1 /* Print contents of object file note. 2 Copyright (C) 2002, 2007, 2009, 2011 Red Hat, Inc. 3 This file is part of elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 5 6 This file is free software; you can redistribute it and/or modify 7 it under the terms of either 8 9 * the GNU Lesser General Public License as published by the Free 10 Software Foundation; either version 3 of the License, or (at 11 your option) any later version 12 13 or 14 15 * the GNU General Public License as published by the Free 16 Software Foundation; either version 2 of the License, or (at 17 your option) any later version 18 19 or both in parallel, as here. 20 21 elfutils is distributed in the hope that it will be useful, but 22 WITHOUT ANY WARRANTY; without even the implied warranty of 23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 General Public License for more details. 25 26 You should have received copies of the GNU General Public License and 27 the GNU Lesser General Public License along with this program. If 28 not, see <http://www.gnu.org/licenses/>. */ 29 30 #ifdef HAVE_CONFIG_H 31 # include <config.h> 32 #endif 33 34 #include <inttypes.h> 35 #include <stdio.h> 36 #include <string.h> 37 #include <libeblP.h> 38 39 40 void 41 ebl_object_note (ebl, name, type, descsz, desc) 42 Ebl *ebl; 43 const char *name; 44 uint32_t type; 45 uint32_t descsz; 46 const char *desc; 47 { 48 if (! ebl->object_note (name, type, descsz, desc)) 49 /* The machine specific function did not know this type. */ 50 51 if (strcmp ("stapsdt", name) == 0) 52 { 53 if (type != 3) 54 { 55 printf (gettext ("unknown SDT version %u\n"), type); 56 return; 57 } 58 59 /* Descriptor starts with three addresses, pc, base ref and 60 semaphore. Then three zero terminated strings provider, 61 name and arguments. */ 62 63 union 64 { 65 Elf64_Addr a64[3]; 66 Elf32_Addr a32[3]; 67 } addrs; 68 69 size_t addrs_size = gelf_fsize (ebl->elf, ELF_T_ADDR, 3, EV_CURRENT); 70 if (descsz < addrs_size + 3) 71 { 72 invalid_sdt: 73 printf (gettext ("invalid SDT probe descriptor\n")); 74 return; 75 } 76 77 Elf_Data src = 78 { 79 .d_type = ELF_T_ADDR, .d_version = EV_CURRENT, 80 .d_buf = (void *) desc, .d_size = addrs_size 81 }; 82 83 Elf_Data dst = 84 { 85 .d_type = ELF_T_ADDR, .d_version = EV_CURRENT, 86 .d_buf = &addrs, .d_size = addrs_size 87 }; 88 89 if (gelf_xlatetom (ebl->elf, &dst, &src, 90 elf_getident (ebl->elf, NULL)[EI_DATA]) == NULL) 91 { 92 printf ("%s\n", elf_errmsg (-1)); 93 return; 94 } 95 96 const char *provider = desc + addrs_size; 97 const char *pname = memchr (provider, '\0', desc + descsz - provider); 98 if (pname == NULL) 99 goto invalid_sdt; 100 101 ++pname; 102 const char *args = memchr (pname, '\0', desc + descsz - pname); 103 if (args == NULL || 104 memchr (++args, '\0', desc + descsz - pname) != desc + descsz - 1) 105 goto invalid_sdt; 106 107 GElf_Addr pc; 108 GElf_Addr base; 109 GElf_Addr sem; 110 if (gelf_getclass (ebl->elf) == ELFCLASS32) 111 { 112 pc = addrs.a32[0]; 113 base = addrs.a32[1]; 114 sem = addrs.a32[2]; 115 } 116 else 117 { 118 pc = addrs.a64[0]; 119 base = addrs.a64[1]; 120 sem = addrs.a64[2]; 121 } 122 123 printf (gettext (" PC: ")); 124 printf ("%#" PRIx64 ",", pc); 125 printf (gettext (" Base: ")); 126 printf ("%#" PRIx64 ",", base); 127 printf (gettext (" Semaphore: ")); 128 printf ("%#" PRIx64 "\n", sem); 129 printf (gettext (" Provider: ")); 130 printf ("%s,", provider); 131 printf (gettext (" Name: ")); 132 printf ("%s,", pname); 133 printf (gettext (" Args: ")); 134 printf ("'%s'\n", args); 135 return; 136 } 137 138 switch (type) 139 { 140 case NT_GNU_BUILD_ID: 141 if (strcmp (name, "GNU") == 0 && descsz > 0) 142 { 143 printf (gettext (" Build ID: ")); 144 uint_fast32_t i; 145 for (i = 0; i < descsz - 1; ++i) 146 printf ("%02" PRIx8, (uint8_t) desc[i]); 147 printf ("%02" PRIx8 "\n", (uint8_t) desc[i]); 148 } 149 break; 150 151 case NT_GNU_GOLD_VERSION: 152 if (strcmp (name, "GNU") == 0 && descsz > 0) 153 /* A non-null terminated version string. */ 154 printf (gettext (" Linker version: %.*s\n"), 155 (int) descsz, desc); 156 break; 157 158 case NT_GNU_ABI_TAG: 159 if (strcmp (name, "GNU") == 0 && descsz >= 8 && descsz % 4 == 0) 160 { 161 Elf_Data in = 162 { 163 .d_version = EV_CURRENT, 164 .d_type = ELF_T_WORD, 165 .d_size = descsz, 166 .d_buf = (void *) desc 167 }; 168 uint32_t buf[descsz / 4]; 169 Elf_Data out = 170 { 171 .d_version = EV_CURRENT, 172 .d_type = ELF_T_WORD, 173 .d_size = descsz, 174 .d_buf = buf 175 }; 176 177 if (elf32_xlatetom (&out, &in, ebl->data) != NULL) 178 { 179 const char *os; 180 switch (buf[0]) 181 { 182 case ELF_NOTE_OS_LINUX: 183 os = "Linux"; 184 break; 185 186 case ELF_NOTE_OS_GNU: 187 os = "GNU"; 188 break; 189 190 case ELF_NOTE_OS_SOLARIS2: 191 os = "Solaris"; 192 break; 193 194 case ELF_NOTE_OS_FREEBSD: 195 os = "FreeBSD"; 196 break; 197 198 default: 199 os = "???"; 200 break; 201 } 202 203 printf (gettext (" OS: %s, ABI: "), os); 204 for (size_t cnt = 1; cnt < descsz / 4; ++cnt) 205 { 206 if (cnt > 1) 207 putchar_unlocked ('.'); 208 printf ("%" PRIu32, buf[cnt]); 209 } 210 putchar_unlocked ('\n'); 211 } 212 break; 213 } 214 /* FALLTHROUGH */ 215 216 default: 217 /* Unknown type. */ 218 break; 219 } 220 } 221
