add arm64 support

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

arch/arm64/kernel/include/elf.h

@@ -0,0 +1,28 @@
+/* elf.h COPYRIGHT FUJITSU LIMITED 2015-2017 */
+#ifndef __HEADER_ARM64_COMMON_ELF_H
+#define __HEADER_ARM64_COMMON_ELF_H
+
+#include <ihk/context.h>
+
+/* ELF target machines defined */
+#define EM_AARCH64	183
+
+/* ELF header defined */
+#define ELF_CLASS	ELFCLASS64
+#define ELF_DATA	ELFDATA2LSB
+#define ELF_OSABI	ELFOSABI_NONE
+#define ELF_ABIVERSION	El_ABIVERSION_NONE
+#define ELF_ARCH	EM_AARCH64
+
+#define ELF_NGREG64 (sizeof (struct user_pt_regs) / sizeof(elf_greg64_t))
+
+/* PTRACE_GETREGSET and PTRACE_SETREGSET requests. */
+#define NT_ARM_TLS		0x401	/* ARM TLS register */
+#define NT_ARM_HW_BREAK		0x402	/* ARM hardware breakpoint registers */
+#define NT_ARM_HW_WATCH		0x403	/* ARM hardware watchpoint registers */
+#define NT_ARM_SYSTEM_CALL	0x404	/* ARM system call number */
+#define NT_ARM_SVE		0x405	/* ARM Scalable Vector Extension registers */
+
+typedef elf_greg64_t elf_gregset64_t[ELF_NGREG64];
+
+#endif /* __HEADER_ARM64_COMMON_ELF_H */