Performance & Systems
Aug 7, 2026
Architecture of an Assembler Data Structures in Assembler Design - Relocation Table
Architecture of an Assembler: Data Structures in Assembler Design -> Relocation TableThe relocation table is a fundamental data structure in assembler and linker design, responsible for recording references to symbols or addresses that cannot be resolved at assembly time. These relocations are deferred until the…
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Performance & Systems
Aug 7, 2026
Architecture of an Assembler Data Structures in Assembler Design - Symbol Table
Architecture of an Assembler: Data Structures in Assembler Design -> Symbol TableThe symbol table is one of the core data structures in any assembler. It serves as a central repository for all named identifiers encountered during the assembly process, including labels, variables, macros, constants, and external…
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Performance & Systems
Aug 7, 2026
Architecture of an Assembler Lexical analysis and tokenizing
Architecture of an Assembler: Lexical analysis and tokenizingAfter preprocessing completes macro expansion, includes, and directive handling, the assembler proceeds to lexical analysis, also known as tokenizing. This phase is essential to convert the raw text of the assembly source code into structured elements called…
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Performance & Systems
Aug 7, 2026
Architecture of an Assembler Syntax Analysis Grammar and Parsing
Architecture of an Assembler: Syntax Analysis: Grammar and ParsingFollowing the lexical analysis phase, the assembler enters the syntax analysis or parsing stage. This phase is responsible for interpreting the token stream produced by lexical analysis, checking it against the formal grammar of the assembly language,…
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Performance & Systems
Aug 7, 2026
Architecture of an Assembler Assembler Phases Explained
Architecture of an Assembler: Assembler Phases Explained - Preprocessing: Macro Expansion, Includes, Directives1. Overview of Preprocessing in an AssemblerPreprocessing is the initial phase in the assembly process where the assembler prepares the source code for subsequent parsing and translation. This phase handles…
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Performance & Systems
Aug 7, 2026
x86-64 Machine Code Encoding Little-endian Conversion Walkthroughs
x86-64 Machine Code Encoding: Little-endian Conversion WalkthroughsThe x86-64 architecture uses little-endian byte order for representing multi-byte values such as immediate constants, displacement fields, and memory contents. Understanding how to correctly convert multi-byte numerical values into little-endian format…
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Performance & Systems
Aug 7, 2026
Drawing Graphics with CPU Only on Windows Using GAS Assembly (Intel Syntax)
Drawing Graphics with CPU Only on Windows Using GAS Assembly (Intel Syntax) This example shows how to create a simple Windows application in pure x86 Intel syntax assembly, which:Creates a windowAllocates a framebuffer in memoryDraws a red square pixel-by-pixel into the bufferDisplays it on the window using…
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Performance & Systems
Aug 7, 2026
x86-64 Machine Code Encoding Real encoding examples with byte breakdowns
x86-64 Machine Code Encoding: Real encoding examples with byte breakdownsThis section presents practical, real-world examples of x86-64 machine code instruction encodings with detailed byte-level breakdowns. Understanding how instructions translate into machine code byte sequences is essential when designing an…
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Performance & Systems
Aug 7, 2026
x86-64 Machine Code Encoding Encoding Examples
x86-64 Machine Code Encoding: Encoding Examples - MOV, ADD, JMP, CALL.IntroductionThis section provides concrete examples of machine code encoding for several fundamental x86-64 instructions: MOV, ADD, JMP, and CALL. These instructions are central to virtually every program and understanding their encoding is critical…
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