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Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/include/asm-xeno/atomic.h')
-rw-r--r--xenolinux-2.4.21-pre4-sparse/include/asm-xeno/atomic.h204
1 files changed, 0 insertions, 204 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/atomic.h b/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/atomic.h
deleted file mode 100644
index b356b37394..0000000000
--- a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/atomic.h
+++ /dev/null
@@ -1,204 +0,0 @@
-#ifndef __ARCH_I386_ATOMIC__
-#define __ARCH_I386_ATOMIC__
-
-#include <linux/config.h>
-
-/*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- */
-
-#ifdef CONFIG_SMP
-#define LOCK "lock ; "
-#else
-#define LOCK ""
-#endif
-
-/*
- * Make sure gcc doesn't try to be clever and move things around
- * on us. We need to use _exactly_ the address the user gave us,
- * not some alias that contains the same information.
- */
-typedef struct { volatile int counter; } atomic_t;
-
-#define ATOMIC_INIT(i) { (i) }
-
-/**
- * atomic_read - read atomic variable
- * @v: pointer of type atomic_t
- *
- * Atomically reads the value of @v. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-#define atomic_read(v) ((v)->counter)
-
-/**
- * atomic_set - set atomic variable
- * @v: pointer of type atomic_t
- * @i: required value
- *
- * Atomically sets the value of @v to @i. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-#define atomic_set(v,i) (((v)->counter) = (i))
-
-/**
- * atomic_add - add integer to atomic variable
- * @i: integer value to add
- * @v: pointer of type atomic_t
- *
- * Atomically adds @i to @v. Note that the guaranteed useful range
- * of an atomic_t is only 24 bits.
- */
-static __inline__ void atomic_add(int i, atomic_t *v)
-{
- __asm__ __volatile__(
- LOCK "addl %1,%0"
- :"=m" (v->counter)
- :"ir" (i), "m" (v->counter));
-}
-
-/**
- * atomic_sub - subtract the atomic variable
- * @i: integer value to subtract
- * @v: pointer of type atomic_t
- *
- * Atomically subtracts @i from @v. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ void atomic_sub(int i, atomic_t *v)
-{
- __asm__ __volatile__(
- LOCK "subl %1,%0"
- :"=m" (v->counter)
- :"ir" (i), "m" (v->counter));
-}
-
-/**
- * atomic_sub_and_test - subtract value from variable and test result
- * @i: integer value to subtract
- * @v: pointer of type atomic_t
- *
- * Atomically subtracts @i from @v and returns
- * true if the result is zero, or false for all
- * other cases. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ int atomic_sub_and_test(int i, atomic_t *v)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK "subl %2,%0; sete %1"
- :"=m" (v->counter), "=qm" (c)
- :"ir" (i), "m" (v->counter) : "memory");
- return c;
-}
-
-/**
- * atomic_inc - increment atomic variable
- * @v: pointer of type atomic_t
- *
- * Atomically increments @v by 1. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ void atomic_inc(atomic_t *v)
-{
- __asm__ __volatile__(
- LOCK "incl %0"
- :"=m" (v->counter)
- :"m" (v->counter));
-}
-
-/**
- * atomic_dec - decrement atomic variable
- * @v: pointer of type atomic_t
- *
- * Atomically decrements @v by 1. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ void atomic_dec(atomic_t *v)
-{
- __asm__ __volatile__(
- LOCK "decl %0"
- :"=m" (v->counter)
- :"m" (v->counter));
-}
-
-/**
- * atomic_dec_and_test - decrement and test
- * @v: pointer of type atomic_t
- *
- * Atomically decrements @v by 1 and
- * returns true if the result is 0, or false for all other
- * cases. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ int atomic_dec_and_test(atomic_t *v)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK "decl %0; sete %1"
- :"=m" (v->counter), "=qm" (c)
- :"m" (v->counter) : "memory");
- return c != 0;
-}
-
-/**
- * atomic_inc_and_test - increment and test
- * @v: pointer of type atomic_t
- *
- * Atomically increments @v by 1
- * and returns true if the result is zero, or false for all
- * other cases. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ int atomic_inc_and_test(atomic_t *v)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK "incl %0; sete %1"
- :"=m" (v->counter), "=qm" (c)
- :"m" (v->counter) : "memory");
- return c != 0;
-}
-
-/**
- * atomic_add_negative - add and test if negative
- * @v: pointer of type atomic_t
- * @i: integer value to add
- *
- * Atomically adds @i to @v and returns true
- * if the result is negative, or false when
- * result is greater than or equal to zero. Note that the guaranteed
- * useful range of an atomic_t is only 24 bits.
- */
-static __inline__ int atomic_add_negative(int i, atomic_t *v)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK "addl %2,%0; sets %1"
- :"=m" (v->counter), "=qm" (c)
- :"ir" (i), "m" (v->counter) : "memory");
- return c;
-}
-
-/* These are x86-specific, used by some header files */
-#define atomic_clear_mask(mask, addr) \
-__asm__ __volatile__(LOCK "andl %0,%1" \
-: : "r" (~(mask)),"m" (*addr) : "memory")
-
-#define atomic_set_mask(mask, addr) \
-__asm__ __volatile__(LOCK "orl %0,%1" \
-: : "r" (mask),"m" (*addr) : "memory")
-
-/* Atomic operations are already serializing on x86 */
-#define smp_mb__before_atomic_dec() barrier()
-#define smp_mb__after_atomic_dec() barrier()
-#define smp_mb__before_atomic_inc() barrier()
-#define smp_mb__after_atomic_inc() barrier()
-
-#endif