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 /* 23*0Sstevel@tonic-gate * Copyright (c) 1995-2001 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate * 26*0Sstevel@tonic-gate * Update the symbol table entries: 27*0Sstevel@tonic-gate * 28*0Sstevel@tonic-gate * o If addr is non-zero then every symbol entry is updated to indicate the 29*0Sstevel@tonic-gate * new location to which the object will be mapped. 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * o The address of the `_edata' and `_end' symbols, and their associated 32*0Sstevel@tonic-gate * section, is updated to reflect any new heap addition. 33*0Sstevel@tonic-gate */ 34*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #include <libelf.h> 37*0Sstevel@tonic-gate #include <string.h> 38*0Sstevel@tonic-gate #include "sgs.h" 39*0Sstevel@tonic-gate #include "machdep.h" 40*0Sstevel@tonic-gate #include "msg.h" 41*0Sstevel@tonic-gate #include "_librtld.h" 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate void 44*0Sstevel@tonic-gate update_sym(Cache *cache, Cache *_cache, Addr edata, Half endx, Addr addr) 45*0Sstevel@tonic-gate { 46*0Sstevel@tonic-gate char *strs; 47*0Sstevel@tonic-gate Sym *syms; 48*0Sstevel@tonic-gate Shdr *shdr; 49*0Sstevel@tonic-gate Xword symn, cnt; 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* 52*0Sstevel@tonic-gate * Set up to read the symbol table and its associated string table. 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate shdr = _cache->c_shdr; 55*0Sstevel@tonic-gate syms = (Sym *)_cache->c_data->d_buf; 56*0Sstevel@tonic-gate symn = shdr->sh_size / shdr->sh_entsize; 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate strs = (char *)cache[shdr->sh_link].c_data->d_buf; 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate /* 61*0Sstevel@tonic-gate * Loop through the symbol table looking for `_end' and `_edata'. 62*0Sstevel@tonic-gate */ 63*0Sstevel@tonic-gate for (cnt = 0; cnt < symn; cnt++, syms++) { 64*0Sstevel@tonic-gate char *name = strs + syms->st_name; 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate if (addr) { 67*0Sstevel@tonic-gate if (syms->st_value) 68*0Sstevel@tonic-gate syms->st_value += addr; 69*0Sstevel@tonic-gate } 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate if ((name[0] != '_') || (name[1] != 'e')) 72*0Sstevel@tonic-gate continue; 73*0Sstevel@tonic-gate if (strcmp(name, MSG_ORIG(MSG_SYM_END)) && 74*0Sstevel@tonic-gate strcmp(name, MSG_ORIG(MSG_SYM_EDATA))) 75*0Sstevel@tonic-gate continue; 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate syms->st_value = edata + addr; 78*0Sstevel@tonic-gate if (endx) 79*0Sstevel@tonic-gate syms->st_shndx = endx; 80*0Sstevel@tonic-gate } 81*0Sstevel@tonic-gate } 82