1 files changed, 70 insertions, 0 deletions
diff --git a/lib/libc/powerpc64/string/bcopy_resolver.c b/lib/libc/powerpc64/string/bcopy_resolver.c
new file mode 100644
index 000000000000..c99c53b2f9b3
--- /dev/null
+++ b/lib/libc/powerpc64/string/bcopy_resolver.c
@@ -0,0 +1,70 @@
+/*-
+ * Copyright (c) 2018 Instituto de Pesquisas Eldorado
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <machine/cpu.h>
+#include <machine/ifunc.h>
+
+#define _CAT(a,b)	a##b
+#define CAT(a,b)	_CAT(a,b)
+#define CAT3(a,b,c)	CAT(CAT(a,b),c)
+
+#ifdef MEMCOPY
+#define FN_NAME		memcpy
+#define FN_RET		void *
+#define FN_PARAMS	(void *dst, const void *src, size_t len)
+
+#elif defined(MEMMOVE)
+#define FN_NAME		memmove
+#define FN_RET		void *
+#define FN_PARAMS	(void *dst, const void *src, size_t len)
+
+#else
+#define FN_NAME		bcopy
+#define FN_RET		void
+#define FN_PARAMS	(const void *src, void *dst, size_t len)
+#endif
+
+#define FN_NAME_NOVSX	CAT(__, FN_NAME)
+#define FN_NAME_VSX	CAT3(__, FN_NAME, _vsx)
+
+FN_RET FN_NAME_NOVSX FN_PARAMS;
+FN_RET FN_NAME_VSX FN_PARAMS;
+
+DEFINE_UIFUNC(, FN_RET, FN_NAME, FN_PARAMS)
+{
+	/* VSX instructions were added in POWER ISA 2.06,
+	 * however it requires data to be word-aligned.
+	 * Since POWER ISA 2.07B this is solved transparently
+	 * by the hardware
+	 */
+	if (cpu_features & PPC_FEATURE_HAS_VSX)
+		return (FN_NAME_VSX);
+	else
+		return (FN_NAME_NOVSX);
+}