1 /* BFD back-end for OSF/1 core files. 2 Copyright (C) 1993-2016 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 3 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., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 22 /* This file can only be compiled on systems which use OSF/1 style 23 core files. */ 24 25 #include "sysdep.h" 26 #include "bfd.h" 27 #include "libbfd.h" 28 29 #include <sys/user.h> 30 #ifdef OSF_CORE 31 #include <sys/core.h> 32 #endif 33 34 /* forward declarations */ 35 36 #define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p 37 #define osf_core_core_file_pid _bfd_nocore_core_file_pid 38 39 /* These are stored in the bfd's tdata */ 40 41 struct osf_core_struct 42 { 43 int sig; 44 char cmd[MAXCOMLEN + 1]; 45 }; 46 47 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 48 #define core_signal(bfd) (core_hdr(bfd)->sig) 49 #define core_command(bfd) (core_hdr(bfd)->cmd) 50 51 static asection * 52 make_bfd_asection (bfd *abfd, 53 const char *name, 54 flagword flags, 55 bfd_size_type size, 56 bfd_vma vma, 57 file_ptr filepos) 58 { 59 asection *asect; 60 61 asect = bfd_make_section_anyway_with_flags (abfd, name, flags); 62 if (!asect) 63 return NULL; 64 65 asect->size = size; 66 asect->vma = vma; 67 asect->filepos = filepos; 68 asect->alignment_power = 8; 69 70 return asect; 71 } 72 73 static const bfd_target * 74 osf_core_core_file_p (bfd *abfd) 75 { 76 int val; 77 int i; 78 char *secname; 79 struct core_filehdr core_header; 80 bfd_size_type amt; 81 82 amt = sizeof core_header; 83 val = bfd_bread (& core_header, amt, abfd); 84 if (val != sizeof core_header) 85 return NULL; 86 87 if (! CONST_STRNEQ (core_header.magic, "Core")) 88 return NULL; 89 90 core_hdr (abfd) = (struct osf_core_struct *) 91 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct)); 92 if (!core_hdr (abfd)) 93 return NULL; 94 95 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 96 core_signal (abfd) = core_header.signo; 97 98 for (i = 0; i < core_header.nscns; i++) 99 { 100 struct core_scnhdr core_scnhdr; 101 flagword flags; 102 103 amt = sizeof core_scnhdr; 104 val = bfd_bread (& core_scnhdr, amt, abfd); 105 if (val != sizeof core_scnhdr) 106 break; 107 108 /* Skip empty sections. */ 109 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 110 continue; 111 112 switch (core_scnhdr.scntype) 113 { 114 case SCNRGN: 115 secname = ".data"; 116 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 117 break; 118 case SCNSTACK: 119 secname = ".stack"; 120 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 121 break; 122 case SCNREGS: 123 secname = ".reg"; 124 flags = SEC_HAS_CONTENTS; 125 break; 126 default: 127 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 128 core_scnhdr.scntype); 129 continue; 130 } 131 132 if (!make_bfd_asection (abfd, secname, flags, 133 (bfd_size_type) core_scnhdr.size, 134 (bfd_vma) core_scnhdr.vaddr, 135 (file_ptr) core_scnhdr.scnptr)) 136 goto fail; 137 } 138 139 /* OK, we believe you. You're a core file (sure, sure). */ 140 141 return abfd->xvec; 142 143 fail: 144 bfd_release (abfd, core_hdr (abfd)); 145 core_hdr (abfd) = NULL; 146 bfd_section_list_clear (abfd); 147 return NULL; 148 } 149 150 static char * 151 osf_core_core_file_failing_command (bfd *abfd) 152 { 153 return core_command (abfd); 154 } 155 156 static int 157 osf_core_core_file_failing_signal (bfd *abfd) 158 { 159 return core_signal (abfd); 160 } 161 162 /* 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 core_osf_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
