aae5483213
Most of the changes are a direct result of adding thread awareness. Typically, DDB_REGS is gone. All registers are taken from the trapframe and backtraces use the PCB based contexts. DDB_REGS was defined to be a trapframe on all platforms anyway. Thread awareness introduces the following new commands: thread X switch to thread X (where X is the TID), show threads list all threads. The backtrace code has been made more flexible so that one can create backtraces for any thread by giving the thread ID as an argument to trace. With this change, ia64 has support for breakpoints.
169 lines
4.4 KiB
C
169 lines
4.4 KiB
C
/*-
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* Copyright (c) 1993 The Regents of the University of California.
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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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/param.h>
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#include <sys/systm.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/cons.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <ddb/ddb.h>
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static void dumpthread(volatile struct proc *p, volatile struct thread *td);
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void
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db_ps(dummy1, dummy2, dummy3, dummy4)
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db_expr_t dummy1;
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boolean_t dummy2;
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db_expr_t dummy3;
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char * dummy4;
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{
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volatile struct proc *p, *pp;
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volatile struct thread *td;
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char *state;
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int np, quit;
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np = nprocs;
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quit = 0;
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/* sx_slock(&allproc_lock); */
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if (!LIST_EMPTY(&allproc))
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p = LIST_FIRST(&allproc);
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else
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p = &proc0;
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db_setup_paging(db_simple_pager, &quit, DB_LINES_PER_PAGE);
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db_printf(" pid proc uarea uid ppid pgrp flag stat wmesg wchan cmd\n");
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while (--np >= 0 && !quit) {
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if (p == NULL) {
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printf("oops, ran out of processes early!\n");
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break;
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}
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/* PROC_LOCK(p); */
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pp = p->p_pptr;
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if (pp == NULL)
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pp = p;
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switch(p->p_state) {
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case PRS_NORMAL:
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if (P_SHOULDSTOP(p))
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state = "stop";
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else
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state = "";
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break;
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case PRS_NEW:
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state = "new ";
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break;
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case PRS_ZOMBIE:
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state = "zomb";
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break;
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default:
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state = "Unkn";
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break;
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}
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db_printf("%5d %8p %8p %4d %5d %5d %07x %s",
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p->p_pid, (volatile void *)p, (void *)p->p_uarea,
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p->p_ucred != NULL ? p->p_ucred->cr_ruid : 0, pp->p_pid,
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p->p_pgrp != NULL ? p->p_pgrp->pg_id : 0, p->p_flag,
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state);
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if (p->p_flag & P_SA)
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db_printf("(threaded) %s\n", p->p_comm);
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FOREACH_THREAD_IN_PROC(p, td) {
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dumpthread(p, td);
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if (quit)
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break;
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}
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/* PROC_UNLOCK(p); */
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p = LIST_NEXT(p, p_list);
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if (p == NULL && np > 0)
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p = LIST_FIRST(&zombproc);
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}
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/* sx_sunlock(&allproc_lock); */
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}
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static void
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dumpthread(volatile struct proc *p, volatile struct thread *td)
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{
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if (p->p_flag & P_SA)
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db_printf( " thread %p ksegrp %p ", td, td->td_ksegrp);
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if (TD_ON_SLEEPQ(td))
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db_printf("[SLPQ %s %p]", td->td_wmesg, (void *)td->td_wchan);
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switch (td->td_state) {
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case TDS_INHIBITED:
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if (TD_ON_LOCK(td)) {
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db_printf("[LOCK %6s %8p]",
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td->td_lockname,
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(void *)td->td_blocked);
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}
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if (TD_IS_SLEEPING(td)) {
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db_printf("[SLP]");
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}
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if (TD_IS_SWAPPED(td)) {
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db_printf("[SWAP]");
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}
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if (TD_IS_SUSPENDED(td)) {
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db_printf("[SUSP]");
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}
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if (TD_AWAITING_INTR(td)) {
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db_printf("[IWAIT]");
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}
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break;
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case TDS_CAN_RUN:
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db_printf("[Can run]");
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break;
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case TDS_RUNQ:
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db_printf("[RUNQ]");
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break;
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case TDS_RUNNING:
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db_printf("[CPU %d]", td->td_oncpu);
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break;
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case TDS_INACTIVE:
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db_printf("[INACTIVE]");
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break;
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default:
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db_printf("[UNK: %#x]", td->td_state);
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}
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if (p->p_flag & P_SA) {
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if (td->td_kse)
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db_printf("[kse %p]", td->td_kse);
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db_printf("\n");
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} else
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db_printf(" %s\n", p->p_comm);
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}
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