From f15cbe6f1a4b4d9df59142fc8e4abb973302cf44 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 29 Jul 2008 08:09:44 +0900 Subject: 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 Signed-off-by: Paul Mundt --- arch/sh/include/asm/atomic-grb.h | 169 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 arch/sh/include/asm/atomic-grb.h (limited to 'arch/sh/include/asm/atomic-grb.h') 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 */ -- cgit v1.2.1