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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-09 23:53:29 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-10 08:41:12 +0000 |
| commit | cc20d42986d5807cbe4f5c7c8e3dab2e59ea0db3 (patch) | |
| tree | aa71962250e2548a5079b5556436d924e14292fe /arch/arm/kernel/entry-armv.S | |
| parent | bfd2e29f04e5f048ea62677811d1244badd6661e (diff) | |
| download | blackbird-op-linux-cc20d42986d5807cbe4f5c7c8e3dab2e59ea0db3.tar.gz blackbird-op-linux-cc20d42986d5807cbe4f5c7c8e3dab2e59ea0db3.zip | |
ARM: Use a definition for the userspace cmpxchg emulation syscall
Use a definition for the cmpxchg SWI instead of hard-coding the number.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 0022b4d57f8b..d2903e3bc861 100644 --- 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 |
