Add missing libc/machine/arm/aeabi_memcpy.c file

1 files changed, 64 insertions, 0 deletions

diff --git a/newlib/libc/machine/arm/aeabi_memcpy.c b/newlib/libc/machine/arm/aeabi_memcpy.c
new file mode 100644
index 000000000..9837c35fe
--- /dev/null
+++ b/newlib/libc/machine/arm/aeabi_memcpy.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2014 ARM Ltd
+ * 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. The name of the company may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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 <stddef.h>
+#include <_ansi.h>
+
+/* According to the Run-time ABI for the ARM Architecture.  This
+   function is allowed to corrupt only the integer core register
+   permitted to be corrupted by the [AAPCS] (r0-r3, ip, lr, and
+   CPSR).
+
+   The FP registers are used in memcpy for target __ARM_ARCH_7A.
+   Therefore, we can't just simply use alias to support the function
+   aeabi_memcpy for target __ARM_ARCH_7A.  Instead, we choose the
+   previous versions of memcpy to suppport it as an alternative.  */
+
+/* NOTE: This ifdef MUST match the one in aeabi_memcpy-armv7a.S.  */
+#if defined (__ARM_ARCH_7A__) && defined (__ARM_FEATURE_UNALIGNED) && \
+	(defined (__ARM_NEON__) || !defined (__SOFTFP__))
+
+/* Defined in aeabi_memcpy-armv7a.S.  */
+
+#else
+/* Support the alias for the __aeabi_memcpy which may
+   assume memory alignment.  */
+void __aeabi_memcpy4 (void *dest, const void *source, size_t n)
+	_ATTRIBUTE ((alias ("__aeabi_memcpy")));
+
+void __aeabi_memcpy8 (void *dest, const void *source, size_t n)
+	_ATTRIBUTE ((alias ("__aeabi_memcpy")));
+
+/* Support the routine __aeabi_memcpy.  Can't alias to memcpy
+   because it's not defined in the same translation unit.  */
+void __aeabi_memcpy (void *dest, const void *source, size_t n)
+{
+  extern void memcpy (void *dest, const void *source, size_t n);
+  memcpy (dest, source, n);
+}
+#endif