loaddebug(&current->thread, 7); 
set_debugreg(current->thread.debugreg[7], 7); 
int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset){	siginfo_t info;	int signr;	struct k_sigaction ka;	/*	 * We want the common case to go fast, which	 * is why we may in certain cases get here from	 * kernel mode. Just return without doing anything	 * if so.	 */	if ((regs->xcs & 3) != 3)		return 1;	if (current->flags & PF_FREEZE) {		refrigerator(0);		goto no_signal;	}	if (!oldset)		oldset = &current->blocked;	signr = get_signal_to_deliver(&info, &ka, regs, NULL);	if (signr > 0) {		/* Reenable any watchpoints before delivering the		 * signal to user space. The processor register will		 * have been cleared if the watchpoint triggered		 * inside the kernel.		 */		if (unlikely(current->thread.debugreg[7])) {			loaddebug(&current->thread, 7);		}		/* Whee!  Actually deliver the signal.  */		return handle_signal(signr, &info, &ka, oldset, regs);	} no_signal:	/* Did we come from a system call? */	if (regs->orig_eax >= 0) {		/* Restart the system call - no handlers present */		if (regs->eax == -ERESTARTNOHAND ||		    regs->eax == -ERESTARTSYS ||		    regs->eax == -ERESTARTNOINTR) {			regs->eax = regs->orig_eax;			regs->eip -= 2;		}		if (regs->eax == -ERESTART_RESTARTBLOCK){			regs->eax = __NR_restart_syscall;			regs->eip -= 2;		}	}	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/1cc6f12e03ebc064b74161c684f987284ce9d0cc/signal.c/clean/arch/i386/kernel/signal.c