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 (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. 27 */ 28 29 #include <stdio.h> 30 #include <string.h> 31 #include "msg.h" 32 #include "_libld.h" 33 34 35 /* 36 * Print a virtual address map of input and output sections together with 37 * multiple symbol definitions (if they exist). 38 */ 39 static Boolean symbol_title = TRUE; 40 41 static void 42 sym_muldef_title() 43 { 44 (void) printf(MSG_INTL(MSG_ENT_MUL_FMT_TIL_0), 45 MSG_INTL(MSG_ENT_MUL_TIL_0)); 46 (void) printf(MSG_INTL(MSG_ENT_MUL_FMT_TIL_1), 47 MSG_INTL(MSG_ENT_MUL_ITM_SYM), 48 MSG_INTL(MSG_ENT_MUL_ITM_DEF_0), 49 MSG_INTL(MSG_ENT_MUL_ITM_DEF_1)); 50 symbol_title = FALSE; 51 } 52 53 void 54 ld_map_out(Ofl_desc *ofl) 55 { 56 Sg_desc *sgp; 57 Is_desc *isp; 58 Sym_avlnode *sav; 59 Aliste idx1; 60 61 (void) printf(MSG_INTL(MSG_ENT_MAP_FMT_TIL_1), 62 MSG_INTL(MSG_ENT_MAP_TITLE_1)); 63 if (ofl->ofl_flags & FLG_OF_RELOBJ) 64 (void) printf(MSG_INTL(MSG_ENT_MAP_FMT_TIL_2), 65 MSG_INTL(MSG_ENT_ITM_OUTPUT), 66 MSG_INTL(MSG_ENT_ITM_INPUT), 67 MSG_INTL(MSG_ENT_ITM_NEW), 68 MSG_INTL(MSG_ENT_ITM_SECTION), 69 MSG_INTL(MSG_ENT_ITM_SECTION), 70 MSG_INTL(MSG_ENT_ITM_DISPMNT), 71 MSG_INTL(MSG_ENT_ITM_SIZE)); 72 else 73 (void) printf(MSG_INTL(MSG_ENT_MAP_FMT_TIL_3), 74 MSG_INTL(MSG_ENT_ITM_OUTPUT), 75 MSG_INTL(MSG_ENT_ITM_INPUT), 76 MSG_INTL(MSG_ENT_ITM_VIRTUAL), 77 MSG_INTL(MSG_ENT_ITM_SECTION), 78 MSG_INTL(MSG_ENT_ITM_SECTION), 79 MSG_INTL(MSG_ENT_ITM_ADDRESS), 80 MSG_INTL(MSG_ENT_ITM_SIZE)); 81 82 for (APLIST_TRAVERSE(ofl->ofl_segs, idx1, sgp)) { 83 Os_desc *osp; 84 Aliste idx2; 85 86 if (sgp->sg_phdr.p_type != PT_LOAD) 87 continue; 88 89 for (APLIST_TRAVERSE(sgp->sg_osdescs, idx2, osp)) { 90 int os_isdescs_idx; 91 Aliste idx3; 92 93 (void) printf(MSG_INTL(MSG_ENT_MAP_ENTRY_1), 94 osp->os_name, EC_ADDR(osp->os_shdr->sh_addr), 95 EC_XWORD(osp->os_shdr->sh_size)); 96 97 OS_ISDESCS_TRAVERSE(os_isdescs_idx, osp, idx3, isp) { 98 Addr addr; 99 100 /* 101 * Although there seems little point in printing 102 * discarded (empty) sections, especially as 103 * diagnostics under -Dsegments,details are more 104 * informative, continue printing them. There 105 * are user scripts, fragile to say the least, 106 * that grep(1) through load-map output to 107 * discover object requirements. These scripts 108 * don't grep for all input sections types (ie. 109 * .picdata), and have become dependent on null 110 * sections (ie. .text) existing in the 111 * load-map output. 112 */ 113 if (isp->is_flags & FLG_IS_DISCARD) { 114 addr = 0; 115 } else { 116 addr = (Addr) 117 _elf_getxoff(isp->is_indata); 118 if (!(ofl->ofl_flags & FLG_OF_RELOBJ)) 119 addr += isp->is_osdesc-> 120 os_shdr->sh_addr; 121 } 122 123 (void) printf(MSG_INTL(MSG_ENT_MAP_ENTRY_2), 124 isp->is_name, EC_ADDR(addr), 125 EC_XWORD(isp->is_shdr->sh_size), 126 ((isp->is_file != NULL) ? 127 (char *)(isp->is_file->ifl_name) : 128 MSG_INTL(MSG_STR_NULL))); 129 } 130 } 131 } 132 133 if (ofl->ofl_flags & FLG_OF_RELOBJ) 134 return; 135 136 /* 137 * Check for any multiply referenced symbols (ie. symbols that have 138 * been overridden from a shared library). 139 */ 140 for (sav = avl_first(&ofl->ofl_symavl); sav; 141 sav = AVL_NEXT(&ofl->ofl_symavl, sav)) { 142 Sym_desc *sdp = sav->sav_sdp; 143 const char *name = sdp->sd_name, *ducp, *adcp; 144 APlist *dfiles; 145 Aliste idx; 146 147 if (((dfiles = sdp->sd_aux->sa_dfiles) == NULL) || 148 (aplist_nitems(dfiles) == 1)) 149 continue; 150 151 /* 152 * Files that define a symbol are saved on the `sa_dfiles' list. 153 * Ignore symbols that aren't needed, and any special symbols 154 * that the link editor may produce (symbols of type ABS and 155 * COMMON are not recorded in the first place, however functions 156 * like _init() and _fini() commonly have multiple occurrences). 157 */ 158 if ((sdp->sd_ref == REF_DYN_SEEN) || 159 (sdp->sd_aux && sdp->sd_aux->sa_symspec) || 160 (strcmp(MSG_ORIG(MSG_SYM_FINI_U), name) == 0) || 161 (strcmp(MSG_ORIG(MSG_SYM_INIT_U), name) == 0) || 162 (strcmp(MSG_ORIG(MSG_SYM_LIBVER_U), name) == 0)) 163 continue; 164 165 if (symbol_title) 166 sym_muldef_title(); 167 168 ducp = sdp->sd_file->ifl_name; 169 (void) printf(MSG_INTL(MSG_ENT_MUL_ENTRY_1), demangle(name), 170 ducp); 171 for (APLIST_TRAVERSE(dfiles, idx, adcp)) { 172 /* 173 * Ignore the referenced symbol. 174 */ 175 if (strcmp(adcp, ducp) != 0) 176 (void) printf(MSG_INTL(MSG_ENT_MUL_ENTRY_2), 177 adcp); 178 } 179 } 180 } 181 182 /* 183 * Traverse the entrance criteria list searching for those sections that haven't 184 * been met and print error message. (only in the case of reordering) 185 */ 186 void 187 ld_ent_check(Ofl_desc * ofl) 188 { 189 Ent_desc *enp; 190 Aliste ndx; 191 192 /* 193 * Try to give as much information to the user about the specific 194 * line in the mapfile. If the line contains a file name then 195 * output the filename too. Hence we have two warning lines - 196 * one for criterias where a filename is used and the other 197 * for those without a filename. 198 */ 199 for (APLIST_TRAVERSE(ofl->ofl_ents, ndx, enp)) { 200 /* 201 * No warning if any of the following hold: 202 * - The segment has no entrance criteria requiring 203 * input section sorting (FLG_SG_IS_ORDER not set). 204 * - The entrance criteria was used to place a section. 205 * - The specific entrance criteria does not require sorting 206 */ 207 if (((enp->ec_segment->sg_flags & FLG_SG_IS_ORDER) == 0) || 208 (enp->ec_flags & FLG_EC_USED) || (enp->ec_ordndx == 0)) 209 continue; 210 211 212 if (alist_nitems(enp->ec_files) > 0) { 213 ld_eprintf(ofl, ERR_WARNING, MSG_INTL(MSG_ENT_NOSEC_1), 214 enp->ec_segment->sg_name, enp->ec_is_name); 215 } else { 216 ld_eprintf(ofl, ERR_WARNING, MSG_INTL(MSG_ENT_NOSEC_2), 217 enp->ec_segment->sg_name, enp->ec_is_name); 218 } 219 } 220 } 221