X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Fhelper.h;h=9873feadd85b020556c1cd1e4f45925094b1fdd1;hb=ab12eb57cf3fdd2c25df16a3d1e770a2642b93e8;hp=b9448e3324febca1f1923b6ef01c53532529d36c;hpb=415dfaf718b209207bf492a5f9afa571f76d789c;p=lttng-ust.git

diff --git a/include/helper.h b/include/helper.h
index b9448e33..9873fead 100644
--- a/include/helper.h
+++ b/include/helper.h
@@ -41,4 +41,18 @@ void *zmalloc(size_t len)
 		__min1 <= __min2 ? __min1: __min2;	\
 	})
 
+#define LTTNG_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+/*
+ * Use of __builtin_return_address(0) sometimes seems to cause stack
+ * corruption on 32-bit PowerPC. Disable this feature on that
+ * architecture for now by always using the NULL value for the ip
+ * context.
+ */
+#if defined(__PPC__) && !defined(__PPC64__)
+#define LTTNG_UST_CALLER_IP()		NULL
+#else /* #if defined(__PPC__) && !defined(__PPC64__) */
+#define LTTNG_UST_CALLER_IP()		__builtin_return_address(0)
+#endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */
+
 #endif /* _LTTNG_UST_HELPER_H */