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 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 48 struct netbsd_core_struct 49 { 50 struct core core; 51 } *rawptr; 52 53 /* Handle NetBSD-style core dump file. */ 54 55 static const bfd_target * 56 netbsd_core_file_p (bfd *abfd) 57 { 58 int val; 59 unsigned i; 60 file_ptr offset; 61 asection *asect; 62 struct core core; 63 struct coreseg coreseg; 64 bfd_size_type amt = sizeof core; 65 66 val = bfd_bread (&core, amt, abfd); 67 if (val != sizeof core) 68 { 69 /* Too small to be a core file. */ 70 bfd_set_error (bfd_error_wrong_format); 71 return 0; 72 } 73 74 if (CORE_GETMAGIC (core) != COREMAGIC) 75 { 76 bfd_set_error (bfd_error_wrong_format); 77 return 0; 78 } 79 80 amt = sizeof (struct netbsd_core_struct); 81 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt); 82 if (rawptr == NULL) 83 return 0; 84 85 rawptr->core = core; 86 abfd->tdata.netbsd_core_data = rawptr; 87 88 offset = core.c_hdrsize; 89 for (i = 0; i < core.c_nseg; i++) 90 { 91 const char *sname; 92 flagword flags; 93 94 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 95 goto punt; 96 97 val = bfd_bread (&coreseg, sizeof coreseg, abfd); 98 if (val != sizeof coreseg) 99 { 100 bfd_set_error (bfd_error_file_truncated); 101 goto punt; 102 } 103 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC) 104 { 105 bfd_set_error (bfd_error_wrong_format); 106 goto punt; 107 } 108 109 offset += core.c_seghdrsize; 110 111 switch (CORE_GETFLAG (coreseg)) 112 { 113 case CORE_CPU: 114 sname = ".reg"; 115 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 116 break; 117 case CORE_DATA: 118 sname = ".data"; 119 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 120 break; 121 case CORE_STACK: 122 sname = ".stack"; 123 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 124 break; 125 default: 126 sname = ".unknown"; 127 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 128 break; 129 } 130 asect = bfd_make_section_anyway_with_flags (abfd, sname, flags); 131 if (asect == NULL) 132 goto punt; 133 134 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 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 163 asect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", 164 flags); 165 if (asect == NULL) 166 goto punt; 167 168 asect->size = coreseg.c_size - wcookie_offset; 169 asect->vma = 0; 170 asect->filepos = offset + wcookie_offset; 171 asect->alignment_power = 2; 172 } 173 } 174 175 offset += coreseg.c_size; 176 } 177 178 /* Set architecture from machine ID. */ 179 switch (CORE_GETMID (core)) 180 { 181 case M_ALPHA_NETBSD: 182 bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); 183 break; 184 185 case M_ARM6_NETBSD: 186 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3); 187 break; 188 189 case M_X86_64_NETBSD: 190 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); 191 break; 192 193 case M_386_NETBSD: 194 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386); 195 break; 196 197 case M_68K_NETBSD: 198 case M_68K4K_NETBSD: 199 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); 200 break; 201 202 case M_88K_OPENBSD: 203 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0); 204 break; 205 206 case M_HPPA_OPENBSD: 207 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11); 208 break; 209 210 case M_POWERPC_NETBSD: 211 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc); 212 break; 213 214 case M_SPARC_NETBSD: 215 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 216 break; 217 218 case M_SPARC64_NETBSD: 219 case M_SPARC64_OPENBSD: 220 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); 221 break; 222 223 case M_VAX_NETBSD: 224 case M_VAX4K_NETBSD: 225 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0); 226 break; 227 } 228 229 /* OK, we believe you. You're a core file (sure, sure). */ 230 return abfd->xvec; 231 232 punt: 233 bfd_release (abfd, abfd->tdata.any); 234 abfd->tdata.any = NULL; 235 bfd_section_list_clear (abfd); 236 return 0; 237 } 238 239 static char* 240 netbsd_core_file_failing_command (bfd *abfd) 241 { 242 /*return core_command (abfd);*/ 243 return abfd->tdata.netbsd_core_data->core.c_name; 244 } 245 246 static int 247 netbsd_core_file_failing_signal (bfd *abfd) 248 { 249 /*return core_signal (abfd);*/ 250 return abfd->tdata.netbsd_core_data->core.c_signo; 251 } 252 253 /* If somebody calls any byte-swapping routines, shoot them. */ 254 255 static void 256 swap_abort (void) 257 { 258 /* This way doesn't require any declaration for ANSI to fuck up. */ 259 abort (); 260 } 261 262 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 263 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 264 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 265 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 266 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 267 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 268 269 const bfd_target netbsd_core_vec = 270 { 271 "netbsd-core", 272 bfd_target_unknown_flavour, 273 BFD_ENDIAN_UNKNOWN, /* Target byte order. */ 274 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ 275 (HAS_RELOC | EXEC_P | /* Object flags. */ 276 HAS_LINENO | HAS_DEBUG | 277 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 278 (SEC_HAS_CONTENTS | /* Section flags. */ 279 SEC_ALLOC | SEC_LOAD | SEC_RELOC), 280 0, /* Symbol prefix. */ 281 ' ', /* ar_pad_char. */ 282 16, /* ar_max_namelen. */ 283 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */ 284 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */ 285 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */ 286 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */ 287 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */ 288 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */ 289 290 { /* bfd_check_format. */ 291 _bfd_dummy_target, /* Unknown format. */ 292 _bfd_dummy_target, /* Object file. */ 293 _bfd_dummy_target, /* Archive. */ 294 netbsd_core_file_p /* A core file. */ 295 }, 296 { /* bfd_set_format. */ 297 bfd_false, bfd_false, 298 bfd_false, bfd_false 299 }, 300 { /* bfd_write_contents. */ 301 bfd_false, bfd_false, 302 bfd_false, bfd_false 303 }, 304 305 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 306 BFD_JUMP_TABLE_COPY (_bfd_generic), 307 BFD_JUMP_TABLE_CORE (netbsd), 308 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 309 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 310 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 311 BFD_JUMP_TABLE_WRITE (_bfd_generic), 312 BFD_JUMP_TABLE_LINK (_bfd_nolink), 313 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 314 315 NULL, 316 317 (PTR) 0 /* Backend_data. */ 318 }; 319