ARM: Use a definition for the userspace cmpxchg emulation syscall

[safe/jmp/linux-2.6] / arch / arm / kernel / entry-armv.S

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 0022b4d..d2903e3 100644 (file)
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -21,6 +21,7 @@
 #include <mach/entry-macro.S>
 #include <asm/thread_notify.h>
 #include <asm/unwind.h>
+#include <asm/unistd.h>
 
 #include "entry-header.S"
 
@@ -908,10 +909,10 @@ __kuser_cmpxchg:                          @ 0xffff0fc0
         * A special ghost syscall is used for that (see traps.c).
         */
        stmfd   sp!, {r7, lr}
-       mov     r7, #0xff00             @ 0xfff0 into r7 for EABI
-       orr     r7, r7, #0xf0
-       swi     #0x9ffff0
+       ldr     r7, =1f                 @ it's 20 bits
+       swi     __ARM_NR_cmpxchg
        ldmfd   sp!, {r7, pc}
+1:     .word   __ARM_NR_cmpxchg
 
 #elif __LINUX_ARM_ARCH__ < 6