diff options
Diffstat (limited to 'arch/sh/include/asm/atomic-llsc.h')
-rw-r--r-- | arch/sh/include/asm/atomic-llsc.h | 101 |
1 files changed, 41 insertions, 60 deletions
diff --git a/arch/sh/include/asm/atomic-llsc.h b/arch/sh/include/asm/atomic-llsc.h index 4b00b78..8575dccb 100644 --- a/arch/sh/include/asm/atomic-llsc.h +++ b/arch/sh/include/asm/atomic-llsc.h @@ -2,39 +2,6 @@ #define __ASM_SH_ATOMIC_LLSC_H /* - * To get proper branch prediction for the main line, we must branch - * forward to code at the end of this object's .text section, then - * branch back to restart the operation. - */ -static inline void atomic_add(int i, atomic_t *v) -{ - unsigned long tmp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_add \n" -" add %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" - : "=&z" (tmp) - : "r" (i), "r" (&v->counter) - : "t"); -} - -static inline void atomic_sub(int i, atomic_t *v) -{ - unsigned long tmp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_sub \n" -" sub %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" - : "=&z" (tmp) - : "r" (i), "r" (&v->counter) - : "t"); -} - -/* * SH-4A note: * * We basically get atomic_xxx_return() for free compared with @@ -42,39 +9,53 @@ static inline void atomic_sub(int i, atomic_t *v) * encoding, so the retval is automatically set without having to * do any special work. */ -static inline int atomic_add_return(int i, atomic_t *v) -{ - unsigned long temp; +/* + * To get proper branch prediction for the main line, we must branch + * forward to code at the end of this object's .text section, then + * branch back to restart the operation. + */ - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_add_return \n" -" add %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" -" synco \n" - : "=&z" (temp) - : "r" (i), "r" (&v->counter) - : "t"); +#define ATOMIC_OP(op) \ +static inline void atomic_##op(int i, atomic_t *v) \ +{ \ + unsigned long tmp; \ + \ + __asm__ __volatile__ ( \ +"1: movli.l @%2, %0 ! atomic_" #op "\n" \ +" " #op " %1, %0 \n" \ +" movco.l %0, @%2 \n" \ +" bf 1b \n" \ + : "=&z" (tmp) \ + : "r" (i), "r" (&v->counter) \ + : "t"); \ +} - return temp; +#define ATOMIC_OP_RETURN(op) \ +static inline int atomic_##op##_return(int i, atomic_t *v) \ +{ \ + unsigned long temp; \ + \ + __asm__ __volatile__ ( \ +"1: movli.l @%2, %0 ! atomic_" #op "_return \n" \ +" " #op " %1, %0 \n" \ +" movco.l %0, @%2 \n" \ +" bf 1b \n" \ +" synco \n" \ + : "=&z" (temp) \ + : "r" (i), "r" (&v->counter) \ + : "t"); \ + \ + return temp; \ } -static inline int atomic_sub_return(int i, atomic_t *v) -{ - unsigned long temp; +#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_sub_return \n" -" sub %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" -" synco \n" - : "=&z" (temp) - : "r" (i), "r" (&v->counter) - : "t"); +ATOMIC_OPS(add) +ATOMIC_OPS(sub) - return temp; -} +#undef ATOMIC_OPS +#undef ATOMIC_OP_RETURN +#undef ATOMIC_OP static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) { |