support arm64 register dumps

[huaihuaiVV]

there is arm64 architecture from phone5s could you add to support show arm6 register ? Thanks

General Purpose Registers: x0 = 0x0000000000000000 x1 = 0x0000000007000806 x2 = 0x0000000000000000 x3 = 0x0000000000000c00 x4 = 0x0000000000001c03 x5 = 0x00000000ffffffff x6 = 0x0000000000000000 x7 = 0x00000001020fc68b "-[WCUploadMgr TryStartTask]" x8 = 0x00000000fffffbbf x9 = 0x0000000007000000 x10 = 0x0000000007000100 x11 = 0x00000000000021a8 x12 = 0x0000000000000000 x13 = 0x0000000000000000 x14 = 0x0000000000000000 x15 = 0x0000000000000000 x16 = 0xffffffffffffffe1 x17 = 0x00000001840717a4 CoreFoundation-[__NSArrayM count] x18 = 0x0000000000000000 x19 = 0x0000000000000000 x20 = 0x00000000ffffffff x21 = 0x0000000000001c03 x22 = 0x0000000000000c00 x23 = 0x000000016fd7ec58 x24 = 0x0000000007000806 x25 = 0x0000000000000000 x26 = 0x0000000007000806 x27 = 0x0000000010004004 x28 = 0x0000000000000001 fp = 0x000000016fd7eb50 lr = 0x0000000196908c88 libsystem_kernel.dylibmach_msg + 72 sp = 0x000000016fd7eb00 pc = 0x0000000196908e0c libsystem_kernel.dylib`mach_msg_trap + 8 cpsr = 0x60000000

[deroko]

Will add this asap, tnx for pointing it out.