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 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * Object file dependent support for ELF objects. 30 */ 31 #include "_synonyms.h" 32 33 #include <stdio.h> 34 #include <sys/procfs.h> 35 #include <sys/mman.h> 36 #include <dlfcn.h> 37 #include <debug.h> 38 #include <conv.h> 39 #include "_rtld.h" 40 #include "_audit.h" 41 #include "_elf.h" 42 #include "msg.h" 43 44 /* 45 * Move data 46 */ 47 void 48 move_data(Rt_map *lmp) 49 { 50 Lm_list *lml = LIST(lmp); 51 Move *mv = MOVETAB(lmp); 52 Phdr *pptr = SUNWBSS(lmp); 53 ulong_t num, mvnum = MOVESZ(lmp) / MOVEENT(lmp); 54 55 DBG_CALL(Dbg_move_data(lmp)); 56 for (num = 0; num < mvnum; num++, mv++) { 57 Addr taddr; 58 Half rep, stride; 59 Sym *sym; 60 61 /* 62 * If the target address needs to be mapped in, 63 * map it first. 64 * (You have to protect the code, thread safe) 65 */ 66 if (FLAGS(lmp) & FLG_RT_SUNWBSS) { 67 long zlen; 68 Off foff; 69 caddr_t zaddr, eaddr; 70 71 foff = (Off) (pptr->p_vaddr + ADDR(lmp)); 72 zaddr = (caddr_t)M_PROUND(foff); 73 eaddr = pptr->p_vaddr + ADDR(lmp) + 74 (caddr_t)pptr->p_memsz; 75 zero((caddr_t)foff, (long)(zaddr - foff)); 76 zlen = eaddr - zaddr; 77 if (zlen > 0) { 78 if (dz_map(lml, zaddr, zlen, 79 (PROT_READ | PROT_WRITE), 80 (MAP_FIXED | MAP_PRIVATE)) == MAP_FAILED) 81 return; 82 } 83 84 FLAGS(lmp) &= ~FLG_RT_SUNWBSS; 85 } 86 87 if ((sym = (Sym *)SYMTAB(lmp) + ELF_M_SYM(mv->m_info)) == 0) 88 continue; 89 90 stride = mv->m_stride + 1; 91 taddr = sym->st_value; 92 if (FLAGS(lmp) & FLG_RT_FIXED) 93 taddr = taddr + mv->m_poffset; 94 else 95 taddr = taddr + mv->m_poffset + ADDR(lmp); 96 97 DBG_CALL(Dbg_move_entry2(lml, mv, sym->st_name, 98 (const char *)(sym->st_name + STRTAB(lmp)))); 99 100 for (rep = 0; rep < mv->m_repeat; rep++) { 101 DBG_CALL(Dbg_move_expand(lml, mv, taddr)); 102 103 switch (ELF_M_SIZE(mv->m_info)) { 104 case 1: 105 *((char *)taddr) = (char)mv->m_value; 106 taddr += stride; 107 break; 108 case 2: 109 /* LINTED */ 110 *((Half *)taddr) = (Half)mv->m_value; 111 taddr += 2 * stride; 112 break; 113 case 4: 114 /* LINTED */ 115 *((Word *)taddr) = (Word)mv->m_value; 116 taddr += 4 * stride; 117 break; 118 case 8: 119 /* LINTED */ 120 *((unsigned long long *)taddr) = mv->m_value; 121 taddr += 8 * stride; 122 break; 123 default: 124 eprintf(lml, ERR_NONE, MSG_INTL(MSG_MOVE_ERR1)); 125 break; 126 } 127 } 128 } 129 } 130