psc_dbg_breakpoint.c

来自「fsmlabs的real time linux的内核」· C语言 代码 · 共 46 行

/*
 * (C) Finite State Machine Labs Inc. 2000 [e-mail]
 *
 * Released under the terms of GPL 2.
 * Open RTLinux makes use of a patented process described in
 * US Patent 5,995,745. Use of this process is governed
 * by the Open RTLinux Patent License which can be obtained from
 * www.fsmlabs.com/PATENT or by sending email to
 * [e-mail]
 */

#include <rtlinux_debug.h>
#include <rtlinux_signal.h>
#include <stdio.h>
#include <errno.h>

void breakpoint_generator(int whatever)
{
	/* just call a breakpoint */
	breakpoint();
}

int main(void)
{
	struct rtlinux_sigaction mysig, oldsig;

	mysig.sa_handler = breakpoint_generator;
	mysig.sa_flags = RTLINUX_SA_ONESHOT;
	mysig.sa_period = NSECS_PER_SEC / 4;

	if (rtlinux_sigaction(RTLINUX_SIGTIMER0, &mysig, &oldsig)) {
		perror("rtlinux_sigaction");
		return errno;
	}

	sleep(5);

	mysig.sa_handler = RTLINUX_SIG_IGN;
	if (rtlinux_sigaction(RTLINUX_SIGTIMER0, &mysig, &oldsig)) {
		perror("rtlinux_sigaction");
		return errno;
	}

	return 0;
}