Файловый менеджер

Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200/arch/csky/include/asm/atomic.h

Назад
/* SPDX-License-Identifier: GPL-2.0 / #ifndef __ASM_CSKY_ATOMIC_H #define __ASM_CSKY_ATOMIC_H #include <linux/version.h> #include <asm/cmpxchg.h> #include <asm/barrier.h> #ifdef CONFIG_CPU_HAS_LDSTEX #define __atomic_add_unless __atomic_add_unless static inline int __atomic_add_unless(atomic_t v, int a, int u) { unsigned long tmp, ret; smp_mb(); asm volatile ( "1: ldex.w %0, (%3) \n" " mov %1, %0 \n" " cmpne %0, %4 \n" " bf 2f \n" " add %0, %2 \n" " stex.w %0, (%3) \n" " bez %0, 1b \n" "2: \n" : "=&r" (tmp), "=&r" (ret) : "r" (a), "r"(&v->counter), "r"(u) : "memory"); if (ret != u) smp_mb(); return ret; } #define ATOMIC_OP(op, c_op) \ static inline void atomic_##op(int i, atomic_t v) \ { \ unsigned long tmp; \ \ asm volatile ( \ "1: ldex.w %0, (%2) \n" \ " " #op " %0, %1 \n" \ " stex.w %0, (%2) \n" \ " bez %0, 1b \n" \ : "=&r" (tmp) \ : "r" (i), "r"(&v->counter) \ : "memory"); \ } #define ATOMIC_OP_RETURN(op, c_op) \ static inline int atomic_##op##_return(int i, atomic_t v) \ { \ unsigned long tmp, ret; \ \ smp_mb(); \ asm volatile ( \ "1: ldex.w %0, (%3) \n" \ " " #op " %0, %2 \n" \ " mov %1, %0 \n" \ " stex.w %0, (%3) \n" \ " bez %0, 1b \n" \ : "=&r" (tmp), "=&r" (ret) \ : "r" (i), "r"(&v->counter) \ : "memory"); \ smp_mb(); \ \ return ret; \ } #define ATOMIC_FETCH_OP(op, c_op) \ static inline int atomic_fetch_##op(int i, atomic_t v) \ { \ unsigned long tmp, ret; \ \ smp_mb(); \ asm volatile ( \ "1: ldex.w %0, (%3) \n" \ " mov %1, %0 \n" \ " " #op " %0, %2 \n" \ " stex.w %0, (%3) \n" \ " bez %0, 1b \n" \ : "=&r" (tmp), "=&r" (ret) \ : "r" (i), "r"(&v->counter) \ : "memory"); \ smp_mb(); \ \ return ret; \ } #else / CONFIG_CPU_HAS_LDSTEX / #include <linux/irqflags.h> #define __atomic_add_unless __atomic_add_unless static inline int __atomic_add_unless(atomic_t v, int a, int u) { unsigned long tmp, ret, flags; raw_local_irq_save(flags); asm volatile ( " ldw %0, (%3) \n" " mov %1, %0 \n" " cmpne %0, %4 \n" " bf 2f \n" " add %0, %2 \n" " stw %0, (%3) \n" "2: \n" : "=&r" (tmp), "=&r" (ret) : "r" (a), "r"(&v->counter), "r"(u) : "memory"); raw_local_irq_restore(flags); return ret; } #define ATOMIC_OP(op, c_op) \ static inline void atomic_##op(int i, atomic_t v) \ { \ unsigned long tmp, flags; \ \ raw_local_irq_save(flags); \ \ asm volatile ( \ " ldw %0, (%2) \n" \ " " #op " %0, %1 \n" \ " stw %0, (%2) \n" \ : "=&r" (tmp) \ : "r" (i), "r"(&v->counter) \ : "memory"); \ \ raw_local_irq_restore(flags); \ } #define ATOMIC_OP_RETURN(op, c_op) \ static inline int atomic_##op##_return(int i, atomic_t v) \ { \ unsigned long tmp, ret, flags; \ \ raw_local_irq_save(flags); \ \ asm volatile ( \ " ldw %0, (%3) \n" \ " " #op " %0, %2 \n" \ " stw %0, (%3) \n" \ " mov %1, %0 \n" \ : "=&r" (tmp), "=&r" (ret) \ : "r" (i), "r"(&v->counter) \ : "memory"); \ \ raw_local_irq_restore(flags); \ \ return ret; \ } #define ATOMIC_FETCH_OP(op, c_op) \ static inline int atomic_fetch_##op(int i, atomic_t v) \ { \ unsigned long tmp, ret, flags; \ \ raw_local_irq_save(flags); \ \ asm volatile ( \ " ldw %0, (%3) \n" \ " mov %1, %0 \n" \ " " #op " %0, %2 \n" \ " stw %0, (%3) \n" \ : "=&r" (tmp), "=&r" (ret) \ : "r" (i), "r"(&v->counter) \ : "memory"); \ \ raw_local_irq_restore(flags); \ \ return ret; \ } #endif / CONFIG_CPU_HAS_LDSTEX / #define atomic_add_return atomic_add_return ATOMIC_OP_RETURN(add, +) #define atomic_sub_return atomic_sub_return ATOMIC_OP_RETURN(sub, -) #define atomic_fetch_add atomic_fetch_add ATOMIC_FETCH_OP(add, +) #define atomic_fetch_sub atomic_fetch_sub ATOMIC_FETCH_OP(sub, -) #define atomic_fetch_and atomic_fetch_and ATOMIC_FETCH_OP(and, &) #define atomic_fetch_or atomic_fetch_or ATOMIC_FETCH_OP(or, \|) #define atomic_fetch_xor atomic_fetch_xor ATOMIC_FETCH_OP(xor, ^) #define atomic_and atomic_and ATOMIC_OP(and, &) #define atomic_or atomic_or ATOMIC_OP(or, \|) #define atomic_xor atomic_xor ATOMIC_OP(xor, ^) #undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN #undef ATOMIC_OP #include <asm-generic/atomic.h> #endif / __ASM_CSKY_ATOMIC_H */

| ver. 1.4 | Github | . | PHP 7.4.3-4ubuntu2.24 | Генерация страницы: 0 | proxy | phpinfo | Настройка