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author | Paul Mundt <lethal@linux-sh.org> | 2008-07-29 08:09:44 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2008-07-29 08:09:44 +0900 |
commit | f15cbe6f1a4b4d9df59142fc8e4abb973302cf44 (patch) | |
tree | 774d7b11abaaf33561ab8268bf51ddd9ceb79025 /arch/sh/include/asm/atomic-grb.h | |
parent | 25326277d8d1393d1c66240e6255aca780f9e3eb (diff) | |
download | blackbird-op-linux-f15cbe6f1a4b4d9df59142fc8e4abb973302cf44.tar.gz blackbird-op-linux-f15cbe6f1a4b4d9df59142fc8e4abb973302cf44.zip |
sh: migrate to arch/sh/include/
This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac.
Most of the moving about was done with Sam's directions at:
http://marc.info/?l=linux-sh&m=121724823706062&w=2
with subsequent hacking and fixups entirely my fault.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/atomic-grb.h')
-rw-r--r-- | arch/sh/include/asm/atomic-grb.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/arch/sh/include/asm/atomic-grb.h b/arch/sh/include/asm/atomic-grb.h new file mode 100644 index 000000000000..4c5b7dbfcedb --- /dev/null +++ b/arch/sh/include/asm/atomic-grb.h @@ -0,0 +1,169 @@ +#ifndef __ASM_SH_ATOMIC_GRB_H +#define __ASM_SH_ATOMIC_GRB_H + +static inline void atomic_add(int i, atomic_t *v) +{ + int tmp; + + __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 */ + " add %2, %0 \n\t" /* add */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (i) + : "memory" , "r0", "r1"); +} + +static inline void atomic_sub(int i, atomic_t *v) +{ + int tmp; + + __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 */ + " sub %2, %0 \n\t" /* sub */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (i) + : "memory" , "r0", "r1"); +} + +static inline int atomic_add_return(int i, atomic_t *v) +{ + int tmp; + + __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 */ + " add %2, %0 \n\t" /* add */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (i) + : "memory" , "r0", "r1"); + + return tmp; +} + +static inline int atomic_sub_return(int i, atomic_t *v) +{ + int tmp; + + __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 */ + " sub %2, %0 \n\t" /* sub */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (i) + : "memory", "r0", "r1"); + + return tmp; +} + +static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +{ + int tmp; + unsigned int _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 #-6, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%1, %0 \n\t" /* load old value */ + " and %2, %0 \n\t" /* add */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (_mask) + : "memory" , "r0", "r1"); +} + +static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +{ + int tmp; + + __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" (v) + : "r" (mask) + : "memory" , "r0", "r1"); +} + +static inline int atomic_cmpxchg(atomic_t *v, int old, int new) +{ + int ret; + + __asm__ __volatile__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" + " nop \n\t" + " mov r15, r1 \n\t" + " mov #-8, r15 \n\t" + " mov.l @%1, %0 \n\t" + " cmp/eq %2, %0 \n\t" + " bf 1f \n\t" + " mov.l %3, @%1 \n\t" + "1: mov r1, r15 \n\t" + : "=&r" (ret) + : "r" (v), "r" (old), "r" (new) + : "memory" , "r0", "r1" , "t"); + + return ret; +} + +static inline int atomic_add_unless(atomic_t *v, int a, int u) +{ + int ret; + unsigned long tmp; + + __asm__ __volatile__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" + " nop \n\t" + " mov r15, r1 \n\t" + " mov #-12, r15 \n\t" + " mov.l @%2, %1 \n\t" + " mov %1, %0 \n\t" + " cmp/eq %4, %0 \n\t" + " bt/s 1f \n\t" + " add %3, %1 \n\t" + " mov.l %1, @%2 \n\t" + "1: mov r1, r15 \n\t" + : "=&r" (ret), "=&r" (tmp) + : "r" (v), "r" (a), "r" (u) + : "memory" , "r0", "r1" , "t"); + + return ret != u; +} +#endif /* __ASM_SH_ATOMIC_GRB_H */ |