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 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 "sysdep.h" 25 #include "bfd.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_with_flags (abfd, name, flags); 71 if (!asect) 72 return NULL; 73 74 asect->size = size; 75 asect->vma = vma; 76 asect->filepos = filepos; 77 asect->alignment_power = 8; 78 79 return asect; 80 } 81 82 static const bfd_target * 83 osf_core_core_file_p (abfd) 84 bfd *abfd; 85 { 86 int val; 87 int i; 88 char *secname; 89 struct core_filehdr core_header; 90 bfd_size_type amt; 91 92 amt = sizeof core_header; 93 val = bfd_bread ((PTR) &core_header, amt, abfd); 94 if (val != sizeof core_header) 95 return NULL; 96 97 if (! CONST_STRNEQ (core_header.magic, "Core")) 98 return NULL; 99 100 core_hdr (abfd) = (struct osf_core_struct *) 101 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct)); 102 if (!core_hdr (abfd)) 103 return NULL; 104 105 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 106 core_signal (abfd) = core_header.signo; 107 108 for (i = 0; i < core_header.nscns; i++) 109 { 110 struct core_scnhdr core_scnhdr; 111 flagword flags; 112 113 amt = sizeof core_scnhdr; 114 val = bfd_bread ((PTR) &core_scnhdr, amt, abfd); 115 if (val != sizeof core_scnhdr) 116 break; 117 118 /* Skip empty sections. */ 119 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 120 continue; 121 122 switch (core_scnhdr.scntype) 123 { 124 case SCNRGN: 125 secname = ".data"; 126 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 127 break; 128 case SCNSTACK: 129 secname = ".stack"; 130 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 131 break; 132 case SCNREGS: 133 secname = ".reg"; 134 flags = SEC_HAS_CONTENTS; 135 break; 136 default: 137 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 138 core_scnhdr.scntype); 139 continue; 140 } 141 142 if (!make_bfd_asection (abfd, secname, flags, 143 (bfd_size_type) core_scnhdr.size, 144 (bfd_vma) core_scnhdr.vaddr, 145 (file_ptr) core_scnhdr.scnptr)) 146 goto fail; 147 } 148 149 /* OK, we believe you. You're a core file (sure, sure). */ 150 151 return abfd->xvec; 152 153 fail: 154 bfd_release (abfd, core_hdr (abfd)); 155 core_hdr (abfd) = NULL; 156 bfd_section_list_clear (abfd); 157 return NULL; 158 } 159 160 static char * 161 osf_core_core_file_failing_command (abfd) 162 bfd *abfd; 163 { 164 return core_command (abfd); 165 } 166 167 static int 168 osf_core_core_file_failing_signal (abfd) 169 bfd *abfd; 170 { 171 return core_signal (abfd); 172 } 173 174 /* If somebody calls any byte-swapping routines, shoot them. */ 175 static void 176 swap_abort() 177 { 178 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 179 } 180 181 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 182 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 183 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 184 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 185 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 186 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 187 188 const bfd_target osf_core_vec = 189 { 190 "osf-core", 191 bfd_target_unknown_flavour, 192 BFD_ENDIAN_LITTLE, /* target byte order */ 193 BFD_ENDIAN_LITTLE, /* target headers byte order */ 194 (HAS_RELOC | EXEC_P | /* object flags */ 195 HAS_LINENO | HAS_DEBUG | 196 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 197 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 198 0, /* symbol prefix */ 199 ' ', /* ar_pad_char */ 200 16, /* ar_max_namelen */ 201 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ 202 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ 203 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ 204 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ 205 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ 206 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ 207 208 { /* bfd_check_format */ 209 _bfd_dummy_target, /* unknown format */ 210 _bfd_dummy_target, /* object file */ 211 _bfd_dummy_target, /* archive */ 212 osf_core_core_file_p /* a core file */ 213 }, 214 { /* bfd_set_format */ 215 bfd_false, bfd_false, 216 bfd_false, bfd_false 217 }, 218 { /* bfd_write_contents */ 219 bfd_false, bfd_false, 220 bfd_false, bfd_false 221 }, 222 223 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 224 BFD_JUMP_TABLE_COPY (_bfd_generic), 225 BFD_JUMP_TABLE_CORE (osf_core), 226 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 227 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 228 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 229 BFD_JUMP_TABLE_WRITE (_bfd_generic), 230 BFD_JUMP_TABLE_LINK (_bfd_nolink), 231 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 232 233 NULL, 234 235 (PTR) 0 /* backend_data */ 236 }; 237