| 1 | /* Target-dependent code for FreeBSD, architecture-independent. |
| 2 | |
| 3 | Copyright (C) 2002-2020 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 "objfiles.h" |
| 28 | #include "xml-syscall.h" |
| 29 | #include <sys/socket.h> |
| 30 | #include <arpa/inet.h> |
| 31 | |
| 32 | #include "elf-bfd.h" |
| 33 | #include "fbsd-tdep.h" |
| 34 | |
| 35 | /* This enum is derived from FreeBSD's <sys/signal.h>. */ |
| 36 | |
| 37 | enum |
| 38 | { |
| 39 | FREEBSD_SIGHUP = 1, |
| 40 | FREEBSD_SIGINT = 2, |
| 41 | FREEBSD_SIGQUIT = 3, |
| 42 | FREEBSD_SIGILL = 4, |
| 43 | FREEBSD_SIGTRAP = 5, |
| 44 | FREEBSD_SIGABRT = 6, |
| 45 | FREEBSD_SIGEMT = 7, |
| 46 | FREEBSD_SIGFPE = 8, |
| 47 | FREEBSD_SIGKILL = 9, |
| 48 | FREEBSD_SIGBUS = 10, |
| 49 | FREEBSD_SIGSEGV = 11, |
| 50 | FREEBSD_SIGSYS = 12, |
| 51 | FREEBSD_SIGPIPE = 13, |
| 52 | FREEBSD_SIGALRM = 14, |
| 53 | FREEBSD_SIGTERM = 15, |
| 54 | FREEBSD_SIGURG = 16, |
| 55 | FREEBSD_SIGSTOP = 17, |
| 56 | FREEBSD_SIGTSTP = 18, |
| 57 | FREEBSD_SIGCONT = 19, |
| 58 | FREEBSD_SIGCHLD = 20, |
| 59 | FREEBSD_SIGTTIN = 21, |
| 60 | FREEBSD_SIGTTOU = 22, |
| 61 | FREEBSD_SIGIO = 23, |
| 62 | FREEBSD_SIGXCPU = 24, |
| 63 | FREEBSD_SIGXFSZ = 25, |
| 64 | FREEBSD_SIGVTALRM = 26, |
| 65 | FREEBSD_SIGPROF = 27, |
| 66 | FREEBSD_SIGWINCH = 28, |
| 67 | FREEBSD_SIGINFO = 29, |
| 68 | FREEBSD_SIGUSR1 = 30, |
| 69 | FREEBSD_SIGUSR2 = 31, |
| 70 | FREEBSD_SIGTHR = 32, |
| 71 | FREEBSD_SIGLIBRT = 33, |
| 72 | FREEBSD_SIGRTMIN = 65, |
| 73 | FREEBSD_SIGRTMAX = 126, |
| 74 | }; |
| 75 | |
| 76 | /* FreeBSD kernels 12.0 and later include a copy of the |
| 77 | 'ptrace_lwpinfo' structure returned by the PT_LWPINFO ptrace |
| 78 | operation in an ELF core note (NT_FREEBSD_PTLWPINFO) for each LWP. |
| 79 | The constants below define the offset of field members and flags in |
| 80 | this structure used by methods in this file. Note that the |
| 81 | 'ptrace_lwpinfo' struct in the note is preceded by a 4 byte integer |
| 82 | containing the size of the structure. */ |
| 83 | |
| 84 | #define LWPINFO_OFFSET 0x4 |
| 85 | |
| 86 | /* Offsets in ptrace_lwpinfo. */ |
| 87 | #define LWPINFO_PL_FLAGS 0x8 |
| 88 | #define LWPINFO64_PL_SIGINFO 0x30 |
| 89 | #define LWPINFO32_PL_SIGINFO 0x2c |
| 90 | |
| 91 | /* Flags in pl_flags. */ |
| 92 | #define PL_FLAG_SI 0x20 /* siginfo is valid */ |
| 93 | |
| 94 | /* Sizes of siginfo_t. */ |
| 95 | #define SIZE64_SIGINFO_T 80 |
| 96 | #define SIZE32_SIGINFO_T 64 |
| 97 | |
| 98 | /* Offsets in data structure used in NT_FREEBSD_PROCSTAT_VMMAP core |
| 99 | dump notes. See <sys/user.h> for the definition of struct |
| 100 | kinfo_vmentry. This data structure should have the same layout on |
| 101 | all architectures. |
| 102 | |
| 103 | Note that FreeBSD 7.0 used an older version of this structure |
| 104 | (struct kinfo_vmentry), but the NT_FREEBSD_PROCSTAT_VMMAP core |
| 105 | dump note wasn't introduced until FreeBSD 9.2. As a result, the |
| 106 | core dump note has always used the 7.1 and later structure |
| 107 | format. */ |
| 108 | |
| 109 | #define KVE_STRUCTSIZE 0x0 |
| 110 | #define KVE_START 0x8 |
| 111 | #define KVE_END 0x10 |
| 112 | #define KVE_OFFSET 0x18 |
| 113 | #define KVE_FLAGS 0x2c |
| 114 | #define KVE_PROTECTION 0x38 |
| 115 | #define KVE_PATH 0x88 |
| 116 | |
| 117 | /* Flags in the 'kve_protection' field in struct kinfo_vmentry. These |
| 118 | match the KVME_PROT_* constants in <sys/user.h>. */ |
| 119 | |
| 120 | #define KINFO_VME_PROT_READ 0x00000001 |
| 121 | #define KINFO_VME_PROT_WRITE 0x00000002 |
| 122 | #define KINFO_VME_PROT_EXEC 0x00000004 |
| 123 | |
| 124 | /* Flags in the 'kve_flags' field in struct kinfo_vmentry. These |
| 125 | match the KVME_FLAG_* constants in <sys/user.h>. */ |
| 126 | |
| 127 | #define KINFO_VME_FLAG_COW 0x00000001 |
| 128 | #define KINFO_VME_FLAG_NEEDS_COPY 0x00000002 |
| 129 | #define KINFO_VME_FLAG_NOCOREDUMP 0x00000004 |
| 130 | #define KINFO_VME_FLAG_SUPER 0x00000008 |
| 131 | #define KINFO_VME_FLAG_GROWS_UP 0x00000010 |
| 132 | #define KINFO_VME_FLAG_GROWS_DOWN 0x00000020 |
| 133 | |
| 134 | /* Offsets in data structure used in NT_FREEBSD_PROCSTAT_FILES core |
| 135 | dump notes. See <sys/user.h> for the definition of struct |
| 136 | kinfo_file. This data structure should have the same layout on all |
| 137 | architectures. |
| 138 | |
| 139 | Note that FreeBSD 7.0 used an older version of this structure |
| 140 | (struct kinfo_ofile), but the NT_FREEBSD_PROCSTAT_FILES core dump |
| 141 | note wasn't introduced until FreeBSD 9.2. As a result, the core |
| 142 | dump note has always used the 7.1 and later structure format. */ |
| 143 | |
| 144 | #define KF_STRUCTSIZE 0x0 |
| 145 | #define KF_TYPE 0x4 |
| 146 | #define KF_FD 0x8 |
| 147 | #define KF_FLAGS 0x10 |
| 148 | #define KF_OFFSET 0x18 |
| 149 | #define KF_VNODE_TYPE 0x20 |
| 150 | #define KF_SOCK_DOMAIN 0x24 |
| 151 | #define KF_SOCK_TYPE 0x28 |
| 152 | #define KF_SOCK_PROTOCOL 0x2c |
| 153 | #define KF_SA_LOCAL 0x30 |
| 154 | #define KF_SA_PEER 0xb0 |
| 155 | #define KF_PATH 0x170 |
| 156 | |
| 157 | /* Constants for the 'kf_type' field in struct kinfo_file. These |
| 158 | match the KF_TYPE_* constants in <sys/user.h>. */ |
| 159 | |
| 160 | #define KINFO_FILE_TYPE_VNODE 1 |
| 161 | #define KINFO_FILE_TYPE_SOCKET 2 |
| 162 | #define KINFO_FILE_TYPE_PIPE 3 |
| 163 | #define KINFO_FILE_TYPE_FIFO 4 |
| 164 | #define KINFO_FILE_TYPE_KQUEUE 5 |
| 165 | #define KINFO_FILE_TYPE_CRYPTO 6 |
| 166 | #define KINFO_FILE_TYPE_MQUEUE 7 |
| 167 | #define KINFO_FILE_TYPE_SHM 8 |
| 168 | #define KINFO_FILE_TYPE_SEM 9 |
| 169 | #define KINFO_FILE_TYPE_PTS 10 |
| 170 | #define KINFO_FILE_TYPE_PROCDESC 11 |
| 171 | |
| 172 | /* Special values for the 'kf_fd' field in struct kinfo_file. These |
| 173 | match the KF_FD_TYPE_* constants in <sys/user.h>. */ |
| 174 | |
| 175 | #define KINFO_FILE_FD_TYPE_CWD -1 |
| 176 | #define KINFO_FILE_FD_TYPE_ROOT -2 |
| 177 | #define KINFO_FILE_FD_TYPE_JAIL -3 |
| 178 | #define KINFO_FILE_FD_TYPE_TRACE -4 |
| 179 | #define KINFO_FILE_FD_TYPE_TEXT -5 |
| 180 | #define KINFO_FILE_FD_TYPE_CTTY -6 |
| 181 | |
| 182 | /* Flags in the 'kf_flags' field in struct kinfo_file. These match |
| 183 | the KF_FLAG_* constants in <sys/user.h>. */ |
| 184 | |
| 185 | #define KINFO_FILE_FLAG_READ 0x00000001 |
| 186 | #define KINFO_FILE_FLAG_WRITE 0x00000002 |
| 187 | #define KINFO_FILE_FLAG_APPEND 0x00000004 |
| 188 | #define KINFO_FILE_FLAG_ASYNC 0x00000008 |
| 189 | #define KINFO_FILE_FLAG_FSYNC 0x00000010 |
| 190 | #define KINFO_FILE_FLAG_NONBLOCK 0x00000020 |
| 191 | #define KINFO_FILE_FLAG_DIRECT 0x00000040 |
| 192 | #define KINFO_FILE_FLAG_HASLOCK 0x00000080 |
| 193 | #define KINFO_FILE_FLAG_EXEC 0x00004000 |
| 194 | |
| 195 | /* Constants for the 'kf_vnode_type' field in struct kinfo_file. |
| 196 | These match the KF_VTYPE_* constants in <sys/user.h>. */ |
| 197 | |
| 198 | #define KINFO_FILE_VTYPE_VREG 1 |
| 199 | #define KINFO_FILE_VTYPE_VDIR 2 |
| 200 | #define KINFO_FILE_VTYPE_VCHR 4 |
| 201 | #define KINFO_FILE_VTYPE_VLNK 5 |
| 202 | #define KINFO_FILE_VTYPE_VSOCK 6 |
| 203 | #define KINFO_FILE_VTYPE_VFIFO 7 |
| 204 | |
| 205 | /* Constants for socket address families. These match AF_* constants |
| 206 | in <sys/socket.h>. */ |
| 207 | |
| 208 | #define FBSD_AF_UNIX 1 |
| 209 | #define FBSD_AF_INET 2 |
| 210 | #define FBSD_AF_INET6 28 |
| 211 | |
| 212 | /* Constants for socket types. These match SOCK_* constants in |
| 213 | <sys/socket.h>. */ |
| 214 | |
| 215 | #define FBSD_SOCK_STREAM 1 |
| 216 | #define FBSD_SOCK_DGRAM 2 |
| 217 | #define FBSD_SOCK_SEQPACKET 5 |
| 218 | |
| 219 | /* Constants for IP protocols. These match IPPROTO_* constants in |
| 220 | <netinet/in.h>. */ |
| 221 | |
| 222 | #define FBSD_IPPROTO_ICMP 1 |
| 223 | #define FBSD_IPPROTO_TCP 6 |
| 224 | #define FBSD_IPPROTO_UDP 17 |
| 225 | #define FBSD_IPPROTO_SCTP 132 |
| 226 | |
| 227 | /* Socket address structures. These have the same layout on all |
| 228 | FreeBSD architectures. In addition, multibyte fields such as IP |
| 229 | addresses are always stored in network byte order. */ |
| 230 | |
| 231 | struct fbsd_sockaddr_in |
| 232 | { |
| 233 | uint8_t sin_len; |
| 234 | uint8_t sin_family; |
| 235 | uint8_t sin_port[2]; |
| 236 | uint8_t sin_addr[4]; |
| 237 | char sin_zero[8]; |
| 238 | }; |
| 239 | |
| 240 | struct fbsd_sockaddr_in6 |
| 241 | { |
| 242 | uint8_t sin6_len; |
| 243 | uint8_t sin6_family; |
| 244 | uint8_t sin6_port[2]; |
| 245 | uint32_t sin6_flowinfo; |
| 246 | uint8_t sin6_addr[16]; |
| 247 | uint32_t sin6_scope_id; |
| 248 | }; |
| 249 | |
| 250 | struct fbsd_sockaddr_un |
| 251 | { |
| 252 | uint8_t sun_len; |
| 253 | uint8_t sun_family; |
| 254 | char sun_path[104]; |
| 255 | }; |
| 256 | |
| 257 | /* Number of 32-bit words in a signal set. This matches _SIG_WORDS in |
| 258 | <sys/_sigset.h> and is the same value on all architectures. */ |
| 259 | |
| 260 | #define SIG_WORDS 4 |
| 261 | |
| 262 | /* Offsets in data structure used in NT_FREEBSD_PROCSTAT_PROC core |
| 263 | dump notes. See <sys/user.h> for the definition of struct |
| 264 | kinfo_proc. This data structure has different layouts on different |
| 265 | architectures mostly due to ILP32 vs LP64. However, FreeBSD/i386 |
| 266 | uses a 32-bit time_t while all other architectures use a 64-bit |
| 267 | time_t. |
| 268 | |
| 269 | The core dump note actually contains one kinfo_proc structure for |
| 270 | each thread, but all of the process-wide data can be obtained from |
| 271 | the first structure. One result of this note's format is that some |
| 272 | of the process-wide status available in the native target method |
| 273 | from the kern.proc.pid.<pid> sysctl such as ki_stat and ki_siglist |
| 274 | is not available from a core dump. Instead, the per-thread data |
| 275 | structures contain the value of these fields for individual |
| 276 | threads. */ |
| 277 | |
| 278 | struct kinfo_proc_layout |
| 279 | { |
| 280 | /* Offsets of struct kinfo_proc members. */ |
| 281 | int ki_layout; |
| 282 | int ki_pid; |
| 283 | int ki_ppid; |
| 284 | int ki_pgid; |
| 285 | int ki_tpgid; |
| 286 | int ki_sid; |
| 287 | int ki_tdev_freebsd11; |
| 288 | int ki_sigignore; |
| 289 | int ki_sigcatch; |
| 290 | int ki_uid; |
| 291 | int ki_ruid; |
| 292 | int ki_svuid; |
| 293 | int ki_rgid; |
| 294 | int ki_svgid; |
| 295 | int ki_ngroups; |
| 296 | int ki_groups; |
| 297 | int ki_size; |
| 298 | int ki_rssize; |
| 299 | int ki_tsize; |
| 300 | int ki_dsize; |
| 301 | int ki_ssize; |
| 302 | int ki_start; |
| 303 | int ki_nice; |
| 304 | int ki_comm; |
| 305 | int ki_tdev; |
| 306 | int ki_rusage; |
| 307 | int ki_rusage_ch; |
| 308 | |
| 309 | /* Offsets of struct rusage members. */ |
| 310 | int ru_utime; |
| 311 | int ru_stime; |
| 312 | int ru_maxrss; |
| 313 | int ru_minflt; |
| 314 | int ru_majflt; |
| 315 | }; |
| 316 | |
| 317 | const struct kinfo_proc_layout kinfo_proc_layout_32 = |
| 318 | { |
| 319 | .ki_layout = 0x4, |
| 320 | .ki_pid = 0x28, |
| 321 | .ki_ppid = 0x2c, |
| 322 | .ki_pgid = 0x30, |
| 323 | .ki_tpgid = 0x34, |
| 324 | .ki_sid = 0x38, |
| 325 | .ki_tdev_freebsd11 = 0x44, |
| 326 | .ki_sigignore = 0x68, |
| 327 | .ki_sigcatch = 0x78, |
| 328 | .ki_uid = 0x88, |
| 329 | .ki_ruid = 0x8c, |
| 330 | .ki_svuid = 0x90, |
| 331 | .ki_rgid = 0x94, |
| 332 | .ki_svgid = 0x98, |
| 333 | .ki_ngroups = 0x9c, |
| 334 | .ki_groups = 0xa0, |
| 335 | .ki_size = 0xe0, |
| 336 | .ki_rssize = 0xe4, |
| 337 | .ki_tsize = 0xec, |
| 338 | .ki_dsize = 0xf0, |
| 339 | .ki_ssize = 0xf4, |
| 340 | .ki_start = 0x118, |
| 341 | .ki_nice = 0x145, |
| 342 | .ki_comm = 0x17f, |
| 343 | .ki_tdev = 0x1f0, |
| 344 | .ki_rusage = 0x220, |
| 345 | .ki_rusage_ch = 0x278, |
| 346 | |
| 347 | .ru_utime = 0x0, |
| 348 | .ru_stime = 0x10, |
| 349 | .ru_maxrss = 0x20, |
| 350 | .ru_minflt = 0x30, |
| 351 | .ru_majflt = 0x34, |
| 352 | }; |
| 353 | |
| 354 | const struct kinfo_proc_layout kinfo_proc_layout_i386 = |
| 355 | { |
| 356 | .ki_layout = 0x4, |
| 357 | .ki_pid = 0x28, |
| 358 | .ki_ppid = 0x2c, |
| 359 | .ki_pgid = 0x30, |
| 360 | .ki_tpgid = 0x34, |
| 361 | .ki_sid = 0x38, |
| 362 | .ki_tdev_freebsd11 = 0x44, |
| 363 | .ki_sigignore = 0x68, |
| 364 | .ki_sigcatch = 0x78, |
| 365 | .ki_uid = 0x88, |
| 366 | .ki_ruid = 0x8c, |
| 367 | .ki_svuid = 0x90, |
| 368 | .ki_rgid = 0x94, |
| 369 | .ki_svgid = 0x98, |
| 370 | .ki_ngroups = 0x9c, |
| 371 | .ki_groups = 0xa0, |
| 372 | .ki_size = 0xe0, |
| 373 | .ki_rssize = 0xe4, |
| 374 | .ki_tsize = 0xec, |
| 375 | .ki_dsize = 0xf0, |
| 376 | .ki_ssize = 0xf4, |
| 377 | .ki_start = 0x118, |
| 378 | .ki_nice = 0x135, |
| 379 | .ki_comm = 0x16f, |
| 380 | .ki_tdev = 0x1e0, |
| 381 | .ki_rusage = 0x210, |
| 382 | .ki_rusage_ch = 0x258, |
| 383 | |
| 384 | .ru_utime = 0x0, |
| 385 | .ru_stime = 0x8, |
| 386 | .ru_maxrss = 0x10, |
| 387 | .ru_minflt = 0x20, |
| 388 | .ru_majflt = 0x24, |
| 389 | }; |
| 390 | |
| 391 | const struct kinfo_proc_layout kinfo_proc_layout_64 = |
| 392 | { |
| 393 | .ki_layout = 0x4, |
| 394 | .ki_pid = 0x48, |
| 395 | .ki_ppid = 0x4c, |
| 396 | .ki_pgid = 0x50, |
| 397 | .ki_tpgid = 0x54, |
| 398 | .ki_sid = 0x58, |
| 399 | .ki_tdev_freebsd11 = 0x64, |
| 400 | .ki_sigignore = 0x88, |
| 401 | .ki_sigcatch = 0x98, |
| 402 | .ki_uid = 0xa8, |
| 403 | .ki_ruid = 0xac, |
| 404 | .ki_svuid = 0xb0, |
| 405 | .ki_rgid = 0xb4, |
| 406 | .ki_svgid = 0xb8, |
| 407 | .ki_ngroups = 0xbc, |
| 408 | .ki_groups = 0xc0, |
| 409 | .ki_size = 0x100, |
| 410 | .ki_rssize = 0x108, |
| 411 | .ki_tsize = 0x118, |
| 412 | .ki_dsize = 0x120, |
| 413 | .ki_ssize = 0x128, |
| 414 | .ki_start = 0x150, |
| 415 | .ki_nice = 0x185, |
| 416 | .ki_comm = 0x1bf, |
| 417 | .ki_tdev = 0x230, |
| 418 | .ki_rusage = 0x260, |
| 419 | .ki_rusage_ch = 0x2f0, |
| 420 | |
| 421 | .ru_utime = 0x0, |
| 422 | .ru_stime = 0x10, |
| 423 | .ru_maxrss = 0x20, |
| 424 | .ru_minflt = 0x40, |
| 425 | .ru_majflt = 0x48, |
| 426 | }; |
| 427 | |
| 428 | static struct gdbarch_data *fbsd_gdbarch_data_handle; |
| 429 | |
| 430 | struct fbsd_gdbarch_data |
| 431 | { |
| 432 | struct type *siginfo_type; |
| 433 | }; |
| 434 | |
| 435 | static void * |
| 436 | init_fbsd_gdbarch_data (struct gdbarch *gdbarch) |
| 437 | { |
| 438 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct fbsd_gdbarch_data); |
| 439 | } |
| 440 | |
| 441 | static struct fbsd_gdbarch_data * |
| 442 | get_fbsd_gdbarch_data (struct gdbarch *gdbarch) |
| 443 | { |
| 444 | return ((struct fbsd_gdbarch_data *) |
| 445 | gdbarch_data (gdbarch, fbsd_gdbarch_data_handle)); |
| 446 | } |
| 447 | |
| 448 | struct fbsd_pspace_data |
| 449 | { |
| 450 | /* Offsets in the runtime linker's 'Obj_Entry' structure. */ |
| 451 | LONGEST off_linkmap = 0; |
| 452 | LONGEST off_tlsindex = 0; |
| 453 | bool rtld_offsets_valid = false; |
| 454 | }; |
| 455 | |
| 456 | /* Per-program-space data for FreeBSD architectures. */ |
| 457 | static const struct program_space_key<fbsd_pspace_data> |
| 458 | fbsd_pspace_data_handle; |
| 459 | |
| 460 | static struct fbsd_pspace_data * |
| 461 | get_fbsd_pspace_data (struct program_space *pspace) |
| 462 | { |
| 463 | struct fbsd_pspace_data *data; |
| 464 | |
| 465 | data = fbsd_pspace_data_handle.get (pspace); |
| 466 | if (data == NULL) |
| 467 | data = fbsd_pspace_data_handle.emplace (pspace); |
| 468 | |
| 469 | return data; |
| 470 | } |
| 471 | |
| 472 | /* This is how we want PTIDs from core files to be printed. */ |
| 473 | |
| 474 | static std::string |
| 475 | fbsd_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) |
| 476 | { |
| 477 | if (ptid.lwp () != 0) |
| 478 | return string_printf ("LWP %ld", ptid.lwp ()); |
| 479 | |
| 480 | return normal_pid_to_str (ptid); |
| 481 | } |
| 482 | |
| 483 | /* Extract the name assigned to a thread from a core. Returns the |
| 484 | string in a static buffer. */ |
| 485 | |
| 486 | static const char * |
| 487 | fbsd_core_thread_name (struct gdbarch *gdbarch, struct thread_info *thr) |
| 488 | { |
| 489 | static char buf[80]; |
| 490 | struct bfd_section *section; |
| 491 | bfd_size_type size; |
| 492 | |
| 493 | if (thr->ptid.lwp () != 0) |
| 494 | { |
| 495 | /* FreeBSD includes a NT_FREEBSD_THRMISC note for each thread |
| 496 | whose contents are defined by a "struct thrmisc" declared in |
| 497 | <sys/procfs.h> on FreeBSD. The per-thread name is stored as |
| 498 | a null-terminated string as the first member of the |
| 499 | structure. Rather than define the full structure here, just |
| 500 | extract the null-terminated name from the start of the |
| 501 | note. */ |
| 502 | thread_section_name section_name (".thrmisc", thr->ptid); |
| 503 | |
| 504 | section = bfd_get_section_by_name (core_bfd, section_name.c_str ()); |
| 505 | if (section != NULL && bfd_section_size (section) > 0) |
| 506 | { |
| 507 | /* Truncate the name if it is longer than "buf". */ |
| 508 | size = bfd_section_size (section); |
| 509 | if (size > sizeof buf - 1) |
| 510 | size = sizeof buf - 1; |
| 511 | if (bfd_get_section_contents (core_bfd, section, buf, (file_ptr) 0, |
| 512 | size) |
| 513 | && buf[0] != '\0') |
| 514 | { |
| 515 | buf[size] = '\0'; |
| 516 | |
| 517 | /* Note that each thread will report the process command |
| 518 | as its thread name instead of an empty name if a name |
| 519 | has not been set explicitly. Return a NULL name in |
| 520 | that case. */ |
| 521 | if (strcmp (buf, elf_tdata (core_bfd)->core->program) != 0) |
| 522 | return buf; |
| 523 | } |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | return NULL; |
| 528 | } |
| 529 | |
| 530 | /* Implement the "core_xfer_siginfo" gdbarch method. */ |
| 531 | |
| 532 | static LONGEST |
| 533 | fbsd_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf, |
| 534 | ULONGEST offset, ULONGEST len) |
| 535 | { |
| 536 | size_t siginfo_size; |
| 537 | |
| 538 | if (gdbarch_long_bit (gdbarch) == 32) |
| 539 | siginfo_size = SIZE32_SIGINFO_T; |
| 540 | else |
| 541 | siginfo_size = SIZE64_SIGINFO_T; |
| 542 | if (offset > siginfo_size) |
| 543 | return -1; |
| 544 | |
| 545 | thread_section_name section_name (".note.freebsdcore.lwpinfo", inferior_ptid); |
| 546 | asection *section = bfd_get_section_by_name (core_bfd, section_name.c_str ()); |
| 547 | if (section == NULL) |
| 548 | return -1; |
| 549 | |
| 550 | gdb_byte buf[4]; |
| 551 | if (!bfd_get_section_contents (core_bfd, section, buf, |
| 552 | LWPINFO_OFFSET + LWPINFO_PL_FLAGS, 4)) |
| 553 | return -1; |
| 554 | |
| 555 | int pl_flags = extract_signed_integer (buf, 4, gdbarch_byte_order (gdbarch)); |
| 556 | if (!(pl_flags & PL_FLAG_SI)) |
| 557 | return -1; |
| 558 | |
| 559 | if (offset + len > siginfo_size) |
| 560 | len = siginfo_size - offset; |
| 561 | |
| 562 | ULONGEST siginfo_offset; |
| 563 | if (gdbarch_long_bit (gdbarch) == 32) |
| 564 | siginfo_offset = LWPINFO_OFFSET + LWPINFO32_PL_SIGINFO; |
| 565 | else |
| 566 | siginfo_offset = LWPINFO_OFFSET + LWPINFO64_PL_SIGINFO; |
| 567 | |
| 568 | if (!bfd_get_section_contents (core_bfd, section, readbuf, |
| 569 | siginfo_offset + offset, len)) |
| 570 | return -1; |
| 571 | |
| 572 | return len; |
| 573 | } |
| 574 | |
| 575 | static int |
| 576 | find_signalled_thread (struct thread_info *info, void *data) |
| 577 | { |
| 578 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
| 579 | && info->ptid.pid () == inferior_ptid.pid ()) |
| 580 | return 1; |
| 581 | |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | /* Structure for passing information from |
| 586 | fbsd_collect_thread_registers via an iterator to |
| 587 | fbsd_collect_regset_section_cb. */ |
| 588 | |
| 589 | struct fbsd_collect_regset_section_cb_data |
| 590 | { |
| 591 | const struct regcache *regcache; |
| 592 | bfd *obfd; |
| 593 | char *note_data; |
| 594 | int *note_size; |
| 595 | unsigned long lwp; |
| 596 | enum gdb_signal stop_signal; |
| 597 | int abort_iteration; |
| 598 | }; |
| 599 | |
| 600 | static void |
| 601 | fbsd_collect_regset_section_cb (const char *sect_name, int supply_size, |
| 602 | int collect_size, const struct regset *regset, |
| 603 | const char *human_name, void *cb_data) |
| 604 | { |
| 605 | char *buf; |
| 606 | struct fbsd_collect_regset_section_cb_data *data |
| 607 | = (struct fbsd_collect_regset_section_cb_data *) cb_data; |
| 608 | |
| 609 | if (data->abort_iteration) |
| 610 | return; |
| 611 | |
| 612 | gdb_assert (regset->collect_regset); |
| 613 | |
| 614 | buf = (char *) xmalloc (collect_size); |
| 615 | regset->collect_regset (regset, data->regcache, -1, buf, collect_size); |
| 616 | |
| 617 | /* PRSTATUS still needs to be treated specially. */ |
| 618 | if (strcmp (sect_name, ".reg") == 0) |
| 619 | data->note_data = (char *) elfcore_write_prstatus |
| 620 | (data->obfd, data->note_data, data->note_size, data->lwp, |
| 621 | gdb_signal_to_host (data->stop_signal), buf); |
| 622 | else |
| 623 | data->note_data = (char *) elfcore_write_register_note |
| 624 | (data->obfd, data->note_data, data->note_size, |
| 625 | sect_name, buf, collect_size); |
| 626 | xfree (buf); |
| 627 | |
| 628 | if (data->note_data == NULL) |
| 629 | data->abort_iteration = 1; |
| 630 | } |
| 631 | |
| 632 | /* Records the thread's register state for the corefile note |
| 633 | section. */ |
| 634 | |
| 635 | static char * |
| 636 | fbsd_collect_thread_registers (const struct regcache *regcache, |
| 637 | ptid_t ptid, bfd *obfd, |
| 638 | char *note_data, int *note_size, |
| 639 | enum gdb_signal stop_signal) |
| 640 | { |
| 641 | struct gdbarch *gdbarch = regcache->arch (); |
| 642 | struct fbsd_collect_regset_section_cb_data data; |
| 643 | |
| 644 | data.regcache = regcache; |
| 645 | data.obfd = obfd; |
| 646 | data.note_data = note_data; |
| 647 | data.note_size = note_size; |
| 648 | data.stop_signal = stop_signal; |
| 649 | data.abort_iteration = 0; |
| 650 | data.lwp = ptid.lwp (); |
| 651 | |
| 652 | gdbarch_iterate_over_regset_sections (gdbarch, |
| 653 | fbsd_collect_regset_section_cb, |
| 654 | &data, regcache); |
| 655 | return data.note_data; |
| 656 | } |
| 657 | |
| 658 | struct fbsd_corefile_thread_data |
| 659 | { |
| 660 | struct gdbarch *gdbarch; |
| 661 | bfd *obfd; |
| 662 | char *note_data; |
| 663 | int *note_size; |
| 664 | enum gdb_signal stop_signal; |
| 665 | }; |
| 666 | |
| 667 | /* Records the thread's register state for the corefile note |
| 668 | section. */ |
| 669 | |
| 670 | static void |
| 671 | fbsd_corefile_thread (struct thread_info *info, |
| 672 | struct fbsd_corefile_thread_data *args) |
| 673 | { |
| 674 | struct regcache *regcache; |
| 675 | |
| 676 | regcache = get_thread_arch_regcache (info->inf->process_target (), |
| 677 | info->ptid, args->gdbarch); |
| 678 | |
| 679 | target_fetch_registers (regcache, -1); |
| 680 | |
| 681 | args->note_data = fbsd_collect_thread_registers |
| 682 | (regcache, info->ptid, args->obfd, args->note_data, |
| 683 | args->note_size, args->stop_signal); |
| 684 | } |
| 685 | |
| 686 | /* Return a byte_vector containing the contents of a core dump note |
| 687 | for the target object of type OBJECT. If STRUCTSIZE is non-zero, |
| 688 | the data is prefixed with a 32-bit integer size to match the format |
| 689 | used in FreeBSD NT_PROCSTAT_* notes. */ |
| 690 | |
| 691 | static gdb::optional<gdb::byte_vector> |
| 692 | fbsd_make_note_desc (enum target_object object, uint32_t structsize) |
| 693 | { |
| 694 | gdb::optional<gdb::byte_vector> buf = |
| 695 | target_read_alloc (current_top_target (), object, NULL); |
| 696 | if (!buf || buf->empty ()) |
| 697 | return {}; |
| 698 | |
| 699 | if (structsize == 0) |
| 700 | return buf; |
| 701 | |
| 702 | gdb::byte_vector desc (sizeof (structsize) + buf->size ()); |
| 703 | memcpy (desc.data (), &structsize, sizeof (structsize)); |
| 704 | memcpy (desc.data () + sizeof (structsize), buf->data (), buf->size ()); |
| 705 | return desc; |
| 706 | } |
| 707 | |
| 708 | /* Create appropriate note sections for a corefile, returning them in |
| 709 | allocated memory. */ |
| 710 | |
| 711 | static char * |
| 712 | fbsd_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size) |
| 713 | { |
| 714 | struct fbsd_corefile_thread_data thread_args; |
| 715 | char *note_data = NULL; |
| 716 | Elf_Internal_Ehdr *i_ehdrp; |
| 717 | struct thread_info *curr_thr, *signalled_thr; |
| 718 | |
| 719 | /* Put a "FreeBSD" label in the ELF header. */ |
| 720 | i_ehdrp = elf_elfheader (obfd); |
| 721 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; |
| 722 | |
| 723 | gdb_assert (gdbarch_iterate_over_regset_sections_p (gdbarch)); |
| 724 | |
| 725 | if (get_exec_file (0)) |
| 726 | { |
| 727 | const char *fname = lbasename (get_exec_file (0)); |
| 728 | std::string psargs = fname; |
| 729 | |
| 730 | const char *infargs = get_inferior_args (); |
| 731 | if (infargs != NULL) |
| 732 | psargs = psargs + " " + infargs; |
| 733 | |
| 734 | note_data = elfcore_write_prpsinfo (obfd, note_data, note_size, |
| 735 | fname, psargs.c_str ()); |
| 736 | } |
| 737 | |
| 738 | /* Thread register information. */ |
| 739 | try |
| 740 | { |
| 741 | update_thread_list (); |
| 742 | } |
| 743 | catch (const gdb_exception_error &e) |
| 744 | { |
| 745 | exception_print (gdb_stderr, e); |
| 746 | } |
| 747 | |
| 748 | /* Like the kernel, prefer dumping the signalled thread first. |
| 749 | "First thread" is what tools use to infer the signalled thread. |
| 750 | In case there's more than one signalled thread, prefer the |
| 751 | current thread, if it is signalled. */ |
| 752 | curr_thr = inferior_thread (); |
| 753 | if (curr_thr->suspend.stop_signal != GDB_SIGNAL_0) |
| 754 | signalled_thr = curr_thr; |
| 755 | else |
| 756 | { |
| 757 | signalled_thr = iterate_over_threads (find_signalled_thread, NULL); |
| 758 | if (signalled_thr == NULL) |
| 759 | signalled_thr = curr_thr; |
| 760 | } |
| 761 | |
| 762 | thread_args.gdbarch = gdbarch; |
| 763 | thread_args.obfd = obfd; |
| 764 | thread_args.note_data = note_data; |
| 765 | thread_args.note_size = note_size; |
| 766 | thread_args.stop_signal = signalled_thr->suspend.stop_signal; |
| 767 | |
| 768 | fbsd_corefile_thread (signalled_thr, &thread_args); |
| 769 | for (thread_info *thr : current_inferior ()->non_exited_threads ()) |
| 770 | { |
| 771 | if (thr == signalled_thr) |
| 772 | continue; |
| 773 | |
| 774 | fbsd_corefile_thread (thr, &thread_args); |
| 775 | } |
| 776 | |
| 777 | note_data = thread_args.note_data; |
| 778 | |
| 779 | /* Auxiliary vector. */ |
| 780 | uint32_t structsize = gdbarch_ptr_bit (gdbarch) / 4; /* Elf_Auxinfo */ |
| 781 | gdb::optional<gdb::byte_vector> note_desc = |
| 782 | fbsd_make_note_desc (TARGET_OBJECT_AUXV, structsize); |
| 783 | if (note_desc && !note_desc->empty ()) |
| 784 | { |
| 785 | note_data = elfcore_write_note (obfd, note_data, note_size, "FreeBSD", |
| 786 | NT_FREEBSD_PROCSTAT_AUXV, |
| 787 | note_desc->data (), note_desc->size ()); |
| 788 | if (!note_data) |
| 789 | return NULL; |
| 790 | } |
| 791 | |
| 792 | /* Virtual memory mappings. */ |
| 793 | note_desc = fbsd_make_note_desc (TARGET_OBJECT_FREEBSD_VMMAP, 0); |
| 794 | if (note_desc && !note_desc->empty ()) |
| 795 | { |
| 796 | note_data = elfcore_write_note (obfd, note_data, note_size, "FreeBSD", |
| 797 | NT_FREEBSD_PROCSTAT_VMMAP, |
| 798 | note_desc->data (), note_desc->size ()); |
| 799 | if (!note_data) |
| 800 | return NULL; |
| 801 | } |
| 802 | |
| 803 | note_desc = fbsd_make_note_desc (TARGET_OBJECT_FREEBSD_PS_STRINGS, 0); |
| 804 | if (note_desc && !note_desc->empty ()) |
| 805 | { |
| 806 | note_data = elfcore_write_note (obfd, note_data, note_size, "FreeBSD", |
| 807 | NT_FREEBSD_PROCSTAT_PSSTRINGS, |
| 808 | note_desc->data (), note_desc->size ()); |
| 809 | if (!note_data) |
| 810 | return NULL; |
| 811 | } |
| 812 | |
| 813 | return note_data; |
| 814 | } |
| 815 | |
| 816 | /* Helper function to generate the file descriptor description for a |
| 817 | single open file in 'info proc files'. */ |
| 818 | |
| 819 | static const char * |
| 820 | fbsd_file_fd (int kf_fd) |
| 821 | { |
| 822 | switch (kf_fd) |
| 823 | { |
| 824 | case KINFO_FILE_FD_TYPE_CWD: |
| 825 | return "cwd"; |
| 826 | case KINFO_FILE_FD_TYPE_ROOT: |
| 827 | return "root"; |
| 828 | case KINFO_FILE_FD_TYPE_JAIL: |
| 829 | return "jail"; |
| 830 | case KINFO_FILE_FD_TYPE_TRACE: |
| 831 | return "trace"; |
| 832 | case KINFO_FILE_FD_TYPE_TEXT: |
| 833 | return "text"; |
| 834 | case KINFO_FILE_FD_TYPE_CTTY: |
| 835 | return "ctty"; |
| 836 | default: |
| 837 | return int_string (kf_fd, 10, 1, 0, 0); |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | /* Helper function to generate the file type for a single open file in |
| 842 | 'info proc files'. */ |
| 843 | |
| 844 | static const char * |
| 845 | fbsd_file_type (int kf_type, int kf_vnode_type) |
| 846 | { |
| 847 | switch (kf_type) |
| 848 | { |
| 849 | case KINFO_FILE_TYPE_VNODE: |
| 850 | switch (kf_vnode_type) |
| 851 | { |
| 852 | case KINFO_FILE_VTYPE_VREG: |
| 853 | return "file"; |
| 854 | case KINFO_FILE_VTYPE_VDIR: |
| 855 | return "dir"; |
| 856 | case KINFO_FILE_VTYPE_VCHR: |
| 857 | return "chr"; |
| 858 | case KINFO_FILE_VTYPE_VLNK: |
| 859 | return "link"; |
| 860 | case KINFO_FILE_VTYPE_VSOCK: |
| 861 | return "socket"; |
| 862 | case KINFO_FILE_VTYPE_VFIFO: |
| 863 | return "fifo"; |
| 864 | default: |
| 865 | { |
| 866 | char *str = get_print_cell (); |
| 867 | |
| 868 | xsnprintf (str, PRINT_CELL_SIZE, "vn:%d", kf_vnode_type); |
| 869 | return str; |
| 870 | } |
| 871 | } |
| 872 | case KINFO_FILE_TYPE_SOCKET: |
| 873 | return "socket"; |
| 874 | case KINFO_FILE_TYPE_PIPE: |
| 875 | return "pipe"; |
| 876 | case KINFO_FILE_TYPE_FIFO: |
| 877 | return "fifo"; |
| 878 | case KINFO_FILE_TYPE_KQUEUE: |
| 879 | return "kqueue"; |
| 880 | case KINFO_FILE_TYPE_CRYPTO: |
| 881 | return "crypto"; |
| 882 | case KINFO_FILE_TYPE_MQUEUE: |
| 883 | return "mqueue"; |
| 884 | case KINFO_FILE_TYPE_SHM: |
| 885 | return "shm"; |
| 886 | case KINFO_FILE_TYPE_SEM: |
| 887 | return "sem"; |
| 888 | case KINFO_FILE_TYPE_PTS: |
| 889 | return "pts"; |
| 890 | case KINFO_FILE_TYPE_PROCDESC: |
| 891 | return "proc"; |
| 892 | default: |
| 893 | return int_string (kf_type, 10, 1, 0, 0); |
| 894 | } |
| 895 | } |
| 896 | |
| 897 | /* Helper function to generate the file flags for a single open file in |
| 898 | 'info proc files'. */ |
| 899 | |
| 900 | static const char * |
| 901 | fbsd_file_flags (int kf_flags) |
| 902 | { |
| 903 | static char file_flags[10]; |
| 904 | |
| 905 | file_flags[0] = (kf_flags & KINFO_FILE_FLAG_READ) ? 'r' : '-'; |
| 906 | file_flags[1] = (kf_flags & KINFO_FILE_FLAG_WRITE) ? 'w' : '-'; |
| 907 | file_flags[2] = (kf_flags & KINFO_FILE_FLAG_EXEC) ? 'x' : '-'; |
| 908 | file_flags[3] = (kf_flags & KINFO_FILE_FLAG_APPEND) ? 'a' : '-'; |
| 909 | file_flags[4] = (kf_flags & KINFO_FILE_FLAG_ASYNC) ? 's' : '-'; |
| 910 | file_flags[5] = (kf_flags & KINFO_FILE_FLAG_FSYNC) ? 'f' : '-'; |
| 911 | file_flags[6] = (kf_flags & KINFO_FILE_FLAG_NONBLOCK) ? 'n' : '-'; |
| 912 | file_flags[7] = (kf_flags & KINFO_FILE_FLAG_DIRECT) ? 'd' : '-'; |
| 913 | file_flags[8] = (kf_flags & KINFO_FILE_FLAG_HASLOCK) ? 'l' : '-'; |
| 914 | file_flags[9] = '\0'; |
| 915 | |
| 916 | return file_flags; |
| 917 | } |
| 918 | |
| 919 | /* Helper function to generate the name of an IP protocol. */ |
| 920 | |
| 921 | static const char * |
| 922 | fbsd_ipproto (int protocol) |
| 923 | { |
| 924 | switch (protocol) |
| 925 | { |
| 926 | case FBSD_IPPROTO_ICMP: |
| 927 | return "icmp"; |
| 928 | case FBSD_IPPROTO_TCP: |
| 929 | return "tcp"; |
| 930 | case FBSD_IPPROTO_UDP: |
| 931 | return "udp"; |
| 932 | case FBSD_IPPROTO_SCTP: |
| 933 | return "sctp"; |
| 934 | default: |
| 935 | { |
| 936 | char *str = get_print_cell (); |
| 937 | |
| 938 | xsnprintf (str, PRINT_CELL_SIZE, "ip<%d>", protocol); |
| 939 | return str; |
| 940 | } |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | /* Helper function to print out an IPv4 socket address. */ |
| 945 | |
| 946 | static void |
| 947 | fbsd_print_sockaddr_in (const void *sockaddr) |
| 948 | { |
| 949 | const struct fbsd_sockaddr_in *sin = |
| 950 | reinterpret_cast<const struct fbsd_sockaddr_in *> (sockaddr); |
| 951 | char buf[INET_ADDRSTRLEN]; |
| 952 | |
| 953 | if (inet_ntop (AF_INET, sin->sin_addr, buf, sizeof buf) == nullptr) |
| 954 | error (_("Failed to format IPv4 address")); |
| 955 | printf_filtered ("%s:%u", buf, |
| 956 | (sin->sin_port[0] << 8) | sin->sin_port[1]); |
| 957 | } |
| 958 | |
| 959 | /* Helper function to print out an IPv6 socket address. */ |
| 960 | |
| 961 | static void |
| 962 | fbsd_print_sockaddr_in6 (const void *sockaddr) |
| 963 | { |
| 964 | const struct fbsd_sockaddr_in6 *sin6 = |
| 965 | reinterpret_cast<const struct fbsd_sockaddr_in6 *> (sockaddr); |
| 966 | char buf[INET6_ADDRSTRLEN]; |
| 967 | |
| 968 | if (inet_ntop (AF_INET6, sin6->sin6_addr, buf, sizeof buf) == nullptr) |
| 969 | error (_("Failed to format IPv6 address")); |
| 970 | printf_filtered ("%s.%u", buf, |
| 971 | (sin6->sin6_port[0] << 8) | sin6->sin6_port[1]); |
| 972 | } |
| 973 | |
| 974 | /* See fbsd-tdep.h. */ |
| 975 | |
| 976 | void |
| 977 | fbsd_info_proc_files_header () |
| 978 | { |
| 979 | printf_filtered (_("Open files:\n\n")); |
| 980 | printf_filtered (" %6s %6s %10s %9s %s\n", |
| 981 | "FD", "Type", "Offset", "Flags ", "Name"); |
| 982 | } |
| 983 | |
| 984 | /* See fbsd-tdep.h. */ |
| 985 | |
| 986 | void |
| 987 | fbsd_info_proc_files_entry (int kf_type, int kf_fd, int kf_flags, |
| 988 | LONGEST kf_offset, int kf_vnode_type, |
| 989 | int kf_sock_domain, int kf_sock_type, |
| 990 | int kf_sock_protocol, const void *kf_sa_local, |
| 991 | const void *kf_sa_peer, const void *kf_path) |
| 992 | { |
| 993 | printf_filtered (" %6s %6s %10s %8s ", |
| 994 | fbsd_file_fd (kf_fd), |
| 995 | fbsd_file_type (kf_type, kf_vnode_type), |
| 996 | kf_offset > -1 ? hex_string (kf_offset) : "-", |
| 997 | fbsd_file_flags (kf_flags)); |
| 998 | if (kf_type == KINFO_FILE_TYPE_SOCKET) |
| 999 | { |
| 1000 | switch (kf_sock_domain) |
| 1001 | { |
| 1002 | case FBSD_AF_UNIX: |
| 1003 | { |
| 1004 | switch (kf_sock_type) |
| 1005 | { |
| 1006 | case FBSD_SOCK_STREAM: |
| 1007 | printf_filtered ("unix stream:"); |
| 1008 | break; |
| 1009 | case FBSD_SOCK_DGRAM: |
| 1010 | printf_filtered ("unix dgram:"); |
| 1011 | break; |
| 1012 | case FBSD_SOCK_SEQPACKET: |
| 1013 | printf_filtered ("unix seqpacket:"); |
| 1014 | break; |
| 1015 | default: |
| 1016 | printf_filtered ("unix <%d>:", kf_sock_type); |
| 1017 | break; |
| 1018 | } |
| 1019 | |
| 1020 | /* For local sockets, print out the first non-nul path |
| 1021 | rather than both paths. */ |
| 1022 | const struct fbsd_sockaddr_un *saddr_un |
| 1023 | = reinterpret_cast<const struct fbsd_sockaddr_un *> (kf_sa_local); |
| 1024 | if (saddr_un->sun_path[0] == 0) |
| 1025 | saddr_un = reinterpret_cast<const struct fbsd_sockaddr_un *> |
| 1026 | (kf_sa_peer); |
| 1027 | printf_filtered ("%s", saddr_un->sun_path); |
| 1028 | break; |
| 1029 | } |
| 1030 | case FBSD_AF_INET: |
| 1031 | printf_filtered ("%s4 ", fbsd_ipproto (kf_sock_protocol)); |
| 1032 | fbsd_print_sockaddr_in (kf_sa_local); |
| 1033 | printf_filtered (" -> "); |
| 1034 | fbsd_print_sockaddr_in (kf_sa_peer); |
| 1035 | break; |
| 1036 | case FBSD_AF_INET6: |
| 1037 | printf_filtered ("%s6 ", fbsd_ipproto (kf_sock_protocol)); |
| 1038 | fbsd_print_sockaddr_in6 (kf_sa_local); |
| 1039 | printf_filtered (" -> "); |
| 1040 | fbsd_print_sockaddr_in6 (kf_sa_peer); |
| 1041 | break; |
| 1042 | } |
| 1043 | } |
| 1044 | else |
| 1045 | printf_filtered ("%s", reinterpret_cast<const char *> (kf_path)); |
| 1046 | printf_filtered ("\n"); |
| 1047 | } |
| 1048 | |
| 1049 | /* Implement "info proc files" for a corefile. */ |
| 1050 | |
| 1051 | static void |
| 1052 | fbsd_core_info_proc_files (struct gdbarch *gdbarch) |
| 1053 | { |
| 1054 | asection *section |
| 1055 | = bfd_get_section_by_name (core_bfd, ".note.freebsdcore.files"); |
| 1056 | if (section == NULL) |
| 1057 | { |
| 1058 | warning (_("unable to find open files in core file")); |
| 1059 | return; |
| 1060 | } |
| 1061 | |
| 1062 | size_t note_size = bfd_section_size (section); |
| 1063 | if (note_size < 4) |
| 1064 | error (_("malformed core note - too short for header")); |
| 1065 | |
| 1066 | gdb::def_vector<unsigned char> contents (note_size); |
| 1067 | if (!bfd_get_section_contents (core_bfd, section, contents.data (), |
| 1068 | 0, note_size)) |
| 1069 | error (_("could not get core note contents")); |
| 1070 | |
| 1071 | unsigned char *descdata = contents.data (); |
| 1072 | unsigned char *descend = descdata + note_size; |
| 1073 | |
| 1074 | /* Skip over the structure size. */ |
| 1075 | descdata += 4; |
| 1076 | |
| 1077 | fbsd_info_proc_files_header (); |
| 1078 | |
| 1079 | while (descdata + KF_PATH < descend) |
| 1080 | { |
| 1081 | ULONGEST structsize = bfd_get_32 (core_bfd, descdata + KF_STRUCTSIZE); |
| 1082 | if (structsize < KF_PATH) |
| 1083 | error (_("malformed core note - file structure too small")); |
| 1084 | |
| 1085 | LONGEST type = bfd_get_signed_32 (core_bfd, descdata + KF_TYPE); |
| 1086 | LONGEST fd = bfd_get_signed_32 (core_bfd, descdata + KF_FD); |
| 1087 | LONGEST flags = bfd_get_signed_32 (core_bfd, descdata + KF_FLAGS); |
| 1088 | LONGEST offset = bfd_get_signed_64 (core_bfd, descdata + KF_OFFSET); |
| 1089 | LONGEST vnode_type = bfd_get_signed_32 (core_bfd, |
| 1090 | descdata + KF_VNODE_TYPE); |
| 1091 | LONGEST sock_domain = bfd_get_signed_32 (core_bfd, |
| 1092 | descdata + KF_SOCK_DOMAIN); |
| 1093 | LONGEST sock_type = bfd_get_signed_32 (core_bfd, descdata + KF_SOCK_TYPE); |
| 1094 | LONGEST sock_protocol = bfd_get_signed_32 (core_bfd, |
| 1095 | descdata + KF_SOCK_PROTOCOL); |
| 1096 | fbsd_info_proc_files_entry (type, fd, flags, offset, vnode_type, |
| 1097 | sock_domain, sock_type, sock_protocol, |
| 1098 | descdata + KF_SA_LOCAL, descdata + KF_SA_PEER, |
| 1099 | descdata + KF_PATH); |
| 1100 | |
| 1101 | descdata += structsize; |
| 1102 | } |
| 1103 | } |
| 1104 | |
| 1105 | /* Helper function to generate mappings flags for a single VM map |
| 1106 | entry in 'info proc mappings'. */ |
| 1107 | |
| 1108 | static const char * |
| 1109 | fbsd_vm_map_entry_flags (int kve_flags, int kve_protection) |
| 1110 | { |
| 1111 | static char vm_flags[9]; |
| 1112 | |
| 1113 | vm_flags[0] = (kve_protection & KINFO_VME_PROT_READ) ? 'r' : '-'; |
| 1114 | vm_flags[1] = (kve_protection & KINFO_VME_PROT_WRITE) ? 'w' : '-'; |
| 1115 | vm_flags[2] = (kve_protection & KINFO_VME_PROT_EXEC) ? 'x' : '-'; |
| 1116 | vm_flags[3] = ' '; |
| 1117 | vm_flags[4] = (kve_flags & KINFO_VME_FLAG_COW) ? 'C' : '-'; |
| 1118 | vm_flags[5] = (kve_flags & KINFO_VME_FLAG_NEEDS_COPY) ? 'N' : '-'; |
| 1119 | vm_flags[6] = (kve_flags & KINFO_VME_FLAG_SUPER) ? 'S' : '-'; |
| 1120 | vm_flags[7] = (kve_flags & KINFO_VME_FLAG_GROWS_UP) ? 'U' |
| 1121 | : (kve_flags & KINFO_VME_FLAG_GROWS_DOWN) ? 'D' : '-'; |
| 1122 | vm_flags[8] = '\0'; |
| 1123 | |
| 1124 | return vm_flags; |
| 1125 | } |
| 1126 | |
| 1127 | /* See fbsd-tdep.h. */ |
| 1128 | |
| 1129 | void |
| 1130 | fbsd_info_proc_mappings_header (int addr_bit) |
| 1131 | { |
| 1132 | printf_filtered (_("Mapped address spaces:\n\n")); |
| 1133 | if (addr_bit == 64) |
| 1134 | { |
| 1135 | printf_filtered (" %18s %18s %10s %10s %9s %s\n", |
| 1136 | "Start Addr", |
| 1137 | " End Addr", |
| 1138 | " Size", " Offset", "Flags ", "File"); |
| 1139 | } |
| 1140 | else |
| 1141 | { |
| 1142 | printf_filtered ("\t%10s %10s %10s %10s %9s %s\n", |
| 1143 | "Start Addr", |
| 1144 | " End Addr", |
| 1145 | " Size", " Offset", "Flags ", "File"); |
| 1146 | } |
| 1147 | } |
| 1148 | |
| 1149 | /* See fbsd-tdep.h. */ |
| 1150 | |
| 1151 | void |
| 1152 | fbsd_info_proc_mappings_entry (int addr_bit, ULONGEST kve_start, |
| 1153 | ULONGEST kve_end, ULONGEST kve_offset, |
| 1154 | int kve_flags, int kve_protection, |
| 1155 | const void *kve_path) |
| 1156 | { |
| 1157 | if (addr_bit == 64) |
| 1158 | { |
| 1159 | printf_filtered (" %18s %18s %10s %10s %9s %s\n", |
| 1160 | hex_string (kve_start), |
| 1161 | hex_string (kve_end), |
| 1162 | hex_string (kve_end - kve_start), |
| 1163 | hex_string (kve_offset), |
| 1164 | fbsd_vm_map_entry_flags (kve_flags, kve_protection), |
| 1165 | reinterpret_cast<const char *> (kve_path)); |
| 1166 | } |
| 1167 | else |
| 1168 | { |
| 1169 | printf_filtered ("\t%10s %10s %10s %10s %9s %s\n", |
| 1170 | hex_string (kve_start), |
| 1171 | hex_string (kve_end), |
| 1172 | hex_string (kve_end - kve_start), |
| 1173 | hex_string (kve_offset), |
| 1174 | fbsd_vm_map_entry_flags (kve_flags, kve_protection), |
| 1175 | reinterpret_cast<const char *> (kve_path)); |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | /* Implement "info proc mappings" for a corefile. */ |
| 1180 | |
| 1181 | static void |
| 1182 | fbsd_core_info_proc_mappings (struct gdbarch *gdbarch) |
| 1183 | { |
| 1184 | asection *section; |
| 1185 | unsigned char *descdata, *descend; |
| 1186 | size_t note_size; |
| 1187 | |
| 1188 | section = bfd_get_section_by_name (core_bfd, ".note.freebsdcore.vmmap"); |
| 1189 | if (section == NULL) |
| 1190 | { |
| 1191 | warning (_("unable to find mappings in core file")); |
| 1192 | return; |
| 1193 | } |
| 1194 | |
| 1195 | note_size = bfd_section_size (section); |
| 1196 | if (note_size < 4) |
| 1197 | error (_("malformed core note - too short for header")); |
| 1198 | |
| 1199 | gdb::def_vector<unsigned char> contents (note_size); |
| 1200 | if (!bfd_get_section_contents (core_bfd, section, contents.data (), |
| 1201 | 0, note_size)) |
| 1202 | error (_("could not get core note contents")); |
| 1203 | |
| 1204 | descdata = contents.data (); |
| 1205 | descend = descdata + note_size; |
| 1206 | |
| 1207 | /* Skip over the structure size. */ |
| 1208 | descdata += 4; |
| 1209 | |
| 1210 | fbsd_info_proc_mappings_header (gdbarch_addr_bit (gdbarch)); |
| 1211 | while (descdata + KVE_PATH < descend) |
| 1212 | { |
| 1213 | ULONGEST structsize = bfd_get_32 (core_bfd, descdata + KVE_STRUCTSIZE); |
| 1214 | if (structsize < KVE_PATH) |
| 1215 | error (_("malformed core note - vmmap entry too small")); |
| 1216 | |
| 1217 | ULONGEST start = bfd_get_64 (core_bfd, descdata + KVE_START); |
| 1218 | ULONGEST end = bfd_get_64 (core_bfd, descdata + KVE_END); |
| 1219 | ULONGEST offset = bfd_get_64 (core_bfd, descdata + KVE_OFFSET); |
| 1220 | LONGEST flags = bfd_get_signed_32 (core_bfd, descdata + KVE_FLAGS); |
| 1221 | LONGEST prot = bfd_get_signed_32 (core_bfd, descdata + KVE_PROTECTION); |
| 1222 | fbsd_info_proc_mappings_entry (gdbarch_addr_bit (gdbarch), start, end, |
| 1223 | offset, flags, prot, descdata + KVE_PATH); |
| 1224 | |
| 1225 | descdata += structsize; |
| 1226 | } |
| 1227 | } |
| 1228 | |
| 1229 | /* Fetch the pathname of a vnode for a single file descriptor from the |
| 1230 | file table core note. */ |
| 1231 | |
| 1232 | static gdb::unique_xmalloc_ptr<char> |
| 1233 | fbsd_core_vnode_path (struct gdbarch *gdbarch, int fd) |
| 1234 | { |
| 1235 | asection *section; |
| 1236 | unsigned char *descdata, *descend; |
| 1237 | size_t note_size; |
| 1238 | |
| 1239 | section = bfd_get_section_by_name (core_bfd, ".note.freebsdcore.files"); |
| 1240 | if (section == NULL) |
| 1241 | return nullptr; |
| 1242 | |
| 1243 | note_size = bfd_section_size (section); |
| 1244 | if (note_size < 4) |
| 1245 | error (_("malformed core note - too short for header")); |
| 1246 | |
| 1247 | gdb::def_vector<unsigned char> contents (note_size); |
| 1248 | if (!bfd_get_section_contents (core_bfd, section, contents.data (), |
| 1249 | 0, note_size)) |
| 1250 | error (_("could not get core note contents")); |
| 1251 | |
| 1252 | descdata = contents.data (); |
| 1253 | descend = descdata + note_size; |
| 1254 | |
| 1255 | /* Skip over the structure size. */ |
| 1256 | descdata += 4; |
| 1257 | |
| 1258 | while (descdata + KF_PATH < descend) |
| 1259 | { |
| 1260 | ULONGEST structsize; |
| 1261 | |
| 1262 | structsize = bfd_get_32 (core_bfd, descdata + KF_STRUCTSIZE); |
| 1263 | if (structsize < KF_PATH) |
| 1264 | error (_("malformed core note - file structure too small")); |
| 1265 | |
| 1266 | if (bfd_get_32 (core_bfd, descdata + KF_TYPE) == KINFO_FILE_TYPE_VNODE |
| 1267 | && bfd_get_signed_32 (core_bfd, descdata + KF_FD) == fd) |
| 1268 | { |
| 1269 | char *path = (char *) descdata + KF_PATH; |
| 1270 | return make_unique_xstrdup (path); |
| 1271 | } |
| 1272 | |
| 1273 | descdata += structsize; |
| 1274 | } |
| 1275 | return nullptr; |
| 1276 | } |
| 1277 | |
| 1278 | /* Helper function to read a struct timeval. */ |
| 1279 | |
| 1280 | static void |
| 1281 | fbsd_core_fetch_timeval (struct gdbarch *gdbarch, unsigned char *data, |
| 1282 | LONGEST &sec, ULONGEST &usec) |
| 1283 | { |
| 1284 | if (gdbarch_addr_bit (gdbarch) == 64) |
| 1285 | { |
| 1286 | sec = bfd_get_signed_64 (core_bfd, data); |
| 1287 | usec = bfd_get_64 (core_bfd, data + 8); |
| 1288 | } |
| 1289 | else if (bfd_get_arch (core_bfd) == bfd_arch_i386) |
| 1290 | { |
| 1291 | sec = bfd_get_signed_32 (core_bfd, data); |
| 1292 | usec = bfd_get_32 (core_bfd, data + 4); |
| 1293 | } |
| 1294 | else |
| 1295 | { |
| 1296 | sec = bfd_get_signed_64 (core_bfd, data); |
| 1297 | usec = bfd_get_32 (core_bfd, data + 8); |
| 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | /* Print out the contents of a signal set. */ |
| 1302 | |
| 1303 | static void |
| 1304 | fbsd_print_sigset (const char *descr, unsigned char *sigset) |
| 1305 | { |
| 1306 | printf_filtered ("%s: ", descr); |
| 1307 | for (int i = 0; i < SIG_WORDS; i++) |
| 1308 | printf_filtered ("%08x ", |
| 1309 | (unsigned int) bfd_get_32 (core_bfd, sigset + i * 4)); |
| 1310 | printf_filtered ("\n"); |
| 1311 | } |
| 1312 | |
| 1313 | /* Implement "info proc status" for a corefile. */ |
| 1314 | |
| 1315 | static void |
| 1316 | fbsd_core_info_proc_status (struct gdbarch *gdbarch) |
| 1317 | { |
| 1318 | const struct kinfo_proc_layout *kp; |
| 1319 | asection *section; |
| 1320 | unsigned char *descdata; |
| 1321 | int addr_bit, long_bit; |
| 1322 | size_t note_size; |
| 1323 | ULONGEST value; |
| 1324 | LONGEST sec; |
| 1325 | |
| 1326 | section = bfd_get_section_by_name (core_bfd, ".note.freebsdcore.proc"); |
| 1327 | if (section == NULL) |
| 1328 | { |
| 1329 | warning (_("unable to find process info in core file")); |
| 1330 | return; |
| 1331 | } |
| 1332 | |
| 1333 | addr_bit = gdbarch_addr_bit (gdbarch); |
| 1334 | if (addr_bit == 64) |
| 1335 | kp = &kinfo_proc_layout_64; |
| 1336 | else if (bfd_get_arch (core_bfd) == bfd_arch_i386) |
| 1337 | kp = &kinfo_proc_layout_i386; |
| 1338 | else |
| 1339 | kp = &kinfo_proc_layout_32; |
| 1340 | long_bit = gdbarch_long_bit (gdbarch); |
| 1341 | |
| 1342 | /* |
| 1343 | * Ensure that the note is large enough for all of the fields fetched |
| 1344 | * by this function. In particular, the note must contain the 32-bit |
| 1345 | * structure size, then it must be long enough to access the last |
| 1346 | * field used (ki_rusage_ch.ru_majflt) which is the size of a long. |
| 1347 | */ |
| 1348 | note_size = bfd_section_size (section); |
| 1349 | if (note_size < (4 + kp->ki_rusage_ch + kp->ru_majflt |
| 1350 | + long_bit / TARGET_CHAR_BIT)) |
| 1351 | error (_("malformed core note - too short")); |
| 1352 | |
| 1353 | gdb::def_vector<unsigned char> contents (note_size); |
| 1354 | if (!bfd_get_section_contents (core_bfd, section, contents.data (), |
| 1355 | 0, note_size)) |
| 1356 | error (_("could not get core note contents")); |
| 1357 | |
| 1358 | descdata = contents.data (); |
| 1359 | |
| 1360 | /* Skip over the structure size. */ |
| 1361 | descdata += 4; |
| 1362 | |
| 1363 | /* Verify 'ki_layout' is 0. */ |
| 1364 | if (bfd_get_32 (core_bfd, descdata + kp->ki_layout) != 0) |
| 1365 | { |
| 1366 | warning (_("unsupported process information in core file")); |
| 1367 | return; |
| 1368 | } |
| 1369 | |
| 1370 | printf_filtered ("Name: %.19s\n", descdata + kp->ki_comm); |
| 1371 | printf_filtered ("Process ID: %s\n", |
| 1372 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_pid))); |
| 1373 | printf_filtered ("Parent process: %s\n", |
| 1374 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_ppid))); |
| 1375 | printf_filtered ("Process group: %s\n", |
| 1376 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_pgid))); |
| 1377 | printf_filtered ("Session id: %s\n", |
| 1378 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_sid))); |
| 1379 | |
| 1380 | /* FreeBSD 12.0 and later store a 64-bit dev_t at 'ki_tdev'. Older |
| 1381 | kernels store a 32-bit dev_t at 'ki_tdev_freebsd11'. In older |
| 1382 | kernels the 64-bit 'ki_tdev' field is in a reserved section of |
| 1383 | the structure that is cleared to zero. Assume that a zero value |
| 1384 | in ki_tdev indicates a core dump from an older kernel and use the |
| 1385 | value in 'ki_tdev_freebsd11' instead. */ |
| 1386 | value = bfd_get_64 (core_bfd, descdata + kp->ki_tdev); |
| 1387 | if (value == 0) |
| 1388 | value = bfd_get_32 (core_bfd, descdata + kp->ki_tdev_freebsd11); |
| 1389 | printf_filtered ("TTY: %s\n", pulongest (value)); |
| 1390 | printf_filtered ("TTY owner process group: %s\n", |
| 1391 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_tpgid))); |
| 1392 | printf_filtered ("User IDs (real, effective, saved): %s %s %s\n", |
| 1393 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_ruid)), |
| 1394 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_uid)), |
| 1395 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_svuid))); |
| 1396 | printf_filtered ("Group IDs (real, effective, saved): %s %s %s\n", |
| 1397 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_rgid)), |
| 1398 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_groups)), |
| 1399 | pulongest (bfd_get_32 (core_bfd, descdata + kp->ki_svgid))); |
| 1400 | printf_filtered ("Groups: "); |
| 1401 | uint16_t ngroups = bfd_get_16 (core_bfd, descdata + kp->ki_ngroups); |
| 1402 | for (int i = 0; i < ngroups; i++) |
| 1403 | printf_filtered ("%s ", |
| 1404 | pulongest (bfd_get_32 (core_bfd, |
| 1405 | descdata + kp->ki_groups + i * 4))); |
| 1406 | printf_filtered ("\n"); |
| 1407 | value = bfd_get (long_bit, core_bfd, |
| 1408 | descdata + kp->ki_rusage + kp->ru_minflt); |
| 1409 | printf_filtered ("Minor faults (no memory page): %s\n", pulongest (value)); |
| 1410 | value = bfd_get (long_bit, core_bfd, |
| 1411 | descdata + kp->ki_rusage_ch + kp->ru_minflt); |
| 1412 | printf_filtered ("Minor faults, children: %s\n", pulongest (value)); |
| 1413 | value = bfd_get (long_bit, core_bfd, |
| 1414 | descdata + kp->ki_rusage + kp->ru_majflt); |
| 1415 | printf_filtered ("Major faults (memory page faults): %s\n", |
| 1416 | pulongest (value)); |
| 1417 | value = bfd_get (long_bit, core_bfd, |
| 1418 | descdata + kp->ki_rusage_ch + kp->ru_majflt); |
| 1419 | printf_filtered ("Major faults, children: %s\n", pulongest (value)); |
| 1420 | fbsd_core_fetch_timeval (gdbarch, |
| 1421 | descdata + kp->ki_rusage + kp->ru_utime, |
| 1422 | sec, value); |
| 1423 | printf_filtered ("utime: %s.%06d\n", plongest (sec), (int) value); |
| 1424 | fbsd_core_fetch_timeval (gdbarch, |
| 1425 | descdata + kp->ki_rusage + kp->ru_stime, |
| 1426 | sec, value); |
| 1427 | printf_filtered ("stime: %s.%06d\n", plongest (sec), (int) value); |
| 1428 | fbsd_core_fetch_timeval (gdbarch, |
| 1429 | descdata + kp->ki_rusage_ch + kp->ru_utime, |
| 1430 | sec, value); |
| 1431 | printf_filtered ("utime, children: %s.%06d\n", plongest (sec), (int) value); |
| 1432 | fbsd_core_fetch_timeval (gdbarch, |
| 1433 | descdata + kp->ki_rusage_ch + kp->ru_stime, |
| 1434 | sec, value); |
| 1435 | printf_filtered ("stime, children: %s.%06d\n", plongest (sec), (int) value); |
| 1436 | printf_filtered ("'nice' value: %d\n", |
| 1437 | (int) bfd_get_signed_8 (core_bfd, descdata + kp->ki_nice)); |
| 1438 | fbsd_core_fetch_timeval (gdbarch, descdata + kp->ki_start, sec, value); |
| 1439 | printf_filtered ("Start time: %s.%06d\n", plongest (sec), (int) value); |
| 1440 | printf_filtered ("Virtual memory size: %s kB\n", |
| 1441 | pulongest (bfd_get (addr_bit, core_bfd, |
| 1442 | descdata + kp->ki_size) / 1024)); |
| 1443 | printf_filtered ("Data size: %s pages\n", |
| 1444 | pulongest (bfd_get (addr_bit, core_bfd, |
| 1445 | descdata + kp->ki_dsize))); |
| 1446 | printf_filtered ("Stack size: %s pages\n", |
| 1447 | pulongest (bfd_get (addr_bit, core_bfd, |
| 1448 | descdata + kp->ki_ssize))); |
| 1449 | printf_filtered ("Text size: %s pages\n", |
| 1450 | pulongest (bfd_get (addr_bit, core_bfd, |
| 1451 | descdata + kp->ki_tsize))); |
| 1452 | printf_filtered ("Resident set size: %s pages\n", |
| 1453 | pulongest (bfd_get (addr_bit, core_bfd, |
| 1454 | descdata + kp->ki_rssize))); |
| 1455 | printf_filtered ("Maximum RSS: %s pages\n", |
| 1456 | pulongest (bfd_get (long_bit, core_bfd, |
| 1457 | descdata + kp->ki_rusage |
| 1458 | + kp->ru_maxrss))); |
| 1459 | fbsd_print_sigset ("Ignored Signals", descdata + kp->ki_sigignore); |
| 1460 | fbsd_print_sigset ("Caught Signals", descdata + kp->ki_sigcatch); |
| 1461 | } |
| 1462 | |
| 1463 | /* Implement the "core_info_proc" gdbarch method. */ |
| 1464 | |
| 1465 | static void |
| 1466 | fbsd_core_info_proc (struct gdbarch *gdbarch, const char *args, |
| 1467 | enum info_proc_what what) |
| 1468 | { |
| 1469 | bool do_cmdline = false; |
| 1470 | bool do_cwd = false; |
| 1471 | bool do_exe = false; |
| 1472 | bool do_files = false; |
| 1473 | bool do_mappings = false; |
| 1474 | bool do_status = false; |
| 1475 | int pid; |
| 1476 | |
| 1477 | switch (what) |
| 1478 | { |
| 1479 | case IP_MINIMAL: |
| 1480 | do_cmdline = true; |
| 1481 | do_cwd = true; |
| 1482 | do_exe = true; |
| 1483 | break; |
| 1484 | case IP_MAPPINGS: |
| 1485 | do_mappings = true; |
| 1486 | break; |
| 1487 | case IP_STATUS: |
| 1488 | case IP_STAT: |
| 1489 | do_status = true; |
| 1490 | break; |
| 1491 | case IP_CMDLINE: |
| 1492 | do_cmdline = true; |
| 1493 | break; |
| 1494 | case IP_EXE: |
| 1495 | do_exe = true; |
| 1496 | break; |
| 1497 | case IP_CWD: |
| 1498 | do_cwd = true; |
| 1499 | break; |
| 1500 | case IP_FILES: |
| 1501 | do_files = true; |
| 1502 | break; |
| 1503 | case IP_ALL: |
| 1504 | do_cmdline = true; |
| 1505 | do_cwd = true; |
| 1506 | do_exe = true; |
| 1507 | do_files = true; |
| 1508 | do_mappings = true; |
| 1509 | do_status = true; |
| 1510 | break; |
| 1511 | default: |
| 1512 | return; |
| 1513 | } |
| 1514 | |
| 1515 | pid = bfd_core_file_pid (core_bfd); |
| 1516 | if (pid != 0) |
| 1517 | printf_filtered (_("process %d\n"), pid); |
| 1518 | |
| 1519 | if (do_cmdline) |
| 1520 | { |
| 1521 | const char *cmdline; |
| 1522 | |
| 1523 | cmdline = bfd_core_file_failing_command (core_bfd); |
| 1524 | if (cmdline) |
| 1525 | printf_filtered ("cmdline = '%s'\n", cmdline); |
| 1526 | else |
| 1527 | warning (_("Command line unavailable")); |
| 1528 | } |
| 1529 | if (do_cwd) |
| 1530 | { |
| 1531 | gdb::unique_xmalloc_ptr<char> cwd = |
| 1532 | fbsd_core_vnode_path (gdbarch, KINFO_FILE_FD_TYPE_CWD); |
| 1533 | if (cwd) |
| 1534 | printf_filtered ("cwd = '%s'\n", cwd.get ()); |
| 1535 | else |
| 1536 | warning (_("unable to read current working directory")); |
| 1537 | } |
| 1538 | if (do_exe) |
| 1539 | { |
| 1540 | gdb::unique_xmalloc_ptr<char> exe = |
| 1541 | fbsd_core_vnode_path (gdbarch, KINFO_FILE_FD_TYPE_TEXT); |
| 1542 | if (exe) |
| 1543 | printf_filtered ("exe = '%s'\n", exe.get ()); |
| 1544 | else |
| 1545 | warning (_("unable to read executable path name")); |
| 1546 | } |
| 1547 | if (do_files) |
| 1548 | fbsd_core_info_proc_files (gdbarch); |
| 1549 | if (do_mappings) |
| 1550 | fbsd_core_info_proc_mappings (gdbarch); |
| 1551 | if (do_status) |
| 1552 | fbsd_core_info_proc_status (gdbarch); |
| 1553 | } |
| 1554 | |
| 1555 | /* Print descriptions of FreeBSD-specific AUXV entries to FILE. */ |
| 1556 | |
| 1557 | static void |
| 1558 | fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file, |
| 1559 | CORE_ADDR type, CORE_ADDR val) |
| 1560 | { |
| 1561 | const char *name = "???"; |
| 1562 | const char *description = ""; |
| 1563 | enum auxv_format format = AUXV_FORMAT_HEX; |
| 1564 | |
| 1565 | switch (type) |
| 1566 | { |
| 1567 | case AT_NULL: |
| 1568 | case AT_IGNORE: |
| 1569 | case AT_EXECFD: |
| 1570 | case AT_PHDR: |
| 1571 | case AT_PHENT: |
| 1572 | case AT_PHNUM: |
| 1573 | case AT_PAGESZ: |
| 1574 | case AT_BASE: |
| 1575 | case AT_FLAGS: |
| 1576 | case AT_ENTRY: |
| 1577 | case AT_NOTELF: |
| 1578 | case AT_UID: |
| 1579 | case AT_EUID: |
| 1580 | case AT_GID: |
| 1581 | case AT_EGID: |
| 1582 | default_print_auxv_entry (gdbarch, file, type, val); |
| 1583 | return; |
| 1584 | #define _TAGNAME(tag) #tag |
| 1585 | #define TAGNAME(tag) _TAGNAME(AT_##tag) |
| 1586 | #define TAG(tag, text, kind) \ |
| 1587 | case AT_FREEBSD_##tag: name = TAGNAME(tag); description = text; format = kind; break |
| 1588 | TAG (EXECPATH, _("Executable path"), AUXV_FORMAT_STR); |
| 1589 | TAG (CANARY, _("Canary for SSP"), AUXV_FORMAT_HEX); |
| 1590 | TAG (CANARYLEN, ("Length of the SSP canary"), AUXV_FORMAT_DEC); |
| 1591 | TAG (OSRELDATE, _("OSRELDATE"), AUXV_FORMAT_DEC); |
| 1592 | TAG (NCPUS, _("Number of CPUs"), AUXV_FORMAT_DEC); |
| 1593 | TAG (PAGESIZES, _("Pagesizes"), AUXV_FORMAT_HEX); |
| 1594 | TAG (PAGESIZESLEN, _("Number of pagesizes"), AUXV_FORMAT_DEC); |
| 1595 | TAG (TIMEKEEP, _("Pointer to timehands"), AUXV_FORMAT_HEX); |
| 1596 | TAG (STACKPROT, _("Initial stack protection"), AUXV_FORMAT_HEX); |
| 1597 | TAG (EHDRFLAGS, _("ELF header e_flags"), AUXV_FORMAT_HEX); |
| 1598 | TAG (HWCAP, _("Machine-dependent CPU capability hints"), AUXV_FORMAT_HEX); |
| 1599 | TAG (HWCAP2, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX); |
| 1600 | TAG (BSDFLAGS, _("ELF BSD flags"), AUXV_FORMAT_HEX); |
| 1601 | } |
| 1602 | |
| 1603 | fprint_auxv_entry (file, name, description, format, type, val); |
| 1604 | } |
| 1605 | |
| 1606 | /* Implement the "get_siginfo_type" gdbarch method. */ |
| 1607 | |
| 1608 | static struct type * |
| 1609 | fbsd_get_siginfo_type (struct gdbarch *gdbarch) |
| 1610 | { |
| 1611 | struct fbsd_gdbarch_data *fbsd_gdbarch_data; |
| 1612 | struct type *int_type, *int32_type, *uint32_type, *long_type, *void_ptr_type; |
| 1613 | struct type *uid_type, *pid_type; |
| 1614 | struct type *sigval_type, *reason_type; |
| 1615 | struct type *siginfo_type; |
| 1616 | struct type *type; |
| 1617 | |
| 1618 | fbsd_gdbarch_data = get_fbsd_gdbarch_data (gdbarch); |
| 1619 | if (fbsd_gdbarch_data->siginfo_type != NULL) |
| 1620 | return fbsd_gdbarch_data->siginfo_type; |
| 1621 | |
| 1622 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 1623 | 0, "int"); |
| 1624 | int32_type = arch_integer_type (gdbarch, 32, 0, "int32_t"); |
| 1625 | uint32_type = arch_integer_type (gdbarch, 32, 1, "uint32_t"); |
| 1626 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 1627 | 0, "long"); |
| 1628 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
| 1629 | |
| 1630 | /* union sigval */ |
| 1631 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 1632 | TYPE_NAME (sigval_type) = xstrdup ("sigval"); |
| 1633 | append_composite_type_field (sigval_type, "sival_int", int_type); |
| 1634 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); |
| 1635 | |
| 1636 | /* __pid_t */ |
| 1637 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 1638 | TYPE_LENGTH (int32_type) * TARGET_CHAR_BIT, "__pid_t"); |
| 1639 | TYPE_TARGET_TYPE (pid_type) = int32_type; |
| 1640 | TYPE_TARGET_STUB (pid_type) = 1; |
| 1641 | |
| 1642 | /* __uid_t */ |
| 1643 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 1644 | TYPE_LENGTH (uint32_type) * TARGET_CHAR_BIT, |
| 1645 | "__uid_t"); |
| 1646 | TYPE_TARGET_TYPE (uid_type) = uint32_type; |
| 1647 | TYPE_TARGET_STUB (uid_type) = 1; |
| 1648 | |
| 1649 | /* _reason */ |
| 1650 | reason_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 1651 | |
| 1652 | /* _fault */ |
| 1653 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 1654 | append_composite_type_field (type, "si_trapno", int_type); |
| 1655 | append_composite_type_field (reason_type, "_fault", type); |
| 1656 | |
| 1657 | /* _timer */ |
| 1658 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 1659 | append_composite_type_field (type, "si_timerid", int_type); |
| 1660 | append_composite_type_field (type, "si_overrun", int_type); |
| 1661 | append_composite_type_field (reason_type, "_timer", type); |
| 1662 | |
| 1663 | /* _mesgq */ |
| 1664 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 1665 | append_composite_type_field (type, "si_mqd", int_type); |
| 1666 | append_composite_type_field (reason_type, "_mesgq", type); |
| 1667 | |
| 1668 | /* _poll */ |
| 1669 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 1670 | append_composite_type_field (type, "si_band", long_type); |
| 1671 | append_composite_type_field (reason_type, "_poll", type); |
| 1672 | |
| 1673 | /* __spare__ */ |
| 1674 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 1675 | append_composite_type_field (type, "__spare1__", long_type); |
| 1676 | append_composite_type_field (type, "__spare2__", |
| 1677 | init_vector_type (int_type, 7)); |
| 1678 | append_composite_type_field (reason_type, "__spare__", type); |
| 1679 | |
| 1680 | /* struct siginfo */ |
| 1681 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 1682 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
| 1683 | append_composite_type_field (siginfo_type, "si_signo", int_type); |
| 1684 | append_composite_type_field (siginfo_type, "si_errno", int_type); |
| 1685 | append_composite_type_field (siginfo_type, "si_code", int_type); |
| 1686 | append_composite_type_field (siginfo_type, "si_pid", pid_type); |
| 1687 | append_composite_type_field (siginfo_type, "si_uid", uid_type); |
| 1688 | append_composite_type_field (siginfo_type, "si_status", int_type); |
| 1689 | append_composite_type_field (siginfo_type, "si_addr", void_ptr_type); |
| 1690 | append_composite_type_field (siginfo_type, "si_value", sigval_type); |
| 1691 | append_composite_type_field (siginfo_type, "_reason", reason_type); |
| 1692 | |
| 1693 | fbsd_gdbarch_data->siginfo_type = siginfo_type; |
| 1694 | |
| 1695 | return siginfo_type; |
| 1696 | } |
| 1697 | |
| 1698 | /* Implement the "gdb_signal_from_target" gdbarch method. */ |
| 1699 | |
| 1700 | static enum gdb_signal |
| 1701 | fbsd_gdb_signal_from_target (struct gdbarch *gdbarch, int signal) |
| 1702 | { |
| 1703 | switch (signal) |
| 1704 | { |
| 1705 | case 0: |
| 1706 | return GDB_SIGNAL_0; |
| 1707 | |
| 1708 | case FREEBSD_SIGHUP: |
| 1709 | return GDB_SIGNAL_HUP; |
| 1710 | |
| 1711 | case FREEBSD_SIGINT: |
| 1712 | return GDB_SIGNAL_INT; |
| 1713 | |
| 1714 | case FREEBSD_SIGQUIT: |
| 1715 | return GDB_SIGNAL_QUIT; |
| 1716 | |
| 1717 | case FREEBSD_SIGILL: |
| 1718 | return GDB_SIGNAL_ILL; |
| 1719 | |
| 1720 | case FREEBSD_SIGTRAP: |
| 1721 | return GDB_SIGNAL_TRAP; |
| 1722 | |
| 1723 | case FREEBSD_SIGABRT: |
| 1724 | return GDB_SIGNAL_ABRT; |
| 1725 | |
| 1726 | case FREEBSD_SIGEMT: |
| 1727 | return GDB_SIGNAL_EMT; |
| 1728 | |
| 1729 | case FREEBSD_SIGFPE: |
| 1730 | return GDB_SIGNAL_FPE; |
| 1731 | |
| 1732 | case FREEBSD_SIGKILL: |
| 1733 | return GDB_SIGNAL_KILL; |
| 1734 | |
| 1735 | case FREEBSD_SIGBUS: |
| 1736 | return GDB_SIGNAL_BUS; |
| 1737 | |
| 1738 | case FREEBSD_SIGSEGV: |
| 1739 | return GDB_SIGNAL_SEGV; |
| 1740 | |
| 1741 | case FREEBSD_SIGSYS: |
| 1742 | return GDB_SIGNAL_SYS; |
| 1743 | |
| 1744 | case FREEBSD_SIGPIPE: |
| 1745 | return GDB_SIGNAL_PIPE; |
| 1746 | |
| 1747 | case FREEBSD_SIGALRM: |
| 1748 | return GDB_SIGNAL_ALRM; |
| 1749 | |
| 1750 | case FREEBSD_SIGTERM: |
| 1751 | return GDB_SIGNAL_TERM; |
| 1752 | |
| 1753 | case FREEBSD_SIGURG: |
| 1754 | return GDB_SIGNAL_URG; |
| 1755 | |
| 1756 | case FREEBSD_SIGSTOP: |
| 1757 | return GDB_SIGNAL_STOP; |
| 1758 | |
| 1759 | case FREEBSD_SIGTSTP: |
| 1760 | return GDB_SIGNAL_TSTP; |
| 1761 | |
| 1762 | case FREEBSD_SIGCONT: |
| 1763 | return GDB_SIGNAL_CONT; |
| 1764 | |
| 1765 | case FREEBSD_SIGCHLD: |
| 1766 | return GDB_SIGNAL_CHLD; |
| 1767 | |
| 1768 | case FREEBSD_SIGTTIN: |
| 1769 | return GDB_SIGNAL_TTIN; |
| 1770 | |
| 1771 | case FREEBSD_SIGTTOU: |
| 1772 | return GDB_SIGNAL_TTOU; |
| 1773 | |
| 1774 | case FREEBSD_SIGIO: |
| 1775 | return GDB_SIGNAL_IO; |
| 1776 | |
| 1777 | case FREEBSD_SIGXCPU: |
| 1778 | return GDB_SIGNAL_XCPU; |
| 1779 | |
| 1780 | case FREEBSD_SIGXFSZ: |
| 1781 | return GDB_SIGNAL_XFSZ; |
| 1782 | |
| 1783 | case FREEBSD_SIGVTALRM: |
| 1784 | return GDB_SIGNAL_VTALRM; |
| 1785 | |
| 1786 | case FREEBSD_SIGPROF: |
| 1787 | return GDB_SIGNAL_PROF; |
| 1788 | |
| 1789 | case FREEBSD_SIGWINCH: |
| 1790 | return GDB_SIGNAL_WINCH; |
| 1791 | |
| 1792 | case FREEBSD_SIGINFO: |
| 1793 | return GDB_SIGNAL_INFO; |
| 1794 | |
| 1795 | case FREEBSD_SIGUSR1: |
| 1796 | return GDB_SIGNAL_USR1; |
| 1797 | |
| 1798 | case FREEBSD_SIGUSR2: |
| 1799 | return GDB_SIGNAL_USR2; |
| 1800 | |
| 1801 | /* SIGTHR is the same as SIGLWP on FreeBSD. */ |
| 1802 | case FREEBSD_SIGTHR: |
| 1803 | return GDB_SIGNAL_LWP; |
| 1804 | |
| 1805 | case FREEBSD_SIGLIBRT: |
| 1806 | return GDB_SIGNAL_LIBRT; |
| 1807 | } |
| 1808 | |
| 1809 | if (signal >= FREEBSD_SIGRTMIN && signal <= FREEBSD_SIGRTMAX) |
| 1810 | { |
| 1811 | int offset = signal - FREEBSD_SIGRTMIN; |
| 1812 | |
| 1813 | return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_65 + offset); |
| 1814 | } |
| 1815 | |
| 1816 | return GDB_SIGNAL_UNKNOWN; |
| 1817 | } |
| 1818 | |
| 1819 | /* Implement the "gdb_signal_to_target" gdbarch method. */ |
| 1820 | |
| 1821 | static int |
| 1822 | fbsd_gdb_signal_to_target (struct gdbarch *gdbarch, |
| 1823 | enum gdb_signal signal) |
| 1824 | { |
| 1825 | switch (signal) |
| 1826 | { |
| 1827 | case GDB_SIGNAL_0: |
| 1828 | return 0; |
| 1829 | |
| 1830 | case GDB_SIGNAL_HUP: |
| 1831 | return FREEBSD_SIGHUP; |
| 1832 | |
| 1833 | case GDB_SIGNAL_INT: |
| 1834 | return FREEBSD_SIGINT; |
| 1835 | |
| 1836 | case GDB_SIGNAL_QUIT: |
| 1837 | return FREEBSD_SIGQUIT; |
| 1838 | |
| 1839 | case GDB_SIGNAL_ILL: |
| 1840 | return FREEBSD_SIGILL; |
| 1841 | |
| 1842 | case GDB_SIGNAL_TRAP: |
| 1843 | return FREEBSD_SIGTRAP; |
| 1844 | |
| 1845 | case GDB_SIGNAL_ABRT: |
| 1846 | return FREEBSD_SIGABRT; |
| 1847 | |
| 1848 | case GDB_SIGNAL_EMT: |
| 1849 | return FREEBSD_SIGEMT; |
| 1850 | |
| 1851 | case GDB_SIGNAL_FPE: |
| 1852 | return FREEBSD_SIGFPE; |
| 1853 | |
| 1854 | case GDB_SIGNAL_KILL: |
| 1855 | return FREEBSD_SIGKILL; |
| 1856 | |
| 1857 | case GDB_SIGNAL_BUS: |
| 1858 | return FREEBSD_SIGBUS; |
| 1859 | |
| 1860 | case GDB_SIGNAL_SEGV: |
| 1861 | return FREEBSD_SIGSEGV; |
| 1862 | |
| 1863 | case GDB_SIGNAL_SYS: |
| 1864 | return FREEBSD_SIGSYS; |
| 1865 | |
| 1866 | case GDB_SIGNAL_PIPE: |
| 1867 | return FREEBSD_SIGPIPE; |
| 1868 | |
| 1869 | case GDB_SIGNAL_ALRM: |
| 1870 | return FREEBSD_SIGALRM; |
| 1871 | |
| 1872 | case GDB_SIGNAL_TERM: |
| 1873 | return FREEBSD_SIGTERM; |
| 1874 | |
| 1875 | case GDB_SIGNAL_URG: |
| 1876 | return FREEBSD_SIGURG; |
| 1877 | |
| 1878 | case GDB_SIGNAL_STOP: |
| 1879 | return FREEBSD_SIGSTOP; |
| 1880 | |
| 1881 | case GDB_SIGNAL_TSTP: |
| 1882 | return FREEBSD_SIGTSTP; |
| 1883 | |
| 1884 | case GDB_SIGNAL_CONT: |
| 1885 | return FREEBSD_SIGCONT; |
| 1886 | |
| 1887 | case GDB_SIGNAL_CHLD: |
| 1888 | return FREEBSD_SIGCHLD; |
| 1889 | |
| 1890 | case GDB_SIGNAL_TTIN: |
| 1891 | return FREEBSD_SIGTTIN; |
| 1892 | |
| 1893 | case GDB_SIGNAL_TTOU: |
| 1894 | return FREEBSD_SIGTTOU; |
| 1895 | |
| 1896 | case GDB_SIGNAL_IO: |
| 1897 | return FREEBSD_SIGIO; |
| 1898 | |
| 1899 | case GDB_SIGNAL_XCPU: |
| 1900 | return FREEBSD_SIGXCPU; |
| 1901 | |
| 1902 | case GDB_SIGNAL_XFSZ: |
| 1903 | return FREEBSD_SIGXFSZ; |
| 1904 | |
| 1905 | case GDB_SIGNAL_VTALRM: |
| 1906 | return FREEBSD_SIGVTALRM; |
| 1907 | |
| 1908 | case GDB_SIGNAL_PROF: |
| 1909 | return FREEBSD_SIGPROF; |
| 1910 | |
| 1911 | case GDB_SIGNAL_WINCH: |
| 1912 | return FREEBSD_SIGWINCH; |
| 1913 | |
| 1914 | case GDB_SIGNAL_INFO: |
| 1915 | return FREEBSD_SIGINFO; |
| 1916 | |
| 1917 | case GDB_SIGNAL_USR1: |
| 1918 | return FREEBSD_SIGUSR1; |
| 1919 | |
| 1920 | case GDB_SIGNAL_USR2: |
| 1921 | return FREEBSD_SIGUSR2; |
| 1922 | |
| 1923 | case GDB_SIGNAL_LWP: |
| 1924 | return FREEBSD_SIGTHR; |
| 1925 | |
| 1926 | case GDB_SIGNAL_LIBRT: |
| 1927 | return FREEBSD_SIGLIBRT; |
| 1928 | } |
| 1929 | |
| 1930 | if (signal >= GDB_SIGNAL_REALTIME_65 |
| 1931 | && signal <= GDB_SIGNAL_REALTIME_126) |
| 1932 | { |
| 1933 | int offset = signal - GDB_SIGNAL_REALTIME_65; |
| 1934 | |
| 1935 | return FREEBSD_SIGRTMIN + offset; |
| 1936 | } |
| 1937 | |
| 1938 | return -1; |
| 1939 | } |
| 1940 | |
| 1941 | /* Implement the "get_syscall_number" gdbarch method. */ |
| 1942 | |
| 1943 | static LONGEST |
| 1944 | fbsd_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread) |
| 1945 | { |
| 1946 | |
| 1947 | /* FreeBSD doesn't use gdbarch_get_syscall_number since FreeBSD |
| 1948 | native targets fetch the system call number from the |
| 1949 | 'pl_syscall_code' member of struct ptrace_lwpinfo in fbsd_wait. |
| 1950 | However, system call catching requires this function to be |
| 1951 | set. */ |
| 1952 | |
| 1953 | internal_error (__FILE__, __LINE__, _("fbsd_get_sycall_number called")); |
| 1954 | } |
| 1955 | |
| 1956 | /* Read an integer symbol value from the current target. */ |
| 1957 | |
| 1958 | static LONGEST |
| 1959 | fbsd_read_integer_by_name (struct gdbarch *gdbarch, const char *name) |
| 1960 | { |
| 1961 | bound_minimal_symbol ms = lookup_minimal_symbol (name, NULL, NULL); |
| 1962 | if (ms.minsym == NULL) |
| 1963 | error (_("Unable to resolve symbol '%s'"), name); |
| 1964 | |
| 1965 | gdb_byte buf[4]; |
| 1966 | if (target_read_memory (BMSYMBOL_VALUE_ADDRESS (ms), buf, sizeof buf) != 0) |
| 1967 | error (_("Unable to read value of '%s'"), name); |
| 1968 | |
| 1969 | return extract_signed_integer (buf, sizeof buf, gdbarch_byte_order (gdbarch)); |
| 1970 | } |
| 1971 | |
| 1972 | /* Lookup offsets of fields in the runtime linker's 'Obj_Entry' |
| 1973 | structure needed to determine the TLS index of an object file. */ |
| 1974 | |
| 1975 | static void |
| 1976 | fbsd_fetch_rtld_offsets (struct gdbarch *gdbarch, struct fbsd_pspace_data *data) |
| 1977 | { |
| 1978 | try |
| 1979 | { |
| 1980 | /* Fetch offsets from debug symbols in rtld. */ |
| 1981 | struct symbol *obj_entry_sym |
| 1982 | = lookup_symbol_in_language ("Struct_Obj_Entry", NULL, STRUCT_DOMAIN, |
| 1983 | language_c, NULL).symbol; |
| 1984 | if (obj_entry_sym == NULL) |
| 1985 | error (_("Unable to find Struct_Obj_Entry symbol")); |
| 1986 | data->off_linkmap = lookup_struct_elt (SYMBOL_TYPE(obj_entry_sym), |
| 1987 | "linkmap", 0).offset / 8; |
| 1988 | data->off_tlsindex = lookup_struct_elt (SYMBOL_TYPE(obj_entry_sym), |
| 1989 | "tlsindex", 0).offset / 8; |
| 1990 | data->rtld_offsets_valid = true; |
| 1991 | return; |
| 1992 | } |
| 1993 | catch (const gdb_exception_error &e) |
| 1994 | { |
| 1995 | data->off_linkmap = -1; |
| 1996 | } |
| 1997 | |
| 1998 | try |
| 1999 | { |
| 2000 | /* Fetch offsets from global variables in libthr. Note that |
| 2001 | this does not work for single-threaded processes that are not |
| 2002 | linked against libthr. */ |
| 2003 | data->off_linkmap = fbsd_read_integer_by_name (gdbarch, |
| 2004 | "_thread_off_linkmap"); |
| 2005 | data->off_tlsindex = fbsd_read_integer_by_name (gdbarch, |
| 2006 | "_thread_off_tlsindex"); |
| 2007 | data->rtld_offsets_valid = true; |
| 2008 | return; |
| 2009 | } |
| 2010 | catch (const gdb_exception_error &e) |
| 2011 | { |
| 2012 | data->off_linkmap = -1; |
| 2013 | } |
| 2014 | } |
| 2015 | |
| 2016 | /* Helper function to read the TLS index of an object file associated |
| 2017 | with a link map entry at LM_ADDR. */ |
| 2018 | |
| 2019 | static LONGEST |
| 2020 | fbsd_get_tls_index (struct gdbarch *gdbarch, CORE_ADDR lm_addr) |
| 2021 | { |
| 2022 | struct fbsd_pspace_data *data = get_fbsd_pspace_data (current_program_space); |
| 2023 | |
| 2024 | if (!data->rtld_offsets_valid) |
| 2025 | fbsd_fetch_rtld_offsets (gdbarch, data); |
| 2026 | |
| 2027 | if (data->off_linkmap == -1) |
| 2028 | throw_error (TLS_GENERIC_ERROR, |
| 2029 | _("Cannot fetch runtime linker structure offsets")); |
| 2030 | |
| 2031 | /* Simulate container_of to convert from LM_ADDR to the Obj_Entry |
| 2032 | pointer and then compute the offset of the tlsindex member. */ |
| 2033 | CORE_ADDR tlsindex_addr = lm_addr - data->off_linkmap + data->off_tlsindex; |
| 2034 | |
| 2035 | gdb_byte buf[4]; |
| 2036 | if (target_read_memory (tlsindex_addr, buf, sizeof buf) != 0) |
| 2037 | throw_error (TLS_GENERIC_ERROR, |
| 2038 | _("Cannot find thread-local variables on this target")); |
| 2039 | |
| 2040 | return extract_signed_integer (buf, sizeof buf, gdbarch_byte_order (gdbarch)); |
| 2041 | } |
| 2042 | |
| 2043 | /* See fbsd-tdep.h. */ |
| 2044 | |
| 2045 | CORE_ADDR |
| 2046 | fbsd_get_thread_local_address (struct gdbarch *gdbarch, CORE_ADDR dtv_addr, |
| 2047 | CORE_ADDR lm_addr, CORE_ADDR offset) |
| 2048 | { |
| 2049 | LONGEST tls_index = fbsd_get_tls_index (gdbarch, lm_addr); |
| 2050 | |
| 2051 | gdb_byte buf[gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT]; |
| 2052 | if (target_read_memory (dtv_addr, buf, sizeof buf) != 0) |
| 2053 | throw_error (TLS_GENERIC_ERROR, |
| 2054 | _("Cannot find thread-local variables on this target")); |
| 2055 | |
| 2056 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 2057 | CORE_ADDR addr = gdbarch_pointer_to_address (gdbarch, |
| 2058 | builtin->builtin_data_ptr, buf); |
| 2059 | |
| 2060 | addr += (tls_index + 1) * TYPE_LENGTH (builtin->builtin_data_ptr); |
| 2061 | if (target_read_memory (addr, buf, sizeof buf) != 0) |
| 2062 | throw_error (TLS_GENERIC_ERROR, |
| 2063 | _("Cannot find thread-local variables on this target")); |
| 2064 | |
| 2065 | addr = gdbarch_pointer_to_address (gdbarch, builtin->builtin_data_ptr, buf); |
| 2066 | return addr + offset; |
| 2067 | } |
| 2068 | |
| 2069 | /* To be called from GDB_OSABI_FREEBSD handlers. */ |
| 2070 | |
| 2071 | void |
| 2072 | fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 2073 | { |
| 2074 | set_gdbarch_core_pid_to_str (gdbarch, fbsd_core_pid_to_str); |
| 2075 | set_gdbarch_core_thread_name (gdbarch, fbsd_core_thread_name); |
| 2076 | set_gdbarch_core_xfer_siginfo (gdbarch, fbsd_core_xfer_siginfo); |
| 2077 | set_gdbarch_make_corefile_notes (gdbarch, fbsd_make_corefile_notes); |
| 2078 | set_gdbarch_core_info_proc (gdbarch, fbsd_core_info_proc); |
| 2079 | set_gdbarch_print_auxv_entry (gdbarch, fbsd_print_auxv_entry); |
| 2080 | set_gdbarch_get_siginfo_type (gdbarch, fbsd_get_siginfo_type); |
| 2081 | set_gdbarch_gdb_signal_from_target (gdbarch, fbsd_gdb_signal_from_target); |
| 2082 | set_gdbarch_gdb_signal_to_target (gdbarch, fbsd_gdb_signal_to_target); |
| 2083 | |
| 2084 | /* `catch syscall' */ |
| 2085 | set_xml_syscall_file_name (gdbarch, "syscalls/freebsd.xml"); |
| 2086 | set_gdbarch_get_syscall_number (gdbarch, fbsd_get_syscall_number); |
| 2087 | } |
| 2088 | |
| 2089 | void _initialize_fbsd_tdep (); |
| 2090 | void |
| 2091 | _initialize_fbsd_tdep () |
| 2092 | { |
| 2093 | fbsd_gdbarch_data_handle = |
| 2094 | gdbarch_data_register_post_init (init_fbsd_gdbarch_data); |
| 2095 | } |