diff options
Diffstat (limited to 'include/asm-m68k/system.h')
| -rw-r--r-- | include/asm-m68k/system.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/asm-m68k/system.h b/include/asm-m68k/system.h index 86d3d38f1..03353e44c 100644 --- a/include/asm-m68k/system.h +++ b/include/asm-m68k/system.h @@ -43,12 +43,14 @@ extern inline void wrusp(unsigned long usp) { * the mm structures are shared in d2 (to avoid atc flushing). */ asmlinkage void resume(void); -#define switch_to(prev,next) { \ +#define switch_to(prev,next,last) { \ register void *_prev __asm__ ("a0") = (prev); \ register void *_next __asm__ ("a1") = (next); \ + register void *_last __asm__ ("d1"); \ __asm__ __volatile__("jbsr " SYMBOL_NAME_STR(resume) \ - : : "a" (_prev), "a" (_next) \ + : "=d" (_last) : "a" (_prev), "a" (_next) \ : "d0", "d1", "d2", "d3", "d4", "d5", "a0", "a1"); \ + (last) = _last; \ } #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) @@ -66,6 +68,8 @@ struct __xchg_dummy { unsigned long a[100]; }; #define __cli() __asm__ __volatile__ ("oriw #0x0700,%/sr": : : "memory") #define nop() __asm__ __volatile__ ("nop"::) #define mb() __asm__ __volatile__ ("" : : :"memory") +#define rmb() __asm__ __volatile__ ("" : : :"memory") +#define wmb() __asm__ __volatile__ ("" : : :"memory") #define __save_flags(x) \ __asm__ __volatile__("movew %/sr,%0":"=d" (x) : /* no input */ :"memory") |