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authorChris Zankel <chris@zankel.net>2012-10-17 17:46:43 -0700
committerChris Zankel <chris@zankel.net>2012-11-03 12:57:45 -0700
commite2d6bec249613a744bf6e1dc4afce4328d7240c3 (patch)
treee5ea2d1d9173627311f35c64fe675e98bf8429c1 /libc/sysdeps/linux
parent29fb29d31913438a27f708231d11f7dac46d7910 (diff)
xtensa: add missing atomic intrinsics
Add more atomic intrinsics. These are mostly non 32-bit versions, which are not support by Xtensa. This file needs some more clean-up and consolidation. Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'libc/sysdeps/linux')
-rw-r--r--libc/sysdeps/linux/xtensa/bits/atomic.h66
1 files changed, 64 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/xtensa/bits/atomic.h b/libc/sysdeps/linux/xtensa/bits/atomic.h
index efec365f1..49163a20d 100644
--- a/libc/sysdeps/linux/xtensa/bits/atomic.h
+++ b/libc/sysdeps/linux/xtensa/bits/atomic.h
@@ -19,8 +19,37 @@
#ifndef _BITS_ATOMIC_H
#define _BITS_ATOMIC_H 1
-/* Xtensa has only a 32-bit form of a store-conditional instruction,
- so just stub out the rest. */
+#include <inttypes.h>
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef int64_t atomic64_t;
+typedef uint64_t uatomic64_t;
+typedef int_fast64_t atomic_fast64_t;
+typedef uint_fast64_t uatomic_fast64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+
+/* Xtensa has only a 32-bit form of a store-conditional instruction. */
+
+#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_8_rel(mem, newval, oldval) \
+ (abort (), 0)
+
+#define __arch_compare_and_exchange_bool_16_rel(mem, newval, oldval) \
+ (abort (), 0)
/* Atomically store NEWVAL in *MEM if *MEM is equal to OLDVAL.
Return the old *MEM value. */
@@ -167,5 +196,38 @@
__arch_atomic_decrement_if_positive_32(mem); \
})
+
+# define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \
+ (abort (), 0)
+
+# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
+ (abort (), (__typeof (*mem)) 0)
+
+# define __arch_compare_and_exchange_bool_64_rel(mem, newval, oldval) \
+ (abort (), 0)
+
+# define __arch_compare_and_exchange_val_64_rel(mem, newval, oldval) \
+ (abort (), (__typeof (*mem)) 0)
+
+# define __arch_atomic_exchange_64_acq(mem, value) \
+ ({ abort (); (*mem) = (value); })
+
+# define __arch_atomic_exchange_64_rel(mem, value) \
+ ({ abort (); (*mem) = (value); })
+
+# define __arch_atomic_exchange_and_add_64(mem, value) \
+ ({ abort (); (*mem) = (value); })
+
+# define __arch_atomic_increment_val_64(mem) \
+ ({ abort (); (*mem)++; })
+
+# define __arch_atomic_decrement_val_64(mem) \
+ ({ abort (); (*mem)--; })
+
+# define __arch_atomic_decrement_if_positive_64(mem) \
+ ({ abort (); (*mem)--; })
+
+
+
#endif /* _BITS_ATOMIC_H */