Hexagon CPU architecture support

QEMU’s TCG emulation includes support for v65, v66, v67, v68, v69, v71, v73, v75, v77, v79, v81, v83, v85. It also has support for the following architecture extensions:

• HVX (Hexagon Vector eXtensions)

• HVX floating point.

• HLX (see the HLX reference manual).

User-DMA and HMX are not yet implemented.

Machine configurations also select the available HVX contexts, VTCM, and HMX/HLX resources. See Hexagon machines for the machine configurations.

For information on the specifics of the HVX extension, please refer to the Qualcomm Hexagon V79 HVX Programmer’s Reference Manual.

Emulation limits

The system models target functional execution.

HVX uses 128-byte vectors; 64-byte mode is not implemented.

See Hexagon System Architecture and Hexagon L2 Vectored Interrupt Controller for system-register, TLB, and interrupt details relevant to OS and firmware authors.