@@ -125,6 +125,9 @@ rte_mov256(uint8_t *dst, const uint8_t *src)
memcpy((dst), (src), (n)) : \
rte_memcpy_func((dst), (src), (n)); })
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static inline void *
rte_memcpy_func(void *dst, const void *src, size_t n)
{
@@ -290,6 +293,9 @@ rte_mov256(uint8_t *dst, const uint8_t *src)
memcpy(dst, src, 256);
}
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static inline void *
rte_memcpy(void *dst, const void *src, size_t n)
{
@@ -282,6 +282,9 @@ void rte_memcpy_ge64(uint8_t *dst, const uint8_t *src, size_t n)
}
#if RTE_CACHE_LINE_SIZE >= 128
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static __rte_always_inline
void *rte_memcpy(void *dst, const void *src, size_t n)
{
@@ -303,6 +306,9 @@ void *rte_memcpy(void *dst, const void *src, size_t n)
}
#else
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static __rte_always_inline
void *rte_memcpy(void *dst, const void *src, size_t n)
{
@@ -11,6 +11,8 @@
* Functions for vectorised implementation of memcpy().
*/
+#include <rte_common.h>
+
/**
* Copy 16 bytes from one location to another using optimised
* instructions. The locations should not overlap.
@@ -108,6 +110,9 @@ rte_mov256(uint8_t *dst, const uint8_t *src);
* @return
* Pointer to the destination data.
*/
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static void *
rte_memcpy(void *dst, const void *src, size_t n);
@@ -149,6 +149,32 @@ typedef uint16_t unaligned_uint16_t;
__attribute__((format(printf, format_index, first_arg)))
#endif
+/**
+ * Check pointer arguments at compile-time.
+ *
+ * @param ...
+ * Comma separated list of parameter indexes of pointer arguments.
+ */
+#define __rte_nonnull(...) \
+ __attribute__((nonnull(__VA_ARGS__)))
+
+/**
+ * Tells compiler about the access mode of a pointer argument.
+ *
+ * @param access_mode
+ * Access mode: read_only, read_write, write_only, or none.
+ * @param ref_index
+ * Parameter index of pointer argument.
+ * @param size_index (optional)
+ * Parameter index of size argument.
+ */
+#if defined(RTE_CC_IS_GNU) && (GCC_VERSION >= 100400)
+#define __rte_access(access_mode, ...) \
+ __attribute__((access(access_mode, __VA_ARGS__)))
+#else
+#define __rte_access(access_mode, ...)
+#endif
+
/**
* Tells compiler that the function returns a value that points to
* memory, where the size is given by the one or two arguments.
@@ -84,6 +84,9 @@ rte_mov256(uint8_t *dst, const uint8_t *src)
memcpy((dst), (src), (n)) : \
rte_memcpy_func((dst), (src), (n)); })
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static inline void *
rte_memcpy_func(void *dst, const void *src, size_t n)
{
@@ -42,6 +42,9 @@ extern "C" {
* @return
* Pointer to the destination data.
*/
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static __rte_always_inline void *
rte_memcpy(void *dst, const void *src, size_t n);
@@ -859,6 +862,9 @@ rte_memcpy_aligned(void *dst, const void *src, size_t n)
return ret;
}
+__rte_nonnull(1, 2)
+__rte_access(write_only, 1, 3)
+__rte_access(read_only, 2, 3)
static __rte_always_inline void *
rte_memcpy(void *dst, const void *src, size_t n)
{