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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 CORE_WCOOKIE_OFFSET 344 40 41struct netbsd_core_struct 42{ 43 struct core core; 44} *rawptr; 45 46/* Forward declarations. */ 47 48static const bfd_target *netbsd_core_file_p 49 PARAMS ((bfd *abfd)); 50static char *netbsd_core_file_failing_command 51 PARAMS ((bfd *abfd)); 52static int netbsd_core_file_failing_signal 53 PARAMS ((bfd *abfd)); 54static bfd_boolean netbsd_core_file_matches_executable_p 55 PARAMS ((bfd *core_bfd, bfd *exec_bfd)); 56static void swap_abort 57 PARAMS ((void)); 58 59/* Handle NetBSD-style core dump file. */ 60 61static const bfd_target * 62netbsd_core_file_p (abfd) 63 bfd *abfd; 64 65{ 66 int i, val; 67 file_ptr offset; 68 asection *asect; 69 struct core core; 70 struct coreseg coreseg; 71 bfd_size_type amt = sizeof core; 72 73 val = bfd_bread ((void *) &core, amt, abfd); 74 if (val != sizeof core) 75 { 76 /* Too small to be a core file. */ 77 bfd_set_error (bfd_error_wrong_format); 78 return 0; 79 } 80 81 if (CORE_GETMAGIC (core) != COREMAGIC) 82 { 83 bfd_set_error (bfd_error_wrong_format); 84 return 0; 85 } 86 87 amt = sizeof (struct netbsd_core_struct); 88 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt); 89 if (rawptr == NULL) 90 return 0; 91 92 rawptr->core = core; 93 abfd->tdata.netbsd_core_data = rawptr; 94 95 offset = core.c_hdrsize; 96 for (i = 0; i < core.c_nseg; i++) 97 { 98 const char *sname; 99 flagword flags; 100 101 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 102 goto punt; 103 104 val = bfd_bread ((void *) &coreseg, (bfd_size_type) sizeof coreseg, abfd); 105 if (val != sizeof coreseg) 106 { 107 bfd_set_error (bfd_error_file_truncated); 108 goto punt; 109 } 110 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC) 111 { 112 bfd_set_error (bfd_error_wrong_format); 113 goto punt; 114 } 115 116 offset += core.c_seghdrsize; 117 118 switch (CORE_GETFLAG (coreseg)) 119 { 120 case CORE_CPU: 121 sname = ".reg"; 122 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 123 break; 124 case CORE_DATA: 125 sname = ".data"; 126 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 127 break; 128 case CORE_STACK: 129 sname = ".stack"; 130 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 131 break; 132 default: 133 sname = ".unknown"; 134 flags = SEC_ALLOC + SEC_HAS_CONTENTS; 135 break; 136 } 137 asect = bfd_make_section_anyway (abfd, sname); 138 if (asect == NULL) 139 goto punt; 140 141 asect->flags = flags; 142 asect->size = coreseg.c_size; 143 asect->vma = coreseg.c_addr; 144 asect->filepos = offset; 145 asect->alignment_power = 2; 146 147 if (CORE_GETMID (core) == M_SPARC_NETBSD 148 && CORE_GETFLAG (coreseg) == CORE_CPU 149 && coreseg.c_size > CORE_WCOOKIE_OFFSET) 150 { 151 /* Truncate the .reg section. */ 152 asect->size = CORE_WCOOKIE_OFFSET; 153 154 /* And create the .wcookie section. */ 155 asect = bfd_make_section_anyway (abfd, ".wcookie"); 156 if (asect == NULL) 157 goto punt; 158 159 asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS; 160 asect->size = 4; 161 asect->vma = 0; 162 asect->filepos = offset + CORE_WCOOKIE_OFFSET; 163 asect->alignment_power = 2; 164 } 165 166 offset += coreseg.c_size; 167 } 168 169 /* Set architecture from machine ID. */ 170 switch (CORE_GETMID (core)) 171 { 172 case M_ALPHA_NETBSD: 173 bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); 174 break; 175 176 case M_ARM6_NETBSD: 177 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3); 178 break; 179 180 case M_X86_64_NETBSD: 181 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); 182 break; 183 184 case M_386_NETBSD: 185 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386); 186 break; 187 188 case M_68K_NETBSD: 189 case M_68K4K_NETBSD: 190 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); 191 break; 192 193 case M_88K_OPENBSD: 194 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0); 195 break; 196 197 case M_HPPA_OPENBSD: 198 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11); 199 break; 200 201 case M_POWERPC_NETBSD: 202 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc); 203 break; 204 205 case M_SPARC_NETBSD: 206 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); 207 break; 208 209 case M_SPARC64_NETBSD: 210 case M_SPARC64_OPENBSD: 211 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); 212 break; 213 214 case M_VAX_NETBSD: 215 case M_VAX4K_NETBSD: 216 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0); 217 break; 218 } 219 220 /* OK, we believe you. You're a core file (sure, sure). */ 221 return abfd->xvec; 222 223 punt: 224 bfd_release (abfd, abfd->tdata.any); 225 abfd->tdata.any = NULL; 226 bfd_section_list_clear (abfd); 227 return 0; 228} 229 230static char* 231netbsd_core_file_failing_command (abfd) 232 bfd *abfd; 233{ 234 /*return core_command (abfd);*/ 235 return abfd->tdata.netbsd_core_data->core.c_name; 236} 237 238static int 239netbsd_core_file_failing_signal (abfd) 240 bfd *abfd; 241{ 242 /*return core_signal (abfd);*/ 243 return abfd->tdata.netbsd_core_data->core.c_signo; 244} 245 246static bfd_boolean 247netbsd_core_file_matches_executable_p (core_bfd, exec_bfd) 248 bfd *core_bfd ATTRIBUTE_UNUSED; 249 bfd *exec_bfd ATTRIBUTE_UNUSED; 250{ 251 /* FIXME, We have no way of telling at this point. */ 252 return TRUE; 253} 254 255/* If somebody calls any byte-swapping routines, shoot them. */ 256 257static void 258swap_abort () 259{ 260 /* This way doesn't require any declaration for ANSI to fuck up. */ 261 abort (); 262} 263 264#define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 265#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 266#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 267#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 268#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 269#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 270 271const bfd_target netbsd_core_vec = 272 { 273 "netbsd-core", 274 bfd_target_unknown_flavour, 275 BFD_ENDIAN_UNKNOWN, /* Target byte order. */ 276 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ 277 (HAS_RELOC | EXEC_P | /* Object flags. */ 278 HAS_LINENO | HAS_DEBUG | 279 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 280 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ 281 0, /* Symbol prefix. */ 282 ' ', /* ar_pad_char. */ 283 16, /* ar_max_namelen. */ 284 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */ 285 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */ 286 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */ 287 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */ 288 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */ 289 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */ 290 291 { /* bfd_check_format. */ 292 _bfd_dummy_target, /* Unknown format. */ 293 _bfd_dummy_target, /* Object file. */ 294 _bfd_dummy_target, /* Archive. */ 295 netbsd_core_file_p /* A core file. */ 296 }, 297 { /* bfd_set_format. */ 298 bfd_false, bfd_false, 299 bfd_false, bfd_false 300 }, 301 { /* bfd_write_contents. */ 302 bfd_false, bfd_false, 303 bfd_false, bfd_false 304 }, 305 306 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 307 BFD_JUMP_TABLE_COPY (_bfd_generic), 308 BFD_JUMP_TABLE_CORE (netbsd), 309 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 310 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 311 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 312 BFD_JUMP_TABLE_WRITE (_bfd_generic), 313 BFD_JUMP_TABLE_LINK (_bfd_nolink), 314 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 315 316 NULL, 317 318 (PTR) 0 /* Backend_data. */ 319 }; 320