samhenrigold

#!/bin/bash

# MacBook Lid Angle Sensor Diagnostic Script
# This script helps identify the lid angle sensor on different MacBook models

echo "=============================================="
echo "MacBook Lid Angle Sensor Diagnostic Tool"
echo "=============================================="
echo ""

CharlieQiu2017

A Deep Dive into libgcc And libsupc++

According to the specifications of the C and the C++ programming languages, implementations of C and C++ can be classified into hosted ones and freestanding ones, depending on whether the implementation has access to functionalities that require operating system (OS) support, such as memory allocation and multi-threading. A hosted implementation has full access to these functionalities, and can provide the full range of features required by the language. A freestanding implementation, on the other hand, does not have access to any functionality that requires support from the execution environment. Such implementations are only required to provide a subset of the language features. Freestanding implementations are important when developing operating systems, the standard C library,

MaskRay

#!/usr/bin/env ruby
# This program downloads and builds several compression utilities, benchmarks their compression and decompression
# performance on a specific input file including memory consumption, and finally generates HTML charts.
require 'benchmark'
require 'digest'
require 'etc'
require 'fileutils'
require 'json'
require 'net/http'
require 'optparse'

Keksgesicht

// RUN: %llvmbuildpath/bin/clang --sysroot=%libcpath --target="riscv32-none-elf" -menable-experimental-extensions -mabi="ilp32" -march="rv32imxsimple0p1" -O3 -S -o - %s | FileCheck %s

// CHECK: main:
// CHECK-DAG: SIMPLE.mac      [[RD1:[as][0-9]+]], [[RS1:[as][0-9]+]], [[RS2:[as][0-9]+]]
// CHECK: call    printf

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

izabera

namerefs (introduced in bash 4.0) act as aliases for other variables

var=meow
declare -n ref=var

echo $ref  # prints meow

ref=moo
echo $var  # prints moo

whitequark

"%" means not tested by me personally.

Reference material

• syscall.sh: Linux ARMv7/AArch64/x86/x86_64 ABI and syscall tables
• %C8051F34x_Glitch: silicon glitching tutorial

Disassemblers and decompilers

• Binary Ninja: interactive native code disassembler, decompiler, and debugger
  • BinExport: companion tool for BinDiff
• when building, replace the BN SDK it downloads with a path to BN API library

ataradov

#!/usr/bin/env python3
# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) 2023, Alex Taradov <[email protected]>. All rights reserved.

#------------------------------------------------------------------------------
core_debug = {
  'name': 'CD',
  'description': 'Core Debug',
  'base': 0xe000edf0,
  'source': 'DDI0403D_arm_architecture_v7m_reference_manual.pdf',

ataradov

itm = {
  'name': 'ITM',
  'description': 'Instrumentation Trace Macrocell',
  'base': 0xe0000000,
  'source': '',
  'registers': [
    ('PORT', 0x000, 'RW', 'ITM Stimulus Port', (32, 4)),
    ('TER',  0xe00, 'RW', 'ITM Trace Enable Register'),
    ('TPR',  0xe40, 'RW', 'ITM Trace Privilege Register'),
    ('TCR',  0xe80, 'RW', 'ITM Trace Control Register', [

Marc-B-Reynolds

// compile with whatever then run PractRand:
//  ./test | RNG_test stdin64 -tlmin 256KB -tf 2 -tlmax 512GB -seed 0

//****************************************************************************
// verbatim from: https://prng.di.unimi.it/xoroshiro128plus.c

/*  Written in 2016-2018 by David Blackman and Sebastiano Vigna ([email protected])

To the extent possible under law, the author has dedicated all copyright
and related and neighboring rights to this software to the public domain

MangaD

📌 Stack Unwinding & Exception Propagation in C++

Disclaimer: ChatGPT generated document.

Stack unwinding is the process of cleaning up the stack when an exception is thrown. It involves destructing local variables and calling cleanup functions while propagating the exception up the call stack until a matching catch block is found.

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