add arm64 support

- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests

executer/user/arch/arm64/include/arch-eclair.h

@@ -0,0 +1,24 @@
+/* arch-eclair.h COPYRIGHT FUJITSU LIMITED 2016 */
+#ifndef HEADER_USER_ARM64_ECLAIR_H
+#define HEADER_USER_ARM64_ECLAIR_H
+
+/* VA_BITS=48, 4K_PAGE address */
+#define MAP_KERNEL	0xffffffffff800000
+#define MAP_ST		0xffff800000000000
+#define MAP_KERNEL_TEXT	"0xffffffffff800000"
+
+#define ARCH_CLV_SPAN	"arm64_cpu_local_variables_span"
+
+#define ARCH	"aarch64"
+
+#define ARCH_REGS	34
+
+#define PANIC_REGS_OFFSET	144
+
+struct arch_kregs {
+	unsigned long x19, x20, x21, x22, x23;
+	unsigned long x24, x25, x26, x27, x28;
+	unsigned long fp, sp, pc;
+};
+
+#endif	/* HEADER_USER_ARM64_ECLAIR_H */