arc: Use get_signal() signal_setup_done()

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

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 15 insertions, 24 deletions

diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
index 7e95e1a86510..c2031e20c048 100644
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -179,14 +179,13 @@ static inline int map_sig(int sig)
 }
 
 static int
-setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info,
-               sigset_t *set, struct pt_regs *regs)
+setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
 {
         struct rt_sigframe __user *sf;
         unsigned int magic = 0;
         int err = 0;
 
-        sf = get_sigframe(ka, regs, sizeof(struct rt_sigframe));
+        sf = get_sigframe(&ksig->ka, regs, sizeof(struct rt_sigframe));
         if (!sf)
                 return 1;
 
@@ -205,8 +204,8 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info,
          *  #2: struct siginfo
          *  #3: struct ucontext (completely populated)
          */
-        if (unlikely(ka->sa.sa_flags & SA_SIGINFO)) {
-                err |= copy_siginfo_to_user(&sf->info, info);
+        if (unlikely(ksig->ka.sa.sa_flags & SA_SIGINFO)) {
+                err |= copy_siginfo_to_user(&sf->info, &ksig->info);
                 err |= __put_user(0, &sf->uc.uc_flags);
                 err |= __put_user(NULL, &sf->uc.uc_link);
                 err |= __save_altstack(&sf->uc.uc_stack, regs->sp);
@@ -227,16 +226,16 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info,
                 return err;
 
         /* #1 arg to the user Signal handler */
-        regs->r0 = map_sig(signo);
+        regs->r0 = map_sig(ksig->sig);
 
         /* setup PC of user space signal handler */
-        regs->ret = (unsigned long)ka->sa.sa_handler;
+        regs->ret = (unsigned long)ksig->ka.sa.sa_handler;
 
         /*
          * handler returns using sigreturn stub provided already by userpsace
          */
-        BUG_ON(!(ka->sa.sa_flags & SA_RESTORER));
-        regs->blink = (unsigned long)ka->sa.sa_restorer;
+        BUG_ON(!(ksig->ka.sa.sa_flags & SA_RESTORER));
+        regs->blink = (unsigned long)ksig->ka.sa.sa_restorer;
 
         /* User Stack for signal handler will be above the frame just carved */
         regs->sp = (unsigned long)sf;
@@ -298,38 +297,30 @@ static void arc_restart_syscall(struct k_sigaction *ka, struct pt_regs *regs)
  * OK, we're invoking a handler
  */
 static void
-handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
-              struct pt_regs *regs)
+handle_signal(struct ksignal *ksig, struct pt_regs *regs)
 {
         sigset_t *oldset = sigmask_to_save();
         int ret;
 
         /* Set up the stack frame */
-        ret = setup_rt_frame(sig, ka, info, oldset, regs);
+        ret = setup_rt_frame(ksig, oldset, regs);
 
-        if (ret)
-                force_sigsegv(sig, current);
-        else
-                signal_delivered(sig, info, ka, regs, 0);
+        signal_setup_done(ret, ksig, 0);
 }
 
 void do_signal(struct pt_regs *regs)
 {
-        struct k_sigaction ka;
-        siginfo_t info;
-        int signr;
+        struct ksignal ksig;
         int restart_scall;
 
-        signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-
         restart_scall = in_syscall(regs) && syscall_restartable(regs);
 
-        if (signr > 0) {
+        if (get_signal(&ksig)) {
                 if (restart_scall) {
-                        arc_restart_syscall(&ka, regs);
+                        arc_restart_syscall(&ksig.ka, regs);
                         syscall_wont_restart(regs);     /* No more restarts */
                 }
-                handle_signal(signr, &ka, &info, regs);
+                handle_signal(&ksig, regs);
                 return;
         }