1 files changed, 95 insertions, 0 deletions
diff --git a/platform/linux-generic/include/api/odp/hints.h b/platform/linux-generic/include/api/odp/hints.h
new file mode 100644
index 0000000..7f04886
--- /dev/null
+++ b/platform/linux-generic/include/api/odp/hints.h
@@ -0,0 +1,95 @@
+/* Copyright (c) 2013, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+
+
+/**
+ * @file
+ *
+ * ODP compiler hints
+ */
+
+#ifndef ODP_HINTS_H_
+#define ODP_HINTS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @addtogroup odp_compiler_optim
+ *  Macros that will give hints to the compiler.
+ *  @{
+ */
+
+#ifdef __GNUC__
+
+/** Define a weak symbol
+ * This is primarily useful in defining library functions that can be
+ * overridden in user code.
+ */
+#define ODP_WEAK_SYMBOL __attribute__((__weak__))
+
+/**
+ * Hot code section
+ */
+#define ODP_HOT_CODE    __attribute__((__hot__))
+
+/**
+ * Cold code section
+ */
+#define ODP_COLD_CODE   __attribute__((__cold__))
+
+/**
+ * Branch likely taken
+ */
+#define odp_likely(x)   __builtin_expect((x), 1)
+
+/**
+ * Branch unlikely taken
+ */
+#define odp_unlikely(x) __builtin_expect((x), 0)
+
+
+/*
+ * __builtin_prefetch (const void *addr, rw, locality)
+ *
+ * rw 0..1       (0: read, 1: write)
+ * locality 0..3 (0: dont leave to cache, 3: leave on all cache levels)
+ */
+
+/**
+ * Cache prefetch address
+ */
+#define odp_prefetch(x)         __builtin_prefetch((x), 0, 3)
+
+/**
+ * Cache prefetch address for storing
+ */
+#define odp_prefetch_store(x)   __builtin_prefetch((x), 1, 3)
+
+
+
+#else
+
+#define ODP_WEAK_SYMBOL
+#define ODP_HOT_CODE
+#define ODP_COLD_CODE
+#define odp_likely(x)
+#define odp_unlikely(x)
+#define odp_prefetch(x)
+#define odp_prefetch_store(x)
+
+#endif
+
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif