diff options
| -rw-r--r-- | arch/sh/include/asm/bitops-llsc.h | 144 | ||||
| -rw-r--r-- | arch/sh/include/asm/bitops.h | 2 |
2 files changed, 146 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bitops-llsc.h b/arch/sh/include/asm/bitops-llsc.h new file mode 100644 index 00000000000..43b8e1a8239 --- /dev/null +++ b/arch/sh/include/asm/bitops-llsc.h @@ -0,0 +1,144 @@ +#ifndef __ASM_SH_BITOPS_LLSC_H +#define __ASM_SH_BITOPS_LLSC_H + +static inline void set_bit(int nr, volatile void * addr) +{ + int mask; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + __asm__ __volatile__ ( + "1: \n\t" + "movli.l @%1, %0 ! set_bit \n\t" + "or %3, %0 \n\t" + "movco.l %0, @%1 \n\t" + "bf 1b \n\t" + : "=&z" (tmp), "=r" (a) + : "1" (a), "r" (mask) + : "t", "memory" + ); +} + +static inline void clear_bit(int nr, volatile void * addr) +{ + int mask; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + __asm__ __volatile__ ( + "1: \n\t" + "movli.l @%1, %0 ! clear_bit \n\t" + "and %3, %0 \n\t" + "movco.l %0, @%1 \n\t" + "bf 1b \n\t" + : "=&z" (tmp), "=r" (a) + : "1" (a), "r" (~mask) + : "t", "memory" + ); +} + +static inline void change_bit(int nr, volatile void * addr) +{ + int mask; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + __asm__ __volatile__ ( + "1: \n\t" + "movli.l @%1, %0 ! change_bit \n\t" + "xor %3, %0 \n\t" + "movco.l %0, @%1 \n\t" + "bf 1b \n\t" + : "=&z" (tmp), "=r" (a) + : "1" (a), "r" (mask) + : "t", "memory" + ); +} + +static inline int test_and_set_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + __asm__ __volatile__ ( + "1: \n\t" + "movli.l @%1, %0 ! test_and_set_bit \n\t" + "mov %0, %2 \n\t" + "or %4, %0 \n\t" + "movco.l %0, @%1 \n\t" + "bf 1b \n\t" + "and %4, %2 \n\t" + : "=&z" (tmp), "=r" (a), "=&r" (retval) + : "1" (a), "r" (mask) + : "t", "memory" + ); + + return retval != 0; +} + +static inline int test_and_clear_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + __asm__ __volatile__ ( + "1: \n\t" + "movli.l @%1, %0 ! test_and_clear_bit \n\t" + "mov %0, %2 \n\t" + "and %5, %0 \n\t" + "movco.l %0, @%1 \n\t" + "bf 1b \n\t" + "and %4, %2 \n\t" + "synco \n\t" + : "=&z" (tmp), "=r" (a), "=&r" (retval) + : "1" (a), "r" (mask), "r" (~mask) + : "t", "memory" + ); + + return retval != 0; +} + +static inline int test_and_change_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + __asm__ __volatile__ ( + "1: \n\t" + "movli.l @%1, %0 ! test_and_change_bit \n\t" + "mov %0, %2 \n\t" + "xor %4, %0 \n\t" + "movco.l %0, @%1 \n\t" + "bf 1b \n\t" + "and %4, %2 \n\t" + "synco \n\t" + : "=&z" (tmp), "=r" (a), "=&r" (retval) + : "1" (a), "r" (mask) + : "t", "memory" + ); + + return retval != 0; +} + +#endif /* __ASM_SH_BITOPS_LLSC_H */ diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h index d7d382f63ee..367930d8e5a 100644 --- a/arch/sh/include/asm/bitops.h +++ b/arch/sh/include/asm/bitops.h @@ -13,6 +13,8 @@ #ifdef CONFIG_GUSA_RB #include <asm/bitops-grb.h> +#elif defined(CONFIG_CPU_SH4A) +#include <asm/bitops-llsc.h> #else #include <asm/bitops-irq.h> #endif |