2 * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
35 #include <sys/types.h>
36 #include <sys/linker_set.h>
37 #include <sys/ptrace.h>
38 #include <proc_service.h>
39 #include <thread_db.h>
41 #include "libpthread_db.h"
44 #define P2T(c) ps2td(c)
46 static void pt_unmap_lwp(const td_thragent_t *ta, lwpid_t lwp);
47 static int pt_validate(const td_thrhandle_t *th);
64 return TD_NOLIBTHREAD;
73 pt_map_thread(const td_thragent_t *const_ta, psaddr_t pt, enum pt_type type)
75 td_thragent_t *ta = __DECONST(td_thragent_t *, const_ta);
80 for (i = 1; i < ta->map_len; ++i) {
81 if (ta->map[i].type == PT_NONE) {
84 } else if (ta->map[i].type == type && ta->map[i].thr == pt) {
90 if (ta->map_len == 0) {
91 ta->map = calloc(20, sizeof(struct pt_map));
97 new = realloc(ta->map,
98 sizeof(struct pt_map) * ta->map_len * 2);
101 memset(new + ta->map_len, '\0', sizeof(struct pt_map) *
109 ta->map[first].type = type;
110 ta->map[first].thr = pt;
122 pt_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
124 #define LOOKUP_SYM(proc, sym, addr) \
125 ret = ps_pglobal_lookup(proc, NULL, sym, addr); \
127 TDBG("can not find symbol: %s\n", sym); \
128 ret = TD_NOLIBTHREAD; \
132 #define LOOKUP_VAL(proc, sym, val) \
133 ret = ps_pglobal_lookup(proc, NULL, sym, &vaddr);\
135 TDBG("can not find symbol: %s\n", sym); \
136 ret = TD_NOLIBTHREAD; \
139 ret = ps_pread(proc, vaddr, val, sizeof(int)); \
141 TDBG("can not read value of %s\n", sym);\
142 ret = TD_NOLIBTHREAD; \
153 ta = malloc(sizeof(td_thragent_t));
158 ta->thread_activated = 0;
162 LOOKUP_SYM(ph, "_libkse_debug", &ta->libkse_debug_addr);
163 LOOKUP_SYM(ph, "_thread_list", &ta->thread_list_addr);
164 LOOKUP_SYM(ph, "_thread_activated", &ta->thread_activated_addr);
165 LOOKUP_SYM(ph, "_thread_active_threads",&ta->thread_active_threads_addr);
166 LOOKUP_SYM(ph, "_thread_keytable", &ta->thread_keytable_addr);
167 LOOKUP_VAL(ph, "_thread_off_dtv", &ta->thread_off_dtv);
168 LOOKUP_VAL(ph, "_thread_off_kse_locklevel", &ta->thread_off_kse_locklevel);
169 LOOKUP_VAL(ph, "_thread_off_kse", &ta->thread_off_kse);
170 LOOKUP_VAL(ph, "_thread_off_tlsindex", &ta->thread_off_tlsindex);
171 LOOKUP_VAL(ph, "_thread_off_attr_flags", &ta->thread_off_attr_flags);
172 LOOKUP_VAL(ph, "_thread_size_key", &ta->thread_size_key);
173 LOOKUP_VAL(ph, "_thread_off_tcb", &ta->thread_off_tcb);
174 LOOKUP_VAL(ph, "_thread_off_linkmap", &ta->thread_off_linkmap);
175 LOOKUP_VAL(ph, "_thread_off_tmbx", &ta->thread_off_tmbx);
176 LOOKUP_VAL(ph, "_thread_off_thr_locklevel", &ta->thread_off_thr_locklevel);
177 LOOKUP_VAL(ph, "_thread_off_next", &ta->thread_off_next);
178 LOOKUP_VAL(ph, "_thread_off_state", &ta->thread_off_state);
179 LOOKUP_VAL(ph, "_thread_max_keys", &ta->thread_max_keys);
180 LOOKUP_VAL(ph, "_thread_off_key_allocated", &ta->thread_off_key_allocated);
181 LOOKUP_VAL(ph, "_thread_off_key_destructor", &ta->thread_off_key_destructor);
182 LOOKUP_VAL(ph, "_thread_state_running", &ta->thread_state_running);
183 LOOKUP_VAL(ph, "_thread_state_zoombie", &ta->thread_state_zoombie);
184 LOOKUP_VAL(ph, "_thread_off_sigmask", &ta->thread_off_sigmask);
185 LOOKUP_VAL(ph, "_thread_off_sigpend", &ta->thread_off_sigpend);
188 * If this fails it probably means we're debugging a core file and
191 ps_pwrite(ph, ta->libkse_debug_addr, &dbg, sizeof(int));
201 pt_ta_delete(td_thragent_t *ta)
209 * Error returns from this write are not really a problem;
210 * the process doesn't exist any more.
212 ps_pwrite(ta->ph, ta->libkse_debug_addr, &dbg, sizeof(int));
220 pt_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
223 psaddr_t pt, tcb_addr;
229 if (id < 0 || id >= ta->map_len || ta->map[id].type == PT_NONE)
232 ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
235 if (ta->map[id].type == PT_LWP) {
237 * if we are referencing a lwp, make sure it was not already
238 * mapped to user thread.
241 ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb,
245 ret = thr_pread_int(ta, tcb_addr + ta->thread_off_tmbx +
246 offsetof(struct kse_thr_mailbox, tm_lwp), &lwp);
250 * If the lwp was already mapped to userland thread,
251 * we shouldn't reference it directly in future.
253 if (lwp == ta->map[id].lwp) {
254 ta->map[id].type = PT_NONE;
257 /* get next thread */
258 ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
263 ret = ps_lgetregs(ta->ph, ta->map[id].lwp, gregs);
265 /* no longer exists */
266 ta->map[id].type = PT_NONE;
270 while (pt != 0 && ta->map[id].thr != pt) {
271 ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb,
275 /* get next thread */
276 ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
282 /* no longer exists */
283 ta->map[id].type = PT_NONE;
294 pt_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwp, td_thrhandle_t *th)
296 psaddr_t pt, tcb_addr;
302 ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
306 ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb, &tcb_addr);
309 ret = thr_pread_int(ta, tcb_addr + ta->thread_off_tmbx +
310 offsetof(struct kse_thr_mailbox, tm_lwp), &lwp1);
315 th->th_tid = pt_map_thread(ta, pt, PT_USER);
316 if (th->th_tid == -1)
318 pt_unmap_lwp(ta, lwp);
323 /* get next thread */
324 ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
333 pt_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *callback,
334 void *cbdata_p, td_thr_state_e state __unused, int ti_pri __unused,
335 sigset_t *ti_sigmask_p __unused, unsigned int ti_user_flags __unused)
344 pserr = ps_pread(ta->ph, ta->thread_activated_addr, &activated,
351 ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
356 th.th_tid = pt_map_thread(ta, pt, PT_USER);
358 /* should we unmap lwp here ? */
361 if ((*callback)(&th, cbdata_p))
363 /* get next thread */
364 ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
372 pt_ta_tsd_iter(const td_thragent_t *ta, td_key_iter_f *ki, void *arg)
376 int i, ret, allocated;
380 keytable = malloc(ta->thread_max_keys * ta->thread_size_key);
381 if (keytable == NULL)
383 ret = ps_pread(ta->ph, (psaddr_t)ta->thread_keytable_addr, keytable,
384 ta->thread_max_keys * ta->thread_size_key);
389 for (i = 0; i < ta->thread_max_keys; i++) {
390 allocated = *(int *)(void *)((uintptr_t)keytable +
391 i * ta->thread_size_key + ta->thread_off_key_allocated);
392 destructor = *(void **)(void *)((uintptr_t)keytable +
393 i * ta->thread_size_key + ta->thread_off_key_destructor);
395 ret = (ki)(i, destructor, arg);
407 pt_ta_event_addr(const td_thragent_t *ta __unused, td_event_e event __unused,
408 td_notify_t *ptr __unused)
415 pt_ta_set_event(const td_thragent_t *ta __unused,
416 td_thr_events_t *events __unused)
423 pt_ta_clear_event(const td_thragent_t *ta __unused,
424 td_thr_events_t *events __unused)
431 pt_ta_event_getmsg(const td_thragent_t *ta __unused,
432 td_event_msg_t *msg __unused)
439 pt_dbsuspend(const td_thrhandle_t *th, int suspend)
441 const td_thragent_t *ta = th->th_ta;
442 psaddr_t tcb_addr, tmbx_addr, ptr;
445 int attrflags, locklevel, ret;
449 ret = pt_validate(th);
453 if (ta->map[th->th_tid].type == PT_LWP) {
455 ret = ps_lstop(ta->ph, ta->map[th->th_tid].lwp);
457 ret = ps_lcontinue(ta->ph, ta->map[th->th_tid].lwp);
461 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
462 ta->thread_off_attr_flags,
463 &attrflags, sizeof(attrflags));
466 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
468 &tcb_addr, sizeof(tcb_addr));
471 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
472 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
473 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
478 /* don't suspend signal thread */
479 if (attrflags & 0x200)
481 if (attrflags & PTHREAD_SCOPE_SYSTEM) {
483 * don't suspend system scope thread if it is holding
484 * some low level locks
486 ptr = ta->map[th->th_tid].thr + ta->thread_off_kse;
487 ret = ps_pread(ta->ph, ptr, &ptr, sizeof(ptr));
490 ret = ps_pread(ta->ph, ptr + ta->thread_off_kse_locklevel,
491 &locklevel, sizeof(int));
494 if (locklevel <= 0) {
495 ptr = ta->map[th->th_tid].thr +
496 ta->thread_off_thr_locklevel;
497 ret = ps_pread(ta->ph, ptr, &locklevel,
504 ret = ps_lstop(ta->ph, lwp);
506 ret = ps_lcontinue(ta->ph, lwp);
512 struct ptrace_lwpinfo pl;
514 if (ps_linfo(ta->ph, lwp, (caddr_t)&pl))
517 if (!(pl.pl_flags & PL_FLAG_BOUND))
518 ret = ps_lstop(ta->ph, lwp);
520 ret = ps_lcontinue(ta->ph, lwp);
528 ret = ps_pread(ta->ph,
529 tmbx_addr + offsetof(struct kse_thr_mailbox, tm_dflags),
530 &dflags, sizeof(dflags));
534 dflags |= TMDF_SUSPEND;
536 dflags &= ~TMDF_SUSPEND;
537 ret = ps_pwrite(ta->ph,
538 tmbx_addr + offsetof(struct kse_thr_mailbox, tm_dflags),
539 &dflags, sizeof(dflags));
544 pt_thr_dbresume(const td_thrhandle_t *th)
548 return pt_dbsuspend(th, 0);
552 pt_thr_dbsuspend(const td_thrhandle_t *th)
556 return pt_dbsuspend(th, 1);
560 pt_thr_validate(const td_thrhandle_t *th)
567 ret = pt_ta_map_id2thr(th->th_ta, th->th_tid,
573 pt_thr_old_get_info(const td_thrhandle_t *th, td_old_thrinfo_t *info)
575 const td_thragent_t *ta = th->th_ta;
576 struct ptrace_lwpinfo linfo;
586 bzero(info, sizeof(*info));
587 ret = pt_validate(th);
591 memset(info, 0, sizeof(*info));
592 if (ta->map[th->th_tid].type == PT_LWP) {
593 info->ti_type = TD_THR_SYSTEM;
594 info->ti_lid = ta->map[th->th_tid].lwp;
595 info->ti_tid = th->th_tid;
596 info->ti_state = TD_THR_RUN;
597 info->ti_type = TD_THR_SYSTEM;
601 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
602 ta->thread_off_attr_flags,
603 &attrflags, sizeof(attrflags));
606 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
607 &tcb_addr, sizeof(tcb_addr));
610 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_state,
611 &state, sizeof(state));
612 ret = ps_pread(ta->ph,
613 tcb_addr + ta->thread_off_tmbx +
614 offsetof(struct kse_thr_mailbox, tm_lwp),
615 &info->ti_lid, sizeof(lwpid_t));
618 ret = ps_pread(ta->ph,
619 tcb_addr + ta->thread_off_tmbx +
620 offsetof(struct kse_thr_mailbox, tm_dflags),
621 &dflags, sizeof(dflags));
624 ret = ps_pread(ta->ph, tcb_addr + ta->thread_off_tmbx +
625 offsetof(struct kse_thr_mailbox, tm_lwp), &lwp, sizeof(lwpid_t));
628 info->ti_ta_p = th->th_ta;
629 info->ti_tid = th->th_tid;
631 if (attrflags & PTHREAD_SCOPE_SYSTEM) {
632 ret = ps_linfo(ta->ph, lwp, &linfo);
634 info->ti_sigmask = linfo.pl_sigmask;
635 info->ti_pending = linfo.pl_siglist;
639 ret = ps_pread(ta->ph,
640 ta->map[th->th_tid].thr + ta->thread_off_sigmask,
641 &info->ti_sigmask, sizeof(sigset_t));
644 ret = ps_pread(ta->ph,
645 ta->map[th->th_tid].thr + ta->thread_off_sigpend,
646 &info->ti_pending, sizeof(sigset_t));
651 if (state == ta->thread_state_running)
652 info->ti_state = TD_THR_RUN;
653 else if (state == ta->thread_state_zoombie)
654 info->ti_state = TD_THR_ZOMBIE;
656 info->ti_state = TD_THR_SLEEP;
657 info->ti_db_suspended = ((dflags & TMDF_SUSPEND) != 0);
658 info->ti_type = TD_THR_USER;
663 pt_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *info)
667 e = pt_thr_old_get_info(th, (td_old_thrinfo_t *)info);
668 bzero(&info->ti_siginfo, sizeof(info->ti_siginfo));
674 pt_thr_getxmmregs(const td_thrhandle_t *th, char *fxsave)
676 const td_thragent_t *ta = th->th_ta;
677 struct kse_thr_mailbox tmbx;
678 psaddr_t tcb_addr, tmbx_addr, ptr;
686 ret = pt_validate(th);
690 if (ta->map[th->th_tid].type == PT_LWP) {
691 ret = ps_lgetxmmregs(ta->ph, ta->map[th->th_tid].lwp, fxsave);
695 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
696 &tcb_addr, sizeof(tcb_addr));
699 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
700 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
701 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
705 ret = ps_lgetxmmregs(ta->ph, lwp, fxsave);
709 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
712 pt_ucontext_to_fxsave(&tmbx.tm_context, fxsave);
718 pt_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *fpregs)
720 const td_thragent_t *ta = th->th_ta;
721 struct kse_thr_mailbox tmbx;
722 psaddr_t tcb_addr, tmbx_addr, ptr;
728 ret = pt_validate(th);
732 if (ta->map[th->th_tid].type == PT_LWP) {
733 ret = ps_lgetfpregs(ta->ph, ta->map[th->th_tid].lwp, fpregs);
737 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
738 &tcb_addr, sizeof(tcb_addr));
741 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
742 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
743 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
747 ret = ps_lgetfpregs(ta->ph, lwp, fpregs);
751 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
754 pt_ucontext_to_fpreg(&tmbx.tm_context, fpregs);
759 pt_thr_getgregs(const td_thrhandle_t *th, prgregset_t gregs)
761 const td_thragent_t *ta = th->th_ta;
762 struct kse_thr_mailbox tmbx;
763 psaddr_t tcb_addr, tmbx_addr, ptr;
769 ret = pt_validate(th);
773 if (ta->map[th->th_tid].type == PT_LWP) {
774 ret = ps_lgetregs(ta->ph,
775 ta->map[th->th_tid].lwp, gregs);
779 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
780 &tcb_addr, sizeof(tcb_addr));
783 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
784 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
785 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
789 ret = ps_lgetregs(ta->ph, lwp, gregs);
792 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
795 pt_ucontext_to_reg(&tmbx.tm_context, gregs);
801 pt_thr_setxmmregs(const td_thrhandle_t *th, const char *fxsave)
803 const td_thragent_t *ta = th->th_ta;
804 struct kse_thr_mailbox tmbx;
805 psaddr_t tcb_addr, tmbx_addr, ptr;
813 ret = pt_validate(th);
817 if (ta->map[th->th_tid].type == PT_LWP) {
818 ret = ps_lsetxmmregs(ta->ph, ta->map[th->th_tid].lwp, fxsave);
822 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
824 &tcb_addr, sizeof(tcb_addr));
827 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
828 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
829 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
833 ret = ps_lsetxmmregs(ta->ph, lwp, fxsave);
837 * Read a copy of context, this makes sure that registers
838 * not covered by structure reg won't be clobbered
840 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
844 pt_fxsave_to_ucontext(fxsave, &tmbx.tm_context);
845 ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
851 pt_thr_setfpregs(const td_thrhandle_t *th, const prfpregset_t *fpregs)
853 const td_thragent_t *ta = th->th_ta;
854 struct kse_thr_mailbox tmbx;
855 psaddr_t tcb_addr, tmbx_addr, ptr;
861 ret = pt_validate(th);
865 if (ta->map[th->th_tid].type == PT_LWP) {
866 ret = ps_lsetfpregs(ta->ph, ta->map[th->th_tid].lwp, fpregs);
870 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
872 &tcb_addr, sizeof(tcb_addr));
875 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
876 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
877 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
881 ret = ps_lsetfpregs(ta->ph, lwp, fpregs);
885 * Read a copy of context, this makes sure that registers
886 * not covered by structure reg won't be clobbered
888 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
892 pt_fpreg_to_ucontext(fpregs, &tmbx.tm_context);
893 ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
898 pt_thr_setgregs(const td_thrhandle_t *th, const prgregset_t gregs)
900 const td_thragent_t *ta = th->th_ta;
901 struct kse_thr_mailbox tmbx;
902 psaddr_t tcb_addr, tmbx_addr, ptr;
908 ret = pt_validate(th);
912 if (ta->map[th->th_tid].type == PT_LWP) {
913 ret = ps_lsetregs(ta->ph, ta->map[th->th_tid].lwp, gregs);
917 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
919 &tcb_addr, sizeof(tcb_addr));
922 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
923 ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
924 ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
928 ret = ps_lsetregs(ta->ph, lwp, gregs);
933 * Read a copy of context, make sure that registers
934 * not covered by structure reg won't be clobbered
936 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
939 pt_reg_to_ucontext(gregs, &tmbx.tm_context);
940 ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
945 pt_thr_event_enable(const td_thrhandle_t *th __unused, int en __unused)
952 pt_thr_set_event(const td_thrhandle_t *th __unused,
953 td_thr_events_t *setp __unused)
960 pt_thr_clear_event(const td_thrhandle_t *th __unused,
961 td_thr_events_t *setp __unused)
968 pt_thr_event_getmsg(const td_thrhandle_t *th __unused,
969 td_event_msg_t *msg __unused)
976 pt_thr_sstep(const td_thrhandle_t *th, int step)
978 const td_thragent_t *ta = th->th_ta;
979 struct kse_thr_mailbox tmbx;
981 psaddr_t tcb_addr, tmbx_addr;
988 ret = pt_validate(th);
992 if (ta->map[th->th_tid].type == PT_LWP)
995 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
997 &tcb_addr, sizeof(tcb_addr));
1001 /* Clear or set single step flag in thread mailbox */
1002 ret = ps_pread(ta->ph,
1003 tcb_addr + ta->thread_off_tmbx +
1004 offsetof(struct kse_thr_mailbox, tm_dflags),
1005 &dflags, sizeof(uint32_t));
1009 dflags |= TMDF_SSTEP;
1011 dflags &= ~TMDF_SSTEP;
1012 ret = ps_pwrite(ta->ph,
1013 tcb_addr + ta->thread_off_tmbx +
1014 offsetof(struct kse_thr_mailbox, tm_dflags),
1015 &dflags, sizeof(uint32_t));
1019 ret = ps_pread(ta->ph,
1020 tcb_addr + ta->thread_off_tmbx +
1021 offsetof(struct kse_thr_mailbox, tm_lwp),
1022 &lwp, sizeof(lwpid_t));
1028 tmbx_addr = tcb_addr + ta->thread_off_tmbx;
1030 * context is in userland, some architectures store
1031 * single step status in registers, we should change
1034 ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
1036 pt_ucontext_to_reg(&tmbx.tm_context, ®s);
1037 /* only write out if it is really changed. */
1038 if (pt_reg_sstep(®s, step) != 0) {
1039 pt_reg_to_ucontext(®s, &tmbx.tm_context);
1040 ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx,
1048 pt_unmap_lwp(const td_thragent_t *ta, lwpid_t lwp)
1052 for (i = 0; i < ta->map_len; ++i) {
1053 if (ta->map[i].type == PT_LWP && ta->map[i].lwp == lwp) {
1054 ta->map[i].type = PT_NONE;
1061 pt_validate(const td_thrhandle_t *th)
1064 if (th->th_tid < 0 || th->th_tid >= th->th_ta->map_len ||
1065 th->th_ta->map[th->th_tid].type == PT_NONE)
1071 pt_thr_tls_get_addr(const td_thrhandle_t *th, psaddr_t _linkmap, size_t offset,
1074 const td_thragent_t *ta = th->th_ta;
1075 psaddr_t dtv_addr, obj_entry, tcb_addr;
1078 /* linkmap is a member of Obj_Entry */
1079 obj_entry = _linkmap - ta->thread_off_linkmap;
1081 /* get tlsindex of the object file */
1082 ret = ps_pread(ta->ph,
1083 obj_entry + ta->thread_off_tlsindex,
1084 &tls_index, sizeof(tls_index));
1088 /* get thread tcb */
1089 ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
1091 &tcb_addr, sizeof(tcb_addr));
1095 /* get dtv array address */
1096 ret = ps_pread(ta->ph, tcb_addr + ta->thread_off_dtv,
1097 &dtv_addr, sizeof(dtv_addr));
1100 /* now get the object's tls block base address */
1101 ret = ps_pread(ta->ph, dtv_addr + sizeof(void *) * (tls_index + 1),
1102 address, sizeof(*address));
1110 static struct ta_ops libpthread_db_ops = {
1112 .to_ta_clear_event = pt_ta_clear_event,
1113 .to_ta_delete = pt_ta_delete,
1114 .to_ta_event_addr = pt_ta_event_addr,
1115 .to_ta_event_getmsg = pt_ta_event_getmsg,
1116 .to_ta_map_id2thr = pt_ta_map_id2thr,
1117 .to_ta_map_lwp2thr = pt_ta_map_lwp2thr,
1118 .to_ta_new = pt_ta_new,
1119 .to_ta_set_event = pt_ta_set_event,
1120 .to_ta_thr_iter = pt_ta_thr_iter,
1121 .to_ta_tsd_iter = pt_ta_tsd_iter,
1122 .to_thr_clear_event = pt_thr_clear_event,
1123 .to_thr_dbresume = pt_thr_dbresume,
1124 .to_thr_dbsuspend = pt_thr_dbsuspend,
1125 .to_thr_event_enable = pt_thr_event_enable,
1126 .to_thr_event_getmsg = pt_thr_event_getmsg,
1127 .to_thr_old_get_info = pt_thr_old_get_info,
1128 .to_thr_get_info = pt_thr_get_info,
1129 .to_thr_getfpregs = pt_thr_getfpregs,
1130 .to_thr_getgregs = pt_thr_getgregs,
1131 .to_thr_set_event = pt_thr_set_event,
1132 .to_thr_setfpregs = pt_thr_setfpregs,
1133 .to_thr_setgregs = pt_thr_setgregs,
1134 .to_thr_validate = pt_thr_validate,
1135 .to_thr_tls_get_addr = pt_thr_tls_get_addr,
1137 /* FreeBSD specific extensions. */
1138 .to_thr_sstep = pt_thr_sstep,
1140 .to_thr_getxmmregs = pt_thr_getxmmregs,
1141 .to_thr_setxmmregs = pt_thr_setxmmregs,
1145 DATA_SET(__ta_ops, libpthread_db_ops);