1 /* BFD back-end for OSF/1 core files. 2 Copyright 1993, 94, 95, 97, 1998 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 <sys/user.h> 28 #include <sys/core.h> 29 30 /* forward declarations */ 31 32 static asection * 33 make_bfd_asection PARAMS ((bfd *, CONST char *, flagword, bfd_size_type, 34 bfd_vma, file_ptr)); 35 static asymbol * 36 osf_core_make_empty_symbol PARAMS ((bfd *)); 37 static const bfd_target * 38 osf_core_core_file_p PARAMS ((bfd *)); 39 static char * 40 osf_core_core_file_failing_command PARAMS ((bfd *)); 41 static int 42 osf_core_core_file_failing_signal PARAMS ((bfd *)); 43 static boolean 44 osf_core_core_file_matches_executable_p PARAMS ((bfd *, bfd *)); 45 static void 46 swap_abort PARAMS ((void)); 47 48 /* These are stored in the bfd's tdata */ 49 50 struct osf_core_struct 51 { 52 int sig; 53 char cmd[MAXCOMLEN + 1]; 54 }; 55 56 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 57 #define core_signal(bfd) (core_hdr(bfd)->sig) 58 #define core_command(bfd) (core_hdr(bfd)->cmd) 59 60 static asection * 61 make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos) 62 bfd *abfd; 63 CONST char *name; 64 flagword flags; 65 bfd_size_type _raw_size; 66 bfd_vma vma; 67 file_ptr filepos; 68 { 69 asection *asect; 70 71 asect = bfd_make_section_anyway (abfd, name); 72 if (!asect) 73 return NULL; 74 75 asect->flags = flags; 76 asect->_raw_size = _raw_size; 77 asect->vma = vma; 78 asect->filepos = filepos; 79 asect->alignment_power = 8; 80 81 return asect; 82 } 83 84 static asymbol * 85 osf_core_make_empty_symbol (abfd) 86 bfd *abfd; 87 { 88 asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); 89 if (new) 90 new->the_bfd = abfd; 91 return new; 92 } 93 94 static const bfd_target * 95 osf_core_core_file_p (abfd) 96 bfd *abfd; 97 { 98 int val; 99 int i; 100 char *secname; 101 struct core_filehdr core_header; 102 103 val = bfd_read ((PTR)&core_header, 1, sizeof core_header, abfd); 104 if (val != sizeof core_header) 105 return NULL; 106 107 if (strncmp (core_header.magic, "Core", 4) != 0) 108 return NULL; 109 110 core_hdr (abfd) = (struct osf_core_struct *) 111 bfd_zalloc (abfd, sizeof (struct osf_core_struct)); 112 if (!core_hdr (abfd)) 113 return NULL; 114 115 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 116 core_signal (abfd) = core_header.signo; 117 118 for (i = 0; i < core_header.nscns; i++) 119 { 120 struct core_scnhdr core_scnhdr; 121 flagword flags; 122 123 val = bfd_read ((PTR)&core_scnhdr, 1, sizeof core_scnhdr, abfd); 124 if (val != sizeof core_scnhdr) 125 break; 126 127 /* Skip empty sections. */ 128 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 129 continue; 130 131 switch (core_scnhdr.scntype) 132 { 133 case SCNRGN: 134 secname = ".data"; 135 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 136 break; 137 case SCNSTACK: 138 secname = ".stack"; 139 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 140 break; 141 case SCNREGS: 142 secname = ".reg"; 143 flags = SEC_HAS_CONTENTS; 144 break; 145 default: 146 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 147 core_scnhdr.scntype); 148 continue; 149 } 150 151 if (!make_bfd_asection (abfd, secname, flags, 152 (bfd_size_type) core_scnhdr.size, 153 (bfd_vma) core_scnhdr.vaddr, 154 (file_ptr) core_scnhdr.scnptr)) 155 return NULL; 156 } 157 158 /* OK, we believe you. You're a core file (sure, sure). */ 159 160 return abfd->xvec; 161 } 162 163 static char * 164 osf_core_core_file_failing_command (abfd) 165 bfd *abfd; 166 { 167 return core_command (abfd); 168 } 169 170 /* ARGSUSED */ 171 static int 172 osf_core_core_file_failing_signal (abfd) 173 bfd *abfd; 174 { 175 return core_signal (abfd); 176 } 177 178 /* ARGSUSED */ 179 static boolean 180 osf_core_core_file_matches_executable_p (core_bfd, exec_bfd) 181 bfd *core_bfd, *exec_bfd; 182 { 183 return true; /* FIXME, We have no way of telling at this point */ 184 } 185 186 #define osf_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound 187 #define osf_core_get_symtab _bfd_nosymbols_get_symtab 188 #define osf_core_print_symbol _bfd_nosymbols_print_symbol 189 #define osf_core_get_symbol_info _bfd_nosymbols_get_symbol_info 190 #define osf_core_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name 191 #define osf_core_get_lineno _bfd_nosymbols_get_lineno 192 #define osf_core_find_nearest_line _bfd_nosymbols_find_nearest_line 193 #define osf_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 194 #define osf_core_read_minisymbols _bfd_nosymbols_read_minisymbols 195 #define osf_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol 196 197 /* If somebody calls any byte-swapping routines, shoot them. */ 198 static void 199 swap_abort() 200 { 201 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 202 } 203 #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) 204 #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) 205 #define NO_SIGNED_GET \ 206 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) 207 208 const bfd_target osf_core_vec = 209 { 210 "osf-core", 211 bfd_target_unknown_flavour, 212 BFD_ENDIAN_BIG, /* target byte order */ 213 BFD_ENDIAN_BIG, /* target headers byte order */ 214 (HAS_RELOC | EXEC_P | /* object flags */ 215 HAS_LINENO | HAS_DEBUG | 216 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 217 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 218 0, /* symbol prefix */ 219 ' ', /* ar_pad_char */ 220 16, /* ar_max_namelen */ 221 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ 222 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ 223 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ 224 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ 225 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ 226 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ 227 228 { /* bfd_check_format */ 229 _bfd_dummy_target, /* unknown format */ 230 _bfd_dummy_target, /* object file */ 231 _bfd_dummy_target, /* archive */ 232 osf_core_core_file_p /* a core file */ 233 }, 234 { /* bfd_set_format */ 235 bfd_false, bfd_false, 236 bfd_false, bfd_false 237 }, 238 { /* bfd_write_contents */ 239 bfd_false, bfd_false, 240 bfd_false, bfd_false 241 }, 242 243 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 244 BFD_JUMP_TABLE_COPY (_bfd_generic), 245 BFD_JUMP_TABLE_CORE (osf_core), 246 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 247 BFD_JUMP_TABLE_SYMBOLS (osf_core), 248 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 249 BFD_JUMP_TABLE_WRITE (_bfd_generic), 250 BFD_JUMP_TABLE_LINK (_bfd_nolink), 251 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 252 253 NULL, 254 255 (PTR) 0 /* backend_data */ 256 }; 257