63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
#ifndef __ASM_CRIS_ARCH_SYSTEM_H
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#define __ASM_CRIS_ARCH_SYSTEM_H
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/* read the CPU version register */
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static inline unsigned long rdvr(void) {
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unsigned char vr;
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__asm__ volatile ("move $vr,%0" : "=rm" (vr));
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return vr;
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}
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#define cris_machine_name "cris"
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/* read/write the user-mode stackpointer */
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static inline unsigned long rdusp(void) {
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unsigned long usp;
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__asm__ __volatile__("move $usp,%0" : "=rm" (usp));
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return usp;
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}
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#define wrusp(usp) \
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__asm__ __volatile__("move %0,$usp" : /* no outputs */ : "rm" (usp))
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/* read the current stackpointer */
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static inline unsigned long rdsp(void) {
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unsigned long sp;
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__asm__ __volatile__("move.d $sp,%0" : "=rm" (sp));
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return sp;
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}
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static inline unsigned long _get_base(char * addr)
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{
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return 0;
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}
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#define nop() __asm__ __volatile__ ("nop");
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#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
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#define tas(ptr) (xchg((ptr),1))
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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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/* interrupt control.. */
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#define local_save_flags(x) __asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory");
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#define local_irq_restore(x) __asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory");
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#define local_irq_disable() __asm__ __volatile__ ( "di" : : :"memory");
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#define local_irq_enable() __asm__ __volatile__ ( "ei" : : :"memory");
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#define irqs_disabled() \
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({ \
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unsigned long flags; \
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local_save_flags(flags); \
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!(flags & (1<<5)); \
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})
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/* For spinlocks etc */
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#define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory");
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#endif
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