x86: use _ASM_EXTABLE macro in include/asm-x86/futex.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/futex.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/include/asm-x86/futex.h b/include/asm-x86/futex.h
index 9d91926..cd9f894 100644 (file)
--- a/include/asm-x86/futex.h
+++ b/include/asm-x86/futex.h
@@ -17,11 +17,8 @@
 "2:    .section .fixup,\"ax\"\n                                \
 3:     mov     %3, %1\n                                        \
        jmp     2b\n                                            \
-       .previous\n                                             \
-       .section __ex_table,\"a\"\n                             \
-       .align  8\n"                                            \
-       _ASM_PTR "1b,3b\n                                       \
-       .previous"                                              \
+       .previous\n"                                            \
+       _ASM_EXTABLE(1b,3b)                                     \
        : "=r" (oldval), "=r" (ret), "+m" (*uaddr)              \
        : "i" (-EFAULT), "0" (oparg), "1" (0))
 
@@ -35,11 +32,9 @@
 3:     .section .fixup,\"ax\"\n                                \
 4:     mov     %5, %1\n                                        \
        jmp     3b\n                                            \
-       .previous\n                                             \
-       .section __ex_table,\"a\"\n                             \
-       .align  8\n"                                            \
-       _ASM_PTR "1b,4b,2b,4b\n                                 \
-       .previous"                                              \
+       .previous\n"                                            \
+       _ASM_EXTABLE(1b,4b)                                     \
+       _ASM_EXTABLE(2b,4b)                                     \
        : "=&a" (oldval), "=&r" (ret), "+m" (*uaddr),           \
          "=&r" (tem)                                           \
        : "r" (oparg), "i" (-EFAULT), "1" (0))
@@ -111,18 +106,12 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
                return -EFAULT;
 
        __asm__ __volatile__(
-
                "1:     lock; cmpxchgl %3, %1                   \n"
                "2:     .section .fixup, \"ax\"                 \n"
                "3:     mov     %2, %0                          \n"
                "       jmp     2b                              \n"
                "       .previous                               \n"
-
-               "       .section __ex_table, \"a\"              \n"
-               "       .align  8                               \n"
-                       _ASM_PTR " 1b,3b                        \n"
-               "       .previous                               \n"
-
+               _ASM_EXTABLE(1b,3b)
                : "=a" (oldval), "+m" (*uaddr)
                : "i" (-EFAULT), "r" (newval), "0" (oldval)
                : "memory"