C++ (Cpp) compat_setup_rt_frame Examples

Example #1

File: signal.c Project: Artox/linux

/*
 * OK, we're invoking a handler
 */
static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
	struct task_struct *tsk = current;
	sigset_t *oldset = sigmask_to_save();
	int usig = ksig->sig;
	int ret;

	/*
	 * Set up the stack frame
	 */
	if (is_compat_task()) {
		if (ksig->ka.sa.sa_flags & SA_SIGINFO)
			ret = compat_setup_rt_frame(usig, ksig, oldset, regs);
		else
			ret = compat_setup_frame(usig, ksig, oldset, regs);
	} else {
		ret = setup_rt_frame(usig, ksig, oldset, regs);
	}

	/*
	 * Check that the resulting registers are actually sane.
	 */
	ret |= !valid_user_regs(&regs->user_regs, current);

	/*
	 * Fast forward the stepping logic so we step into the signal
	 * handler.
	 */
	if (!ret)
		user_fastforward_single_step(tsk);

	signal_setup_done(ret, ksig, 0);
}

Example #2

File: signal.c Project: ANFS/ANFS-kernel

static int handle_signal(unsigned long sig, siginfo_t *info,
			 struct k_sigaction *ka, sigset_t *oldset,
			 struct pt_regs *regs)
{
	int ret;


	/* Are we from a system call? */
	if (regs->faultnum == INT_SWINT_1) {
		/* If so, check system call restarting.. */
		switch (regs->regs[0]) {
		case -ERESTART_RESTARTBLOCK:
		case -ERESTARTNOHAND:
			regs->regs[0] = -EINTR;
			break;

		case -ERESTARTSYS:
			if (!(ka->sa.sa_flags & SA_RESTART)) {
				regs->regs[0] = -EINTR;
				break;
			}
			/* fallthrough */
		case -ERESTARTNOINTR:
			/* Reload caller-saves to restore r0..r5 and r10. */
			regs->flags |= PT_FLAGS_CALLER_SAVES;
			regs->regs[0] = regs->orig_r0;
			regs->pc -= 8;
		}
	}

	/* Set up the stack frame */
#ifdef CONFIG_COMPAT
	if (is_compat_task())
		ret = compat_setup_rt_frame(sig, ka, info, oldset, regs);
	else
#endif
		ret = setup_rt_frame(sig, ka, info, oldset, regs);
	if (ret == 0) {
		/* This code is only called from system calls or from
		 * the work_pending path in the return-to-user code, and
		 * either way we can re-enable interrupts unconditionally.
		 */
		spin_lock_irq(&current->sighand->siglock);
		sigorsets(&current->blocked,
			  &current->blocked, &ka->sa.sa_mask);
		if (!(ka->sa.sa_flags & SA_NODEFER))
			sigaddset(&current->blocked, sig);
		recalc_sigpending();
		spin_unlock_irq(&current->sighand->siglock);
	}

	return ret;
}

Example #3

File: signal.c Project: Eyeless95/samsung_g531h_kernel

/*
 * OK, we're invoking a handler
 */
static void handle_signal(unsigned long sig, struct k_sigaction *ka,
			  siginfo_t *info, struct pt_regs *regs)
{
	struct thread_info *thread = current_thread_info();
	struct task_struct *tsk = current;
	sigset_t *oldset = sigmask_to_save();
	int usig = sig;
	int ret;

	/*
	 * translate the signal
	 */
	if (usig < 32 && thread->exec_domain && thread->exec_domain->signal_invmap)
		usig = thread->exec_domain->signal_invmap[usig];

	/*
	 * Set up the stack frame
	 */
	if (is_compat_task()) {
		if (ka->sa.sa_flags & SA_SIGINFO)
			ret = compat_setup_rt_frame(usig, ka, info, oldset,
						    regs);
		else
			ret = compat_setup_frame(usig, ka, oldset, regs);
	} else {
		ret = setup_rt_frame(usig, ka, info, oldset, regs);
	}

	/*
	 * Check that the resulting registers are actually sane.
	 */
	ret |= !valid_user_regs(&regs->user_regs);

	if (ret != 0) {
		force_sigsegv(sig, tsk);
		return;
	}

	/*
	 * Fast forward the stepping logic so we step into the signal
	 * handler.
	 */
	user_fastforward_single_step(tsk);

	signal_delivered(sig, info, ka, regs, 0);
}

Example #4

File: signal.c Project: DirtyDroidX/android_kernel_htc_m8ul

static int handle_signal(unsigned long sig, siginfo_t *info,
			 struct k_sigaction *ka, sigset_t *oldset,
			 struct pt_regs *regs)
{
	int ret;

	
	if (regs->faultnum == INT_SWINT_1) {
		
		switch (regs->regs[0]) {
		case -ERESTART_RESTARTBLOCK:
		case -ERESTARTNOHAND:
			regs->regs[0] = -EINTR;
			break;

		case -ERESTARTSYS:
			if (!(ka->sa.sa_flags & SA_RESTART)) {
				regs->regs[0] = -EINTR;
				break;
			}
			
		case -ERESTARTNOINTR:
			
			regs->flags |= PT_FLAGS_CALLER_SAVES;
			regs->regs[0] = regs->orig_r0;
			regs->pc -= 8;
		}
	}

	
#ifdef CONFIG_COMPAT
	if (is_compat_task())
		ret = compat_setup_rt_frame(sig, ka, info, oldset, regs);
	else
#endif
		ret = setup_rt_frame(sig, ka, info, oldset, regs);
	if (ret == 0) {
		block_sigmask(ka, sig);
	}

	return ret;
}

Example #5

File: signal.c Project: 1800alex/linux

static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
	sigset_t *oldset = sigmask_to_save();
	int ret;

	/* Are we from a system call? */
	if (regs->faultnum == INT_SWINT_1) {
		/* If so, check system call restarting.. */
		switch (regs->regs[0]) {
		case -ERESTART_RESTARTBLOCK:
		case -ERESTARTNOHAND:
			regs->regs[0] = -EINTR;
			break;

		case -ERESTARTSYS:
			if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
				regs->regs[0] = -EINTR;
				break;
			}
			/* fallthrough */
		case -ERESTARTNOINTR:
			/* Reload caller-saves to restore r0..r5 and r10. */
			regs->flags |= PT_FLAGS_CALLER_SAVES;
			regs->regs[0] = regs->orig_r0;
			regs->pc -= 8;
		}
	}

	/* Set up the stack frame */
#ifdef CONFIG_COMPAT
	if (is_compat_task())
		ret = compat_setup_rt_frame(ksig, oldset, regs);
	else
#endif
		ret = setup_rt_frame(ksig, oldset, regs);

	signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
}

Example #6

File: example140.c Project: antoniocorreia/cprojects

#ifdef CONFIG_COMPAT
if (is_compat_task())
		ret = compat_setup_rt_frame(ksig, oldset, regs);
	else
#endif
		ret = setup_rt_frame(ksig, oldset, regs);