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Disintegrate asm/system.h for Microblaze

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Disintegrate asm/system.h for Microblaze.  Not compiled.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: microblaze-uclinux@itee.uq.edu.au
This commit is contained in:
David Howells
2012-03-28 18:30:02 +01:00
parent 803f69144f
commit c40d04df15
17 changed files with 129 additions and 107 deletions
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40
arch/microblaze/include/asm/cmpxchg.h Normal file
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@@ -0,0 +1,40 @@
#ifndef _ASM_MICROBLAZE_CMPXCHG_H
#define _ASM_MICROBLAZE_CMPXCHG_H
void __bad_xchg(volatile void *ptr, int size);
static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
int size)
{
unsigned long ret;
unsigned long flags;
switch (size) {
case 1:
local_irq_save(flags);
ret = *(volatile unsigned char *)ptr;
*(volatile unsigned char *)ptr = x;
local_irq_restore(flags);
break;
case 4:
local_irq_save(flags);
ret = *(volatile unsigned long *)ptr;
*(volatile unsigned long *)ptr = x;
local_irq_restore(flags);
break;
default:
__bad_xchg(ptr, size), ret = 0;
break;
}
return ret;
}
#define xchg(ptr, x) \
((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
#include <asm-generic/cmpxchg.h>
#include <asm-generic/cmpxchg-local.h>
#endif /* _ASM_MICROBLAZE_CMPXCHG_H */