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-rw-r--r--arch/alpha/include/asm/atomic.h65
1 files changed, 56 insertions, 9 deletions
diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
index 572b228c44c7..8243f17999e3 100644
--- a/arch/alpha/include/asm/atomic.h
+++ b/arch/alpha/include/asm/atomic.h
@@ -65,6 +65,25 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
return result; \
}
+#define ATOMIC_FETCH_OP(op, asm_op) \
+static inline int atomic_fetch_##op(int i, atomic_t *v) \
+{ \
+ long temp, result; \
+ smp_mb(); \
+ __asm__ __volatile__( \
+ "1: ldl_l %2,%1\n" \
+ " " #asm_op " %2,%3,%0\n" \
+ " stl_c %0,%1\n" \
+ " beq %0,2f\n" \
+ ".subsection 2\n" \
+ "2: br 1b\n" \
+ ".previous" \
+ :"=&r" (temp), "=m" (v->counter), "=&r" (result) \
+ :"Ir" (i), "m" (v->counter) : "memory"); \
+ smp_mb(); \
+ return result; \
+}
+
#define ATOMIC64_OP(op, asm_op) \
static __inline__ void atomic64_##op(long i, atomic64_t * v) \
{ \
@@ -101,11 +120,32 @@ static __inline__ long atomic64_##op##_return(long i, atomic64_t * v) \
return result; \
}
+#define ATOMIC64_FETCH_OP(op, asm_op) \
+static __inline__ long atomic64_fetch_##op(long i, atomic64_t * v) \
+{ \
+ long temp, result; \
+ smp_mb(); \
+ __asm__ __volatile__( \
+ "1: ldq_l %2,%1\n" \
+ " " #asm_op " %2,%3,%0\n" \
+ " stq_c %0,%1\n" \
+ " beq %0,2f\n" \
+ ".subsection 2\n" \
+ "2: br 1b\n" \
+ ".previous" \
+ :"=&r" (temp), "=m" (v->counter), "=&r" (result) \
+ :"Ir" (i), "m" (v->counter) : "memory"); \
+ smp_mb(); \
+ return result; \
+}
+
#define ATOMIC_OPS(op) \
ATOMIC_OP(op, op##l) \
ATOMIC_OP_RETURN(op, op##l) \
+ ATOMIC_FETCH_OP(op, op##l) \
ATOMIC64_OP(op, op##q) \
- ATOMIC64_OP_RETURN(op, op##q)
+ ATOMIC64_OP_RETURN(op, op##q) \
+ ATOMIC64_FETCH_OP(op, op##q)
ATOMIC_OPS(add)
ATOMIC_OPS(sub)
@@ -113,18 +153,25 @@ ATOMIC_OPS(sub)
#define atomic_andnot atomic_andnot
#define atomic64_andnot atomic64_andnot
-ATOMIC_OP(and, and)
-ATOMIC_OP(andnot, bic)
-ATOMIC_OP(or, bis)
-ATOMIC_OP(xor, xor)
-ATOMIC64_OP(and, and)
-ATOMIC64_OP(andnot, bic)
-ATOMIC64_OP(or, bis)
-ATOMIC64_OP(xor, xor)
+#define atomic_fetch_or atomic_fetch_or
+
+#undef ATOMIC_OPS
+#define ATOMIC_OPS(op, asm) \
+ ATOMIC_OP(op, asm) \
+ ATOMIC_FETCH_OP(op, asm) \
+ ATOMIC64_OP(op, asm) \
+ ATOMIC64_FETCH_OP(op, asm)
+
+ATOMIC_OPS(and, and)
+ATOMIC_OPS(andnot, bic)
+ATOMIC_OPS(or, bis)
+ATOMIC_OPS(xor, xor)
#undef ATOMIC_OPS
+#undef ATOMIC64_FETCH_OP
#undef ATOMIC64_OP_RETURN
#undef ATOMIC64_OP
+#undef ATOMIC_FETCH_OP
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP