add arm64 support

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

executer/user/arch/x86_64/include/arch-eclair.h

@@ -0,0 +1,24 @@
+/* arch-eclair.h COPYRIGHT FUJITSU LIMITED 2016 */
+#ifndef HEADER_USER_X86_ECLAIR_H
+#define HEADER_USER_X86_ECLAIR_H
+
+#define MAP_KERNEL	0xFFFFFFFF80000000
+#define MAP_ST		0xFFFF800000000000
+
+#define ARCH_CLV_SPAN	"x86_cpu_local_variables_span"
+
+#define ARCH	"i386:x86-64"
+
+#define ARCH_REGS	21
+
+#define PANIC_REGS_OFFSET	240
+
+#define MAP_KERNEL_TEXT	"0xffffffff80001000"
+
+struct arch_kregs {
+	uintptr_t rsp, rbp, rbx, rsi;
+	uintptr_t rdi, r12, r13, r14;
+	uintptr_t r15, rflags, rsp0;
+};
+
+#endif	/* HEADER_USER_x86_ECLAIR_H */