Viewing file:  atomic-grb.h (2.6 KB) -rw-r--r--
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_ATOMIC_GRB_H
#define __ASM_SH_ATOMIC_GRB_H
#define ATOMIC_OP(op) \
static inline void atomic_##op(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 */ \
" " #op " %2, %0 \n\t" /* $op */ \
" 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"); \
} \
#define ATOMIC_OP_RETURN(op) \
static inline int atomic_##op##_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 */ \
" " #op " %2, %0 \n\t" /* $op */ \
" 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; \
}
#define ATOMIC_FETCH_OP(op) \
static inline int atomic_fetch_##op(int i, atomic_t *v) \
{ \
int res, 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 @%2, %0 \n\t" /* load old value */ \
" mov %0, %1 \n\t" /* save old value */ \
" " #op " %3, %0 \n\t" /* $op */ \
" mov.l %0, @%2 \n\t" /* store new value */ \
"1: mov r1, r15 \n\t" /* LOGOUT */ \
: "=&r" (tmp), "=&r" (res), "+r" (v) \
: "r" (i) \
: "memory" , "r0", "r1"); \
\
return res; \
}
#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op)
ATOMIC_OPS(add)
ATOMIC_OPS(sub)
#undef ATOMIC_OPS
#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op)
ATOMIC_OPS(and)
ATOMIC_OPS(or)
ATOMIC_OPS(xor)
#undef ATOMIC_OPS
#undef ATOMIC_FETCH_OP
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
#endif /* __ASM_SH_ATOMIC_GRB_H */
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