x86: signal: move {setup|restore}_sigcontext()

Impact: cleanup

Move {setup|restore}_sigcontext() declaration onto head of file.

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

1 files changed, 74 insertions, 74 deletions

diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 32718f5e4f61..771c8fcc8b0d 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -50,28 +50,6 @@
 # define FIX_EFLAGS     __FIX_EFLAGS
 #endif
 
-#ifdef CONFIG_X86_32
-asmlinkage int sys_sigaltstack(unsigned long bx)
-{
-        /*
-         * This is needed to make gcc realize it doesn't own the
-         * "struct pt_regs"
-         */
-        struct pt_regs *regs = (struct pt_regs *)&bx;
-        const stack_t __user *uss = (const stack_t __user *)bx;
-        stack_t __user *uoss = (stack_t __user *)regs->cx;
-
-        return do_sigaltstack(uss, uoss, regs->sp);
-}
-#else /* !CONFIG_X86_32 */
-asmlinkage long
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
-                struct pt_regs *regs)
-{
-        return do_sigaltstack(uss, uoss, regs->sp);
-}
-#endif /* CONFIG_X86_32 */
-
 #define COPY(x)                 {               \
         err |= __get_user(regs->x, &sc->x);     \
 }
@@ -82,9 +60,6 @@ sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
                 regs->seg = tmp | 3;                    \
 }
 
-/*
- * Do a signal return; undo the signal stack.
- */
 static int
 restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
                    unsigned long *pax)
@@ -138,54 +113,6 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
         return err;
 }
 
-static long do_rt_sigreturn(struct pt_regs *regs)
-{
-        struct rt_sigframe __user *frame;
-        unsigned long ax;
-        sigset_t set;
-
-        frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
-        if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-                goto badframe;
-        if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
-                goto badframe;
-
-        sigdelsetmask(&set, ~_BLOCKABLE);
-        spin_lock_irq(&current->sighand->siglock);
-        current->blocked = set;
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
-
-        if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
-                goto badframe;
-
-        if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
-                goto badframe;
-
-        return ax;
-
-badframe:
-        signal_fault(regs, frame, "rt_sigreturn");
-        return 0;
-}
-
-#ifdef CONFIG_X86_32
-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
-{
-        struct pt_regs *regs = (struct pt_regs *)&__unused;
-
-        return do_rt_sigreturn(regs);
-}
-#else /* !CONFIG_X86_32 */
-asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
-{
-        return do_rt_sigreturn(regs);
-}
-#endif /* CONFIG_X86_32 */
-
-/*
- * Set up a signal frame.
- */
 static int
 setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
                  struct pt_regs *regs, unsigned long mask)
@@ -247,10 +174,83 @@ setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
         return err;
 }
 
+#ifdef CONFIG_X86_32
+asmlinkage int sys_sigaltstack(unsigned long bx)
+{
+        /*
+         * This is needed to make gcc realize it doesn't own the
+         * "struct pt_regs"
+         */
+        struct pt_regs *regs = (struct pt_regs *)&bx;
+        const stack_t __user *uss = (const stack_t __user *)bx;
+        stack_t __user *uoss = (stack_t __user *)regs->cx;
+
+        return do_sigaltstack(uss, uoss, regs->sp);
+}
+#else /* !CONFIG_X86_32 */
+asmlinkage long
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
+                struct pt_regs *regs)
+{
+        return do_sigaltstack(uss, uoss, regs->sp);
+}
+#endif /* CONFIG_X86_32 */
+
 /*
- * Determine which stack to use..
+ * Do a signal return; undo the signal stack.
+ */
+static long do_rt_sigreturn(struct pt_regs *regs)
+{
+        struct rt_sigframe __user *frame;
+        unsigned long ax;
+        sigset_t set;
+
+        frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
+        if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+                goto badframe;
+        if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+                goto badframe;
+
+        sigdelsetmask(&set, ~_BLOCKABLE);
+        spin_lock_irq(&current->sighand->siglock);
+        current->blocked = set;
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+
+        if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
+                goto badframe;
+
+        if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
+                goto badframe;
+
+        return ax;
+
+badframe:
+        signal_fault(regs, frame, "rt_sigreturn");
+        return 0;
+}
+
+#ifdef CONFIG_X86_32
+asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+{
+        struct pt_regs *regs = (struct pt_regs *)&__unused;
+
+        return do_rt_sigreturn(regs);
+}
+#else /* !CONFIG_X86_32 */
+asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
+{
+        return do_rt_sigreturn(regs);
+}
+#endif /* CONFIG_X86_32 */
+
+/*
+ * Set up a signal frame.
  */
 
+/*
+ * Determine which stack to use..
+ */
 static void __user *
 get_stack(struct k_sigaction *ka, unsigned long sp, unsigned long size)
 {