| commit | a050e8c6b0c7464ca0a06e9c2bfcf91eb88e20d1 | [log] [tgz] |
|---|---|---|
| author | Miguel Young de la Sota <mcyoung@google.com> | Tue Mar 15 15:33:50 2022 -0400 |
| committer | Miguel Young <mcyoung@google.com> | Thu Mar 17 18:13:37 2022 -0400 |
| tree | 959d95be2c36de19dc8526b8daf252becd0e96d5 | |
| parent | 364fbd3ba13993f8a7d712cb449bf77af0324342 [diff] |
[lib] Add our own implementations of low-level math polyfills This includes a 64-bit long division function, and local polyfills for popcount and bswap, which RISC-V does not always have instructions for. The former must be called via a special signature, since it's an expensive operation triggered by operator/ in C. The latter can be called via their libgcc names as usual, so those callsites do not need to be updated. Signed-off-by: Miguel Young de la Sota <mcyoung@google.com>
OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or “monorepo”, where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.
The project contains comprehensive documentation of all IPs and tools. You can access it online at docs.opentitan.org.
Have a look at CONTRIBUTING and our documentation on project organization and processes for guidelines on how to contribute code to this repository.
Unless otherwise noted, everything in this repository is covered by the Apache License, Version 2.0 (see LICENSE for full text).