1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
#ifndef __ASM_CRIS_ARCH_SYSTEM_H
|
|
#define __ASM_CRIS_ARCH_SYSTEM_H
|
|
|
|
#include <linux/config.h>
|
|
|
|
/* read the CPU version register */
|
|
|
|
extern inline unsigned long rdvr(void) {
|
|
unsigned char vr;
|
|
__asm__ volatile ("move $vr,%0" : "=rm" (vr));
|
|
return vr;
|
|
}
|
|
|
|
/* read/write the user-mode stackpointer */
|
|
|
|
extern inline unsigned long rdusp(void) {
|
|
unsigned long usp;
|
|
__asm__ __volatile__("move $usp,%0" : "=rm" (usp));
|
|
return usp;
|
|
}
|
|
|
|
#define wrusp(usp) \
|
|
__asm__ __volatile__("move %0,$usp" : /* no outputs */ : "rm" (usp))
|
|
|
|
/* read the current stackpointer */
|
|
|
|
extern inline unsigned long rdsp(void) {
|
|
unsigned long sp;
|
|
__asm__ __volatile__("move.d $sp,%0" : "=rm" (sp));
|
|
return sp;
|
|
}
|
|
|
|
extern inline unsigned long _get_base(char * addr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define nop() __asm__ __volatile__ ("nop");
|
|
|
|
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
|
|
#define tas(ptr) (xchg((ptr),1))
|
|
|
|
struct __xchg_dummy { unsigned long a[100]; };
|
|
#define __xg(x) ((struct __xchg_dummy *)(x))
|
|
|
|
/* interrupt control.. */
|
|
#define local_save_flags(x) __asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory");
|
|
#define local_irq_restore(x) __asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory");
|
|
#define local_irq_disable() __asm__ __volatile__ ( "di" : : :"memory");
|
|
#define local_irq_enable() __asm__ __volatile__ ( "ei" : : :"memory");
|
|
|
|
#define irqs_disabled() \
|
|
({ \
|
|
unsigned long flags; \
|
|
local_save_flags(flags); \
|
|
!(flags & (1<<5)); \
|
|
})
|
|
|
|
/* For spinlocks etc */
|
|
#define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory");
|
|
|
|
#endif
|