87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_ATOMIC_GRB_H
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#define __ASM_SH_ATOMIC_GRB_H
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#define ATOMIC_OP(op) \
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static inline void arch_atomic_##op(int i, atomic_t *v) \
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{ \
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int tmp; \
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\
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__asm__ __volatile__ ( \
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" .align 2 \n\t" \
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" mova 1f, r0 \n\t" /* r0 = end point */ \
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" mov r15, r1 \n\t" /* r1 = saved sp */ \
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" mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \
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" mov.l @%1, %0 \n\t" /* load old value */ \
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" " #op " %2, %0 \n\t" /* $op */ \
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" mov.l %0, @%1 \n\t" /* store new value */ \
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"1: mov r1, r15 \n\t" /* LOGOUT */ \
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: "=&r" (tmp), \
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"+r" (v) \
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: "r" (i) \
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: "memory" , "r0", "r1"); \
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} \
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#define ATOMIC_OP_RETURN(op) \
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static inline int arch_atomic_##op##_return(int i, atomic_t *v) \
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{ \
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int tmp; \
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\
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__asm__ __volatile__ ( \
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" .align 2 \n\t" \
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" mova 1f, r0 \n\t" /* r0 = end point */ \
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" mov r15, r1 \n\t" /* r1 = saved sp */ \
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" mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \
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" mov.l @%1, %0 \n\t" /* load old value */ \
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" " #op " %2, %0 \n\t" /* $op */ \
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" mov.l %0, @%1 \n\t" /* store new value */ \
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"1: mov r1, r15 \n\t" /* LOGOUT */ \
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: "=&r" (tmp), \
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"+r" (v) \
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: "r" (i) \
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: "memory" , "r0", "r1"); \
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\
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return tmp; \
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}
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#define ATOMIC_FETCH_OP(op) \
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static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \
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{ \
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int res, tmp; \
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\
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__asm__ __volatile__ ( \
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" .align 2 \n\t" \
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" mova 1f, r0 \n\t" /* r0 = end point */ \
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" mov r15, r1 \n\t" /* r1 = saved sp */ \
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" mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \
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" mov.l @%2, %0 \n\t" /* load old value */ \
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" mov %0, %1 \n\t" /* save old value */ \
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" " #op " %3, %0 \n\t" /* $op */ \
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" mov.l %0, @%2 \n\t" /* store new value */ \
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"1: mov r1, r15 \n\t" /* LOGOUT */ \
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: "=&r" (tmp), "=&r" (res), "+r" (v) \
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: "r" (i) \
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: "memory" , "r0", "r1"); \
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\
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return res; \
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}
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#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op)
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ATOMIC_OPS(add)
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ATOMIC_OPS(sub)
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#undef ATOMIC_OPS
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#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op)
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ATOMIC_OPS(and)
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ATOMIC_OPS(or)
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ATOMIC_OPS(xor)
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#undef ATOMIC_OPS
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#undef ATOMIC_FETCH_OP
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#undef ATOMIC_OP_RETURN
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#undef ATOMIC_OP
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#endif /* __ASM_SH_ATOMIC_GRB_H */
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