| 1 | /* Target-dependent code for FreeBSD, architecture-independent. |
| 2 | |
| 3 | Copyright (C) 2002-2017 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 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, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "auxv.h" |
| 22 | #include "gdbcore.h" |
| 23 | #include "inferior.h" |
| 24 | #include "regcache.h" |
| 25 | #include "regset.h" |
| 26 | #include "gdbthread.h" |
| 27 | #include "xml-syscall.h" |
| 28 | |
| 29 | #include "elf-bfd.h" |
| 30 | #include "fbsd-tdep.h" |
| 31 | |
| 32 | |
| 33 | /* FreeBSD kernels 12.0 and later include a copy of the |
| 34 | 'ptrace_lwpinfo' structure returned by the PT_LWPINFO ptrace |
| 35 | operation in an ELF core note (NT_FREEBSD_PTLWPINFO) for each LWP. |
| 36 | The constants below define the offset of field members and flags in |
| 37 | this structure used by methods in this file. Note that the |
| 38 | 'ptrace_lwpinfo' struct in the note is preceded by a 4 byte integer |
| 39 | containing the size of the structure. */ |
| 40 | |
| 41 | #define LWPINFO_OFFSET 0x4 |
| 42 | |
| 43 | /* Offsets in ptrace_lwpinfo. */ |
| 44 | #define LWPINFO_PL_FLAGS 0x8 |
| 45 | #define LWPINFO64_PL_SIGINFO 0x30 |
| 46 | #define LWPINFO32_PL_SIGINFO 0x2c |
| 47 | |
| 48 | /* Flags in pl_flags. */ |
| 49 | #define PL_FLAG_SI 0x20 /* siginfo is valid */ |
| 50 | |
| 51 | /* Sizes of siginfo_t. */ |
| 52 | #define SIZE64_SIGINFO_T 80 |
| 53 | #define SIZE32_SIGINFO_T 64 |
| 54 | |
| 55 | static struct gdbarch_data *fbsd_gdbarch_data_handle; |
| 56 | |
| 57 | struct fbsd_gdbarch_data |
| 58 | { |
| 59 | struct type *siginfo_type; |
| 60 | }; |
| 61 | |
| 62 | static void * |
| 63 | init_fbsd_gdbarch_data (struct gdbarch *gdbarch) |
| 64 | { |
| 65 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct fbsd_gdbarch_data); |
| 66 | } |
| 67 | |
| 68 | static struct fbsd_gdbarch_data * |
| 69 | get_fbsd_gdbarch_data (struct gdbarch *gdbarch) |
| 70 | { |
| 71 | return ((struct fbsd_gdbarch_data *) |
| 72 | gdbarch_data (gdbarch, fbsd_gdbarch_data_handle)); |
| 73 | } |
| 74 | |
| 75 | /* This is how we want PTIDs from core files to be printed. */ |
| 76 | |
| 77 | static const char * |
| 78 | fbsd_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) |
| 79 | { |
| 80 | static char buf[80]; |
| 81 | |
| 82 | if (ptid_get_lwp (ptid) != 0) |
| 83 | { |
| 84 | xsnprintf (buf, sizeof buf, "LWP %ld", ptid_get_lwp (ptid)); |
| 85 | return buf; |
| 86 | } |
| 87 | |
| 88 | return normal_pid_to_str (ptid); |
| 89 | } |
| 90 | |
| 91 | /* Extract the name assigned to a thread from a core. Returns the |
| 92 | string in a static buffer. */ |
| 93 | |
| 94 | static const char * |
| 95 | fbsd_core_thread_name (struct gdbarch *gdbarch, struct thread_info *thr) |
| 96 | { |
| 97 | static char buf[80]; |
| 98 | struct bfd_section *section; |
| 99 | bfd_size_type size; |
| 100 | |
| 101 | if (ptid_get_lwp (thr->ptid) != 0) |
| 102 | { |
| 103 | /* FreeBSD includes a NT_FREEBSD_THRMISC note for each thread |
| 104 | whose contents are defined by a "struct thrmisc" declared in |
| 105 | <sys/procfs.h> on FreeBSD. The per-thread name is stored as |
| 106 | a null-terminated string as the first member of the |
| 107 | structure. Rather than define the full structure here, just |
| 108 | extract the null-terminated name from the start of the |
| 109 | note. */ |
| 110 | thread_section_name section_name (".thrmisc", thr->ptid); |
| 111 | |
| 112 | section = bfd_get_section_by_name (core_bfd, section_name.c_str ()); |
| 113 | if (section != NULL && bfd_section_size (core_bfd, section) > 0) |
| 114 | { |
| 115 | /* Truncate the name if it is longer than "buf". */ |
| 116 | size = bfd_section_size (core_bfd, section); |
| 117 | if (size > sizeof buf - 1) |
| 118 | size = sizeof buf - 1; |
| 119 | if (bfd_get_section_contents (core_bfd, section, buf, (file_ptr) 0, |
| 120 | size) |
| 121 | && buf[0] != '\0') |
| 122 | { |
| 123 | buf[size] = '\0'; |
| 124 | |
| 125 | /* Note that each thread will report the process command |
| 126 | as its thread name instead of an empty name if a name |
| 127 | has not been set explicitly. Return a NULL name in |
| 128 | that case. */ |
| 129 | if (strcmp (buf, elf_tdata (core_bfd)->core->program) != 0) |
| 130 | return buf; |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | return NULL; |
| 136 | } |
| 137 | |
| 138 | /* Implement the "core_xfer_siginfo" gdbarch method. */ |
| 139 | |
| 140 | static LONGEST |
| 141 | fbsd_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf, |
| 142 | ULONGEST offset, ULONGEST len) |
| 143 | { |
| 144 | size_t siginfo_size; |
| 145 | |
| 146 | if (gdbarch_long_bit (gdbarch) == 32) |
| 147 | siginfo_size = SIZE32_SIGINFO_T; |
| 148 | else |
| 149 | siginfo_size = SIZE64_SIGINFO_T; |
| 150 | if (offset > siginfo_size) |
| 151 | return -1; |
| 152 | |
| 153 | thread_section_name section_name (".note.freebsdcore.lwpinfo", inferior_ptid); |
| 154 | asection *section = bfd_get_section_by_name (core_bfd, section_name.c_str ()); |
| 155 | if (section == NULL) |
| 156 | return -1; |
| 157 | |
| 158 | gdb_byte buf[4]; |
| 159 | if (!bfd_get_section_contents (core_bfd, section, buf, |
| 160 | LWPINFO_OFFSET + LWPINFO_PL_FLAGS, 4)) |
| 161 | return -1; |
| 162 | |
| 163 | int pl_flags = extract_signed_integer (buf, 4, gdbarch_byte_order (gdbarch)); |
| 164 | if (!(pl_flags & PL_FLAG_SI)) |
| 165 | return -1; |
| 166 | |
| 167 | if (offset + len > siginfo_size) |
| 168 | len = siginfo_size - offset; |
| 169 | |
| 170 | ULONGEST siginfo_offset; |
| 171 | if (gdbarch_long_bit (gdbarch) == 32) |
| 172 | siginfo_offset = LWPINFO_OFFSET + LWPINFO32_PL_SIGINFO; |
| 173 | else |
| 174 | siginfo_offset = LWPINFO_OFFSET + LWPINFO64_PL_SIGINFO; |
| 175 | |
| 176 | if (!bfd_get_section_contents (core_bfd, section, readbuf, |
| 177 | siginfo_offset + offset, len)) |
| 178 | return -1; |
| 179 | |
| 180 | return len; |
| 181 | } |
| 182 | |
| 183 | static int |
| 184 | find_signalled_thread (struct thread_info *info, void *data) |
| 185 | { |
| 186 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
| 187 | && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid)) |
| 188 | return 1; |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | /* Structure for passing information from |
| 194 | fbsd_collect_thread_registers via an iterator to |
| 195 | fbsd_collect_regset_section_cb. */ |
| 196 | |
| 197 | struct fbsd_collect_regset_section_cb_data |
| 198 | { |
| 199 | const struct regcache *regcache; |
| 200 | bfd *obfd; |
| 201 | char *note_data; |
| 202 | int *note_size; |
| 203 | unsigned long lwp; |
| 204 | enum gdb_signal stop_signal; |
| 205 | int abort_iteration; |
| 206 | }; |
| 207 | |
| 208 | static void |
| 209 | fbsd_collect_regset_section_cb (const char *sect_name, int size, |
| 210 | const struct regset *regset, |
| 211 | const char *human_name, void *cb_data) |
| 212 | { |
| 213 | char *buf; |
| 214 | struct fbsd_collect_regset_section_cb_data *data |
| 215 | = (struct fbsd_collect_regset_section_cb_data *) cb_data; |
| 216 | |
| 217 | if (data->abort_iteration) |
| 218 | return; |
| 219 | |
| 220 | gdb_assert (regset->collect_regset); |
| 221 | |
| 222 | buf = (char *) xmalloc (size); |
| 223 | regset->collect_regset (regset, data->regcache, -1, buf, size); |
| 224 | |
| 225 | /* PRSTATUS still needs to be treated specially. */ |
| 226 | if (strcmp (sect_name, ".reg") == 0) |
| 227 | data->note_data = (char *) elfcore_write_prstatus |
| 228 | (data->obfd, data->note_data, data->note_size, data->lwp, |
| 229 | gdb_signal_to_host (data->stop_signal), buf); |
| 230 | else |
| 231 | data->note_data = (char *) elfcore_write_register_note |
| 232 | (data->obfd, data->note_data, data->note_size, |
| 233 | sect_name, buf, size); |
| 234 | xfree (buf); |
| 235 | |
| 236 | if (data->note_data == NULL) |
| 237 | data->abort_iteration = 1; |
| 238 | } |
| 239 | |
| 240 | /* Records the thread's register state for the corefile note |
| 241 | section. */ |
| 242 | |
| 243 | static char * |
| 244 | fbsd_collect_thread_registers (const struct regcache *regcache, |
| 245 | ptid_t ptid, bfd *obfd, |
| 246 | char *note_data, int *note_size, |
| 247 | enum gdb_signal stop_signal) |
| 248 | { |
| 249 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 250 | struct fbsd_collect_regset_section_cb_data data; |
| 251 | |
| 252 | data.regcache = regcache; |
| 253 | data.obfd = obfd; |
| 254 | data.note_data = note_data; |
| 255 | data.note_size = note_size; |
| 256 | data.stop_signal = stop_signal; |
| 257 | data.abort_iteration = 0; |
| 258 | data.lwp = ptid_get_lwp (ptid); |
| 259 | |
| 260 | gdbarch_iterate_over_regset_sections (gdbarch, |
| 261 | fbsd_collect_regset_section_cb, |
| 262 | &data, regcache); |
| 263 | return data.note_data; |
| 264 | } |
| 265 | |
| 266 | struct fbsd_corefile_thread_data |
| 267 | { |
| 268 | struct gdbarch *gdbarch; |
| 269 | bfd *obfd; |
| 270 | char *note_data; |
| 271 | int *note_size; |
| 272 | enum gdb_signal stop_signal; |
| 273 | }; |
| 274 | |
| 275 | /* Records the thread's register state for the corefile note |
| 276 | section. */ |
| 277 | |
| 278 | static void |
| 279 | fbsd_corefile_thread (struct thread_info *info, |
| 280 | struct fbsd_corefile_thread_data *args) |
| 281 | { |
| 282 | struct regcache *regcache; |
| 283 | |
| 284 | regcache = get_thread_arch_regcache (info->ptid, args->gdbarch); |
| 285 | |
| 286 | target_fetch_registers (regcache, -1); |
| 287 | |
| 288 | args->note_data = fbsd_collect_thread_registers |
| 289 | (regcache, info->ptid, args->obfd, args->note_data, |
| 290 | args->note_size, args->stop_signal); |
| 291 | } |
| 292 | |
| 293 | /* Create appropriate note sections for a corefile, returning them in |
| 294 | allocated memory. */ |
| 295 | |
| 296 | static char * |
| 297 | fbsd_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size) |
| 298 | { |
| 299 | struct fbsd_corefile_thread_data thread_args; |
| 300 | char *note_data = NULL; |
| 301 | Elf_Internal_Ehdr *i_ehdrp; |
| 302 | struct thread_info *curr_thr, *signalled_thr, *thr; |
| 303 | |
| 304 | /* Put a "FreeBSD" label in the ELF header. */ |
| 305 | i_ehdrp = elf_elfheader (obfd); |
| 306 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; |
| 307 | |
| 308 | gdb_assert (gdbarch_iterate_over_regset_sections_p (gdbarch)); |
| 309 | |
| 310 | if (get_exec_file (0)) |
| 311 | { |
| 312 | const char *fname = lbasename (get_exec_file (0)); |
| 313 | char *psargs = xstrdup (fname); |
| 314 | |
| 315 | if (get_inferior_args ()) |
| 316 | psargs = reconcat (psargs, psargs, " ", get_inferior_args (), |
| 317 | (char *) NULL); |
| 318 | |
| 319 | note_data = elfcore_write_prpsinfo (obfd, note_data, note_size, |
| 320 | fname, psargs); |
| 321 | } |
| 322 | |
| 323 | /* Thread register information. */ |
| 324 | TRY |
| 325 | { |
| 326 | update_thread_list (); |
| 327 | } |
| 328 | CATCH (e, RETURN_MASK_ERROR) |
| 329 | { |
| 330 | exception_print (gdb_stderr, e); |
| 331 | } |
| 332 | END_CATCH |
| 333 | |
| 334 | /* Like the kernel, prefer dumping the signalled thread first. |
| 335 | "First thread" is what tools use to infer the signalled thread. |
| 336 | In case there's more than one signalled thread, prefer the |
| 337 | current thread, if it is signalled. */ |
| 338 | curr_thr = inferior_thread (); |
| 339 | if (curr_thr->suspend.stop_signal != GDB_SIGNAL_0) |
| 340 | signalled_thr = curr_thr; |
| 341 | else |
| 342 | { |
| 343 | signalled_thr = iterate_over_threads (find_signalled_thread, NULL); |
| 344 | if (signalled_thr == NULL) |
| 345 | signalled_thr = curr_thr; |
| 346 | } |
| 347 | |
| 348 | thread_args.gdbarch = gdbarch; |
| 349 | thread_args.obfd = obfd; |
| 350 | thread_args.note_data = note_data; |
| 351 | thread_args.note_size = note_size; |
| 352 | thread_args.stop_signal = signalled_thr->suspend.stop_signal; |
| 353 | |
| 354 | fbsd_corefile_thread (signalled_thr, &thread_args); |
| 355 | ALL_NON_EXITED_THREADS (thr) |
| 356 | { |
| 357 | if (thr == signalled_thr) |
| 358 | continue; |
| 359 | if (ptid_get_pid (thr->ptid) != ptid_get_pid (inferior_ptid)) |
| 360 | continue; |
| 361 | |
| 362 | fbsd_corefile_thread (thr, &thread_args); |
| 363 | } |
| 364 | |
| 365 | note_data = thread_args.note_data; |
| 366 | |
| 367 | return note_data; |
| 368 | } |
| 369 | |
| 370 | /* Print descriptions of FreeBSD-specific AUXV entries to FILE. */ |
| 371 | |
| 372 | static void |
| 373 | fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file, |
| 374 | CORE_ADDR type, CORE_ADDR val) |
| 375 | { |
| 376 | const char *name; |
| 377 | const char *description; |
| 378 | enum auxv_format format; |
| 379 | |
| 380 | switch (type) |
| 381 | { |
| 382 | #define _TAGNAME(tag) #tag |
| 383 | #define TAGNAME(tag) _TAGNAME(AT_##tag) |
| 384 | #define TAG(tag, text, kind) \ |
| 385 | case AT_FREEBSD_##tag: name = TAGNAME(tag); description = text; format = kind; break |
| 386 | TAG (EXECPATH, _("Executable path"), AUXV_FORMAT_STR); |
| 387 | TAG (CANARY, _("Canary for SSP"), AUXV_FORMAT_HEX); |
| 388 | TAG (CANARYLEN, ("Length of the SSP canary"), AUXV_FORMAT_DEC); |
| 389 | TAG (OSRELDATE, _("OSRELDATE"), AUXV_FORMAT_DEC); |
| 390 | TAG (NCPUS, _("Number of CPUs"), AUXV_FORMAT_DEC); |
| 391 | TAG (PAGESIZES, _("Pagesizes"), AUXV_FORMAT_HEX); |
| 392 | TAG (PAGESIZESLEN, _("Number of pagesizes"), AUXV_FORMAT_DEC); |
| 393 | TAG (TIMEKEEP, _("Pointer to timehands"), AUXV_FORMAT_HEX); |
| 394 | TAG (STACKPROT, _("Initial stack protection"), AUXV_FORMAT_HEX); |
| 395 | TAG (EHDRFLAGS, _("ELF header e_flags"), AUXV_FORMAT_HEX); |
| 396 | TAG (HWCAP, _("Machine-dependent CPU capability hints"), AUXV_FORMAT_HEX); |
| 397 | default: |
| 398 | default_print_auxv_entry (gdbarch, file, type, val); |
| 399 | return; |
| 400 | } |
| 401 | |
| 402 | fprint_auxv_entry (file, name, description, format, type, val); |
| 403 | } |
| 404 | |
| 405 | /* Implement the "get_siginfo_type" gdbarch method. */ |
| 406 | |
| 407 | static struct type * |
| 408 | fbsd_get_siginfo_type (struct gdbarch *gdbarch) |
| 409 | { |
| 410 | struct fbsd_gdbarch_data *fbsd_gdbarch_data; |
| 411 | struct type *int_type, *int32_type, *uint32_type, *long_type, *void_ptr_type; |
| 412 | struct type *uid_type, *pid_type; |
| 413 | struct type *sigval_type, *reason_type; |
| 414 | struct type *siginfo_type; |
| 415 | struct type *type; |
| 416 | |
| 417 | fbsd_gdbarch_data = get_fbsd_gdbarch_data (gdbarch); |
| 418 | if (fbsd_gdbarch_data->siginfo_type != NULL) |
| 419 | return fbsd_gdbarch_data->siginfo_type; |
| 420 | |
| 421 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 422 | 0, "int"); |
| 423 | int32_type = arch_integer_type (gdbarch, 32, 0, "int32_t"); |
| 424 | uint32_type = arch_integer_type (gdbarch, 32, 1, "uint32_t"); |
| 425 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 426 | 0, "long"); |
| 427 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
| 428 | |
| 429 | /* union sigval */ |
| 430 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 431 | TYPE_NAME (sigval_type) = xstrdup ("sigval"); |
| 432 | append_composite_type_field (sigval_type, "sival_int", int_type); |
| 433 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); |
| 434 | |
| 435 | /* __pid_t */ |
| 436 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 437 | TYPE_LENGTH (int32_type) * TARGET_CHAR_BIT, "__pid_t"); |
| 438 | TYPE_TARGET_TYPE (pid_type) = int32_type; |
| 439 | TYPE_TARGET_STUB (pid_type) = 1; |
| 440 | |
| 441 | /* __uid_t */ |
| 442 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 443 | TYPE_LENGTH (uint32_type) * TARGET_CHAR_BIT, |
| 444 | "__uid_t"); |
| 445 | TYPE_TARGET_TYPE (uid_type) = uint32_type; |
| 446 | TYPE_TARGET_STUB (uid_type) = 1; |
| 447 | |
| 448 | /* _reason */ |
| 449 | reason_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 450 | |
| 451 | /* _fault */ |
| 452 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 453 | append_composite_type_field (type, "si_trapno", int_type); |
| 454 | append_composite_type_field (reason_type, "_fault", type); |
| 455 | |
| 456 | /* _timer */ |
| 457 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 458 | append_composite_type_field (type, "si_timerid", int_type); |
| 459 | append_composite_type_field (type, "si_overrun", int_type); |
| 460 | append_composite_type_field (reason_type, "_timer", type); |
| 461 | |
| 462 | /* _mesgq */ |
| 463 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 464 | append_composite_type_field (type, "si_mqd", int_type); |
| 465 | append_composite_type_field (reason_type, "_mesgq", type); |
| 466 | |
| 467 | /* _poll */ |
| 468 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 469 | append_composite_type_field (type, "si_band", long_type); |
| 470 | append_composite_type_field (reason_type, "_poll", type); |
| 471 | |
| 472 | /* __spare__ */ |
| 473 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 474 | append_composite_type_field (type, "__spare1__", long_type); |
| 475 | append_composite_type_field (type, "__spare2__", |
| 476 | init_vector_type (int_type, 7)); |
| 477 | append_composite_type_field (reason_type, "__spare__", type); |
| 478 | |
| 479 | /* struct siginfo */ |
| 480 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 481 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
| 482 | append_composite_type_field (siginfo_type, "si_signo", int_type); |
| 483 | append_composite_type_field (siginfo_type, "si_errno", int_type); |
| 484 | append_composite_type_field (siginfo_type, "si_code", int_type); |
| 485 | append_composite_type_field (siginfo_type, "si_pid", pid_type); |
| 486 | append_composite_type_field (siginfo_type, "si_uid", uid_type); |
| 487 | append_composite_type_field (siginfo_type, "si_status", int_type); |
| 488 | append_composite_type_field (siginfo_type, "si_addr", void_ptr_type); |
| 489 | append_composite_type_field (siginfo_type, "si_value", sigval_type); |
| 490 | append_composite_type_field (siginfo_type, "_reason", reason_type); |
| 491 | |
| 492 | fbsd_gdbarch_data->siginfo_type = siginfo_type; |
| 493 | |
| 494 | return siginfo_type; |
| 495 | } |
| 496 | |
| 497 | /* Implement the "get_syscall_number" gdbarch method. */ |
| 498 | |
| 499 | static LONGEST |
| 500 | fbsd_get_syscall_number (struct gdbarch *gdbarch, |
| 501 | ptid_t ptid) |
| 502 | { |
| 503 | |
| 504 | /* FreeBSD doesn't use gdbarch_get_syscall_number since FreeBSD |
| 505 | native targets fetch the system call number from the |
| 506 | 'pl_syscall_code' member of struct ptrace_lwpinfo in fbsd_wait. |
| 507 | However, system call catching requires this function to be |
| 508 | set. */ |
| 509 | |
| 510 | internal_error (__FILE__, __LINE__, _("fbsd_get_sycall_number called")); |
| 511 | } |
| 512 | |
| 513 | /* To be called from GDB_OSABI_FREEBSD handlers. */ |
| 514 | |
| 515 | void |
| 516 | fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 517 | { |
| 518 | set_gdbarch_core_pid_to_str (gdbarch, fbsd_core_pid_to_str); |
| 519 | set_gdbarch_core_thread_name (gdbarch, fbsd_core_thread_name); |
| 520 | set_gdbarch_core_xfer_siginfo (gdbarch, fbsd_core_xfer_siginfo); |
| 521 | set_gdbarch_make_corefile_notes (gdbarch, fbsd_make_corefile_notes); |
| 522 | set_gdbarch_print_auxv_entry (gdbarch, fbsd_print_auxv_entry); |
| 523 | set_gdbarch_get_siginfo_type (gdbarch, fbsd_get_siginfo_type); |
| 524 | |
| 525 | /* `catch syscall' */ |
| 526 | set_xml_syscall_file_name (gdbarch, "syscalls/freebsd.xml"); |
| 527 | set_gdbarch_get_syscall_number (gdbarch, fbsd_get_syscall_number); |
| 528 | } |
| 529 | |
| 530 | void |
| 531 | _initialize_fbsd_tdep (void) |
| 532 | { |
| 533 | fbsd_gdbarch_data_handle = |
| 534 | gdbarch_data_register_post_init (init_fbsd_gdbarch_data); |
| 535 | } |