1 files changed, 39 insertions, 0 deletions
diff --git a/src/vm/arm/memcpy.S b/src/vm/arm/memcpy.S
new file mode 100644
index 0000000000..b9788605f7
--- /dev/null
+++ b/src/vm/arm/memcpy.S
@@ -0,0 +1,39 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#include "unixasmmacros.inc"
+#include "asmconstants.h"
+
+.syntax unified
+.thumb
+
+//
+// void *memcpy(void *dst, const void *src, size_t length)
+//
+// Copy a block of memory in a forward direction.
+//
+
+    NESTED_ENTRY FCallMemcpy, _TEXT, NoHandler
+        cmp r2, #0
+        
+        beq LOCAL_LABEL(GC_POLL)
+
+        PROLOG_PUSH  "{r7, lr}"
+        PROLOG_STACK_SAVE r7
+        
+        ldr r3, [r0]
+        ldr r3, [r1]
+        
+        blx C_FUNC(memcpy)
+
+        EPILOG_POP   "{r7, pc}"
+
+LOCAL_LABEL(GC_POLL):
+        ldr r0, =g_TrapReturningThreads
+        ldr r0, [r0]
+        cmp r0, #0
+        it ne
+        bne C_FUNC(FCallMemCpy_GCPoll)
+        bx lr
+    NESTED_END_MARKED FCallMemcpy, _TEXT