| 1 | /* Low level interface for debugging Solaris threads for GDB, the GNU debugger. |
| 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 |
| 3 | 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 2 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, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | /* This module implements a sort of half target that sits between the |
| 23 | machine-independent parts of GDB and the /proc interface (procfs.c) to |
| 24 | provide access to the Solaris user-mode thread implementation. |
| 25 | |
| 26 | Solaris threads are true user-mode threads, which are invoked via the thr_* |
| 27 | and pthread_* (native and Posix respectivly) interfaces. These are mostly |
| 28 | implemented in user-space, with all thread context kept in various |
| 29 | structures that live in the user's heap. These should not be confused with |
| 30 | lightweight processes (LWPs), which are implemented by the kernel, and |
| 31 | scheduled without explicit intervention by the process. |
| 32 | |
| 33 | Just to confuse things a little, Solaris threads (both native and Posix) are |
| 34 | actually implemented using LWPs. In general, there are going to be more |
| 35 | threads than LWPs. There is no fixed correspondence between a thread and an |
| 36 | LWP. When a thread wants to run, it gets scheduled onto the first available |
| 37 | LWP and can therefore migrate from one LWP to another as time goes on. A |
| 38 | sleeping thread may not be associated with an LWP at all! |
| 39 | |
| 40 | To make it possible to mess with threads, Sun provides a library called |
| 41 | libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't |
| 42 | have a published interface). This interface has an upper part, which it |
| 43 | provides, and a lower part which I provide. The upper part consists of the |
| 44 | td_* routines, which allow me to find all the threads, query their state, |
| 45 | etc... The lower part consists of all of the ps_*, which are used by the |
| 46 | td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc... |
| 47 | The ps_* routines actually do most of their work by calling functions in |
| 48 | procfs.c. */ |
| 49 | |
| 50 | #include "defs.h" |
| 51 | #include <thread.h> |
| 52 | #include <proc_service.h> |
| 53 | #include <thread_db.h> |
| 54 | #include "gdbthread.h" |
| 55 | #include "target.h" |
| 56 | #include "inferior.h" |
| 57 | #include <fcntl.h> |
| 58 | #include <sys/stat.h> |
| 59 | #include <dlfcn.h> |
| 60 | #include "gdbcmd.h" |
| 61 | #include "gdbcore.h" |
| 62 | #include "regcache.h" |
| 63 | |
| 64 | extern struct target_ops sol_thread_ops; /* Forward declaration */ |
| 65 | extern struct target_ops sol_core_ops; /* Forward declaration */ |
| 66 | |
| 67 | /* place to store core_ops before we overwrite it */ |
| 68 | static struct target_ops orig_core_ops; |
| 69 | |
| 70 | struct target_ops sol_thread_ops; |
| 71 | struct target_ops sol_core_ops; |
| 72 | |
| 73 | extern int procfs_suppress_run; |
| 74 | extern struct target_ops procfs_ops; /* target vector for procfs.c */ |
| 75 | extern struct target_ops core_ops; /* target vector for corelow.c */ |
| 76 | extern char *procfs_pid_to_str (int pid); |
| 77 | |
| 78 | /* Prototypes for supply_gregset etc. */ |
| 79 | #include "gregset.h" |
| 80 | |
| 81 | /* This struct is defined by us, but mainly used for the proc_service interface. |
| 82 | We don't have much use for it, except as a handy place to get a real pid |
| 83 | for memory accesses. */ |
| 84 | |
| 85 | struct ps_prochandle |
| 86 | { |
| 87 | pid_t pid; |
| 88 | }; |
| 89 | |
| 90 | struct string_map |
| 91 | { |
| 92 | int num; |
| 93 | char *str; |
| 94 | }; |
| 95 | |
| 96 | static struct ps_prochandle main_ph; |
| 97 | static td_thragent_t *main_ta; |
| 98 | static int sol_thread_active = 0; |
| 99 | |
| 100 | static struct cleanup *save_inferior_pid (void); |
| 101 | static void restore_inferior_pid (void *pid); |
| 102 | static char *td_err_string (td_err_e errcode); |
| 103 | static char *td_state_string (td_thr_state_e statecode); |
| 104 | static int thread_to_lwp (int thread_id, int default_lwp); |
| 105 | static void sol_thread_resume (int pid, int step, enum target_signal signo); |
| 106 | static int lwp_to_thread (int lwp); |
| 107 | static int sol_thread_alive (int pid); |
| 108 | static void sol_core_close (int quitting); |
| 109 | |
| 110 | static void init_sol_thread_ops (void); |
| 111 | static void init_sol_core_ops (void); |
| 112 | |
| 113 | /* Default definitions: These must be defined in tm.h |
| 114 | if they are to be shared with a process module such as procfs. */ |
| 115 | |
| 116 | #define THREAD_FLAG 0x80000000 |
| 117 | #define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0) |
| 118 | #define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0) |
| 119 | #define GET_LWP(PID) TIDGET (PID) |
| 120 | #define GET_THREAD(PID) TIDGET (PID) |
| 121 | #define BUILD_LWP(TID, PID) MERGEPID (PID, TID) |
| 122 | |
| 123 | #define BUILD_THREAD(TID, PID) (MERGEPID (PID, TID) | THREAD_FLAG) |
| 124 | |
| 125 | /* Pointers to routines from lithread_db resolved by dlopen() */ |
| 126 | |
| 127 | static void (*p_td_log) (const int on_off); |
| 128 | static td_err_e (*p_td_ta_new) (const struct ps_prochandle * ph_p, |
| 129 | td_thragent_t ** ta_pp); |
| 130 | static td_err_e (*p_td_ta_delete) (td_thragent_t * ta_p); |
| 131 | static td_err_e (*p_td_init) (void); |
| 132 | static td_err_e (*p_td_ta_get_ph) (const td_thragent_t * ta_p, |
| 133 | struct ps_prochandle ** ph_pp); |
| 134 | static td_err_e (*p_td_ta_get_nthreads) (const td_thragent_t * ta_p, |
| 135 | int *nthread_p); |
| 136 | static td_err_e (*p_td_ta_tsd_iter) (const td_thragent_t * ta_p, |
| 137 | td_key_iter_f * cb, |
| 138 | void *cbdata_p); |
| 139 | static td_err_e (*p_td_ta_thr_iter) (const td_thragent_t * ta_p, |
| 140 | td_thr_iter_f * cb, |
| 141 | void *cbdata_p, |
| 142 | td_thr_state_e state, |
| 143 | int ti_pri, |
| 144 | sigset_t * ti_sigmask_p, |
| 145 | unsigned ti_user_flags); |
| 146 | static td_err_e (*p_td_thr_validate) (const td_thrhandle_t * th_p); |
| 147 | static td_err_e (*p_td_thr_tsd) (const td_thrhandle_t * th_p, |
| 148 | const thread_key_t key, |
| 149 | void **data_pp); |
| 150 | static td_err_e (*p_td_thr_get_info) (const td_thrhandle_t * th_p, |
| 151 | td_thrinfo_t * ti_p); |
| 152 | static td_err_e (*p_td_thr_getfpregs) (const td_thrhandle_t * th_p, |
| 153 | prfpregset_t * fpregset); |
| 154 | static td_err_e (*p_td_thr_getxregsize) (const td_thrhandle_t * th_p, |
| 155 | int *xregsize); |
| 156 | static td_err_e (*p_td_thr_getxregs) (const td_thrhandle_t * th_p, |
| 157 | const caddr_t xregset); |
| 158 | static td_err_e (*p_td_thr_sigsetmask) (const td_thrhandle_t * th_p, |
| 159 | const sigset_t ti_sigmask); |
| 160 | static td_err_e (*p_td_thr_setprio) (const td_thrhandle_t * th_p, |
| 161 | const int ti_pri); |
| 162 | static td_err_e (*p_td_thr_setsigpending) (const td_thrhandle_t * th_p, |
| 163 | const uchar_t ti_pending_flag, |
| 164 | const sigset_t ti_pending); |
| 165 | static td_err_e (*p_td_thr_setfpregs) (const td_thrhandle_t * th_p, |
| 166 | const prfpregset_t * fpregset); |
| 167 | static td_err_e (*p_td_thr_setxregs) (const td_thrhandle_t * th_p, |
| 168 | const caddr_t xregset); |
| 169 | static td_err_e (*p_td_ta_map_id2thr) (const td_thragent_t * ta_p, |
| 170 | thread_t tid, |
| 171 | td_thrhandle_t * th_p); |
| 172 | static td_err_e (*p_td_ta_map_lwp2thr) (const td_thragent_t * ta_p, |
| 173 | lwpid_t lwpid, |
| 174 | td_thrhandle_t * th_p); |
| 175 | static td_err_e (*p_td_thr_getgregs) (const td_thrhandle_t * th_p, |
| 176 | prgregset_t regset); |
| 177 | static td_err_e (*p_td_thr_setgregs) (const td_thrhandle_t * th_p, |
| 178 | const prgregset_t regset); |
| 179 | |
| 180 | /* |
| 181 | |
| 182 | LOCAL FUNCTION |
| 183 | |
| 184 | td_err_string - Convert a thread_db error code to a string |
| 185 | |
| 186 | SYNOPSIS |
| 187 | |
| 188 | char * td_err_string (errcode) |
| 189 | |
| 190 | DESCRIPTION |
| 191 | |
| 192 | Return the thread_db error string associated with errcode. If errcode |
| 193 | is unknown, then return a message. |
| 194 | |
| 195 | */ |
| 196 | |
| 197 | static char * |
| 198 | td_err_string (td_err_e errcode) |
| 199 | { |
| 200 | static struct string_map |
| 201 | td_err_table[] = |
| 202 | { |
| 203 | {TD_OK, "generic \"call succeeded\""}, |
| 204 | {TD_ERR, "generic error."}, |
| 205 | {TD_NOTHR, "no thread can be found to satisfy query"}, |
| 206 | {TD_NOSV, "no synch. variable can be found to satisfy query"}, |
| 207 | {TD_NOLWP, "no lwp can be found to satisfy query"}, |
| 208 | {TD_BADPH, "invalid process handle"}, |
| 209 | {TD_BADTH, "invalid thread handle"}, |
| 210 | {TD_BADSH, "invalid synchronization handle"}, |
| 211 | {TD_BADTA, "invalid thread agent"}, |
| 212 | {TD_BADKEY, "invalid key"}, |
| 213 | {TD_NOMSG, "td_thr_event_getmsg() called when there was no message"}, |
| 214 | {TD_NOFPREGS, "FPU register set not available for given thread"}, |
| 215 | {TD_NOLIBTHREAD, "application not linked with libthread"}, |
| 216 | {TD_NOEVENT, "requested event is not supported"}, |
| 217 | {TD_NOCAPAB, "capability not available"}, |
| 218 | {TD_DBERR, "Debugger service failed"}, |
| 219 | {TD_NOAPLIC, "Operation not applicable to"}, |
| 220 | {TD_NOTSD, "No thread specific data for this thread"}, |
| 221 | {TD_MALLOC, "Malloc failed"}, |
| 222 | {TD_PARTIALREG, "Only part of register set was written/read"}, |
| 223 | {TD_NOXREGS, "X register set not available for given thread"} |
| 224 | }; |
| 225 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
| 226 | int i; |
| 227 | static char buf[50]; |
| 228 | |
| 229 | for (i = 0; i < td_err_size; i++) |
| 230 | if (td_err_table[i].num == errcode) |
| 231 | return td_err_table[i].str; |
| 232 | |
| 233 | sprintf (buf, "Unknown thread_db error code: %d", errcode); |
| 234 | |
| 235 | return buf; |
| 236 | } |
| 237 | \f |
| 238 | /* |
| 239 | |
| 240 | LOCAL FUNCTION |
| 241 | |
| 242 | td_state_string - Convert a thread_db state code to a string |
| 243 | |
| 244 | SYNOPSIS |
| 245 | |
| 246 | char * td_state_string (statecode) |
| 247 | |
| 248 | DESCRIPTION |
| 249 | |
| 250 | Return the thread_db state string associated with statecode. If |
| 251 | statecode is unknown, then return a message. |
| 252 | |
| 253 | */ |
| 254 | |
| 255 | static char * |
| 256 | td_state_string (td_thr_state_e statecode) |
| 257 | { |
| 258 | static struct string_map |
| 259 | td_thr_state_table[] = |
| 260 | { |
| 261 | {TD_THR_ANY_STATE, "any state"}, |
| 262 | {TD_THR_UNKNOWN, "unknown"}, |
| 263 | {TD_THR_STOPPED, "stopped"}, |
| 264 | {TD_THR_RUN, "run"}, |
| 265 | {TD_THR_ACTIVE, "active"}, |
| 266 | {TD_THR_ZOMBIE, "zombie"}, |
| 267 | {TD_THR_SLEEP, "sleep"}, |
| 268 | {TD_THR_STOPPED_ASLEEP, "stopped asleep"} |
| 269 | }; |
| 270 | const int td_thr_state_table_size = sizeof td_thr_state_table / sizeof (struct string_map); |
| 271 | int i; |
| 272 | static char buf[50]; |
| 273 | |
| 274 | for (i = 0; i < td_thr_state_table_size; i++) |
| 275 | if (td_thr_state_table[i].num == statecode) |
| 276 | return td_thr_state_table[i].str; |
| 277 | |
| 278 | sprintf (buf, "Unknown thread_db state code: %d", statecode); |
| 279 | |
| 280 | return buf; |
| 281 | } |
| 282 | \f |
| 283 | /* |
| 284 | |
| 285 | LOCAL FUNCTION |
| 286 | |
| 287 | thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id. |
| 288 | |
| 289 | SYNOPSIS |
| 290 | |
| 291 | int thread_to_lwp (thread_id, default_lwp) |
| 292 | |
| 293 | DESCRIPTION |
| 294 | |
| 295 | This function converts a Posix or Solaris thread id to a lightweight |
| 296 | process id. If thread_id is non-existent, that's an error. If it's |
| 297 | an inactive thread, then we return default_lwp. |
| 298 | |
| 299 | NOTES |
| 300 | |
| 301 | This function probably shouldn't call error()... |
| 302 | |
| 303 | */ |
| 304 | |
| 305 | static int |
| 306 | thread_to_lwp (int thread_id, int default_lwp) |
| 307 | { |
| 308 | td_thrinfo_t ti; |
| 309 | td_thrhandle_t th; |
| 310 | td_err_e val; |
| 311 | |
| 312 | if (is_lwp (thread_id)) |
| 313 | return thread_id; /* It's already an LWP id */ |
| 314 | |
| 315 | /* It's a thread. Convert to lwp */ |
| 316 | |
| 317 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); |
| 318 | if (val == TD_NOTHR) |
| 319 | return -1; /* thread must have terminated */ |
| 320 | else if (val != TD_OK) |
| 321 | error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val)); |
| 322 | |
| 323 | val = p_td_thr_get_info (&th, &ti); |
| 324 | if (val == TD_NOTHR) |
| 325 | return -1; /* thread must have terminated */ |
| 326 | else if (val != TD_OK) |
| 327 | error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val)); |
| 328 | |
| 329 | if (ti.ti_state != TD_THR_ACTIVE) |
| 330 | { |
| 331 | if (default_lwp != -1) |
| 332 | return default_lwp; |
| 333 | error ("thread_to_lwp: thread state not active: %s", |
| 334 | td_state_string (ti.ti_state)); |
| 335 | } |
| 336 | |
| 337 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); |
| 338 | } |
| 339 | \f |
| 340 | /* |
| 341 | |
| 342 | LOCAL FUNCTION |
| 343 | |
| 344 | lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id. |
| 345 | |
| 346 | SYNOPSIS |
| 347 | |
| 348 | int lwp_to_thread (lwp_id) |
| 349 | |
| 350 | DESCRIPTION |
| 351 | |
| 352 | This function converts a lightweight process id to a Posix or Solaris |
| 353 | thread id. If thread_id is non-existent, that's an error. |
| 354 | |
| 355 | NOTES |
| 356 | |
| 357 | This function probably shouldn't call error()... |
| 358 | |
| 359 | */ |
| 360 | |
| 361 | static int |
| 362 | lwp_to_thread (int lwp) |
| 363 | { |
| 364 | td_thrinfo_t ti; |
| 365 | td_thrhandle_t th; |
| 366 | td_err_e val; |
| 367 | |
| 368 | if (is_thread (lwp)) |
| 369 | return lwp; /* It's already a thread id */ |
| 370 | |
| 371 | /* It's an lwp. Convert it to a thread id. */ |
| 372 | |
| 373 | if (!sol_thread_alive (lwp)) |
| 374 | return -1; /* defunct lwp */ |
| 375 | |
| 376 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); |
| 377 | if (val == TD_NOTHR) |
| 378 | return -1; /* thread must have terminated */ |
| 379 | else if (val != TD_OK) |
| 380 | error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val)); |
| 381 | |
| 382 | val = p_td_thr_validate (&th); |
| 383 | if (val == TD_NOTHR) |
| 384 | return lwp; /* libthread doesn't know about it; |
| 385 | just return lwp */ |
| 386 | else if (val != TD_OK) |
| 387 | error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val)); |
| 388 | |
| 389 | val = p_td_thr_get_info (&th, &ti); |
| 390 | if (val == TD_NOTHR) |
| 391 | return -1; /* thread must have terminated */ |
| 392 | else if (val != TD_OK) |
| 393 | error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val)); |
| 394 | |
| 395 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); |
| 396 | } |
| 397 | \f |
| 398 | /* |
| 399 | |
| 400 | LOCAL FUNCTION |
| 401 | |
| 402 | save_inferior_pid - Save inferior_pid on the cleanup list |
| 403 | restore_inferior_pid - Restore inferior_pid from the cleanup list |
| 404 | |
| 405 | SYNOPSIS |
| 406 | |
| 407 | struct cleanup *save_inferior_pid () |
| 408 | void restore_inferior_pid (int pid) |
| 409 | |
| 410 | DESCRIPTION |
| 411 | |
| 412 | These two functions act in unison to restore inferior_pid in |
| 413 | case of an error. |
| 414 | |
| 415 | NOTES |
| 416 | |
| 417 | inferior_pid is a global variable that needs to be changed by many of |
| 418 | these routines before calling functions in procfs.c. In order to |
| 419 | guarantee that inferior_pid gets restored (in case of errors), you |
| 420 | need to call save_inferior_pid before changing it. At the end of the |
| 421 | function, you should invoke do_cleanups to restore it. |
| 422 | |
| 423 | */ |
| 424 | |
| 425 | |
| 426 | static struct cleanup * |
| 427 | save_inferior_pid (void) |
| 428 | { |
| 429 | int *saved_pid = xmalloc (sizeof (int)); |
| 430 | *saved_pid = inferior_pid; |
| 431 | return make_cleanup (restore_inferior_pid, saved_pid); |
| 432 | } |
| 433 | |
| 434 | static void |
| 435 | restore_inferior_pid (void *data) |
| 436 | { |
| 437 | int *saved_pid = data; |
| 438 | inferior_pid = *saved_pid; |
| 439 | xfree (saved_pid); |
| 440 | } |
| 441 | \f |
| 442 | |
| 443 | /* Most target vector functions from here on actually just pass through to |
| 444 | procfs.c, as they don't need to do anything specific for threads. */ |
| 445 | |
| 446 | |
| 447 | /* ARGSUSED */ |
| 448 | static void |
| 449 | sol_thread_open (char *arg, int from_tty) |
| 450 | { |
| 451 | procfs_ops.to_open (arg, from_tty); |
| 452 | } |
| 453 | |
| 454 | /* Attach to process PID, then initialize for debugging it |
| 455 | and wait for the trace-trap that results from attaching. */ |
| 456 | |
| 457 | static void |
| 458 | sol_thread_attach (char *args, int from_tty) |
| 459 | { |
| 460 | procfs_ops.to_attach (args, from_tty); |
| 461 | |
| 462 | /* Must get symbols from solibs before libthread_db can run! */ |
| 463 | SOLIB_ADD ((char *) 0, from_tty, (struct target_ops *) 0); |
| 464 | |
| 465 | if (sol_thread_active) |
| 466 | { |
| 467 | printf_filtered ("sol-thread active.\n"); |
| 468 | main_ph.pid = inferior_pid; /* Save for xfer_memory */ |
| 469 | push_target (&sol_thread_ops); |
| 470 | inferior_pid = lwp_to_thread (inferior_pid); |
| 471 | if (inferior_pid == -1) |
| 472 | inferior_pid = main_ph.pid; |
| 473 | else |
| 474 | add_thread (inferior_pid); |
| 475 | } |
| 476 | /* XXX - might want to iterate over all the threads and register them. */ |
| 477 | } |
| 478 | |
| 479 | /* Take a program previously attached to and detaches it. |
| 480 | The program resumes execution and will no longer stop |
| 481 | on signals, etc. We'd better not have left any breakpoints |
| 482 | in the program or it'll die when it hits one. For this |
| 483 | to work, it may be necessary for the process to have been |
| 484 | previously attached. It *might* work if the program was |
| 485 | started via the normal ptrace (PTRACE_TRACEME). */ |
| 486 | |
| 487 | static void |
| 488 | sol_thread_detach (char *args, int from_tty) |
| 489 | { |
| 490 | inferior_pid = PIDGET (main_ph.pid); |
| 491 | unpush_target (&sol_thread_ops); |
| 492 | procfs_ops.to_detach (args, from_tty); |
| 493 | } |
| 494 | |
| 495 | /* Resume execution of process PID. If STEP is nozero, then |
| 496 | just single step it. If SIGNAL is nonzero, restart it with that |
| 497 | signal activated. We may have to convert pid from a thread-id to an LWP id |
| 498 | for procfs. */ |
| 499 | |
| 500 | static void |
| 501 | sol_thread_resume (int pid, int step, enum target_signal signo) |
| 502 | { |
| 503 | struct cleanup *old_chain; |
| 504 | |
| 505 | old_chain = save_inferior_pid (); |
| 506 | |
| 507 | inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); |
| 508 | if (inferior_pid == -1) |
| 509 | inferior_pid = procfs_first_available (); |
| 510 | |
| 511 | if (pid != -1) |
| 512 | { |
| 513 | int save_pid = pid; |
| 514 | |
| 515 | pid = thread_to_lwp (pid, -2); |
| 516 | if (pid == -2) /* Inactive thread */ |
| 517 | error ("This version of Solaris can't start inactive threads."); |
| 518 | if (info_verbose && pid == -1) |
| 519 | warning ("Specified thread %d seems to have terminated", |
| 520 | GET_THREAD (save_pid)); |
| 521 | } |
| 522 | |
| 523 | procfs_ops.to_resume (pid, step, signo); |
| 524 | |
| 525 | do_cleanups (old_chain); |
| 526 | } |
| 527 | |
| 528 | /* Wait for any threads to stop. We may have to convert PID from a thread id |
| 529 | to a LWP id, and vice versa on the way out. */ |
| 530 | |
| 531 | static int |
| 532 | sol_thread_wait (int pid, struct target_waitstatus *ourstatus) |
| 533 | { |
| 534 | int rtnval; |
| 535 | int save_pid; |
| 536 | struct cleanup *old_chain; |
| 537 | |
| 538 | save_pid = inferior_pid; |
| 539 | old_chain = save_inferior_pid (); |
| 540 | |
| 541 | inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); |
| 542 | if (inferior_pid == -1) |
| 543 | inferior_pid = procfs_first_available (); |
| 544 | |
| 545 | if (pid != -1) |
| 546 | { |
| 547 | int save_pid = pid; |
| 548 | |
| 549 | pid = thread_to_lwp (pid, -2); |
| 550 | if (pid == -2) /* Inactive thread */ |
| 551 | error ("This version of Solaris can't start inactive threads."); |
| 552 | if (info_verbose && pid == -1) |
| 553 | warning ("Specified thread %d seems to have terminated", |
| 554 | GET_THREAD (save_pid)); |
| 555 | } |
| 556 | |
| 557 | rtnval = procfs_ops.to_wait (pid, ourstatus); |
| 558 | |
| 559 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) |
| 560 | { |
| 561 | /* Map the LWP of interest back to the appropriate thread ID */ |
| 562 | rtnval = lwp_to_thread (rtnval); |
| 563 | if (rtnval == -1) |
| 564 | rtnval = save_pid; |
| 565 | |
| 566 | /* See if we have a new thread */ |
| 567 | if (is_thread (rtnval) |
| 568 | && rtnval != save_pid |
| 569 | && !in_thread_list (rtnval)) |
| 570 | { |
| 571 | printf_filtered ("[New %s]\n", target_pid_to_str (rtnval)); |
| 572 | add_thread (rtnval); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | /* During process initialization, we may get here without the thread package |
| 577 | being initialized, since that can only happen after we've found the shared |
| 578 | libs. */ |
| 579 | |
| 580 | do_cleanups (old_chain); |
| 581 | |
| 582 | return rtnval; |
| 583 | } |
| 584 | |
| 585 | static void |
| 586 | sol_thread_fetch_registers (int regno) |
| 587 | { |
| 588 | thread_t thread; |
| 589 | td_thrhandle_t thandle; |
| 590 | td_err_e val; |
| 591 | prgregset_t gregset; |
| 592 | prfpregset_t fpregset; |
| 593 | #if 0 |
| 594 | int xregsize; |
| 595 | caddr_t xregset; |
| 596 | #endif |
| 597 | |
| 598 | if (!is_thread (inferior_pid)) |
| 599 | { /* LWP: pass the request on to procfs.c */ |
| 600 | if (target_has_execution) |
| 601 | procfs_ops.to_fetch_registers (regno); |
| 602 | else |
| 603 | orig_core_ops.to_fetch_registers (regno); |
| 604 | return; |
| 605 | } |
| 606 | |
| 607 | /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ |
| 608 | |
| 609 | thread = GET_THREAD (inferior_pid); |
| 610 | |
| 611 | if (thread == 0) |
| 612 | error ("sol_thread_fetch_registers: thread == 0"); |
| 613 | |
| 614 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); |
| 615 | if (val != TD_OK) |
| 616 | error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s", |
| 617 | td_err_string (val)); |
| 618 | |
| 619 | /* Get the integer regs */ |
| 620 | |
| 621 | val = p_td_thr_getgregs (&thandle, gregset); |
| 622 | if (val != TD_OK |
| 623 | && val != TD_PARTIALREG) |
| 624 | error ("sol_thread_fetch_registers: td_thr_getgregs %s", |
| 625 | td_err_string (val)); |
| 626 | |
| 627 | /* For the sparc, TD_PARTIALREG means that only i0->i7, l0->l7, pc and sp |
| 628 | are saved (by a thread context switch). */ |
| 629 | |
| 630 | /* And, now the fp regs */ |
| 631 | |
| 632 | val = p_td_thr_getfpregs (&thandle, &fpregset); |
| 633 | if (val != TD_OK |
| 634 | && val != TD_NOFPREGS) |
| 635 | error ("sol_thread_fetch_registers: td_thr_getfpregs %s", |
| 636 | td_err_string (val)); |
| 637 | |
| 638 | /* Note that we must call supply_{g fp}regset *after* calling the td routines |
| 639 | because the td routines call ps_lget* which affect the values stored in the |
| 640 | registers array. */ |
| 641 | |
| 642 | supply_gregset ((gdb_gregset_t *) &gregset); |
| 643 | supply_fpregset ((gdb_fpregset_t *) &fpregset); |
| 644 | |
| 645 | #if 0 |
| 646 | /* thread_db doesn't seem to handle this right */ |
| 647 | val = td_thr_getxregsize (&thandle, &xregsize); |
| 648 | if (val != TD_OK && val != TD_NOXREGS) |
| 649 | error ("sol_thread_fetch_registers: td_thr_getxregsize %s", |
| 650 | td_err_string (val)); |
| 651 | |
| 652 | if (val == TD_OK) |
| 653 | { |
| 654 | xregset = alloca (xregsize); |
| 655 | val = td_thr_getxregs (&thandle, xregset); |
| 656 | if (val != TD_OK) |
| 657 | error ("sol_thread_fetch_registers: td_thr_getxregs %s", |
| 658 | td_err_string (val)); |
| 659 | } |
| 660 | #endif |
| 661 | } |
| 662 | |
| 663 | static void |
| 664 | sol_thread_store_registers (int regno) |
| 665 | { |
| 666 | thread_t thread; |
| 667 | td_thrhandle_t thandle; |
| 668 | td_err_e val; |
| 669 | prgregset_t gregset; |
| 670 | prfpregset_t fpregset; |
| 671 | #if 0 |
| 672 | int xregsize; |
| 673 | caddr_t xregset; |
| 674 | #endif |
| 675 | |
| 676 | if (!is_thread (inferior_pid)) |
| 677 | { /* LWP: pass the request on to procfs.c */ |
| 678 | procfs_ops.to_store_registers (regno); |
| 679 | return; |
| 680 | } |
| 681 | |
| 682 | /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ |
| 683 | |
| 684 | thread = GET_THREAD (inferior_pid); |
| 685 | |
| 686 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); |
| 687 | if (val != TD_OK) |
| 688 | error ("sol_thread_store_registers: td_ta_map_id2thr %s", |
| 689 | td_err_string (val)); |
| 690 | |
| 691 | if (regno != -1) |
| 692 | { /* Not writing all the regs */ |
| 693 | /* save new register value */ |
| 694 | char* old_value = (char*) alloca (REGISTER_SIZE); |
| 695 | memcpy (old_value, ®isters[REGISTER_BYTE (regno)], REGISTER_SIZE); |
| 696 | |
| 697 | val = p_td_thr_getgregs (&thandle, gregset); |
| 698 | if (val != TD_OK) |
| 699 | error ("sol_thread_store_registers: td_thr_getgregs %s", |
| 700 | td_err_string (val)); |
| 701 | val = p_td_thr_getfpregs (&thandle, &fpregset); |
| 702 | if (val != TD_OK) |
| 703 | error ("sol_thread_store_registers: td_thr_getfpregs %s", |
| 704 | td_err_string (val)); |
| 705 | |
| 706 | /* restore new register value */ |
| 707 | memcpy (®isters[REGISTER_BYTE (regno)], old_value, REGISTER_SIZE); |
| 708 | |
| 709 | #if 0 |
| 710 | /* thread_db doesn't seem to handle this right */ |
| 711 | val = td_thr_getxregsize (&thandle, &xregsize); |
| 712 | if (val != TD_OK && val != TD_NOXREGS) |
| 713 | error ("sol_thread_store_registers: td_thr_getxregsize %s", |
| 714 | td_err_string (val)); |
| 715 | |
| 716 | if (val == TD_OK) |
| 717 | { |
| 718 | xregset = alloca (xregsize); |
| 719 | val = td_thr_getxregs (&thandle, xregset); |
| 720 | if (val != TD_OK) |
| 721 | error ("sol_thread_store_registers: td_thr_getxregs %s", |
| 722 | td_err_string (val)); |
| 723 | } |
| 724 | #endif |
| 725 | } |
| 726 | |
| 727 | fill_gregset ((gdb_gregset_t *) &gregset, regno); |
| 728 | fill_fpregset ((gdb_fpregset_t *) &fpregset, regno); |
| 729 | |
| 730 | val = p_td_thr_setgregs (&thandle, gregset); |
| 731 | if (val != TD_OK) |
| 732 | error ("sol_thread_store_registers: td_thr_setgregs %s", |
| 733 | td_err_string (val)); |
| 734 | val = p_td_thr_setfpregs (&thandle, &fpregset); |
| 735 | if (val != TD_OK) |
| 736 | error ("sol_thread_store_registers: td_thr_setfpregs %s", |
| 737 | td_err_string (val)); |
| 738 | |
| 739 | #if 0 |
| 740 | /* thread_db doesn't seem to handle this right */ |
| 741 | val = td_thr_getxregsize (&thandle, &xregsize); |
| 742 | if (val != TD_OK && val != TD_NOXREGS) |
| 743 | error ("sol_thread_store_registers: td_thr_getxregsize %s", |
| 744 | td_err_string (val)); |
| 745 | |
| 746 | /* Should probably do something about writing the xregs here, but what are |
| 747 | they? */ |
| 748 | #endif |
| 749 | } |
| 750 | |
| 751 | /* Get ready to modify the registers array. On machines which store |
| 752 | individual registers, this doesn't need to do anything. On machines |
| 753 | which store all the registers in one fell swoop, this makes sure |
| 754 | that registers contains all the registers from the program being |
| 755 | debugged. */ |
| 756 | |
| 757 | static void |
| 758 | sol_thread_prepare_to_store (void) |
| 759 | { |
| 760 | procfs_ops.to_prepare_to_store (); |
| 761 | } |
| 762 | |
| 763 | /* Transfer LEN bytes between GDB address MYADDR and target address |
| 764 | MEMADDR. If DOWRITE is non-zero, transfer them to the target, |
| 765 | otherwise transfer them from the target. TARGET is unused. |
| 766 | |
| 767 | Returns the number of bytes transferred. */ |
| 768 | |
| 769 | static int |
| 770 | sol_thread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite, |
| 771 | struct mem_attrib *attrib, |
| 772 | struct target_ops *target) |
| 773 | { |
| 774 | int retval; |
| 775 | struct cleanup *old_chain; |
| 776 | |
| 777 | old_chain = save_inferior_pid (); |
| 778 | |
| 779 | if (is_thread (inferior_pid) || /* A thread */ |
| 780 | !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ |
| 781 | inferior_pid = procfs_first_available (); /* Find any live lwp. */ |
| 782 | /* Note: don't need to call switch_to_thread; we're just reading memory. */ |
| 783 | |
| 784 | if (target_has_execution) |
| 785 | retval = procfs_ops.to_xfer_memory (memaddr, myaddr, len, |
| 786 | dowrite, attrib, target); |
| 787 | else |
| 788 | retval = orig_core_ops.to_xfer_memory (memaddr, myaddr, len, |
| 789 | dowrite, attrib, target); |
| 790 | |
| 791 | do_cleanups (old_chain); |
| 792 | |
| 793 | return retval; |
| 794 | } |
| 795 | |
| 796 | /* Print status information about what we're accessing. */ |
| 797 | |
| 798 | static void |
| 799 | sol_thread_files_info (struct target_ops *ignore) |
| 800 | { |
| 801 | procfs_ops.to_files_info (ignore); |
| 802 | } |
| 803 | |
| 804 | static void |
| 805 | sol_thread_kill_inferior (void) |
| 806 | { |
| 807 | procfs_ops.to_kill (); |
| 808 | } |
| 809 | |
| 810 | static void |
| 811 | sol_thread_notice_signals (int pid) |
| 812 | { |
| 813 | procfs_ops.to_notice_signals (PIDGET (pid)); |
| 814 | } |
| 815 | |
| 816 | /* Fork an inferior process, and start debugging it with /proc. */ |
| 817 | |
| 818 | static void |
| 819 | sol_thread_create_inferior (char *exec_file, char *allargs, char **env) |
| 820 | { |
| 821 | procfs_ops.to_create_inferior (exec_file, allargs, env); |
| 822 | |
| 823 | if (sol_thread_active && inferior_pid != 0) |
| 824 | { |
| 825 | main_ph.pid = inferior_pid; /* Save for xfer_memory */ |
| 826 | |
| 827 | push_target (&sol_thread_ops); |
| 828 | |
| 829 | inferior_pid = lwp_to_thread (inferior_pid); |
| 830 | if (inferior_pid == -1) |
| 831 | inferior_pid = main_ph.pid; |
| 832 | |
| 833 | if (!in_thread_list (inferior_pid)) |
| 834 | add_thread (inferior_pid); |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | /* This routine is called whenever a new symbol table is read in, or when all |
| 839 | symbol tables are removed. libthread_db can only be initialized when it |
| 840 | finds the right variables in libthread.so. Since it's a shared library, |
| 841 | those variables don't show up until the library gets mapped and the symbol |
| 842 | table is read in. */ |
| 843 | |
| 844 | /* This new_objfile event is now managed by a chained function pointer. |
| 845 | * It is the callee's responsability to call the next client on the chain. |
| 846 | */ |
| 847 | |
| 848 | /* Saved pointer to previous owner of the new_objfile event. */ |
| 849 | static void (*target_new_objfile_chain) (struct objfile *); |
| 850 | |
| 851 | void |
| 852 | sol_thread_new_objfile (struct objfile *objfile) |
| 853 | { |
| 854 | td_err_e val; |
| 855 | |
| 856 | if (!objfile) |
| 857 | { |
| 858 | sol_thread_active = 0; |
| 859 | goto quit; |
| 860 | } |
| 861 | |
| 862 | /* don't do anything if init failed to resolve the libthread_db library */ |
| 863 | if (!procfs_suppress_run) |
| 864 | goto quit; |
| 865 | |
| 866 | /* Now, initialize the thread debugging library. This needs to be done after |
| 867 | the shared libraries are located because it needs information from the |
| 868 | user's thread library. */ |
| 869 | |
| 870 | val = p_td_init (); |
| 871 | if (val != TD_OK) |
| 872 | { |
| 873 | warning ("sol_thread_new_objfile: td_init: %s", td_err_string (val)); |
| 874 | goto quit; |
| 875 | } |
| 876 | |
| 877 | val = p_td_ta_new (&main_ph, &main_ta); |
| 878 | if (val == TD_NOLIBTHREAD) |
| 879 | goto quit; |
| 880 | else if (val != TD_OK) |
| 881 | { |
| 882 | warning ("sol_thread_new_objfile: td_ta_new: %s", td_err_string (val)); |
| 883 | goto quit; |
| 884 | } |
| 885 | |
| 886 | sol_thread_active = 1; |
| 887 | quit: |
| 888 | /* Call predecessor on chain, if any. */ |
| 889 | if (target_new_objfile_chain) |
| 890 | target_new_objfile_chain (objfile); |
| 891 | } |
| 892 | |
| 893 | /* Clean up after the inferior dies. */ |
| 894 | |
| 895 | static void |
| 896 | sol_thread_mourn_inferior (void) |
| 897 | { |
| 898 | unpush_target (&sol_thread_ops); |
| 899 | procfs_ops.to_mourn_inferior (); |
| 900 | } |
| 901 | |
| 902 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
| 903 | |
| 904 | static int |
| 905 | sol_thread_can_run (void) |
| 906 | { |
| 907 | return procfs_suppress_run; |
| 908 | } |
| 909 | |
| 910 | /* |
| 911 | |
| 912 | LOCAL FUNCTION |
| 913 | |
| 914 | sol_thread_alive - test thread for "aliveness" |
| 915 | |
| 916 | SYNOPSIS |
| 917 | |
| 918 | static bool sol_thread_alive (int pid); |
| 919 | |
| 920 | DESCRIPTION |
| 921 | |
| 922 | returns true if thread still active in inferior. |
| 923 | |
| 924 | */ |
| 925 | |
| 926 | static int |
| 927 | sol_thread_alive (int pid) |
| 928 | { |
| 929 | if (is_thread (pid)) /* non-kernel thread */ |
| 930 | { |
| 931 | td_err_e val; |
| 932 | td_thrhandle_t th; |
| 933 | |
| 934 | pid = GET_THREAD (pid); |
| 935 | if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
| 936 | return 0; /* thread not found */ |
| 937 | if ((val = p_td_thr_validate (&th)) != TD_OK) |
| 938 | return 0; /* thread not valid */ |
| 939 | return 1; /* known thread: return true */ |
| 940 | } |
| 941 | else |
| 942 | /* kernel thread (LWP): let procfs test it */ |
| 943 | { |
| 944 | if (target_has_execution) |
| 945 | return procfs_ops.to_thread_alive (pid); |
| 946 | else |
| 947 | return orig_core_ops.to_thread_alive (pid); |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | static void |
| 952 | sol_thread_stop (void) |
| 953 | { |
| 954 | procfs_ops.to_stop (); |
| 955 | } |
| 956 | \f |
| 957 | /* These routines implement the lower half of the thread_db interface. Ie: the |
| 958 | ps_* routines. */ |
| 959 | |
| 960 | /* Various versions of <proc_service.h> have slightly |
| 961 | different function prototypes. In particular, we have |
| 962 | |
| 963 | NEWER OLDER |
| 964 | struct ps_prochandle * const struct ps_prochandle * |
| 965 | void* char* |
| 966 | const void* char* |
| 967 | int size_t |
| 968 | |
| 969 | Which one you have depends on solaris version and what |
| 970 | patches you've applied. On the theory that there are |
| 971 | only two major variants, we have configure check the |
| 972 | prototype of ps_pdwrite (), and use that info to make |
| 973 | appropriate typedefs here. */ |
| 974 | |
| 975 | #ifdef PROC_SERVICE_IS_OLD |
| 976 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
| 977 | typedef char *gdb_ps_read_buf_t; |
| 978 | typedef char *gdb_ps_write_buf_t; |
| 979 | typedef int gdb_ps_size_t; |
| 980 | typedef paddr_t gdb_ps_addr_t; |
| 981 | #else |
| 982 | typedef struct ps_prochandle *gdb_ps_prochandle_t; |
| 983 | typedef void *gdb_ps_read_buf_t; |
| 984 | typedef const void *gdb_ps_write_buf_t; |
| 985 | typedef size_t gdb_ps_size_t; |
| 986 | typedef psaddr_t gdb_ps_addr_t; |
| 987 | #endif |
| 988 | |
| 989 | |
| 990 | /* The next four routines are called by thread_db to tell us to stop and stop |
| 991 | a particular process or lwp. Since GDB ensures that these are all stopped |
| 992 | by the time we call anything in thread_db, these routines need to do |
| 993 | nothing. */ |
| 994 | |
| 995 | /* Process stop */ |
| 996 | |
| 997 | ps_err_e |
| 998 | ps_pstop (gdb_ps_prochandle_t ph) |
| 999 | { |
| 1000 | return PS_OK; |
| 1001 | } |
| 1002 | |
| 1003 | /* Process continue */ |
| 1004 | |
| 1005 | ps_err_e |
| 1006 | ps_pcontinue (gdb_ps_prochandle_t ph) |
| 1007 | { |
| 1008 | return PS_OK; |
| 1009 | } |
| 1010 | |
| 1011 | /* LWP stop */ |
| 1012 | |
| 1013 | ps_err_e |
| 1014 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) |
| 1015 | { |
| 1016 | return PS_OK; |
| 1017 | } |
| 1018 | |
| 1019 | /* LWP continue */ |
| 1020 | |
| 1021 | ps_err_e |
| 1022 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) |
| 1023 | { |
| 1024 | return PS_OK; |
| 1025 | } |
| 1026 | |
| 1027 | /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
| 1028 | |
| 1029 | ps_err_e |
| 1030 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, |
| 1031 | const char *ld_symbol_name, gdb_ps_addr_t * ld_symbol_addr) |
| 1032 | { |
| 1033 | struct minimal_symbol *ms; |
| 1034 | |
| 1035 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); |
| 1036 | |
| 1037 | if (!ms) |
| 1038 | return PS_NOSYM; |
| 1039 | |
| 1040 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); |
| 1041 | |
| 1042 | return PS_OK; |
| 1043 | } |
| 1044 | |
| 1045 | /* Common routine for reading and writing memory. */ |
| 1046 | |
| 1047 | static ps_err_e |
| 1048 | rw_common (int dowrite, const struct ps_prochandle *ph, gdb_ps_addr_t addr, |
| 1049 | char *buf, int size) |
| 1050 | { |
| 1051 | struct cleanup *old_chain; |
| 1052 | |
| 1053 | old_chain = save_inferior_pid (); |
| 1054 | |
| 1055 | if (is_thread (inferior_pid) || /* A thread */ |
| 1056 | !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ |
| 1057 | inferior_pid = procfs_first_available (); /* Find any live lwp. */ |
| 1058 | /* Note: don't need to call switch_to_thread; we're just reading memory. */ |
| 1059 | |
| 1060 | #if defined (__sparcv9) |
| 1061 | /* For Sparc64 cross Sparc32, make sure the address has not been |
| 1062 | accidentally sign-extended (or whatever) to beyond 32 bits. */ |
| 1063 | if (bfd_get_arch_size (exec_bfd) == 32) |
| 1064 | addr &= 0xffffffff; |
| 1065 | #endif |
| 1066 | |
| 1067 | while (size > 0) |
| 1068 | { |
| 1069 | int cc; |
| 1070 | |
| 1071 | /* FIXME: passing 0 as attrib argument. */ |
| 1072 | if (target_has_execution) |
| 1073 | cc = procfs_ops.to_xfer_memory (addr, buf, size, |
| 1074 | dowrite, 0, &procfs_ops); |
| 1075 | else |
| 1076 | cc = orig_core_ops.to_xfer_memory (addr, buf, size, |
| 1077 | dowrite, 0, &core_ops); |
| 1078 | |
| 1079 | if (cc < 0) |
| 1080 | { |
| 1081 | if (dowrite == 0) |
| 1082 | print_sys_errmsg ("rw_common (): read", errno); |
| 1083 | else |
| 1084 | print_sys_errmsg ("rw_common (): write", errno); |
| 1085 | |
| 1086 | do_cleanups (old_chain); |
| 1087 | |
| 1088 | return PS_ERR; |
| 1089 | } |
| 1090 | else if (cc == 0) |
| 1091 | { |
| 1092 | if (dowrite == 0) |
| 1093 | warning ("rw_common (): unable to read at addr 0x%lx", |
| 1094 | (long) addr); |
| 1095 | else |
| 1096 | warning ("rw_common (): unable to write at addr 0x%lx", |
| 1097 | (long) addr); |
| 1098 | |
| 1099 | do_cleanups (old_chain); |
| 1100 | |
| 1101 | return PS_ERR; |
| 1102 | } |
| 1103 | |
| 1104 | size -= cc; |
| 1105 | buf += cc; |
| 1106 | } |
| 1107 | |
| 1108 | do_cleanups (old_chain); |
| 1109 | |
| 1110 | return PS_OK; |
| 1111 | } |
| 1112 | |
| 1113 | /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
| 1114 | |
| 1115 | ps_err_e |
| 1116 | ps_pdread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
| 1117 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
| 1118 | { |
| 1119 | return rw_common (0, ph, addr, buf, size); |
| 1120 | } |
| 1121 | |
| 1122 | /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
| 1123 | |
| 1124 | ps_err_e |
| 1125 | ps_pdwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
| 1126 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
| 1127 | { |
| 1128 | return rw_common (1, ph, addr, (char *) buf, size); |
| 1129 | } |
| 1130 | |
| 1131 | /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
| 1132 | |
| 1133 | ps_err_e |
| 1134 | ps_ptread (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
| 1135 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
| 1136 | { |
| 1137 | return rw_common (0, ph, addr, buf, size); |
| 1138 | } |
| 1139 | |
| 1140 | /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
| 1141 | |
| 1142 | ps_err_e |
| 1143 | ps_ptwrite (gdb_ps_prochandle_t ph, gdb_ps_addr_t addr, |
| 1144 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
| 1145 | { |
| 1146 | return rw_common (1, ph, addr, (char *) buf, size); |
| 1147 | } |
| 1148 | |
| 1149 | /* Get integer regs for LWP */ |
| 1150 | |
| 1151 | ps_err_e |
| 1152 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| 1153 | prgregset_t gregset) |
| 1154 | { |
| 1155 | struct cleanup *old_chain; |
| 1156 | |
| 1157 | old_chain = save_inferior_pid (); |
| 1158 | |
| 1159 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1160 | |
| 1161 | if (target_has_execution) |
| 1162 | procfs_ops.to_fetch_registers (-1); |
| 1163 | else |
| 1164 | orig_core_ops.to_fetch_registers (-1); |
| 1165 | fill_gregset ((gdb_gregset_t *) gregset, -1); |
| 1166 | |
| 1167 | do_cleanups (old_chain); |
| 1168 | |
| 1169 | return PS_OK; |
| 1170 | } |
| 1171 | |
| 1172 | /* Set integer regs for LWP */ |
| 1173 | |
| 1174 | ps_err_e |
| 1175 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| 1176 | const prgregset_t gregset) |
| 1177 | { |
| 1178 | struct cleanup *old_chain; |
| 1179 | |
| 1180 | old_chain = save_inferior_pid (); |
| 1181 | |
| 1182 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1183 | |
| 1184 | supply_gregset ((gdb_gregset_t *) gregset); |
| 1185 | if (target_has_execution) |
| 1186 | procfs_ops.to_store_registers (-1); |
| 1187 | else |
| 1188 | orig_core_ops.to_store_registers (-1); |
| 1189 | |
| 1190 | do_cleanups (old_chain); |
| 1191 | |
| 1192 | return PS_OK; |
| 1193 | } |
| 1194 | |
| 1195 | /* Log a message (sends to gdb_stderr). */ |
| 1196 | |
| 1197 | void |
| 1198 | ps_plog (const char *fmt,...) |
| 1199 | { |
| 1200 | va_list args; |
| 1201 | |
| 1202 | va_start (args, fmt); |
| 1203 | |
| 1204 | vfprintf_filtered (gdb_stderr, fmt, args); |
| 1205 | } |
| 1206 | |
| 1207 | /* Get size of extra register set. Currently a noop. */ |
| 1208 | |
| 1209 | ps_err_e |
| 1210 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) |
| 1211 | { |
| 1212 | #if 0 |
| 1213 | int lwp_fd; |
| 1214 | int regsize; |
| 1215 | ps_err_e val; |
| 1216 | |
| 1217 | val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| 1218 | if (val != PS_OK) |
| 1219 | return val; |
| 1220 | |
| 1221 | if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) |
| 1222 | { |
| 1223 | if (errno == EINVAL) |
| 1224 | return PS_NOFREGS; /* XXX Wrong code, but this is the closest |
| 1225 | thing in proc_service.h */ |
| 1226 | |
| 1227 | print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); |
| 1228 | return PS_ERR; |
| 1229 | } |
| 1230 | #endif |
| 1231 | |
| 1232 | return PS_OK; |
| 1233 | } |
| 1234 | |
| 1235 | /* Get extra register set. Currently a noop. */ |
| 1236 | |
| 1237 | ps_err_e |
| 1238 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) |
| 1239 | { |
| 1240 | #if 0 |
| 1241 | int lwp_fd; |
| 1242 | ps_err_e val; |
| 1243 | |
| 1244 | val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| 1245 | if (val != PS_OK) |
| 1246 | return val; |
| 1247 | |
| 1248 | if (ioctl (lwp_fd, PIOCGXREG, xregset)) |
| 1249 | { |
| 1250 | print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); |
| 1251 | return PS_ERR; |
| 1252 | } |
| 1253 | #endif |
| 1254 | |
| 1255 | return PS_OK; |
| 1256 | } |
| 1257 | |
| 1258 | /* Set extra register set. Currently a noop. */ |
| 1259 | |
| 1260 | ps_err_e |
| 1261 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) |
| 1262 | { |
| 1263 | #if 0 |
| 1264 | int lwp_fd; |
| 1265 | ps_err_e val; |
| 1266 | |
| 1267 | val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| 1268 | if (val != PS_OK) |
| 1269 | return val; |
| 1270 | |
| 1271 | if (ioctl (lwp_fd, PIOCSXREG, xregset)) |
| 1272 | { |
| 1273 | print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); |
| 1274 | return PS_ERR; |
| 1275 | } |
| 1276 | #endif |
| 1277 | |
| 1278 | return PS_OK; |
| 1279 | } |
| 1280 | |
| 1281 | /* Get floating-point regs for LWP */ |
| 1282 | |
| 1283 | ps_err_e |
| 1284 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| 1285 | prfpregset_t * fpregset) |
| 1286 | { |
| 1287 | struct cleanup *old_chain; |
| 1288 | |
| 1289 | old_chain = save_inferior_pid (); |
| 1290 | |
| 1291 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1292 | |
| 1293 | if (target_has_execution) |
| 1294 | procfs_ops.to_fetch_registers (-1); |
| 1295 | else |
| 1296 | orig_core_ops.to_fetch_registers (-1); |
| 1297 | fill_fpregset ((gdb_fpregset_t *) fpregset, -1); |
| 1298 | |
| 1299 | do_cleanups (old_chain); |
| 1300 | |
| 1301 | return PS_OK; |
| 1302 | } |
| 1303 | |
| 1304 | /* Set floating-point regs for LWP */ |
| 1305 | |
| 1306 | ps_err_e |
| 1307 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| 1308 | const prfpregset_t * fpregset) |
| 1309 | { |
| 1310 | struct cleanup *old_chain; |
| 1311 | |
| 1312 | old_chain = save_inferior_pid (); |
| 1313 | |
| 1314 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1315 | |
| 1316 | supply_fpregset ((gdb_fpregset_t *) fpregset); |
| 1317 | if (target_has_execution) |
| 1318 | procfs_ops.to_store_registers (-1); |
| 1319 | else |
| 1320 | orig_core_ops.to_store_registers (-1); |
| 1321 | |
| 1322 | do_cleanups (old_chain); |
| 1323 | |
| 1324 | return PS_OK; |
| 1325 | } |
| 1326 | |
| 1327 | #ifdef PR_MODEL_LP64 |
| 1328 | /* Identify process as 32-bit or 64-bit. |
| 1329 | At the moment I'm using bfd to do this. |
| 1330 | There might be a more solaris-specific (eg. procfs) method, |
| 1331 | but this ought to work. */ |
| 1332 | |
| 1333 | ps_err_e |
| 1334 | ps_pdmodel (gdb_ps_prochandle_t ph, int *data_model) |
| 1335 | { |
| 1336 | if (exec_bfd == 0) |
| 1337 | *data_model = PR_MODEL_UNKNOWN; |
| 1338 | else if (bfd_get_arch_size (exec_bfd) == 32) |
| 1339 | *data_model = PR_MODEL_ILP32; |
| 1340 | else |
| 1341 | *data_model = PR_MODEL_LP64; |
| 1342 | |
| 1343 | return PS_OK; |
| 1344 | } |
| 1345 | #endif /* PR_MODEL_LP64 */ |
| 1346 | |
| 1347 | #ifdef TM_I386SOL2_H |
| 1348 | |
| 1349 | /* Reads the local descriptor table of a LWP. */ |
| 1350 | |
| 1351 | ps_err_e |
| 1352 | ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| 1353 | struct ssd *pldt) |
| 1354 | { |
| 1355 | /* NOTE: only used on Solaris, therefore OK to refer to procfs.c */ |
| 1356 | extern struct ssd *procfs_find_LDT_entry (int); |
| 1357 | struct ssd *ret; |
| 1358 | |
| 1359 | /* FIXME: can't I get the process ID from the prochandle or something? |
| 1360 | */ |
| 1361 | |
| 1362 | if (inferior_pid <= 0 || lwpid <= 0) |
| 1363 | return PS_BADLID; |
| 1364 | |
| 1365 | ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_pid))); |
| 1366 | if (ret) |
| 1367 | { |
| 1368 | memcpy (pldt, ret, sizeof (struct ssd)); |
| 1369 | return PS_OK; |
| 1370 | } |
| 1371 | else /* LDT not found. */ |
| 1372 | return PS_ERR; |
| 1373 | } |
| 1374 | #endif /* TM_I386SOL2_H */ |
| 1375 | \f |
| 1376 | /* Convert a pid to printable form. */ |
| 1377 | |
| 1378 | char * |
| 1379 | solaris_pid_to_str (int pid) |
| 1380 | { |
| 1381 | static char buf[100]; |
| 1382 | |
| 1383 | /* in case init failed to resolve the libthread_db library */ |
| 1384 | if (!procfs_suppress_run) |
| 1385 | return procfs_pid_to_str (pid); |
| 1386 | |
| 1387 | if (is_thread (pid)) |
| 1388 | { |
| 1389 | int lwp; |
| 1390 | |
| 1391 | lwp = thread_to_lwp (pid, -2); |
| 1392 | |
| 1393 | if (lwp == -1) |
| 1394 | sprintf (buf, "Thread %d (defunct)", GET_THREAD (pid)); |
| 1395 | else if (lwp != -2) |
| 1396 | sprintf (buf, "Thread %d (LWP %d)", GET_THREAD (pid), GET_LWP (lwp)); |
| 1397 | else |
| 1398 | sprintf (buf, "Thread %d ", GET_THREAD (pid)); |
| 1399 | } |
| 1400 | else if (GET_LWP (pid) != 0) |
| 1401 | sprintf (buf, "LWP %d ", GET_LWP (pid)); |
| 1402 | else |
| 1403 | sprintf (buf, "process %d ", PIDGET (pid)); |
| 1404 | |
| 1405 | return buf; |
| 1406 | } |
| 1407 | \f |
| 1408 | |
| 1409 | /* Worker bee for find_new_threads |
| 1410 | Callback function that gets called once per USER thread (i.e., not |
| 1411 | kernel) thread. */ |
| 1412 | |
| 1413 | static int |
| 1414 | sol_find_new_threads_callback (const td_thrhandle_t *th, void *ignored) |
| 1415 | { |
| 1416 | td_err_e retval; |
| 1417 | td_thrinfo_t ti; |
| 1418 | int pid; |
| 1419 | |
| 1420 | if ((retval = p_td_thr_get_info (th, &ti)) != TD_OK) |
| 1421 | { |
| 1422 | return -1; |
| 1423 | } |
| 1424 | pid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_pid)); |
| 1425 | if (!in_thread_list (pid)) |
| 1426 | add_thread (pid); |
| 1427 | |
| 1428 | return 0; |
| 1429 | } |
| 1430 | |
| 1431 | static void |
| 1432 | sol_find_new_threads (void) |
| 1433 | { |
| 1434 | /* don't do anything if init failed to resolve the libthread_db library */ |
| 1435 | if (!procfs_suppress_run) |
| 1436 | return; |
| 1437 | |
| 1438 | if (inferior_pid == -1) |
| 1439 | { |
| 1440 | printf_filtered ("No process.\n"); |
| 1441 | return; |
| 1442 | } |
| 1443 | procfs_find_new_threads (); /* first find new kernel threads. */ |
| 1444 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
| 1445 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 1446 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 1447 | } |
| 1448 | |
| 1449 | static void |
| 1450 | sol_core_open (char *filename, int from_tty) |
| 1451 | { |
| 1452 | orig_core_ops.to_open (filename, from_tty); |
| 1453 | } |
| 1454 | |
| 1455 | static void |
| 1456 | sol_core_close (int quitting) |
| 1457 | { |
| 1458 | orig_core_ops.to_close (quitting); |
| 1459 | } |
| 1460 | |
| 1461 | static void |
| 1462 | sol_core_detach (char *args, int from_tty) |
| 1463 | { |
| 1464 | unpush_target (&core_ops); |
| 1465 | orig_core_ops.to_detach (args, from_tty); |
| 1466 | } |
| 1467 | |
| 1468 | static void |
| 1469 | sol_core_files_info (struct target_ops *t) |
| 1470 | { |
| 1471 | orig_core_ops.to_files_info (t); |
| 1472 | } |
| 1473 | |
| 1474 | /* Worker bee for info sol-thread command. This is a callback function that |
| 1475 | gets called once for each Solaris thread (ie. not kernel thread) in the |
| 1476 | inferior. Print anything interesting that we can think of. */ |
| 1477 | |
| 1478 | static int |
| 1479 | info_cb (const td_thrhandle_t *th, void *s) |
| 1480 | { |
| 1481 | td_err_e ret; |
| 1482 | td_thrinfo_t ti; |
| 1483 | |
| 1484 | if ((ret = p_td_thr_get_info (th, &ti)) == TD_OK) |
| 1485 | { |
| 1486 | printf_filtered ("%s thread #%d, lwp %d, ", |
| 1487 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", |
| 1488 | ti.ti_tid, ti.ti_lid); |
| 1489 | switch (ti.ti_state) |
| 1490 | { |
| 1491 | default: |
| 1492 | case TD_THR_UNKNOWN: |
| 1493 | printf_filtered ("<unknown state>"); |
| 1494 | break; |
| 1495 | case TD_THR_STOPPED: |
| 1496 | printf_filtered ("(stopped)"); |
| 1497 | break; |
| 1498 | case TD_THR_RUN: |
| 1499 | printf_filtered ("(run) "); |
| 1500 | break; |
| 1501 | case TD_THR_ACTIVE: |
| 1502 | printf_filtered ("(active) "); |
| 1503 | break; |
| 1504 | case TD_THR_ZOMBIE: |
| 1505 | printf_filtered ("(zombie) "); |
| 1506 | break; |
| 1507 | case TD_THR_SLEEP: |
| 1508 | printf_filtered ("(asleep) "); |
| 1509 | break; |
| 1510 | case TD_THR_STOPPED_ASLEEP: |
| 1511 | printf_filtered ("(stopped asleep)"); |
| 1512 | break; |
| 1513 | } |
| 1514 | /* Print thr_create start function: */ |
| 1515 | if (ti.ti_startfunc != 0) |
| 1516 | { |
| 1517 | struct minimal_symbol *msym; |
| 1518 | msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc); |
| 1519 | if (msym) |
| 1520 | printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym)); |
| 1521 | else |
| 1522 | printf_filtered (" startfunc: 0x%s\n", paddr (ti.ti_startfunc)); |
| 1523 | } |
| 1524 | |
| 1525 | /* If thread is asleep, print function that went to sleep: */ |
| 1526 | if (ti.ti_state == TD_THR_SLEEP) |
| 1527 | { |
| 1528 | struct minimal_symbol *msym; |
| 1529 | msym = lookup_minimal_symbol_by_pc (ti.ti_pc); |
| 1530 | if (msym) |
| 1531 | printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym)); |
| 1532 | else |
| 1533 | printf_filtered (" - Sleep func: 0x%s\n", paddr (ti.ti_startfunc)); |
| 1534 | } |
| 1535 | |
| 1536 | /* Wrap up line, if necessary */ |
| 1537 | if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) |
| 1538 | printf_filtered ("\n"); /* don't you hate counting newlines? */ |
| 1539 | } |
| 1540 | else |
| 1541 | warning ("info sol-thread: failed to get info for thread."); |
| 1542 | |
| 1543 | return 0; |
| 1544 | } |
| 1545 | |
| 1546 | /* List some state about each Solaris user thread in the inferior. */ |
| 1547 | |
| 1548 | static void |
| 1549 | info_solthreads (char *args, int from_tty) |
| 1550 | { |
| 1551 | p_td_ta_thr_iter (main_ta, info_cb, args, |
| 1552 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 1553 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 1554 | } |
| 1555 | |
| 1556 | static int |
| 1557 | ignore (CORE_ADDR addr, char *contents) |
| 1558 | { |
| 1559 | return 0; |
| 1560 | } |
| 1561 | |
| 1562 | |
| 1563 | static void |
| 1564 | init_sol_thread_ops (void) |
| 1565 | { |
| 1566 | sol_thread_ops.to_shortname = "solaris-threads"; |
| 1567 | sol_thread_ops.to_longname = "Solaris threads and pthread."; |
| 1568 | sol_thread_ops.to_doc = "Solaris threads and pthread support."; |
| 1569 | sol_thread_ops.to_open = sol_thread_open; |
| 1570 | sol_thread_ops.to_close = 0; |
| 1571 | sol_thread_ops.to_attach = sol_thread_attach; |
| 1572 | sol_thread_ops.to_detach = sol_thread_detach; |
| 1573 | sol_thread_ops.to_resume = sol_thread_resume; |
| 1574 | sol_thread_ops.to_wait = sol_thread_wait; |
| 1575 | sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; |
| 1576 | sol_thread_ops.to_store_registers = sol_thread_store_registers; |
| 1577 | sol_thread_ops.to_prepare_to_store = sol_thread_prepare_to_store; |
| 1578 | sol_thread_ops.to_xfer_memory = sol_thread_xfer_memory; |
| 1579 | sol_thread_ops.to_files_info = sol_thread_files_info; |
| 1580 | sol_thread_ops.to_insert_breakpoint = memory_insert_breakpoint; |
| 1581 | sol_thread_ops.to_remove_breakpoint = memory_remove_breakpoint; |
| 1582 | sol_thread_ops.to_terminal_init = terminal_init_inferior; |
| 1583 | sol_thread_ops.to_terminal_inferior = terminal_inferior; |
| 1584 | sol_thread_ops.to_terminal_ours_for_output = terminal_ours_for_output; |
| 1585 | sol_thread_ops.to_terminal_ours = terminal_ours; |
| 1586 | sol_thread_ops.to_terminal_info = child_terminal_info; |
| 1587 | sol_thread_ops.to_kill = sol_thread_kill_inferior; |
| 1588 | sol_thread_ops.to_load = 0; |
| 1589 | sol_thread_ops.to_lookup_symbol = 0; |
| 1590 | sol_thread_ops.to_create_inferior = sol_thread_create_inferior; |
| 1591 | sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
| 1592 | sol_thread_ops.to_can_run = sol_thread_can_run; |
| 1593 | sol_thread_ops.to_notice_signals = sol_thread_notice_signals; |
| 1594 | sol_thread_ops.to_thread_alive = sol_thread_alive; |
| 1595 | sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
| 1596 | sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
| 1597 | sol_thread_ops.to_stop = sol_thread_stop; |
| 1598 | sol_thread_ops.to_stratum = process_stratum; |
| 1599 | sol_thread_ops.to_has_all_memory = 1; |
| 1600 | sol_thread_ops.to_has_memory = 1; |
| 1601 | sol_thread_ops.to_has_stack = 1; |
| 1602 | sol_thread_ops.to_has_registers = 1; |
| 1603 | sol_thread_ops.to_has_execution = 1; |
| 1604 | sol_thread_ops.to_has_thread_control = tc_none; |
| 1605 | sol_thread_ops.to_sections = 0; |
| 1606 | sol_thread_ops.to_sections_end = 0; |
| 1607 | sol_thread_ops.to_magic = OPS_MAGIC; |
| 1608 | } |
| 1609 | |
| 1610 | |
| 1611 | static void |
| 1612 | init_sol_core_ops (void) |
| 1613 | { |
| 1614 | sol_core_ops.to_shortname = "solaris-core"; |
| 1615 | sol_core_ops.to_longname = "Solaris core threads and pthread."; |
| 1616 | sol_core_ops.to_doc = "Solaris threads and pthread support for core files."; |
| 1617 | sol_core_ops.to_open = sol_core_open; |
| 1618 | sol_core_ops.to_close = sol_core_close; |
| 1619 | sol_core_ops.to_attach = sol_thread_attach; |
| 1620 | sol_core_ops.to_detach = sol_core_detach; |
| 1621 | /* sol_core_ops.to_resume = 0; */ |
| 1622 | /* sol_core_ops.to_wait = 0; */ |
| 1623 | sol_core_ops.to_fetch_registers = sol_thread_fetch_registers; |
| 1624 | /* sol_core_ops.to_store_registers = 0; */ |
| 1625 | /* sol_core_ops.to_prepare_to_store = 0; */ |
| 1626 | sol_core_ops.to_xfer_memory = sol_thread_xfer_memory; |
| 1627 | sol_core_ops.to_files_info = sol_core_files_info; |
| 1628 | sol_core_ops.to_insert_breakpoint = ignore; |
| 1629 | sol_core_ops.to_remove_breakpoint = ignore; |
| 1630 | /* sol_core_ops.to_terminal_init = 0; */ |
| 1631 | /* sol_core_ops.to_terminal_inferior = 0; */ |
| 1632 | /* sol_core_ops.to_terminal_ours_for_output = 0; */ |
| 1633 | /* sol_core_ops.to_terminal_ours = 0; */ |
| 1634 | /* sol_core_ops.to_terminal_info = 0; */ |
| 1635 | /* sol_core_ops.to_kill = 0; */ |
| 1636 | /* sol_core_ops.to_load = 0; */ |
| 1637 | /* sol_core_ops.to_lookup_symbol = 0; */ |
| 1638 | sol_core_ops.to_create_inferior = sol_thread_create_inferior; |
| 1639 | sol_core_ops.to_stratum = core_stratum; |
| 1640 | sol_core_ops.to_has_all_memory = 0; |
| 1641 | sol_core_ops.to_has_memory = 1; |
| 1642 | sol_core_ops.to_has_stack = 1; |
| 1643 | sol_core_ops.to_has_registers = 1; |
| 1644 | sol_core_ops.to_has_execution = 0; |
| 1645 | sol_core_ops.to_has_thread_control = tc_none; |
| 1646 | sol_core_ops.to_thread_alive = sol_thread_alive; |
| 1647 | sol_core_ops.to_pid_to_str = solaris_pid_to_str; |
| 1648 | /* On Solaris/x86, when debugging a threaded core file from process <n>, |
| 1649 | the following causes "info threads" to produce "procfs: couldn't find pid |
| 1650 | <n> in procinfo list" where <n> is the pid of the process that produced |
| 1651 | the core file. Disable it for now. */ |
| 1652 | /* sol_core_ops.to_find_new_threads = sol_find_new_threads; */ |
| 1653 | sol_core_ops.to_sections = 0; |
| 1654 | sol_core_ops.to_sections_end = 0; |
| 1655 | sol_core_ops.to_magic = OPS_MAGIC; |
| 1656 | } |
| 1657 | |
| 1658 | /* we suppress the call to add_target of core_ops in corelow because |
| 1659 | if there are two targets in the stratum core_stratum, find_core_target |
| 1660 | won't know which one to return. see corelow.c for an additonal |
| 1661 | comment on coreops_suppress_target. */ |
| 1662 | int coreops_suppress_target = 1; |
| 1663 | |
| 1664 | void |
| 1665 | _initialize_sol_thread (void) |
| 1666 | { |
| 1667 | void *dlhandle; |
| 1668 | |
| 1669 | init_sol_thread_ops (); |
| 1670 | init_sol_core_ops (); |
| 1671 | |
| 1672 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); |
| 1673 | if (!dlhandle) |
| 1674 | goto die; |
| 1675 | |
| 1676 | #define resolve(X) \ |
| 1677 | if (!(p_##X = dlsym (dlhandle, #X))) \ |
| 1678 | goto die; |
| 1679 | |
| 1680 | resolve (td_log); |
| 1681 | resolve (td_ta_new); |
| 1682 | resolve (td_ta_delete); |
| 1683 | resolve (td_init); |
| 1684 | resolve (td_ta_get_ph); |
| 1685 | resolve (td_ta_get_nthreads); |
| 1686 | resolve (td_ta_tsd_iter); |
| 1687 | resolve (td_ta_thr_iter); |
| 1688 | resolve (td_thr_validate); |
| 1689 | resolve (td_thr_tsd); |
| 1690 | resolve (td_thr_get_info); |
| 1691 | resolve (td_thr_getfpregs); |
| 1692 | resolve (td_thr_getxregsize); |
| 1693 | resolve (td_thr_getxregs); |
| 1694 | resolve (td_thr_sigsetmask); |
| 1695 | resolve (td_thr_setprio); |
| 1696 | resolve (td_thr_setsigpending); |
| 1697 | resolve (td_thr_setfpregs); |
| 1698 | resolve (td_thr_setxregs); |
| 1699 | resolve (td_ta_map_id2thr); |
| 1700 | resolve (td_ta_map_lwp2thr); |
| 1701 | resolve (td_thr_getgregs); |
| 1702 | resolve (td_thr_setgregs); |
| 1703 | |
| 1704 | add_target (&sol_thread_ops); |
| 1705 | |
| 1706 | procfs_suppress_run = 1; |
| 1707 | |
| 1708 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
| 1709 | "Show info on Solaris user threads.\n", &maintenanceinfolist); |
| 1710 | |
| 1711 | memcpy (&orig_core_ops, &core_ops, sizeof (struct target_ops)); |
| 1712 | memcpy (&core_ops, &sol_core_ops, sizeof (struct target_ops)); |
| 1713 | add_target (&core_ops); |
| 1714 | |
| 1715 | /* Hook into new_objfile notification. */ |
| 1716 | target_new_objfile_chain = target_new_objfile_hook; |
| 1717 | target_new_objfile_hook = sol_thread_new_objfile; |
| 1718 | return; |
| 1719 | |
| 1720 | die: |
| 1721 | |
| 1722 | fprintf_unfiltered (gdb_stderr, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); |
| 1723 | |
| 1724 | if (dlhandle) |
| 1725 | dlclose (dlhandle); |
| 1726 | |
| 1727 | /* allow the user to debug non-threaded core files */ |
| 1728 | add_target (&core_ops); |
| 1729 | |
| 1730 | return; |
| 1731 | } |