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Commit e19c025b authored by Richard Weinberger's avatar Richard Weinberger Committed by Richard Weinberger
Browse files

c6x: Use get_signal() signal_setup_done() 



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

Tested-by: default avatarMark Salter <msalter@redhat.com>
Acked-by: default avatarMark Salter <msalter@redhat.com>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 1270cff1

arch/c6x/kernel/signal.c

+18 −25
Original line number Diff line number Diff line
@@ -146,21 +146,21 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, 
	return (void __user *)((sp - framesize) & ~7);

}



static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,

			   sigset_t *set, struct pt_regs *regs)

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

			  struct pt_regs *regs)

{

	struct rt_sigframe __user *frame;

	unsigned long __user *retcode;

	int err = 0;



	frame = get_sigframe(ka, regs, sizeof(*frame));

	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));



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

		goto segv_and_exit;

		return -EFAULT;



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

	err |= __put_user(&frame->uc, &frame->puc);

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

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



	/* Clear all the bits of the ucontext we don't use.  */

	err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
@@ -188,7 +188,7 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, 
#undef COPY



	if (err)

		goto segv_and_exit;

		return -EFAULT;



	flush_icache_range((unsigned long) &frame->retcode,

			   (unsigned long) &frame->retcode + RETCODE_SIZE);
@@ -198,10 +198,10 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, 
	/* Change user context to branch to signal handler */

	regs->sp = (unsigned long) frame - 8;

	regs->b3 = (unsigned long) retcode;

	regs->pc = (unsigned long) ka->sa.sa_handler;

	regs->pc = (unsigned long) ksig->ka.sa.sa_handler;



	/* Give the signal number to the handler */

	regs->a4 = signr;

	regs->a4 = ksig->sig;



	/*

	 * For realtime signals we must also set the second and third
@@ -212,10 +212,6 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, 
	regs->a6 = (unsigned long)&frame->uc;



	return 0;



segv_and_exit:

	force_sigsegv(signr, current);

	return -EFAULT;

}



static inline void
@@ -245,10 +241,11 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) 
/*

 * handle the actual delivery of a signal to userspace

 */

static void handle_signal(int sig,

			 siginfo_t *info, struct k_sigaction *ka,

			 struct pt_regs *regs, int syscall)

static void handle_signal(struct ksignal *ksig, struct pt_regs *regs,

			  int syscall)

{

	int ret;



	/* Are we from a system call? */

	if (syscall) {

		/* If so, check system call restarting.. */
@@ -259,7 +256,7 @@ static void handle_signal(int sig, 
			break;



		case -ERESTARTSYS:

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

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

				regs->a4 = -EINTR;

				break;

			}
@@ -272,9 +269,8 @@ static void handle_signal(int sig, 
	}



	/* Set up the stack frame */

	if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)

		return;

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

	ret = setup_rt_frame(ksig, sigmask_to_save(), regs);

	signal_setup_done(ret, ksig, 0);

}



/*
@@ -282,18 +278,15 @@ static void handle_signal(int sig, 
 */

static void do_signal(struct pt_regs *regs, int syscall)

{

	struct k_sigaction ka;

	siginfo_t info;

	int signr;

	struct ksignal ksig;



	/* we want the common case to go fast, which is why we may in certain

	 * cases get here from kernel mode */

	if (!user_mode(regs))

		return;



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

	if (signr > 0) {

		handle_signal(signr, &info, &ka, regs, syscall);

	if (get_signal(&ksig)) {

		handle_signal(&ksig, regs, syscall);

		return;

	}