baryluk

commit 3da240b059b1710b47d8774b27dc84bd05fb409c (HEAD -> master)
Author: Witold Baryluk <witold.baryluk@gmail.com>
Date:   Wed Nov 30 02:56:29 2022 +0100

    Demangle D programming language (dlang) symbol names

diff --git a/coregrind/m_demangle/demangle.c b/coregrind/m_demangle/demangle.c
index 3fd7cb75f..a4031dc8a 100644
--- a/coregrind/m_demangle/demangle.c
+++ b/coregrind/m_demangle/demangle.c

baryluk

#!/bin/bash

wget -c https://9front.org/iso/9front-9442.0e66f87316e571f7edf5274369ec69a5905507aa.amd64.iso.gz
gunzip -k 9front-9442.0e66f87316e571f7edf5274369ec69a5905507aa.amd64.iso.gz
if ! [ -f plan9.raw ]; then
  qemu-img create  plan9.raw 10G
fi
exec qemu-system-x86_64 -enable-kvm \
  -smp $(nproc) \
  -m $((8*1024)) \

baryluk

#!/usr/bin/env python3

# MIT License, Witold Baryluk, 2022

# double dabble algorithm for convering binary numbers to decimal notation.
# This is program is not for speed, but just for ilustration and education.
# It works, and could be starting point to trying to understand
# how it works, and implement it for example on a microcontroller without
# division.

baryluk

set firewall all-ping 'enable'
set firewall broadcast-ping 'disable'
set firewall config-trap 'disable'
set firewall group network-group inside-nets network '192.168.99.0/24'
set firewall group network-group inside-nets network '10.31.74.0/28'
set firewall ipv6-receive-redirects 'disable'
set firewall ipv6-src-route 'disable'
set firewall ip-src-route 'disable'
set firewall log-martians 'enable'
set firewall receive-redirects 'disable'

baryluk

#!/usr/bin/env python3

# Copyright: Witold Baryluk, 2019-2024. MIT license

# This small program takes one parameter, a binary (or library), and outputs
# a dependency graph. This is done recursively for all subdependencies.
# Some common dependencies are ignored like this ones to glibc basic libraries.
# The ones related to stdc++ / gcc are not ignored (otherwise the graph would be very dense).
#
# To generate and render dependency graph in one go, use something like this:

baryluk

def common_prefix(strings):
    def _iter():
        for z in zip(*strings):
            if z.count(z[0]) == len(z):  # check all elements in `z` are the same
                yield z[0]
            else:
                return

    return "".join(_iter())

baryluk

#!/bin/bash

# NOTE: Deprecated. Use https://gist.github.com/baryluk/09cbabb215351117b32aee994e5619a0 instead

# This small program takes one parameter, a binary (or library), and outputs
# a dependency graph. This is done recursively for all subdependencies.
# Some common dependencies are ignored like this ones to glibc basic libraries.
# The ones related to stdc++ / gcc are not ignored.
# After script is done execute this command to generate dependency graph:
#

baryluk

#!/bin/bash

set -e
set -x


# TODO(baryluk): Standard depencies required: cmake, ninja, repo, git, gcc/g++, wayland-client, libxcb, libxml2, python3, perl, llvm
# Optional: valgrind, go, ocaml.

# I think the llvm actually doesn't need to be installed, because it is a part of downloaded and patched repo.

baryluk

Just a quick test of squashfs compression ratio using different settings.

I am looking for relatively good and fast compression, that also is quick to decompress.
I don't care about ultimate end size exactly tho.

Input (a Debian testing live build with 6240 installed packages):

$ sudo du -bs ./chroot
26566785410	./chroot   # 26.6GB
$

baryluk

#!/bin/sh

# Comparing minimal practical (no assembler used, C library used) binaries
# for various languages and compilers.
# Mainly to test D programming language mode called betterC

time g++-10 -Os -g0 -fno-exceptions -fomit-frame-pointer miniCPP.cpp -o miniCPP_gcc
time gcc-10 -Os -g0 -fno-exceptions -fomit-frame-pointer miniC.c -o miniC_gcc
time clang++-10 -Os -g0 -fno-exceptions -fomit-frame-pointer miniCPP.cpp -o miniCPP_clang
time clang-10 -Os -g0 -fno-exceptions -fomit-frame-pointer miniC.c -o miniC_clang