1 /* BFD back end for NetBSD style core files 2 Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000 3 Free Software Foundation, Inc. 4 Written by Paul Kranenburg, EUR 5 6 This file is part of BFD, the Binary File Descriptor library. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 21 22 #include "bfd.h" 23 #include "sysdep.h" 24 #include "libbfd.h" 25 #include "libaout.h" /* BFD a.out internal data structures */ 26 27 #include <sys/param.h> 28 #include <sys/dir.h> 29 #include <signal.h> 30 #include <sys/core.h> 31 32 /* 33 * FIXME: On NetBSD/sparc CORE_FPU_OFFSET should be (sizeof (struct trapframe)) 34 */ 35 36 struct netbsd_core_struct { 37 struct core core; 38 } *rawptr; 39 40 /* forward declarations */ 41 42 static const bfd_target * netbsd_core_file_p PARAMS ((bfd *abfd)); 43 static char * netbsd_core_file_failing_command PARAMS ((bfd *abfd)); 44 static int netbsd_core_file_failing_signal PARAMS ((bfd *abfd)); 45 static boolean netbsd_core_file_matches_executable_p 46 PARAMS ((bfd *core_bfd, bfd *exec_bfd)); 47 static void swap_abort PARAMS ((void)); 48 49 /* Handle NetBSD-style core dump file. */ 50 51 /* ARGSUSED */ 52 static const bfd_target * 53 netbsd_core_file_p (abfd) 54 bfd *abfd; 55 56 { 57 int i, val, offset; 58 asection *asect, *asect2; 59 struct core core; 60 struct coreseg coreseg; 61 62 val = bfd_read ((void *)&core, 1, sizeof core, abfd); 63 if (val != sizeof core) { 64 /* Too small to be a core file */ 65 bfd_set_error(bfd_error_wrong_format); 66 return 0; 67 } 68 69 if (CORE_GETMAGIC(core) != COREMAGIC) { 70 bfd_set_error(bfd_error_wrong_format); 71 return 0; 72 } 73 74 rawptr = (struct netbsd_core_struct *) 75 bfd_zalloc (abfd, sizeof (struct netbsd_core_struct)); 76 if (rawptr == NULL) { 77 bfd_set_error(bfd_error_no_memory); 78 return 0; 79 } 80 81 rawptr->core = core; 82 abfd->tdata.netbsd_core_data = rawptr; 83 84 offset = core.c_hdrsize; 85 for (i = 0; i < core.c_nseg; i++) { 86 87 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 88 goto punt; 89 90 val = bfd_read ((void *)&coreseg, 1, sizeof coreseg, abfd); 91 if (val != sizeof coreseg) { 92 bfd_set_error(bfd_error_file_truncated); 93 goto punt; 94 } 95 if (CORE_GETMAGIC(coreseg) != CORESEGMAGIC) { 96 bfd_set_error(bfd_error_wrong_format); 97 goto punt; 98 } 99 100 offset += core.c_seghdrsize; 101 102 asect = (asection *) bfd_zalloc (abfd, sizeof (asection)); 103 if (asect == NULL) { 104 bfd_set_error(bfd_error_no_memory); 105 goto punt; 106 } 107 108 asect->_raw_size = coreseg.c_size; 109 asect->vma = coreseg.c_addr; 110 asect->filepos = offset; 111 asect->alignment_power = 2; 112 asect->next = abfd->sections; 113 abfd->sections = asect; 114 abfd->section_count++; 115 offset += coreseg.c_size; 116 117 switch (CORE_GETFLAG(coreseg)) { 118 case CORE_CPU: 119 asect->name = ".reg"; 120 asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS; 121 #ifdef CORE_FPU_OFFSET 122 /* Hackish... */ 123 asect->_raw_size = CORE_FPU_OFFSET; 124 asect2 = (asection *)bfd_zalloc (abfd, 125 sizeof (asection)); 126 if (asect2 == NULL) { 127 bfd_set_error(bfd_error_no_memory); 128 goto punt; 129 } 130 asect2->_raw_size = coreseg.c_size - CORE_FPU_OFFSET; 131 asect2->vma = 0; 132 asect2->filepos = asect->filepos + CORE_FPU_OFFSET; 133 asect2->alignment_power = 2; 134 asect2->next = abfd->sections; 135 asect2->name = ".reg2"; 136 asect2->flags = SEC_ALLOC + SEC_HAS_CONTENTS; 137 abfd->sections = asect2; 138 abfd->section_count++; 139 #endif 140 141 break; 142 case CORE_DATA: 143 asect->name = ".data"; 144 asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS; 145 break; 146 case CORE_STACK: 147 asect->name = ".stack"; 148 asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS; 149 break; 150 } 151 } 152 153 /* OK, we believe you. You're a core file (sure, sure). */ 154 return abfd->xvec; 155 156 punt: { 157 asection *anext; 158 for (asect = abfd->sections; asect; asect = anext) { 159 anext = asect->next; 160 free((void *)asect); 161 } 162 } 163 free ((void *)rawptr); 164 abfd->tdata.netbsd_core_data = NULL; 165 abfd->sections = NULL; 166 abfd->section_count = 0; 167 return 0; 168 } 169 170 static char* 171 netbsd_core_file_failing_command (abfd) 172 bfd *abfd; 173 { 174 /*return core_command (abfd);*/ 175 return abfd->tdata.netbsd_core_data->core.c_name; 176 } 177 178 /* ARGSUSED */ 179 static int 180 netbsd_core_file_failing_signal (abfd) 181 bfd *abfd; 182 { 183 /*return core_signal (abfd);*/ 184 return abfd->tdata.netbsd_core_data->core.c_signo; 185 } 186 187 /* ARGSUSED */ 188 static boolean 189 netbsd_core_file_matches_executable_p (core_bfd, exec_bfd) 190 bfd *core_bfd, *exec_bfd; 191 { 192 return true; /* FIXME, We have no way of telling at this point */ 193 } 194 195 /* If somebody calls any byte-swapping routines, shoot them. */ 196 static void 197 swap_abort () 198 { 199 abort (); /* This way doesn't require any declaration for ANSI to fuck up */ 200 } 201 #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) 202 #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) 203 #define NO_SIGNED_GET \ 204 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) 205 206 const bfd_target netbsd_core_vec = 207 { 208 "netbsd-core", 209 bfd_target_unknown_flavour, 210 BFD_ENDIAN_UNKNOWN, /* target byte order */ 211 BFD_ENDIAN_UNKNOWN, /* target headers byte order */ 212 (HAS_RELOC | EXEC_P | /* object flags */ 213 HAS_LINENO | HAS_DEBUG | 214 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 215 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 216 0, /* symbol prefix */ 217 ' ', /* ar_pad_char */ 218 16, /* ar_max_namelen */ 219 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ 220 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ 221 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ 222 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ 223 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ 224 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ 225 226 { /* bfd_check_format */ 227 _bfd_dummy_target, /* unknown format */ 228 _bfd_dummy_target, /* object file */ 229 _bfd_dummy_target, /* archive */ 230 netbsd_core_file_p /* a core file */ 231 }, 232 { /* bfd_set_format */ 233 bfd_false, bfd_false, 234 bfd_false, bfd_false 235 }, 236 { /* bfd_write_contents */ 237 bfd_false, bfd_false, 238 bfd_false, bfd_false 239 }, 240 241 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 242 BFD_JUMP_TABLE_COPY (_bfd_generic), 243 BFD_JUMP_TABLE_CORE (netbsd), 244 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 245 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 246 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 247 BFD_JUMP_TABLE_WRITE (_bfd_generic), 248 BFD_JUMP_TABLE_LINK (_bfd_nolink), 249 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 250 251 NULL, 252 253 (PTR) 0 /* backend_data */ 254 }; 255