“From today on, study hard and make progress every day” Repetition is the best method for memory; spend one minute every day to remember the basics of C language. “C Language Beginner’s Must-Learn Knowledge Points Note Series 100 Articles“ The following notes finally enter the practical series, which is also the most important and difficult … Read more
Today, we continue discussing an important type of pointer in C: the void pointer. Void Pointer: The “Universal Key” of C Language 1 What is a void pointer? A void pointer is a special pointer type in C, defined as<span>void *</span>. It can point to the memory address of any data type, serving as a … Read more
In the study of computer science, understanding how high-level languages are translated into instructions that machines can execute is a core skill. This article will analyze the correspondence between a specific C function and its corresponding x86-64 assembly code example, revealing the underlying workings of computers. Starting with a C Function The example is taken … Read more
In assembly language (especially in the x86 architecture), <span>dword ptr </span>is a term used to specify the size of data and the addressing mode for memory operations. 1 dword It stands for “double word,” which refers to 32 bits (4 bytes) of data. In the x86 architecture: 1 word = 16 bits (2 bytes) 1 … Read more
string.h is one of the most commonly used libraries in C language, which can be broadly divided into memory operations and string operations. This article will detail all the functions in <span>memory operations</span>. 🌟 1. Memory Operations <span>memcpy</span> Function: Copies n bytes from the source address to the destination address. Prototype:<span>extern void *memcpy (void *__restrict … Read more
SIMD has played an increasingly important role in processors in recent years, providing significant performance improvements for multimedia applications, and most computations within GPGPU warps are also performed in a SIMD-like manner. Understanding SIMD is crucial for a comprehensive understanding of architecture. This book provides a comprehensive and detailed introduction to the design concepts and … Read more
Article Length: 4600 Content Quality Index: ⭐⭐⭐⭐⭐ Memory Operations in C Language Embedded System Programming In embedded system programming, it is often required to read and write content in specific memory units. Assembly language has the corresponding MOV instruction, while other programming languages, except C/C++, generally do not have the capability to directly access absolute … Read more