Memory Allocators 101 - Write a simple memory allocator
Code related to this article: github.com/arjun024/memalloc This article is about writing a simple memory allocator in C. We will implement malloc(), calloc(), realloc() and free(). This is a beginner level article, so I will not spell out every detail. This memory allocator will not be fast and efficient, we will not adjust allocated memory to align to a page boundary, but we will build a memory a
Kernels 101 – Let's write a Kernel
Hello World, Let us write a simple kernel which could be loaded with the GRUB bootloader on an x86 system. This kernel will display a message on the screen and then hang. How does an x86 machine boot Before we think about writing a kernel, let’s see how the machine boots up and transfers control to the kernel: Most registers of the x86 CPU have well defined values after power-on. The Instruction P
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