| 1 | /* BFD back-end for Irix core files. |
| 2 | Copyright (C) 1993-2019 Free Software Foundation, Inc. |
| 3 | Written by Stu Grossman, Cygnus Support. |
| 4 | Converted to back-end form by Ian Lance Taylor, Cygnus Support |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | |
| 24 | /* This file can only be compiled on systems which use Irix style core |
| 25 | files (namely, Irix 4 and Irix 5, so far). */ |
| 26 | |
| 27 | #include "sysdep.h" |
| 28 | #include "bfd.h" |
| 29 | #include "libbfd.h" |
| 30 | |
| 31 | #ifdef IRIX_CORE |
| 32 | |
| 33 | #include <core.out.h> |
| 34 | |
| 35 | struct sgi_core_struct |
| 36 | { |
| 37 | int sig; |
| 38 | char cmd[CORE_NAMESIZE]; |
| 39 | }; |
| 40 | |
| 41 | #define core_hdr(bfd) ((bfd)->tdata.sgi_core_data) |
| 42 | #define core_signal(bfd) (core_hdr(bfd)->sig) |
| 43 | #define core_command(bfd) (core_hdr(bfd)->cmd) |
| 44 | |
| 45 | #define irix_core_core_file_matches_executable_p generic_core_file_matches_executable_p |
| 46 | #define irix_core_core_file_pid _bfd_nocore_core_file_pid |
| 47 | |
| 48 | static asection *make_bfd_asection |
| 49 | (bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr); |
| 50 | |
| 51 | /* Helper function for irix_core_core_file_p: |
| 52 | 32-bit and 64-bit versions. */ |
| 53 | |
| 54 | #ifdef CORE_MAGIC64 |
| 55 | static int |
| 56 | do_sections64 (bfd *abfd, struct coreout *coreout) |
| 57 | { |
| 58 | struct vmap64 vmap; |
| 59 | char *secname; |
| 60 | int i, val; |
| 61 | |
| 62 | for (i = 0; i < coreout->c_nvmap; i++) |
| 63 | { |
| 64 | val = bfd_bread (&vmap, (bfd_size_type) sizeof vmap, abfd); |
| 65 | if (val != sizeof vmap) |
| 66 | break; |
| 67 | |
| 68 | switch (vmap.v_type) |
| 69 | { |
| 70 | case VDATA: |
| 71 | secname = ".data"; |
| 72 | break; |
| 73 | case VSTACK: |
| 74 | secname = ".stack"; |
| 75 | break; |
| 76 | #ifdef VMAPFILE |
| 77 | case VMAPFILE: |
| 78 | secname = ".mapfile"; |
| 79 | break; |
| 80 | #endif |
| 81 | default: |
| 82 | continue; |
| 83 | } |
| 84 | |
| 85 | /* A file offset of zero means that the |
| 86 | section is not contained in the corefile. */ |
| 87 | if (vmap.v_offset == 0) |
| 88 | continue; |
| 89 | |
| 90 | if (!make_bfd_asection (abfd, secname, |
| 91 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 92 | vmap.v_len, vmap.v_vaddr, vmap.v_offset)) |
| 93 | /* Fail. */ |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | return 1; |
| 98 | } |
| 99 | #endif |
| 100 | |
| 101 | /* 32-bit version. */ |
| 102 | |
| 103 | static int |
| 104 | do_sections (bfd *abfd, struct coreout *coreout) |
| 105 | { |
| 106 | struct vmap vmap; |
| 107 | char *secname; |
| 108 | int i, val; |
| 109 | |
| 110 | for (i = 0; i < coreout->c_nvmap; i++) |
| 111 | { |
| 112 | val = bfd_bread (&vmap, (bfd_size_type) sizeof vmap, abfd); |
| 113 | if (val != sizeof vmap) |
| 114 | break; |
| 115 | |
| 116 | switch (vmap.v_type) |
| 117 | { |
| 118 | case VDATA: |
| 119 | secname = ".data"; |
| 120 | break; |
| 121 | case VSTACK: |
| 122 | secname = ".stack"; |
| 123 | break; |
| 124 | #ifdef VMAPFILE |
| 125 | case VMAPFILE: |
| 126 | secname = ".mapfile"; |
| 127 | break; |
| 128 | #endif |
| 129 | default: |
| 130 | continue; |
| 131 | } |
| 132 | |
| 133 | /* A file offset of zero means that the |
| 134 | section is not contained in the corefile. */ |
| 135 | if (vmap.v_offset == 0) |
| 136 | continue; |
| 137 | |
| 138 | if (!make_bfd_asection (abfd, secname, |
| 139 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 140 | vmap.v_len, vmap.v_vaddr, vmap.v_offset)) |
| 141 | /* Fail. */ |
| 142 | return 0; |
| 143 | } |
| 144 | return 1; |
| 145 | } |
| 146 | |
| 147 | static asection * |
| 148 | make_bfd_asection (bfd *abfd, |
| 149 | const char *name, |
| 150 | flagword flags, |
| 151 | bfd_size_type size, |
| 152 | bfd_vma vma, |
| 153 | file_ptr filepos) |
| 154 | { |
| 155 | asection *asect; |
| 156 | |
| 157 | asect = bfd_make_section_anyway_with_flags (abfd, name, flags); |
| 158 | if (!asect) |
| 159 | return NULL; |
| 160 | |
| 161 | asect->size = size; |
| 162 | asect->vma = vma; |
| 163 | asect->filepos = filepos; |
| 164 | asect->alignment_power = 4; |
| 165 | |
| 166 | return asect; |
| 167 | } |
| 168 | |
| 169 | static const bfd_target * |
| 170 | irix_core_core_file_p (bfd *abfd) |
| 171 | { |
| 172 | int val; |
| 173 | struct coreout coreout; |
| 174 | struct idesc *idg, *idf, *ids; |
| 175 | bfd_size_type amt; |
| 176 | |
| 177 | val = bfd_bread (&coreout, (bfd_size_type) sizeof coreout, abfd); |
| 178 | if (val != sizeof coreout) |
| 179 | { |
| 180 | if (bfd_get_error () != bfd_error_system_call) |
| 181 | bfd_set_error (bfd_error_wrong_format); |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | if (coreout.c_version != CORE_VERSION1) |
| 186 | return 0; |
| 187 | |
| 188 | /* Have we got a corefile? */ |
| 189 | switch (coreout.c_magic) |
| 190 | { |
| 191 | case CORE_MAGIC: break; |
| 192 | #ifdef CORE_MAGIC64 |
| 193 | case CORE_MAGIC64: break; |
| 194 | #endif |
| 195 | #ifdef CORE_MAGICN32 |
| 196 | case CORE_MAGICN32: break; |
| 197 | #endif |
| 198 | default: return 0; /* Un-identifiable or not corefile. */ |
| 199 | } |
| 200 | |
| 201 | amt = sizeof (struct sgi_core_struct); |
| 202 | core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt); |
| 203 | if (!core_hdr (abfd)) |
| 204 | return NULL; |
| 205 | |
| 206 | strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE); |
| 207 | core_signal (abfd) = coreout.c_sigcause; |
| 208 | |
| 209 | if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0) |
| 210 | goto fail; |
| 211 | |
| 212 | /* Process corefile sections. */ |
| 213 | #ifdef CORE_MAGIC64 |
| 214 | if (coreout.c_magic == (int) CORE_MAGIC64) |
| 215 | { |
| 216 | if (! do_sections64 (abfd, & coreout)) |
| 217 | goto fail; |
| 218 | } |
| 219 | else |
| 220 | #endif |
| 221 | if (! do_sections (abfd, & coreout)) |
| 222 | goto fail; |
| 223 | |
| 224 | /* Make sure that the regs are contiguous within the core file. */ |
| 225 | |
| 226 | idg = &coreout.c_idesc[I_GPREGS]; |
| 227 | idf = &coreout.c_idesc[I_FPREGS]; |
| 228 | ids = &coreout.c_idesc[I_SPECREGS]; |
| 229 | |
| 230 | if (idg->i_offset + idg->i_len != idf->i_offset |
| 231 | || idf->i_offset + idf->i_len != ids->i_offset) |
| 232 | goto fail; /* Can't deal with non-contig regs */ |
| 233 | |
| 234 | if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0) |
| 235 | goto fail; |
| 236 | |
| 237 | if (!make_bfd_asection (abfd, ".reg", |
| 238 | SEC_HAS_CONTENTS, |
| 239 | idg->i_len + idf->i_len + ids->i_len, |
| 240 | 0, |
| 241 | idg->i_offset)) |
| 242 | goto fail; |
| 243 | |
| 244 | /* OK, we believe you. You're a core file (sure, sure). */ |
| 245 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0); |
| 246 | |
| 247 | return abfd->xvec; |
| 248 | |
| 249 | fail: |
| 250 | bfd_release (abfd, core_hdr (abfd)); |
| 251 | core_hdr (abfd) = NULL; |
| 252 | bfd_section_list_clear (abfd); |
| 253 | return NULL; |
| 254 | } |
| 255 | |
| 256 | static char * |
| 257 | irix_core_core_file_failing_command (bfd *abfd) |
| 258 | { |
| 259 | return core_command (abfd); |
| 260 | } |
| 261 | |
| 262 | static int |
| 263 | irix_core_core_file_failing_signal (bfd *abfd) |
| 264 | { |
| 265 | return core_signal (abfd); |
| 266 | } |
| 267 | |
| 268 | /* If somebody calls any byte-swapping routines, shoot them. */ |
| 269 | static void |
| 270 | swap_abort(void) |
| 271 | { |
| 272 | abort(); /* This way doesn't require any declaration for ANSI to fuck up */ |
| 273 | } |
| 274 | |
| 275 | #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) |
| 276 | #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) |
| 277 | #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) |
| 278 | #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) |
| 279 | #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) |
| 280 | #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) |
| 281 | |
| 282 | const bfd_target core_irix_vec = |
| 283 | { |
| 284 | "irix-core", |
| 285 | bfd_target_unknown_flavour, |
| 286 | BFD_ENDIAN_BIG, /* target byte order */ |
| 287 | BFD_ENDIAN_BIG, /* target headers byte order */ |
| 288 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 289 | HAS_LINENO | HAS_DEBUG | |
| 290 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 291 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 292 | 0, /* symbol prefix */ |
| 293 | ' ', /* ar_pad_char */ |
| 294 | 16, /* ar_max_namelen */ |
| 295 | 0, /* match_priority */ |
| 296 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ |
| 297 | NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ |
| 298 | NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ |
| 299 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ |
| 300 | NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ |
| 301 | NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ |
| 302 | |
| 303 | { /* bfd_check_format */ |
| 304 | _bfd_dummy_target, /* unknown format */ |
| 305 | _bfd_dummy_target, /* object file */ |
| 306 | _bfd_dummy_target, /* archive */ |
| 307 | irix_core_core_file_p /* a core file */ |
| 308 | }, |
| 309 | { /* bfd_set_format */ |
| 310 | _bfd_bool_bfd_false_error, |
| 311 | _bfd_bool_bfd_false_error, |
| 312 | _bfd_bool_bfd_false_error, |
| 313 | _bfd_bool_bfd_false_error |
| 314 | }, |
| 315 | { /* bfd_write_contents */ |
| 316 | _bfd_bool_bfd_false_error, |
| 317 | _bfd_bool_bfd_false_error, |
| 318 | _bfd_bool_bfd_false_error, |
| 319 | _bfd_bool_bfd_false_error |
| 320 | }, |
| 321 | |
| 322 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
| 323 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 324 | BFD_JUMP_TABLE_CORE (irix_core), |
| 325 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 326 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
| 327 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 328 | BFD_JUMP_TABLE_WRITE (_bfd_generic), |
| 329 | BFD_JUMP_TABLE_LINK (_bfd_nolink), |
| 330 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 331 | |
| 332 | NULL, |
| 333 | |
| 334 | NULL /* backend_data */ |
| 335 | }; |
| 336 | |
| 337 | #endif /* IRIX_CORE */ |