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 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 2 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, MA 02110-1301, USA. */ 22 23 #include "bfd.h" 24 #include "sysdep.h" 25 #include "libbfd.h" 26 #include "libaout.h" /* BFD a.out internal data structures. */ 27 28 #include <sys/param.h> 29 #include <sys/dir.h> 30 #include <signal.h> 31 #include <sys/core.h> 32 33 /* The machine ID for OpenBSD/sparc64 and older versions of 34 NetBSD/sparc64 overlaps with M_MIPS1. */ 35 #define M_SPARC64_OPENBSD M_MIPS1 36 37 /* Offset of StackGhost cookie within `struct md_coredump' on 38 OpenBSD/sparc. */ 39 #define SPARC_WCOOKIE_OFFSET 344 40 41 /* Offset of StackGhost cookie within `struct md_coredump' on 42 OpenBSD/sparc64. */ 43 #define SPARC64_WCOOKIE_OFFSET 832 44 45 #define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p 46 47 struct netbsd_core_struct 48 { 49 struct core core; 50 } *rawptr; 51 52 /* Handle NetBSD-style core dump file. */ 53 54 static const bfd_target * 55 netbsd_core_file_p (bfd *abfd) 56 { 57 int val; 58 unsigned i; 59 file_ptr offset; 60 asection *asect; 61 struct core core; 62 struct coreseg coreseg; 63 bfd_size_type amt = sizeof core; 64 65 val = bfd_bread (&core, amt, abfd); 66 if (val != sizeof core) 67 { 68 /* Too small to be a core file. */ 69 bfd_set_error (bfd_error_wrong_format); 70 return 0; 71 } 72 73 if (CORE_GETMAGIC (core) != COREMAGIC) 74 { 75 bfd_set_error (bfd_error_wrong_format); 76 return 0; 77 } 78 79 amt = sizeof (struct netbsd_core_struct); 80 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt); 81 if (rawptr == NULL) 82 return 0; 83 84 rawptr->core = core; 85 abfd->tdata.netbsd_core_data = rawptr; 86 87 offset = core.c_hdrsize; 88 for (i = 0; i < core.c_nseg; i++) 89 { 90 const char *sname; 91 flagword flags; 92 93 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 94 goto punt; 95 96 val = bfd_bread (&coreseg, sizeof coreseg, abfd); 97 if (val != sizeof coreseg) 98 { 99 bfd_set_error (bfd_error_file_truncated); 100 goto punt; 101 } 102 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC) 103 { 104 bfd_set_error (bfd_error_wrong_format); 105 goto punt; 106 } 107 108 offset += core.c_seghdrsize; 109 110 switch (CORE_GETFLAG (coreseg)) 111 { 112 case CORE_CPU: 113 sname = ".reg"; 114 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 115 break; 116 case CORE_DATA: 117 sname = ".data"; 118 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 119 break; 120 case CORE_STACK: 121 sname = ".stack"; 122 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 123 break; 124 default: 125 sname = ".unknown"; 126 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 127 break; 128 } 129 asect = bfd_make_section_anyway (abfd, sname); 130 if (asect == NULL) 131 goto punt; 132 133 asect->flags = flags; 134 asect->size = coreseg.c_size; 135 asect->vma = coreseg.c_addr; 136 asect->filepos = offset; 137 asect->alignment_power = 2; 138 139 if (CORE_GETFLAG (coreseg) == CORE_CPU) 140 { 141 bfd_size_type wcookie_offset; 142 143 switch (CORE_GETMID (core)) 144 { 145 case M_SPARC_NETBSD: 146 wcookie_offset = SPARC_WCOOKIE_OFFSET; 147 break; 148 case M_SPARC64_OPENBSD: 149 wcookie_offset = SPARC64_WCOOKIE_OFFSET; 150 break; 151 default: 152 wcookie_offset = 0; 153 break; 154 } 155 156 if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset) 157 { 158 /* Truncate the .reg section. */ 159 asect->size = wcookie_offset; 160 161 /* And create the .wcookie section. */ 162 asect = bfd_make_section_anyway (abfd, ".wcookie"); 163 if (asect == NULL) 164 goto punt; 165 166 asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS; 167 asect->size = coreseg.c_size - wcookie_offset; 168 asect->vma = 0; 169 asect->filepos = offset + wcookie_offset; 170 asect->alignment_power = 2; 171 } 172 } 173 174 offset += coreseg.c_size; 175 } 176 177 /* Set architecture from machine ID. */ 178 switch (CORE_GETMID (core)) 179 { 180 case M_ALPHA_NETBSD: 181 bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); 182 break; 183 184 case M_ARM6_NETBSD: 185 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3); 186 break; 187 188 case M_X86_64_NETBSD: 189 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); 190 break; 191 192 case M_386_NETBSD: 193 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386); 194 break; 195 196 case M_68K_NETBSD: 197 case M_68K4K_NETBSD: 198 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); 199 break; 200 201 case M_88K_OPENBSD: 202 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0); 203 break; 204 205 case M_HPPA_OPENBSD: 206 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11); 207 break; 208 209 case M_POWERPC_NETBSD: 210 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc); 211 break; 212 213 case M_SPARC_NETBSD: 214 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 215 break; 216 217 case M_SPARC64_NETBSD: 218 case M_SPARC64_OPENBSD: 219 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); 220 break; 221 222 case M_VAX_NETBSD: 223 case M_VAX4K_NETBSD: 224 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0); 225 break; 226 } 227 228 /* OK, we believe you. You're a core file (sure, sure). */ 229 return abfd->xvec; 230 231 punt: 232 bfd_release (abfd, abfd->tdata.any); 233 abfd->tdata.any = NULL; 234 bfd_section_list_clear (abfd); 235 return 0; 236 } 237 238 static char* 239 netbsd_core_file_failing_command (bfd *abfd) 240 { 241 /*return core_command (abfd);*/ 242 return abfd->tdata.netbsd_core_data->core.c_name; 243 } 244 245 static int 246 netbsd_core_file_failing_signal (bfd *abfd) 247 { 248 /*return core_signal (abfd);*/ 249 return abfd->tdata.netbsd_core_data->core.c_signo; 250 } 251 252 /* If somebody calls any byte-swapping routines, shoot them. */ 253 254 static void 255 swap_abort (void) 256 { 257 /* This way doesn't require any declaration for ANSI to fuck up. */ 258 abort (); 259 } 260 261 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 262 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 263 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 264 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 265 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 266 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 267 268 const bfd_target netbsd_core_vec = 269 { 270 "netbsd-core", 271 bfd_target_unknown_flavour, 272 BFD_ENDIAN_UNKNOWN, /* Target byte order. */ 273 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ 274 (HAS_RELOC | EXEC_P | /* Object flags. */ 275 HAS_LINENO | HAS_DEBUG | 276 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 277 (SEC_HAS_CONTENTS | /* Section flags. */ 278 SEC_ALLOC | SEC_LOAD | SEC_RELOC), 279 0, /* Symbol prefix. */ 280 ' ', /* ar_pad_char. */ 281 16, /* ar_max_namelen. */ 282 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */ 283 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */ 284 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */ 285 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */ 286 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */ 287 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */ 288 289 { /* bfd_check_format. */ 290 _bfd_dummy_target, /* Unknown format. */ 291 _bfd_dummy_target, /* Object file. */ 292 _bfd_dummy_target, /* Archive. */ 293 netbsd_core_file_p /* A core file. */ 294 }, 295 { /* bfd_set_format. */ 296 bfd_false, bfd_false, 297 bfd_false, bfd_false 298 }, 299 { /* bfd_write_contents. */ 300 bfd_false, bfd_false, 301 bfd_false, bfd_false 302 }, 303 304 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 305 BFD_JUMP_TABLE_COPY (_bfd_generic), 306 BFD_JUMP_TABLE_CORE (netbsd), 307 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 308 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 309 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 310 BFD_JUMP_TABLE_WRITE (_bfd_generic), 311 BFD_JUMP_TABLE_LINK (_bfd_nolink), 312 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 313 314 NULL, 315 316 (PTR) 0 /* Backend_data. */ 317 }; 318