1 /* BFD back-end for OSF/1 core files. 2 Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004 3 Free Software Foundation, Inc. 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 20 21 /* This file can only be compiled on systems which use OSF/1 style 22 core files. */ 23 24 #include "bfd.h" 25 #include "sysdep.h" 26 #include "libbfd.h" 27 28 #include <sys/user.h> 29 #ifdef OSF_CORE 30 #include <sys/core.h> 31 #endif 32 33 /* forward declarations */ 34 35 static asection *make_bfd_asection 36 PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr)); 37 static const bfd_target *osf_core_core_file_p 38 PARAMS ((bfd *)); 39 static char *osf_core_core_file_failing_command 40 PARAMS ((bfd *)); 41 static int osf_core_core_file_failing_signal 42 PARAMS ((bfd *)); 43 #define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p 44 static void swap_abort 45 PARAMS ((void)); 46 47 /* These are stored in the bfd's tdata */ 48 49 struct osf_core_struct 50 { 51 int sig; 52 char cmd[MAXCOMLEN + 1]; 53 }; 54 55 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 56 #define core_signal(bfd) (core_hdr(bfd)->sig) 57 #define core_command(bfd) (core_hdr(bfd)->cmd) 58 59 static asection * 60 make_bfd_asection (abfd, name, flags, size, vma, filepos) 61 bfd *abfd; 62 const char *name; 63 flagword flags; 64 bfd_size_type size; 65 bfd_vma vma; 66 file_ptr filepos; 67 { 68 asection *asect; 69 70 asect = bfd_make_section_anyway (abfd, name); 71 if (!asect) 72 return NULL; 73 74 asect->flags = flags; 75 asect->size = size; 76 asect->vma = vma; 77 asect->filepos = filepos; 78 asect->alignment_power = 8; 79 80 return asect; 81 } 82 83 static const bfd_target * 84 osf_core_core_file_p (abfd) 85 bfd *abfd; 86 { 87 int val; 88 int i; 89 char *secname; 90 struct core_filehdr core_header; 91 bfd_size_type amt; 92 93 amt = sizeof core_header; 94 val = bfd_bread ((PTR) &core_header, amt, abfd); 95 if (val != sizeof core_header) 96 return NULL; 97 98 if (strncmp (core_header.magic, "Core", 4) != 0) 99 return NULL; 100 101 core_hdr (abfd) = (struct osf_core_struct *) 102 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct)); 103 if (!core_hdr (abfd)) 104 return NULL; 105 106 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 107 core_signal (abfd) = core_header.signo; 108 109 for (i = 0; i < core_header.nscns; i++) 110 { 111 struct core_scnhdr core_scnhdr; 112 flagword flags; 113 114 amt = sizeof core_scnhdr; 115 val = bfd_bread ((PTR) &core_scnhdr, amt, abfd); 116 if (val != sizeof core_scnhdr) 117 break; 118 119 /* Skip empty sections. */ 120 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 121 continue; 122 123 switch (core_scnhdr.scntype) 124 { 125 case SCNRGN: 126 secname = ".data"; 127 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 128 break; 129 case SCNSTACK: 130 secname = ".stack"; 131 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 132 break; 133 case SCNREGS: 134 secname = ".reg"; 135 flags = SEC_HAS_CONTENTS; 136 break; 137 default: 138 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 139 core_scnhdr.scntype); 140 continue; 141 } 142 143 if (!make_bfd_asection (abfd, secname, flags, 144 (bfd_size_type) core_scnhdr.size, 145 (bfd_vma) core_scnhdr.vaddr, 146 (file_ptr) core_scnhdr.scnptr)) 147 goto fail; 148 } 149 150 /* OK, we believe you. You're a core file (sure, sure). */ 151 152 return abfd->xvec; 153 154 fail: 155 bfd_release (abfd, core_hdr (abfd)); 156 core_hdr (abfd) = NULL; 157 bfd_section_list_clear (abfd); 158 return NULL; 159 } 160 161 static char * 162 osf_core_core_file_failing_command (abfd) 163 bfd *abfd; 164 { 165 return core_command (abfd); 166 } 167 168 static int 169 osf_core_core_file_failing_signal (abfd) 170 bfd *abfd; 171 { 172 return core_signal (abfd); 173 } 174 175 /* If somebody calls any byte-swapping routines, shoot them. */ 176 static void 177 swap_abort() 178 { 179 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 180 } 181 182 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 183 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 184 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 185 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 186 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 187 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 188 189 const bfd_target osf_core_vec = 190 { 191 "osf-core", 192 bfd_target_unknown_flavour, 193 BFD_ENDIAN_LITTLE, /* target byte order */ 194 BFD_ENDIAN_LITTLE, /* target headers byte order */ 195 (HAS_RELOC | EXEC_P | /* object flags */ 196 HAS_LINENO | HAS_DEBUG | 197 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 198 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 199 0, /* symbol prefix */ 200 ' ', /* ar_pad_char */ 201 16, /* ar_max_namelen */ 202 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ 203 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ 204 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ 205 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ 206 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ 207 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ 208 209 { /* bfd_check_format */ 210 _bfd_dummy_target, /* unknown format */ 211 _bfd_dummy_target, /* object file */ 212 _bfd_dummy_target, /* archive */ 213 osf_core_core_file_p /* a core file */ 214 }, 215 { /* bfd_set_format */ 216 bfd_false, bfd_false, 217 bfd_false, bfd_false 218 }, 219 { /* bfd_write_contents */ 220 bfd_false, bfd_false, 221 bfd_false, bfd_false 222 }, 223 224 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 225 BFD_JUMP_TABLE_COPY (_bfd_generic), 226 BFD_JUMP_TABLE_CORE (osf_core), 227 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 228 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 229 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 230 BFD_JUMP_TABLE_WRITE (_bfd_generic), 231 BFD_JUMP_TABLE_LINK (_bfd_nolink), 232 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 233 234 NULL, 235 236 (PTR) 0 /* backend_data */ 237 }; 238