mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 16:57:40 +07:00
c6470150df
Many of the atomic op implementations are the same except for one instruction; fold the lot into a few CPP macros and reduce LoC. This also prepares for easy addition of new ops. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-sh@vger.kernel.org Link: http://lkml.kernel.org/r/20140508135852.770036493@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
#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_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op)
|
|
|
|
ATOMIC_OPS(add)
|
|
ATOMIC_OPS(sub)
|
|
|
|
#undef ATOMIC_OPS
|
|
#undef ATOMIC_OP_RETURN
|
|
#undef ATOMIC_OP
|
|
|
|
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");
|
|
}
|
|
|
|
#endif /* __ASM_SH_ATOMIC_GRB_H */
|