The purpose of writing this article is to help those who are just starting or preparing to study the Windows system. This article serves only as an experience sharing, summarizing some experiences I gathered while reverse-engineering the Windows 10 heap APIs CreateHeap, AllocateHeap, and AllocateHeapInternal. If there are errors, please correct me, seniors. We only … Read more
“ Keywords: STM32CubeIDE, Heap, __sbrk Problem Description Recently, a client requested to specify the heap address in STM32CubeIDE to a dedicated RAM. Problem Analysis The default stack configuration diagram in the project generated by STM32CubeIDE is shown in Figure 1: Solution The project generated by STM32CubeIDE will automatically create a file named sysmem.c. In this … Read more
1. What are the methods of memory allocation in C language? ▍Technical Principles Explained In embedded systems, the memory allocation mechanism directly affects the stability and performance of programs. C language manages memory through the following three methods: Memory Allocation Methods Low-Level Mechanism Analysis: 1. Static Storage Area Lifecycle: Allocated at program startup, released at … Read more
Follow+Star Public Account Number, don’t miss out on exciting content Author | strongerHuang WeChat Public Account | Embedded Column The stack is very important for programs; it plays a significant role in enabling programs to run quickly. But do you understand the stack? 1Introduction We all know that the stack is located in RAM, and … Read more
Article Word Count: 8000 Content Quality Index:⭐⭐⭐⭐⭐ 01Five Major Memory Areas The memory is divided into five areas: heap, stack, free storage area, global/static storage area, and constant storage area. 1. Stack Area: FIFO refers to the storage area for variables allocated by the compiler when needed and automatically cleared when not needed. The variables … Read more
The management method of ptmalloc2, the chunk structure, and the bins model have been explained very clearly in the Overview of GLIBC heap exploitation techniques and ctfwiki. This article records my learning process of heap exploitation. This series will update a chapter every day, and it is expected to complete updates for glibc2.23, glibc2.27, and … Read more
Word Count: 9000 Content Quality: ⭐⭐⭐⭐⭐ 1. Prerequisite Knowledge—Memory Allocation in Programs A program compiled by C/C++ occupies memory divided into the following parts: 1. Stack Area (stack)—automatically allocated and released by the compiler, used for storing function parameters and local variable values. Its operation is similar to a stack in data structures. 2. Heap … Read more
Introduction: This is a quick tutorial on how to use GDB to inspect the stack space of a C program. Word count: 7403, estimated reading time: 10 minutes https://linux.cn/article-13550-1.htmlAuthor: Julia EvansTranslator: amwps290 Yesterday, while chatting with some people, they mentioned that they didn’t really understand how the stack works and didn’t know how to inspect … Read more
Introduction This article officially starts learning about the FreeRTOS operating system. I plan to write a series of articles to help everyone quickly get started with FreeRTOS. 1. Introduction to FreeRTOS FreeRTOS is an open-source, real-time, embedded operating system that is widely used in small embedded systems and microcontrollers. The design goal of FreeRTOS is … Read more