Index: arch/mips/include/mm/vm.h
===================================================================
--- arch/mips/include/mm/vm.h	(revision 747a24766ac24c89277fbbdfc5405fddd6f60b3e)
+++ arch/mips/include/mm/vm.h	(revision dcbc8be75e5824d4f8c94163799daa1370fbaae0)
@@ -38,5 +38,5 @@
 
 #define UTEXT_ADDRESS_ARCH	0x00001000
-#define USTACK_ADDRESS_ARCH	0x7ffff000
+#define USTACK_ADDRESS_ARCH	(0x7fffffff-(PAGE_SIZE-1))
 #define UDATA_ADDRESS_ARCH	0x01001000
 
Index: arch/mips/src/asm.s
===================================================================
--- arch/mips/src/asm.s	(revision 747a24766ac24c89277fbbdfc5405fddd6f60b3e)
+++ arch/mips/src/asm.s	(revision dcbc8be75e5824d4f8c94163799daa1370fbaae0)
@@ -149,4 +149,9 @@
 	nop
 
+.global memcopy
+memcopy:
+	j _memcopy
+	nop
+
 # THIS IS USERSPACE CODE
 .global utext