SimplifyC++ Articles
Browse modern C++, compilers, systems programming, low-level development, Rust, tools, and AI articles with cleaner cards and live reading counts.
1. Full x86-64 Instruction Decoding Tree (Ghidra Style) Example instruction: xxxxxxxxxx mov r10, [r8 + r9*4 + 16] Machine code (conceptual layout): xxxxxxxxxx REX OPCODE ModR/M SIB DISP4C 8B 54 88 ...
1. Full Instruction Layout (x86-64) xxxxxxxxxx +--------+---------+----------+-------+--------+--------+| REX | OPCODE | ModR/M | SIB | DISP | IMM ...
1. Full Instruction Layout (x86-64) A typical instruction looks like this: [ REX ] [ OPCODE ] [ MODR/M ] [ SIB ] [ DISP ] [ IMM ] Not all fields are always present. 2. Focus: REX + ModR/M Interaction Step-by-step...
x86-64 architecture extends the original x86 CPU register set from 8 to 16 general-purpose registers while maintaining full backward compatibility. This is achieved using a mechanism called the REX prefix, which adds...
Modern x86-64 processors operate in several distinct modes that determine: Instruction decoding Register size and availability Memory addressing behavior Privilege and protection mechanisms These modes exist primarily...
Many developers simplify the role of an Assembler into a single sentence: “It is a program that converts assembly instructions into machine code.” This statement is not wrong—but it is deeply incomplete. A real...
A technical response to those who reduce the discussion to “C is simpler and has a stable ABI” This article is not a theoretical preference or an abstract language debate. I am currently designing and...
A Deep Technical Analysis of Architecture, Security, and Modern Low-Level Programming Alternatives For decades, inline assembly was one of the most powerful and flexible tools in C++. Through it, developers could...
Apple Silicon has revolutionized the landscape of modern CPUs with its custom ARM-based architecture. While these chips—M1, M2, M3, and M4—adhere to the AArch64 (ARM64) instruction set, Apple has introduced subtle,...