short lo_minor; /* minor version number */ 45*0Sstevel@tonic-gate }; 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate struct link_object { 48*0Sstevel@tonic-gate long lo_name; /* name (often relative) */ 49*0Sstevel@tonic-gate int lo_library : 1, /* searched for by library rules */ 50*0Sstevel@tonic-gate lo_unused : 31; 51*0Sstevel@tonic-gate short lo_major; /* major version number */ 52*0Sstevel@tonic-gate short lo_minor; /* minor version number */ 53*0Sstevel@tonic-gate long lo_next; /* next one (often relative) */ 54*0Sstevel@tonic-gate }; 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* 57*0Sstevel@tonic-gate * Structure describing name and placement of dynamically loaded 58*0Sstevel@tonic-gate * objects in a process' address space. 59*0Sstevel@tonic-gate */ 60*0Sstevel@tonic-gate struct link_map { 61*0Sstevel@tonic-gate caddr_t lm_addr; /* address at which object mapped */ 62*0Sstevel@tonic-gate char *lm_name; /* full name of loaded object */ 63*0Sstevel@tonic-gate struct link_map *lm_next; /* next object in map */ 64*0Sstevel@tonic-gate struct link_object *lm_lop; /* link object that got us here */ 65*0Sstevel@tonic-gate caddr_t lm_lob; /* base address for said link object */ 66*0Sstevel@tonic-gate int lm_rwt : 1; /* text is read/write */ 67*0Sstevel@tonic-gate struct link_dynamic *lm_ld; /* dynamic structure */ 68*0Sstevel@tonic-gate caddr_t lm_lpd; /* loader private data */ 69*0Sstevel@tonic-gate }; 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate /* 72*0Sstevel@tonic-gate * Version 1 of dynamic linking information. With the exception of 73*0Sstevel@tonic-gate * ld_loaded (determined at execution time) and ld_stab_hash (a special 74*0Sstevel@tonic-gate * case of relocation handled at execution time), the values in this 75*0Sstevel@tonic-gate * structure reflect offsets from the containing link_dynamic structure. 76*0Sstevel@tonic-gate */ 77*0Sstevel@tonic-gate struct link_dynamic_1 { 78*0Sstevel@tonic-gate struct link_map *ld_loaded; /* list of loaded objects */ 79*0Sstevel@tonic-gate long ld_need; /* list of needed objects */ 80*0Sstevel@tonic-gate long ld_rules; /* search rules for library objects */ 81*0Sstevel@tonic-gate long ld_got; /* global offset table */ 82*0Sstevel@tonic-gate long ld_plt; /* procedure linkage table */ 83*0Sstevel@tonic-gate long ld_rel; /* relocation table */ 84*0Sstevel@tonic-gate long ld_hash; /* symbol hash table */ 85*0Sstevel@tonic-gate long ld_stab; /* symbol table itself */ 86*0Sstevel@tonic-gate long (*ld_stab_hash)(); /* "pointer" to symbol hash function */ 87*0Sstevel@tonic-gate long ld_buckets; /* number of hash buckets */ 88*0Sstevel@tonic-gate long ld_symbols; /* symbol strings */ 89*0Sstevel@tonic-gate long ld_symb_size; /* size of symbol strings */ 90*0Sstevel@tonic-gate long ld_text; /* size of text area */ 91*0Sstevel@tonic-gate }; 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate struct link_dynamic_2 { 94*0Sstevel@tonic-gate struct link_map *ld_loaded; /* list of loaded objects */ 95*0Sstevel@tonic-gate long ld_need; /* list of needed objects */ 96*0Sstevel@tonic-gate long ld_rules; /* search rules for library objects */ 97*0Sstevel@tonic-gate long ld_got; /* global offset table */ 98*0Sstevel@tonic-gate long ld_plt; /* procedure linkage table */ 99*0Sstevel@tonic-gate long ld_rel; /* relocation table */ 100*0Sstevel@tonic-gate long ld_hash; /* symbol hash table */ 101*0Sstevel@tonic-gate long ld_stab; /* symbol table itself */ 102*0Sstevel@tonic-gate long (*ld_stab_hash)(); /* "pointer" to symbol hash function */ 103*0Sstevel@tonic-gate long ld_buckets; /* number of hash buckets */ 104*0Sstevel@tonic-gate long ld_symbols; /* symbol strings */ 105*0Sstevel@tonic-gate long ld_symb_size; /* size of symbol strings */ 106*0Sstevel@tonic-gate long ld_text; /* size of text area */ 107*0Sstevel@tonic-gate long ld_plt_sz; /* size of procedure linkage table */ 108*0Sstevel@tonic-gate }; 109*0Sstevel@tonic-gate 110*0Sstevel@tonic-gate /* 111*0Sstevel@tonic-gate * Structure pointing to run time allocated common symbols and 112*0Sstevel@tonic-gate * its string. 113*0Sstevel@tonic-gate */ 114*0Sstevel@tonic-gate struct rtc_symb { 115*0Sstevel@tonic-gate struct nlist *rtc_sp; /* symbol for common */ 116*0Sstevel@tonic-gate struct rtc_symb *rtc_next; /* next common */ 117*0Sstevel@tonic-gate }; 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate /* 120*0Sstevel@tonic-gate * Debugger interface structure. 121*0Sstevel@tonic-gate */ 122*0Sstevel@tonic-gate struct ld_debug { 123*0Sstevel@tonic-gate int ldd_version; /* version # of interface */ 124*0Sstevel@tonic-gate int ldd_in_debugger; /* a debugger is running us */ 125*0Sstevel@tonic-gate int ldd_sym_loaded; /* we loaded some symbols */ 126*0Sstevel@tonic-gate char *ldd_bp_addr; /* place for ld-generated bpt */ 127*0Sstevel@tonic-gate int ldd_bp_inst; /* instruction which was there */ 128*0Sstevel@tonic-gate struct rtc_symb *ldd_cp; /* commons we built */ 129*0Sstevel@tonic-gate }; 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate /* 132*0Sstevel@tonic-gate * Structure associated with each object which may be or which requires 133*0Sstevel@tonic-gate * execution-time link editing. Used by the run-time linkage editor to 134*0Sstevel@tonic-gate * identify needed objects and symbol definitions and references. 135*0Sstevel@tonic-gate */ 136*0Sstevel@tonic-gate struct old_link_dynamic { 137*0Sstevel@tonic-gate int ld_version; /* version # of this structure */ 138*0Sstevel@tonic-gate union { 139*0Sstevel@tonic-gate struct link_dynamic_1 ld_1; 140*0Sstevel@tonic-gate } ld_un; 141*0Sstevel@tonic-gate 142*0Sstevel@tonic-gate int in_debugging; 143*0Sstevel@tonic-gate int sym_loaded; 144*0Sstevel@tonic-gate char *bp_addr; 145*0Sstevel@tonic-gate int bp_inst; 146*0Sstevel@tonic-gate struct rtc_symb *cp; /* pointer to an array of runtime */ 147*0Sstevel@tonic-gate /* allocated common symbols. */ 148*0Sstevel@tonic-gate }; 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate struct link_dynamic { 151*0Sstevel@tonic-gate int ld_version; /* version # of this structure */ 152*0Sstevel@tonic-gate struct ld_debug *ldd; 153*0Sstevel@tonic-gate union { 154*0Sstevel@tonic-gate struct link_dynamic_1 *ld_1; 155*0Sstevel@tonic-gate struct link_dynamic_2 *ld_2; 156*0Sstevel@tonic-gate } ld_un; 157*0Sstevel@tonic-gate }; 158*0Sstevel@tonic-gate 159*0Sstevel@tonic-gate #define v2 ld_un.ld_2 160*0Sstevel@tonic-gate #define v1 ld_un.ld_1 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate /* 163*0Sstevel@tonic-gate * get size of relocations 164*0Sstevel@tonic-gate */ 165*0Sstevel@tonic-gate #define GETGOTSZ(x) (x->ld_version < 2 ? ((struct old_link_dynamic *) x)->v1.ld_plt - ((struct old_link_dynamic *) x)->v1.ld_got : (x)->v2->ld_plt - (x)->v2->ld_got) 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate #define GETPLTSZ(x) (x->ld_version < 2 ? ((struct old_link_dynamic *) x)->v1.ld_rel - ((struct old_link_dynamic *) x)->v1.ld_plt : (x)->v2->ld_rel - (x)->v2->ld_plt) 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate #define GETRELSZ(x) (x->ld_version < 2 ? ((struct old_link_dynamic *) x)->v1.ld_hash - ((struct old_link_dynamic *) x)->v1.ld_rel : (x)->v2->ld_hash - (x)->v2->ld_rel) 170*0Sstevel@tonic-gate 171*0Sstevel@tonic-gate #define GETHASHSZ(x) (x->ld_version < 2 ? ((struct old_link_dynamic *) x)->v1.ld_stab - ((struct old_link_dynamic *) x)->v1.ld_hash : (x)->v2->ld_stab - (x)->v2->ld_hash) 172*0Sstevel@tonic-gate 173*0Sstevel@tonic-gate #define GETSTABSZ(x) (x->ld_version < 2 ? ((struct old_link_dynamic *) x)->v1.ld_symbols - ((struct old_link_dynamic *) x)->v1.ld_stab : (x)->v2->ld_symbols - (x)->v2->ld_stab) 174*0Sstevel@tonic-gate 175*0Sstevel@tonic-gate #undef v2 176*0Sstevel@tonic-gate #undef v1 177*0Sstevel@tonic-gate 178*0Sstevel@tonic-gate #endif /*!_link_h*/ 179