03fad2ad5f
where critical. Some places still use ps_pread/ps_pwrite directly, but only need changed when byte-order comes into the picture. Also, change th_p in td_event_msg_t from a pointer type to psaddr_t, so that events also work when psaddr_t is widened.
435 lines
9.2 KiB
C
435 lines
9.2 KiB
C
/*
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* Copyright (c) 2004 David Xu <davidxu@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <proc_service.h>
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#include <stddef.h>
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#include <thread_db.h>
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#include <unistd.h>
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#include <sys/cdefs.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/linker_set.h>
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#include "thread_db_int.h"
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struct td_thragent
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{
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TD_THRAGENT_FIELDS;
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};
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static TAILQ_HEAD(, td_thragent) proclist = TAILQ_HEAD_INITIALIZER(proclist);
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SET_DECLARE(__ta_ops, struct ta_ops);
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td_err_e
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td_init(void)
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{
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td_err_e ret, tmp;
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struct ta_ops *ops_p, **ops_pp;
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ret = 0;
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SET_FOREACH(ops_pp, __ta_ops) {
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ops_p = *ops_pp;
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if (ops_p->to_init != NULL) {
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tmp = ops_p->to_init();
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if (tmp != TD_OK)
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ret = tmp;
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}
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}
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return (ret);
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}
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td_err_e
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td_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *events)
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{
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return (ta->ta_ops->to_ta_clear_event(ta, events));
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}
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td_err_e
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td_ta_delete(td_thragent_t *ta)
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{
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TAILQ_REMOVE(&proclist, ta, ta_next);
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return (ta->ta_ops->to_ta_delete(ta));
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}
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td_err_e
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td_ta_event_addr(const td_thragent_t *ta, td_event_e event, td_notify_t *ptr)
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{
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return (ta->ta_ops->to_ta_event_addr(ta, event, ptr));
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}
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td_err_e
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td_ta_event_getmsg(const td_thragent_t *ta, td_event_msg_t *msg)
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{
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return (ta->ta_ops->to_ta_event_getmsg(ta, msg));
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}
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td_err_e
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td_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
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{
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return (ta->ta_ops->to_ta_map_id2thr(ta, id, th));
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}
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td_err_e
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td_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
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{
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return (ta->ta_ops->to_ta_map_lwp2thr(ta, lwpid, th));
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}
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td_err_e
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td_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
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{
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struct ta_ops *ops_p, **ops_pp;
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SET_FOREACH(ops_pp, __ta_ops) {
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ops_p = *ops_pp;
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if (ops_p->to_ta_new(ph, pta) == TD_OK) {
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TAILQ_INSERT_HEAD(&proclist, *pta, ta_next);
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(*pta)->ta_ops = ops_p;
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return (TD_OK);
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}
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}
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return (TD_NOLIBTHREAD);
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}
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td_err_e
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td_ta_set_event(const td_thragent_t *ta, td_thr_events_t *events)
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{
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return (ta->ta_ops->to_ta_set_event(ta, events));
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}
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td_err_e
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td_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *callback,
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void *cbdata_p, td_thr_state_e state, int ti_pri, sigset_t *ti_sigmask_p,
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unsigned int ti_user_flags)
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{
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return (ta->ta_ops->to_ta_thr_iter(ta, callback, cbdata_p, state,
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ti_pri, ti_sigmask_p, ti_user_flags));
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}
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td_err_e
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td_ta_tsd_iter(const td_thragent_t *ta, td_key_iter_f *callback,
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void *cbdata_p)
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{
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return (ta->ta_ops->to_ta_tsd_iter(ta, callback, cbdata_p));
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}
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td_err_e
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td_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *events)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_clear_event(th, events));
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}
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td_err_e
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td_thr_dbresume(const td_thrhandle_t *th)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_dbresume(th));
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}
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td_err_e
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td_thr_dbsuspend(const td_thrhandle_t *th)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_dbsuspend(th));
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}
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td_err_e
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td_thr_event_enable(const td_thrhandle_t *th, int en)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_event_enable(th, en));
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}
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td_err_e
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td_thr_event_getmsg(const td_thrhandle_t *th, td_event_msg_t *msg)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_event_getmsg(th, msg));
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}
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td_err_e
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td_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *info)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_get_info(th, info));
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}
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#ifdef __i386__
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td_err_e
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td_thr_getxmmregs(const td_thrhandle_t *th, char *fxsave)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_getxmmregs(th, fxsave));
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}
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#endif
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td_err_e
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td_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *fpregset)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_getfpregs(th, fpregset));
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}
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td_err_e
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td_thr_getgregs(const td_thrhandle_t *th, prgregset_t gregs)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_getgregs(th, gregs));
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}
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td_err_e
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td_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *events)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_set_event(th, events));
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}
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#ifdef __i386__
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td_err_e
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td_thr_setxmmregs(const td_thrhandle_t *th, const char *fxsave)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_setxmmregs(th, fxsave));
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}
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#endif
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td_err_e
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td_thr_setfpregs(const td_thrhandle_t *th, const prfpregset_t *fpregs)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_setfpregs(th, fpregs));
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}
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td_err_e
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td_thr_setgregs(const td_thrhandle_t *th, const prgregset_t gregs)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_setgregs(th, gregs));
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}
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td_err_e
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td_thr_validate(const td_thrhandle_t *th)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_validate(th));
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}
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td_err_e
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td_thr_tls_get_addr(const td_thrhandle_t *th, psaddr_t linkmap, size_t offset,
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psaddr_t *address)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_tls_get_addr(th, linkmap, offset, address));
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}
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/* FreeBSD specific extensions. */
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td_err_e
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td_thr_sstep(const td_thrhandle_t *th, int step)
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{
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const td_thragent_t *ta = th->th_ta;
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return (ta->ta_ops->to_thr_sstep(th, step));
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}
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/*
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* Support functions for reading from and writing to the target
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* address space.
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*/
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static int
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thr_pread(struct ps_prochandle *ph, psaddr_t addr, uint64_t *val,
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u_int size, u_int byteorder)
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{
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uint8_t buf[sizeof(*val)];
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ps_err_e err;
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if (size > sizeof(buf))
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return (EOVERFLOW);
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err = ps_pread(ph, addr, buf, size);
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if (err != PS_OK)
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return (EFAULT);
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switch (byteorder) {
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case BIG_ENDIAN:
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switch (size) {
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case 1:
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*val = buf[0];
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break;
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case 2:
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*val = be16dec(buf);
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break;
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case 4:
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*val = be32dec(buf);
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break;
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case 8:
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*val = be64dec(buf);
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break;
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default:
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return (EINVAL);
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}
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break;
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case LITTLE_ENDIAN:
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switch (size) {
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case 1:
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*val = buf[0];
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break;
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case 2:
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*val = le16dec(buf);
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break;
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case 4:
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*val = le32dec(buf);
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break;
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case 8:
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*val = le64dec(buf);
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break;
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default:
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return (EINVAL);
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}
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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int
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thr_pread_int(const struct td_thragent *ta, psaddr_t addr, uint32_t *val)
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{
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uint64_t tmp;
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int error;
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error = thr_pread(ta->ph, addr, &tmp, sizeof(int), BYTE_ORDER);
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if (!error)
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*val = tmp;
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return (error);
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}
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int
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thr_pread_long(const struct td_thragent *ta, psaddr_t addr, uint64_t *val)
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{
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return (thr_pread(ta->ph, addr, val, sizeof(long), BYTE_ORDER));
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}
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int
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thr_pread_ptr(const struct td_thragent *ta, psaddr_t addr, psaddr_t *val)
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{
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uint64_t tmp;
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int error;
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error = thr_pread(ta->ph, addr, &tmp, sizeof(void *), BYTE_ORDER);
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if (!error)
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*val = tmp;
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return (error);
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}
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static int
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thr_pwrite(struct ps_prochandle *ph, psaddr_t addr, uint64_t val,
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u_int size, u_int byteorder)
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{
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uint8_t buf[sizeof(val)];
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ps_err_e err;
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if (size > sizeof(buf))
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return (EOVERFLOW);
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switch (byteorder) {
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case BIG_ENDIAN:
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switch (size) {
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case 1:
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buf[0] = (uint8_t)val;
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break;
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case 2:
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be16enc(buf, (uint16_t)val);
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break;
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case 4:
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be32enc(buf, (uint32_t)val);
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break;
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case 8:
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be64enc(buf, (uint64_t)val);
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break;
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default:
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return (EINVAL);
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}
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break;
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case LITTLE_ENDIAN:
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switch (size) {
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case 1:
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buf[0] = (uint8_t)val;
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break;
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case 2:
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le16enc(buf, (uint16_t)val);
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break;
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case 4:
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le32enc(buf, (uint32_t)val);
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break;
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case 8:
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le64enc(buf, (uint64_t)val);
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break;
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default:
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return (EINVAL);
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}
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break;
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default:
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return (EINVAL);
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}
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err = ps_pwrite(ph, addr, buf, size);
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return ((err != PS_OK) ? EFAULT : 0);
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}
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int
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thr_pwrite_int(const struct td_thragent *ta, psaddr_t addr, uint32_t val)
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{
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return (thr_pwrite(ta->ph, addr, val, sizeof(int), BYTE_ORDER));
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}
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int
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thr_pwrite_long(const struct td_thragent *ta, psaddr_t addr, uint64_t val)
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{
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return (thr_pwrite(ta->ph, addr, val, sizeof(long), BYTE_ORDER));
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}
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int
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thr_pwrite_ptr(const struct td_thragent *ta, psaddr_t addr, psaddr_t val)
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{
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return (thr_pwrite(ta->ph, addr, val, sizeof(void *), BYTE_ORDER));
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}
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