diff options
author | Ralf Baechle <ralf@linux-mips.org> | 1999-09-28 22:25:29 +0000 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 1999-09-28 22:25:29 +0000 |
commit | 0ae8dceaebe3659ee0c3352c08125f403e77ebca (patch) | |
tree | 5085c389f09da78182b899d19fe1068b619a69dd /include/asm-sparc64/atomic.h | |
parent | 273767781288c35c9d679e908672b9996cda4c34 (diff) |
Merge with 2.3.10.
Diffstat (limited to 'include/asm-sparc64/atomic.h')
-rw-r--r-- | include/asm-sparc64/atomic.h | 90 |
1 files changed, 29 insertions, 61 deletions
diff --git a/include/asm-sparc64/atomic.h b/include/asm-sparc64/atomic.h index 33341d399..96ef1a585 100644 --- a/include/asm-sparc64/atomic.h +++ b/include/asm-sparc64/atomic.h @@ -1,4 +1,4 @@ -/* $Id: atomic.h,v 1.18 1997/08/07 03:38:31 davem Exp $ +/* $Id: atomic.h,v 1.19 1999/07/03 22:11:17 davem Exp $ * atomic.h: Thankfully the V9 is at least reasonable for this * stuff. * @@ -20,66 +20,34 @@ typedef struct { int counter; } atomic_t; #define atomic_read(v) ((v)->counter) #define atomic_set(v, i) (((v)->counter) = i) -extern __inline__ void atomic_add(int i, atomic_t *v) -{ - __asm__ __volatile__(" -1: lduw [%1], %%g5 - add %%g5, %0, %%g7 - cas [%1], %%g5, %%g7 - sub %%g5, %%g7, %%g5 - brnz,pn %%g5, 1b - nop" - : /* No outputs */ - : "HIr" (i), "r" (__atomic_fool_gcc(v)) - : "g5", "g7", "memory"); -} - -extern __inline__ void atomic_sub(int i, atomic_t *v) -{ - __asm__ __volatile__(" -1: lduw [%1], %%g5 - sub %%g5, %0, %%g7 - cas [%1], %%g5, %%g7 - sub %%g5, %%g7, %%g5 - brnz,pn %%g5, 1b - nop" - : /* No outputs */ - : "HIr" (i), "r" (__atomic_fool_gcc(v)) - : "g5", "g7", "memory"); -} - -/* Same as above, but return the result value. */ -extern __inline__ int atomic_add_return(int i, atomic_t *v) -{ - unsigned long oldval; - __asm__ __volatile__(" -1: lduw [%2], %%g5 - add %%g5, %1, %%g7 - cas [%2], %%g5, %%g7 - sub %%g5, %%g7, %%g5 - brnz,pn %%g5, 1b - add %%g7, %1, %0" - : "=&r" (oldval) - : "HIr" (i), "r" (__atomic_fool_gcc(v)) - : "g5", "g7", "memory"); - return (int)oldval; -} - -extern __inline__ int atomic_sub_return(int i, atomic_t *v) -{ - unsigned long oldval; - __asm__ __volatile__(" -1: lduw [%2], %%g5 - sub %%g5, %1, %%g7 - cas [%2], %%g5, %%g7 - sub %%g5, %%g7, %%g5 - brnz,pn %%g5, 1b - sub %%g7, %1, %0" - : "=&r" (oldval) - : "HIr" (i), "r" (__atomic_fool_gcc(v)) - : "g5", "g7", "memory"); - return (int)oldval; -} +#define atomic_add_return(__i, __v) \ +({ register atomic_t *__V asm("g1"); \ + register int __I asm("g2"); \ + __V = (__v); __I = (__i); \ + __asm__ __volatile__("sethi %%hi(__atomic_add), %%g3\n\t" \ + "jmpl %%g3 + %%lo(__atomic_add), %%g3\n\t" \ + " nop\n1:" \ + : "=&r" (__I) \ + : "0" (__I), "r" (__V) \ + : "g3", "g5", "g7", "cc", "memory"); \ + __I; \ +}) + +#define atomic_sub_return(__i, __v) \ +({ register atomic_t *__V asm("g1"); \ + register int __I asm("g2"); \ + __V = (__v); __I = (__i); \ + __asm__ __volatile__("sethi %%hi(__atomic_sub), %%g3\n\t" \ + "jmpl %%g3 + %%lo(__atomic_sub), %%g3\n\t" \ + " nop\n1:" \ + : "=&r" (__I) \ + : "0" (__I), "r" (__V) \ + : "g3", "g5", "g7", "cc", "memory"); \ + __I; \ +}) + +#define atomic_add(i, v) atomic_add_return(i, v) +#define atomic_sub(i, v) atomic_sub_return(i, v) #define atomic_dec_return(v) atomic_sub_return(1,(v)) #define atomic_inc_return(v) atomic_add_return(1,(v)) |