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-rw-r--r--arch/powerpc/atomic.h126
1 files changed, 0 insertions, 126 deletions
diff --git a/arch/powerpc/atomic.h b/arch/powerpc/atomic.h
deleted file mode 100644
index f706543a..00000000
--- a/arch/powerpc/atomic.h
+++ /dev/null
@@ -1,126 +0,0 @@
-#ifndef _INTERNAL_ATOMIC_H
-#define _INTERNAL_ATOMIC_H
-
-#include <stdint.h>
-#include <endian.h>
-
-static inline int a_ctz_l(unsigned long x)
-{
- static const char debruijn32[32] = {
- 0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
- 31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
- };
- return debruijn32[(x&-x)*0x076be629 >> 27];
-}
-
-static inline int a_ctz_64(uint64_t x)
-{
- uint32_t y = x;
- if (!y) {
- y = x>>32;
- return 32 + a_ctz_l(y);
- }
- return a_ctz_l(y);
-}
-
-static inline int a_cas(volatile int *p, int t, int s)
-{
- __asm__("\n"
- " sync\n"
- "1: lwarx %0, 0, %4\n"
- " cmpw %0, %2\n"
- " bne 1f\n"
- " stwcx. %3, 0, %4\n"
- " bne- 1b\n"
- " isync\n"
- "1: \n"
- : "=&r"(t), "+m"(*p) : "r"(t), "r"(s), "r"(p) : "cc", "memory" );
- return t;
-}
-
-static inline void *a_cas_p(volatile void *p, void *t, void *s)
-{
- return (void *)a_cas(p, (int)t, (int)s);
-}
-
-static inline int a_swap(volatile int *x, int v)
-{
- int old;
- do old = *x;
- while (a_cas(x, old, v) != old);
- return old;
-}
-
-static inline int a_fetch_add(volatile int *x, int v)
-{
- int old;
- do old = *x;
- while (a_cas(x, old, old+v) != old);
- return old;
-}
-
-static inline void a_inc(volatile int *x)
-{
- a_fetch_add(x, 1);
-}
-
-static inline void a_dec(volatile int *x)
-{
- a_fetch_add(x, -1);
-}
-
-static inline void a_store(volatile int *p, int x)
-{
- __asm__ __volatile__ ("\n"
- " sync\n"
- " stw %1, %0\n"
- " isync\n"
- : "=m"(*p) : "r"(x) : "memory" );
-}
-
-#define a_spin a_barrier
-
-static inline void a_barrier()
-{
- a_cas(&(int){0}, 0, 0);
-}
-
-static inline void a_crash()
-{
- *(volatile char *)0=0;
-}
-
-static inline void a_and(volatile int *p, int v)
-{
- int old;
- do old = *p;
- while (a_cas(p, old, old&v) != old);
-}
-
-static inline void a_or(volatile int *p, int v)
-{
- int old;
- do old = *p;
- while (a_cas(p, old, old|v) != old);
-}
-
-static inline void a_or_l(volatile void *p, long v)
-{
- a_or(p, v);
-}
-
-static inline void a_and_64(volatile uint64_t *p, uint64_t v)
-{
- union { uint64_t v; uint32_t r[2]; } u = { v };
- a_and((int *)p, u.r[0]);
- a_and((int *)p+1, u.r[1]);
-}
-
-static inline void a_or_64(volatile uint64_t *p, uint64_t v)
-{
- union { uint64_t v; uint32_t r[2]; } u = { v };
- a_or((int *)p, u.r[0]);
- a_or((int *)p+1, u.r[1]);
-}
-
-#endif