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c6x: Use get_signal() signal_setup_done()

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

Tested-by: Mark Salter <msalter@redhat.com>
Acked-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger 2013-10-06 23:09:48 +02:00 committed by Richard Weinberger
parent 1270cff147
commit e19c025bc9
1 changed files with 18 additions and 25 deletions
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43
arch/c6x/kernel/signal.c
View file

@ -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;
}