https://github.com/fruffy/p4dummy

A simple dummy extension for P4C.
https://github.com/fruffy/p4dummy

p4 p4c p4lang

Last synced: about 2 months ago
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A simple dummy extension for P4C.

• Host: GitHub
• URL: https://github.com/fruffy/p4dummy
• Owner: fruffy
• License: apache-2.0
• Created: 2023-07-07T20:43:43.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2024-10-06T16:20:03.000Z (3 months ago)
• Last Synced: 2024-10-12T04:29:12.302Z (2 months ago)
• Topics: p4, p4c, p4lang
• Language: C++
• Homepage:
• Size: 11.7 KB
• Stars: 6
• Watchers: 1
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# p4dummy

P4Dummy showcases how a compiler back end can be written for the official P4 compiler ([P4C](https://github.com/p4lang/p4c)). P4Dummy shows how to integrate with P4C's visitor library, parser, and front end. It does nothing but apply a series of compiler passes and echo the final version of the program.

## Requirements

P4Dummy is written as an extension to [P4C](https://github.com/p4lang/p4c). It has no other dependencies. P4C extensions are symlinked into the `extensions` folder of P4C and are automatically picked up once CMake is run. An example workflow could be:

```

cd p4c/

mkdir extensions

cd extensions

git clone https://github.com/fruffy/p4dummy

cd p4c/build

cmake ..

make

```

This assumes that P4C is setup correctly Instructions can be found [here](https://github.com/p4lang/p4c#dependencies).

Afterwards, the `p4dummy` executable can be found in the `p4c/build`folder.

## Usage

Executing P4Dummy will echo P4 programs in various stages of compilation (e.g., before/after the front or mid end):

    ./build/p4dummy example.p4

P4Dummy also has a mode where it does not require a particular input program and instead just echoes an internally defined program. You can toggle this mode with:

    ./build/p4dummy --use-fixed

## TODO

- Also build P4Dummy using Bazel