juniorprincewang

ELF Format Cheatsheet

Introduction

Executable and Linkable Format (ELF), is the default binary format on Linux-based systems.

Compilation

juniorprincewang

package main

import (
	"fmt"
	"io/ioutil"
	"net"
	"os"
)

const (

juniorprincewang

{
    // The following are sample configurations for common case scenarios of debugging
    // Rust in Visual Studio Code
    //
    // For syntax, visit: https://go.microsoft.com/fwlink/?linkid=830387
    //
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch an application",

juniorprincewang

# How to determine if a bash variable is empty?


# A variable in bash (and any POSIX-compatible shell) can be in one of three states:
#
# unset
# set to the empty string
# set to a non-empty string
# Most of the time you only need to know if a variable is set to a non-empty string, but occasionally it's important to distinguish between unset and set # to the empty string.
#

juniorprincewang

#include <cmath>
#include <thread>
#include <Windows.h>
#include <MMSystem.h>
#pragma comment(lib, "winmm")

struct MultiMediaTimer {
	static const wchar_t* name;
	static LARGE_INTEGER elapsed[10000];
	static int idx;

juniorprincewang

SAN_CMP := -fno-omit-frame-pointer -fsanitize=address
SAN_STAT := -static-libstdc++ -static-libasan

BIN_CMP := -std=c++11 -c -I. main.cpp -O -g3 -o main.o
LIB_CMP := -std=c++11 my.cpp -o libmy.so -shared -fPIC -g3	

RUN := LD_LIBRARY_PATH=. ASAN_OPTIONS=symbolize=1 ASAN_SYMBOLIZER_PATH=$(shell which llvm-symbolizer)
PRELOAD := LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.5

lib-gcc: 

juniorprincewang

#
# Copyright (C) 2009-2011 The Android-x86 Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#

juniorprincewang

Building and using mesa for development and testing

This explains how to build mesa from source, and how to use the custom built mesa to run some apps and games, without needing to replace the mesa libraries that your operating system runs on.

Let's assume that you are using an x86_64 system.

Install dependencies

This is how to install them on Fedora. You can substitute with other distros' package managers, the packages are named similarly but maybe have a different naming convention (eg. -dev vs. -devel, etc.).

juniorprincewang

all:
	$(CC) *.c -lm `sdl2-config --cflags` `sdl2-config --libs` -lEGL -lGLESv1_CM -o gles_linux
clean:
	-rm -f gles_linux
	-rm -f *.o

juniorprincewang

nouveau 0000:01:00.0: DRM: func nouveau_gem_ioctl_new size 0x24
nouveau 0000:01:00.0: DRM: func nouveau_bo_new size 0000000000000024 flags 4
nouveau 0000:01:00.0: DRM: page shift 12, pi 1
nouveau: DRM-master:00000000:00000000: ioctl: size 82
nouveau: DRM-master:00000000:00000000: ioctl: vers 0 type 02 object ffff9eb9ff0800f8 owner ff
nouveau: DRM-master:00000000:80009009: ioctl: new size 58
nouveau: DRM-master:00000000:80009009: ioctl: new vers 0 handle 00000000 class 8000900b route 00 token ffff9eba44a8e090 object ffff9eba44a8e090
nouveau: DRM-master:00000000:80009009: func nvkm_ummu_sclass
nouveau: DRM-master:00000000:80009009: func nvkm_umem_new type 5 page 12 size 0x1000
nouveau 0000:01:00.0: mmu: func nvkm_mem_new_type type NVKM_MEM_VRAM