mirror of https://gitee.com/openkylin/linux.git
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
#ifndef _ASM_SCORE_SYSTEM_H
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#define _ASM_SCORE_SYSTEM_H
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#include <linux/types.h>
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#include <linux/irqflags.h>
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struct pt_regs;
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struct task_struct;
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extern void *resume(void *last, void *next, void *next_ti);
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#define switch_to(prev, next, last) \
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do { \
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(last) = resume(prev, next, task_thread_info(next)); \
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} while (0)
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#define finish_arch_switch(prev) do {} while (0)
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typedef void (*vi_handler_t)(void);
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extern unsigned long arch_align_stack(unsigned long sp);
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#define mb() barrier()
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#define rmb() barrier()
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#define wmb() barrier()
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#define smp_mb() barrier()
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#define smp_rmb() barrier()
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#define smp_wmb() barrier()
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#define read_barrier_depends() do {} while (0)
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#define smp_read_barrier_depends() do {} while (0)
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#define set_mb(var, value) do {var = value; wmb(); } while (0)
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#define __HAVE_ARCH_CMPXCHG 1
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#include <asm-generic/cmpxchg-local.h>
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#ifndef __ASSEMBLY__
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struct __xchg_dummy { unsigned long a[100]; };
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#define __xg(x) ((struct __xchg_dummy *)(x))
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static inline
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unsigned long __xchg(volatile unsigned long *m, unsigned long val)
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{
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unsigned long retval;
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unsigned long flags;
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local_irq_save(flags);
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retval = *m;
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*m = val;
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local_irq_restore(flags);
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return retval;
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}
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#define xchg(ptr, v) \
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((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \
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(unsigned long)(v)))
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static inline unsigned long __cmpxchg(volatile unsigned long *m,
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unsigned long old, unsigned long new)
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{
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unsigned long retval;
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unsigned long flags;
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local_irq_save(flags);
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retval = *m;
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if (retval == old)
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*m = new;
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local_irq_restore(flags);
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return retval;
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}
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#define cmpxchg(ptr, o, n) \
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((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \
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(unsigned long)(o), \
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(unsigned long)(n)))
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extern void __die(const char *, struct pt_regs *, const char *,
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const char *, unsigned long) __attribute__((noreturn));
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extern void __die_if_kernel(const char *, struct pt_regs *, const char *,
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const char *, unsigned long);
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#define die(msg, regs) \
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__die(msg, regs, __FILE__ ":", __func__, __LINE__)
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#define die_if_kernel(msg, regs) \
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__die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__)
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_SCORE_SYSTEM_H */
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