1 /* BFD back-end for OSF/1 core files. 2 Copyright 1993, 1994 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20 /* This file can only be compiled on systems which use OSF/1 style 21 core files. */ 22 23 #include "bfd.h" 24 #include "sysdep.h" 25 #include "libbfd.h" 26 27 #include <stdio.h> 28 #include <string.h> 29 #include <sys/user.h> 30 #include <sys/core.h> 31 32 /* forward declarations */ 33 34 static asection * 35 make_bfd_asection PARAMS ((bfd *, CONST char *, flagword, bfd_size_type, 36 bfd_vma, file_ptr)); 37 static asymbol * 38 osf_core_make_empty_symbol PARAMS ((bfd *)); 39 static const bfd_target * 40 osf_core_core_file_p PARAMS ((bfd *)); 41 static char * 42 osf_core_core_file_failing_command PARAMS ((bfd *)); 43 static int 44 osf_core_core_file_failing_signal PARAMS ((bfd *)); 45 static boolean 46 osf_core_core_file_matches_executable_p PARAMS ((bfd *, bfd *)); 47 static void 48 swap_abort PARAMS ((void)); 49 50 /* These are stored in the bfd's tdata */ 51 52 struct osf_core_struct 53 { 54 int sig; 55 char cmd[MAXCOMLEN + 1]; 56 }; 57 58 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 59 #define core_signal(bfd) (core_hdr(bfd)->sig) 60 #define core_command(bfd) (core_hdr(bfd)->cmd) 61 62 static asection * 63 make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos) 64 bfd *abfd; 65 CONST char *name; 66 flagword flags; 67 bfd_size_type _raw_size; 68 bfd_vma vma; 69 file_ptr filepos; 70 { 71 asection *asect; 72 73 asect = bfd_make_section_anyway (abfd, name); 74 if (!asect) 75 return NULL; 76 77 asect->flags = flags; 78 asect->_raw_size = _raw_size; 79 asect->vma = vma; 80 asect->filepos = filepos; 81 asect->alignment_power = 8; 82 83 return asect; 84 } 85 86 static asymbol * 87 osf_core_make_empty_symbol (abfd) 88 bfd *abfd; 89 { 90 asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); 91 if (new) 92 new->the_bfd = abfd; 93 return new; 94 } 95 96 static const bfd_target * 97 osf_core_core_file_p (abfd) 98 bfd *abfd; 99 { 100 int val; 101 int i; 102 char *secname; 103 struct core_filehdr core_header; 104 105 val = bfd_read ((PTR)&core_header, 1, sizeof core_header, abfd); 106 if (val != sizeof core_header) 107 return NULL; 108 109 if (strncmp (core_header.magic, "Core", 4) != 0) 110 return NULL; 111 112 core_hdr (abfd) = (struct osf_core_struct *) 113 bfd_zalloc (abfd, sizeof (struct osf_core_struct)); 114 if (!core_hdr (abfd)) 115 return NULL; 116 117 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 118 core_signal (abfd) = core_header.signo; 119 120 for (i = 0; i < core_header.nscns; i++) 121 { 122 struct core_scnhdr core_scnhdr; 123 flagword flags; 124 125 val = bfd_read ((PTR)&core_scnhdr, 1, sizeof core_scnhdr, abfd); 126 if (val != sizeof core_scnhdr) 127 break; 128 129 /* Skip empty sections. */ 130 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 131 continue; 132 133 switch (core_scnhdr.scntype) 134 { 135 case SCNRGN: 136 secname = ".data"; 137 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 138 break; 139 case SCNSTACK: 140 secname = ".stack"; 141 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 142 break; 143 case SCNREGS: 144 secname = ".reg"; 145 flags = SEC_HAS_CONTENTS; 146 break; 147 default: 148 (*_bfd_error_handler) ("Unhandled OSF/1 core file section type %d\n", 149 core_scnhdr.scntype); 150 continue; 151 } 152 153 if (!make_bfd_asection (abfd, secname, flags, 154 (bfd_size_type) core_scnhdr.size, 155 (bfd_vma) core_scnhdr.vaddr, 156 (file_ptr) core_scnhdr.scnptr)) 157 return NULL; 158 } 159 160 /* OK, we believe you. You're a core file (sure, sure). */ 161 162 return abfd->xvec; 163 } 164 165 static char * 166 osf_core_core_file_failing_command (abfd) 167 bfd *abfd; 168 { 169 return core_command (abfd); 170 } 171 172 /* ARGSUSED */ 173 static int 174 osf_core_core_file_failing_signal (abfd) 175 bfd *abfd; 176 { 177 return core_signal (abfd); 178 } 179 180 /* ARGSUSED */ 181 static boolean 182 osf_core_core_file_matches_executable_p (core_bfd, exec_bfd) 183 bfd *core_bfd, *exec_bfd; 184 { 185 return true; /* FIXME, We have no way of telling at this point */ 186 } 187 188 #define osf_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound 189 #define osf_core_get_symtab _bfd_nosymbols_get_symtab 190 #define osf_core_print_symbol _bfd_nosymbols_print_symbol 191 #define osf_core_get_symbol_info _bfd_nosymbols_get_symbol_info 192 #define osf_core_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label 193 #define osf_core_get_lineno _bfd_nosymbols_get_lineno 194 #define osf_core_find_nearest_line _bfd_nosymbols_find_nearest_line 195 #define osf_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 196 #define osf_core_read_minisymbols _bfd_nosymbols_read_minisymbols 197 #define osf_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol 198 199 /* If somebody calls any byte-swapping routines, shoot them. */ 200 static void 201 swap_abort() 202 { 203 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 204 } 205 #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) 206 #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) 207 #define NO_SIGNED_GET \ 208 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) 209 210 const bfd_target osf_core_vec = 211 { 212 "osf-core", 213 bfd_target_unknown_flavour, 214 BFD_ENDIAN_BIG, /* target byte order */ 215 BFD_ENDIAN_BIG, /* target headers byte order */ 216 (HAS_RELOC | EXEC_P | /* object flags */ 217 HAS_LINENO | HAS_DEBUG | 218 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 219 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 220 0, /* symbol prefix */ 221 ' ', /* ar_pad_char */ 222 16, /* ar_max_namelen */ 223 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ 224 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ 225 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ 226 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ 227 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ 228 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ 229 230 { /* bfd_check_format */ 231 _bfd_dummy_target, /* unknown format */ 232 _bfd_dummy_target, /* object file */ 233 _bfd_dummy_target, /* archive */ 234 osf_core_core_file_p /* a core file */ 235 }, 236 { /* bfd_set_format */ 237 bfd_false, bfd_false, 238 bfd_false, bfd_false 239 }, 240 { /* bfd_write_contents */ 241 bfd_false, bfd_false, 242 bfd_false, bfd_false 243 }, 244 245 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 246 BFD_JUMP_TABLE_COPY (_bfd_generic), 247 BFD_JUMP_TABLE_CORE (osf_core), 248 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 249 BFD_JUMP_TABLE_SYMBOLS (osf_core), 250 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 251 BFD_JUMP_TABLE_WRITE (_bfd_generic), 252 BFD_JUMP_TABLE_LINK (_bfd_nolink), 253 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 254 255 (PTR) 0 /* backend_data */ 256 }; 257