5e53a4f90f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
1149 lines
28 KiB
C
1149 lines
28 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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 <stddef.h>
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#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>
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#include <sys/linker_set.h>
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#include <sys/ptrace.h>
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#include <proc_service.h>
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#include <thread_db.h>
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#include "libpthread_db.h"
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#include "kse.h"
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#define P2T(c) ps2td(c)
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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);
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static int
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ps2td(int c)
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{
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switch (c) {
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case PS_OK:
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return TD_OK;
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case PS_ERR:
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return TD_ERR;
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case PS_BADPID:
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return TD_BADPH;
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case PS_BADLID:
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return TD_NOLWP;
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case PS_BADADDR:
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return TD_ERR;
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case PS_NOSYM:
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return TD_NOLIBTHREAD;
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case PS_NOFREGS:
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return TD_NOFPREGS;
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default:
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return TD_ERR;
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}
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}
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static long
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pt_map_thread(const td_thragent_t *const_ta, psaddr_t pt, enum pt_type type)
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{
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td_thragent_t *ta = __DECONST(td_thragent_t *, const_ta);
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struct pt_map *new;
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int first = -1;
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unsigned int i;
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/* leave zero out */
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for (i = 1; i < ta->map_len; ++i) {
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if (ta->map[i].type == PT_NONE) {
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if (first == -1)
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first = i;
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} else if (ta->map[i].type == type && ta->map[i].thr == pt) {
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return (i);
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}
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}
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if (first == -1) {
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if (ta->map_len == 0) {
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ta->map = calloc(20, sizeof(struct pt_map));
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if (ta->map == NULL)
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return (-1);
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ta->map_len = 20;
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first = 1;
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} else {
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new = reallocarray(ta->map, ta->map_len,
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2 * sizeof(struct pt_map));
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if (new == NULL)
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return (-1);
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memset(new + ta->map_len, '\0', ta->map_len *
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sizeof(struct pt_map));
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first = ta->map_len;
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ta->map = new;
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ta->map_len *= 2;
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}
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}
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ta->map[first].type = type;
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ta->map[first].thr = pt;
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return (first);
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}
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static td_err_e
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pt_init(void)
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{
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pt_md_init();
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return (0);
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}
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static td_err_e
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pt_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
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{
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#define LOOKUP_SYM(proc, sym, addr) \
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ret = ps_pglobal_lookup(proc, NULL, sym, addr); \
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if (ret != 0) { \
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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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}
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#define LOOKUP_VAL(proc, sym, val) \
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ret = ps_pglobal_lookup(proc, NULL, sym, &vaddr);\
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if (ret != 0) { \
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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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} \
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ret = ps_pread(proc, vaddr, val, sizeof(int)); \
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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; \
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}
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td_thragent_t *ta;
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psaddr_t vaddr;
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int dbg;
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int ret;
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TDBG_FUNC();
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ta = malloc(sizeof(td_thragent_t));
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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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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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error:
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free(ta);
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return (ret);
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}
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static td_err_e
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pt_ta_delete(td_thragent_t *ta)
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{
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int dbg;
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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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}
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static td_err_e
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pt_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
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{
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prgregset_t gregs;
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psaddr_t pt, tcb_addr;
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lwpid_t lwp;
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int ret;
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TDBG_FUNC();
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if (id < 0 || id >= (long)ta->map_len || ta->map[id].type == PT_NONE)
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return (TD_NOTHR);
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ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
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if (ret != 0)
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return (TD_ERR);
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if (ta->map[id].type == PT_LWP) {
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/*
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* if we are referencing a lwp, make sure it was not already
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* mapped to user thread.
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*/
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while (pt != 0) {
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ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb,
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&tcb_addr);
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if (ret != 0)
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return (TD_ERR);
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ret = thr_pread_int(ta, tcb_addr + ta->thread_off_tmbx +
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offsetof(struct kse_thr_mailbox, tm_lwp), &lwp);
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if (ret != 0)
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return (TD_ERR);
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/*
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* If the lwp was already mapped to userland thread,
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* we shouldn't reference it directly in future.
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*/
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if (lwp == ta->map[id].lwp) {
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ta->map[id].type = PT_NONE;
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return (TD_NOTHR);
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}
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/* get next thread */
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ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
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if (ret != 0)
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return (TD_ERR);
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}
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/* check lwp */
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ret = ps_lgetregs(ta->ph, ta->map[id].lwp, gregs);
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if (ret != PS_OK) {
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/* no longer exists */
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ta->map[id].type = PT_NONE;
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return (TD_NOTHR);
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}
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} else {
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while (pt != 0 && ta->map[id].thr != pt) {
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ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb,
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&tcb_addr);
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if (ret != 0)
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return (TD_ERR);
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/* get next thread */
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ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
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if (ret != 0)
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return (TD_ERR);
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}
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if (pt == 0) {
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/* no longer exists */
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ta->map[id].type = PT_NONE;
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return (TD_NOTHR);
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}
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}
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th->th_ta = ta;
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th->th_tid = id;
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th->th_thread = pt;
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return (TD_OK);
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}
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static td_err_e
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pt_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwp, td_thrhandle_t *th)
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{
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psaddr_t pt, tcb_addr;
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lwpid_t lwp1;
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int ret;
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TDBG_FUNC();
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ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
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if (ret != 0)
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return (TD_ERR);
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while (pt != 0) {
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ret = thr_pread_ptr(ta, pt + ta->thread_off_tcb, &tcb_addr);
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if (ret != 0)
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return (TD_ERR);
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ret = thr_pread_int(ta, tcb_addr + ta->thread_off_tmbx +
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offsetof(struct kse_thr_mailbox, tm_lwp), &lwp1);
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if (ret != 0)
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return (TD_ERR);
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if (lwp1 == lwp) {
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th->th_ta = ta;
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th->th_tid = pt_map_thread(ta, pt, PT_USER);
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if (th->th_tid == -1)
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return (TD_MALLOC);
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pt_unmap_lwp(ta, lwp);
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th->th_thread = pt;
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return (TD_OK);
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}
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/* get next thread */
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ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
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if (ret != 0)
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return (TD_ERR);
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}
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return (TD_NOTHR);
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}
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static td_err_e
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pt_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 __unused, int ti_pri __unused,
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sigset_t *ti_sigmask_p __unused, unsigned int ti_user_flags __unused)
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{
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td_thrhandle_t th;
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psaddr_t pt;
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ps_err_e pserr;
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int activated, ret;
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TDBG_FUNC();
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pserr = ps_pread(ta->ph, ta->thread_activated_addr, &activated,
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sizeof(int));
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if (pserr != PS_OK)
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return (P2T(pserr));
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if (!activated)
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return (TD_OK);
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ret = thr_pread_ptr(ta, ta->thread_list_addr, &pt);
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if (ret != 0)
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return (TD_ERR);
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while (pt != 0) {
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th.th_ta = ta;
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th.th_tid = pt_map_thread(ta, pt, PT_USER);
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th.th_thread = pt;
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/* should we unmap lwp here ? */
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if (th.th_tid == -1)
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return (TD_MALLOC);
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if ((*callback)(&th, cbdata_p))
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return (TD_DBERR);
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/* get next thread */
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ret = thr_pread_ptr(ta, pt + ta->thread_off_next, &pt);
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if (ret != 0)
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return (TD_ERR);
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}
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return (TD_OK);
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}
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static td_err_e
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pt_ta_tsd_iter(const td_thragent_t *ta, td_key_iter_f *ki, void *arg)
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{
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void *keytable;
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void *destructor;
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int i, ret, allocated;
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TDBG_FUNC();
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keytable = malloc(ta->thread_max_keys * ta->thread_size_key);
|
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if (keytable == NULL)
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return (TD_MALLOC);
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ret = ps_pread(ta->ph, (psaddr_t)ta->thread_keytable_addr, keytable,
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ta->thread_max_keys * ta->thread_size_key);
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if (ret != 0) {
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free(keytable);
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return (P2T(ret));
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}
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for (i = 0; i < ta->thread_max_keys; i++) {
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allocated = *(int *)(void *)((uintptr_t)keytable +
|
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i * ta->thread_size_key + ta->thread_off_key_allocated);
|
|
destructor = *(void **)(void *)((uintptr_t)keytable +
|
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i * ta->thread_size_key + ta->thread_off_key_destructor);
|
|
if (allocated) {
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|
ret = (ki)(i, destructor, arg);
|
|
if (ret != 0) {
|
|
free(keytable);
|
|
return (TD_DBERR);
|
|
}
|
|
}
|
|
}
|
|
free(keytable);
|
|
return (TD_OK);
|
|
}
|
|
|
|
static td_err_e
|
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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_old_get_info(const td_thrhandle_t *th, td_old_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);
|
|
}
|
|
|
|
static td_err_e
|
|
pt_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *info)
|
|
{
|
|
td_err_e e;
|
|
|
|
e = pt_thr_old_get_info(th, (td_old_thrinfo_t *)info);
|
|
bzero(&info->ti_siginfo, sizeof(info->ti_siginfo));
|
|
return (e);
|
|
}
|
|
|
|
#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)
|
|
{
|
|
unsigned 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 >= (long)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);
|
|
}
|
|
|
|
static 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_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, libpthread_db_ops);
|