genposix: use GCC provided atomic functions for this target.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

diff --git a/arch/genposix/defines/cpu_def.h b/arch/genposix/defines/cpu_def.h
index 75504513c146d98254b9af9f7425d0b385d7b6f8..38b3572510debb4e873f4a413736a7ee6b8b9e22 100644 (file)
--- a/arch/genposix/defines/cpu_def.h
+++ b/arch/genposix/defines/cpu_def.h
@@ -1,5 +1,5 @@
-#ifndef _ARM_CPU_DEF_H
-#define _ARM_CPU_DEF_H
+#ifndef _GENPOSIX_CPU_DEF_H
+#define _GENPOSIX_CPU_DEF_H
 
 #ifndef CODE
   #define CODE
@@ -13,21 +13,44 @@
   #define DATA
 #endif
 
-/*masked fields macros*/
+#define set_bit(nr,v)    (__sync_fetch_and_or(v,(1<<(nr))))
+#define clear_bit(nr,v)  (__sync_fetch_and_and(v,~(1<<(nr))))
+#define test_and_set_bit(nr,v) \
+  ({ typeof(*(v)) __bitmsk = 1<<(nr); \
+     __sync_fetch_and_or(v,__bitmsk)&__bitmsk?1:0; \
+  })
+
+#define atomic_clear_mask_b1(mask, v) __sync_fetch_and_and(v,~(mask))
+#define atomic_set_mask_b1(mask, v)   __sync_fetch_and_or(v,(mask))
+
+#define atomic_clear_mask_w1(mask, v) __sync_fetch_and_and(v,~(mask))
+#define atomic_set_mask_w1(mask, v)   __sync_fetch_and_or(v,(mask))
+
+#define atomic_clear_mask_w(mask, v)  __sync_fetch_and_and(v,~(mask))
+#define atomic_set_mask_w(mask, v)    __sync_fetch_and_or(v,(mask))
+
+#define atomic_clear_mask(mask, v)    __sync_fetch_and_and(v,~(mask))
+#define atomic_set_mask(mask, v)      __sync_fetch_and_or(v,(mask))
+
+/* Arithmetic functions */
+#define sat_add_slsl(__x,__y)                                   \
+        do {                                                    \
+                typeof(__x) tmp;                                \
+                tmp = (__x) + (__y);                            \
+                if ((__x) > 0 && (__y) > 0 && tmp < 0)          \
+                        tmp = +0x7fffffff;                      \
+                else if ((__x) < 0 && (__y) < 0 && tmp >= 0)    \
+                        tmp = -0x80000000;                      \
+                (__x) = tmp;                                    \
+        } while (0)
+
+#ifndef __memory_barrier
+#define __memory_barrier() \
+__asm__ __volatile__("": : : "memory")
+#endif
 
+/*masked fields macros*/
 #define __val2mfld(mask,val) (((mask)&~((mask)<<1))*(val)&(mask))
 #define __mfld2val(mask,val) (((val)&(mask))/((mask)&~((mask)<<1)))
 
-#endif /* _ARM_CPU_DEF_H */
-
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+#endif /* _GENPOSIX_CPU_DEF_H */