1 files changed, 73 insertions, 0 deletions
diff --git a/ports/sysdeps/arm/armv7/multiarch/memcpy.S b/ports/sysdeps/arm/armv7/multiarch/memcpy.S
new file mode 100644
index 0000000000..1b12465a8b
--- /dev/null
+++ b/ports/sysdeps/arm/armv7/multiarch/memcpy.S
@@ -0,0 +1,73 @@
+/* Multiple versions of memcpy
+   All versions must be listed in ifunc-impl-list.c.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Thumb requires excess IT instructions here.  */
+#define NO_THUMB
+#include <sysdep.h>
+#include <rtld-global-offsets.h>
+
+#if !defined NOT_IN_libc
+	.text
+ENTRY(memcpy)
+	.type	memcpy, %gnu_indirect_function
+#ifdef __SOFTFP__
+	ldr	r1, .Lmemcpy_arm
+	tst	r0, #HWCAP_ARM_VFP
+	ldrne	r1, .Lmemcpy_vfp
+#else
+	ldr	r1, .Lmemcpy_vfp
+#endif
+	tst	r0, #HWCAP_ARM_NEON
+	ldrne	r1, .Lmemcpy_neon
+1:
+	add	r0, r1, pc
+	DO_RET(lr)
+
+#ifdef __SOFTFP__
+.Lmemcpy_arm:
+	.long	C_SYMBOL_NAME(__memcpy_arm) - 1b - PC_OFS
+#endif
+.Lmemcpy_neon:
+	.long	C_SYMBOL_NAME(__memcpy_neon) - 1b - PC_OFS
+.Lmemcpy_vfp:
+	.long	C_SYMBOL_NAME(__memcpy_vfp) - 1b - PC_OFS
+
+END(memcpy)
+
+libc_hidden_builtin_def (memcpy)
+
+/* These versions of memcpy are defined not to clobber any VFP or NEON
+   registers so they must always call the ARM variant of the memcpy code.  */
+strong_alias (__memcpy_arm, __aeabi_memcpy)
+strong_alias (__memcpy_arm, __aeabi_memcpy4)
+strong_alias (__memcpy_arm, __aeabi_memcpy8)
+libc_hidden_def (__memcpy_arm)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+#undef weak_alias
+#define weak_alias(x, y)
+#undef libc_hidden_def
+#define libc_hidden_def(name)
+
+#define memcpy __memcpy_arm
+
+#endif
+
+#include "memcpy_impl.S"