| 1 | /* Low level interface for debugging Solaris threads for GDB, the GNU debugger. |
| 2 | Copyright 1996, 1997, 1998 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | /* This module implements a sort of half target that sits between the |
| 21 | machine-independent parts of GDB and the /proc interface (procfs.c) to |
| 22 | provide access to the Solaris user-mode thread implementation. |
| 23 | |
| 24 | Solaris threads are true user-mode threads, which are invoked via the thr_* |
| 25 | and pthread_* (native and Posix respectivly) interfaces. These are mostly |
| 26 | implemented in user-space, with all thread context kept in various |
| 27 | structures that live in the user's heap. These should not be confused with |
| 28 | lightweight processes (LWPs), which are implemented by the kernel, and |
| 29 | scheduled without explicit intervention by the process. |
| 30 | |
| 31 | Just to confuse things a little, Solaris threads (both native and Posix) are |
| 32 | actually implemented using LWPs. In general, there are going to be more |
| 33 | threads than LWPs. There is no fixed correspondence between a thread and an |
| 34 | LWP. When a thread wants to run, it gets scheduled onto the first available |
| 35 | LWP and can therefore migrate from one LWP to another as time goes on. A |
| 36 | sleeping thread may not be associated with an LWP at all! |
| 37 | |
| 38 | To make it possible to mess with threads, Sun provides a library called |
| 39 | libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't |
| 40 | have a published interface). This interface has an upper part, which it |
| 41 | provides, and a lower part which I provide. The upper part consists of the |
| 42 | td_* routines, which allow me to find all the threads, query their state, |
| 43 | etc... The lower part consists of all of the ps_*, which are used by the |
| 44 | td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc... |
| 45 | The ps_* routines actually do most of their work by calling functions in |
| 46 | procfs.c. */ |
| 47 | |
| 48 | #include "defs.h" |
| 49 | |
| 50 | /* Undefine gregset_t and fpregset_t to avoid conflict with defs in xm file. */ |
| 51 | |
| 52 | #ifdef gregset_t |
| 53 | #undef gregset_t |
| 54 | #endif |
| 55 | |
| 56 | #ifdef fpregset_t |
| 57 | #undef fpregset_t |
| 58 | #endif |
| 59 | |
| 60 | #include <thread.h> |
| 61 | #include <proc_service.h> |
| 62 | #include <thread_db.h> |
| 63 | #include "gdbthread.h" |
| 64 | #include "target.h" |
| 65 | #include "inferior.h" |
| 66 | #include <fcntl.h> |
| 67 | #include <unistd.h> |
| 68 | #include <sys/stat.h> |
| 69 | #include <dlfcn.h> |
| 70 | #include "gdbcmd.h" |
| 71 | |
| 72 | extern struct target_ops sol_thread_ops; /* Forward declaration */ |
| 73 | extern struct target_ops sol_core_ops; /* Forward declaration */ |
| 74 | |
| 75 | /* place to store core_ops before we overwrite it */ |
| 76 | static struct target_ops orig_core_ops; |
| 77 | |
| 78 | extern int procfs_suppress_run; |
| 79 | extern struct target_ops procfs_ops; /* target vector for procfs.c */ |
| 80 | extern struct target_ops core_ops; /* target vector for corelow.c */ |
| 81 | extern char *procfs_pid_to_str PARAMS ((int pid)); |
| 82 | |
| 83 | /* Note that these prototypes differ slightly from those used in procfs.c |
| 84 | for of two reasons. One, we can't use gregset_t, as that's got a whole |
| 85 | different meaning under Solaris (also, see above). Two, we can't use the |
| 86 | pointer form here as these are actually arrays of ints (for Sparc's at |
| 87 | least), and are automatically coerced into pointers to ints when used as |
| 88 | parameters. That makes it impossible to avoid a compiler warning when |
| 89 | passing pr{g fp}regset_t's from a parameter to an argument of one of |
| 90 | these functions. */ |
| 91 | |
| 92 | extern void supply_gregset PARAMS ((const prgregset_t)); |
| 93 | extern void fill_gregset PARAMS ((prgregset_t, int)); |
| 94 | extern void supply_fpregset PARAMS ((const prfpregset_t)); |
| 95 | extern void fill_fpregset PARAMS ((prfpregset_t, int)); |
| 96 | |
| 97 | /* This struct is defined by us, but mainly used for the proc_service interface. |
| 98 | We don't have much use for it, except as a handy place to get a real pid |
| 99 | for memory accesses. */ |
| 100 | |
| 101 | struct ps_prochandle |
| 102 | { |
| 103 | pid_t pid; |
| 104 | }; |
| 105 | |
| 106 | struct string_map |
| 107 | { |
| 108 | int num; |
| 109 | char *str; |
| 110 | }; |
| 111 | |
| 112 | static struct ps_prochandle main_ph; |
| 113 | static td_thragent_t *main_ta; |
| 114 | static int sol_thread_active = 0; |
| 115 | |
| 116 | static struct cleanup * save_inferior_pid PARAMS ((void)); |
| 117 | static void restore_inferior_pid PARAMS ((int pid)); |
| 118 | static char *td_err_string PARAMS ((td_err_e errcode)); |
| 119 | static char *td_state_string PARAMS ((td_thr_state_e statecode)); |
| 120 | static int thread_to_lwp PARAMS ((int thread_id, int default_lwp)); |
| 121 | static void sol_thread_resume PARAMS ((int pid, int step, |
| 122 | enum target_signal signo)); |
| 123 | static int lwp_to_thread PARAMS ((int lwp)); |
| 124 | static int sol_thread_alive PARAMS ((int pid)); |
| 125 | static void sol_core_close PARAMS ((int quitting)); |
| 126 | |
| 127 | #define THREAD_FLAG 0x80000000 |
| 128 | #define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0) |
| 129 | #define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0) |
| 130 | #define GET_LWP(LWP_ID) (TIDGET(LWP_ID)) |
| 131 | #define GET_THREAD(THREAD_ID) (((THREAD_ID) >> 16) & 0x7fff) |
| 132 | #define BUILD_LWP(LWP_ID, PID) ((LWP_ID) << 16 | (PID)) |
| 133 | #define BUILD_THREAD(THREAD_ID, PID) (THREAD_FLAG | BUILD_LWP (THREAD_ID, PID)) |
| 134 | |
| 135 | /* Pointers to routines from lithread_db resolved by dlopen() */ |
| 136 | |
| 137 | static void |
| 138 | (*p_td_log) (const int on_off); |
| 139 | static td_err_e |
| 140 | (*p_td_ta_new) (const struct ps_prochandle *ph_p, td_thragent_t **ta_pp); |
| 141 | static td_err_e |
| 142 | (*p_td_ta_delete) (td_thragent_t *ta_p); |
| 143 | static td_err_e |
| 144 | (*p_td_init) (void); |
| 145 | static td_err_e |
| 146 | (*p_td_ta_get_ph) (const td_thragent_t *ta_p, struct ps_prochandle **ph_pp); |
| 147 | static td_err_e |
| 148 | (*p_td_ta_get_nthreads) (const td_thragent_t *ta_p, int *nthread_p); |
| 149 | static td_err_e |
| 150 | (*p_td_ta_tsd_iter) (const td_thragent_t *ta_p, td_key_iter_f *cb, void *cbdata_p); |
| 151 | static td_err_e |
| 152 | (*p_td_ta_thr_iter) (const td_thragent_t *ta_p, td_thr_iter_f *cb, void *cbdata_p, td_thr_state_e state, |
| 153 | int ti_pri, sigset_t *ti_sigmask_p, unsigned ti_user_flags); |
| 154 | static td_err_e |
| 155 | (*p_td_thr_validate) (const td_thrhandle_t *th_p); |
| 156 | static td_err_e |
| 157 | (*p_td_thr_tsd) (const td_thrhandle_t *th_p, const thread_key_t key, void **data_pp); |
| 158 | static td_err_e |
| 159 | (*p_td_thr_get_info) (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p); |
| 160 | static td_err_e |
| 161 | (*p_td_thr_getfpregs) (const td_thrhandle_t *th_p, prfpregset_t *fpregset); |
| 162 | static td_err_e |
| 163 | (*p_td_thr_getxregsize) (const td_thrhandle_t *th_p, int *xregsize); |
| 164 | static td_err_e |
| 165 | (*p_td_thr_getxregs) (const td_thrhandle_t *th_p, const caddr_t xregset); |
| 166 | static td_err_e |
| 167 | (*p_td_thr_sigsetmask) (const td_thrhandle_t *th_p, const sigset_t ti_sigmask); |
| 168 | static td_err_e |
| 169 | (*p_td_thr_setprio) (const td_thrhandle_t *th_p, const int ti_pri); |
| 170 | static td_err_e |
| 171 | (*p_td_thr_setsigpending) (const td_thrhandle_t *th_p, const uchar_t ti_pending_flag, const sigset_t ti_pending); |
| 172 | static td_err_e |
| 173 | (*p_td_thr_setfpregs) (const td_thrhandle_t *th_p, const prfpregset_t *fpregset); |
| 174 | static td_err_e |
| 175 | (*p_td_thr_setxregs) (const td_thrhandle_t *th_p, const caddr_t xregset); |
| 176 | static td_err_e |
| 177 | (*p_td_ta_map_id2thr) (const td_thragent_t *ta_p, thread_t tid, td_thrhandle_t *th_p); |
| 178 | static td_err_e |
| 179 | (*p_td_ta_map_lwp2thr) (const td_thragent_t *ta_p, lwpid_t lwpid, td_thrhandle_t *th_p); |
| 180 | static td_err_e |
| 181 | (*p_td_thr_getgregs) (const td_thrhandle_t *th_p, prgregset_t regset); |
| 182 | static td_err_e |
| 183 | (*p_td_thr_setgregs) (const td_thrhandle_t *th_p, const prgregset_t regset); |
| 184 | \f |
| 185 | /* |
| 186 | |
| 187 | LOCAL FUNCTION |
| 188 | |
| 189 | td_err_string - Convert a thread_db error code to a string |
| 190 | |
| 191 | SYNOPSIS |
| 192 | |
| 193 | char * td_err_string (errcode) |
| 194 | |
| 195 | DESCRIPTION |
| 196 | |
| 197 | Return the thread_db error string associated with errcode. If errcode |
| 198 | is unknown, then return a message. |
| 199 | |
| 200 | */ |
| 201 | |
| 202 | static char * |
| 203 | td_err_string (errcode) |
| 204 | td_err_e errcode; |
| 205 | { |
| 206 | static struct string_map |
| 207 | td_err_table[] = { |
| 208 | {TD_OK, "generic \"call succeeded\""}, |
| 209 | {TD_ERR, "generic error."}, |
| 210 | {TD_NOTHR, "no thread can be found to satisfy query"}, |
| 211 | {TD_NOSV, "no synch. variable can be found to satisfy query"}, |
| 212 | {TD_NOLWP, "no lwp can be found to satisfy query"}, |
| 213 | {TD_BADPH, "invalid process handle"}, |
| 214 | {TD_BADTH, "invalid thread handle"}, |
| 215 | {TD_BADSH, "invalid synchronization handle"}, |
| 216 | {TD_BADTA, "invalid thread agent"}, |
| 217 | {TD_BADKEY, "invalid key"}, |
| 218 | {TD_NOMSG, "td_thr_event_getmsg() called when there was no message"}, |
| 219 | {TD_NOFPREGS, "FPU register set not available for given thread"}, |
| 220 | {TD_NOLIBTHREAD, "application not linked with libthread"}, |
| 221 | {TD_NOEVENT, "requested event is not supported"}, |
| 222 | {TD_NOCAPAB, "capability not available"}, |
| 223 | {TD_DBERR, "Debugger service failed"}, |
| 224 | {TD_NOAPLIC, "Operation not applicable to"}, |
| 225 | {TD_NOTSD, "No thread specific data for this thread"}, |
| 226 | {TD_MALLOC, "Malloc failed"}, |
| 227 | {TD_PARTIALREG, "Only part of register set was writen/read"}, |
| 228 | {TD_NOXREGS, "X register set not available for given thread"} |
| 229 | }; |
| 230 | const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
| 231 | int i; |
| 232 | static char buf[50]; |
| 233 | |
| 234 | for (i = 0; i < td_err_size; i++) |
| 235 | if (td_err_table[i].num == errcode) |
| 236 | return td_err_table[i].str; |
| 237 | |
| 238 | sprintf (buf, "Unknown thread_db error code: %d", errcode); |
| 239 | |
| 240 | return buf; |
| 241 | } |
| 242 | \f |
| 243 | /* |
| 244 | |
| 245 | LOCAL FUNCTION |
| 246 | |
| 247 | td_state_string - Convert a thread_db state code to a string |
| 248 | |
| 249 | SYNOPSIS |
| 250 | |
| 251 | char * td_state_string (statecode) |
| 252 | |
| 253 | DESCRIPTION |
| 254 | |
| 255 | Return the thread_db state string associated with statecode. If |
| 256 | statecode is unknown, then return a message. |
| 257 | |
| 258 | */ |
| 259 | |
| 260 | static char * |
| 261 | td_state_string (statecode) |
| 262 | td_thr_state_e statecode; |
| 263 | { |
| 264 | static struct string_map |
| 265 | td_thr_state_table[] = { |
| 266 | {TD_THR_ANY_STATE, "any state"}, |
| 267 | {TD_THR_UNKNOWN, "unknown"}, |
| 268 | {TD_THR_STOPPED, "stopped"}, |
| 269 | {TD_THR_RUN, "run"}, |
| 270 | {TD_THR_ACTIVE, "active"}, |
| 271 | {TD_THR_ZOMBIE, "zombie"}, |
| 272 | {TD_THR_SLEEP, "sleep"}, |
| 273 | {TD_THR_STOPPED_ASLEEP, "stopped asleep"} |
| 274 | }; |
| 275 | const int td_thr_state_table_size = sizeof td_thr_state_table / sizeof (struct string_map); |
| 276 | int i; |
| 277 | static char buf[50]; |
| 278 | |
| 279 | for (i = 0; i < td_thr_state_table_size; i++) |
| 280 | if (td_thr_state_table[i].num == statecode) |
| 281 | return td_thr_state_table[i].str; |
| 282 | |
| 283 | sprintf (buf, "Unknown thread_db state code: %d", statecode); |
| 284 | |
| 285 | return buf; |
| 286 | } |
| 287 | \f |
| 288 | /* |
| 289 | |
| 290 | LOCAL FUNCTION |
| 291 | |
| 292 | thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id. |
| 293 | |
| 294 | SYNOPSIS |
| 295 | |
| 296 | int thread_to_lwp (thread_id, default_lwp) |
| 297 | |
| 298 | DESCRIPTION |
| 299 | |
| 300 | This function converts a Posix or Solaris thread id to a lightweight |
| 301 | process id. If thread_id is non-existent, that's an error. If it's |
| 302 | an inactive thread, then we return default_lwp. |
| 303 | |
| 304 | NOTES |
| 305 | |
| 306 | This function probably shouldn't call error()... |
| 307 | |
| 308 | */ |
| 309 | |
| 310 | static int |
| 311 | thread_to_lwp (thread_id, default_lwp) |
| 312 | int thread_id; |
| 313 | int default_lwp; |
| 314 | { |
| 315 | td_thrinfo_t ti; |
| 316 | td_thrhandle_t th; |
| 317 | td_err_e val; |
| 318 | |
| 319 | if (is_lwp (thread_id)) |
| 320 | return thread_id; /* It's already an LWP id */ |
| 321 | |
| 322 | /* It's a thread. Convert to lwp */ |
| 323 | |
| 324 | val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); |
| 325 | if (val == TD_NOTHR) |
| 326 | return -1; /* thread must have terminated */ |
| 327 | else if (val != TD_OK) |
| 328 | error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val)); |
| 329 | |
| 330 | val = p_td_thr_get_info (&th, &ti); |
| 331 | if (val == TD_NOTHR) |
| 332 | return -1; /* thread must have terminated */ |
| 333 | else if (val != TD_OK) |
| 334 | error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val)); |
| 335 | |
| 336 | if (ti.ti_state != TD_THR_ACTIVE) |
| 337 | { |
| 338 | if (default_lwp != -1) |
| 339 | return default_lwp; |
| 340 | error ("thread_to_lwp: thread state not active: %s", |
| 341 | td_state_string (ti.ti_state)); |
| 342 | } |
| 343 | |
| 344 | return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); |
| 345 | } |
| 346 | \f |
| 347 | /* |
| 348 | |
| 349 | LOCAL FUNCTION |
| 350 | |
| 351 | lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id. |
| 352 | |
| 353 | SYNOPSIS |
| 354 | |
| 355 | int lwp_to_thread (lwp_id) |
| 356 | |
| 357 | DESCRIPTION |
| 358 | |
| 359 | This function converts a lightweight process id to a Posix or Solaris |
| 360 | thread id. If thread_id is non-existent, that's an error. |
| 361 | |
| 362 | NOTES |
| 363 | |
| 364 | This function probably shouldn't call error()... |
| 365 | |
| 366 | */ |
| 367 | |
| 368 | static int |
| 369 | lwp_to_thread (lwp) |
| 370 | int lwp; |
| 371 | { |
| 372 | td_thrinfo_t ti; |
| 373 | td_thrhandle_t th; |
| 374 | td_err_e val; |
| 375 | |
| 376 | if (is_thread (lwp)) |
| 377 | return lwp; /* It's already a thread id */ |
| 378 | |
| 379 | /* It's an lwp. Convert it to a thread id. */ |
| 380 | |
| 381 | if (!sol_thread_alive (lwp)) |
| 382 | return -1; /* defunct lwp */ |
| 383 | |
| 384 | val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); |
| 385 | if (val == TD_NOTHR) |
| 386 | return -1; /* thread must have terminated */ |
| 387 | else if (val != TD_OK) |
| 388 | error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val)); |
| 389 | |
| 390 | val = p_td_thr_validate (&th); |
| 391 | if (val == TD_NOTHR) |
| 392 | return lwp; /* libthread doesn't know about it, just return lwp */ |
| 393 | else if (val != TD_OK) |
| 394 | error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val)); |
| 395 | |
| 396 | val = p_td_thr_get_info (&th, &ti); |
| 397 | if (val == TD_NOTHR) |
| 398 | return -1; /* thread must have terminated */ |
| 399 | else if (val != TD_OK) |
| 400 | error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val)); |
| 401 | |
| 402 | return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); |
| 403 | } |
| 404 | \f |
| 405 | /* |
| 406 | |
| 407 | LOCAL FUNCTION |
| 408 | |
| 409 | save_inferior_pid - Save inferior_pid on the cleanup list |
| 410 | restore_inferior_pid - Restore inferior_pid from the cleanup list |
| 411 | |
| 412 | SYNOPSIS |
| 413 | |
| 414 | struct cleanup *save_inferior_pid () |
| 415 | void restore_inferior_pid (int pid) |
| 416 | |
| 417 | DESCRIPTION |
| 418 | |
| 419 | These two functions act in unison to restore inferior_pid in |
| 420 | case of an error. |
| 421 | |
| 422 | NOTES |
| 423 | |
| 424 | inferior_pid is a global variable that needs to be changed by many of |
| 425 | these routines before calling functions in procfs.c. In order to |
| 426 | guarantee that inferior_pid gets restored (in case of errors), you |
| 427 | need to call save_inferior_pid before changing it. At the end of the |
| 428 | function, you should invoke do_cleanups to restore it. |
| 429 | |
| 430 | */ |
| 431 | |
| 432 | |
| 433 | static struct cleanup * |
| 434 | save_inferior_pid () |
| 435 | { |
| 436 | return make_cleanup (restore_inferior_pid, inferior_pid); |
| 437 | } |
| 438 | |
| 439 | static void |
| 440 | restore_inferior_pid (pid) |
| 441 | int pid; |
| 442 | { |
| 443 | inferior_pid = pid; |
| 444 | } |
| 445 | \f |
| 446 | |
| 447 | /* Most target vector functions from here on actually just pass through to |
| 448 | procfs.c, as they don't need to do anything specific for threads. */ |
| 449 | |
| 450 | |
| 451 | /* ARGSUSED */ |
| 452 | static void |
| 453 | sol_thread_open (arg, from_tty) |
| 454 | char *arg; |
| 455 | int from_tty; |
| 456 | { |
| 457 | procfs_ops.to_open (arg, from_tty); |
| 458 | } |
| 459 | |
| 460 | /* Attach to process PID, then initialize for debugging it |
| 461 | and wait for the trace-trap that results from attaching. */ |
| 462 | |
| 463 | static void |
| 464 | sol_thread_attach (args, from_tty) |
| 465 | char *args; |
| 466 | int from_tty; |
| 467 | { |
| 468 | procfs_ops.to_attach (args, from_tty); |
| 469 | /* Must get symbols from solibs before libthread_db can run! */ |
| 470 | SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0); |
| 471 | if (sol_thread_active) |
| 472 | { |
| 473 | printf_filtered ("sol-thread active.\n"); |
| 474 | main_ph.pid = inferior_pid; /* Save for xfer_memory */ |
| 475 | push_target (&sol_thread_ops); |
| 476 | inferior_pid = lwp_to_thread (inferior_pid); |
| 477 | if (inferior_pid == -1) |
| 478 | inferior_pid = main_ph.pid; |
| 479 | else |
| 480 | add_thread (inferior_pid); |
| 481 | } |
| 482 | /* XXX - might want to iterate over all the threads and register them. */ |
| 483 | } |
| 484 | |
| 485 | /* Take a program previously attached to and detaches it. |
| 486 | The program resumes execution and will no longer stop |
| 487 | on signals, etc. We'd better not have left any breakpoints |
| 488 | in the program or it'll die when it hits one. For this |
| 489 | to work, it may be necessary for the process to have been |
| 490 | previously attached. It *might* work if the program was |
| 491 | started via the normal ptrace (PTRACE_TRACEME). */ |
| 492 | |
| 493 | static void |
| 494 | sol_thread_detach (args, from_tty) |
| 495 | char *args; |
| 496 | int from_tty; |
| 497 | { |
| 498 | unpush_target (&sol_thread_ops); |
| 499 | procfs_ops.to_detach (args, from_tty); |
| 500 | } |
| 501 | |
| 502 | /* Resume execution of process PID. If STEP is nozero, then |
| 503 | just single step it. If SIGNAL is nonzero, restart it with that |
| 504 | signal activated. We may have to convert pid from a thread-id to an LWP id |
| 505 | for procfs. */ |
| 506 | |
| 507 | static void |
| 508 | sol_thread_resume (pid, step, signo) |
| 509 | int pid; |
| 510 | int step; |
| 511 | enum target_signal signo; |
| 512 | { |
| 513 | struct cleanup *old_chain; |
| 514 | |
| 515 | old_chain = save_inferior_pid (); |
| 516 | |
| 517 | inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); |
| 518 | if (inferior_pid == -1) |
| 519 | inferior_pid = procfs_first_available (); |
| 520 | |
| 521 | if (pid != -1) |
| 522 | { |
| 523 | int save_pid = pid; |
| 524 | |
| 525 | pid = thread_to_lwp (pid, -2); |
| 526 | if (pid == -2) /* Inactive thread */ |
| 527 | error ("This version of Solaris can't start inactive threads."); |
| 528 | if (info_verbose && pid == -1) |
| 529 | warning ("Specified thread %d seems to have terminated", |
| 530 | GET_THREAD (save_pid)); |
| 531 | } |
| 532 | |
| 533 | procfs_ops.to_resume (pid, step, signo); |
| 534 | |
| 535 | do_cleanups (old_chain); |
| 536 | } |
| 537 | |
| 538 | /* Wait for any threads to stop. We may have to convert PID from a thread id |
| 539 | to a LWP id, and vice versa on the way out. */ |
| 540 | |
| 541 | static int |
| 542 | sol_thread_wait (pid, ourstatus) |
| 543 | int pid; |
| 544 | struct target_waitstatus *ourstatus; |
| 545 | { |
| 546 | int rtnval; |
| 547 | int save_pid; |
| 548 | struct cleanup *old_chain; |
| 549 | |
| 550 | save_pid = inferior_pid; |
| 551 | old_chain = save_inferior_pid (); |
| 552 | |
| 553 | inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); |
| 554 | if (inferior_pid == -1) |
| 555 | inferior_pid = procfs_first_available (); |
| 556 | |
| 557 | if (pid != -1) |
| 558 | { |
| 559 | int save_pid = pid; |
| 560 | |
| 561 | pid = thread_to_lwp (pid, -2); |
| 562 | if (pid == -2) /* Inactive thread */ |
| 563 | error ("This version of Solaris can't start inactive threads."); |
| 564 | if (info_verbose && pid == -1) |
| 565 | warning ("Specified thread %d seems to have terminated", |
| 566 | GET_THREAD (save_pid)); |
| 567 | } |
| 568 | |
| 569 | rtnval = procfs_ops.to_wait (pid, ourstatus); |
| 570 | |
| 571 | if (ourstatus->kind != TARGET_WAITKIND_EXITED) |
| 572 | { |
| 573 | /* Map the LWP of interest back to the appropriate thread ID */ |
| 574 | rtnval = lwp_to_thread (rtnval); |
| 575 | if (rtnval == -1) |
| 576 | rtnval = save_pid; |
| 577 | |
| 578 | /* See if we have a new thread */ |
| 579 | if (is_thread (rtnval) |
| 580 | && rtnval != save_pid |
| 581 | && !in_thread_list (rtnval)) |
| 582 | { |
| 583 | printf_filtered ("[New %s]\n", target_pid_to_str (rtnval)); |
| 584 | add_thread (rtnval); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /* During process initialization, we may get here without the thread package |
| 589 | being initialized, since that can only happen after we've found the shared |
| 590 | libs. */ |
| 591 | |
| 592 | do_cleanups (old_chain); |
| 593 | |
| 594 | return rtnval; |
| 595 | } |
| 596 | |
| 597 | static void |
| 598 | sol_thread_fetch_registers (regno) |
| 599 | int regno; |
| 600 | { |
| 601 | thread_t thread; |
| 602 | td_thrhandle_t thandle; |
| 603 | td_err_e val; |
| 604 | prgregset_t gregset; |
| 605 | prfpregset_t fpregset; |
| 606 | #if 0 |
| 607 | int xregsize; |
| 608 | caddr_t xregset; |
| 609 | #endif |
| 610 | |
| 611 | if (!is_thread (inferior_pid)) |
| 612 | { /* LWP: pass the request on to procfs.c */ |
| 613 | if (target_has_execution) |
| 614 | procfs_ops.to_fetch_registers (regno); |
| 615 | else |
| 616 | orig_core_ops.to_fetch_registers (regno); |
| 617 | return; |
| 618 | } |
| 619 | |
| 620 | /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ |
| 621 | |
| 622 | thread = GET_THREAD (inferior_pid); |
| 623 | |
| 624 | if (thread == 0) |
| 625 | error ("sol_thread_fetch_registers: thread == 0"); |
| 626 | |
| 627 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); |
| 628 | if (val != TD_OK) |
| 629 | error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s", |
| 630 | td_err_string (val)); |
| 631 | |
| 632 | /* Get the integer regs */ |
| 633 | |
| 634 | val = p_td_thr_getgregs (&thandle, gregset); |
| 635 | if (val != TD_OK |
| 636 | && val != TD_PARTIALREG) |
| 637 | error ("sol_thread_fetch_registers: td_thr_getgregs %s", |
| 638 | td_err_string (val)); |
| 639 | |
| 640 | /* For the sparc, TD_PARTIALREG means that only i0->i7, l0->l7, pc and sp |
| 641 | are saved (by a thread context switch). */ |
| 642 | |
| 643 | /* And, now the fp regs */ |
| 644 | |
| 645 | val = p_td_thr_getfpregs (&thandle, &fpregset); |
| 646 | if (val != TD_OK |
| 647 | && val != TD_NOFPREGS) |
| 648 | error ("sol_thread_fetch_registers: td_thr_getfpregs %s", |
| 649 | td_err_string (val)); |
| 650 | |
| 651 | /* Note that we must call supply_{g fp}regset *after* calling the td routines |
| 652 | because the td routines call ps_lget* which affect the values stored in the |
| 653 | registers array. */ |
| 654 | |
| 655 | supply_gregset (gregset); |
| 656 | supply_fpregset (fpregset); |
| 657 | |
| 658 | #if 0 |
| 659 | /* thread_db doesn't seem to handle this right */ |
| 660 | val = td_thr_getxregsize (&thandle, &xregsize); |
| 661 | if (val != TD_OK && val != TD_NOXREGS) |
| 662 | error ("sol_thread_fetch_registers: td_thr_getxregsize %s", |
| 663 | td_err_string (val)); |
| 664 | |
| 665 | if (val == TD_OK) |
| 666 | { |
| 667 | xregset = alloca (xregsize); |
| 668 | val = td_thr_getxregs (&thandle, xregset); |
| 669 | if (val != TD_OK) |
| 670 | error ("sol_thread_fetch_registers: td_thr_getxregs %s", |
| 671 | td_err_string (val)); |
| 672 | } |
| 673 | #endif |
| 674 | } |
| 675 | |
| 676 | static void |
| 677 | sol_thread_store_registers (regno) |
| 678 | int regno; |
| 679 | { |
| 680 | thread_t thread; |
| 681 | td_thrhandle_t thandle; |
| 682 | td_err_e val; |
| 683 | prgregset_t regset; |
| 684 | prfpregset_t fpregset; |
| 685 | #if 0 |
| 686 | int xregsize; |
| 687 | caddr_t xregset; |
| 688 | #endif |
| 689 | |
| 690 | if (!is_thread (inferior_pid)) |
| 691 | { /* LWP: pass the request on to procfs.c */ |
| 692 | procfs_ops.to_store_registers (regno); |
| 693 | return; |
| 694 | } |
| 695 | |
| 696 | /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ |
| 697 | |
| 698 | thread = GET_THREAD (inferior_pid); |
| 699 | |
| 700 | val = p_td_ta_map_id2thr (main_ta, thread, &thandle); |
| 701 | if (val != TD_OK) |
| 702 | error ("sol_thread_store_registers: td_ta_map_id2thr %s", |
| 703 | td_err_string (val)); |
| 704 | |
| 705 | if (regno != -1) |
| 706 | { /* Not writing all the regs */ |
| 707 | /* save new register value */ |
| 708 | char old_value[REGISTER_SIZE]; |
| 709 | memcpy(old_value, & registers[REGISTER_BYTE(regno)], REGISTER_SIZE); |
| 710 | |
| 711 | val = p_td_thr_getgregs (&thandle, regset); |
| 712 | if (val != TD_OK) |
| 713 | error ("sol_thread_store_registers: td_thr_getgregs %s", |
| 714 | td_err_string (val)); |
| 715 | val = p_td_thr_getfpregs (&thandle, &fpregset); |
| 716 | if (val != TD_OK) |
| 717 | error ("sol_thread_store_registers: td_thr_getfpregs %s", |
| 718 | td_err_string (val)); |
| 719 | |
| 720 | /* restore new register value */ |
| 721 | memcpy(& registers[REGISTER_BYTE(regno)], old_value, REGISTER_SIZE); |
| 722 | |
| 723 | #if 0 |
| 724 | /* thread_db doesn't seem to handle this right */ |
| 725 | val = td_thr_getxregsize (&thandle, &xregsize); |
| 726 | if (val != TD_OK && val != TD_NOXREGS) |
| 727 | error ("sol_thread_store_registers: td_thr_getxregsize %s", |
| 728 | td_err_string (val)); |
| 729 | |
| 730 | if (val == TD_OK) |
| 731 | { |
| 732 | xregset = alloca (xregsize); |
| 733 | val = td_thr_getxregs (&thandle, xregset); |
| 734 | if (val != TD_OK) |
| 735 | error ("sol_thread_store_registers: td_thr_getxregs %s", |
| 736 | td_err_string (val)); |
| 737 | } |
| 738 | #endif |
| 739 | } |
| 740 | |
| 741 | fill_gregset (regset, regno); |
| 742 | fill_fpregset (fpregset, regno); |
| 743 | |
| 744 | val = p_td_thr_setgregs (&thandle, regset); |
| 745 | if (val != TD_OK) |
| 746 | error ("sol_thread_store_registers: td_thr_setgregs %s", |
| 747 | td_err_string (val)); |
| 748 | val = p_td_thr_setfpregs (&thandle, &fpregset); |
| 749 | if (val != TD_OK) |
| 750 | error ("sol_thread_store_registers: td_thr_setfpregs %s", |
| 751 | td_err_string (val)); |
| 752 | |
| 753 | #if 0 |
| 754 | /* thread_db doesn't seem to handle this right */ |
| 755 | val = td_thr_getxregsize (&thandle, &xregsize); |
| 756 | if (val != TD_OK && val != TD_NOXREGS) |
| 757 | error ("sol_thread_store_registers: td_thr_getxregsize %s", |
| 758 | td_err_string (val)); |
| 759 | |
| 760 | /* Should probably do something about writing the xregs here, but what are |
| 761 | they? */ |
| 762 | #endif |
| 763 | } |
| 764 | |
| 765 | /* Get ready to modify the registers array. On machines which store |
| 766 | individual registers, this doesn't need to do anything. On machines |
| 767 | which store all the registers in one fell swoop, this makes sure |
| 768 | that registers contains all the registers from the program being |
| 769 | debugged. */ |
| 770 | |
| 771 | static void |
| 772 | sol_thread_prepare_to_store () |
| 773 | { |
| 774 | procfs_ops.to_prepare_to_store (); |
| 775 | } |
| 776 | |
| 777 | static int |
| 778 | sol_thread_xfer_memory (memaddr, myaddr, len, dowrite, target) |
| 779 | CORE_ADDR memaddr; |
| 780 | char *myaddr; |
| 781 | int len; |
| 782 | int dowrite; |
| 783 | struct target_ops *target; /* ignored */ |
| 784 | { |
| 785 | int retval; |
| 786 | struct cleanup *old_chain; |
| 787 | |
| 788 | old_chain = save_inferior_pid (); |
| 789 | |
| 790 | if (is_thread (inferior_pid) || /* A thread */ |
| 791 | !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ |
| 792 | inferior_pid = procfs_first_available (); /* Find any live lwp. */ |
| 793 | /* Note: don't need to call switch_to_thread; we're just reading memory. */ |
| 794 | |
| 795 | if (target_has_execution) |
| 796 | retval = procfs_ops.to_xfer_memory (memaddr, myaddr, len, dowrite, target); |
| 797 | else |
| 798 | retval = orig_core_ops.to_xfer_memory (memaddr, myaddr, len, |
| 799 | dowrite, target); |
| 800 | |
| 801 | do_cleanups (old_chain); |
| 802 | |
| 803 | return retval; |
| 804 | } |
| 805 | |
| 806 | /* Print status information about what we're accessing. */ |
| 807 | |
| 808 | static void |
| 809 | sol_thread_files_info (ignore) |
| 810 | struct target_ops *ignore; |
| 811 | { |
| 812 | procfs_ops.to_files_info (ignore); |
| 813 | } |
| 814 | |
| 815 | static void |
| 816 | sol_thread_kill_inferior () |
| 817 | { |
| 818 | procfs_ops.to_kill (); |
| 819 | } |
| 820 | |
| 821 | static void |
| 822 | sol_thread_notice_signals (pid) |
| 823 | int pid; |
| 824 | { |
| 825 | procfs_ops.to_notice_signals (pid); |
| 826 | } |
| 827 | |
| 828 | /* Fork an inferior process, and start debugging it with /proc. */ |
| 829 | |
| 830 | static void |
| 831 | sol_thread_create_inferior (exec_file, allargs, env) |
| 832 | char *exec_file; |
| 833 | char *allargs; |
| 834 | char **env; |
| 835 | { |
| 836 | procfs_ops.to_create_inferior (exec_file, allargs, env); |
| 837 | |
| 838 | if (sol_thread_active && inferior_pid != 0) |
| 839 | { |
| 840 | main_ph.pid = inferior_pid; /* Save for xfer_memory */ |
| 841 | |
| 842 | push_target (&sol_thread_ops); |
| 843 | |
| 844 | inferior_pid = lwp_to_thread (inferior_pid); |
| 845 | if (inferior_pid == -1) |
| 846 | inferior_pid = main_ph.pid; |
| 847 | |
| 848 | add_thread (inferior_pid); |
| 849 | } |
| 850 | } |
| 851 | |
| 852 | /* This routine is called whenever a new symbol table is read in, or when all |
| 853 | symbol tables are removed. libthread_db can only be initialized when it |
| 854 | finds the right variables in libthread.so. Since it's a shared library, |
| 855 | those variables don't show up until the library gets mapped and the symbol |
| 856 | table is read in. */ |
| 857 | |
| 858 | void |
| 859 | sol_thread_new_objfile (objfile) |
| 860 | struct objfile *objfile; |
| 861 | { |
| 862 | td_err_e val; |
| 863 | |
| 864 | if (!objfile) |
| 865 | { |
| 866 | sol_thread_active = 0; |
| 867 | |
| 868 | return; |
| 869 | } |
| 870 | |
| 871 | /* don't do anything if init failed to resolve the libthread_db library */ |
| 872 | if (!procfs_suppress_run) |
| 873 | return; |
| 874 | |
| 875 | /* Now, initialize the thread debugging library. This needs to be done after |
| 876 | the shared libraries are located because it needs information from the |
| 877 | user's thread library. */ |
| 878 | |
| 879 | val = p_td_init (); |
| 880 | if (val != TD_OK) |
| 881 | error ("target_new_objfile: td_init: %s", td_err_string (val)); |
| 882 | |
| 883 | val = p_td_ta_new (&main_ph, &main_ta); |
| 884 | if (val == TD_NOLIBTHREAD) |
| 885 | return; |
| 886 | else if (val != TD_OK) |
| 887 | error ("target_new_objfile: td_ta_new: %s", td_err_string (val)); |
| 888 | |
| 889 | sol_thread_active = 1; |
| 890 | } |
| 891 | |
| 892 | /* Clean up after the inferior dies. */ |
| 893 | |
| 894 | static void |
| 895 | sol_thread_mourn_inferior () |
| 896 | { |
| 897 | unpush_target (&sol_thread_ops); |
| 898 | procfs_ops.to_mourn_inferior (); |
| 899 | } |
| 900 | |
| 901 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
| 902 | |
| 903 | static int |
| 904 | sol_thread_can_run () |
| 905 | { |
| 906 | return procfs_suppress_run; |
| 907 | } |
| 908 | |
| 909 | /* |
| 910 | |
| 911 | LOCAL FUNCTION |
| 912 | |
| 913 | sol_thread_alive - test thread for "aliveness" |
| 914 | |
| 915 | SYNOPSIS |
| 916 | |
| 917 | static bool sol_thread_alive (int pid); |
| 918 | |
| 919 | DESCRIPTION |
| 920 | |
| 921 | returns true if thread still active in inferior. |
| 922 | |
| 923 | */ |
| 924 | |
| 925 | static int |
| 926 | sol_thread_alive (pid) |
| 927 | 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 /* kernel thread (LWP): let procfs test it */ |
| 942 | { |
| 943 | if (target_has_execution) |
| 944 | return procfs_ops.to_thread_alive (pid); |
| 945 | else |
| 946 | return orig_core_ops.to_thread_alive (pid); |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | static void |
| 951 | sol_thread_stop () |
| 952 | { |
| 953 | procfs_ops.to_stop (); |
| 954 | } |
| 955 | \f |
| 956 | /* These routines implement the lower half of the thread_db interface. Ie: the |
| 957 | ps_* routines. */ |
| 958 | |
| 959 | /* The next four routines are called by thread_db to tell us to stop and stop |
| 960 | a particular process or lwp. Since GDB ensures that these are all stopped |
| 961 | by the time we call anything in thread_db, these routines need to do |
| 962 | nothing. */ |
| 963 | |
| 964 | ps_err_e |
| 965 | ps_pstop (const struct ps_prochandle *ph) |
| 966 | { |
| 967 | return PS_OK; |
| 968 | } |
| 969 | |
| 970 | ps_err_e |
| 971 | ps_pcontinue (const struct ps_prochandle *ph) |
| 972 | { |
| 973 | return PS_OK; |
| 974 | } |
| 975 | |
| 976 | ps_err_e |
| 977 | ps_lstop (const struct ps_prochandle *ph, lwpid_t lwpid) |
| 978 | { |
| 979 | return PS_OK; |
| 980 | } |
| 981 | |
| 982 | ps_err_e |
| 983 | ps_lcontinue (const struct ps_prochandle *ph, lwpid_t lwpid) |
| 984 | { |
| 985 | return PS_OK; |
| 986 | } |
| 987 | |
| 988 | ps_err_e |
| 989 | ps_pglobal_lookup (const struct ps_prochandle *ph, const char *ld_object_name, |
| 990 | const char *ld_symbol_name, paddr_t *ld_symbol_addr) |
| 991 | { |
| 992 | struct minimal_symbol *ms; |
| 993 | |
| 994 | ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); |
| 995 | |
| 996 | if (!ms) |
| 997 | return PS_NOSYM; |
| 998 | |
| 999 | *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); |
| 1000 | |
| 1001 | return PS_OK; |
| 1002 | } |
| 1003 | |
| 1004 | /* Common routine for reading and writing memory. */ |
| 1005 | |
| 1006 | static ps_err_e |
| 1007 | rw_common (int dowrite, const struct ps_prochandle *ph, paddr_t addr, |
| 1008 | char *buf, int size) |
| 1009 | { |
| 1010 | struct cleanup *old_chain; |
| 1011 | |
| 1012 | old_chain = save_inferior_pid (); |
| 1013 | |
| 1014 | if (is_thread (inferior_pid) || /* A thread */ |
| 1015 | !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ |
| 1016 | inferior_pid = procfs_first_available (); /* Find any live lwp. */ |
| 1017 | /* Note: don't need to call switch_to_thread; we're just reading memory. */ |
| 1018 | |
| 1019 | while (size > 0) |
| 1020 | { |
| 1021 | int cc; |
| 1022 | |
| 1023 | if (target_has_execution) |
| 1024 | cc = procfs_ops.to_xfer_memory (addr, buf, size, dowrite, &procfs_ops); |
| 1025 | else |
| 1026 | cc = orig_core_ops.to_xfer_memory (addr, buf, size, dowrite, &core_ops); |
| 1027 | |
| 1028 | if (cc < 0) |
| 1029 | { |
| 1030 | if (dowrite == 0) |
| 1031 | print_sys_errmsg ("rw_common (): read", errno); |
| 1032 | else |
| 1033 | print_sys_errmsg ("rw_common (): write", errno); |
| 1034 | |
| 1035 | do_cleanups (old_chain); |
| 1036 | |
| 1037 | return PS_ERR; |
| 1038 | } |
| 1039 | size -= cc; |
| 1040 | buf += cc; |
| 1041 | } |
| 1042 | |
| 1043 | do_cleanups (old_chain); |
| 1044 | |
| 1045 | return PS_OK; |
| 1046 | } |
| 1047 | |
| 1048 | ps_err_e |
| 1049 | ps_pdread (const struct ps_prochandle *ph, paddr_t addr, char *buf, int size) |
| 1050 | { |
| 1051 | return rw_common (0, ph, addr, buf, size); |
| 1052 | } |
| 1053 | |
| 1054 | ps_err_e |
| 1055 | ps_pdwrite (const struct ps_prochandle *ph, paddr_t addr, char *buf, int size) |
| 1056 | { |
| 1057 | return rw_common (1, ph, addr, buf, size); |
| 1058 | } |
| 1059 | |
| 1060 | ps_err_e |
| 1061 | ps_ptread (const struct ps_prochandle *ph, paddr_t addr, char *buf, int size) |
| 1062 | { |
| 1063 | return rw_common (0, ph, addr, buf, size); |
| 1064 | } |
| 1065 | |
| 1066 | ps_err_e |
| 1067 | ps_ptwrite (const struct ps_prochandle *ph, paddr_t addr, char *buf, int size) |
| 1068 | { |
| 1069 | return rw_common (1, ph, addr, buf, size); |
| 1070 | } |
| 1071 | |
| 1072 | /* Get integer regs */ |
| 1073 | |
| 1074 | ps_err_e |
| 1075 | ps_lgetregs (const struct ps_prochandle *ph, lwpid_t lwpid, |
| 1076 | prgregset_t gregset) |
| 1077 | { |
| 1078 | struct cleanup *old_chain; |
| 1079 | |
| 1080 | old_chain = save_inferior_pid (); |
| 1081 | |
| 1082 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1083 | |
| 1084 | if (target_has_execution) |
| 1085 | procfs_ops.to_fetch_registers (-1); |
| 1086 | else |
| 1087 | orig_core_ops.to_fetch_registers (-1); |
| 1088 | fill_gregset (gregset, -1); |
| 1089 | |
| 1090 | do_cleanups (old_chain); |
| 1091 | |
| 1092 | return PS_OK; |
| 1093 | } |
| 1094 | |
| 1095 | /* Set integer regs */ |
| 1096 | |
| 1097 | ps_err_e |
| 1098 | ps_lsetregs (const struct ps_prochandle *ph, lwpid_t lwpid, |
| 1099 | const prgregset_t gregset) |
| 1100 | { |
| 1101 | struct cleanup *old_chain; |
| 1102 | |
| 1103 | old_chain = save_inferior_pid (); |
| 1104 | |
| 1105 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1106 | |
| 1107 | supply_gregset (gregset); |
| 1108 | if (target_has_execution) |
| 1109 | procfs_ops.to_store_registers (-1); |
| 1110 | else |
| 1111 | orig_core_ops.to_store_registers (-1); |
| 1112 | |
| 1113 | do_cleanups (old_chain); |
| 1114 | |
| 1115 | return PS_OK; |
| 1116 | } |
| 1117 | |
| 1118 | void |
| 1119 | ps_plog (const char *fmt, ...) |
| 1120 | { |
| 1121 | va_list args; |
| 1122 | |
| 1123 | va_start (args, fmt); |
| 1124 | |
| 1125 | vfprintf_filtered (gdb_stderr, fmt, args); |
| 1126 | } |
| 1127 | |
| 1128 | /* Get size of extra register set. Currently a noop. */ |
| 1129 | |
| 1130 | ps_err_e |
| 1131 | ps_lgetxregsize (const struct ps_prochandle *ph, lwpid_t lwpid, int *xregsize) |
| 1132 | { |
| 1133 | #if 0 |
| 1134 | int lwp_fd; |
| 1135 | int regsize; |
| 1136 | ps_err_e val; |
| 1137 | |
| 1138 | val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| 1139 | if (val != PS_OK) |
| 1140 | return val; |
| 1141 | |
| 1142 | if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) |
| 1143 | { |
| 1144 | if (errno == EINVAL) |
| 1145 | return PS_NOFREGS; /* XXX Wrong code, but this is the closest |
| 1146 | thing in proc_service.h */ |
| 1147 | |
| 1148 | print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); |
| 1149 | return PS_ERR; |
| 1150 | } |
| 1151 | #endif |
| 1152 | |
| 1153 | return PS_OK; |
| 1154 | } |
| 1155 | |
| 1156 | /* Get extra register set. Currently a noop. */ |
| 1157 | |
| 1158 | ps_err_e |
| 1159 | ps_lgetxregs (const struct ps_prochandle *ph, lwpid_t lwpid, caddr_t xregset) |
| 1160 | { |
| 1161 | #if 0 |
| 1162 | int lwp_fd; |
| 1163 | ps_err_e val; |
| 1164 | |
| 1165 | val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| 1166 | if (val != PS_OK) |
| 1167 | return val; |
| 1168 | |
| 1169 | if (ioctl (lwp_fd, PIOCGXREG, xregset)) |
| 1170 | { |
| 1171 | print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); |
| 1172 | return PS_ERR; |
| 1173 | } |
| 1174 | #endif |
| 1175 | |
| 1176 | return PS_OK; |
| 1177 | } |
| 1178 | |
| 1179 | /* Set extra register set. Currently a noop. */ |
| 1180 | |
| 1181 | ps_err_e |
| 1182 | ps_lsetxregs (const struct ps_prochandle *ph, lwpid_t lwpid, caddr_t xregset) |
| 1183 | { |
| 1184 | #if 0 |
| 1185 | int lwp_fd; |
| 1186 | ps_err_e val; |
| 1187 | |
| 1188 | val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| 1189 | if (val != PS_OK) |
| 1190 | return val; |
| 1191 | |
| 1192 | if (ioctl (lwp_fd, PIOCSXREG, xregset)) |
| 1193 | { |
| 1194 | print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); |
| 1195 | return PS_ERR; |
| 1196 | } |
| 1197 | #endif |
| 1198 | |
| 1199 | return PS_OK; |
| 1200 | } |
| 1201 | |
| 1202 | /* Get floating-point regs. */ |
| 1203 | |
| 1204 | ps_err_e |
| 1205 | ps_lgetfpregs (const struct ps_prochandle *ph, lwpid_t lwpid, |
| 1206 | prfpregset_t *fpregset) |
| 1207 | { |
| 1208 | struct cleanup *old_chain; |
| 1209 | |
| 1210 | old_chain = save_inferior_pid (); |
| 1211 | |
| 1212 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1213 | |
| 1214 | if (target_has_execution) |
| 1215 | procfs_ops.to_fetch_registers (-1); |
| 1216 | else |
| 1217 | orig_core_ops.to_fetch_registers (-1); |
| 1218 | fill_fpregset (*fpregset, -1); |
| 1219 | |
| 1220 | do_cleanups (old_chain); |
| 1221 | |
| 1222 | return PS_OK; |
| 1223 | } |
| 1224 | |
| 1225 | /* Set floating-point regs. */ |
| 1226 | |
| 1227 | ps_err_e |
| 1228 | ps_lsetfpregs (const struct ps_prochandle *ph, lwpid_t lwpid, |
| 1229 | const prfpregset_t *fpregset) |
| 1230 | { |
| 1231 | struct cleanup *old_chain; |
| 1232 | |
| 1233 | old_chain = save_inferior_pid (); |
| 1234 | |
| 1235 | inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| 1236 | |
| 1237 | supply_fpregset (*fpregset); |
| 1238 | if (target_has_execution) |
| 1239 | procfs_ops.to_store_registers (-1); |
| 1240 | else |
| 1241 | orig_core_ops.to_store_registers (-1); |
| 1242 | |
| 1243 | do_cleanups (old_chain); |
| 1244 | |
| 1245 | return PS_OK; |
| 1246 | } |
| 1247 | |
| 1248 | #ifdef TM_I386SOL2_H |
| 1249 | |
| 1250 | /* Get local descriptor table. */ |
| 1251 | |
| 1252 | #include <sys/procfs.h> |
| 1253 | #include <sys/reg.h> |
| 1254 | #include <sys/sysi86.h> |
| 1255 | |
| 1256 | static int nldt_allocated = 0; |
| 1257 | static struct ssd *ldt_bufp = NULL; |
| 1258 | |
| 1259 | ps_err_e |
| 1260 | ps_lgetLDT (const struct ps_prochandle *ph, lwpid_t lwpid, |
| 1261 | struct ssd *pldt) |
| 1262 | { |
| 1263 | gregset_t gregset; |
| 1264 | int lwp_fd; |
| 1265 | ps_err_e val; |
| 1266 | int nldt; |
| 1267 | int i; |
| 1268 | |
| 1269 | /* Get procfs file descriptor for the LWP. */ |
| 1270 | lwp_fd = procfs_get_pid_fd (BUILD_LWP (lwpid, PIDGET (inferior_pid))); |
| 1271 | if (lwp_fd < 0) |
| 1272 | return PS_BADLID; |
| 1273 | |
| 1274 | /* Fetch registers und LDT descriptors. */ |
| 1275 | if (ioctl (lwp_fd, PIOCGREG, &gregset) == -1) |
| 1276 | return PS_ERR; |
| 1277 | |
| 1278 | if (ioctl (lwp_fd, PIOCNLDT, &nldt) == -1) |
| 1279 | return PS_ERR; |
| 1280 | |
| 1281 | if (nldt_allocated < nldt) |
| 1282 | { |
| 1283 | ldt_bufp |
| 1284 | = (struct ssd *) xrealloc (ldt_bufp, (nldt + 1) * sizeof (struct ssd)); |
| 1285 | nldt_allocated = nldt; |
| 1286 | } |
| 1287 | |
| 1288 | if (ioctl (lwp_fd, PIOCLDT, ldt_bufp) == -1) |
| 1289 | return PS_ERR; |
| 1290 | |
| 1291 | /* Search LDT for the LWP via register GS. */ |
| 1292 | for (i = 0; i < nldt; i++) |
| 1293 | { |
| 1294 | if (ldt_bufp[i].sel == gregset[GS]) |
| 1295 | { |
| 1296 | *pldt = ldt_bufp[i]; |
| 1297 | return PS_OK; |
| 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | /* LDT not found. */ |
| 1302 | return PS_ERR; |
| 1303 | } |
| 1304 | #endif /* TM_I386SOL2_H */ |
| 1305 | \f |
| 1306 | /* Convert a pid to printable form. */ |
| 1307 | |
| 1308 | char * |
| 1309 | solaris_pid_to_str (pid) |
| 1310 | int pid; |
| 1311 | { |
| 1312 | static char buf[100]; |
| 1313 | |
| 1314 | /* in case init failed to resolve the libthread_db library */ |
| 1315 | if (!procfs_suppress_run) |
| 1316 | return procfs_pid_to_str (pid); |
| 1317 | |
| 1318 | if (is_thread (pid)) |
| 1319 | { |
| 1320 | int lwp; |
| 1321 | |
| 1322 | lwp = thread_to_lwp (pid, -2); |
| 1323 | |
| 1324 | if (lwp == -1) |
| 1325 | sprintf (buf, "Thread %d (defunct)", GET_THREAD (pid)); |
| 1326 | else if (lwp != -2) |
| 1327 | sprintf (buf, "Thread %d (LWP %d)", GET_THREAD (pid), GET_LWP (lwp)); |
| 1328 | else |
| 1329 | sprintf (buf, "Thread %d ", GET_THREAD (pid)); |
| 1330 | } |
| 1331 | else if (GET_LWP (pid) != 0) |
| 1332 | sprintf (buf, "LWP %d ", GET_LWP (pid)); |
| 1333 | else |
| 1334 | sprintf (buf, "process %d ", PIDGET (pid)); |
| 1335 | |
| 1336 | return buf; |
| 1337 | } |
| 1338 | \f |
| 1339 | |
| 1340 | /* Worker bee for find_new_threads |
| 1341 | Callback function that gets called once per USER thread (i.e., not |
| 1342 | kernel) thread. */ |
| 1343 | |
| 1344 | static int |
| 1345 | sol_find_new_threads_callback(th, ignored) |
| 1346 | const td_thrhandle_t *th; |
| 1347 | void *ignored; |
| 1348 | { |
| 1349 | td_err_e retval; |
| 1350 | td_thrinfo_t ti; |
| 1351 | int pid; |
| 1352 | |
| 1353 | if ((retval = p_td_thr_get_info(th, &ti)) != TD_OK) |
| 1354 | { |
| 1355 | return -1; |
| 1356 | } |
| 1357 | pid = BUILD_THREAD(ti.ti_tid, PIDGET(inferior_pid)); |
| 1358 | if (!in_thread_list(pid)) |
| 1359 | add_thread(pid); |
| 1360 | |
| 1361 | return 0; |
| 1362 | } |
| 1363 | |
| 1364 | void |
| 1365 | sol_find_new_threads() |
| 1366 | { |
| 1367 | /* don't do anything if init failed to resolve the libthread_db library */ |
| 1368 | if (!procfs_suppress_run) |
| 1369 | return; |
| 1370 | |
| 1371 | if (inferior_pid == -1) |
| 1372 | { |
| 1373 | printf_filtered("No process.\n"); |
| 1374 | return; |
| 1375 | } |
| 1376 | p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *)0, |
| 1377 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 1378 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 1379 | } |
| 1380 | |
| 1381 | static void |
| 1382 | sol_core_open (filename, from_tty) |
| 1383 | char *filename; |
| 1384 | int from_tty; |
| 1385 | { |
| 1386 | orig_core_ops.to_open (filename, from_tty); |
| 1387 | } |
| 1388 | |
| 1389 | static void |
| 1390 | sol_core_close (quitting) |
| 1391 | int quitting; |
| 1392 | { |
| 1393 | orig_core_ops.to_close (quitting); |
| 1394 | } |
| 1395 | |
| 1396 | static void |
| 1397 | sol_core_detach (args, from_tty) |
| 1398 | char *args; |
| 1399 | int from_tty; |
| 1400 | { |
| 1401 | unpush_target (&core_ops); |
| 1402 | orig_core_ops.to_detach (args, from_tty); |
| 1403 | } |
| 1404 | |
| 1405 | static void |
| 1406 | sol_core_files_info (t) |
| 1407 | struct target_ops *t; |
| 1408 | { |
| 1409 | orig_core_ops.to_files_info (t); |
| 1410 | } |
| 1411 | |
| 1412 | #ifdef MAINTENANCE_CMDS |
| 1413 | /* Worker bee for info sol-thread command. This is a callback function that |
| 1414 | gets called once for each Solaris thread (ie. not kernel thread) in the |
| 1415 | inferior. Print anything interesting that we can think of. */ |
| 1416 | |
| 1417 | static int |
| 1418 | info_cb (th, s) |
| 1419 | const td_thrhandle_t *th; |
| 1420 | void *s; |
| 1421 | { |
| 1422 | td_err_e ret; |
| 1423 | td_thrinfo_t ti; |
| 1424 | struct minimal_symbol *msym; |
| 1425 | |
| 1426 | if ((ret = p_td_thr_get_info (th, &ti)) == TD_OK) |
| 1427 | { |
| 1428 | printf_filtered ("%s thread #%d, lwp %d, ", |
| 1429 | ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", |
| 1430 | ti.ti_tid, ti.ti_lid); |
| 1431 | switch (ti.ti_state) { |
| 1432 | default: |
| 1433 | case TD_THR_UNKNOWN: printf_filtered ("<unknown state>"); break; |
| 1434 | case TD_THR_STOPPED: printf_filtered ("(stopped)"); break; |
| 1435 | case TD_THR_RUN: printf_filtered ("(run) "); break; |
| 1436 | case TD_THR_ACTIVE: printf_filtered ("(active) "); break; |
| 1437 | case TD_THR_ZOMBIE: printf_filtered ("(zombie) "); break; |
| 1438 | case TD_THR_SLEEP: printf_filtered ("(asleep) "); break; |
| 1439 | case TD_THR_STOPPED_ASLEEP: |
| 1440 | printf_filtered ("(stopped asleep)"); break; |
| 1441 | } |
| 1442 | /* Print thr_create start function: */ |
| 1443 | if (ti.ti_startfunc != 0) |
| 1444 | if (msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc)) |
| 1445 | printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym)); |
| 1446 | else |
| 1447 | printf_filtered (" startfunc: 0x%08x\n", ti.ti_startfunc); |
| 1448 | |
| 1449 | /* If thread is asleep, print function that went to sleep: */ |
| 1450 | if (ti.ti_state == TD_THR_SLEEP) |
| 1451 | if (msym = lookup_minimal_symbol_by_pc (ti.ti_pc)) |
| 1452 | printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym)); |
| 1453 | else |
| 1454 | printf_filtered (" - Sleep func: 0x%08x\n", ti.ti_startfunc); |
| 1455 | |
| 1456 | /* Wrap up line, if necessary */ |
| 1457 | if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) |
| 1458 | printf_filtered ("\n"); /* don't you hate counting newlines? */ |
| 1459 | } |
| 1460 | else |
| 1461 | warning ("info sol-thread: failed to get info for thread."); |
| 1462 | |
| 1463 | return 0; |
| 1464 | } |
| 1465 | |
| 1466 | /* List some state about each Solaris user thread in the inferior. */ |
| 1467 | |
| 1468 | static void |
| 1469 | info_solthreads (args, from_tty) |
| 1470 | char *args; |
| 1471 | int from_tty; |
| 1472 | { |
| 1473 | p_td_ta_thr_iter (main_ta, info_cb, args, |
| 1474 | TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 1475 | TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 1476 | } |
| 1477 | #endif /* MAINTENANCE_CMDS */ |
| 1478 | |
| 1479 | static int |
| 1480 | ignore (addr, contents) |
| 1481 | CORE_ADDR addr; |
| 1482 | char *contents; |
| 1483 | { |
| 1484 | return 0; |
| 1485 | } |
| 1486 | |
| 1487 | struct target_ops sol_thread_ops = { |
| 1488 | "solaris-threads", /* to_shortname */ |
| 1489 | "Solaris threads and pthread.", /* to_longname */ |
| 1490 | "Solaris threads and pthread support.", /* to_doc */ |
| 1491 | sol_thread_open, /* to_open */ |
| 1492 | 0, /* to_close */ |
| 1493 | sol_thread_attach, /* to_attach */ |
| 1494 | sol_thread_detach, /* to_detach */ |
| 1495 | sol_thread_resume, /* to_resume */ |
| 1496 | sol_thread_wait, /* to_wait */ |
| 1497 | sol_thread_fetch_registers, /* to_fetch_registers */ |
| 1498 | sol_thread_store_registers, /* to_store_registers */ |
| 1499 | sol_thread_prepare_to_store, /* to_prepare_to_store */ |
| 1500 | sol_thread_xfer_memory, /* to_xfer_memory */ |
| 1501 | sol_thread_files_info, /* to_files_info */ |
| 1502 | memory_insert_breakpoint, /* to_insert_breakpoint */ |
| 1503 | memory_remove_breakpoint, /* to_remove_breakpoint */ |
| 1504 | terminal_init_inferior, /* to_terminal_init */ |
| 1505 | terminal_inferior, /* to_terminal_inferior */ |
| 1506 | terminal_ours_for_output, /* to_terminal_ours_for_output */ |
| 1507 | terminal_ours, /* to_terminal_ours */ |
| 1508 | child_terminal_info, /* to_terminal_info */ |
| 1509 | sol_thread_kill_inferior, /* to_kill */ |
| 1510 | 0, /* to_load */ |
| 1511 | 0, /* to_lookup_symbol */ |
| 1512 | sol_thread_create_inferior, /* to_create_inferior */ |
| 1513 | sol_thread_mourn_inferior, /* to_mourn_inferior */ |
| 1514 | sol_thread_can_run, /* to_can_run */ |
| 1515 | sol_thread_notice_signals, /* to_notice_signals */ |
| 1516 | sol_thread_alive, /* to_thread_alive */ |
| 1517 | sol_thread_stop, /* to_stop */ |
| 1518 | process_stratum, /* to_stratum */ |
| 1519 | 0, /* to_next */ |
| 1520 | 1, /* to_has_all_memory */ |
| 1521 | 1, /* to_has_memory */ |
| 1522 | 1, /* to_has_stack */ |
| 1523 | 1, /* to_has_registers */ |
| 1524 | 1, /* to_has_execution */ |
| 1525 | 0, /* sections */ |
| 1526 | 0, /* sections_end */ |
| 1527 | OPS_MAGIC /* to_magic */ |
| 1528 | }; |
| 1529 | |
| 1530 | struct target_ops sol_core_ops = { |
| 1531 | "solaris-core", /* to_shortname */ |
| 1532 | "Solaris core threads and pthread.", /* to_longname */ |
| 1533 | "Solaris threads and pthread support for core files.", /* to_doc */ |
| 1534 | sol_core_open, /* to_open */ |
| 1535 | sol_core_close, /* to_close */ |
| 1536 | sol_thread_attach, /* XXX to_attach */ |
| 1537 | sol_core_detach, /* to_detach */ |
| 1538 | 0, /* to_resume */ |
| 1539 | 0, /* to_wait */ |
| 1540 | sol_thread_fetch_registers, /* to_fetch_registers */ |
| 1541 | 0, /* to_store_registers */ |
| 1542 | 0, /* to_prepare_to_store */ |
| 1543 | sol_thread_xfer_memory, /* XXX to_xfer_memory */ |
| 1544 | sol_core_files_info, /* to_files_info */ |
| 1545 | ignore, /* to_insert_breakpoint */ |
| 1546 | ignore, /* to_remove_breakpoint */ |
| 1547 | 0, /* to_terminal_init */ |
| 1548 | 0, /* to_terminal_inferior */ |
| 1549 | 0, /* to_terminal_ours_for_output */ |
| 1550 | 0, /* to_terminal_ours */ |
| 1551 | 0, /* to_terminal_info */ |
| 1552 | 0, /* to_kill */ |
| 1553 | 0, /* to_load */ |
| 1554 | 0, /* to_lookup_symbol */ |
| 1555 | sol_thread_create_inferior, /* XXX to_create_inferior */ |
| 1556 | 0, /* to_mourn_inferior */ |
| 1557 | 0, /* to_can_run */ |
| 1558 | 0, /* to_notice_signals */ |
| 1559 | 0, /* to_thread_alive */ |
| 1560 | 0, /* to_stop */ |
| 1561 | core_stratum, /* to_stratum */ |
| 1562 | 0, /* to_next */ |
| 1563 | 0, /* to_has_all_memory */ |
| 1564 | 1, /* to_has_memory */ |
| 1565 | 1, /* to_has_stack */ |
| 1566 | 1, /* to_has_registers */ |
| 1567 | 0, /* to_has_execution */ |
| 1568 | 0, /* sections */ |
| 1569 | 0, /* sections_end */ |
| 1570 | OPS_MAGIC /* to_magic */ |
| 1571 | }; |
| 1572 | |
| 1573 | /* we suppress the call to add_target of core_ops in corelow because |
| 1574 | if there are two targets in the stratum core_stratum, find_core_target |
| 1575 | won't know which one to return. see corelow.c for an additonal |
| 1576 | comment on coreops_suppress_target. */ |
| 1577 | int coreops_suppress_target = 1; |
| 1578 | |
| 1579 | void |
| 1580 | _initialize_sol_thread () |
| 1581 | { |
| 1582 | void *dlhandle; |
| 1583 | |
| 1584 | dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); |
| 1585 | if (!dlhandle) |
| 1586 | goto die; |
| 1587 | |
| 1588 | #define resolve(X) \ |
| 1589 | if (!(p_##X = dlsym (dlhandle, #X))) \ |
| 1590 | goto die; |
| 1591 | |
| 1592 | resolve (td_log); |
| 1593 | resolve (td_ta_new); |
| 1594 | resolve (td_ta_delete); |
| 1595 | resolve (td_init); |
| 1596 | resolve (td_ta_get_ph); |
| 1597 | resolve (td_ta_get_nthreads); |
| 1598 | resolve (td_ta_tsd_iter); |
| 1599 | resolve (td_ta_thr_iter); |
| 1600 | resolve (td_thr_validate); |
| 1601 | resolve (td_thr_tsd); |
| 1602 | resolve (td_thr_get_info); |
| 1603 | resolve (td_thr_getfpregs); |
| 1604 | resolve (td_thr_getxregsize); |
| 1605 | resolve (td_thr_getxregs); |
| 1606 | resolve (td_thr_sigsetmask); |
| 1607 | resolve (td_thr_setprio); |
| 1608 | resolve (td_thr_setsigpending); |
| 1609 | resolve (td_thr_setfpregs); |
| 1610 | resolve (td_thr_setxregs); |
| 1611 | resolve (td_ta_map_id2thr); |
| 1612 | resolve (td_ta_map_lwp2thr); |
| 1613 | resolve (td_thr_getgregs); |
| 1614 | resolve (td_thr_setgregs); |
| 1615 | |
| 1616 | add_target (&sol_thread_ops); |
| 1617 | |
| 1618 | procfs_suppress_run = 1; |
| 1619 | |
| 1620 | #ifdef MAINTENANCE_CMDS |
| 1621 | add_cmd ("sol-threads", class_maintenance, info_solthreads, |
| 1622 | "Show info on Solaris user threads.\n", &maintenanceinfolist); |
| 1623 | #endif /* MAINTENANCE_CMDS */ |
| 1624 | |
| 1625 | memcpy(&orig_core_ops, &core_ops, sizeof (struct target_ops)); |
| 1626 | memcpy(&core_ops, &sol_core_ops, sizeof (struct target_ops)); |
| 1627 | add_target (&core_ops); |
| 1628 | |
| 1629 | return; |
| 1630 | |
| 1631 | die: |
| 1632 | |
| 1633 | fprintf_unfiltered (gdb_stderr, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); |
| 1634 | |
| 1635 | if (dlhandle) |
| 1636 | dlclose (dlhandle); |
| 1637 | |
| 1638 | /* allow the user to debug non-threaded core files */ |
| 1639 | add_target(&core_ops); |
| 1640 | |
| 1641 | return; |
| 1642 | } |