add arm64 support

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

executer/user/arch/arm64/arch-eclair.c

@@ -0,0 +1,51 @@
+/* arch-eclair.c COPYRIGHT FUJITSU LIMITED 2016 */
+#include <stdio.h>
+#include <eclair.h>
+#include <arch-eclair.h>
+
+int print_kregs(char *rbp, size_t rbp_size, const struct arch_kregs *kregs)
+{
+	int i, ret, total = 0;
+	const unsigned long *regs[] = {&kregs->x19, &kregs->x20, &kregs->x21,
+				       &kregs->x22, &kregs->x23, &kregs->x24,
+				       &kregs->x25, &kregs->x26, &kregs->x27,
+				       &kregs->x28};
+
+	for (i = 0; i < 18; i++)	/* x0-x18 */{
+		ret = snprintf(rbp, rbp_size, "xxxxxxxxxxxxxxxx");
+		if (ret < 0) {
+			return ret;
+		}
+		rbp += ret;
+		total += ret;
+		rbp_size -= ret;
+	}
+
+	for (i = 0; i < sizeof(regs)/sizeof(regs[0]); i++) {	/* x19-x28 */
+		ret = print_bin(rbp, rbp_size, (void *)regs[i], sizeof(*regs[0]));
+		if (ret < 0) {
+			return ret;
+		}
+		rbp += ret;
+		total += ret;
+		rbp_size -= ret;
+	}
+
+	for (i = 0; i < 2; i++) {	/* x29-x30 */
+		ret = snprintf(rbp, rbp_size, "xxxxxxxxxxxxxxxx");
+		if (ret < 0) {
+			return ret;
+		}
+		rbp += ret;
+		total += ret;
+		rbp_size -= ret;
+	}
+
+	ret += print_bin(rbp, rbp_size, (void *)&kregs->sp, sizeof(kregs->sp));
+	if (ret < 0) {
+		return ret;
+	}
+	total += ret;
+
+	return total;
+}