7etsuo

┌──────────────────────────────────────────────────────────────────────────────────────────────────────────┬──────────────────────────────────────────────────────────────────────────
│  printf Format Specifiers                                                                                │                                                                          
│  ┌──────────┬──────────────────────────────────────────────────┬───────────────────────────────────────┐ │/** printf format specifiers                                              
│  │ Specifier│Description                                       │ Example Output                        │ │ *    ███        ▄████████     ███        ▄████████ ███    █▄   ▄██████▄  
│  ├──────────┼──────────────────────────────────────────────────┼───────────────────────────────────────┤ │ *▀█████████▄   ███    ███ ▀█████████▄   ███    ███ ███    ███ ███    ███ 
│  │ %d       │Signed decimal integer                            │ printf("%d", 42); // 42               │ │ 

aamir-sultan

#!/usr/bin/env bash 

set -o errexit

declare -A version

version[m4]=1.4.19
version[bison]=3.8.2
version[ncurses]=6.4
version[musl]=1.2.4

tniessen

X-CUBE-CRYPTOLIB (CMOX) and the STM32's CRC unit

This write-up is about the STM32 cryptographic firmware library X-CUBE-CRYPTOLIB, also known as the Cortex-M Optimized Crypto Stack (CMOX). It is a cryptographic library developed by STMicroelectronics (ST) for their series of STM32 processors, which are based on the ARM Cortex-M family.

Hardware features vary across different STM32 processors. Because CRC checksums are widely used in embedded systems, most (if not all) STM32 processors feature a hardware CRC unit that is supposed to accelerate CRC computations.

Introduction

Interestingly, on the page "Getting started with the Cryptographic Library", ST claims:

stkptr

Developing Android apps without Android Studio (Debian 12)

If you're looking to develop an Android app you might be led to Android Studio. It's the IDE recommended and developed by Google for the express purpose of Android development. It does what it needs to, but if you look at the system requirements you will see some alarming numbers. If you're using an older system, or simply don't want to use AndroidStudio, this is the guide for you.

Installing packages

We won't be using many apt packages due to permissions issues and incompatible versions. That being said:

$ sudo apt install openjdk-17-jdk sdkmanager kotlin

pagkly

# Waydroid
# WSl custom kernel
# https://gist.github.com/oleksis/eb6d2f1cd2a6946faefb139aa0e38c35
# https://github.com/waydroid/waydroid/issues/217
# https://www.youtube.com/watch?v=SfK4PBcFq0w
# Powershell shutdown & remove config
wsl --shutdown
rm /mnt/c/Users/user/.wslconfig

# install dependencies

MaskRay

In the kernel source directory, run

make O=/tmp/linux/arm64 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j60 defconfig all

Then create an Alpine aarch64 image following https://hackmd.io/@starnight/Run_Alpine_on_QEMU_aarch64_Virtual_Machine

wget https://dl-cdn.alpinelinux.org/alpine/latest-stable/releases/aarch64/netboot/vmlinuz-lts https://dl-cdn.alpinelinux.org/alpine/latest-stable/releases/aarch64/netboot/config-lts

suiluj

import logging
import time
from pprint import pformat
# pretty print logs: https://stackoverflow.com/a/11093247/5628238
# pformat indent: https://stackoverflow.com/a/29469358/5628238
# (even needed when using %s string format): do not evaluate complex pformat when log level not printed: https://docs.python.org/3/library/logging.html#logging.Logger.isEnabledFor
# (wrong: complex variable string takes time nevertheless): https://reinout.vanrees.org/weblog/2015/06/05/logging-formatting.html
# https://stackoverflow.com/questions/13131400/logging-variable-data-with-new-format-string

# main script or module

xiaozhuai

#include <tinyformat.h>
#include <unwind.h>
#include <cxxabi.h>
#include <dlfcn.h>

struct android_backtrace_state {
    void **current;
    void **end;
};

jimblandy

# Put this in a file BLAH/dump-type.py and then put this in your ~/.gdbinit file
# (or type it at the GDB prompt):
#
# source BLAH/dump-type.py
#
# Then you can say:
#
#     (gdb) help jimb-dump-type
#
# and you should get a help message.

jjvillavicencio

cd /home/<user>/
sudo apt-get install unzip
wget https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip
unzip sdk-tools-linux-4333796.zip -d Android
rm sdk-tools-linux-4333796.zip
sudo apt-get install -y lib32z1 openjdk-8-jdk
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$PATH:$JAVA_HOME/bin
printf "\n\nexport JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64\nexport PATH=\$PATH:\$JAVA_HOME/bin" >> ~/.bashrc
cd Android/tools/bin