ste StefanoBelli
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <setjmp.h> | |
| typedef unsigned long long __u64; | |
| #define get_rsp(into) \ | |
| __asm__ __volatile__("movq %%rsp, %0;" : "=m"(into) :: "memory") | |
| #ifndef PUSH_RET_ADDR |
StefanoBelli
/ dgcchk.py
Last active
January 30, 2022 19:39
Digital Green Certificate decoder and validator 4fun
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| #!/usr/bin/python | |
| # Stefano Belli | |
| # Digital Green Certificate decoder and validator 4fun | |
| # Changelog | |
| # * -- First change since publishing -- | |
| # - fix datetime.now offset-awareness | |
| # - fix incorrect vaccine data retrieved from DGC led to wrong test results | |
| # - fix incorrect comparison between dose number and scheduled total doses to check vaccination completeness |
StefanoBelli
/ install-latest-teams.sh
Created
March 12, 2020 08:42
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| #!/bin/bash | |
| DL="https://teams.microsoft.com/downloads/desktopurl?env=production&plat=linux&arch=x64&download=true&linuxArchiveType=deb" | |
| BUILDDIR=/tmp/teams-build | |
| PRIV="sudo" | |
| if ! which wget 2>/dev/null >>/dev/null; then | |
| echo "unable to find wget" | |
| exit 1 | |
| fi |
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| SHELL = /bin/bash | |
| CC = gcc | |
| OBJECT_FLAG = -c | |
| CFLAGS = -O2 -pedantic -std=c99 -Wall -Wextra -Wshadow -W | |
| LIBS = -lexample | |
| OBJS = example.o | |
| OUT = example | |
| SUPPRESS_OUTPUT = > /dev/null 2>&1 | |
| all:$(OBJS) |
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| // SANE API usage example | |
| // link against libsane | |
| // --> http://www.sane-project.org/html/doc012.html | |
| #include <sane/sane.h> | |
| #include <stdio.h> | |
| int main() { | |
| // | |
| // Initialize SANE | |
| // |
StefanoBelli
/ ClearConsole.c
Created
July 14, 2019 08:06
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| #include <Windows.h> | |
| void ClearConsole(HANDLE console) { | |
| const COORD origin = { 0,0 }; | |
| DWORD writtenBytes; | |
| DWORD consoleSize; | |
| CONSOLE_SCREEN_BUFFER_INFO info; | |
| GetConsoleScreenBufferInfo(console, &info); |
StefanoBelli
/ smalloc.S
Created
July 6, 2019 07:07
Simple libc-independent malloc implementation (originally written for sysh) (look at the comment section
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| # | |
| # smalloc.S | |
| # | |
| # Simple Malloc implementation for sysh, libc-independent | |
| # | |
| # IF ARCH IS x86_64 THEN | |
| # STRUCT (block_header) : { | |
| # DATA_SIZE off 0 | |
| # _FREE_BLK off 8 |
StefanoBelli
/ showstats.c
Last active
June 24, 2019 10:57
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| //gcc showstats.c -lwiringPi -lwiringPiDev | |
| #define ROWS 2 | |
| #define COLS 16 | |
| #define RS 1 | |
| #define EN 4 | |
| #define D7 7 | |
| #define D6 0 | |
| #define D5 2 | |
| #define D4 3 |
StefanoBelli
/ x86_fast_string.cpp
Last active
January 2, 2019 23:11
Using MSVC, Clang and GCC x86 intrinsics to use x86's SSE4.2 ISA to implement some string manip functions
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| // x86_fast_string.cpp | |
| #include <nmmintrin.h> | |
| #include <immintrin.h> | |
| #include <cstdint> | |
| #if defined(_MSC_VER) | |
| #define x86_fetch_eflags(mem_dst_32) \ | |
| __asm { \ | |
| __asm pushfd \ |
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| #ifndef NUMERIC_H | |
| #define NUMERIC_H | |
| #include <initializer_list> | |
| #include <type_traits> | |
| #include <sstream> | |
| #include <string> | |
| #include <exception> | |
| #include <vector> | |
| #include <array> |
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