2.1.1. Advanced SIMD and VFP feature identification registers

The Cortex-A9 NEON MPE implements the ARMv7 Advanced SIMD and VFP extensions.

Software can identify these extensions and the features they provide, using the feature identification registers. The extensions are in the coprocessor space for coprocessors CP10 and CP11. You can access the registers using the VMRS and VMSR instructions, for example:

VMRS <Rd>, FPSID ; Read Floating-Point System ID Register
VMRS <Rd>, MVFR1 ; Read Media and VFP Feature Register 1
VMSR FPSCR, <Rt> ; Write Floating-Point System Control Register

See Advanced SIMD and VFP register access for a description of the registers.

In addition there are coprocessor access control registers. See Non-secure Access Control Register and Coprocessor Access Control Register.

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