mirror of
https://github.com/sstefani/mtrace.git
synced 2025-12-06 16:56:41 +08:00
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
/*
|
|
* This file is part of mtrace-ng.
|
|
* Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
|
|
*
|
|
* This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <asm/unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "backend.h"
|
|
#include "breakpoint.h"
|
|
#include "debug.h"
|
|
#include "event.h"
|
|
#include "options.h"
|
|
#include "report.h"
|
|
#include "task.h"
|
|
#include "library.h"
|
|
#include "main.h"
|
|
|
|
int skip_breakpoint(struct task *task, struct breakpoint *bp)
|
|
{
|
|
debug(DEBUG_PROCESS, "pid=%d, addr=%#lx", task->pid, bp->addr);
|
|
|
|
if (task->event.type != EVENT_NONE)
|
|
return 1;
|
|
|
|
if (bp->enabled && !bp->hw) {
|
|
int ret = 0;
|
|
struct timespec start;
|
|
|
|
if (unlikely(options.verbose > 1))
|
|
start_time(&start);
|
|
|
|
breakpoint_disable(task, bp);
|
|
ret = do_singlestep(task);
|
|
breakpoint_enable(task, bp);
|
|
|
|
if (unlikely(options.verbose > 1))
|
|
set_timer(&start, &skip_bp_time);
|
|
|
|
if (unlikely(ret)) {
|
|
if (unlikely(ret == 1))
|
|
task->skip_bp = breakpoint_get(bp);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
continue_task(task, 0);
|
|
return 0;
|
|
}
|
|
|
|
void fix_about_exit(struct task *task)
|
|
{
|
|
if (task->about_exit) {
|
|
task->about_exit = 0;
|
|
|
|
continue_task(task, 0);
|
|
}
|
|
}
|
|
|
|
void detach_task(struct task *task)
|
|
{
|
|
int sig = 0;
|
|
|
|
task_reset_bp(task);
|
|
|
|
if (task->event.type == EVENT_SIGNAL)
|
|
sig = task->event.e_un.signum;
|
|
else
|
|
if (task->event.type == EVENT_BREAKPOINT)
|
|
breakpoint_put(task->event.e_un.breakpoint);
|
|
|
|
remove_event(task);
|
|
breakpoint_hw_destroy(task);
|
|
fix_about_exit(task);
|
|
untrace_task(task, sig);
|
|
}
|
|
|
|
static void detach_cb(struct task *task, void *data)
|
|
{
|
|
remove_task(task);
|
|
}
|
|
|
|
void detach_proc(struct task *leader)
|
|
{
|
|
assert(leader->leader == leader);
|
|
|
|
breakpoint_disable_all(leader);
|
|
|
|
if (unlikely(options.verbose > 1))
|
|
fprintf(stderr, "+++ process detach pid=%d +++\n", leader->pid);
|
|
|
|
each_task(leader, &detach_cb, NULL);
|
|
}
|
|
|