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 } 193 194 /* 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 NULL, 251 252 (PTR) 0 /* backend_data */ 253 }; 254