Without this replacement header, building netdev-dpdk.c provokes several
"sparse" warnings:
/usr/include/dpdk/rte_memcpy.h:515:33: warning: incorrect type in argument 1
(different type sizes)
/usr/include/dpdk/rte_memcpy.h:515:33: expected long long const [usertype]
*__P
/usr/include/dpdk/rte_memcpy.h:515:33: got int const [usertype] *<noident>
/usr/lib/gcc/i686-linux-gnu/6//include/emmintrin.h:698:20: error: undefined
identifier '__builtin_ia32_loaddqu'
/usr/lib/gcc/i686-linux-gnu/6//include/emmintrin.h:698:11: error: cast from
unknown type
/usr/lib/gcc/i686-linux-gnu/6//include/emmintrin.h:716:3: error: undefined
identifier '__builtin_ia32_storedqu'
/usr/lib/gcc/i686-linux-gnu/6//include/emmintrin.h:698:43: error: not a
function <noident>
/usr/lib/gcc/i686-linux-gnu/6//include/emmintrin.h:716:27: error: not a
function <noident>
...
Signed-off-by: Ben Pfaff <b...@ovn.org>
---
include/sparse/automake.mk | 1 +
include/sparse/rte_memcpy.h | 39 +++++++++++++++++++++++++++++++++++++++
2 files changed, 40 insertions(+)
create mode 100644 include/sparse/rte_memcpy.h
diff --git a/include/sparse/automake.mk b/include/sparse/automake.mk
index 0456ee67d481..f3282c260414 100644
--- a/include/sparse/automake.mk
+++ b/include/sparse/automake.mk
@@ -10,6 +10,7 @@ noinst_HEADERS += \
include/sparse/pthread.h \
include/sparse/rte_atomic.h \
include/sparse/rte_lcore.h \
+ include/sparse/rte_memcpy.h \
include/sparse/rte_vect.h \
include/sparse/sys/socket.h \
include/sparse/sys/wait.h
diff --git a/include/sparse/rte_memcpy.h b/include/sparse/rte_memcpy.h
new file mode 100644
index 000000000000..5cd3f013ea8b
--- /dev/null
+++ b/include/sparse/rte_memcpy.h
@@ -0,0 +1,39 @@
+/* Copyright (c) 2017 Nicira, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RTE_MEMCPY_H
+#define RTE_MEMCPY_H 1
+
+#ifndef __CHECKER__
+#error "Use this header only with sparse. It is not a correct implementation."
+#endif
+
+/* Include the same headers as the real rte_memcpy(). */
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <rte_vect.h>
+
+/* Declare the same functions as the real rte_memcpy.h, without defining them.
+ * This gives sparse the information it needs without provoking sparse's
+ * complaints about the implementations. */
+void rte_mov16(uint8_t *, const uint8_t *);
+void rte_mov32(uint8_t *, const uint8_t *);
+void rte_mov64(uint8_t *, const uint8_t *);
+void rte_mov128(uint8_t *, const uint8_t *);
+void rte_mov256(uint8_t *, const uint8_t *);
+void *rte_memcpy(void *, const void *, size_t);
+
+#endif /* RTE_MEMCPY_H_WRAPPER */
--
2.10.2
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