1 /* BFD back-end for OSF/1 core files. 2 Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2005, 2006, 3 2007, 2010, 2011, 2012 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 #define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p 38 #define osf_core_core_file_pid _bfd_nocore_core_file_pid 39 40 /* These are stored in the bfd's tdata */ 41 42 struct osf_core_struct 43 { 44 int sig; 45 char cmd[MAXCOMLEN + 1]; 46 }; 47 48 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 49 #define core_signal(bfd) (core_hdr(bfd)->sig) 50 #define core_command(bfd) (core_hdr(bfd)->cmd) 51 52 static asection * 53 make_bfd_asection (bfd *abfd, 54 const char *name, 55 flagword flags, 56 bfd_size_type size, 57 bfd_vma vma, 58 file_ptr filepos) 59 { 60 asection *asect; 61 62 asect = bfd_make_section_anyway_with_flags (abfd, name, flags); 63 if (!asect) 64 return NULL; 65 66 asect->size = size; 67 asect->vma = vma; 68 asect->filepos = filepos; 69 asect->alignment_power = 8; 70 71 return asect; 72 } 73 74 static const bfd_target * 75 osf_core_core_file_p (bfd *abfd) 76 { 77 int val; 78 int i; 79 char *secname; 80 struct core_filehdr core_header; 81 bfd_size_type amt; 82 83 amt = sizeof core_header; 84 val = bfd_bread (& core_header, amt, abfd); 85 if (val != sizeof core_header) 86 return NULL; 87 88 if (! CONST_STRNEQ (core_header.magic, "Core")) 89 return NULL; 90 91 core_hdr (abfd) = (struct osf_core_struct *) 92 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct)); 93 if (!core_hdr (abfd)) 94 return NULL; 95 96 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 97 core_signal (abfd) = core_header.signo; 98 99 for (i = 0; i < core_header.nscns; i++) 100 { 101 struct core_scnhdr core_scnhdr; 102 flagword flags; 103 104 amt = sizeof core_scnhdr; 105 val = bfd_bread (& core_scnhdr, amt, abfd); 106 if (val != sizeof core_scnhdr) 107 break; 108 109 /* Skip empty sections. */ 110 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 111 continue; 112 113 switch (core_scnhdr.scntype) 114 { 115 case SCNRGN: 116 secname = ".data"; 117 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 118 break; 119 case SCNSTACK: 120 secname = ".stack"; 121 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 122 break; 123 case SCNREGS: 124 secname = ".reg"; 125 flags = SEC_HAS_CONTENTS; 126 break; 127 default: 128 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 129 core_scnhdr.scntype); 130 continue; 131 } 132 133 if (!make_bfd_asection (abfd, secname, flags, 134 (bfd_size_type) core_scnhdr.size, 135 (bfd_vma) core_scnhdr.vaddr, 136 (file_ptr) core_scnhdr.scnptr)) 137 goto fail; 138 } 139 140 /* OK, we believe you. You're a core file (sure, sure). */ 141 142 return abfd->xvec; 143 144 fail: 145 bfd_release (abfd, core_hdr (abfd)); 146 core_hdr (abfd) = NULL; 147 bfd_section_list_clear (abfd); 148 return NULL; 149 } 150 151 static char * 152 osf_core_core_file_failing_command (bfd *abfd) 153 { 154 return core_command (abfd); 155 } 156 157 static int 158 osf_core_core_file_failing_signal (bfd *abfd) 159 { 160 return core_signal (abfd); 161 } 162 163 /* If somebody calls any byte-swapping routines, shoot them. */ 164 static void 165 swap_abort (void) 166 { 167 abort (); /* This way doesn't require any declaration for ANSI to fuck up */ 168 } 169 170 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 171 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 172 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 173 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 174 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 175 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 176 177 const bfd_target osf_core_vec = 178 { 179 "osf-core", 180 bfd_target_unknown_flavour, 181 BFD_ENDIAN_LITTLE, /* target byte order */ 182 BFD_ENDIAN_LITTLE, /* target headers byte order */ 183 (HAS_RELOC | EXEC_P | /* object flags */ 184 HAS_LINENO | HAS_DEBUG | 185 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 186 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 187 0, /* symbol prefix */ 188 ' ', /* ar_pad_char */ 189 16, /* ar_max_namelen */ 190 0, /* match priority. */ 191 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ 192 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ 193 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ 194 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ 195 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ 196 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ 197 198 { /* bfd_check_format */ 199 _bfd_dummy_target, /* unknown format */ 200 _bfd_dummy_target, /* object file */ 201 _bfd_dummy_target, /* archive */ 202 osf_core_core_file_p /* a core file */ 203 }, 204 { /* bfd_set_format */ 205 bfd_false, bfd_false, 206 bfd_false, bfd_false 207 }, 208 { /* bfd_write_contents */ 209 bfd_false, bfd_false, 210 bfd_false, bfd_false 211 }, 212 213 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 214 BFD_JUMP_TABLE_COPY (_bfd_generic), 215 BFD_JUMP_TABLE_CORE (osf_core), 216 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 217 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 218 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 219 BFD_JUMP_TABLE_WRITE (_bfd_generic), 220 BFD_JUMP_TABLE_LINK (_bfd_nolink), 221 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 222 223 NULL, 224 225 NULL /* backend_data */ 226 }; 227