Changes

** [http://developer.arm.com ARM Developer Information Centre]*** [https://developer.arm.com/products/architecture/a-profile/docs/den0024/a ARM Cortex-A Series Programmer’s Guide for ARMv8-A]** The ''short'' guide to the ARMv8 instruction set: http[https://infocenterwww.armelement14.com/helpcommunity/index.jsp?topic=servlet/JiveServlet/previewBody/41836-102-1-229511/comARM.armReference_Manual.doc.den0024a/ch05s01.htmlpdf ARMv8 Instruction Set Overview] ("ARM ISA Overview")** Procedure Call ReferenceThe ''long'' guide to the ARMv8 instruction set: http[https://infocenterdeveloper.arm.com/helpdocs/ddi0487/latest/arm-architecture-reference-manual-armv8-for-armv8-a-architecture-profile ARM Architecture Reference Manual ARMv8, for ARMv8-A architecture profile] ("ARM ARM")** [https:/topic/comdeveloper.arm.doc.ihi0055bcom/docs/ihi0055/latest/IHI0055B_aapcs64.pdfprocedure-call-standard-for-the-arm-64-bit-architecture-aarch64 Procedure Call Standard for the ARM 64-bit Architecture (AArch64)]