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| author |   Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-07 09:55:03 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2008-08-07 09:55:03 +0100 |
| commit | 4fb8af10d0fd09372d52966b76922b9e82bbc950 (patch) | |
| tree | d240e4d40357583e3f3eb228dccf20122a5b31ed /arch/sh/include/asm/bitops-grb.h | |
| parent | [ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/include (diff) | |
| parent | kbuild: a better way to generate cscope database change (diff) | |
| download | linux-dev-4fb8af10d0fd09372d52966b76922b9e82bbc950.tar.xz linux-dev-4fb8af10d0fd09372d52966b76922b9e82bbc950.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
Diffstat (limited to 'arch/sh/include/asm/bitops-grb.h')
| -rw-r--r-- | arch/sh/include/asm/bitops-grb.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bitops-grb.h b/arch/sh/include/asm/bitops-grb.h new file mode 100644 index 000000000000..a5907b94395b --- /dev/null +++ b/arch/sh/include/asm/bitops-grb.h @@ -0,0 +1,169 @@ +#ifndef __ASM_SH_BITOPS_GRB_H +#define __ASM_SH_BITOPS_GRB_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__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%1, %0 \n\t" /* load old value */ + " or %2, %0 \n\t" /* or */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (a) + : "r" (mask) + : "memory" , "r0", "r1"); +} + +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__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%1, %0 \n\t" /* load old value */ + " and %2, %0 \n\t" /* and */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (a) + : "r" (mask) + : "memory" , "r0", "r1"); +} + +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__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%1, %0 \n\t" /* load old value */ + " xor %2, %0 \n\t" /* xor */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (a) + : "r" (mask) + : "memory" , "r0", "r1"); +} + +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__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-14, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%2, %0 \n\t" /* load old value */ + " mov %0, %1 \n\t" + " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ + " mov #-1, %1 \n\t" /* retvat = -1 */ + " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ + " or %3, %0 \n\t" + " mov.l %0, @%2 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "=&r" (retval), + "+r" (a) + : "r" (mask) + : "memory" , "r0", "r1" ,"t"); + + return retval; +} + +static inline int test_and_clear_bit(int nr, volatile void * addr) +{ + int mask, retval,not_mask; + volatile unsigned int *a = addr; + unsigned long tmp; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + + not_mask = ~mask; + + __asm__ __volatile__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-14, r15 \n\t" /* LOGIN */ + " mov.l @%2, %0 \n\t" /* load old value */ + " mov %0, %1 \n\t" /* %1 = *a */ + " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ + " mov #-1, %1 \n\t" /* retvat = -1 */ + " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ + " and %4, %0 \n\t" + " mov.l %0, @%2 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "=&r" (retval), + "+r" (a) + : "r" (mask), + "r" (not_mask) + : "memory" , "r0", "r1", "t"); + + return retval; +} + +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__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-14, r15 \n\t" /* LOGIN */ + " mov.l @%2, %0 \n\t" /* load old value */ + " mov %0, %1 \n\t" /* %1 = *a */ + " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ + " mov #-1, %1 \n\t" /* retvat = -1 */ + " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ + " xor %3, %0 \n\t" + " mov.l %0, @%2 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "=&r" (retval), + "+r" (a) + : "r" (mask) + : "memory" , "r0", "r1", "t"); + + return retval; +} +#endif /* __ASM_SH_BITOPS_GRB_H */ |