1 /* BFD back end for NetBSD style core files 2 Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001, 3 2002, 2003, 2004, 2005, 2006, 2007, 2012 4 Free Software Foundation, Inc. 5 Written by Paul Kranenburg, EUR 6 7 This file is part of BFD, the Binary File Descriptor library. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 22 MA 02110-1301, USA. */ 23 24 #include "sysdep.h" 25 #include "bfd.h" 26 #include "libbfd.h" 27 #include "libaout.h" /* BFD a.out internal data structures. */ 28 29 #include <sys/param.h> 30 #include <sys/dir.h> 31 #include <signal.h> 32 #include <sys/core.h> 33 34 /* The machine ID for OpenBSD/sparc64 and older versions of 35 NetBSD/sparc64 overlaps with M_MIPS1. */ 36 #define M_SPARC64_OPENBSD M_MIPS1 37 38 /* Offset of StackGhost cookie within `struct md_coredump' on 39 OpenBSD/sparc. */ 40 #define SPARC_WCOOKIE_OFFSET 344 41 42 /* Offset of StackGhost cookie within `struct md_coredump' on 43 OpenBSD/sparc64. */ 44 #define SPARC64_WCOOKIE_OFFSET 832 45 46 #define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p 47 #define netbsd_core_file_pid _bfd_nocore_core_file_pid 48 49 struct netbsd_core_struct 50 { 51 struct core core; 52 } *rawptr; 53 54 /* Handle NetBSD-style core dump file. */ 55 56 static const bfd_target * 57 netbsd_core_file_p (bfd *abfd) 58 { 59 int val; 60 unsigned i; 61 file_ptr offset; 62 asection *asect; 63 struct core core; 64 struct coreseg coreseg; 65 bfd_size_type amt = sizeof core; 66 67 val = bfd_bread (&core, amt, abfd); 68 if (val != sizeof core) 69 { 70 /* Too small to be a core file. */ 71 bfd_set_error (bfd_error_wrong_format); 72 return 0; 73 } 74 75 if (CORE_GETMAGIC (core) != COREMAGIC) 76 { 77 bfd_set_error (bfd_error_wrong_format); 78 return 0; 79 } 80 81 amt = sizeof (struct netbsd_core_struct); 82 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt); 83 if (rawptr == NULL) 84 return 0; 85 86 rawptr->core = core; 87 abfd->tdata.netbsd_core_data = rawptr; 88 89 offset = core.c_hdrsize; 90 for (i = 0; i < core.c_nseg; i++) 91 { 92 const char *sname; 93 flagword flags; 94 95 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 96 goto punt; 97 98 val = bfd_bread (&coreseg, sizeof coreseg, abfd); 99 if (val != sizeof coreseg) 100 { 101 bfd_set_error (bfd_error_file_truncated); 102 goto punt; 103 } 104 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC) 105 { 106 bfd_set_error (bfd_error_wrong_format); 107 goto punt; 108 } 109 110 offset += core.c_seghdrsize; 111 112 switch (CORE_GETFLAG (coreseg)) 113 { 114 case CORE_CPU: 115 sname = ".reg"; 116 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 117 break; 118 case CORE_DATA: 119 sname = ".data"; 120 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 121 break; 122 case CORE_STACK: 123 sname = ".stack"; 124 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 125 break; 126 default: 127 sname = ".unknown"; 128 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 129 break; 130 } 131 asect = bfd_make_section_anyway_with_flags (abfd, sname, flags); 132 if (asect == NULL) 133 goto punt; 134 135 asect->size = coreseg.c_size; 136 asect->vma = coreseg.c_addr; 137 asect->filepos = offset; 138 asect->alignment_power = 2; 139 140 if (CORE_GETFLAG (coreseg) == CORE_CPU) 141 { 142 bfd_size_type wcookie_offset; 143 144 switch (CORE_GETMID (core)) 145 { 146 case M_SPARC_NETBSD: 147 wcookie_offset = SPARC_WCOOKIE_OFFSET; 148 break; 149 case M_SPARC64_OPENBSD: 150 wcookie_offset = SPARC64_WCOOKIE_OFFSET; 151 break; 152 default: 153 wcookie_offset = 0; 154 break; 155 } 156 157 if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset) 158 { 159 /* Truncate the .reg section. */ 160 asect->size = wcookie_offset; 161 162 /* And create the .wcookie section. */ 163 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 164 asect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", 165 flags); 166 if (asect == NULL) 167 goto punt; 168 169 asect->size = coreseg.c_size - wcookie_offset; 170 asect->vma = 0; 171 asect->filepos = offset + wcookie_offset; 172 asect->alignment_power = 2; 173 } 174 } 175 176 offset += coreseg.c_size; 177 } 178 179 /* Set architecture from machine ID. */ 180 switch (CORE_GETMID (core)) 181 { 182 case M_ALPHA_NETBSD: 183 bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); 184 break; 185 186 case M_ARM6_NETBSD: 187 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3); 188 break; 189 190 case M_X86_64_NETBSD: 191 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); 192 break; 193 194 case M_386_NETBSD: 195 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386); 196 break; 197 198 case M_68K_NETBSD: 199 case M_68K4K_NETBSD: 200 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); 201 break; 202 203 case M_88K_OPENBSD: 204 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0); 205 break; 206 207 case M_HPPA_OPENBSD: 208 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11); 209 break; 210 211 case M_POWERPC_NETBSD: 212 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc); 213 break; 214 215 case M_SPARC_NETBSD: 216 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 217 break; 218 219 case M_SPARC64_NETBSD: 220 case M_SPARC64_OPENBSD: 221 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); 222 break; 223 224 case M_VAX_NETBSD: 225 case M_VAX4K_NETBSD: 226 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0); 227 break; 228 } 229 230 /* OK, we believe you. You're a core file (sure, sure). */ 231 return abfd->xvec; 232 233 punt: 234 bfd_release (abfd, abfd->tdata.any); 235 abfd->tdata.any = NULL; 236 bfd_section_list_clear (abfd); 237 return 0; 238 } 239 240 static char* 241 netbsd_core_file_failing_command (bfd *abfd) 242 { 243 /*return core_command (abfd);*/ 244 return abfd->tdata.netbsd_core_data->core.c_name; 245 } 246 247 static int 248 netbsd_core_file_failing_signal (bfd *abfd) 249 { 250 /*return core_signal (abfd);*/ 251 return abfd->tdata.netbsd_core_data->core.c_signo; 252 } 253 254 /* If somebody calls any byte-swapping routines, shoot them. */ 255 256 static void 257 swap_abort (void) 258 { 259 /* This way doesn't require any declaration for ANSI to fuck up. */ 260 abort (); 261 } 262 263 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 264 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 265 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 266 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 267 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 268 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 269 270 const bfd_target netbsd_core_vec = 271 { 272 "netbsd-core", 273 bfd_target_unknown_flavour, 274 BFD_ENDIAN_UNKNOWN, /* Target byte order. */ 275 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ 276 (HAS_RELOC | EXEC_P | /* Object flags. */ 277 HAS_LINENO | HAS_DEBUG | 278 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 279 (SEC_HAS_CONTENTS | /* Section flags. */ 280 SEC_ALLOC | SEC_LOAD | SEC_RELOC), 281 0, /* Symbol prefix. */ 282 ' ', /* ar_pad_char. */ 283 16, /* ar_max_namelen. */ 284 0, /* Match priority. */ 285 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */ 286 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */ 287 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */ 288 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */ 289 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */ 290 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */ 291 292 { /* bfd_check_format. */ 293 _bfd_dummy_target, /* Unknown format. */ 294 _bfd_dummy_target, /* Object file. */ 295 _bfd_dummy_target, /* Archive. */ 296 netbsd_core_file_p /* A core file. */ 297 }, 298 { /* bfd_set_format. */ 299 bfd_false, bfd_false, 300 bfd_false, bfd_false 301 }, 302 { /* bfd_write_contents. */ 303 bfd_false, bfd_false, 304 bfd_false, bfd_false 305 }, 306 307 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 308 BFD_JUMP_TABLE_COPY (_bfd_generic), 309 BFD_JUMP_TABLE_CORE (netbsd), 310 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 311 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 312 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 313 BFD_JUMP_TABLE_WRITE (_bfd_generic), 314 BFD_JUMP_TABLE_LINK (_bfd_nolink), 315 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 316 317 NULL, 318 319 NULL /* Backend_data. */ 320 }; 321