This repository contains a reference of Xtensa instruction set architecture (ISA) compiled by Espressif using various publicly available sources. The purpose of this reference is to provide enough information to compiler and tool developers about the following aspects of Xtensa:
The following aspects of Xtensa are out of scope of this document:
This repository is not an official reference of Xtensa documentation and is not endorsed by Cadence Design Systems.
This repository contains the source of Xtensa ISA documentation in LaTeX format.
You can download the document in PDF format here:
To build the document in PDF format locally, you can use the provided Docker image:
docker build -t texlive-latex-extra docker
docker run --rm -v $PWD:/build -w /build texlive-latex-extra ./build.sh
We welcome corrections and improvement suggestions submitted as Github Pull Requests or Issues.
When adding larger portions of content, please specify the source you have referred to when writing it.
Please note that Cadence is the copyright owner of the official Xtensa ISA Reference Manual. Contributions which contain portions of Xtensa ISA Reference Manual will not be accepted.
This project is provided under Creative Commons CC-BY-SA-3.0 license, found in LICENSE file.