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.
1135 lines
28 KiB
C
1135 lines
28 KiB
C
/*
|
|
* Copyright (c) 2004 David Xu <davidxu@freebsd.org>
|
|
* All rights reserved.
|
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*
|
|
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <stddef.h>
|
|
#include <stdlib.h>
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#include <string.h>
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|
#include <unistd.h>
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#include <pthread.h>
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#include <sys/types.h>
|
|
#include <sys/linker_set.h>
|
|
#include <sys/ptrace.h>
|
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#include <proc_service.h>
|
|
#include <thread_db.h>
|
|
|
|
#include "libpthread_db.h"
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#include "kse.h"
|
|
|
|
#define P2T(c) ps2td(c)
|
|
|
|
static void pt_unmap_lwp(const td_thragent_t *ta, lwpid_t lwp);
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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 long
|
|
pt_map_thread(const td_thragent_t *const_ta, psaddr_t pt, enum pt_type type)
|
|
{
|
|
td_thragent_t *ta = __DECONST(td_thragent_t *, const_ta);
|
|
struct pt_map *new;
|
|
int i, first = -1;
|
|
|
|
/* leave zero out */
|
|
for (i = 1; i < ta->map_len; ++i) {
|
|
if (ta->map[i].type == PT_NONE) {
|
|
if (first == -1)
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|
first = i;
|
|
} else if (ta->map[i].type == type && ta->map[i].thr == pt) {
|
|
return (i);
|
|
}
|
|
}
|
|
|
|
if (first == -1) {
|
|
if (ta->map_len == 0) {
|
|
ta->map = calloc(20, sizeof(struct pt_map));
|
|
if (ta->map == NULL)
|
|
return (-1);
|
|
ta->map_len = 20;
|
|
first = 1;
|
|
} else {
|
|
new = realloc(ta->map,
|
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sizeof(struct pt_map) * ta->map_len * 2);
|
|
if (new == NULL)
|
|
return (-1);
|
|
memset(new + ta->map_len, '\0', sizeof(struct pt_map) *
|
|
ta->map_len);
|
|
first = ta->map_len;
|
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ta->map = new;
|
|
ta->map_len *= 2;
|
|
}
|
|
}
|
|
|
|
ta->map[first].type = type;
|
|
ta->map[first].thr = pt;
|
|
return (first);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_init(void)
|
|
{
|
|
pt_md_init();
|
|
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); \
|
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ret = TD_NOLIBTHREAD; \
|
|
goto error; \
|
|
}
|
|
|
|
#define LOOKUP_VAL(proc, sym, val) \
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|
ret = ps_pglobal_lookup(proc, NULL, sym, &vaddr);\
|
|
if (ret != 0) { \
|
|
TDBG("can not find symbol: %s\n", sym); \
|
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ret = TD_NOLIBTHREAD; \
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|
goto error; \
|
|
} \
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ret = ps_pread(proc, vaddr, val, sizeof(int)); \
|
|
if (ret != 0) { \
|
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TDBG("can not read value of %s\n", sym);\
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ret = TD_NOLIBTHREAD; \
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|
goto error; \
|
|
}
|
|
|
|
td_thragent_t *ta;
|
|
psaddr_t vaddr;
|
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int dbg;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ta = malloc(sizeof(td_thragent_t));
|
|
if (ta == NULL)
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return (TD_MALLOC);
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|
|
|
ta->ph = ph;
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|
ta->thread_activated = 0;
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|
ta->map = NULL;
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|
ta->map_len = 0;
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|
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|
LOOKUP_SYM(ph, "_libkse_debug", &ta->libkse_debug_addr);
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LOOKUP_SYM(ph, "_thread_list", &ta->thread_list_addr);
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LOOKUP_SYM(ph, "_thread_activated", &ta->thread_activated_addr);
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LOOKUP_SYM(ph, "_thread_active_threads",&ta->thread_active_threads_addr);
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LOOKUP_SYM(ph, "_thread_keytable", &ta->thread_keytable_addr);
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LOOKUP_VAL(ph, "_thread_off_dtv", &ta->thread_off_dtv);
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|
LOOKUP_VAL(ph, "_thread_off_kse_locklevel", &ta->thread_off_kse_locklevel);
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|
LOOKUP_VAL(ph, "_thread_off_kse", &ta->thread_off_kse);
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|
LOOKUP_VAL(ph, "_thread_off_tlsindex", &ta->thread_off_tlsindex);
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|
LOOKUP_VAL(ph, "_thread_off_attr_flags", &ta->thread_off_attr_flags);
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|
LOOKUP_VAL(ph, "_thread_size_key", &ta->thread_size_key);
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|
LOOKUP_VAL(ph, "_thread_off_tcb", &ta->thread_off_tcb);
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|
LOOKUP_VAL(ph, "_thread_off_linkmap", &ta->thread_off_linkmap);
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LOOKUP_VAL(ph, "_thread_off_tmbx", &ta->thread_off_tmbx);
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|
LOOKUP_VAL(ph, "_thread_off_thr_locklevel", &ta->thread_off_thr_locklevel);
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|
LOOKUP_VAL(ph, "_thread_off_next", &ta->thread_off_next);
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|
LOOKUP_VAL(ph, "_thread_off_state", &ta->thread_off_state);
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|
LOOKUP_VAL(ph, "_thread_max_keys", &ta->thread_max_keys);
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LOOKUP_VAL(ph, "_thread_off_key_allocated", &ta->thread_off_key_allocated);
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LOOKUP_VAL(ph, "_thread_off_key_destructor", &ta->thread_off_key_destructor);
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LOOKUP_VAL(ph, "_thread_state_running", &ta->thread_state_running);
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|
LOOKUP_VAL(ph, "_thread_state_zoombie", &ta->thread_state_zoombie);
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|
LOOKUP_VAL(ph, "_thread_off_sigmask", &ta->thread_off_sigmask);
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LOOKUP_VAL(ph, "_thread_off_sigpend", &ta->thread_off_sigpend);
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dbg = getpid();
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|
/*
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|
* If this fails it probably means we're debugging a core file and
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* can't write to it.
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*/
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ps_pwrite(ph, ta->libkse_debug_addr, &dbg, sizeof(int));
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*pta = ta;
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|
return (0);
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|
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|
error:
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|
free(ta);
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|
return (ret);
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|
}
|
|
|
|
static td_err_e
|
|
pt_ta_delete(td_thragent_t *ta)
|
|
{
|
|
int dbg;
|
|
|
|
TDBG_FUNC();
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|
|
|
dbg = 0;
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|
/*
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|
* Error returns from this write are not really a problem;
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* the process doesn't exist any more.
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*/
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ps_pwrite(ta->ph, ta->libkse_debug_addr, &dbg, sizeof(int));
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if (ta->map)
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|
free(ta->map);
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|
free(ta);
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|
return (TD_OK);
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|
}
|
|
|
|
static td_err_e
|
|
pt_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
|
|
{
|
|
prgregset_t gregs;
|
|
psaddr_t pt, tcb_addr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
if (id < 0 || id >= ta->map_len || ta->map[id].type == PT_NONE)
|
|
return (TD_NOTHR);
|
|
|
|
ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
if (ta->map[id].type == PT_LWP) {
|
|
/*
|
|
* if we are referencing a lwp, make sure it was not already
|
|
* mapped to user thread.
|
|
*/
|
|
while (pt != 0) {
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb,
|
|
&tcb_addr);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
ret = thr_pread_int(ta, tcb_addr + ta->thread_off_tmbx +
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|
offsetof(struct kse_thr_mailbox, tm_lwp), &lwp);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
/*
|
|
* If the lwp was already mapped to userland thread,
|
|
* we shouldn't reference it directly in future.
|
|
*/
|
|
if (lwp == ta->map[id].lwp) {
|
|
ta->map[id].type = PT_NONE;
|
|
return (TD_NOTHR);
|
|
}
|
|
/* get next thread */
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
}
|
|
/* check lwp */
|
|
ret = ps_lgetregs(ta->ph, ta->map[id].lwp, gregs);
|
|
if (ret != PS_OK) {
|
|
/* no longer exists */
|
|
ta->map[id].type = PT_NONE;
|
|
return (TD_NOTHR);
|
|
}
|
|
} else {
|
|
while (pt != 0 && ta->map[id].thr != pt) {
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb,
|
|
&tcb_addr);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
/* get next thread */
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
}
|
|
|
|
if (pt == 0) {
|
|
/* no longer exists */
|
|
ta->map[id].type = PT_NONE;
|
|
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)
|
|
{
|
|
psaddr_t pt, tcb_addr;
|
|
lwpid_t lwp1;
|
|
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_ptr(ta, pt + ta->thread_off_tcb, &tcb_addr);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
ret = thr_pread_int(ta, tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_lwp), &lwp1);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
if (lwp1 == lwp) {
|
|
th->th_ta = ta;
|
|
th->th_tid = pt_map_thread(ta, pt, PT_USER);
|
|
if (th->th_tid == -1)
|
|
return (TD_MALLOC);
|
|
pt_unmap_lwp(ta, lwp);
|
|
th->th_thread = pt;
|
|
return (TD_OK);
|
|
}
|
|
|
|
/* get next thread */
|
|
ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
}
|
|
|
|
return (TD_NOTHR);
|
|
}
|
|
|
|
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;
|
|
ps_err_e pserr;
|
|
int activated, ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
pserr = ps_pread(ta->ph, ta->thread_activated_addr, &activated,
|
|
sizeof(int));
|
|
if (pserr != PS_OK)
|
|
return (P2T(pserr));
|
|
if (!activated)
|
|
return (TD_OK);
|
|
|
|
ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
|
|
if (ret != 0)
|
|
return (TD_ERR);
|
|
while (pt != 0) {
|
|
th.th_ta = ta;
|
|
th.th_tid = pt_map_thread(ta, pt, PT_USER);
|
|
th.th_thread = pt;
|
|
/* should we unmap lwp here ? */
|
|
if (th.th_tid == -1)
|
|
return (TD_MALLOC);
|
|
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 __unused, td_event_e event __unused,
|
|
td_notify_t *ptr __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (TD_ERR);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_set_event(const td_thragent_t *ta __unused,
|
|
td_thr_events_t *events __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_clear_event(const td_thragent_t *ta __unused,
|
|
td_thr_events_t *events __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_ta_event_getmsg(const td_thragent_t *ta __unused,
|
|
td_event_msg_t *msg __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (TD_NOMSG);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_dbsuspend(const td_thrhandle_t *th, int suspend)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
uint32_t dflags;
|
|
int attrflags, locklevel, ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
if (suspend)
|
|
ret = ps_lstop(ta->ph, ta->map[th->th_tid].lwp);
|
|
else
|
|
ret = ps_lcontinue(ta->ph, ta->map[th->th_tid].lwp);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_attr_flags,
|
|
&attrflags, sizeof(attrflags));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
if (lwp != 0) {
|
|
/* don't suspend signal thread */
|
|
if (attrflags & 0x200)
|
|
return (0);
|
|
if (attrflags & PTHREAD_SCOPE_SYSTEM) {
|
|
/*
|
|
* don't suspend system scope thread if it is holding
|
|
* some low level locks
|
|
*/
|
|
ptr = ta->map[th->th_tid].thr + ta->thread_off_kse;
|
|
ret = ps_pread(ta->ph, ptr, &ptr, sizeof(ptr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph, ptr + ta->thread_off_kse_locklevel,
|
|
&locklevel, sizeof(int));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (locklevel <= 0) {
|
|
ptr = ta->map[th->th_tid].thr +
|
|
ta->thread_off_thr_locklevel;
|
|
ret = ps_pread(ta->ph, ptr, &locklevel,
|
|
sizeof(int));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
}
|
|
if (suspend) {
|
|
if (locklevel <= 0)
|
|
ret = ps_lstop(ta->ph, lwp);
|
|
} else {
|
|
ret = ps_lcontinue(ta->ph, lwp);
|
|
}
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
/* FALLTHROUGH */
|
|
} else {
|
|
struct ptrace_lwpinfo pl;
|
|
|
|
if (ps_linfo(ta->ph, lwp, (caddr_t)&pl))
|
|
return (TD_ERR);
|
|
if (suspend) {
|
|
if (!(pl.pl_flags & PL_FLAG_BOUND))
|
|
ret = ps_lstop(ta->ph, lwp);
|
|
} else {
|
|
ret = ps_lcontinue(ta->ph, lwp);
|
|
}
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
/* FALLTHROUGH */
|
|
}
|
|
}
|
|
/* read tm_dflags */
|
|
ret = ps_pread(ta->ph,
|
|
tmbx_addr + offsetof(struct kse_thr_mailbox, tm_dflags),
|
|
&dflags, sizeof(dflags));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (suspend)
|
|
dflags |= TMDF_SUSPEND;
|
|
else
|
|
dflags &= ~TMDF_SUSPEND;
|
|
ret = ps_pwrite(ta->ph,
|
|
tmbx_addr + offsetof(struct kse_thr_mailbox, tm_dflags),
|
|
&dflags, sizeof(dflags));
|
|
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(const td_thrhandle_t *th, td_thrinfo_t *info)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
struct ptrace_lwpinfo linfo;
|
|
psaddr_t tcb_addr;
|
|
uint32_t dflags;
|
|
lwpid_t lwp;
|
|
int state;
|
|
int ret;
|
|
int attrflags;
|
|
|
|
TDBG_FUNC();
|
|
|
|
bzero(info, sizeof(*info));
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
memset(info, 0, sizeof(*info));
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
info->ti_type = TD_THR_SYSTEM;
|
|
info->ti_lid = ta->map[th->th_tid].lwp;
|
|
info->ti_tid = th->th_tid;
|
|
info->ti_state = TD_THR_RUN;
|
|
info->ti_type = TD_THR_SYSTEM;
|
|
return (TD_OK);
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_attr_flags,
|
|
&attrflags, sizeof(attrflags));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_state,
|
|
&state, sizeof(state));
|
|
ret = ps_pread(ta->ph,
|
|
tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_lwp),
|
|
&info->ti_lid, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph,
|
|
tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_dflags),
|
|
&dflags, sizeof(dflags));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
ret = ps_pread(ta->ph, tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_lwp), &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
info->ti_ta_p = th->th_ta;
|
|
info->ti_tid = th->th_tid;
|
|
|
|
if (attrflags & PTHREAD_SCOPE_SYSTEM) {
|
|
ret = ps_linfo(ta->ph, lwp, &linfo);
|
|
if (ret == PS_OK) {
|
|
info->ti_sigmask = linfo.pl_sigmask;
|
|
info->ti_pending = linfo.pl_siglist;
|
|
} else
|
|
return (ret);
|
|
} else {
|
|
ret = ps_pread(ta->ph,
|
|
ta->map[th->th_tid].thr + ta->thread_off_sigmask,
|
|
&info->ti_sigmask, sizeof(sigset_t));
|
|
if (ret)
|
|
return (ret);
|
|
ret = ps_pread(ta->ph,
|
|
ta->map[th->th_tid].thr + ta->thread_off_sigpend,
|
|
&info->ti_pending, sizeof(sigset_t));
|
|
if (ret)
|
|
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_db_suspended = ((dflags & TMDF_SUSPEND) != 0);
|
|
info->ti_type = TD_THR_USER;
|
|
return (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;
|
|
struct kse_thr_mailbox tmbx;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
return TD_ERR;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
ret = ps_lgetxmmregs(ta->ph, ta->map[th->th_tid].lwp, fxsave);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0) {
|
|
ret = ps_lgetxmmregs(ta->ph, lwp, fxsave);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
pt_ucontext_to_fxsave(&tmbx.tm_context, fxsave);
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
static td_err_e
|
|
pt_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *fpregs)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
struct kse_thr_mailbox tmbx;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
ret = ps_lgetfpregs(ta->ph, ta->map[th->th_tid].lwp, fpregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0) {
|
|
ret = ps_lgetfpregs(ta->ph, lwp, fpregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
pt_ucontext_to_fpreg(&tmbx.tm_context, fpregs);
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_getgregs(const td_thrhandle_t *th, prgregset_t gregs)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
struct kse_thr_mailbox tmbx;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
ret = ps_lgetregs(ta->ph,
|
|
ta->map[th->th_tid].lwp, gregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr + ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0) {
|
|
ret = ps_lgetregs(ta->ph, lwp, gregs);
|
|
return (P2T(ret));
|
|
}
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
pt_ucontext_to_reg(&tmbx.tm_context, gregs);
|
|
return (0);
|
|
}
|
|
|
|
#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;
|
|
struct kse_thr_mailbox tmbx;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
return TD_ERR;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
ret = ps_lsetxmmregs(ta->ph, ta->map[th->th_tid].lwp, fxsave);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0) {
|
|
ret = ps_lsetxmmregs(ta->ph, lwp, fxsave);
|
|
return (P2T(ret));
|
|
}
|
|
/*
|
|
* Read a copy of context, this makes sure that registers
|
|
* not covered by structure reg won't be clobbered
|
|
*/
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
pt_fxsave_to_ucontext(fxsave, &tmbx.tm_context);
|
|
ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
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;
|
|
struct kse_thr_mailbox tmbx;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
ret = ps_lsetfpregs(ta->ph, ta->map[th->th_tid].lwp, fpregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0) {
|
|
ret = ps_lsetfpregs(ta->ph, lwp, fpregs);
|
|
return (P2T(ret));
|
|
}
|
|
/*
|
|
* Read a copy of context, this makes sure that registers
|
|
* not covered by structure reg won't be clobbered
|
|
*/
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
pt_fpreg_to_ucontext(fpregs, &tmbx.tm_context);
|
|
ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
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;
|
|
struct kse_thr_mailbox tmbx;
|
|
psaddr_t tcb_addr, tmbx_addr, ptr;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP) {
|
|
ret = ps_lsetregs(ta->ph, ta->map[th->th_tid].lwp, gregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
ptr = tmbx_addr + offsetof(struct kse_thr_mailbox, tm_lwp);
|
|
ret = ps_pread(ta->ph, ptr, &lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0) {
|
|
ret = ps_lsetregs(ta->ph, lwp, gregs);
|
|
return (P2T(ret));
|
|
}
|
|
|
|
/*
|
|
* Read a copy of context, make sure that registers
|
|
* not covered by structure reg won't be clobbered
|
|
*/
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
pt_reg_to_ucontext(gregs, &tmbx.tm_context);
|
|
ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_event_enable(const td_thrhandle_t *th __unused, int en __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_set_event(const td_thrhandle_t *th __unused,
|
|
td_thr_events_t *setp __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_clear_event(const td_thrhandle_t *th __unused,
|
|
td_thr_events_t *setp __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (0);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_event_getmsg(const td_thrhandle_t *th __unused,
|
|
td_event_msg_t *msg __unused)
|
|
{
|
|
TDBG_FUNC();
|
|
return (TD_NOMSG);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_sstep(const td_thrhandle_t *th, int step)
|
|
{
|
|
const td_thragent_t *ta = th->th_ta;
|
|
struct kse_thr_mailbox tmbx;
|
|
struct reg regs;
|
|
psaddr_t tcb_addr, tmbx_addr;
|
|
uint32_t dflags;
|
|
lwpid_t lwp;
|
|
int ret;
|
|
|
|
TDBG_FUNC();
|
|
|
|
ret = pt_validate(th);
|
|
if (ret)
|
|
return (ret);
|
|
|
|
if (ta->map[th->th_tid].type == PT_LWP)
|
|
return (TD_BADTH);
|
|
|
|
ret = ps_pread(ta->ph, ta->map[th->th_tid].thr +
|
|
ta->thread_off_tcb,
|
|
&tcb_addr, sizeof(tcb_addr));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
|
|
/* Clear or set single step flag in thread mailbox */
|
|
ret = ps_pread(ta->ph,
|
|
tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_dflags),
|
|
&dflags, sizeof(uint32_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (step != 0)
|
|
dflags |= TMDF_SSTEP;
|
|
else
|
|
dflags &= ~TMDF_SSTEP;
|
|
ret = ps_pwrite(ta->ph,
|
|
tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_dflags),
|
|
&dflags, sizeof(uint32_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
/* Get lwp */
|
|
ret = ps_pread(ta->ph,
|
|
tcb_addr + ta->thread_off_tmbx +
|
|
offsetof(struct kse_thr_mailbox, tm_lwp),
|
|
&lwp, sizeof(lwpid_t));
|
|
if (ret != 0)
|
|
return (P2T(ret));
|
|
if (lwp != 0)
|
|
return (0);
|
|
|
|
tmbx_addr = tcb_addr + ta->thread_off_tmbx;
|
|
/*
|
|
* context is in userland, some architectures store
|
|
* single step status in registers, we should change
|
|
* these registers.
|
|
*/
|
|
ret = ps_pread(ta->ph, tmbx_addr, &tmbx, sizeof(tmbx));
|
|
if (ret == 0) {
|
|
pt_ucontext_to_reg(&tmbx.tm_context, ®s);
|
|
/* only write out if it is really changed. */
|
|
if (pt_reg_sstep(®s, step) != 0) {
|
|
pt_reg_to_ucontext(®s, &tmbx.tm_context);
|
|
ret = ps_pwrite(ta->ph, tmbx_addr, &tmbx,
|
|
sizeof(tmbx));
|
|
}
|
|
}
|
|
return (P2T(ret));
|
|
}
|
|
|
|
static void
|
|
pt_unmap_lwp(const td_thragent_t *ta, lwpid_t lwp)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ta->map_len; ++i) {
|
|
if (ta->map[i].type == PT_LWP && ta->map[i].lwp == lwp) {
|
|
ta->map[i].type = PT_NONE;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
pt_validate(const td_thrhandle_t *th)
|
|
{
|
|
|
|
if (th->th_tid < 0 || th->th_tid >= th->th_ta->map_len ||
|
|
th->th_ta->map[th->th_tid].type == PT_NONE)
|
|
return (TD_NOTHR);
|
|
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, ta->map[th->th_tid].thr +
|
|
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);
|
|
}
|
|
|
|
struct ta_ops libpthread_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_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, libpthread_db_ops);
|