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Commit 548dafe8 authored by Richard Weinberger's avatar Richard Weinberger Committed by Jonas Bonn
Browse files

openrisc: 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>
Signed-off-by: default avatarJonas Bonn <jonas@southpole.se>
parent 10f67dbf

arch/openrisc/kernel/signal.c

+22 −37
Original line number Diff line number Diff line
@@ -166,20 +166,21 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, 
 * trampoline which performs the syscall sigreturn, or a provided

 * user-mode trampoline.

 */

static int setup_rt_frame(int sig, 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 *frame;

	unsigned long return_ip;

	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 give_sigsegv;

		return -EFAULT;



	/* Create siginfo.  */

	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 ucontext.  */

	err |= __put_user(0, &frame->uc.uc_flags);
@@ -190,7 +191,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));



	if (err)

		goto give_sigsegv;

		return -EFAULT;



	/* trampoline - the desired return ip is the retcode itself */

	return_ip = (unsigned long)&frame->retcode;
@@ -204,14 +205,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
	err |= __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));



	if (err)

		goto give_sigsegv;

		return -EFAULT;



	/* TODO what is the current->exec_domain stuff and invmap ? */



	/* Set up registers for signal handler */

	regs->pc = (unsigned long)ka->sa.sa_handler; /* what we enter NOW */

	regs->pc = (unsigned long)ksig->ka.sa.sa_handler; /* what we enter NOW */

	regs->gpr[9] = (unsigned long)return_ip;     /* what we enter LATER */

	regs->gpr[3] = (unsigned long)sig;           /* arg 1: signo */

	regs->gpr[3] = (unsigned long)ksig->sig;           /* arg 1: signo */

	regs->gpr[4] = (unsigned long)&frame->info;  /* arg 2: (siginfo_t*) */

	regs->gpr[5] = (unsigned long)&frame->uc;    /* arg 3: ucontext */
@@ -219,25 +220,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
	regs->sp = (unsigned long)frame;



	return 0;



give_sigsegv:

	force_sigsegv(sig, current);

	return -EFAULT;

}



static inline void

handle_signal(unsigned long sig,

	      siginfo_t *info, struct k_sigaction *ka,

	      struct pt_regs *regs)

handle_signal(struct ksignal *ksig, struct pt_regs *regs)

{

	int ret;



	ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);

	if (ret)

		return;

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



	signal_delivered(sig, info, ka, regs,

				 test_thread_flag(TIF_SINGLESTEP));

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

}



/*
@@ -254,9 +246,7 @@ handle_signal(unsigned long sig, 


int do_signal(struct pt_regs *regs, int syscall)

{

	siginfo_t info;

	int signr;

	struct k_sigaction ka;

	struct ksignal ksig;

	unsigned long continue_addr = 0;

	unsigned long restart_addr = 0;

	unsigned long retval = 0;
@@ -286,28 +276,23 @@ int do_signal(struct pt_regs *regs, int syscall) 
	}



	/*

	 * Get the signal to deliver.  When running under ptrace, at this

	 * point the debugger may change all our registers ...

	 * Get the signal to deliver.  During the call to get_signal the

	 * debugger may change all our registers so we may need to revert

	 * the decision to restart the syscall; specifically, if the PC is

	 * changed, don't restart the syscall.

	 */

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

	/*

	 * Depending on the signal settings we may need to revert the

	 * decision to restart the system call.  But skip this if a

	 * debugger has chosen to restart at a different PC.

	 */

	if (signr > 0) {

	if (get_signal(&ksig)) {

		if (unlikely(restart) && regs->pc == restart_addr) {

			if (retval == -ERESTARTNOHAND ||

			    retval == -ERESTART_RESTARTBLOCK

			    || (retval == -ERESTARTSYS

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

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

				/* No automatic restart */

				regs->gpr[11] = -EINTR;

				regs->pc = continue_addr;

			}

		}



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

		handle_signal(&ksig, regs);

	} else {

		/* no handler */

		restore_saved_sigmask();