lancejpollard

/* Include the sbrk function */
#include <unistd.h>

int has_initialized = 0;
void *managed_memory_start;
void *last_valid_address;

void malloc_init() { /* grab the last valid address from the OS*/
  last_valid_address = sbrk(0);
  /* we don't have any memory to manage yet, so

lancejpollard

#include <arpa/inet.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>

int main() {
	const char* server_name = "localhost";
	const int server_port = 8877;

lancejpollard

/* chacha20 - 256 bits */

// Written in 2014 by Devi Mandiri. Public domain.
//
// Implementation derived from chacha-ref.c version 20080118
// See for details: http://cr.yp.to/chacha/chacha-20080128.pdf

function U8TO32_LE(x, i) {
  return x[i] | (x[i+1]<<8) | (x[i+2]<<16) | (x[i+3]<<24);
}

lancejpollard

        page    ,132
        title   memcpy - Copy source memory bytes to destination
;***
;memcpy.asm - contains memcpy and memmove routines
;
;       Copyright (c) Microsoft Corporation. All rights reserved.
;
;Purpose:
;       memcpy() copies a source memory buffer to a destination buffer.
;       Overlapping buffers are not treated specially, so propogation may occur.

lancejpollard

/**
 * Add two bits together and get resulting bits
 * 
 * @param {Number} a bit a 
 * @param {Number} b bit b
 * @returns {Array<Number, Number>} Carry and sum as a result of addition
 */
function addBits(a, b){
    return [ +( a && b ), +( a !== b ) ];

lancejpollard

wildcard DNS in localhost development

• install dnsmasq

$ brew install dnsmasq
   ...
$ cp /usr/local/opt/dnsmasq/dnsmasq.conf.example /usr/local/etc/dnsmasq.conf

• edit /usr/local/etc/dnsmasq.conf

address=/local/127.0.0.1

lancejpollard

Table of Contents

• 0.1. References
  • 0.2. Other cheatsheets
  • 0.3. Manage multiple gcloud config configurations
    • 0.3.1. Switch gcloud context with gcloud config
  • 0.4. Auth
• 0.5. info

lancejpollard

/* @flow */

const KEY_KIND_STRING = 1;
const KEY_KIND_NUMBER = 2;
const KEY_KIND_BOOL = 3;
const KEY_KIND_RECORD = 4;
type KeyKind = 1 | 2 | 3 | 4;

class KeyValue<K, V> {
  key: ?K;

lancejpollard

[
  {
    "num": 0,
    "name": "sys_read",
    "params": [
      [
        "unsigned int",
        "fd"
      ],
      [

lancejpollard

Mike's x86-64 Assembly (ASM) Notes

Assembling Binary Machine Code

Operating Modes:

These determine the assumed/default size of instruction operands, and restricts which opcodes are available, and how they are used.

Modern operating systems, booted inside Real mode,