layout: documentation title: “ARM implementation” doc: gem5 documentation parent: architecture_support permalink: /documentation/general_docs/architecture_support/arm_implementation/

ARM Implementation

Supported features and modes

The ARM Architecture models within gem5 support an ARMv8.0-A profile of the ARM® architecture with multi-processor extensions. This includes both AArch32 and AArch64 state at all ELs. This basically means supporting:

The baseline model is ARMv8.0 compliant, we also support some mandatory/optional ARMv8.x features (with x > 0) While the best way to get a synced version of Arm architectural features is to have a look at Arm ID registers:

Here you will find a summary of some (but not all) notable`architectural extensions supported in gem5:

  • ARMv8.1-LSE, Armv8.1 Large System Extensions
  • ARMv8.1-PAN, Privileged access never
  • ARMv8.2-SVE, Scalable Vector Extension
  • ARMv8.3-JSConv, Javascript conversion instructions
  • ARMv8.3-PAuth, Pointer Authentication