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Commit 5bdb7611 authored by Richard Weinberger's avatar Richard Weinberger Committed by Richard Weinberger
Browse files

xtensa: Use get_signal() signal_setup_done() 



Use the more generic functions get_signal() signal_setup_done()
for signal delivery.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 649671c9

arch/xtensa/kernel/signal.c

+16 −27
Original line number Diff line number Diff line
@@ -331,17 +331,17 @@ gen_return_code(unsigned char *codemem) 
}





static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info,

		       sigset_t *set, struct pt_regs *regs)

static int setup_frame(struct ksignal *ksig, sigset_t *set,

		       struct pt_regs *regs)

{

	struct rt_sigframe *frame;

	int err = 0;

	int err = 0, sig = ksig->sig;

	int signal;

	unsigned long sp, ra, tp;



	sp = regs->areg[1];



	if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && sas_ss_flags(sp) == 0) {

	if ((ksig->ka.sa.sa_flags & SA_ONSTACK) != 0 && sas_ss_flags(sp) == 0) {

		sp = current->sas_ss_sp + current->sas_ss_size;

	}
@@ -351,7 +351,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
		panic ("Double exception sys_sigreturn\n");



	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) {

		goto give_sigsegv;

		return -EFAULT;

	}



	signal = current_thread_info()->exec_domain
@@ -360,8 +360,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
		? current_thread_info()->exec_domain->signal_invmap[sig]

		: sig;



	if (ka->sa.sa_flags & SA_SIGINFO) {

		err |= copy_siginfo_to_user(&frame->info, info);

	if (ksig->ka.sa.sa_flags & SA_SIGINFO) {

		err |= copy_siginfo_to_user(&frame->info, &ksig->info);

	}



	/* Create the user context.  */
@@ -372,8 +372,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
	err |= setup_sigcontext(frame, regs);

	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));



	if (ka->sa.sa_flags & SA_RESTORER) {

		ra = (unsigned long)ka->sa.sa_restorer;

	if (ksig->ka.sa.sa_flags & SA_RESTORER) {

		ra = (unsigned long)ksig->ka.sa.sa_restorer;

	} else {



		/* Create sys_rt_sigreturn syscall in stack frame */
@@ -381,7 +381,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
		err |= gen_return_code(frame->retcode);



		if (err) {

			goto give_sigsegv;

			return -EFAULT;

		}

		ra = (unsigned long) frame->retcode;

	}
@@ -393,7 +393,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 


	/* Set up registers for signal handler; preserve the threadptr */

	tp = regs->threadptr;

	start_thread(regs, (unsigned long) ka->sa.sa_handler,

	start_thread(regs, (unsigned long) ksig->ka.sa.sa_handler,

		     (unsigned long) frame);



	/* Set up a stack frame for a call4
@@ -416,10 +416,6 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
#endif



	return 0;



give_sigsegv:

	force_sigsegv(sig, current);

	return -EFAULT;

}



/*
@@ -433,15 +429,11 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
 */

static void do_signal(struct pt_regs *regs)

{

	siginfo_t info;

	int signr;

	struct k_sigaction ka;

	struct ksignal ksig;



	task_pt_regs(current)->icountlevel = 0;



	signr = get_signal_to_deliver(&info, &ka, regs, NULL);



	if (signr > 0) {

	if (get_signal(&ksig)) {

		int ret;



		/* Are we from a system call? */
@@ -457,7 +449,7 @@ static void do_signal(struct pt_regs *regs) 
					break;



				case -ERESTARTSYS:

					if (!(ka.sa.sa_flags & SA_RESTART)) {

					if (!(ksig.ka.sa.sa_flags & SA_RESTART)) {

						regs->areg[2] = -EINTR;

						break;

					}
@@ -476,11 +468,8 @@ static void do_signal(struct pt_regs *regs) 


		/* Whee!  Actually deliver the signal.  */

		/* Set up the stack frame */

		ret = setup_frame(signr, &ka, &info, sigmask_to_save(), regs);

		if (ret)

			return;



		signal_delivered(signr, &info, &ka, regs, 0);

		ret = setup_frame(&ksig, sigmask_to_save(), regs);

		signal_setup_done(ret, &ksig, 0);

		if (current->ptrace & PT_SINGLESTEP)

			task_pt_regs(current)->icountlevel = 1;