mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 17:18:32 +00:00
![Warner Losh](/assets/img/avatar_default.png)
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
806 lines
19 KiB
C
806 lines
19 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2004 Marcel Moolenaar
|
|
* Copyright (c) 2005 David Xu
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <proc_service.h>
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/linker_set.h>
|
|
#include <sys/ptrace.h>
|
|
#include <thread_db.h>
|
|
#include <unistd.h>
|
|
|
|
#include "thread_db_int.h"
|
|
|
|
#define TERMINATED 1
|
|
|
|
struct td_thragent {
|
|
TD_THRAGENT_FIELDS;
|
|
psaddr_t libthr_debug_addr;
|
|
psaddr_t thread_list_addr;
|
|
psaddr_t thread_active_threads_addr;
|
|
psaddr_t thread_keytable_addr;
|
|
psaddr_t thread_last_event_addr;
|
|
psaddr_t thread_event_mask_addr;
|
|
psaddr_t thread_bp_create_addr;
|
|
psaddr_t thread_bp_death_addr;
|
|
int thread_off_dtv;
|
|
int thread_off_tlsindex;
|
|
int thread_off_attr_flags;
|
|
int thread_size_key;
|
|
int thread_off_tcb;
|
|
int thread_off_linkmap;
|
|
int thread_off_next;
|
|
int thread_off_state;
|
|
int thread_off_tid;
|
|
int thread_max_keys;
|
|
int thread_off_key_allocated;
|
|
int thread_off_key_destructor;
|
|
int thread_off_report_events;
|
|
int thread_off_event_mask;
|
|
int thread_off_event_buf;
|
|
int thread_state_zoombie;
|
|
int thread_state_running;
|
|
};
|
|
|
|
#define P2T(c) ps2td(c)
|
|
|
|
static int pt_validate(const td_thrhandle_t *th);
|
|
|
|
static int
|
|
ps2td(int c)
|
|
{
|
|
switch (c) {
|
|
case PS_OK:
|
|
return TD_OK;
|
|
case PS_ERR:
|
|
return TD_ERR;
|
|
case PS_BADPID:
|
|
return TD_BADPH;
|
|
case PS_BADLID:
|
|
return TD_NOLWP;
|
|
case PS_BADADDR:
|
|
return TD_ERR;
|
|
case PS_NOSYM:
|
|
return TD_NOLIBTHREAD;
|
|
case PS_NOFREGS:
|
|
return TD_NOFPREGS;
|
|
default:
|
|
return TD_ERR;
|
|
}
|
|
}
|
|
|
|
static td_err_e
|
|
pt_init(void)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
|
|
{
|
|
#define LOOKUP_SYM(proc, sym, addr) \
|
|
ret = ps_pglobal_lookup(proc, NULL, sym, addr); \
|
|
if (ret != 0) { \
|
|
TDBG("can not find symbol: %s\n", sym); \
|
|
ret = TD_NOLIBTHREAD; \
|
|
goto error; \
|
|
}
|
|
|
|
#define LOOKUP_VAL(proc, sym, val) \
|
|
ret = ps_pglobal_lookup(proc, NULL, sym, &vaddr);\
|
|
if (ret != 0) { \
|
|
TDBG("can not find symbol: %s\n", sym); \
|
|
ret = TD_NOLIBTHREAD; \
|
|
goto error; \
|
|
} \
|
|
ret = ps_pread(proc, vaddr, val, sizeof(int)); \
|
|
if (ret != 0) { \
|
|
TDBG("can not read value of %s\n", sym);\
|
|
ret = TD_NOLIBTHREAD; \
|
|
goto error; \
|
|
}
|
|
|
|
td_thragent_t *ta;
|
|
psaddr_t vaddr;
|
|
int dbg;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ta = malloc(sizeof(td_thragent_t));
|
|
if (ta == NULL)
|
|
return (TD_MALLOC);
|
|
|
|
ta->ph = ph;
|
|
|
|
LOOKUP_SYM(ph, "_libthr_debug", &ta->libthr_debug_addr);
|
|
LOOKUP_SYM(ph, "_thread_list", &ta->thread_list_addr);
|
|
LOOKUP_SYM(ph, "_thread_active_threads",&ta->thread_active_threads_addr);
|
|
LOOKUP_SYM(ph, "_thread_keytable", &ta->thread_keytable_addr);
|
|
LOOKUP_SYM(ph, "_thread_last_event", &ta->thread_last_event_addr);
|
|
LOOKUP_SYM(ph, "_thread_event_mask", &ta->thread_event_mask_addr);
|
|
LOOKUP_SYM(ph, "_thread_bp_create", &ta->thread_bp_create_addr);
|
|
LOOKUP_SYM(ph, "_thread_bp_death", &ta->thread_bp_death_addr);
|
|
LOOKUP_VAL(ph, "_thread_off_dtv", &ta->thread_off_dtv);
|
|
LOOKUP_VAL(ph, "_thread_off_tlsindex", &ta->thread_off_tlsindex);
|
|
LOOKUP_VAL(ph, "_thread_off_attr_flags", &ta->thread_off_attr_flags);
|
|
LOOKUP_VAL(ph, "_thread_size_key", &ta->thread_size_key);
|
|
LOOKUP_VAL(ph, "_thread_off_tcb", &ta->thread_off_tcb);
|
|
LOOKUP_VAL(ph, "_thread_off_tid", &ta->thread_off_tid);
|
|
LOOKUP_VAL(ph, "_thread_off_linkmap", &ta->thread_off_linkmap);
|
|
LOOKUP_VAL(ph, "_thread_off_next", &ta->thread_off_next);
|
|
LOOKUP_VAL(ph, "_thread_off_state", &ta->thread_off_state);
|
|
LOOKUP_VAL(ph, "_thread_max_keys", &ta->thread_max_keys);
|
|
LOOKUP_VAL(ph, "_thread_off_key_allocated", &ta->thread_off_key_allocated);
|
|
LOOKUP_VAL(ph, "_thread_off_key_destructor", &ta->thread_off_key_destructor);
|
|
LOOKUP_VAL(ph, "_thread_state_running", &ta->thread_state_running);
|
|
LOOKUP_VAL(ph, "_thread_state_zoombie", &ta->thread_state_zoombie);
|
|
LOOKUP_VAL(ph, "_thread_off_report_events", &ta->thread_off_report_events);
|
|
LOOKUP_VAL(ph, "_thread_off_event_mask", &ta->thread_off_event_mask);
|
|
LOOKUP_VAL(ph, "_thread_off_event_buf", &ta->thread_off_event_buf);
|
|
dbg = getpid();
|
|
/*
|
|
* If this fails it probably means we're debugging a core file and
|
|
* can't write to it.
|
|
*/
|
|
ps_pwrite(ph, ta->libthr_debug_addr, &dbg, sizeof(int));
|
|
*pta = ta;
|
|
return (0);
|
|
|
|
error:
|
|
free(ta);
|
|
return (ret);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_delete(td_thragent_t *ta)
|
|
{
|
|
int dbg;
|
|
|
|
TDBG_FUNC();
|
|
|
|
dbg = 0;
|
|
/*
|
|
* Error returns from this write are not really a problem;
|
|
* the process doesn't exist any more.
|
|
*/
|
|
ps_pwrite(ta->ph, ta->libthr_debug_addr, &dbg, sizeof(int));
|
|
free(ta);
|
|
return (TD_OK);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
|
|
{
|
|
psaddr_t pt;
|
|
int64_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
if (id == 0)
|
|
return (TD_NOTHR);
|
|
ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
/* Iterate through thread list to find pthread */
|
|
while (pt != 0) {
|
|
ret = thr_pread_long(ta, pt + ta->thread_off_tid, &lwp);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
if (lwp == id)
|
|
break;
|
|
/* get next thread */
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
}
|
|
if (pt == 0)
|
|
return (TD_NOTHR);
|
|
th->th_ta = ta;
|
|
th->th_tid = id;
|
|
th->th_thread = pt;
|
|
return (TD_OK);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwp, td_thrhandle_t *th)
|
|
{
|
|
return (pt_ta_map_id2thr(ta, lwp, th));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *callback,
|
|
void *cbdata_p, td_thr_state_e state __unused, int ti_pri __unused,
|
|
sigset_t *ti_sigmask_p __unused, unsigned int ti_user_flags __unused)
|
|
{
|
|
td_thrhandle_t th;
|
|
psaddr_t pt;
|
|
int64_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
while (pt != 0) {
|
|
ret = thr_pread_long(ta, pt + ta->thread_off_tid, &lwp);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
if (lwp != 0 && lwp != TERMINATED) {
|
|
th.th_ta = ta;
|
|
th.th_tid = (thread_t)lwp;
|
|
th.th_thread = pt;
|
|
if ((*callback)(&th, cbdata_p))
|
|
return (TD_DBERR);
|
|
}
|
|
/* get next thread */
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
}
|
|
return (TD_OK);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_tsd_iter(const td_thragent_t *ta, td_key_iter_f *ki, void *arg)
|
|
{
|
|
void *keytable;
|
|
void *destructor;
|
|
int i, ret, allocated;
|
|
|
|
TDBG_FUNC();
|
|
|
|
keytable = malloc(ta->thread_max_keys * ta->thread_size_key);
|
|
if (keytable == NULL)
|
|
return (TD_MALLOC);
|
|
ret = ps_pread(ta->ph, (psaddr_t)ta->thread_keytable_addr, keytable,
|
|
ta->thread_max_keys * ta->thread_size_key);
|
|
if (ret != 0) {
|
|
free(keytable);
|
|
return (P2T(ret));
|
|
}
|
|
for (i = 0; i < ta->thread_max_keys; i++) {
|
|
allocated = *(int *)(void *)((uintptr_t)keytable +
|
|
i * ta->thread_size_key + ta->thread_off_key_allocated);
|
|
destructor = *(void **)(void *)((uintptr_t)keytable +
|
|
i * ta->thread_size_key + ta->thread_off_key_destructor);
|
|
if (allocated) {
|
|
ret = (ki)(i, destructor, arg);
|
|
if (ret != 0) {
|
|
free(keytable);
|
|
return (TD_DBERR);
|
|
}
|
|
}
|
|
}
|
|
free(keytable);
|
|
return (TD_OK);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_event_addr(const td_thragent_t *ta, td_event_e event, td_notify_t *ptr)
|
|
{
|
|
|
|
TDBG_FUNC();
|
|
|
|
switch (event) {
|
|
case TD_CREATE:
|
|
ptr->type = NOTIFY_BPT;
|
|
ptr->u.bptaddr = ta->thread_bp_create_addr;
|
|
return (0);
|
|
case TD_DEATH:
|
|
ptr->type = NOTIFY_BPT;
|
|
ptr->u.bptaddr = ta->thread_bp_death_addr;
|
|
return (0);
|
|
default:
|
|
return (TD_ERR);
|
|
}
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_set_event(const td_thragent_t *ta, td_thr_events_t *events)
|
|
{
|
|
td_thr_events_t mask;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
ret = ps_pread(ta->ph, ta->thread_event_mask_addr, &mask,
|
|
sizeof(mask));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
mask |= *events;
|
|
ret = ps_pwrite(ta->ph, ta->thread_event_mask_addr, &mask,
|
|
sizeof(mask));
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *events)
|
|
{
|
|
td_thr_events_t mask;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
ret = ps_pread(ta->ph, ta->thread_event_mask_addr, &mask,
|
|
sizeof(mask));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
mask &= ~*events;
|
|
ret = ps_pwrite(ta->ph, ta->thread_event_mask_addr, &mask,
|
|
sizeof(mask));
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_event_getmsg(const td_thragent_t *ta, td_event_msg_t *msg)
|
|
{
|
|
static td_thrhandle_t handle;
|
|
|
|
psaddr_t pt;
|
|
td_thr_events_e tmp;
|
|
int64_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = thr_pread_ptr(ta, ta->thread_last_event_addr, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
if (pt == 0)
|
|
return (TD_NOMSG);
|
|
/*
|
|
* Take the event pointer, at the time, libthr only reports event
|
|
* once a time, so it is not a link list.
|
|
*/
|
|
thr_pwrite_ptr(ta, ta->thread_last_event_addr, 0);
|
|
|
|
/* Read event info */
|
|
ret = ps_pread(ta->ph, pt + ta->thread_off_event_buf, msg, sizeof(*msg));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (msg->event == 0)
|
|
return (TD_NOMSG);
|
|
/* Clear event */
|
|
tmp = 0;
|
|
ps_pwrite(ta->ph, pt + ta->thread_off_event_buf, &tmp, sizeof(tmp));
|
|
/* Convert event */
|
|
pt = msg->th_p;
|
|
ret = thr_pread_long(ta, pt + ta->thread_off_tid, &lwp);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
handle.th_ta = ta;
|
|
handle.th_tid = lwp;
|
|
handle.th_thread = pt;
|
|
msg->th_p = (uintptr_t)&handle;
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_dbsuspend(const td_thrhandle_t *th, int suspend)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (suspend)
|
|
ret = ps_lstop(ta->ph, th->th_tid);
|
|
else
|
|
ret = ps_lcontinue(ta->ph, th->th_tid);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_dbresume(const td_thrhandle_t *th)
|
|
{
|
|
TDBG_FUNC();
|
|
|
|
return pt_dbsuspend(th, 0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_dbsuspend(const td_thrhandle_t *th)
|
|
{
|
|
TDBG_FUNC();
|
|
|
|
return pt_dbsuspend(th, 1);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_validate(const td_thrhandle_t *th)
|
|
{
|
|
td_thrhandle_t temp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_ta_map_id2thr(th->th_ta, th->th_tid, &temp);
|
|
return (ret);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_get_info_common(const td_thrhandle_t *th, td_thrinfo_t *info, int old)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
struct ptrace_lwpinfo linfo;
|
|
int traceme;
|
|
int state;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
bzero(info, sizeof(*info));
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
ret = thr_pread_int(ta, th->th_thread + ta->thread_off_state, &state);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
ret = thr_pread_int(ta, th->th_thread + ta->thread_off_report_events,
|
|
&traceme);
|
|
info->ti_traceme = traceme;
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_event_mask,
|
|
&info->ti_events, sizeof(td_thr_events_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_tcb,
|
|
&info->ti_tls, sizeof(void *));
|
|
info->ti_lid = th->th_tid;
|
|
info->ti_tid = th->th_tid;
|
|
info->ti_thread = th->th_thread;
|
|
info->ti_ta_p = th->th_ta;
|
|
ret = ps_linfo(ta->ph, th->th_tid, &linfo);
|
|
if (ret == PS_OK) {
|
|
info->ti_sigmask = linfo.pl_sigmask;
|
|
info->ti_pending = linfo.pl_siglist;
|
|
if (!old) {
|
|
if ((linfo.pl_flags & PL_FLAG_SI) != 0)
|
|
info->ti_siginfo = linfo.pl_siginfo;
|
|
else
|
|
bzero(&info->ti_siginfo,
|
|
sizeof(info->ti_siginfo));
|
|
}
|
|
} else
|
|
return (ret);
|
|
if (state == ta->thread_state_running)
|
|
info->ti_state = TD_THR_RUN;
|
|
else if (state == ta->thread_state_zoombie)
|
|
info->ti_state = TD_THR_ZOMBIE;
|
|
else
|
|
info->ti_state = TD_THR_SLEEP;
|
|
info->ti_type = TD_THR_USER;
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_old_get_info(const td_thrhandle_t *th, td_old_thrinfo_t *info)
|
|
{
|
|
|
|
return (pt_thr_get_info_common(th, (td_thrinfo_t *)info, 1));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *info)
|
|
{
|
|
|
|
return (pt_thr_get_info_common(th, info, 0));
|
|
}
|
|
|
|
#ifdef __i386__
|
|
static td_err_e
|
|
pt_thr_getxmmregs(const td_thrhandle_t *th, char *fxsave)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
ret = ps_lgetxmmregs(ta->ph, th->th_tid, fxsave);
|
|
return (P2T(ret));
|
|
}
|
|
#endif
|
|
|
|
static td_err_e
|
|
pt_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *fpregs)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
ret = ps_lgetfpregs(ta->ph, th->th_tid, fpregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_getgregs(const td_thrhandle_t *th, prgregset_t gregs)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
ret = ps_lgetregs(ta->ph, th->th_tid, gregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
#ifdef __i386__
|
|
static td_err_e
|
|
pt_thr_setxmmregs(const td_thrhandle_t *th, const char *fxsave)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
ret = ps_lsetxmmregs(ta->ph, th->th_tid, fxsave);
|
|
return (P2T(ret));
|
|
}
|
|
#endif
|
|
|
|
static td_err_e
|
|
pt_thr_setfpregs(const td_thrhandle_t *th, const prfpregset_t *fpregs)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
ret = ps_lsetfpregs(ta->ph, th->th_tid, fpregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_setgregs(const td_thrhandle_t *th, const prgregset_t gregs)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
ret = ps_lsetregs(ta->ph, th->th_tid, gregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_event_enable(const td_thrhandle_t *th, int en)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
ret = ps_pwrite(ta->ph, th->th_thread + ta->thread_off_report_events,
|
|
&en, sizeof(int));
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *setp)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
td_thr_events_t mask;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_event_mask,
|
|
&mask, sizeof(mask));
|
|
mask |= *setp;
|
|
ret = ps_pwrite(ta->ph, th->th_thread + ta->thread_off_event_mask,
|
|
&mask, sizeof(mask));
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *setp)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
td_thr_events_t mask;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_event_mask,
|
|
&mask, sizeof(mask));
|
|
mask &= ~*setp;
|
|
ret = ps_pwrite(ta->ph, th->th_thread + ta->thread_off_event_mask,
|
|
&mask, sizeof(mask));
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_event_getmsg(const td_thrhandle_t *th, td_event_msg_t *msg)
|
|
{
|
|
static td_thrhandle_t handle;
|
|
const td_thragent_t *ta = th->th_ta;
|
|
psaddr_t pt, pt_temp;
|
|
int64_t lwp;
|
|
int ret;
|
|
td_thr_events_e tmp;
|
|
|
|
TDBG_FUNC();
|
|
pt = th->th_thread;
|
|
ret = thr_pread_ptr(ta, ta->thread_last_event_addr, &pt_temp);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
/* Get event */
|
|
ret = ps_pread(ta->ph, pt + ta->thread_off_event_buf, msg, sizeof(*msg));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (msg->event == 0)
|
|
return (TD_NOMSG);
|
|
/*
|
|
* Take the event pointer, at the time, libthr only reports event
|
|
* once a time, so it is not a link list.
|
|
*/
|
|
if (pt == pt_temp)
|
|
thr_pwrite_ptr(ta, ta->thread_last_event_addr, 0);
|
|
|
|
/* Clear event */
|
|
tmp = 0;
|
|
ps_pwrite(ta->ph, pt + ta->thread_off_event_buf, &tmp, sizeof(tmp));
|
|
/* Convert event */
|
|
pt = msg->th_p;
|
|
ret = thr_pread_long(ta, pt + ta->thread_off_tid, &lwp);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
handle.th_ta = ta;
|
|
handle.th_tid = lwp;
|
|
handle.th_thread = pt;
|
|
msg->th_p = (uintptr_t)&handle;
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_sstep(const td_thrhandle_t *th, int step __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
|
|
return pt_validate(th);
|
|
}
|
|
|
|
static int
|
|
pt_validate(const td_thrhandle_t *th)
|
|
{
|
|
|
|
if (th->th_tid == 0 || th->th_thread == 0)
|
|
return (TD_ERR);
|
|
return (TD_OK);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_tls_get_addr(const td_thrhandle_t *th, psaddr_t _linkmap, size_t offset,
|
|
psaddr_t *address)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
psaddr_t dtv_addr, obj_entry, tcb_addr;
|
|
int tls_index, ret;
|
|
|
|
/* linkmap is a member of Obj_Entry */
|
|
obj_entry = _linkmap - ta->thread_off_linkmap;
|
|
|
|
/* get tlsindex of the object file */
|
|
ret = ps_pread(ta->ph,
|
|
obj_entry + ta->thread_off_tlsindex,
|
|
&tls_index, sizeof(tls_index));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
/* get thread tcb */
|
|
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
/* get dtv array address */
|
|
ret = ps_pread(ta->ph, tcb_addr + ta->thread_off_dtv,
|
|
&dtv_addr, sizeof(dtv_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
/* now get the object's tls block base address */
|
|
ret = ps_pread(ta->ph, dtv_addr + sizeof(void *) * (tls_index+1),
|
|
address, sizeof(*address));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
*address += offset;
|
|
return (TD_OK);
|
|
}
|
|
|
|
static struct ta_ops libthr_db_ops = {
|
|
.to_init = pt_init,
|
|
.to_ta_clear_event = pt_ta_clear_event,
|
|
.to_ta_delete = pt_ta_delete,
|
|
.to_ta_event_addr = pt_ta_event_addr,
|
|
.to_ta_event_getmsg = pt_ta_event_getmsg,
|
|
.to_ta_map_id2thr = pt_ta_map_id2thr,
|
|
.to_ta_map_lwp2thr = pt_ta_map_lwp2thr,
|
|
.to_ta_new = pt_ta_new,
|
|
.to_ta_set_event = pt_ta_set_event,
|
|
.to_ta_thr_iter = pt_ta_thr_iter,
|
|
.to_ta_tsd_iter = pt_ta_tsd_iter,
|
|
.to_thr_clear_event = pt_thr_clear_event,
|
|
.to_thr_dbresume = pt_thr_dbresume,
|
|
.to_thr_dbsuspend = pt_thr_dbsuspend,
|
|
.to_thr_event_enable = pt_thr_event_enable,
|
|
.to_thr_event_getmsg = pt_thr_event_getmsg,
|
|
.to_thr_old_get_info = pt_thr_old_get_info,
|
|
.to_thr_get_info = pt_thr_get_info,
|
|
.to_thr_getfpregs = pt_thr_getfpregs,
|
|
.to_thr_getgregs = pt_thr_getgregs,
|
|
.to_thr_set_event = pt_thr_set_event,
|
|
.to_thr_setfpregs = pt_thr_setfpregs,
|
|
.to_thr_setgregs = pt_thr_setgregs,
|
|
.to_thr_validate = pt_thr_validate,
|
|
.to_thr_tls_get_addr = pt_thr_tls_get_addr,
|
|
|
|
/* FreeBSD specific extensions. */
|
|
.to_thr_sstep = pt_thr_sstep,
|
|
#ifdef __i386__
|
|
.to_thr_getxmmregs = pt_thr_getxmmregs,
|
|
.to_thr_setxmmregs = pt_thr_setxmmregs,
|
|
#endif
|
|
};
|
|
|
|
DATA_SET(__ta_ops, libthr_db_ops);
|