Dev tools · September 30, 2025
JPDB, GDB for Your Waveforms
hey everyone, I've been working on JPDB is a GDB like debugger for waveforms. if you give JPDB a waveform* and some other information, then you can step through the program that was executed when that waveform was created. i say GDB-like because JPDB has it's own GDB client (its called shucks), that implements the client side logic of the GDB protocol faithfully, but doesnt have all of the GDB niceties (like python integration, etc). this allows the project to be specialized on debugging waveforms specifically, when compared to another approach like connecting to a gdb client JPDB integrates…
JPDB, GDB for Your Waveforms launched on September 30, 2025 with 33 votes, #488 of 8,160 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
JPDB is a debugger designed for analyzing waveforms generated during hardware design and simulation. Users can step through the program execution that created a waveform, similar to using GDB for software debugging. It includes Shucks, a specialized GDB-compatible client focused on waveform debugging rather than general-purpose development. JPDB integrates with the Surfer waveform viewer, allowing developers to examine signals alongside execution traces. The tool is aimed at hardware designers and CPU developers working with digital simulations and waveform data.
written from the facts on this page · September 2026
From the sources
Debug waveforms with GDB . Contribute to 1024bees/dang development by creating an account on GitHub.
JPDB is a GDB inspired debugger for debugging pre-silicon CPUs. you can step through code, add breakpoints, and look at waveform values as you do. pretty neat ! jpdb test_data/ibex/sim.fst --mapping-path test_data/ibex/signal_get.py --elf test_data/ibex/hello_test.elf requirements your system python must be 3.10 or newer, otherwise jpdb might bark at you and not work if you want to use any of the surfer features, you should have surfer installed and on $PATH. WCP support is required for surfer integration cargo install --git https://github.com/1024bees/dang jpdb the releases page on github The mapping file for JPDB is the translation layer that makes signals understandable for JPDB's…from github.com
In the maker’s words, at launch
hey everyone, I've been working on JPDB is a GDB like debugger for waveforms. if you give JPDB a waveform* and some other information, then you can step through the program that was executed when that waveform was created. i say GDB-like because JPDB has it's own GDB client (its called shucks), that implements the…
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