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public:99_annexes:annex-b-terms-and-definitions:a:aarch64 [2026/09/12 17:42] – removed - external edit (Unknown date) 127.0.0.1public:99_annexes:annex-b-terms-and-definitions:a:aarch64 [2026/09/12 17:43] (current) – ↷ Links adapted because of a move operation nick_dido
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 +====== AArch64 ======
  
 +[[public:99_annexes:annex-b-terms-and-definitions:start|Go up to Terms and Definitions]]
 +
 +===== Discussion =====
 +
 +AArch64 identifies the 64-bit execution state of the Arm architecture. It uses the A64 instruction set.
 +
 +Operating systems, package managers, container registries, build tools, virtualization platforms, and infrastructure providers commonly use the labels AArch64, aarch64, or arm64 for this architecture. A controlled architecture model should normalize these labels while preserving the source-specific label required by each implementation.
 +
 +AArch64 differs from the A32 and T32 execution states and does not apply to all Arm architectures or every Arm processor implementation.
 +
 +===== Definition =====
 +
 +*The 64-bit execution state of the Arm architecture that uses the A64 instruction set.*
 +
 +===== Source =====
 +
 +  * Arm, //Arm Architecture Reference Manual for A-profile Architecture//
 +  * Arm, //A64 Instruction Set Architecture//
 +  * [[public:99_annexes:annex-c-references:start|References]]
 +
 +===== Note =====
 +
 +The labels **AArch64**, **aarch64**, and **arm64** commonly refer to the same 64-bit processor architecture across different operating systems, tools, package repositories, and infrastructure providers.
 +
 +AArch64 identifies an architectural execution state. It does not identify a specific processor, processor manufacturer, Machine Image format, operating system, or infrastructure provider.
 +
 +===== Example =====
 +
 +A Crucible Image Requirement identifies `AArch64` as the normalized processor architecture while an Amazon Web Services provider mapping uses `arm64` and a Red Hat Enterprise Linux package repository uses `aarch64`.
 +
 +----
 +
 +<WRAP centeralign>
 +© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +</WRAP>