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Diffstat (limited to 'ANDROID_3.4.5/arch/s390/include/asm/atomic.h')
-rw-r--r--ANDROID_3.4.5/arch/s390/include/asm/atomic.h334
1 files changed, 0 insertions, 334 deletions
diff --git a/ANDROID_3.4.5/arch/s390/include/asm/atomic.h b/ANDROID_3.4.5/arch/s390/include/asm/atomic.h
deleted file mode 100644
index 748347ba..00000000
--- a/ANDROID_3.4.5/arch/s390/include/asm/atomic.h
+++ /dev/null
@@ -1,334 +0,0 @@
-#ifndef __ARCH_S390_ATOMIC__
-#define __ARCH_S390_ATOMIC__
-
-/*
- * Copyright 1999,2009 IBM Corp.
- * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
- * Denis Joseph Barrow,
- * Arnd Bergmann <arndb@de.ibm.com>,
- *
- * Atomic operations that C can't guarantee us.
- * Useful for resource counting etc.
- * s390 uses 'Compare And Swap' for atomicity in SMP environment.
- *
- */
-
-#include <linux/compiler.h>
-#include <linux/types.h>
-#include <asm/cmpxchg.h>
-
-#define ATOMIC_INIT(i) { (i) }
-
-#define __CS_LOOP(ptr, op_val, op_string) ({ \
- int old_val, new_val; \
- asm volatile( \
- " l %0,%2\n" \
- "0: lr %1,%0\n" \
- op_string " %1,%3\n" \
- " cs %0,%1,%2\n" \
- " jl 0b" \
- : "=&d" (old_val), "=&d" (new_val), \
- "=Q" (((atomic_t *)(ptr))->counter) \
- : "d" (op_val), "Q" (((atomic_t *)(ptr))->counter) \
- : "cc", "memory"); \
- new_val; \
-})
-
-static inline int atomic_read(const atomic_t *v)
-{
- int c;
-
- asm volatile(
- " l %0,%1\n"
- : "=d" (c) : "Q" (v->counter));
- return c;
-}
-
-static inline void atomic_set(atomic_t *v, int i)
-{
- asm volatile(
- " st %1,%0\n"
- : "=Q" (v->counter) : "d" (i));
-}
-
-static inline int atomic_add_return(int i, atomic_t *v)
-{
- return __CS_LOOP(v, i, "ar");
-}
-#define atomic_add(_i, _v) atomic_add_return(_i, _v)
-#define atomic_add_negative(_i, _v) (atomic_add_return(_i, _v) < 0)
-#define atomic_inc(_v) atomic_add_return(1, _v)
-#define atomic_inc_return(_v) atomic_add_return(1, _v)
-#define atomic_inc_and_test(_v) (atomic_add_return(1, _v) == 0)
-
-static inline int atomic_sub_return(int i, atomic_t *v)
-{
- return __CS_LOOP(v, i, "sr");
-}
-#define atomic_sub(_i, _v) atomic_sub_return(_i, _v)
-#define atomic_sub_and_test(_i, _v) (atomic_sub_return(_i, _v) == 0)
-#define atomic_dec(_v) atomic_sub_return(1, _v)
-#define atomic_dec_return(_v) atomic_sub_return(1, _v)
-#define atomic_dec_and_test(_v) (atomic_sub_return(1, _v) == 0)
-
-static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
-{
- __CS_LOOP(v, ~mask, "nr");
-}
-
-static inline void atomic_set_mask(unsigned long mask, atomic_t *v)
-{
- __CS_LOOP(v, mask, "or");
-}
-
-#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-
-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
-{
- asm volatile(
- " cs %0,%2,%1"
- : "+d" (old), "=Q" (v->counter)
- : "d" (new), "Q" (v->counter)
- : "cc", "memory");
- return old;
-}
-
-static inline int __atomic_add_unless(atomic_t *v, int a, int u)
-{
- int c, old;
- c = atomic_read(v);
- for (;;) {
- if (unlikely(c == u))
- break;
- old = atomic_cmpxchg(v, c, c + a);
- if (likely(old == c))
- break;
- c = old;
- }
- return c;
-}
-
-
-#undef __CS_LOOP
-
-#define ATOMIC64_INIT(i) { (i) }
-
-#ifdef CONFIG_64BIT
-
-#define __CSG_LOOP(ptr, op_val, op_string) ({ \
- long long old_val, new_val; \
- asm volatile( \
- " lg %0,%2\n" \
- "0: lgr %1,%0\n" \
- op_string " %1,%3\n" \
- " csg %0,%1,%2\n" \
- " jl 0b" \
- : "=&d" (old_val), "=&d" (new_val), \
- "=Q" (((atomic_t *)(ptr))->counter) \
- : "d" (op_val), "Q" (((atomic_t *)(ptr))->counter) \
- : "cc", "memory"); \
- new_val; \
-})
-
-static inline long long atomic64_read(const atomic64_t *v)
-{
- long long c;
-
- asm volatile(
- " lg %0,%1\n"
- : "=d" (c) : "Q" (v->counter));
- return c;
-}
-
-static inline void atomic64_set(atomic64_t *v, long long i)
-{
- asm volatile(
- " stg %1,%0\n"
- : "=Q" (v->counter) : "d" (i));
-}
-
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
-{
- return __CSG_LOOP(v, i, "agr");
-}
-
-static inline long long atomic64_sub_return(long long i, atomic64_t *v)
-{
- return __CSG_LOOP(v, i, "sgr");
-}
-
-static inline void atomic64_clear_mask(unsigned long mask, atomic64_t *v)
-{
- __CSG_LOOP(v, ~mask, "ngr");
-}
-
-static inline void atomic64_set_mask(unsigned long mask, atomic64_t *v)
-{
- __CSG_LOOP(v, mask, "ogr");
-}
-
-#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
-
-static inline long long atomic64_cmpxchg(atomic64_t *v,
- long long old, long long new)
-{
- asm volatile(
- " csg %0,%2,%1"
- : "+d" (old), "=Q" (v->counter)
- : "d" (new), "Q" (v->counter)
- : "cc", "memory");
- return old;
-}
-
-#undef __CSG_LOOP
-
-#else /* CONFIG_64BIT */
-
-typedef struct {
- long long counter;
-} atomic64_t;
-
-static inline long long atomic64_read(const atomic64_t *v)
-{
- register_pair rp;
-
- asm volatile(
- " lm %0,%N0,%1"
- : "=&d" (rp) : "Q" (v->counter) );
- return rp.pair;
-}
-
-static inline void atomic64_set(atomic64_t *v, long long i)
-{
- register_pair rp = {.pair = i};
-
- asm volatile(
- " stm %1,%N1,%0"
- : "=Q" (v->counter) : "d" (rp) );
-}
-
-static inline long long atomic64_xchg(atomic64_t *v, long long new)
-{
- register_pair rp_new = {.pair = new};
- register_pair rp_old;
-
- asm volatile(
- " lm %0,%N0,%1\n"
- "0: cds %0,%2,%1\n"
- " jl 0b\n"
- : "=&d" (rp_old), "=Q" (v->counter)
- : "d" (rp_new), "Q" (v->counter)
- : "cc");
- return rp_old.pair;
-}
-
-static inline long long atomic64_cmpxchg(atomic64_t *v,
- long long old, long long new)
-{
- register_pair rp_old = {.pair = old};
- register_pair rp_new = {.pair = new};
-
- asm volatile(
- " cds %0,%2,%1"
- : "+&d" (rp_old), "=Q" (v->counter)
- : "d" (rp_new), "Q" (v->counter)
- : "cc");
- return rp_old.pair;
-}
-
-
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
-{
- long long old, new;
-
- do {
- old = atomic64_read(v);
- new = old + i;
- } while (atomic64_cmpxchg(v, old, new) != old);
- return new;
-}
-
-static inline long long atomic64_sub_return(long long i, atomic64_t *v)
-{
- long long old, new;
-
- do {
- old = atomic64_read(v);
- new = old - i;
- } while (atomic64_cmpxchg(v, old, new) != old);
- return new;
-}
-
-static inline void atomic64_set_mask(unsigned long long mask, atomic64_t *v)
-{
- long long old, new;
-
- do {
- old = atomic64_read(v);
- new = old | mask;
- } while (atomic64_cmpxchg(v, old, new) != old);
-}
-
-static inline void atomic64_clear_mask(unsigned long long mask, atomic64_t *v)
-{
- long long old, new;
-
- do {
- old = atomic64_read(v);
- new = old & mask;
- } while (atomic64_cmpxchg(v, old, new) != old);
-}
-
-#endif /* CONFIG_64BIT */
-
-static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u)
-{
- long long c, old;
-
- c = atomic64_read(v);
- for (;;) {
- if (unlikely(c == u))
- break;
- old = atomic64_cmpxchg(v, c, c + a);
- if (likely(old == c))
- break;
- c = old;
- }
- return c != u;
-}
-
-static inline long long atomic64_dec_if_positive(atomic64_t *v)
-{
- long long c, old, dec;
-
- c = atomic64_read(v);
- for (;;) {
- dec = c - 1;
- if (unlikely(dec < 0))
- break;
- old = atomic64_cmpxchg((v), c, dec);
- if (likely(old == c))
- break;
- c = old;
- }
- return dec;
-}
-
-#define atomic64_add(_i, _v) atomic64_add_return(_i, _v)
-#define atomic64_add_negative(_i, _v) (atomic64_add_return(_i, _v) < 0)
-#define atomic64_inc(_v) atomic64_add_return(1, _v)
-#define atomic64_inc_return(_v) atomic64_add_return(1, _v)
-#define atomic64_inc_and_test(_v) (atomic64_add_return(1, _v) == 0)
-#define atomic64_sub(_i, _v) atomic64_sub_return(_i, _v)
-#define atomic64_sub_and_test(_i, _v) (atomic64_sub_return(_i, _v) == 0)
-#define atomic64_dec(_v) atomic64_sub_return(1, _v)
-#define atomic64_dec_return(_v) atomic64_sub_return(1, _v)
-#define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0)
-#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
-
-#define smp_mb__before_atomic_dec() smp_mb()
-#define smp_mb__after_atomic_dec() smp_mb()
-#define smp_mb__before_atomic_inc() smp_mb()
-#define smp_mb__after_atomic_inc() smp_mb()
-
-#endif /* __ARCH_S390_ATOMIC__ */
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