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Diffstat (limited to 'arch/m68k/include/asm/processor.h')
-rw-r--r--arch/m68k/include/asm/processor.h13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h
index 7a6a7590cc0..278c69bad57 100644
--- a/arch/m68k/include/asm/processor.h
+++ b/arch/m68k/include/asm/processor.h
@@ -20,23 +20,26 @@
20 20
21static inline unsigned long rdusp(void) 21static inline unsigned long rdusp(void)
22{ 22{
23#ifdef CONFIG_COLDFIRE 23#ifdef CONFIG_COLDFIRE_SW_A7
24 extern unsigned int sw_usp; 24 extern unsigned int sw_usp;
25 return sw_usp; 25 return sw_usp;
26#else 26#else
27 unsigned long usp; 27 register unsigned long usp __asm__("a0");
28 __asm__ __volatile__("move %/usp,%0" : "=a" (usp)); 28 /* move %usp,%a0 */
29 __asm__ __volatile__(".word 0x4e68" : "=a" (usp));
29 return usp; 30 return usp;
30#endif 31#endif
31} 32}
32 33
33static inline void wrusp(unsigned long usp) 34static inline void wrusp(unsigned long usp)
34{ 35{
35#ifdef CONFIG_COLDFIRE 36#ifdef CONFIG_COLDFIRE_SW_A7
36 extern unsigned int sw_usp; 37 extern unsigned int sw_usp;
37 sw_usp = usp; 38 sw_usp = usp;
38#else 39#else
39 __asm__ __volatile__("move %0,%/usp" : : "a" (usp)); 40 register unsigned long a0 __asm__("a0") = usp;
41 /* move %a0,%usp */
42 __asm__ __volatile__(".word 0x4e60" : : "a" (a0) );
40#endif 43#endif
41} 44}
42 45