Gregory Estrade

Coder, reverse-engineer, hardware hacker.

[Furrtek @furrtek]

(pinned tweet)
Silicon reverse-engineering infos, files and progress
https://t.co/Cfa9CDUizB

[Léαlinux 🐧 @lea_linux]

https://t.co/Qyn3h10WNu
So... Steve Jobs pendant ses réunions :

[Will Crichton @tonofcrates]

Love this figure from Google's "pipes for SQL" paper. Matching syntactic and semantic order is a great heuristic for a well-designed API.

[Tock @yvan_theriault]

Enfin les vacance ��

[ian @ Dangerous Prototypes @dangerousproto]

Mobile phone SIM cards and bank IC cards respond to an asynchronous Answer To Reset command over a half-duplex UART. Pump a continuous clock signal into the clock pin. Bring the reset pin low and then high. The ATR response comes out of the IO pin...

[Gregory Estrade @Torlus]

Deuxième talk sur le Change Data Capture par @ManfredMartin #ToulouseJUG #Lyra

[Gregory Estrade @Torlus]

Premier talk sur #OpenAPI dev-tools par @DamienGUERIN #ToulouseJUG #Lyra

[Gregory Estrade @Torlus]

C’est parti pour le #ToulouseJUG hébergé par #Lyra !

[Aurélie Vache 🥑🐳🦸‍♀️✏️ @aurelievache]

En 2019 je devenais speakeuse a @DevoxxFR pour la première fois avec un duo sur Docker, Kubernetes et Istio.

Cette année j'ai encore la chance de faire un duo et sur un sujet encore différent.

Ce n'est peut être rien pour vous mais pour moi ça veut dire beaucoup 😊

[Greg Linares (Laughing Mantis) @Laughing_Mantis]

One of my favorite things to do to online pedos in the 90s who were idling overnight in AOL or IRC chat rooms was to send them a message with the following text and watching them disconnect:

+++ATH0;ATDT^19004469090;\T0

IYKYK

[Arnaud Carré @leonard_coder]

I released my bitmap converter demo tool. One key feature is the brute force color quantization algorithm, running on GPU for speed. (used when color reduction is needed, or for Amiga HAM format)
https://t.co/1UDHtwz8AM

[J-F DEL NERO @jfdelnero]

HxC Floppy Emulator software v2.15.1.2 released !

Many improvements and fixes ! See the release notes :

https://t.co/CrWsdiPCVm

https://t.co/RS7jIGOAgu

#hxc2001 #hxcfloppyemulator

[J-F DEL NERO @jfdelnero]

Plus de 40 ans après sa fabrication, double résurrection du télétel de l'@assomo5 : Replacement des nappes internes, puis après une nouvelle panne, replacement d'un pont de diodes et d'un jeu de condensateurs chimiques. Il s'agit là de la machine démarrant l'aventure du Minitel.

[internet hall of fame @InternetH0F]

😳

[Abhinav Upadhyay @abhi9u]

Just announced LPython - a high performance compiler for Python with multiple backends.

LPython is a novel, fast, and retargetable Python compiler that can compile type-annotated Python code to optimized machine code. It offers several backends such as LLVM, C, C++, WASM, Julia, and x86. LPython features quick compilation and runtime performance, as demonstrated by the benchmarks in their blog.

LPython also offers Just-In-Time (JIT) compilation and seamless interoperability with CPython. It is designed to be compatible with existing Python libraries and tools. LPython is released as an alpha version, meaning that users may encounter bugs when using it.

One of the key features of LPython is its ability to generate optimized machine code from type-annotated Python code. It uses the Abstract Semantic Representation (ASR) shared with LFortran, which allows for independent optimizations at the ASR level. The goal of LPython is to produce a compiler that runs exceptionally fast and generates fast code.

LPython provides several backends, including LLVM, C, C++, and WASM. It uses a multi-phase compilation process, transforming input code into an Abstract Syntax Tree (AST), then into an Abstract Semantic Representation (ASR), which preserves all semantic information. The ASR undergoes several ASR-to-ASR passes, where abstract operations are transformed into concrete statements. Finally, the final ASR is sent to the selected backend to generate code.

LPython supports Ahead-of-Time (AoT) compilation, which allows users to compile their Python code to optimized machine code before execution. It also supports Just-In-Time (JIT) compilation, where functions can be decorated with @lpython to enable JIT compilation. Currently, only C backend is supported for JIT compilation, but support for LLVM and other backends is planned for the future.

LPython offers interoperability with CPython, allowing users to access any library implemented using CPython. This is achieved through the @pythoncall decorator, which allows calling functions in CPython libraries. Users can also access libraries like NumPy, TensorFlow, PyTorch, and Matplotlib using LPython.

The benchmarks provided in the blog demonstrate the performance of LPython in various scenarios. For example, LPython's JIT compilation is compared to Numba on tasks like summation of elements in an array, pointwise multiplication of arrays, insertion sort on lists, and the Dijkstra shortest-path algorithm. LPython shows competitive performance in all these scenarios.

LPython looks like a promising project to aid applications which require high performance, such as AI. Mojo is also adopting a similar approach, however they are not only building a compiled Python, but also extending it to offer systems programming constructs as first class features. It would be interesting to compare the two.

Here's the full blog post covering their alpha release: https://t.co/jdHHgnJ1dL

[Ivan at Wallarm / API security solution @d0znpp]

Just in case you missed this. This is probably the most critical API exploit this quarter.

ESPv2 allows malicious requests to bypass authentication if both conditions are true:
The requested HTTP method is not in the API service d…https://t.co/2Xt7tYKWzS https://t.co/bkNSjICTKf

[TETALAB @tetalab]

Ça commence demain !
Let's go !

[J-F DEL NERO @jfdelnero]

Preparing the next HxC Floppy Emulator Firmware for Gotek update -> Apple II support on the way !🙂

#hxc2001 #floppyemulator #gotek #appleii

[Gregory Estrade @Torlus]

@emceebois @Laxer3A @djhardrich @_atrac17 @AshEvans81 @whybrow_joel @MikeSimone3 @DerekFox8081 @MiSTerFPGABot @topapate No I’m not aware of them. And to be honest, I don’t plan to work again on this 10+ years project of mine. However if someone has a specific question, I’d be glad to answer.