lib/libthread_db/thread_db.c

   1 /*
   2  * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   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.
  13  *
  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
  24  * SUCH DAMAGE.
  25  *
  26  * $DragonFly: src/lib/libthread_db/thread_db.c,v 1.1 2005/05/07 11:25:44 davidxu Exp $
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #include <proc_service.h>
  31 #include <stddef.h>
  32 #include <thread_db.h>
  33 #include <unistd.h>
  34
  35 #include "thread_db_int.h"
  36
  37 struct td_thragent
  38 {
  39         TD_THRAGENT_FIELDS;
  40 };
  41
  42 static TAILQ_HEAD(, td_thragent) proclist = TAILQ_HEAD_INITIALIZER(proclist);
  43
  44 extern struct ta_ops libthread_xu_ops;
  45
  46 static struct ta_ops *ops[] = {
  47         &libthread_xu_ops,
  48 };
  49
  50 td_err_e
  51 td_init(void)
  52 {
  53         td_err_e ret, tmp;
  54         size_t i;
  55
  56         ret = 0;
  57         for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
  58                 if (ops[i]->to_init != NULL) {
  59                         tmp = ops[i]->to_init();
  60                         if (tmp != TD_OK)
  61                                 ret = tmp;
  62                 }
  63         }
  64         return (ret);
  65 }
  66
  67 td_err_e
  68 td_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *events)
  69 {
  70         return (ta->ta_ops->to_ta_clear_event(ta, events));
  71 }
  72
  73 td_err_e
  74 td_ta_delete(td_thragent_t *ta)
  75 {
  76         TAILQ_REMOVE(&proclist, ta, ta_next);
  77         return (ta->ta_ops->to_ta_delete(ta));
  78 }
  79
  80 td_err_e
  81 td_ta_event_addr(const td_thragent_t *ta, td_event_e event, td_notify_t *ptr)
  82 {
  83         return (ta->ta_ops->to_ta_event_addr(ta, event, ptr));
  84 }
  85
  86 td_err_e
  87 td_ta_event_getmsg(const td_thragent_t *ta, td_event_msg_t *msg)
  88 {
  89         return (ta->ta_ops->to_ta_event_getmsg(ta, msg));
  90 }
  91
  92 td_err_e
  93 td_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
  94 {
  95         return (ta->ta_ops->to_ta_map_id2thr(ta, id, th));
  96 }
  97
  98 td_err_e
  99 td_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
 100 {
 101         return (ta->ta_ops->to_ta_map_lwp2thr(ta, lwpid, th));
 102 }
 103
 104 td_err_e
 105 td_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
 106 {
 107         size_t i;
 108
 109         for (i = 0; i < sizeof(ops)/sizeof(ops[0]); ++i) {
 110                 if (ops[i]->to_ta_new(ph, pta) == TD_OK) {
 111                         TAILQ_INSERT_HEAD(&proclist, *pta, ta_next);
 112                         (*pta)->ta_ops = ops[i];
 113                         return (TD_OK);
 114                 }
 115         }
 116         return (TD_NOLIBTHREAD);
 117 }
 118
 119 td_err_e
 120 td_ta_set_event(const td_thragent_t *ta, td_thr_events_t *events)
 121 {
 122         return (ta->ta_ops->to_ta_set_event(ta, events));
 123 }
 124
 125 td_err_e
 126 td_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *callback,
 127     void *cbdata_p, td_thr_state_e state, int ti_pri, sigset_t *ti_sigmask_p,
 128     unsigned int ti_user_flags)
 129 {
 130         return (ta->ta_ops->to_ta_thr_iter(ta, callback, cbdata_p, state,
 131                     ti_pri, ti_sigmask_p, ti_user_flags));
 132 }
 133
 134 td_err_e
 135 td_ta_tsd_iter(const td_thragent_t *ta, td_key_iter_f *callback,
 136     void *cbdata_p)
 137 {
 138         return (ta->ta_ops->to_ta_tsd_iter(ta, callback, cbdata_p));
 139 }
 140
 141 td_err_e
 142 td_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *events)
 143 {
 144         const td_thragent_t *ta = th->th_ta;
 145         return (ta->ta_ops->to_thr_clear_event(th, events));
 146 }
 147
 148 td_err_e
 149 td_thr_dbresume(const td_thrhandle_t *th)
 150 {
 151         const td_thragent_t *ta = th->th_ta;
 152         return (ta->ta_ops->to_thr_dbresume(th));
 153 }
 154
 155 td_err_e
 156 td_thr_dbsuspend(const td_thrhandle_t *th)
 157 {
 158         const td_thragent_t *ta = th->th_ta;
 159         return (ta->ta_ops->to_thr_dbsuspend(th));
 160 }
 161
 162 td_err_e
 163 td_thr_event_enable(const td_thrhandle_t *th, int en)
 164 {
 165         const td_thragent_t *ta = th->th_ta;
 166         return (ta->ta_ops->to_thr_event_enable(th, en));
 167 }
 168
 169 td_err_e
 170 td_thr_event_getmsg(const td_thrhandle_t *th, td_event_msg_t *msg)
 171 {
 172         const td_thragent_t *ta = th->th_ta;
 173         return (ta->ta_ops->to_thr_event_getmsg(th, msg));
 174 }
 175
 176 td_err_e
 177 td_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *info)
 178 {
 179         const td_thragent_t *ta = th->th_ta;
 180         return (ta->ta_ops->to_thr_get_info(th, info));
 181 }
 182
 183 td_err_e
 184 td_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *fpregset)
 185 {
 186         const td_thragent_t *ta = th->th_ta;
 187         return (ta->ta_ops->to_thr_getfpregs(th, fpregset));
 188 }
 189
 190 td_err_e
 191 td_thr_getgregs(const td_thrhandle_t *th, prgregset_t gregs)
 192 {
 193         const td_thragent_t *ta = th->th_ta;
 194         return (ta->ta_ops->to_thr_getgregs(th, gregs));
 195 }
 196
 197 td_err_e
 198 td_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *events)
 199 {
 200         const td_thragent_t *ta = th->th_ta;
 201         return (ta->ta_ops->to_thr_set_event(th, events));
 202 }
 203
 204 td_err_e
 205 td_thr_setfpregs(const td_thrhandle_t *th, const prfpregset_t *fpregs)
 206 {
 207         const td_thragent_t *ta = th->th_ta;
 208         return (ta->ta_ops->to_thr_setfpregs(th, fpregs));
 209 }
 210
 211 td_err_e
 212 td_thr_setgregs(const td_thrhandle_t *th, const prgregset_t gregs)
 213 {
 214         const td_thragent_t *ta = th->th_ta;
 215         return (ta->ta_ops->to_thr_setgregs(th, gregs));
 216 }
 217
 218 td_err_e
 219 td_thr_validate(const td_thrhandle_t *th)
 220 {
 221         const td_thragent_t *ta = th->th_ta;
 222         return (ta->ta_ops->to_thr_validate(th));
 223 }
 224
 225 td_err_e
 226 td_thr_tls_get_addr(const td_thrhandle_t *th, void *linkmap, size_t offset,
 227                     void **address)
 228 {
 229         const td_thragent_t *ta = th->th_ta;
 230         return (ta->ta_ops->to_thr_tls_get_addr(th, linkmap, offset, address));
 231 }