x86: signal: split out frame setups

Make setup_rt_frame() and split out frame setups from handle_signal().
This is for cosmetic unification of handle_signal().

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 20 insertions, 10 deletions

diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 19e2b9143205..8fbdd23d5cc6 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -195,8 +195,8 @@ get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
         return (void __user *)round_down(sp - size, 64);
 }
 
-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(int sig, struct k_sigaction *ka, siginfo_t *info,
+                            sigset_t *set, struct pt_regs *regs)
 {
         struct rt_sigframe __user *frame;
         void __user *fp = NULL;
@@ -280,6 +280,24 @@ give_sigsegv:
 /*
  * OK, we're invoking a handler
  */
+static int
+setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+               sigset_t *set, struct pt_regs *regs)
+{
+        int ret;
+
+#ifdef CONFIG_IA32_EMULATION
+        if (test_thread_flag(TIF_IA32)) {
+                if (ka->sa.sa_flags & SA_SIGINFO)
+                        ret = ia32_setup_rt_frame(sig, ka, info, set, regs);
+                else
+                        ret = ia32_setup_frame(sig, ka, set, regs);
+        } else
+#endif
+        ret = __setup_rt_frame(sig, ka, info, set, regs);
+
+        return ret;
+}
 
 static int
 handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
@@ -317,14 +335,6 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
             likely(test_and_clear_thread_flag(TIF_FORCED_TF)))
                 regs->flags &= ~X86_EFLAGS_TF;
 
-#ifdef CONFIG_IA32_EMULATION
-        if (test_thread_flag(TIF_IA32)) {
-                if (ka->sa.sa_flags & SA_SIGINFO)
-                        ret = ia32_setup_rt_frame(sig, ka, info, oldset, regs);
-                else
-                        ret = ia32_setup_frame(sig, ka, oldset, regs);
-        } else
-#endif
         ret = setup_rt_frame(sig, ka, info, oldset, regs);
 
         if (ret == 0) {