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Removed
Link Here
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/* $FreeBSD$ */ |
| 2 |
/* FreeBSD libthread_db assisted debugging support. |
| 3 |
Copyright 1999, 2000, 2001 Free Software Foundation, Inc. |
| 4 |
|
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This file is part of GDB. |
| 6 |
|
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This program is free software; you can redistribute it and/or modify |
| 8 |
it under the terms of the GNU General Public License as published by |
| 9 |
the Free Software Foundation; either version 2 of the License, or |
| 10 |
(at your option) any later version. |
| 11 |
|
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This program is distributed in the hope that it will be useful, |
| 13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
GNU General Public License for more details. |
| 16 |
|
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You should have received a copy of the GNU General Public License |
| 18 |
along with this program; if not, write to the Free Software |
| 19 |
Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 |
Boston, MA 02111-1307, USA. */ |
| 21 |
#include <sys/param.h> |
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#include <sys/sysctl.h> |
| 23 |
#include <sys/user.h> |
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#include <libutil.h> |
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|
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#include <dlfcn.h> |
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#include <sys/types.h> |
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#include <sys/ptrace.h> |
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#include <signal.h> |
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|
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#include "proc_service.h" |
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#include "thread_db.h" |
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|
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#include "defs.h" |
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#include "bfd.h" |
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#include "elf-bfd.h" |
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#include "gdb_assert.h" |
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#include "gdbcore.h" |
| 39 |
#include "gdbthread.h" |
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#include "inferior.h" |
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#include "objfiles.h" |
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#include "regcache.h" |
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#include "symfile.h" |
| 44 |
#include "symtab.h" |
| 45 |
#include "target.h" |
| 46 |
#include "observer.h" |
| 47 |
#include "gdbcmd.h" |
| 48 |
#include "gregset.h" |
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#ifdef PT_GETXMMREGS |
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#include "i387-tdep.h" |
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#endif |
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|
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#define LIBTHREAD_DB_SO "libthread_db.so" |
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|
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struct private_thread_info |
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{ |
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char *lwp_name; |
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}; |
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|
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struct ps_prochandle |
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{ |
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pid_t pid; |
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}; |
| 64 |
|
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/* Defining the prototype of _initialize_thread_db to remove warning */ |
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extern initialize_file_ftype _initialize_thread_db; |
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|
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/* This module's target vectors. */ |
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static struct target_ops fbsd_thread_ops; |
| 70 |
|
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/* Non-zero if there is a thread module */ |
| 72 |
static int fbsd_thread_present; |
| 73 |
|
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/* Non-zero if we're using this module's target vector. */ |
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static int fbsd_thread_active; |
| 76 |
|
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/* Non-zero if we have to keep this module's target vector active |
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across re-runs. */ |
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static int keep_thread_db; |
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|
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/* Structure that identifies the child process for the |
| 82 |
<proc_service.h> interface. */ |
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static struct ps_prochandle proc_handle; |
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|
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/* Connection to the libthread_db library. */ |
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static td_thragent_t *thread_agent; |
| 87 |
|
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/* The last thread we are single stepping */ |
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static ptid_t last_single_step_thread; |
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|
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|
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/* Pointers to the libthread_db functions. */ |
| 93 |
static td_err_e (*td_init_p) (void); |
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|
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static td_err_e (*td_ta_new_p) (struct ps_prochandle *ps, td_thragent_t **ta); |
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static td_err_e (*td_ta_delete_p) (td_thragent_t *); |
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static td_err_e (*td_ta_map_id2thr_p) (const td_thragent_t *ta, thread_t pt, |
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td_thrhandle_t *__th); |
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static td_err_e (*td_ta_map_lwp2thr_p) (const td_thragent_t *ta, lwpid_t lwpid, |
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td_thrhandle_t *th); |
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static td_err_e (*td_ta_thr_iter_p) (const td_thragent_t *ta, |
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td_thr_iter_f *callback, |
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void *cbdata_p, td_thr_state_e state, |
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int ti_pri, sigset_t *ti_sigmask_p, |
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unsigned int ti_user_flags); |
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static td_err_e (*td_ta_event_addr_p) (const td_thragent_t *ta, |
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td_event_e event, td_notify_t *ptr); |
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static td_err_e (*td_ta_set_event_p) (const td_thragent_t *ta, |
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td_thr_events_t *event); |
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static td_err_e (*td_ta_event_getmsg_p) (const td_thragent_t *ta, |
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td_event_msg_t *msg); |
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static td_err_e (*td_thr_get_info_p) (const td_thrhandle_t *th, |
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td_thrinfo_t *infop); |
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#ifdef PT_GETXMMREGS |
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static td_err_e (*td_thr_getxmmregs_p) (const td_thrhandle_t *th, |
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char *regset); |
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#endif |
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static td_err_e (*td_thr_getfpregs_p) (const td_thrhandle_t *th, |
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prfpregset_t *regset); |
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static td_err_e (*td_thr_getgregs_p) (const td_thrhandle_t *th, |
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prgregset_t gregs); |
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#ifdef PT_GETXMMREGS |
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static td_err_e (*td_thr_setxmmregs_p) (const td_thrhandle_t *th, |
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const char *fpregs); |
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#endif |
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static td_err_e (*td_thr_setfpregs_p) (const td_thrhandle_t *th, |
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const prfpregset_t *fpregs); |
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static td_err_e (*td_thr_setgregs_p) (const td_thrhandle_t *th, |
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prgregset_t gregs); |
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static td_err_e (*td_thr_event_enable_p) (const td_thrhandle_t *th, int event); |
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|
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static td_err_e (*td_thr_sstep_p) (td_thrhandle_t *th, int step); |
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|
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static td_err_e (*td_ta_tsd_iter_p) (const td_thragent_t *ta, |
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td_key_iter_f *func, void *data); |
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static td_err_e (*td_thr_tls_get_addr_p) (const td_thrhandle_t *th, |
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void *map_address, |
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size_t offset, void **address); |
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static td_err_e (*td_thr_dbsuspend_p) (const td_thrhandle_t *); |
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static td_err_e (*td_thr_dbresume_p) (const td_thrhandle_t *); |
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|
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static CORE_ADDR td_create_bp_addr; |
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|
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/* Location of the thread death event breakpoint. */ |
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static CORE_ADDR td_death_bp_addr; |
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|
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/* Prototypes for local functions. */ |
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static void fbsd_find_lwp_name(long lwpid, struct private_thread_info *info); |
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static void fbsd_thread_update_thread_list (struct target_ops *ops); |
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static int fbsd_thread_alive (struct target_ops *ops, ptid_t ptid); |
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static void attach_thread (ptid_t ptid, const td_thrhandle_t *th_p, |
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const td_thrinfo_t *ti_p, int verbose); |
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static void fbsd_thread_detach (struct target_ops *ops, const char *args, |
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int from_tty); |
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|
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CORE_ADDR fbsd_thread_get_local_address(struct target_ops *ops, |
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ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset); |
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|
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/* Building process ids. */ |
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|
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#define GET_PID(ptid) ptid_get_pid (ptid) |
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#define GET_LWP(ptid) ptid_get_lwp (ptid) |
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#define GET_THREAD(ptid) ptid_get_tid (ptid) |
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|
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#define IS_LWP(ptid) (GET_LWP (ptid) != 0) |
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#define IS_THREAD(ptid) (GET_THREAD (ptid) != 0) |
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|
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#define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) |
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#define BUILD_THREAD(tid, pid) ptid_build (pid, 0, tid) |
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|
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static void |
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free_private_thread_info(struct private_thread_info *info) |
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{ |
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xfree(info->lwp_name); |
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xfree(info); |
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} |
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|
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static char * |
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thread_db_err_str (td_err_e err) |
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{ |
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static char buf[64]; |
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|
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switch (err) |
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{ |
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case TD_OK: |
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return "generic 'call succeeded'"; |
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case TD_ERR: |
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return "generic error"; |
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case TD_NOTHR: |
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return "no thread to satisfy query"; |
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case TD_NOSV: |
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return "no sync handle to satisfy query"; |
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case TD_NOLWP: |
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return "no LWP to satisfy query"; |
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case TD_BADPH: |
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return "invalid process handle"; |
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case TD_BADTH: |
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return "invalid thread handle"; |
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case TD_BADSH: |
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return "invalid synchronization handle"; |
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case TD_BADTA: |
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return "invalid thread agent"; |
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case TD_BADKEY: |
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return "invalid key"; |
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case TD_NOMSG: |
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return "no event message for getmsg"; |
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case TD_NOFPREGS: |
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return "FPU register set not available"; |
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case TD_NOLIBTHREAD: |
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return "application not linked with libthread"; |
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case TD_NOEVENT: |
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return "requested event is not supported"; |
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case TD_NOCAPAB: |
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return "capability not available"; |
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case TD_DBERR: |
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return "debugger service failed"; |
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case TD_NOAPLIC: |
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return "operation not applicable to"; |
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case TD_NOTSD: |
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return "no thread-specific data for this thread"; |
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case TD_MALLOC: |
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return "malloc failed"; |
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case TD_PARTIALREG: |
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return "only part of register set was written/read"; |
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case TD_NOXREGS: |
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return "X register set not available for this thread"; |
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default: |
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snprintf (buf, sizeof (buf), "unknown thread_db error '%d'", err); |
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return buf; |
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} |
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} |
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|
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static char * |
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thread_db_state_str (td_thr_state_e state) |
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{ |
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static char buf[64]; |
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|
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switch (state) |
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{ |
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case TD_THR_STOPPED: |
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return "stopped by debugger"; |
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case TD_THR_RUN: |
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return "runnable"; |
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case TD_THR_ACTIVE: |
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return "active"; |
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case TD_THR_ZOMBIE: |
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return "zombie"; |
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case TD_THR_SLEEP: |
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return "sleeping"; |
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case TD_THR_STOPPED_ASLEEP: |
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return "stopped by debugger AND blocked"; |
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default: |
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snprintf (buf, sizeof (buf), "unknown thread_db state %d", state); |
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return buf; |
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} |
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} |
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|
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/* Convert LWP to user-level thread id. */ |
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static ptid_t |
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thread_from_lwp (ptid_t ptid, td_thrhandle_t *th, td_thrinfo_t *ti) |
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{ |
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td_err_e err; |
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|
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gdb_assert (IS_LWP (ptid)); |
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|
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if (fbsd_thread_active) |
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{ |
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err = td_ta_map_lwp2thr_p (thread_agent, GET_LWP (ptid), th); |
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if (err == TD_OK) |
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{ |
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err = td_thr_get_info_p (th, ti); |
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if (err != TD_OK) |
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error ("Cannot get thread info: %s", thread_db_err_str (err)); |
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return BUILD_THREAD (ti->ti_tid, GET_PID (ptid)); |
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} |
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} |
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|
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/* the LWP is not mapped to user thread */ |
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return BUILD_LWP (GET_LWP (ptid), GET_PID (ptid)); |
| 280 |
} |
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|
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static void |
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fbsd_core_get_first_lwp (bfd *abfd, asection *asect, void *obj) |
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{ |
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if (strncmp (bfd_section_name (abfd, asect), ".reg/", 5) != 0) |
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return; |
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|
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if (*(lwpid_t *)obj != 0) |
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return; |
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|
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*(lwpid_t *)obj = atoi (bfd_section_name (abfd, asect) + 5); |
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} |
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|
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static long |
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get_current_lwp (int pid) |
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{ |
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struct ptrace_lwpinfo pl; |
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lwpid_t lwpid; |
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|
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if (!target_has_execution) |
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{ |
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lwpid = 0; |
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bfd_map_over_sections (core_bfd, fbsd_core_get_first_lwp, &lwpid); |
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return lwpid; |
| 305 |
} |
| 306 |
if (ptrace (PT_LWPINFO, pid, (caddr_t)&pl, sizeof(pl))) |
| 307 |
perror_with_name("PT_LWPINFO"); |
| 308 |
|
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return (long)pl.pl_lwpid; |
| 310 |
} |
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|
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static void |
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get_current_thread (void) |
| 314 |
{ |
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td_thrhandle_t th; |
| 316 |
td_thrinfo_t ti; |
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long lwp; |
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ptid_t tmp, ptid; |
| 319 |
|
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lwp = get_current_lwp (proc_handle.pid); |
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tmp = BUILD_LWP (lwp, proc_handle.pid); |
| 322 |
ptid = thread_from_lwp (tmp, &th, &ti); |
| 323 |
if (in_thread_list (inferior_ptid) ) |
| 324 |
{ |
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struct thread_info * ti_inf = inferior_thread(); |
| 326 |
ti_inf->ptid = ptid; |
| 327 |
} |
| 328 |
if (!in_thread_list (ptid)) |
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{ |
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attach_thread (ptid, &th, &ti, 1); |
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} |
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inferior_ptid = ptid; |
| 333 |
} |
| 334 |
|
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static CORE_ADDR |
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extract_func_ptr(void *value) |
| 337 |
{ |
| 338 |
|
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return (extract_typed_address |
| 340 |
((gdb_byte *)value, |
| 341 |
builtin_type (target_gdbarch ())->builtin_func_ptr)); |
| 342 |
} |
| 343 |
|
| 344 |
static CORE_ADDR |
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extract_data_ptr(void *value) |
| 346 |
{ |
| 347 |
|
| 348 |
return (extract_typed_address |
| 349 |
((gdb_byte *)value, |
| 350 |
builtin_type (target_gdbarch ())->builtin_data_ptr)); |
| 351 |
} |
| 352 |
|
| 353 |
static td_err_e |
| 354 |
enable_thread_event (td_thragent_t *thread_agent, int event, CORE_ADDR *bp) |
| 355 |
{ |
| 356 |
td_notify_t notify; |
| 357 |
td_err_e err; |
| 358 |
|
| 359 |
/* Get the breakpoint address for thread EVENT. */ |
| 360 |
err = td_ta_event_addr_p (thread_agent, event, ¬ify); |
| 361 |
if (err != TD_OK) |
| 362 |
return err; |
| 363 |
|
| 364 |
/* Set up the breakpoint. */ |
| 365 |
(*bp) = (gdbarch_convert_from_func_ptr_addr |
| 366 |
(target_gdbarch (), |
| 367 |
extract_func_ptr(¬ify.u.bptaddr), |
| 368 |
¤t_target)); |
| 369 |
create_thread_event_breakpoint (target_gdbarch (), (*bp)); |
| 370 |
|
| 371 |
return TD_OK; |
| 372 |
} |
| 373 |
|
| 374 |
static void |
| 375 |
enable_thread_event_reporting (void) |
| 376 |
{ |
| 377 |
td_thr_events_t events; |
| 378 |
td_notify_t notify; |
| 379 |
td_err_e err; |
| 380 |
|
| 381 |
/* We cannot use the thread event reporting facility if these |
| 382 |
functions aren't available. */ |
| 383 |
if (td_ta_event_addr_p == NULL || td_ta_set_event_p == NULL |
| 384 |
|| td_ta_event_getmsg_p == NULL || td_thr_event_enable_p == NULL) |
| 385 |
return; |
| 386 |
|
| 387 |
/* Set the process wide mask saying which events we're interested in. */ |
| 388 |
td_event_emptyset (&events); |
| 389 |
td_event_addset (&events, TD_CREATE); |
| 390 |
td_event_addset (&events, TD_DEATH); |
| 391 |
|
| 392 |
err = td_ta_set_event_p (thread_agent, &events); |
| 393 |
if (err != TD_OK) |
| 394 |
{ |
| 395 |
warning ("Unable to set global thread event mask: %s", |
| 396 |
thread_db_err_str (err)); |
| 397 |
return; |
| 398 |
} |
| 399 |
|
| 400 |
/* Delete previous thread event breakpoints, if any. */ |
| 401 |
remove_thread_event_breakpoints (); |
| 402 |
td_create_bp_addr = 0; |
| 403 |
td_death_bp_addr = 0; |
| 404 |
|
| 405 |
/* Set up the thread creation event. */ |
| 406 |
err = enable_thread_event (thread_agent, TD_CREATE, &td_create_bp_addr); |
| 407 |
if (err != TD_OK) |
| 408 |
{ |
| 409 |
warning ("Unable to get location for thread creation breakpoint: %s", |
| 410 |
thread_db_err_str (err)); |
| 411 |
return; |
| 412 |
} |
| 413 |
|
| 414 |
/* Set up the thread death event. */ |
| 415 |
err = enable_thread_event (thread_agent, TD_DEATH, &td_death_bp_addr); |
| 416 |
if (err != TD_OK) |
| 417 |
{ |
| 418 |
warning ("Unable to get location for thread death breakpoint: %s", |
| 419 |
thread_db_err_str (err)); |
| 420 |
return; |
| 421 |
} |
| 422 |
} |
| 423 |
|
| 424 |
static void |
| 425 |
disable_thread_event_reporting (void) |
| 426 |
{ |
| 427 |
td_thr_events_t events; |
| 428 |
|
| 429 |
/* Set the process wide mask saying we aren't interested in any |
| 430 |
events anymore. */ |
| 431 |
td_event_emptyset (&events); |
| 432 |
td_ta_set_event_p (thread_agent, &events); |
| 433 |
|
| 434 |
td_create_bp_addr = 0; |
| 435 |
td_death_bp_addr = 0; |
| 436 |
} |
| 437 |
|
| 438 |
static void |
| 439 |
fbsd_thread_activate (void) |
| 440 |
{ |
| 441 |
fbsd_thread_active = 1; |
| 442 |
if (target_has_execution) |
| 443 |
enable_thread_event_reporting (); |
| 444 |
else |
| 445 |
init_thread_list (); |
| 446 |
fbsd_thread_update_thread_list (NULL); |
| 447 |
get_current_thread (); |
| 448 |
} |
| 449 |
|
| 450 |
static void |
| 451 |
fbsd_thread_deactivate (void) |
| 452 |
{ |
| 453 |
if (target_has_execution) |
| 454 |
disable_thread_event_reporting(); |
| 455 |
td_ta_delete_p (thread_agent); |
| 456 |
|
| 457 |
inferior_ptid = pid_to_ptid (proc_handle.pid); |
| 458 |
proc_handle.pid = 0; |
| 459 |
fbsd_thread_active = 0; |
| 460 |
fbsd_thread_present = 0; |
| 461 |
} |
| 462 |
|
| 463 |
static void |
| 464 |
check_for_thread_db (void) |
| 465 |
{ |
| 466 |
td_err_e err; |
| 467 |
|
| 468 |
if (td_ta_new_p == NULL) |
| 469 |
return; |
| 470 |
|
| 471 |
/* Don't try to attach to a dead target if there is no core file. */ |
| 472 |
if (!target_has_execution && core_bfd == NULL) |
| 473 |
return; |
| 474 |
|
| 475 |
/* Nothing to do. The thread library was already detected and the |
| 476 |
target vector was already activated. */ |
| 477 |
if (fbsd_thread_active) |
| 478 |
return; |
| 479 |
|
| 480 |
/* Now, initialize libthread_db. This needs to be done after the |
| 481 |
shared libraries are located because it needs information from |
| 482 |
the user's thread library. */ |
| 483 |
|
| 484 |
err = td_init_p (); |
| 485 |
if (err != TD_OK) |
| 486 |
{ |
| 487 |
warning ("Cannot initialize libthread_db: %s", thread_db_err_str (err)); |
| 488 |
return; |
| 489 |
} |
| 490 |
|
| 491 |
/* Initialize the structure that identifies the child process. Note |
| 492 |
that at this point there is no guarantee that we actually have a |
| 493 |
child process. */ |
| 494 |
proc_handle.pid = GET_PID (inferior_ptid); |
| 495 |
|
| 496 |
/* Now attempt to open a connection to the thread library. */ |
| 497 |
err = td_ta_new_p (&proc_handle, &thread_agent); |
| 498 |
switch (err) |
| 499 |
{ |
| 500 |
case TD_NOLIBTHREAD: |
| 501 |
/* No thread library was detected. */ |
| 502 |
break; |
| 503 |
|
| 504 |
case TD_OK: |
| 505 |
/* The thread library was detected. Activate the thread_db target. */ |
| 506 |
push_target(&fbsd_thread_ops); |
| 507 |
fbsd_thread_present = 1; |
| 508 |
fbsd_thread_activate(); |
| 509 |
|
| 510 |
break; |
| 511 |
|
| 512 |
default: |
| 513 |
warning ("Cannot initialize thread debugging library: %s", |
| 514 |
thread_db_err_str (err)); |
| 515 |
break; |
| 516 |
} |
| 517 |
} |
| 518 |
|
| 519 |
static void |
| 520 |
fbsd_thread_new_objfile (struct objfile *objfile) |
| 521 |
{ |
| 522 |
if (objfile != NULL) |
| 523 |
check_for_thread_db (); |
| 524 |
} |
| 525 |
|
| 526 |
static void |
| 527 |
fbsd_thread_detach (struct target_ops *ops, const char *args, int from_tty) |
| 528 |
{ |
| 529 |
struct target_ops *beneath = find_target_beneath (ops); |
| 530 |
|
| 531 |
fbsd_thread_deactivate (); |
| 532 |
|
| 533 |
/* Delete thread event breakpoints, if any. */ |
| 534 |
remove_thread_event_breakpoints (); |
| 535 |
|
| 536 |
unpush_target (&fbsd_thread_ops); |
| 537 |
|
| 538 |
beneath->to_detach (beneath, args, from_tty); |
| 539 |
} |
| 540 |
|
| 541 |
static int |
| 542 |
suspend_thread_callback (const td_thrhandle_t *th_p, void *data) |
| 543 |
{ |
| 544 |
int err = td_thr_dbsuspend_p (th_p); |
| 545 |
if (err != 0) |
| 546 |
fprintf_filtered(gdb_stderr, "%s %s\n", __func__, thread_db_err_str (err)); |
| 547 |
return (err); |
| 548 |
} |
| 549 |
|
| 550 |
static int |
| 551 |
resume_thread_callback (const td_thrhandle_t *th_p, void *data) |
| 552 |
{ |
| 553 |
int err = td_thr_dbresume_p (th_p); |
| 554 |
if (err != 0) |
| 555 |
fprintf_filtered(gdb_stderr, "%s %s\n", __func__, thread_db_err_str (err)); |
| 556 |
return (err); |
| 557 |
} |
| 558 |
|
| 559 |
static void |
| 560 |
fbsd_thread_resume (struct target_ops *ops, |
| 561 |
ptid_t ptid, int step, enum gdb_signal signo) |
| 562 |
{ |
| 563 |
struct target_ops *beneath = find_target_beneath (ops); |
| 564 |
td_thrhandle_t th; |
| 565 |
td_thrinfo_t ti; |
| 566 |
ptid_t work_ptid; |
| 567 |
int resume_all, ret; |
| 568 |
long lwp, thvalid = 0; |
| 569 |
|
| 570 |
if (!fbsd_thread_active) |
| 571 |
{ |
| 572 |
// XXX: I don't think this can happen |
| 573 |
printf_unfiltered ("%s: called without active threads\n", __func__); |
| 574 |
beneath->to_resume (beneath, ptid, step, signo); |
| 575 |
return; |
| 576 |
} |
| 577 |
|
| 578 |
if (GET_PID(ptid) != -1 && step != 0) |
| 579 |
{ |
| 580 |
resume_all = 0; |
| 581 |
work_ptid = ptid; |
| 582 |
} |
| 583 |
else |
| 584 |
{ |
| 585 |
resume_all = 1; |
| 586 |
work_ptid = inferior_ptid; |
| 587 |
} |
| 588 |
|
| 589 |
lwp = GET_LWP (work_ptid); |
| 590 |
if (lwp == 0) |
| 591 |
{ |
| 592 |
/* check user thread */ |
| 593 |
ret = td_ta_map_id2thr_p (thread_agent, GET_THREAD(work_ptid), &th); |
| 594 |
if (ret) |
| 595 |
error ("%s: %s", __func__, thread_db_err_str (ret)); |
| 596 |
|
| 597 |
/* For M:N thread, we need to tell UTS to set/unset single step |
| 598 |
flag at context switch time, the flag will be written into |
| 599 |
thread mailbox. This becauses some architecture may not have |
| 600 |
machine single step flag in ucontext, so we put the flag in mailbox, |
| 601 |
when the thread switches back, kse_switchin restores the single step |
| 602 |
state. */ |
| 603 |
ret = td_thr_sstep_p (&th, step); |
| 604 |
if (ret) |
| 605 |
error ("%s: %s", __func__, thread_db_err_str (ret)); |
| 606 |
ret = td_thr_get_info_p (&th, &ti); |
| 607 |
if (ret) |
| 608 |
error ("%s: %s", __func__, thread_db_err_str (ret)); |
| 609 |
thvalid = 1; |
| 610 |
lwp = ti.ti_lid; |
| 611 |
} |
| 612 |
|
| 613 |
if (lwp) |
| 614 |
{ |
| 615 |
int req = step ? PT_SETSTEP : PT_CLEARSTEP; |
| 616 |
if (ptrace (req, (pid_t) lwp, (caddr_t) 1, gdb_signal_to_host(signo))) |
| 617 |
perror_with_name ("PT_SETSTEP/PT_CLEARSTEP"); |
| 618 |
} |
| 619 |
|
| 620 |
if (!ptid_equal (last_single_step_thread, null_ptid)) |
| 621 |
{ |
| 622 |
ret = td_ta_thr_iter_p (thread_agent, resume_thread_callback, NULL, |
| 623 |
TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 624 |
TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 625 |
if (ret != TD_OK) |
| 626 |
error ("resume error: %s", thread_db_err_str (ret)); |
| 627 |
} |
| 628 |
|
| 629 |
if (!resume_all) |
| 630 |
{ |
| 631 |
ret = td_ta_thr_iter_p (thread_agent, suspend_thread_callback, NULL, |
| 632 |
TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 633 |
TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 634 |
if (ret != TD_OK) |
| 635 |
error ("suspend error: %s", thread_db_err_str (ret)); |
| 636 |
last_single_step_thread = work_ptid; |
| 637 |
} |
| 638 |
else |
| 639 |
last_single_step_thread = null_ptid; |
| 640 |
|
| 641 |
if (thvalid) |
| 642 |
{ |
| 643 |
ret = td_thr_dbresume_p (&th); |
| 644 |
if (ret != TD_OK) |
| 645 |
error ("resume error: %s", thread_db_err_str (ret)); |
| 646 |
} |
| 647 |
else |
| 648 |
{ |
| 649 |
/* it is not necessary, put it here for completness */ |
| 650 |
ret = ptrace(PT_RESUME, lwp, 0, 0); |
| 651 |
} |
| 652 |
|
| 653 |
/* now continue the process, suspended thread wont run */ |
| 654 |
if (ptrace (PT_CONTINUE, proc_handle.pid , (caddr_t)1, |
| 655 |
gdb_signal_to_host(signo))) |
| 656 |
perror_with_name ("PT_CONTINUE"); |
| 657 |
} |
| 658 |
|
| 659 |
static void |
| 660 |
attach_thread (ptid_t ptid, const td_thrhandle_t *th_p, |
| 661 |
const td_thrinfo_t *ti_p, int verbose) |
| 662 |
{ |
| 663 |
struct private_thread_info *private; |
| 664 |
struct thread_info *tp = NULL; |
| 665 |
char *lwpstr = NULL; |
| 666 |
td_err_e err; |
| 667 |
|
| 668 |
/* Add the thread to GDB's thread list. */ |
| 669 |
if (!in_thread_list (ptid)) |
| 670 |
{ |
| 671 |
/* Add thread with info */ |
| 672 |
private = xmalloc(sizeof(struct private_thread_info)); |
| 673 |
gdb_assert(private != NULL); |
| 674 |
// Thread name is assigned when printed |
| 675 |
memset(private, 0, sizeof(struct private_thread_info)); |
| 676 |
|
| 677 |
tp = add_thread_with_info(ptid, private); |
| 678 |
tp->priv = private; |
| 679 |
tp->private_dtor = free_private_thread_info; |
| 680 |
} |
| 681 |
|
| 682 |
if (ti_p->ti_state == TD_THR_UNKNOWN || ti_p->ti_state == TD_THR_ZOMBIE) |
| 683 |
return; /* A zombie thread -- do not attach. */ |
| 684 |
|
| 685 |
if (! IS_THREAD(ptid)) |
| 686 |
return; |
| 687 |
if (!target_has_execution) |
| 688 |
return; |
| 689 |
/* Enable thread event reporting for this thread. */ |
| 690 |
err = td_thr_event_enable_p (th_p, 1); |
| 691 |
if (err != TD_OK) |
| 692 |
error ("Cannot enable thread event reporting for %s: %s", |
| 693 |
target_pid_to_str (ptid), thread_db_err_str (err)); |
| 694 |
} |
| 695 |
|
| 696 |
static void |
| 697 |
detach_thread (ptid_t ptid, int verbose) |
| 698 |
{ |
| 699 |
if (verbose) |
| 700 |
printf_unfiltered ("[%s exited]\n", target_pid_to_str (ptid)); |
| 701 |
} |
| 702 |
|
| 703 |
static void |
| 704 |
check_event (ptid_t ptid) |
| 705 |
{ |
| 706 |
struct regcache *regcache = get_thread_regcache (ptid); |
| 707 |
struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 708 |
td_event_msg_t msg; |
| 709 |
td_thrinfo_t ti; |
| 710 |
td_err_e err; |
| 711 |
CORE_ADDR stop_pc; |
| 712 |
int loop = 0; |
| 713 |
|
| 714 |
/* Bail out early if we're not at a thread event breakpoint. */ |
| 715 |
stop_pc = regcache_read_pc (regcache) |
| 716 |
- gdbarch_decr_pc_after_break (gdbarch); |
| 717 |
if (stop_pc != td_create_bp_addr && stop_pc != td_death_bp_addr) |
| 718 |
return; |
| 719 |
loop = 1; |
| 720 |
|
| 721 |
do |
| 722 |
{ |
| 723 |
err = td_ta_event_getmsg_p (thread_agent, &msg); |
| 724 |
if (err != TD_OK) |
| 725 |
{ |
| 726 |
if (err == TD_NOMSG) |
| 727 |
return; |
| 728 |
error ("Cannot get thread event message: %s", |
| 729 |
thread_db_err_str (err)); |
| 730 |
} |
| 731 |
err = td_thr_get_info_p ((void *)(uintptr_t)msg.th_p, &ti); |
| 732 |
if (err != TD_OK) |
| 733 |
error ("Cannot get thread info: %s", thread_db_err_str (err)); |
| 734 |
ptid = BUILD_THREAD (ti.ti_tid, GET_PID (ptid)); |
| 735 |
switch (msg.event) |
| 736 |
{ |
| 737 |
case TD_CREATE: |
| 738 |
/* We may already know about this thread, for instance when the |
| 739 |
user has issued the `info threads' command before the SIGTRAP |
| 740 |
for hitting the thread creation breakpoint was reported. */ |
| 741 |
attach_thread (ptid, (void *)(uintptr_t)msg.th_p, &ti, 1); |
| 742 |
break; |
| 743 |
case TD_DEATH: |
| 744 |
if (!in_thread_list (ptid)) |
| 745 |
error ("Spurious thread death event."); |
| 746 |
detach_thread (ptid, 1); |
| 747 |
break; |
| 748 |
default: |
| 749 |
error ("Spurious thread event."); |
| 750 |
} |
| 751 |
} |
| 752 |
while (loop); |
| 753 |
} |
| 754 |
|
| 755 |
static ptid_t |
| 756 |
fbsd_thread_wait (struct target_ops *ops, |
| 757 |
ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
| 758 |
{ |
| 759 |
struct target_ops *beneath = find_target_beneath (ops); |
| 760 |
ptid_t ret; |
| 761 |
long lwp; |
| 762 |
CORE_ADDR stop_pc; |
| 763 |
td_thrhandle_t th; |
| 764 |
td_thrinfo_t ti; |
| 765 |
|
| 766 |
ret = beneath->to_wait (beneath, ptid, ourstatus, options); |
| 767 |
if (GET_PID(ret) >= 0 && |
| 768 |
( ourstatus->kind == TARGET_WAITKIND_STOPPED || |
| 769 |
ourstatus->kind == TARGET_WAITKIND_VFORKED || |
| 770 |
ourstatus->kind == TARGET_WAITKIND_FORKED ) ) |
| 771 |
{ |
| 772 |
lwp = get_current_lwp (GET_PID(ret)); |
| 773 |
ret = thread_from_lwp (BUILD_LWP(lwp, GET_PID(ret)), |
| 774 |
&th, &ti); |
| 775 |
if (!in_thread_list(ret)) { |
| 776 |
/* |
| 777 |
* We have to enable event reporting for initial thread |
| 778 |
* which was not mapped before. |
| 779 |
*/ |
| 780 |
attach_thread(ret, &th, &ti, 1); |
| 781 |
} |
| 782 |
if (ourstatus->value.sig == GDB_SIGNAL_TRAP) |
| 783 |
check_event(ret); |
| 784 |
/* this is a hack, if an event won't cause gdb to stop, for example, |
| 785 |
SIGALRM, gdb resumes the process immediatly without setting |
| 786 |
inferior_ptid to the new thread returned here, this is a bug |
| 787 |
because inferior_ptid may already not exist there, and passing |
| 788 |
a non-existing thread to fbsd_thread_resume causes error. However, |
| 789 |
if the exiting thread is the currently selected thread, |
| 790 |
then that is handled later in handle_inferior_event(), and we must |
| 791 |
not delete the currently selected thread. |
| 792 |
*/ |
| 793 |
if (!fbsd_thread_alive (ops, inferior_ptid) && !ptid_equal(inferior_ptid, ret)) |
| 794 |
{ |
| 795 |
ptid_t save_ptid; |
| 796 |
save_ptid = inferior_ptid; |
| 797 |
inferior_ptid = ret; |
| 798 |
delete_thread (save_ptid); |
| 799 |
} |
| 800 |
} |
| 801 |
|
| 802 |
return (ret); |
| 803 |
} |
| 804 |
|
| 805 |
static void |
| 806 |
fbsd_thread_fetch_registers (struct target_ops *ops, |
| 807 |
struct regcache *regcache, int regnum) |
| 808 |
{ |
| 809 |
prgregset_t gregset; |
| 810 |
prfpregset_t fpregset; |
| 811 |
td_thrhandle_t th; |
| 812 |
td_thrinfo_t ti; |
| 813 |
td_err_e err; |
| 814 |
#ifdef PT_GETXMMREGS |
| 815 |
char xmmregs[512]; |
| 816 |
#endif |
| 817 |
|
| 818 |
if (!IS_THREAD (inferior_ptid)) |
| 819 |
{ |
| 820 |
struct target_ops *beneath = find_target_beneath (ops); |
| 821 |
|
| 822 |
beneath->to_fetch_registers (ops, regcache, regnum); |
| 823 |
return; |
| 824 |
} |
| 825 |
|
| 826 |
err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (inferior_ptid), &th); |
| 827 |
if (err != TD_OK) |
| 828 |
error ("Cannot find thread %d: Thread ID=%ld, %s", |
| 829 |
pid_to_thread_id (inferior_ptid), |
| 830 |
GET_THREAD (inferior_ptid), thread_db_err_str (err)); |
| 831 |
|
| 832 |
err = td_thr_get_info_p (&th, &ti); |
| 833 |
if (err != TD_OK) |
| 834 |
error ("Cannot get thread info, Thread ID=%ld, %s", |
| 835 |
GET_THREAD (inferior_ptid), thread_db_err_str (err)); |
| 836 |
|
| 837 |
if (ti.ti_lid != 0) |
| 838 |
{ |
| 839 |
struct target_ops *beneath = find_target_beneath (ops); |
| 840 |
struct cleanup *old_chain; |
| 841 |
|
| 842 |
old_chain = save_inferior_ptid (); |
| 843 |
|
| 844 |
inferior_ptid = BUILD_LWP (ti.ti_lid, GET_PID (inferior_ptid)); |
| 845 |
beneath->to_fetch_registers (ops, regcache, regnum); |
| 846 |
|
| 847 |
do_cleanups (old_chain); |
| 848 |
return; |
| 849 |
} |
| 850 |
|
| 851 |
err = td_thr_getgregs_p (&th, gregset); |
| 852 |
if (err != TD_OK) |
| 853 |
error ("Cannot fetch general-purpose registers for thread %d: Thread ID=%ld, %s", |
| 854 |
pid_to_thread_id (inferior_ptid), |
| 855 |
GET_THREAD (inferior_ptid), thread_db_err_str (err)); |
| 856 |
#ifdef PT_GETXMMREGS |
| 857 |
err = td_thr_getxmmregs_p (&th, xmmregs); |
| 858 |
if (err == TD_OK) |
| 859 |
{ |
| 860 |
i387_supply_fxsave (regcache, -1, xmmregs); |
| 861 |
} |
| 862 |
else |
| 863 |
{ |
| 864 |
#endif |
| 865 |
err = td_thr_getfpregs_p (&th, &fpregset); |
| 866 |
if (err != TD_OK) |
| 867 |
error ("Cannot get floating-point registers for thread %d: Thread ID=%ld, %s", |
| 868 |
pid_to_thread_id (inferior_ptid), |
| 869 |
GET_THREAD (inferior_ptid), thread_db_err_str (err)); |
| 870 |
supply_fpregset (regcache, &fpregset); |
| 871 |
#ifdef PT_GETXMMREGS |
| 872 |
} |
| 873 |
#endif |
| 874 |
|
| 875 |
supply_gregset (regcache, gregset); |
| 876 |
} |
| 877 |
|
| 878 |
static void |
| 879 |
fbsd_thread_store_registers (struct target_ops *ops, |
| 880 |
struct regcache *regcache, int regnum) |
| 881 |
{ |
| 882 |
prgregset_t gregset; |
| 883 |
prfpregset_t fpregset; |
| 884 |
td_thrhandle_t th; |
| 885 |
td_thrinfo_t ti; |
| 886 |
td_err_e err; |
| 887 |
#ifdef PT_GETXMMREGS |
| 888 |
char xmmregs[512]; |
| 889 |
#endif |
| 890 |
|
| 891 |
if (!IS_THREAD (inferior_ptid)) |
| 892 |
{ |
| 893 |
struct target_ops *beneath = find_target_beneath (ops); |
| 894 |
|
| 895 |
beneath->to_store_registers (ops, regcache, regnum); |
| 896 |
return; |
| 897 |
} |
| 898 |
|
| 899 |
err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (inferior_ptid), &th); |
| 900 |
if (err != TD_OK) |
| 901 |
error ("Cannot find thread %d: Thread ID=%ld, %s", |
| 902 |
pid_to_thread_id (inferior_ptid), |
| 903 |
GET_THREAD (inferior_ptid), |
| 904 |
thread_db_err_str (err)); |
| 905 |
|
| 906 |
err = td_thr_get_info_p (&th, &ti); |
| 907 |
if (err != TD_OK) |
| 908 |
error ("Cannot get thread info, Thread ID=%ld, %s", |
| 909 |
GET_THREAD (inferior_ptid), thread_db_err_str (err)); |
| 910 |
|
| 911 |
if (ti.ti_lid != 0) |
| 912 |
{ |
| 913 |
struct target_ops *beneath = find_target_beneath (ops); |
| 914 |
struct cleanup *old_chain; |
| 915 |
|
| 916 |
old_chain = save_inferior_ptid (); |
| 917 |
|
| 918 |
inferior_ptid = BUILD_LWP (ti.ti_lid, GET_PID (inferior_ptid)); |
| 919 |
beneath->to_store_registers (ops, regcache, regnum); |
| 920 |
|
| 921 |
do_cleanups (old_chain); |
| 922 |
return; |
| 923 |
} |
| 924 |
|
| 925 |
if (regnum != -1) |
| 926 |
{ |
| 927 |
char old_value[MAX_REGISTER_SIZE]; |
| 928 |
|
| 929 |
regcache_raw_collect (regcache, regnum, old_value); |
| 930 |
err = td_thr_getgregs_p (&th, gregset); |
| 931 |
if (err != TD_OK) |
| 932 |
error ("%s: td_thr_getgregs %s", __func__, thread_db_err_str (err)); |
| 933 |
#ifdef PT_GETXMMREGS |
| 934 |
err = td_thr_getxmmregs_p (&th, xmmregs); |
| 935 |
if (err != TD_OK) |
| 936 |
{ |
| 937 |
#endif |
| 938 |
err = td_thr_getfpregs_p (&th, &fpregset); |
| 939 |
if (err != TD_OK) |
| 940 |
error ("%s: td_thr_getfpgregs %s", __func__, thread_db_err_str (err)); |
| 941 |
#ifdef PT_GETXMMREGS |
| 942 |
} |
| 943 |
#endif |
| 944 |
regcache_raw_supply (regcache, regnum, old_value); |
| 945 |
} |
| 946 |
|
| 947 |
fill_gregset (regcache, gregset, regnum); |
| 948 |
err = td_thr_setgregs_p (&th, gregset); |
| 949 |
if (err != TD_OK) |
| 950 |
error ("Cannot store general-purpose registers for thread %d: Thread ID=%ld, %s", |
| 951 |
pid_to_thread_id (inferior_ptid), GET_THREAD (inferior_ptid), |
| 952 |
thread_db_err_str (err)); |
| 953 |
|
| 954 |
#ifdef PT_GETXMMREGS |
| 955 |
i387_collect_fxsave (regcache, regnum, xmmregs); |
| 956 |
err = td_thr_setxmmregs_p (&th, xmmregs); |
| 957 |
if (err == TD_OK) |
| 958 |
return; |
| 959 |
#endif |
| 960 |
|
| 961 |
fill_fpregset (regcache, &fpregset, regnum); |
| 962 |
err = td_thr_setfpregs_p (&th, &fpregset); |
| 963 |
if (err != TD_OK) |
| 964 |
error ("Cannot store floating-point registers for thread %d: Thread ID=%ld, %s", |
| 965 |
pid_to_thread_id (inferior_ptid), GET_THREAD (inferior_ptid), |
| 966 |
thread_db_err_str (err)); |
| 967 |
} |
| 968 |
|
| 969 |
static void |
| 970 |
fbsd_thread_mourn_inferior (struct target_ops *ops) |
| 971 |
{ |
| 972 |
struct target_ops *beneath = find_target_beneath (ops); |
| 973 |
|
| 974 |
fbsd_thread_deactivate (); |
| 975 |
|
| 976 |
beneath->to_mourn_inferior (beneath); |
| 977 |
|
| 978 |
/* Delete thread event breakpoints, if any. */ |
| 979 |
remove_thread_event_breakpoints (); |
| 980 |
|
| 981 |
unpush_target (ops); |
| 982 |
} |
| 983 |
|
| 984 |
static void |
| 985 |
fbsd_core_check_lwp (bfd *abfd, asection *asect, void *obj) |
| 986 |
{ |
| 987 |
lwpid_t lwp; |
| 988 |
|
| 989 |
if (strncmp (bfd_section_name (abfd, asect), ".reg/", 5) != 0) |
| 990 |
return; |
| 991 |
|
| 992 |
/* already found */ |
| 993 |
if (*(lwpid_t *)obj == 0) |
| 994 |
return; |
| 995 |
|
| 996 |
lwp = atoi (bfd_section_name (abfd, asect) + 5); |
| 997 |
if (*(lwpid_t *)obj == lwp) |
| 998 |
*(lwpid_t *)obj = 0; |
| 999 |
} |
| 1000 |
|
| 1001 |
static int |
| 1002 |
fbsd_thread_alive (struct target_ops *ops, ptid_t ptid) |
| 1003 |
{ |
| 1004 |
td_thrhandle_t th; |
| 1005 |
td_thrinfo_t ti; |
| 1006 |
td_err_e err; |
| 1007 |
gregset_t gregs; |
| 1008 |
lwpid_t lwp; |
| 1009 |
|
| 1010 |
if (IS_THREAD (ptid)) |
| 1011 |
{ |
| 1012 |
err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (ptid), &th); |
| 1013 |
if (err != TD_OK) |
| 1014 |
return 0; |
| 1015 |
|
| 1016 |
err = td_thr_get_info_p (&th, &ti); |
| 1017 |
if (err != TD_OK) |
| 1018 |
return 0; |
| 1019 |
|
| 1020 |
/* A zombie thread. */ |
| 1021 |
if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE) |
| 1022 |
return 0; |
| 1023 |
|
| 1024 |
return 1; |
| 1025 |
} |
| 1026 |
else if (GET_LWP (ptid) == 0) |
| 1027 |
{ |
| 1028 |
/* we sometimes are called with lwp == 0 */ |
| 1029 |
return 1; |
| 1030 |
} |
| 1031 |
|
| 1032 |
if (fbsd_thread_active) |
| 1033 |
{ |
| 1034 |
err = td_ta_map_lwp2thr_p (thread_agent, GET_LWP (ptid), &th); |
| 1035 |
|
| 1036 |
/* |
| 1037 |
* if the lwp was already mapped to user thread, don't use it |
| 1038 |
* directly, please use user thread id instead. |
| 1039 |
*/ |
| 1040 |
if (err == TD_OK) |
| 1041 |
return 0; |
| 1042 |
} |
| 1043 |
|
| 1044 |
if (!target_has_execution) |
| 1045 |
{ |
| 1046 |
lwp = GET_LWP (ptid); |
| 1047 |
bfd_map_over_sections (core_bfd, fbsd_core_check_lwp, &lwp); |
| 1048 |
return (lwp == 0); |
| 1049 |
} |
| 1050 |
|
| 1051 |
/* check lwp in kernel */ |
| 1052 |
return ptrace (PT_GETREGS, GET_LWP (ptid), (caddr_t)&gregs, 0) == 0; |
| 1053 |
} |
| 1054 |
|
| 1055 |
static int |
| 1056 |
update_thread_list_callback (const td_thrhandle_t *th_p, void *data) |
| 1057 |
{ |
| 1058 |
td_thrinfo_t ti; |
| 1059 |
td_err_e err; |
| 1060 |
ptid_t ptid; |
| 1061 |
|
| 1062 |
err = td_thr_get_info_p (th_p, &ti); |
| 1063 |
if (err != TD_OK) |
| 1064 |
error ("Cannot get thread info: %s", thread_db_err_str (err)); |
| 1065 |
|
| 1066 |
/* Ignore zombie */ |
| 1067 |
if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE) |
| 1068 |
return 0; |
| 1069 |
|
| 1070 |
ptid = BUILD_THREAD (ti.ti_tid, proc_handle.pid); |
| 1071 |
attach_thread (ptid, th_p, &ti, 1); |
| 1072 |
return 0; |
| 1073 |
} |
| 1074 |
|
| 1075 |
static void |
| 1076 |
fbsd_thread_update_thread_list (struct target_ops *ops) |
| 1077 |
{ |
| 1078 |
td_err_e err; |
| 1079 |
|
| 1080 |
/* Delete dead threads. */ |
| 1081 |
prune_threads(); |
| 1082 |
|
| 1083 |
/* Iterate over all user-space threads to discover new threads. */ |
| 1084 |
err = td_ta_thr_iter_p (thread_agent, update_thread_list_callback, NULL, |
| 1085 |
TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| 1086 |
TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| 1087 |
if (err != TD_OK) |
| 1088 |
error ("Cannot find new threads: %s", thread_db_err_str (err)); |
| 1089 |
} |
| 1090 |
|
| 1091 |
static void |
| 1092 |
fbsd_find_lwp_name(long lwpid, struct private_thread_info *info) |
| 1093 |
{ |
| 1094 |
struct cleanup *old_chain; |
| 1095 |
int error, name[4]; |
| 1096 |
unsigned int i; |
| 1097 |
struct kinfo_proc *kipp, *kip; |
| 1098 |
char *lwpstr = info->lwp_name; |
| 1099 |
int pid = inferior_ptid.pid; |
| 1100 |
size_t len = 0; |
| 1101 |
|
| 1102 |
if (!target_has_execution) |
| 1103 |
return; |
| 1104 |
|
| 1105 |
name[0] = CTL_KERN; |
| 1106 |
name[1] = KERN_PROC; |
| 1107 |
name[2] = KERN_PROC_PID | KERN_PROC_INC_THREAD; |
| 1108 |
name[3] = pid; |
| 1109 |
|
| 1110 |
error = sysctl(name, 4, NULL, &len, NULL, 0); |
| 1111 |
if (error < 0) { |
| 1112 |
if (errno != ESRCH) |
| 1113 |
warning (_("sysctl: kern.proc.pid: %d: %s"), pid, |
| 1114 |
safe_strerror (errno)); |
| 1115 |
return; |
| 1116 |
} |
| 1117 |
|
| 1118 |
kip = xmalloc(len); |
| 1119 |
if (kip == NULL) |
| 1120 |
return; |
| 1121 |
old_chain = make_cleanup(xfree, kip); |
| 1122 |
|
| 1123 |
if (sysctl(name, 4, kip, &len, NULL, 0) < 0) { |
| 1124 |
warning (_("sysctl: kern.proc.pid: %d: %s"), pid, safe_strerror(errno)); |
| 1125 |
do_cleanups(old_chain); |
| 1126 |
return; |
| 1127 |
} |
| 1128 |
|
| 1129 |
for (i = 0; i < len / sizeof(*kipp); i++) { |
| 1130 |
kipp = &kip[i]; |
| 1131 |
if ((kipp->ki_tid == lwpid) && strlen(kipp->ki_ocomm) && |
| 1132 |
(strcmp(kipp->ki_comm, kipp->ki_ocomm) != 0)) |
| 1133 |
{ |
| 1134 |
// Found the LWP, update the name field |
| 1135 |
if (lwpstr != NULL) |
| 1136 |
{ |
| 1137 |
if (strcmp(lwpstr, kipp->ki_ocomm) != 0) |
| 1138 |
{ |
| 1139 |
xfree(lwpstr); |
| 1140 |
} |
| 1141 |
else |
| 1142 |
{ |
| 1143 |
// Name hasn't changed, just return |
| 1144 |
break; |
| 1145 |
} |
| 1146 |
} |
| 1147 |
|
| 1148 |
lwpstr = xstrdup(kipp->ki_ocomm); |
| 1149 |
info->lwp_name = lwpstr; |
| 1150 |
break; |
| 1151 |
} |
| 1152 |
} |
| 1153 |
|
| 1154 |
do_cleanups(old_chain); |
| 1155 |
} |
| 1156 |
|
| 1157 |
static char * |
| 1158 |
fbsd_thread_pid_to_str (struct target_ops *ops, ptid_t ptid) |
| 1159 |
{ |
| 1160 |
static char buf[64]; |
| 1161 |
struct thread_info *tinfo = NULL; |
| 1162 |
|
| 1163 |
if (IS_THREAD (ptid)) |
| 1164 |
{ |
| 1165 |
td_thrhandle_t th; |
| 1166 |
td_thrinfo_t ti; |
| 1167 |
td_err_e err; |
| 1168 |
|
| 1169 |
err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (ptid), &th); |
| 1170 |
if (err != TD_OK) |
| 1171 |
error ("Cannot find thread, Thread ID=%ld, %s", |
| 1172 |
GET_THREAD (ptid), thread_db_err_str (err)); |
| 1173 |
|
| 1174 |
err = td_thr_get_info_p (&th, &ti); |
| 1175 |
if (err != TD_OK) |
| 1176 |
error ("Cannot get thread info, Thread ID=%ld, %s", |
| 1177 |
GET_THREAD (ptid), thread_db_err_str (err)); |
| 1178 |
|
| 1179 |
tinfo = find_thread_ptid(ptid); |
| 1180 |
gdb_assert(tinfo != NULL); |
| 1181 |
|
| 1182 |
if (ti.ti_lid != 0) |
| 1183 |
{ |
| 1184 |
// Need to find the name of this LWP, even though it shouldn't change |
| 1185 |
fbsd_find_lwp_name(ti.ti_lid, tinfo->priv); |
| 1186 |
|
| 1187 |
if (tinfo->priv->lwp_name == NULL) |
| 1188 |
{ |
| 1189 |
snprintf(buf, sizeof (buf), "Thread %llx (LWP %d)", |
| 1190 |
(unsigned long long)th.th_thread, ti.ti_lid); |
| 1191 |
} |
| 1192 |
else |
| 1193 |
{ |
| 1194 |
snprintf(buf, sizeof (buf), "Thread %llx (LWP %d %s)", |
| 1195 |
(unsigned long long)th.th_thread, ti.ti_lid, |
| 1196 |
tinfo->priv->lwp_name); |
| 1197 |
} |
| 1198 |
} |
| 1199 |
else |
| 1200 |
{ |
| 1201 |
snprintf (buf, sizeof (buf), "Thread %llx (%s)", |
| 1202 |
(unsigned long long)th.th_thread, |
| 1203 |
thread_db_state_str (ti.ti_state)); |
| 1204 |
} |
| 1205 |
|
| 1206 |
return buf; |
| 1207 |
} |
| 1208 |
else if (IS_LWP (ptid)) |
| 1209 |
{ |
| 1210 |
snprintf (buf, sizeof (buf), "LWP %d", (int) GET_LWP (ptid)); |
| 1211 |
return buf; |
| 1212 |
} |
| 1213 |
return normal_pid_to_str (ptid); |
| 1214 |
} |
| 1215 |
|
| 1216 |
CORE_ADDR |
| 1217 |
fbsd_thread_get_local_address(struct target_ops *ops, |
| 1218 |
ptid_t ptid, |
| 1219 |
CORE_ADDR lm, |
| 1220 |
CORE_ADDR offset) |
| 1221 |
{ |
| 1222 |
td_thrhandle_t th; |
| 1223 |
void *address; |
| 1224 |
int ret; |
| 1225 |
|
| 1226 |
if (IS_THREAD (ptid)) |
| 1227 |
{ |
| 1228 |
if (!td_thr_tls_get_addr_p) |
| 1229 |
error ("Cannot find thread-local interface in thread_db library."); |
| 1230 |
|
| 1231 |
ret = td_ta_map_id2thr_p (thread_agent, GET_THREAD(ptid), &th); |
| 1232 |
|
| 1233 |
/* get the address of the variable. */ |
| 1234 |
ret = td_thr_tls_get_addr_p (&th, (void *)lm, offset, &address); |
| 1235 |
|
| 1236 |
if (ret != TD_OK) |
| 1237 |
{ |
| 1238 |
error ("Cannot find thread-local storage for thread %ld\n%s", |
| 1239 |
(long) GET_THREAD (ptid), thread_db_err_str (ret)); |
| 1240 |
} |
| 1241 |
|
| 1242 |
/* Cast assuming host == target. */ |
| 1243 |
return extract_data_ptr (&address); |
| 1244 |
} |
| 1245 |
return (0); |
| 1246 |
} |
| 1247 |
|
| 1248 |
static int |
| 1249 |
tsd_cb (thread_key_t key, void (*destructor)(void *), void *ignore) |
| 1250 |
{ |
| 1251 |
struct bound_minimal_symbol bms; |
| 1252 |
const char *name; |
| 1253 |
|
| 1254 |
bms = lookup_minimal_symbol_by_pc (extract_func_ptr (&destructor)); |
| 1255 |
if (!bms.minsym) |
| 1256 |
name = "???"; |
| 1257 |
else |
| 1258 |
name = MSYMBOL_PRINT_NAME (bms.minsym); |
| 1259 |
|
| 1260 |
printf_filtered ("Key %d, destructor %p <%s>\n", key, destructor, name); |
| 1261 |
return 0; |
| 1262 |
} |
| 1263 |
|
| 1264 |
static void |
| 1265 |
fbsd_thread_tsd_cmd (char *exp, int from_tty) |
| 1266 |
{ |
| 1267 |
if (fbsd_thread_active) |
| 1268 |
td_ta_tsd_iter_p (thread_agent, tsd_cb, NULL); |
| 1269 |
} |
| 1270 |
|
| 1271 |
static void |
| 1272 |
fbsd_print_sigset (sigset_t *set) |
| 1273 |
{ |
| 1274 |
int i; |
| 1275 |
|
| 1276 |
for (i = 1; i <= _SIG_MAXSIG; ++i) { |
| 1277 |
if (sigismember(set, i)) { |
| 1278 |
if (i < sizeof(sys_signame)/sizeof(sys_signame[0])) |
| 1279 |
printf_filtered("%s ", sys_signame[i]); |
| 1280 |
else |
| 1281 |
printf_filtered("sig%d ", i); |
| 1282 |
} |
| 1283 |
} |
| 1284 |
printf_filtered("\n"); |
| 1285 |
} |
| 1286 |
|
| 1287 |
static void |
| 1288 |
fbsd_thread_signal_cmd (char *exp, int from_tty) |
| 1289 |
{ |
| 1290 |
td_thrhandle_t th; |
| 1291 |
td_thrinfo_t ti; |
| 1292 |
td_err_e err; |
| 1293 |
#ifdef PL_FLAG_SI |
| 1294 |
const char *code; |
| 1295 |
#endif |
| 1296 |
|
| 1297 |
if (!fbsd_thread_active || !IS_THREAD(inferior_ptid)) |
| 1298 |
return; |
| 1299 |
|
| 1300 |
err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (inferior_ptid), &th); |
| 1301 |
if (err != TD_OK) |
| 1302 |
return; |
| 1303 |
|
| 1304 |
err = td_thr_get_info_p (&th, &ti); |
| 1305 |
if (err != TD_OK) |
| 1306 |
return; |
| 1307 |
|
| 1308 |
printf_filtered("signal mask:\n"); |
| 1309 |
fbsd_print_sigset(&ti.ti_sigmask); |
| 1310 |
printf_filtered("signal pending:\n"); |
| 1311 |
fbsd_print_sigset(&ti.ti_pending); |
| 1312 |
#ifdef PL_FLAG_SI |
| 1313 |
if (ti.ti_siginfo.si_signo != 0) { |
| 1314 |
printf_filtered("si_signo %d si_errno %d", ti.ti_siginfo.si_signo, |
| 1315 |
ti.ti_siginfo.si_errno); |
| 1316 |
if (ti.ti_siginfo.si_errno != 0) |
| 1317 |
printf_filtered(" (%s)", strerror(ti.ti_siginfo.si_errno)); |
| 1318 |
printf_filtered("\n"); |
| 1319 |
switch (ti.ti_siginfo.si_code) { |
| 1320 |
case SI_NOINFO: |
| 1321 |
code = "NOINFO"; |
| 1322 |
break; |
| 1323 |
case SI_USER: |
| 1324 |
code = "USER"; |
| 1325 |
break; |
| 1326 |
case SI_QUEUE: |
| 1327 |
code = "QUEUE"; |
| 1328 |
break; |
| 1329 |
case SI_TIMER: |
| 1330 |
code = "TIMER"; |
| 1331 |
break; |
| 1332 |
case SI_ASYNCIO: |
| 1333 |
code = "ASYNCIO"; |
| 1334 |
break; |
| 1335 |
case SI_MESGQ: |
| 1336 |
code = "MESGQ"; |
| 1337 |
break; |
| 1338 |
case SI_KERNEL: |
| 1339 |
code = "KERNEL"; |
| 1340 |
break; |
| 1341 |
default: |
| 1342 |
code = "UNKNOWN"; |
| 1343 |
break; |
| 1344 |
} |
| 1345 |
printf_filtered("si_code %s si_pid %d si_uid %d si_status %x si_addr %p\n", |
| 1346 |
code, ti.ti_siginfo.si_pid, ti.ti_siginfo.si_uid, ti.ti_siginfo.si_status, |
| 1347 |
ti.ti_siginfo.si_addr); |
| 1348 |
} |
| 1349 |
#endif |
| 1350 |
} |
| 1351 |
|
| 1352 |
static void |
| 1353 |
init_fbsd_thread_ops (void) |
| 1354 |
{ |
| 1355 |
fbsd_thread_ops.to_shortname = "freebsd-threads"; |
| 1356 |
fbsd_thread_ops.to_longname = "FreeBSD multithreaded child process."; |
| 1357 |
fbsd_thread_ops.to_doc = "FreeBSD threads support."; |
| 1358 |
fbsd_thread_ops.to_detach = fbsd_thread_detach; |
| 1359 |
fbsd_thread_ops.to_resume = fbsd_thread_resume; |
| 1360 |
fbsd_thread_ops.to_wait = fbsd_thread_wait; |
| 1361 |
fbsd_thread_ops.to_fetch_registers = fbsd_thread_fetch_registers; |
| 1362 |
fbsd_thread_ops.to_store_registers = fbsd_thread_store_registers; |
| 1363 |
fbsd_thread_ops.to_mourn_inferior = fbsd_thread_mourn_inferior; |
| 1364 |
fbsd_thread_ops.to_thread_alive = fbsd_thread_alive; |
| 1365 |
fbsd_thread_ops.to_update_thread_list = fbsd_thread_update_thread_list; |
| 1366 |
fbsd_thread_ops.to_pid_to_str = fbsd_thread_pid_to_str; |
| 1367 |
fbsd_thread_ops.to_stratum = thread_stratum; |
| 1368 |
fbsd_thread_ops.to_get_thread_local_address = fbsd_thread_get_local_address; |
| 1369 |
fbsd_thread_ops.to_magic = OPS_MAGIC; |
| 1370 |
} |
| 1371 |
|
| 1372 |
static int |
| 1373 |
thread_db_load (void) |
| 1374 |
{ |
| 1375 |
void *handle; |
| 1376 |
td_err_e err; |
| 1377 |
|
| 1378 |
handle = dlopen (LIBTHREAD_DB_SO, RTLD_NOW); |
| 1379 |
if (handle == NULL) |
| 1380 |
return 0; |
| 1381 |
|
| 1382 |
#define resolve(X) \ |
| 1383 |
if (!(X##_p = dlsym (handle, #X))) \ |
| 1384 |
return 0; |
| 1385 |
|
| 1386 |
resolve(td_init); |
| 1387 |
resolve(td_ta_new); |
| 1388 |
resolve(td_ta_delete); |
| 1389 |
resolve(td_ta_map_id2thr); |
| 1390 |
resolve(td_ta_map_lwp2thr); |
| 1391 |
resolve(td_ta_thr_iter); |
| 1392 |
resolve(td_thr_get_info); |
| 1393 |
#ifdef PT_GETXMMREGS |
| 1394 |
resolve(td_thr_getxmmregs); |
| 1395 |
#endif |
| 1396 |
resolve(td_thr_getfpregs); |
| 1397 |
resolve(td_thr_getgregs); |
| 1398 |
#ifdef PT_GETXMMREGS |
| 1399 |
resolve(td_thr_setxmmregs); |
| 1400 |
#endif |
| 1401 |
resolve(td_thr_setfpregs); |
| 1402 |
resolve(td_thr_setgregs); |
| 1403 |
resolve(td_thr_sstep); |
| 1404 |
resolve(td_ta_tsd_iter); |
| 1405 |
resolve(td_thr_dbsuspend); |
| 1406 |
resolve(td_thr_dbresume); |
| 1407 |
resolve(td_thr_tls_get_addr); |
| 1408 |
|
| 1409 |
/* These are not essential. */ |
| 1410 |
td_ta_event_addr_p = dlsym (handle, "td_ta_event_addr"); |
| 1411 |
td_ta_set_event_p = dlsym (handle, "td_ta_set_event"); |
| 1412 |
td_ta_event_getmsg_p = dlsym (handle, "td_ta_event_getmsg"); |
| 1413 |
td_thr_event_enable_p = dlsym (handle, "td_thr_event_enable"); |
| 1414 |
td_thr_tls_get_addr_p = dlsym (handle, "td_thr_tls_get_addr"); |
| 1415 |
|
| 1416 |
return 1; |
| 1417 |
} |
| 1418 |
|
| 1419 |
void |
| 1420 |
_initialize_thread_db (void) |
| 1421 |
{ |
| 1422 |
|
| 1423 |
init_fbsd_thread_ops (); |
| 1424 |
|
| 1425 |
if (thread_db_load ()) |
| 1426 |
{ |
| 1427 |
add_target (&fbsd_thread_ops); |
| 1428 |
|
| 1429 |
/* "thread tsd" command */ |
| 1430 |
add_cmd ("tsd", class_run, fbsd_thread_tsd_cmd, |
| 1431 |
"Show the thread-specific data keys and destructors " |
| 1432 |
"for the process.\n", |
| 1433 |
&thread_cmd_list); |
| 1434 |
|
| 1435 |
add_cmd ("signal", class_run, fbsd_thread_signal_cmd, |
| 1436 |
"Show the thread signal info.\n", |
| 1437 |
&thread_cmd_list); |
| 1438 |
|
| 1439 |
/* Hook into new_objfile notification. */ |
| 1440 |
observer_attach_new_objfile (fbsd_thread_new_objfile); |
| 1441 |
} |
| 1442 |
else |
| 1443 |
{ |
| 1444 |
fprintf_unfiltered (gdb_stderr, |
| 1445 |
"[GDB will not be able to debug user-mode threads: %s]\n", dlerror()); |
| 1446 |
} |
| 1447 |
} |
| 1448 |
|
| 1449 |
/* proc service functions */ |
| 1450 |
void |
| 1451 |
ps_plog (const char *fmt, ...) |
| 1452 |
{ |
| 1453 |
va_list args; |
| 1454 |
|
| 1455 |
va_start (args, fmt); |
| 1456 |
vfprintf_filtered (gdb_stderr, fmt, args); |
| 1457 |
va_end (args); |
| 1458 |
} |
| 1459 |
|
| 1460 |
ps_err_e |
| 1461 |
ps_pglobal_lookup (struct ps_prochandle *ph, const char *obj, |
| 1462 |
const char *name, psaddr_t *sym_addr) |
| 1463 |
{ |
| 1464 |
struct bound_minimal_symbol ms; |
| 1465 |
CORE_ADDR addr; |
| 1466 |
|
| 1467 |
ms = lookup_minimal_symbol (name, NULL, NULL); |
| 1468 |
if (!ms.minsym) |
| 1469 |
return PS_NOSYM; |
| 1470 |
|
| 1471 |
*sym_addr = BMSYMBOL_VALUE_ADDRESS (ms); |
| 1472 |
return PS_OK; |
| 1473 |
} |
| 1474 |
|
| 1475 |
ps_err_e |
| 1476 |
ps_pread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t len) |
| 1477 |
{ |
| 1478 |
int err = target_read_memory (extract_data_ptr (&addr), buf, len); |
| 1479 |
return (err == 0 ? PS_OK : PS_ERR); |
| 1480 |
} |
| 1481 |
|
| 1482 |
ps_err_e |
| 1483 |
ps_pwrite (struct ps_prochandle *ph, psaddr_t addr, const void *buf, |
| 1484 |
size_t len) |
| 1485 |
{ |
| 1486 |
int err = target_write_memory (extract_data_ptr (&addr), (void *)buf, len); |
| 1487 |
return (err == 0 ? PS_OK : PS_ERR); |
| 1488 |
} |
| 1489 |
|
| 1490 |
ps_err_e |
| 1491 |
ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) |
| 1492 |
{ |
| 1493 |
struct cleanup *old_chain; |
| 1494 |
struct regcache *regcache; |
| 1495 |
|
| 1496 |
old_chain = save_inferior_ptid (); |
| 1497 |
|
| 1498 |
inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
| 1499 |
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
| 1500 |
|
| 1501 |
target_fetch_registers (regcache, -1); |
| 1502 |
fill_gregset (regcache, gregset, -1); |
| 1503 |
do_cleanups (old_chain); |
| 1504 |
return PS_OK; |
| 1505 |
} |
| 1506 |
|
| 1507 |
ps_err_e |
| 1508 |
ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, const prgregset_t gregset) |
| 1509 |
{ |
| 1510 |
struct cleanup *old_chain; |
| 1511 |
struct regcache *regcache; |
| 1512 |
|
| 1513 |
old_chain = save_inferior_ptid (); |
| 1514 |
inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
| 1515 |
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
| 1516 |
|
| 1517 |
supply_gregset (regcache, gregset); |
| 1518 |
target_store_registers (regcache, -1); |
| 1519 |
do_cleanups (old_chain); |
| 1520 |
return PS_OK; |
| 1521 |
} |
| 1522 |
|
| 1523 |
ps_err_e |
| 1524 |
ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, prfpregset_t *fpregset) |
| 1525 |
{ |
| 1526 |
struct cleanup *old_chain; |
| 1527 |
struct regcache *regcache; |
| 1528 |
|
| 1529 |
old_chain = save_inferior_ptid (); |
| 1530 |
inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
| 1531 |
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
| 1532 |
|
| 1533 |
target_fetch_registers (regcache, -1); |
| 1534 |
fill_fpregset (regcache, fpregset, -1); |
| 1535 |
do_cleanups (old_chain); |
| 1536 |
return PS_OK; |
| 1537 |
} |
| 1538 |
|
| 1539 |
ps_err_e |
| 1540 |
ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
| 1541 |
const prfpregset_t *fpregset) |
| 1542 |
{ |
| 1543 |
struct cleanup *old_chain; |
| 1544 |
struct regcache *regcache; |
| 1545 |
|
| 1546 |
old_chain = save_inferior_ptid (); |
| 1547 |
inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
| 1548 |
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
| 1549 |
|
| 1550 |
supply_fpregset (regcache, fpregset); |
| 1551 |
target_store_registers (regcache, -1); |
| 1552 |
do_cleanups (old_chain); |
| 1553 |
return PS_OK; |
| 1554 |
} |
| 1555 |
|
| 1556 |
#ifdef PT_GETXMMREGS |
| 1557 |
ps_err_e |
| 1558 |
ps_lgetxmmregs (struct ps_prochandle *ph, lwpid_t lwpid, char *xmmregs) |
| 1559 |
{ |
| 1560 |
struct cleanup *old_chain; |
| 1561 |
struct regcache *regcache; |
| 1562 |
|
| 1563 |
old_chain = save_inferior_ptid (); |
| 1564 |
inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
| 1565 |
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
| 1566 |
|
| 1567 |
target_fetch_registers (regcache, -1); |
| 1568 |
i387_collect_fxsave (regcache, -1, xmmregs); |
| 1569 |
do_cleanups (old_chain); |
| 1570 |
return PS_OK; |
| 1571 |
} |
| 1572 |
|
| 1573 |
ps_err_e |
| 1574 |
ps_lsetxmmregs (struct ps_prochandle *ph, lwpid_t lwpid, |
| 1575 |
const char *xmmregs) |
| 1576 |
{ |
| 1577 |
struct cleanup *old_chain; |
| 1578 |
struct regcache *regcache; |
| 1579 |
|
| 1580 |
old_chain = save_inferior_ptid (); |
| 1581 |
inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
| 1582 |
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
| 1583 |
|
| 1584 |
i387_supply_fxsave (regcache, -1, xmmregs); |
| 1585 |
target_store_registers (regcache, -1); |
| 1586 |
do_cleanups (old_chain); |
| 1587 |
return PS_OK; |
| 1588 |
} |
| 1589 |
#endif |
| 1590 |
|
| 1591 |
ps_err_e |
| 1592 |
ps_lstop(struct ps_prochandle *ph, lwpid_t lwpid) |
| 1593 |
{ |
| 1594 |
if (ptrace (PT_SUSPEND, lwpid, 0, 0) == -1) |
| 1595 |
return PS_ERR; |
| 1596 |
return PS_OK; |
| 1597 |
} |
| 1598 |
|
| 1599 |
ps_err_e |
| 1600 |
ps_lcontinue(struct ps_prochandle *ph, lwpid_t lwpid) |
| 1601 |
{ |
| 1602 |
if (ptrace (PT_RESUME, lwpid, 0, 0) == -1) |
| 1603 |
return PS_ERR; |
| 1604 |
return PS_OK; |
| 1605 |
} |
| 1606 |
|
| 1607 |
ps_err_e |
| 1608 |
ps_linfo(struct ps_prochandle *ph, lwpid_t lwpid, void *info) |
| 1609 |
{ |
| 1610 |
if (!target_has_execution) { |
| 1611 |
/* XXX should verify lwpid and make a pseudo lwp info */ |
| 1612 |
memset(info, 0, sizeof(struct ptrace_lwpinfo)); |
| 1613 |
return PS_OK; |
| 1614 |
} |
| 1615 |
|
| 1616 |
if (ptrace (PT_LWPINFO, lwpid, info, sizeof(struct ptrace_lwpinfo)) == -1) |
| 1617 |
return PS_ERR; |
| 1618 |
return PS_OK; |
| 1619 |
} |