1 /* Print contents of object file note. 2 Copyright (C) 2002, 2007, 2009, 2011 Red Hat, Inc. 3 This file is part of Red Hat elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 5 6 Red Hat elfutils is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by the 8 Free Software Foundation; version 2 of the License. 9 10 Red Hat elfutils is distributed in the hope that it will be useful, but 11 WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 General Public License for more details. 14 15 You should have received a copy of the GNU General Public License along 16 with Red Hat elfutils; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 18 19 In addition, as a special exception, Red Hat, Inc. gives You the 20 additional right to link the code of Red Hat elfutils with code licensed 21 under any Open Source Initiative certified open source license 22 (http://www.opensource.org/licenses/index.php) which requires the 23 distribution of source code with any binary distribution and to 24 distribute linked combinations of the two. Non-GPL Code permitted under 25 this exception must only link to the code of Red Hat elfutils through 26 those well defined interfaces identified in the file named EXCEPTION 27 found in the source code files (the "Approved Interfaces"). The files 28 of Non-GPL Code may instantiate templates or use macros or inline 29 functions from the Approved Interfaces without causing the resulting 30 work to be covered by the GNU General Public License. Only Red Hat, 31 Inc. may make changes or additions to the list of Approved Interfaces. 32 Red Hat's grant of this exception is conditioned upon your not adding 33 any new exceptions. If you wish to add a new Approved Interface or 34 exception, please contact Red Hat. You must obey the GNU General Public 35 License in all respects for all of the Red Hat elfutils code and other 36 code used in conjunction with Red Hat elfutils except the Non-GPL Code 37 covered by this exception. If you modify this file, you may extend this 38 exception to your version of the file, but you are not obligated to do 39 so. If you do not wish to provide this exception without modification, 40 you must delete this exception statement from your version and license 41 this file solely under the GPL without exception. 42 43 Red Hat elfutils is an included package of the Open Invention Network. 44 An included package of the Open Invention Network is a package for which 45 Open Invention Network licensees cross-license their patents. No patent 46 license is granted, either expressly or impliedly, by designation as an 47 included package. Should you wish to participate in the Open Invention 48 Network licensing program, please visit www.openinventionnetwork.com 49 <http://www.openinventionnetwork.com>. */ 50 51 #ifdef HAVE_CONFIG_H 52 # include <config.h> 53 #endif 54 55 #include <inttypes.h> 56 #include <stdio.h> 57 #include <string.h> 58 #include <libeblP.h> 59 60 61 void 62 ebl_object_note (ebl, name, type, descsz, desc) 63 Ebl *ebl; 64 const char *name; 65 uint32_t type; 66 uint32_t descsz; 67 const char *desc; 68 { 69 if (! ebl->object_note (name, type, descsz, desc)) 70 /* The machine specific function did not know this type. */ 71 72 if (strcmp ("stapsdt", name) == 0) 73 { 74 if (type != 3) 75 { 76 printf (gettext ("unknown SDT version %u\n"), type); 77 return; 78 } 79 80 /* Descriptor starts with three addresses, pc, base ref and 81 semaphore. Then three zero terminated strings provider, 82 name and arguments. */ 83 84 union 85 { 86 Elf64_Addr a64[3]; 87 Elf32_Addr a32[3]; 88 } addrs; 89 90 size_t addrs_size = gelf_fsize (ebl->elf, ELF_T_ADDR, 3, EV_CURRENT); 91 if (descsz < addrs_size + 3) 92 { 93 invalid_sdt: 94 printf (gettext ("invalid SDT probe descriptor\n")); 95 return; 96 } 97 98 Elf_Data src = 99 { 100 .d_type = ELF_T_ADDR, .d_version = EV_CURRENT, 101 .d_buf = (void *) desc, .d_size = addrs_size 102 }; 103 104 Elf_Data dst = 105 { 106 .d_type = ELF_T_ADDR, .d_version = EV_CURRENT, 107 .d_buf = &addrs, .d_size = addrs_size 108 }; 109 110 if (gelf_xlatetom (ebl->elf, &dst, &src, 111 elf_getident (ebl->elf, NULL)[EI_DATA]) == NULL) 112 { 113 printf ("%s\n", elf_errmsg (-1)); 114 return; 115 } 116 117 const char *provider = desc + addrs_size; 118 const char *pname = memchr (provider, '\0', desc + descsz - provider); 119 if (pname == NULL) 120 goto invalid_sdt; 121 122 ++pname; 123 const char *args = memchr (pname, '\0', desc + descsz - pname); 124 if (args == NULL || 125 memchr (++args, '\0', desc + descsz - pname) != desc + descsz - 1) 126 goto invalid_sdt; 127 128 GElf_Addr pc; 129 GElf_Addr base; 130 GElf_Addr sem; 131 if (gelf_getclass (ebl->elf) == ELFCLASS32) 132 { 133 pc = addrs.a32[0]; 134 base = addrs.a32[1]; 135 sem = addrs.a32[2]; 136 } 137 else 138 { 139 pc = addrs.a64[0]; 140 base = addrs.a64[1]; 141 sem = addrs.a64[2]; 142 } 143 144 printf (gettext (" PC: ")); 145 printf ("%#" PRIx64 ",", pc); 146 printf (gettext (" Base: ")); 147 printf ("%#" PRIx64 ",", base); 148 printf (gettext (" Semaphore: ")); 149 printf ("%#" PRIx64 "\n", sem); 150 printf (gettext (" Provider: ")); 151 printf ("%s,", provider); 152 printf (gettext (" Name: ")); 153 printf ("%s,", pname); 154 printf (gettext (" Args: ")); 155 printf ("'%s'\n", args); 156 return; 157 } 158 159 switch (type) 160 { 161 case NT_GNU_BUILD_ID: 162 if (strcmp (name, "GNU") == 0 && descsz > 0) 163 { 164 printf (gettext (" Build ID: ")); 165 uint_fast32_t i; 166 for (i = 0; i < descsz - 1; ++i) 167 printf ("%02" PRIx8, (uint8_t) desc[i]); 168 printf ("%02" PRIx8 "\n", (uint8_t) desc[i]); 169 } 170 break; 171 172 case NT_GNU_GOLD_VERSION: 173 if (strcmp (name, "GNU") == 0 && descsz > 0) 174 /* A non-null terminated version string. */ 175 printf (gettext (" Linker version: %.*s\n"), 176 (int) descsz, desc); 177 break; 178 179 case NT_GNU_ABI_TAG: 180 if (strcmp (name, "GNU") == 0 && descsz >= 8 && descsz % 4 == 0) 181 { 182 Elf_Data in = 183 { 184 .d_version = EV_CURRENT, 185 .d_type = ELF_T_WORD, 186 .d_size = descsz, 187 .d_buf = (void *) desc 188 }; 189 uint32_t buf[descsz / 4]; 190 Elf_Data out = 191 { 192 .d_version = EV_CURRENT, 193 .d_type = ELF_T_WORD, 194 .d_size = descsz, 195 .d_buf = buf 196 }; 197 198 if (elf32_xlatetom (&out, &in, ebl->data) != NULL) 199 { 200 const char *os; 201 switch (buf[0]) 202 { 203 case ELF_NOTE_OS_LINUX: 204 os = "Linux"; 205 break; 206 207 case ELF_NOTE_OS_GNU: 208 os = "GNU"; 209 break; 210 211 case ELF_NOTE_OS_SOLARIS2: 212 os = "Solaris"; 213 break; 214 215 case ELF_NOTE_OS_FREEBSD: 216 os = "FreeBSD"; 217 break; 218 219 default: 220 os = "???"; 221 break; 222 } 223 224 printf (gettext (" OS: %s, ABI: "), os); 225 for (size_t cnt = 1; cnt < descsz / 4; ++cnt) 226 { 227 if (cnt > 1) 228 putchar_unlocked ('.'); 229 printf ("%" PRIu32, buf[cnt]); 230 } 231 putchar_unlocked ('\n'); 232 } 233 break; 234 } 235 /* FALLTHROUGH */ 236 237 default: 238 /* Unknown type. */ 239 break; 240 } 241 } 242
