1 /* BFD back-end for OSF/1 core files. 2 Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2006, 3 2007 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 3 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, 20 MA 02110-1301, USA. */ 21 22 23 /* This file can only be compiled on systems which use OSF/1 style 24 core files. */ 25 26 #include "sysdep.h" 27 #include "bfd.h" 28 #include "libbfd.h" 29 30 #include <sys/user.h> 31 #ifdef OSF_CORE 32 #include <sys/core.h> 33 #endif 34 35 /* forward declarations */ 36 37 static asection *make_bfd_asection 38 PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr)); 39 static const bfd_target *osf_core_core_file_p 40 PARAMS ((bfd *)); 41 static char *osf_core_core_file_failing_command 42 PARAMS ((bfd *)); 43 static int osf_core_core_file_failing_signal 44 PARAMS ((bfd *)); 45 #define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p 46 static void swap_abort 47 PARAMS ((void)); 48 49 /* These are stored in the bfd's tdata */ 50 51 struct osf_core_struct 52 { 53 int sig; 54 char cmd[MAXCOMLEN + 1]; 55 }; 56 57 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 58 #define core_signal(bfd) (core_hdr(bfd)->sig) 59 #define core_command(bfd) (core_hdr(bfd)->cmd) 60 61 static asection * 62 make_bfd_asection (abfd, name, flags, size, vma, filepos) 63 bfd *abfd; 64 const char *name; 65 flagword flags; 66 bfd_size_type size; 67 bfd_vma vma; 68 file_ptr filepos; 69 { 70 asection *asect; 71 72 asect = bfd_make_section_anyway_with_flags (abfd, name, flags); 73 if (!asect) 74 return NULL; 75 76 asect->size = size; 77 asect->vma = vma; 78 asect->filepos = filepos; 79 asect->alignment_power = 8; 80 81 return asect; 82 } 83 84 static const bfd_target * 85 osf_core_core_file_p (abfd) 86 bfd *abfd; 87 { 88 int val; 89 int i; 90 char *secname; 91 struct core_filehdr core_header; 92 bfd_size_type amt; 93 94 amt = sizeof core_header; 95 val = bfd_bread ((PTR) &core_header, amt, abfd); 96 if (val != sizeof core_header) 97 return NULL; 98 99 if (! CONST_STRNEQ (core_header.magic, "Core")) 100 return NULL; 101 102 core_hdr (abfd) = (struct osf_core_struct *) 103 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct)); 104 if (!core_hdr (abfd)) 105 return NULL; 106 107 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 108 core_signal (abfd) = core_header.signo; 109 110 for (i = 0; i < core_header.nscns; i++) 111 { 112 struct core_scnhdr core_scnhdr; 113 flagword flags; 114 115 amt = sizeof core_scnhdr; 116 val = bfd_bread ((PTR) &core_scnhdr, amt, abfd); 117 if (val != sizeof core_scnhdr) 118 break; 119 120 /* Skip empty sections. */ 121 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 122 continue; 123 124 switch (core_scnhdr.scntype) 125 { 126 case SCNRGN: 127 secname = ".data"; 128 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 129 break; 130 case SCNSTACK: 131 secname = ".stack"; 132 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 133 break; 134 case SCNREGS: 135 secname = ".reg"; 136 flags = SEC_HAS_CONTENTS; 137 break; 138 default: 139 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 140 core_scnhdr.scntype); 141 continue; 142 } 143 144 if (!make_bfd_asection (abfd, secname, flags, 145 (bfd_size_type) core_scnhdr.size, 146 (bfd_vma) core_scnhdr.vaddr, 147 (file_ptr) core_scnhdr.scnptr)) 148 goto fail; 149 } 150 151 /* OK, we believe you. You're a core file (sure, sure). */ 152 153 return abfd->xvec; 154 155 fail: 156 bfd_release (abfd, core_hdr (abfd)); 157 core_hdr (abfd) = NULL; 158 bfd_section_list_clear (abfd); 159 return NULL; 160 } 161 162 static char * 163 osf_core_core_file_failing_command (abfd) 164 bfd *abfd; 165 { 166 return core_command (abfd); 167 } 168 169 static int 170 osf_core_core_file_failing_signal (abfd) 171 bfd *abfd; 172 { 173 return core_signal (abfd); 174 } 175 176 /* If somebody calls any byte-swapping routines, shoot them. */ 177 static void 178 swap_abort() 179 { 180 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 181 } 182 183 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 184 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 185 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 186 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 187 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 188 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 189 190 const bfd_target osf_core_vec = 191 { 192 "osf-core", 193 bfd_target_unknown_flavour, 194 BFD_ENDIAN_LITTLE, /* target byte order */ 195 BFD_ENDIAN_LITTLE, /* target headers byte order */ 196 (HAS_RELOC | EXEC_P | /* object flags */ 197 HAS_LINENO | HAS_DEBUG | 198 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 199 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 200 0, /* symbol prefix */ 201 ' ', /* ar_pad_char */ 202 16, /* ar_max_namelen */ 203 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ 204 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ 205 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ 206 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ 207 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ 208 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ 209 210 { /* bfd_check_format */ 211 _bfd_dummy_target, /* unknown format */ 212 _bfd_dummy_target, /* object file */ 213 _bfd_dummy_target, /* archive */ 214 osf_core_core_file_p /* a core file */ 215 }, 216 { /* bfd_set_format */ 217 bfd_false, bfd_false, 218 bfd_false, bfd_false 219 }, 220 { /* bfd_write_contents */ 221 bfd_false, bfd_false, 222 bfd_false, bfd_false 223 }, 224 225 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 226 BFD_JUMP_TABLE_COPY (_bfd_generic), 227 BFD_JUMP_TABLE_CORE (osf_core), 228 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 229 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 230 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 231 BFD_JUMP_TABLE_WRITE (_bfd_generic), 232 BFD_JUMP_TABLE_LINK (_bfd_nolink), 233 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 234 235 NULL, 236 237 (PTR) 0 /* backend_data */ 238 }; 239