| 1 | /* BFD back-end for OSF/1 core files. |
| 2 | Copyright (C) 1993-2020 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"), |
| 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 | \f |
| 162 | /* If somebody calls any byte-swapping routines, shoot them. */ |
| 163 | static void |
| 164 | swap_abort (void) |
| 165 | { |
| 166 | abort (); /* This way doesn't require any declaration for ANSI to fuck up */ |
| 167 | } |
| 168 | |
| 169 | #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) |
| 170 | #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) |
| 171 | #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) |
| 172 | #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) |
| 173 | #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) |
| 174 | #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) |
| 175 | |
| 176 | const bfd_target core_osf_vec = |
| 177 | { |
| 178 | "osf-core", |
| 179 | bfd_target_unknown_flavour, |
| 180 | BFD_ENDIAN_LITTLE, /* target byte order */ |
| 181 | BFD_ENDIAN_LITTLE, /* target headers byte order */ |
| 182 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 183 | HAS_LINENO | HAS_DEBUG | |
| 184 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 185 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 186 | 0, /* symbol prefix */ |
| 187 | ' ', /* ar_pad_char */ |
| 188 | 16, /* ar_max_namelen */ |
| 189 | 0, /* match priority. */ |
| 190 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ |
| 191 | NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ |
| 192 | NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ |
| 193 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ |
| 194 | NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ |
| 195 | NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ |
| 196 | |
| 197 | { /* bfd_check_format */ |
| 198 | _bfd_dummy_target, /* unknown format */ |
| 199 | _bfd_dummy_target, /* object file */ |
| 200 | _bfd_dummy_target, /* archive */ |
| 201 | osf_core_core_file_p /* a core file */ |
| 202 | }, |
| 203 | { /* bfd_set_format */ |
| 204 | _bfd_bool_bfd_false_error, |
| 205 | _bfd_bool_bfd_false_error, |
| 206 | _bfd_bool_bfd_false_error, |
| 207 | _bfd_bool_bfd_false_error |
| 208 | }, |
| 209 | { /* bfd_write_contents */ |
| 210 | _bfd_bool_bfd_false_error, |
| 211 | _bfd_bool_bfd_false_error, |
| 212 | _bfd_bool_bfd_false_error, |
| 213 | _bfd_bool_bfd_false_error |
| 214 | }, |
| 215 | |
| 216 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
| 217 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 218 | BFD_JUMP_TABLE_CORE (osf_core), |
| 219 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 220 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
| 221 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 222 | BFD_JUMP_TABLE_WRITE (_bfd_generic), |
| 223 | BFD_JUMP_TABLE_LINK (_bfd_nolink), |
| 224 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 225 | |
| 226 | NULL, |
| 227 | |
| 228 | NULL /* backend_data */ |
| 229 | }; |