| 1 | /* BFD back end for NetBSD style core files |
| 2 | Copyright 1988, 89, 91, 92, 93, 96, 1998 Free Software Foundation, Inc. |
| 3 | Written by Paul Kranenburg, EUR |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "bfd.h" |
| 22 | #include "sysdep.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "libaout.h" /* BFD a.out internal data structures */ |
| 25 | |
| 26 | #include <sys/param.h> |
| 27 | #include <sys/dir.h> |
| 28 | #include <signal.h> |
| 29 | #include <sys/core.h> |
| 30 | |
| 31 | /* |
| 32 | * FIXME: On NetBSD/sparc CORE_FPU_OFFSET should be (sizeof(struct trapframe)) |
| 33 | */ |
| 34 | |
| 35 | struct netbsd_core_struct { |
| 36 | struct core core; |
| 37 | } *rawptr; |
| 38 | |
| 39 | /* forward declarations */ |
| 40 | |
| 41 | static const bfd_target * netbsd_core_file_p PARAMS ((bfd *abfd)); |
| 42 | static char * netbsd_core_file_failing_command PARAMS ((bfd *abfd)); |
| 43 | static int netbsd_core_file_failing_signal PARAMS ((bfd *abfd)); |
| 44 | static boolean netbsd_core_file_matches_executable_p |
| 45 | PARAMS ((bfd *core_bfd, bfd *exec_bfd)); |
| 46 | static void swap_abort PARAMS ((void)); |
| 47 | |
| 48 | /* Handle NetBSD-style core dump file. */ |
| 49 | |
| 50 | /* ARGSUSED */ |
| 51 | static const bfd_target * |
| 52 | netbsd_core_file_p (abfd) |
| 53 | bfd *abfd; |
| 54 | |
| 55 | { |
| 56 | int i, val, offset; |
| 57 | asection *asect, *asect2; |
| 58 | struct core core; |
| 59 | struct coreseg coreseg; |
| 60 | |
| 61 | val = bfd_read ((void *)&core, 1, sizeof core, abfd); |
| 62 | if (val != sizeof core) { |
| 63 | /* Too small to be a core file */ |
| 64 | bfd_set_error(bfd_error_wrong_format); |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | if (CORE_GETMAGIC(core) != COREMAGIC) { |
| 69 | bfd_set_error(bfd_error_wrong_format); |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | rawptr = (struct netbsd_core_struct *) |
| 74 | bfd_zalloc (abfd, sizeof (struct netbsd_core_struct)); |
| 75 | if (rawptr == NULL) { |
| 76 | bfd_set_error(bfd_error_no_memory); |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | rawptr->core = core; |
| 81 | abfd->tdata.netbsd_core_data = rawptr; |
| 82 | |
| 83 | offset = core.c_hdrsize; |
| 84 | for (i = 0; i < core.c_nseg; i++) { |
| 85 | |
| 86 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
| 87 | goto punt; |
| 88 | |
| 89 | val = bfd_read ((void *)&coreseg, 1, sizeof coreseg, abfd); |
| 90 | if (val != sizeof coreseg) { |
| 91 | bfd_set_error(bfd_error_file_truncated); |
| 92 | goto punt; |
| 93 | } |
| 94 | if (CORE_GETMAGIC(coreseg) != CORESEGMAGIC) { |
| 95 | bfd_set_error(bfd_error_wrong_format); |
| 96 | goto punt; |
| 97 | } |
| 98 | |
| 99 | offset += core.c_seghdrsize; |
| 100 | |
| 101 | asect = (asection *) bfd_zalloc (abfd, sizeof(asection)); |
| 102 | if (asect == NULL) { |
| 103 | bfd_set_error(bfd_error_no_memory); |
| 104 | goto punt; |
| 105 | } |
| 106 | |
| 107 | asect->_raw_size = coreseg.c_size; |
| 108 | asect->vma = coreseg.c_addr; |
| 109 | asect->filepos = offset; |
| 110 | asect->alignment_power = 2; |
| 111 | asect->next = abfd->sections; |
| 112 | abfd->sections = asect; |
| 113 | abfd->section_count++; |
| 114 | offset += coreseg.c_size; |
| 115 | |
| 116 | switch (CORE_GETFLAG(coreseg)) { |
| 117 | case CORE_CPU: |
| 118 | asect->name = ".reg"; |
| 119 | asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 120 | #ifdef CORE_FPU_OFFSET |
| 121 | /* Hackish... */ |
| 122 | asect->_raw_size = CORE_FPU_OFFSET; |
| 123 | asect2 = (asection *)bfd_zalloc (abfd, |
| 124 | sizeof (asection)); |
| 125 | if (asect2 == NULL) { |
| 126 | bfd_set_error(bfd_error_no_memory); |
| 127 | goto punt; |
| 128 | } |
| 129 | asect2->_raw_size = coreseg.c_size - CORE_FPU_OFFSET; |
| 130 | asect2->vma = 0; |
| 131 | asect2->filepos = asect->filepos + CORE_FPU_OFFSET; |
| 132 | asect2->alignment_power = 2; |
| 133 | asect2->next = abfd->sections; |
| 134 | asect2->name = ".reg2"; |
| 135 | asect2->flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 136 | abfd->sections = asect2; |
| 137 | abfd->section_count++; |
| 138 | #endif |
| 139 | |
| 140 | break; |
| 141 | case CORE_DATA: |
| 142 | asect->name = ".data"; |
| 143 | asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS; |
| 144 | break; |
| 145 | case CORE_STACK: |
| 146 | asect->name = ".stack"; |
| 147 | asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS; |
| 148 | break; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /* OK, we believe you. You're a core file (sure, sure). */ |
| 153 | return abfd->xvec; |
| 154 | |
| 155 | punt: { |
| 156 | asection *anext; |
| 157 | for (asect = abfd->sections; asect; asect = anext) { |
| 158 | anext = asect->next; |
| 159 | free((void *)asect); |
| 160 | } |
| 161 | } |
| 162 | free ((void *)rawptr); |
| 163 | abfd->tdata.netbsd_core_data = NULL; |
| 164 | abfd->sections = NULL; |
| 165 | abfd->section_count = 0; |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | static char* |
| 170 | netbsd_core_file_failing_command (abfd) |
| 171 | bfd *abfd; |
| 172 | { |
| 173 | /*return core_command (abfd);*/ |
| 174 | return abfd->tdata.netbsd_core_data->core.c_name; |
| 175 | } |
| 176 | |
| 177 | /* ARGSUSED */ |
| 178 | static int |
| 179 | netbsd_core_file_failing_signal (abfd) |
| 180 | bfd *abfd; |
| 181 | { |
| 182 | /*return core_signal (abfd);*/ |
| 183 | return abfd->tdata.netbsd_core_data->core.c_signo; |
| 184 | } |
| 185 | |
| 186 | /* ARGSUSED */ |
| 187 | static boolean |
| 188 | netbsd_core_file_matches_executable_p (core_bfd, exec_bfd) |
| 189 | bfd *core_bfd, *exec_bfd; |
| 190 | { |
| 191 | return true; /* FIXME, We have no way of telling at this point */ |
| 192 | } |
| 193 | \f |
| 194 | /* If somebody calls any byte-swapping routines, shoot them. */ |
| 195 | static void |
| 196 | swap_abort() |
| 197 | { |
| 198 | abort(); /* This way doesn't require any declaration for ANSI to fuck up */ |
| 199 | } |
| 200 | #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) |
| 201 | #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) |
| 202 | #define NO_SIGNED_GET \ |
| 203 | ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) |
| 204 | |
| 205 | const bfd_target netbsd_core_vec = |
| 206 | { |
| 207 | "netbsd-core", |
| 208 | bfd_target_unknown_flavour, |
| 209 | BFD_ENDIAN_UNKNOWN, /* target byte order */ |
| 210 | BFD_ENDIAN_UNKNOWN, /* target headers byte order */ |
| 211 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 212 | HAS_LINENO | HAS_DEBUG | |
| 213 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 214 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 215 | 0, /* symbol prefix */ |
| 216 | ' ', /* ar_pad_char */ |
| 217 | 16, /* ar_max_namelen */ |
| 218 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ |
| 219 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ |
| 220 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ |
| 221 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ |
| 222 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ |
| 223 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ |
| 224 | |
| 225 | { /* bfd_check_format */ |
| 226 | _bfd_dummy_target, /* unknown format */ |
| 227 | _bfd_dummy_target, /* object file */ |
| 228 | _bfd_dummy_target, /* archive */ |
| 229 | netbsd_core_file_p /* a core file */ |
| 230 | }, |
| 231 | { /* bfd_set_format */ |
| 232 | bfd_false, bfd_false, |
| 233 | bfd_false, bfd_false |
| 234 | }, |
| 235 | { /* bfd_write_contents */ |
| 236 | bfd_false, bfd_false, |
| 237 | bfd_false, bfd_false |
| 238 | }, |
| 239 | |
| 240 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
| 241 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 242 | BFD_JUMP_TABLE_CORE (netbsd), |
| 243 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 244 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
| 245 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 246 | BFD_JUMP_TABLE_WRITE (_bfd_generic), |
| 247 | BFD_JUMP_TABLE_LINK (_bfd_nolink), |
| 248 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 249 | |
| 250 | (PTR) 0 /* backend_data */ |
| 251 | }; |