| 1 | /* IBM RS/6000 "XCOFF" back-end for BFD. |
| 2 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
| 3 | Written by Metin G. Ozisik, Mimi Phuong-Thao Vo, and John Gilmore. |
| 4 | Archive support from Damon A. Permezel. |
| 5 | Contributed by IBM Corporation and Cygnus Support. |
| 6 | |
| 7 | This file is part of BFD, the Binary File Descriptor library. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 22 | MA 02110-1301, USA. */ |
| 23 | |
| 24 | |
| 25 | /* This port currently only handles reading object files, except when |
| 26 | compiled on an RS/6000 host. -- no archive support, no core files. |
| 27 | In all cases, it does not support writing. |
| 28 | |
| 29 | This is in a separate file from coff-rs6000.c, because it includes |
| 30 | system include files that conflict with coff/rs6000.h. */ |
| 31 | |
| 32 | /* Internalcoff.h and coffcode.h modify themselves based on this flag. */ |
| 33 | #define RS6000COFF_C 1 |
| 34 | |
| 35 | /* The AIX 4.1 kernel is obviously compiled with -D_LONG_LONG, so |
| 36 | we have to define _LONG_LONG for older versions of gcc to get the |
| 37 | proper alignments in the user structure. */ |
| 38 | #if defined(_AIX41) && !defined(_LONG_LONG) |
| 39 | #define _LONG_LONG |
| 40 | #endif |
| 41 | |
| 42 | #include "sysdep.h" |
| 43 | #include "bfd.h" |
| 44 | #include "libbfd.h" |
| 45 | |
| 46 | #ifdef AIX_CORE |
| 47 | |
| 48 | /* AOUTHDR is defined by the above. We need another defn of it, from the |
| 49 | system include files. Punt the old one and get us a new name for the |
| 50 | typedef in the system include files. */ |
| 51 | #ifdef AOUTHDR |
| 52 | #undef AOUTHDR |
| 53 | #endif |
| 54 | #define AOUTHDR second_AOUTHDR |
| 55 | |
| 56 | #undef SCNHDR |
| 57 | |
| 58 | /* Support for core file stuff. */ |
| 59 | |
| 60 | #include <sys/user.h> |
| 61 | #define __LDINFO_PTRACE32__ /* for __ld_info32 */ |
| 62 | #define __LDINFO_PTRACE64__ /* for __ld_info64 */ |
| 63 | #include <sys/ldr.h> |
| 64 | #include <sys/core.h> |
| 65 | #include <sys/systemcfg.h> |
| 66 | |
| 67 | /* Borrowed from <sys/inttypes.h> on recent AIX versions. */ |
| 68 | typedef unsigned long ptr_to_uint; |
| 69 | |
| 70 | #define core_hdr(bfd) ((CoreHdr *) bfd->tdata.any) |
| 71 | |
| 72 | /* AIX 4.1 changed the names and locations of a few items in the core file. |
| 73 | AIX 4.3 defined an entirely new structure, core_dumpx, but kept support for |
| 74 | the previous 4.1 structure, core_dump. |
| 75 | |
| 76 | AIX_CORE_DUMPX_CORE is defined (by configure) on AIX 4.3+, and |
| 77 | CORE_VERSION_1 is defined (by AIX core.h) as 2 on AIX 4.3+ and as 1 on AIX |
| 78 | 4.1 and 4.2. AIX pre-4.1 (aka 3.x) either doesn't define CORE_VERSION_1 |
| 79 | or else defines it as 0. */ |
| 80 | |
| 81 | #if defined(CORE_VERSION_1) && !CORE_VERSION_1 |
| 82 | # undef CORE_VERSION_1 |
| 83 | #endif |
| 84 | |
| 85 | /* The following union and macros allow this module to compile on all AIX |
| 86 | versions and to handle both core_dumpx and core_dump on 4.3+. CNEW_*() |
| 87 | and COLD_*() macros respectively retrieve core_dumpx and core_dump |
| 88 | values. */ |
| 89 | |
| 90 | /* Union of 32-bit and 64-bit versions of ld_info. */ |
| 91 | |
| 92 | typedef union |
| 93 | { |
| 94 | #if defined (__ld_info32) || defined (__ld_info64) |
| 95 | struct __ld_info32 l32; |
| 96 | struct __ld_info64 l64; |
| 97 | #else |
| 98 | struct ld_info l32; |
| 99 | struct ld_info l64; |
| 100 | #endif |
| 101 | } LdInfo; |
| 102 | |
| 103 | /* Union of old and new core dump structures. */ |
| 104 | |
| 105 | typedef union |
| 106 | { |
| 107 | #ifdef AIX_CORE_DUMPX_CORE |
| 108 | struct core_dumpx new_dump; /* New AIX 4.3+ core dump. */ |
| 109 | #else |
| 110 | struct core_dump new_dump; /* For simpler coding. */ |
| 111 | #endif |
| 112 | #ifndef BFD64 /* Use old only if gdb is 32-bit. */ |
| 113 | struct core_dump old; /* Old AIX 4.2- core dump, still used on |
| 114 | 4.3+ with appropriate SMIT config. */ |
| 115 | #endif |
| 116 | } CoreHdr; |
| 117 | |
| 118 | /* Union of old and new vm_info structures. */ |
| 119 | |
| 120 | #ifdef CORE_VERSION_1 |
| 121 | typedef union |
| 122 | { |
| 123 | #ifdef AIX_CORE_DUMPX_CORE |
| 124 | struct vm_infox new_dump; |
| 125 | #else |
| 126 | struct vm_info new_dump; |
| 127 | #endif |
| 128 | #ifndef BFD64 |
| 129 | struct vm_info old; |
| 130 | #endif |
| 131 | } VmInfo; |
| 132 | #endif |
| 133 | |
| 134 | /* Return whether CoreHdr C is in new or old format. */ |
| 135 | |
| 136 | #ifdef AIX_CORE_DUMPX_CORE |
| 137 | # ifndef BFD64 |
| 138 | # define CORE_NEW(c) (!(c).old.c_entries) |
| 139 | # else |
| 140 | # define CORE_NEW(c) 1 |
| 141 | # endif |
| 142 | #else |
| 143 | # define CORE_NEW(c) 0 |
| 144 | #endif |
| 145 | |
| 146 | /* Return whether CoreHdr C usese core_dumpxx structure. |
| 147 | |
| 148 | FIXME: the core file format version number used here definitely indicates |
| 149 | that struct core_dumpxx should be used to represent the core file header, |
| 150 | but that may not be the only such format version number. */ |
| 151 | |
| 152 | #ifdef AIX_5_CORE |
| 153 | # define CORE_DUMPXX_VERSION 267312562 |
| 154 | # define CNEW_IS_CORE_DUMPXX(c) ((c).new_dump.c_version == CORE_DUMPXX_VERSION) |
| 155 | #else |
| 156 | # define CNEW_IS_CORE_DUMPXX(c) 0 |
| 157 | #endif |
| 158 | |
| 159 | /* Return the c_stackorg field from struct core_dumpx C. */ |
| 160 | |
| 161 | #ifdef AIX_CORE_DUMPX_CORE |
| 162 | # define CNEW_STACKORG(c) (c).c_stackorg |
| 163 | #else |
| 164 | # define CNEW_STACKORG(c) 0 |
| 165 | #endif |
| 166 | |
| 167 | /* Return the offset to the loader region from struct core_dump C. */ |
| 168 | |
| 169 | #ifdef AIX_CORE_DUMPX_CORE |
| 170 | # define CNEW_LOADER(c) (c).c_loader |
| 171 | #else |
| 172 | # define CNEW_LOADER(c) 0 |
| 173 | #endif |
| 174 | |
| 175 | /* Return the offset to the loader region from struct core_dump C. */ |
| 176 | |
| 177 | #define COLD_LOADER(c) (c).c_tab |
| 178 | |
| 179 | /* Return the c_lsize field from struct core_dumpx C. */ |
| 180 | |
| 181 | #ifdef AIX_CORE_DUMPX_CORE |
| 182 | # define CNEW_LSIZE(c) (c).c_lsize |
| 183 | #else |
| 184 | # define CNEW_LSIZE(c) 0 |
| 185 | #endif |
| 186 | |
| 187 | /* Return the c_dataorg field from struct core_dumpx C. */ |
| 188 | |
| 189 | #ifdef AIX_CORE_DUMPX_CORE |
| 190 | # define CNEW_DATAORG(c) (c).c_dataorg |
| 191 | #else |
| 192 | # define CNEW_DATAORG(c) 0 |
| 193 | #endif |
| 194 | |
| 195 | /* Return the c_datasize field from struct core_dumpx C. */ |
| 196 | |
| 197 | #ifdef AIX_CORE_DUMPX_CORE |
| 198 | # define CNEW_DATASIZE(c) (c).c_datasize |
| 199 | #else |
| 200 | # define CNEW_DATASIZE(c) 0 |
| 201 | #endif |
| 202 | |
| 203 | /* Return the c_impl field from struct core_dumpx C. */ |
| 204 | |
| 205 | #if defined (HAVE_ST_C_IMPL) || defined (AIX_5_CORE) |
| 206 | # define CNEW_IMPL(c) (c).c_impl |
| 207 | #else |
| 208 | # define CNEW_IMPL(c) 0 |
| 209 | #endif |
| 210 | |
| 211 | /* Return the command string from struct core_dumpx C. */ |
| 212 | |
| 213 | #ifdef AIX_CORE_DUMPX_CORE |
| 214 | # define CNEW_COMM(c) (c).c_u.U_proc.pi_comm |
| 215 | #else |
| 216 | # define CNEW_COMM(c) 0 |
| 217 | #endif |
| 218 | |
| 219 | /* Return the command string from struct core_dump C. */ |
| 220 | |
| 221 | #ifdef CORE_VERSION_1 |
| 222 | # define COLD_COMM(c) (c).c_u.U_comm |
| 223 | #else |
| 224 | # define COLD_COMM(c) (c).c_u.u_comm |
| 225 | #endif |
| 226 | |
| 227 | /* Return the struct __context64 pointer from struct core_dumpx C. */ |
| 228 | |
| 229 | #ifdef AIX_CORE_DUMPX_CORE |
| 230 | # define CNEW_CONTEXT64(c) (c).c_flt.hctx.r64 |
| 231 | #else |
| 232 | # define CNEW_CONTEXT64(c) c |
| 233 | #endif |
| 234 | |
| 235 | /* Return the struct mstsave pointer from struct core_dumpx C. */ |
| 236 | |
| 237 | #ifdef AIX_CORE_DUMPX_CORE |
| 238 | # define CNEW_MSTSAVE(c) (c).c_flt.hctx.r32 |
| 239 | #else |
| 240 | # define CNEW_MSTSAVE(c) c |
| 241 | #endif |
| 242 | |
| 243 | /* Return the struct mstsave pointer from struct core_dump C. */ |
| 244 | |
| 245 | #ifdef CORE_VERSION_1 |
| 246 | # define COLD_MSTSAVE(c) (c).c_mst |
| 247 | #else |
| 248 | # define COLD_MSTSAVE(c) (c).c_u.u_save |
| 249 | #endif |
| 250 | |
| 251 | /* Return whether struct core_dumpx is from a 64-bit process. */ |
| 252 | |
| 253 | #ifdef AIX_CORE_DUMPX_CORE |
| 254 | # define CNEW_PROC64(c) IS_PROC64(&(c).c_u.U_proc) |
| 255 | #else |
| 256 | # define CNEW_PROC64(c) 0 |
| 257 | #endif |
| 258 | |
| 259 | /* Magic end-of-stack addresses for old core dumps. This is _very_ fragile, |
| 260 | but I don't see any easy way to get that info right now. */ |
| 261 | |
| 262 | #ifdef CORE_VERSION_1 |
| 263 | # define COLD_STACKEND 0x2ff23000 |
| 264 | #else |
| 265 | # define COLD_STACKEND 0x2ff80000 |
| 266 | #endif |
| 267 | |
| 268 | /* Size of the leading portion that old and new core dump structures have in |
| 269 | common. */ |
| 270 | #ifdef AIX_CORE_DUMPX_CORE |
| 271 | #define CORE_COMMONSZ ((long) &((struct core_dumpx *) 0)->c_entries \ |
| 272 | + sizeof (((struct core_dumpx *) 0)->c_entries)) |
| 273 | #else |
| 274 | #define CORE_COMMONSZ ((int) &((struct core_dump *) 0)->c_entries \ |
| 275 | + sizeof (((struct core_dump *) 0)->c_entries)) |
| 276 | #endif |
| 277 | /* Define prototypes for certain functions, to avoid a compiler warning |
| 278 | saying that they are missing. */ |
| 279 | |
| 280 | const bfd_target * rs6000coff_core_p (bfd *abfd); |
| 281 | bfd_boolean rs6000coff_core_file_matches_executable_p (bfd *core_bfd, |
| 282 | bfd *exec_bfd); |
| 283 | char * rs6000coff_core_file_failing_command (bfd *abfd); |
| 284 | int rs6000coff_core_file_failing_signal (bfd *abfd); |
| 285 | |
| 286 | /* Try to read into CORE the header from the core file associated with ABFD. |
| 287 | Return success. */ |
| 288 | |
| 289 | static bfd_boolean |
| 290 | read_hdr (bfd *abfd, CoreHdr *core) |
| 291 | { |
| 292 | bfd_size_type size; |
| 293 | |
| 294 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 295 | return FALSE; |
| 296 | |
| 297 | /* Read the leading portion that old and new core dump structures have in |
| 298 | common. */ |
| 299 | size = CORE_COMMONSZ; |
| 300 | if (bfd_bread (core, size, abfd) != size) |
| 301 | return FALSE; |
| 302 | |
| 303 | /* Read the trailing portion of the structure. */ |
| 304 | if (CORE_NEW (*core)) |
| 305 | size = sizeof (core->new_dump); |
| 306 | #ifndef BFD64 |
| 307 | else |
| 308 | size = sizeof (core->old); |
| 309 | #endif |
| 310 | size -= CORE_COMMONSZ; |
| 311 | return bfd_bread ((char *) core + CORE_COMMONSZ, size, abfd) == size; |
| 312 | } |
| 313 | |
| 314 | static asection * |
| 315 | make_bfd_asection (bfd *abfd, const char *name, flagword flags, |
| 316 | bfd_size_type size, bfd_vma vma, file_ptr filepos) |
| 317 | { |
| 318 | asection *asect; |
| 319 | |
| 320 | asect = bfd_make_section_anyway_with_flags (abfd, name, flags); |
| 321 | if (!asect) |
| 322 | return NULL; |
| 323 | |
| 324 | asect->size = size; |
| 325 | asect->vma = vma; |
| 326 | asect->filepos = filepos; |
| 327 | asect->alignment_power = 8; |
| 328 | |
| 329 | return asect; |
| 330 | } |
| 331 | |
| 332 | /* Decide if a given bfd represents a `core' file or not. There really is no |
| 333 | magic number or anything like, in rs6000coff. */ |
| 334 | |
| 335 | const bfd_target * |
| 336 | rs6000coff_core_p (bfd *abfd) |
| 337 | { |
| 338 | CoreHdr core; |
| 339 | struct stat statbuf; |
| 340 | bfd_size_type size; |
| 341 | char *tmpptr; |
| 342 | |
| 343 | /* Values from new and old core structures. */ |
| 344 | int c_flag; |
| 345 | file_ptr c_stack, c_regoff, c_loader; |
| 346 | bfd_size_type c_size, c_regsize, c_lsize; |
| 347 | bfd_vma c_stackend; |
| 348 | void *c_regptr; |
| 349 | int proc64; |
| 350 | |
| 351 | if (!read_hdr (abfd, &core)) |
| 352 | { |
| 353 | if (bfd_get_error () != bfd_error_system_call) |
| 354 | bfd_set_error (bfd_error_wrong_format); |
| 355 | return NULL; |
| 356 | } |
| 357 | |
| 358 | /* This isn't the right handler for 64-bit core files on AIX 5.x. */ |
| 359 | if (CORE_NEW (core) && CNEW_IS_CORE_DUMPXX (core)) |
| 360 | { |
| 361 | bfd_set_error (bfd_error_wrong_format); |
| 362 | return NULL; |
| 363 | } |
| 364 | |
| 365 | /* Copy fields from new or old core structure. */ |
| 366 | if (CORE_NEW (core)) |
| 367 | { |
| 368 | c_flag = core.new_dump.c_flag; |
| 369 | c_stack = (file_ptr) core.new_dump.c_stack; |
| 370 | c_size = core.new_dump.c_size; |
| 371 | c_stackend = CNEW_STACKORG (core.new_dump) + c_size; |
| 372 | c_lsize = CNEW_LSIZE (core.new_dump); |
| 373 | c_loader = CNEW_LOADER (core.new_dump); |
| 374 | #ifndef BFD64 |
| 375 | proc64 = CNEW_PROC64 (core.new_dump); |
| 376 | } |
| 377 | else |
| 378 | { |
| 379 | c_flag = core.old.c_flag; |
| 380 | c_stack = (file_ptr) (ptr_to_uint) core.old.c_stack; |
| 381 | c_size = core.old.c_size; |
| 382 | c_stackend = COLD_STACKEND; |
| 383 | c_lsize = 0x7ffffff; |
| 384 | c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); |
| 385 | #endif |
| 386 | proc64 = 0; |
| 387 | } |
| 388 | |
| 389 | if (proc64) |
| 390 | { |
| 391 | c_regsize = sizeof (CNEW_CONTEXT64 (core.new_dump)); |
| 392 | c_regptr = &CNEW_CONTEXT64 (core.new_dump); |
| 393 | } |
| 394 | else if (CORE_NEW (core)) |
| 395 | { |
| 396 | c_regsize = sizeof (CNEW_MSTSAVE (core.new_dump)); |
| 397 | c_regptr = &CNEW_MSTSAVE (core.new_dump); |
| 398 | } |
| 399 | #ifndef BFD64 |
| 400 | else |
| 401 | { |
| 402 | c_regsize = sizeof (COLD_MSTSAVE (core.old)); |
| 403 | c_regptr = &COLD_MSTSAVE (core.old); |
| 404 | } |
| 405 | #endif |
| 406 | c_regoff = (char *) c_regptr - (char *) &core; |
| 407 | |
| 408 | if (bfd_stat (abfd, &statbuf) < 0) |
| 409 | { |
| 410 | bfd_set_error (bfd_error_system_call); |
| 411 | return NULL; |
| 412 | } |
| 413 | |
| 414 | /* If the core file ulimit is too small, the system will first |
| 415 | omit the data segment, then omit the stack, then decline to |
| 416 | dump core altogether (as far as I know UBLOCK_VALID and LE_VALID |
| 417 | are always set) (this is based on experimentation on AIX 3.2). |
| 418 | Now, the thing is that GDB users will be surprised |
| 419 | if segments just silently don't appear (well, maybe they would |
| 420 | think to check "info files", I don't know). |
| 421 | |
| 422 | For the data segment, we have no choice but to keep going if it's |
| 423 | not there, since the default behavior is not to dump it (regardless |
| 424 | of the ulimit, it's based on SA_FULLDUMP). But for the stack segment, |
| 425 | if it's not there, we refuse to have anything to do with this core |
| 426 | file. The usefulness of a core dump without a stack segment is pretty |
| 427 | limited anyway. */ |
| 428 | |
| 429 | if (!(c_flag & UBLOCK_VALID) |
| 430 | || !(c_flag & LE_VALID)) |
| 431 | { |
| 432 | bfd_set_error (bfd_error_wrong_format); |
| 433 | return NULL; |
| 434 | } |
| 435 | |
| 436 | if (!(c_flag & USTACK_VALID)) |
| 437 | { |
| 438 | bfd_set_error (bfd_error_file_truncated); |
| 439 | return NULL; |
| 440 | } |
| 441 | |
| 442 | /* Don't check the core file size for a full core, AIX 4.1 includes |
| 443 | additional shared library sections in a full core. */ |
| 444 | if (!(c_flag & (FULL_CORE | CORE_TRUNC))) |
| 445 | { |
| 446 | /* If the size is wrong, it means we're misinterpreting something. */ |
| 447 | if (c_stack + (file_ptr) c_size != statbuf.st_size) |
| 448 | { |
| 449 | bfd_set_error (bfd_error_wrong_format); |
| 450 | return NULL; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* Sanity check on the c_tab field. */ |
| 455 | if (!CORE_NEW (core) |
| 456 | && ( |
| 457 | #ifndef BFD64 |
| 458 | c_loader < (file_ptr) sizeof core.old |
| 459 | #else |
| 460 | c_loader < (file_ptr) sizeof core.new_dump |
| 461 | #endif |
| 462 | || c_loader >= statbuf.st_size |
| 463 | || c_loader >= c_stack)) |
| 464 | { |
| 465 | bfd_set_error (bfd_error_wrong_format); |
| 466 | return NULL; |
| 467 | } |
| 468 | |
| 469 | /* Issue warning if the core file was truncated during writing. */ |
| 470 | if (c_flag & CORE_TRUNC) |
| 471 | _bfd_error_handler (_("%pB: warning core file truncated"), abfd); |
| 472 | |
| 473 | /* Allocate core file header. */ |
| 474 | #ifndef BFD64 |
| 475 | size = CORE_NEW (core) ? sizeof (core.new_dump) : sizeof (core.old); |
| 476 | #else |
| 477 | size = sizeof (core.new_dump); |
| 478 | #endif |
| 479 | tmpptr = (char *) bfd_zalloc (abfd, (bfd_size_type) size); |
| 480 | if (!tmpptr) |
| 481 | return NULL; |
| 482 | |
| 483 | /* Copy core file header. */ |
| 484 | memcpy (tmpptr, &core, size); |
| 485 | set_tdata (abfd, tmpptr); |
| 486 | |
| 487 | /* Set architecture. */ |
| 488 | if (CORE_NEW (core)) |
| 489 | { |
| 490 | enum bfd_architecture arch; |
| 491 | unsigned long mach; |
| 492 | |
| 493 | switch (CNEW_IMPL (core.new_dump)) |
| 494 | { |
| 495 | case POWER_RS1: |
| 496 | case POWER_RSC: |
| 497 | case POWER_RS2: |
| 498 | arch = bfd_arch_rs6000; |
| 499 | mach = bfd_mach_rs6k; |
| 500 | break; |
| 501 | default: |
| 502 | arch = bfd_arch_powerpc; |
| 503 | mach = bfd_mach_ppc; |
| 504 | break; |
| 505 | } |
| 506 | bfd_default_set_arch_mach (abfd, arch, mach); |
| 507 | } |
| 508 | |
| 509 | /* .stack section. */ |
| 510 | if (!make_bfd_asection (abfd, ".stack", |
| 511 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 512 | c_size, c_stackend - c_size, c_stack)) |
| 513 | goto fail; |
| 514 | |
| 515 | /* .reg section for all registers. */ |
| 516 | if (!make_bfd_asection (abfd, ".reg", |
| 517 | SEC_HAS_CONTENTS, |
| 518 | c_regsize, (bfd_vma) 0, c_regoff)) |
| 519 | goto fail; |
| 520 | |
| 521 | /* .ldinfo section. |
| 522 | To actually find out how long this section is in this particular |
| 523 | core dump would require going down the whole list of struct ld_info's. |
| 524 | See if we can just fake it. */ |
| 525 | if (!make_bfd_asection (abfd, ".ldinfo", |
| 526 | SEC_HAS_CONTENTS, |
| 527 | c_lsize, (bfd_vma) 0, c_loader)) |
| 528 | goto fail; |
| 529 | |
| 530 | #ifndef CORE_VERSION_1 |
| 531 | /* .data section if present. |
| 532 | AIX 3 dumps the complete data section and sets FULL_CORE if the |
| 533 | ulimit is large enough, otherwise the data section is omitted. |
| 534 | AIX 4 sets FULL_CORE even if the core file is truncated, we have |
| 535 | to examine core.c_datasize below to find out the actual size of |
| 536 | the .data section. */ |
| 537 | if (c_flag & FULL_CORE) |
| 538 | { |
| 539 | if (!make_bfd_asection (abfd, ".data", |
| 540 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 541 | (bfd_size_type) core.old.c_u.u_dsize, |
| 542 | (bfd_vma) |
| 543 | CDATA_ADDR (core.old.c_u.u_dsize), |
| 544 | c_stack + c_size)) |
| 545 | goto fail; |
| 546 | } |
| 547 | #endif |
| 548 | |
| 549 | #ifdef CORE_VERSION_1 |
| 550 | /* AIX 4 adds data sections from loaded objects to the core file, |
| 551 | which can be found by examining ldinfo, and anonymously mmapped |
| 552 | regions. */ |
| 553 | { |
| 554 | LdInfo ldinfo; |
| 555 | bfd_size_type ldi_datasize; |
| 556 | file_ptr ldi_core; |
| 557 | uint ldi_next; |
| 558 | bfd_vma ldi_dataorg; |
| 559 | bfd_vma core_dataorg; |
| 560 | |
| 561 | /* Fields from new and old core structures. */ |
| 562 | bfd_size_type c_datasize, c_vmregions; |
| 563 | file_ptr c_data, c_vmm; |
| 564 | |
| 565 | if (CORE_NEW (core)) |
| 566 | { |
| 567 | c_datasize = CNEW_DATASIZE (core.new_dump); |
| 568 | c_data = (file_ptr) core.new_dump.c_data; |
| 569 | c_vmregions = core.new_dump.c_vmregions; |
| 570 | c_vmm = (file_ptr) core.new_dump.c_vmm; |
| 571 | } |
| 572 | #ifndef BFD64 |
| 573 | else |
| 574 | { |
| 575 | c_datasize = core.old.c_datasize; |
| 576 | c_data = (file_ptr) (ptr_to_uint) core.old.c_data; |
| 577 | c_vmregions = core.old.c_vmregions; |
| 578 | c_vmm = (file_ptr) (ptr_to_uint) core.old.c_vmm; |
| 579 | } |
| 580 | #endif |
| 581 | |
| 582 | /* .data section from executable. */ |
| 583 | if (c_datasize) |
| 584 | { |
| 585 | /* If Large Memory Model is used, then the .data segment should start from |
| 586 | BDATAORG which has been defined in the system header files. */ |
| 587 | |
| 588 | if (c_flag & CORE_BIGDATA) |
| 589 | core_dataorg = BDATAORG; |
| 590 | else |
| 591 | core_dataorg = CDATA_ADDR (c_datasize); |
| 592 | |
| 593 | if (!make_bfd_asection (abfd, ".data", |
| 594 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 595 | c_datasize, |
| 596 | (bfd_vma) core_dataorg, |
| 597 | c_data)) |
| 598 | goto fail; |
| 599 | } |
| 600 | |
| 601 | /* .data sections from loaded objects. */ |
| 602 | if (proc64) |
| 603 | size = (unsigned long) ((LdInfo *) 0)->l64.ldinfo_filename; |
| 604 | else |
| 605 | size = (unsigned long) ((LdInfo *) 0)->l32.ldinfo_filename; |
| 606 | |
| 607 | while (1) |
| 608 | { |
| 609 | if (bfd_seek (abfd, c_loader, SEEK_SET) != 0) |
| 610 | goto fail; |
| 611 | if (bfd_bread (&ldinfo, size, abfd) != size) |
| 612 | goto fail; |
| 613 | |
| 614 | if (proc64) |
| 615 | { |
| 616 | ldi_core = ldinfo.l64.ldinfo_core; |
| 617 | ldi_datasize = ldinfo.l64.ldinfo_datasize; |
| 618 | ldi_dataorg = (bfd_vma) ldinfo.l64.ldinfo_dataorg; |
| 619 | ldi_next = ldinfo.l64.ldinfo_next; |
| 620 | } |
| 621 | else |
| 622 | { |
| 623 | ldi_core = ldinfo.l32.ldinfo_core; |
| 624 | ldi_datasize = ldinfo.l32.ldinfo_datasize; |
| 625 | ldi_dataorg = (bfd_vma) (ptr_to_uint) ldinfo.l32.ldinfo_dataorg; |
| 626 | ldi_next = ldinfo.l32.ldinfo_next; |
| 627 | } |
| 628 | |
| 629 | if (ldi_core) |
| 630 | if (!make_bfd_asection (abfd, ".data", |
| 631 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 632 | ldi_datasize, ldi_dataorg, ldi_core)) |
| 633 | goto fail; |
| 634 | |
| 635 | if (ldi_next == 0) |
| 636 | break; |
| 637 | c_loader += ldi_next; |
| 638 | } |
| 639 | |
| 640 | /* .vmdata sections from anonymously mmapped regions. */ |
| 641 | if (c_vmregions) |
| 642 | { |
| 643 | bfd_size_type i; |
| 644 | |
| 645 | if (bfd_seek (abfd, c_vmm, SEEK_SET) != 0) |
| 646 | goto fail; |
| 647 | |
| 648 | for (i = 0; i < c_vmregions; i++) |
| 649 | { |
| 650 | VmInfo vminfo; |
| 651 | bfd_size_type vminfo_size; |
| 652 | file_ptr vminfo_offset; |
| 653 | bfd_vma vminfo_addr; |
| 654 | |
| 655 | #ifndef BFD64 |
| 656 | size = CORE_NEW (core) ? sizeof (vminfo.new_dump) : sizeof (vminfo.old); |
| 657 | #else |
| 658 | size = sizeof (vminfo.new_dump); |
| 659 | #endif |
| 660 | if (bfd_bread (&vminfo, size, abfd) != size) |
| 661 | goto fail; |
| 662 | |
| 663 | if (CORE_NEW (core)) |
| 664 | { |
| 665 | vminfo_addr = (bfd_vma) vminfo.new_dump.vminfo_addr; |
| 666 | vminfo_size = vminfo.new_dump.vminfo_size; |
| 667 | vminfo_offset = vminfo.new_dump.vminfo_offset; |
| 668 | } |
| 669 | #ifndef BFD64 |
| 670 | else |
| 671 | { |
| 672 | vminfo_addr = (bfd_vma) (ptr_to_uint) vminfo.old.vminfo_addr; |
| 673 | vminfo_size = vminfo.old.vminfo_size; |
| 674 | vminfo_offset = vminfo.old.vminfo_offset; |
| 675 | } |
| 676 | #endif |
| 677 | |
| 678 | if (vminfo_offset) |
| 679 | if (!make_bfd_asection (abfd, ".vmdata", |
| 680 | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, |
| 681 | vminfo_size, vminfo_addr, |
| 682 | vminfo_offset)) |
| 683 | goto fail; |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | #endif |
| 688 | |
| 689 | return abfd->xvec; /* This is garbage for now. */ |
| 690 | |
| 691 | fail: |
| 692 | bfd_release (abfd, abfd->tdata.any); |
| 693 | abfd->tdata.any = NULL; |
| 694 | bfd_section_list_clear (abfd); |
| 695 | return NULL; |
| 696 | } |
| 697 | |
| 698 | /* Return `TRUE' if given core is from the given executable. */ |
| 699 | |
| 700 | bfd_boolean |
| 701 | rs6000coff_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) |
| 702 | { |
| 703 | CoreHdr core; |
| 704 | bfd_size_type size; |
| 705 | char *path, *s; |
| 706 | size_t alloc; |
| 707 | const char *str1, *str2; |
| 708 | bfd_boolean ret; |
| 709 | file_ptr c_loader; |
| 710 | |
| 711 | if (!read_hdr (core_bfd, &core)) |
| 712 | return FALSE; |
| 713 | |
| 714 | if (CORE_NEW (core)) |
| 715 | c_loader = CNEW_LOADER (core.new_dump); |
| 716 | #ifndef BFD64 |
| 717 | else |
| 718 | c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); |
| 719 | #endif |
| 720 | |
| 721 | if (CORE_NEW (core) && CNEW_PROC64 (core.new_dump)) |
| 722 | size = (int) ((LdInfo *) 0)->l64.ldinfo_filename; |
| 723 | else |
| 724 | size = (int) ((LdInfo *) 0)->l32.ldinfo_filename; |
| 725 | |
| 726 | if (bfd_seek (core_bfd, c_loader + size, SEEK_SET) != 0) |
| 727 | return FALSE; |
| 728 | |
| 729 | alloc = 100; |
| 730 | path = bfd_malloc ((bfd_size_type) alloc); |
| 731 | if (path == NULL) |
| 732 | return FALSE; |
| 733 | s = path; |
| 734 | |
| 735 | while (1) |
| 736 | { |
| 737 | if (bfd_bread (s, (bfd_size_type) 1, core_bfd) != 1) |
| 738 | { |
| 739 | free (path); |
| 740 | return FALSE; |
| 741 | } |
| 742 | if (*s == '\0') |
| 743 | break; |
| 744 | ++s; |
| 745 | if (s == path + alloc) |
| 746 | { |
| 747 | char *n; |
| 748 | |
| 749 | alloc *= 2; |
| 750 | n = bfd_realloc (path, (bfd_size_type) alloc); |
| 751 | if (n == NULL) |
| 752 | { |
| 753 | free (path); |
| 754 | return FALSE; |
| 755 | } |
| 756 | s = n + (path - s); |
| 757 | path = n; |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | str1 = strrchr (path, '/'); |
| 762 | str2 = strrchr (exec_bfd->filename, '/'); |
| 763 | |
| 764 | /* step over character '/' */ |
| 765 | str1 = str1 != NULL ? str1 + 1 : path; |
| 766 | str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename; |
| 767 | |
| 768 | if (strcmp (str1, str2) == 0) |
| 769 | ret = TRUE; |
| 770 | else |
| 771 | ret = FALSE; |
| 772 | |
| 773 | free (path); |
| 774 | |
| 775 | return ret; |
| 776 | } |
| 777 | |
| 778 | char * |
| 779 | rs6000coff_core_file_failing_command (bfd *abfd) |
| 780 | { |
| 781 | CoreHdr *core = core_hdr (abfd); |
| 782 | #ifndef BFD64 |
| 783 | char *com = CORE_NEW (*core) ? |
| 784 | CNEW_COMM (core->new_dump) : COLD_COMM (core->old); |
| 785 | #else |
| 786 | char *com = CNEW_COMM (core->new_dump); |
| 787 | #endif |
| 788 | |
| 789 | if (*com) |
| 790 | return com; |
| 791 | else |
| 792 | return 0; |
| 793 | } |
| 794 | |
| 795 | int |
| 796 | rs6000coff_core_file_failing_signal (bfd *abfd) |
| 797 | { |
| 798 | CoreHdr *core = core_hdr (abfd); |
| 799 | #ifndef BFD64 |
| 800 | return CORE_NEW (*core) ? core->new_dump.c_signo : core->old.c_signo; |
| 801 | #else |
| 802 | return core->new_dump.c_signo; |
| 803 | #endif |
| 804 | } |
| 805 | |
| 806 | #endif /* AIX_CORE */ |