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  • Condition Codes 3: Conditional Execution in Thumb-2

    Jacob Bramley
    Jacob Bramley
    This post is part of a series:
    • Condition Codes 1: Condition Flags and Codes
    • Condition Codes 2: Conditional Execution
    • Condition Codes 3: Conditional Execution in Thumb-2
    • Condition Codes 4: Floating-Point Comparison Using VFP

    Note: Armv8 deprecates…

    • over 6 years ago
    • Processors
    • Processors blog
  • Decoding the Startup file for Arm Cortex-M4

    Gopal Amlekar
    Gopal Amlekar

    Introduction

    This is my attempt to understand the startup file for an Arm Cortex M4 processor, specifically the STM32F4 (Cortex M4) processor. This document should help in giving a feel of assembly language for Arm and understanding how the Cortex M4…

    • startup_stm32f40xx.s.zip
    • over 5 years ago
    • Processors
    • Processors blog
  • Branch and Call Sequences Explained

    Jacob Bramley
    Jacob Bramley

    What Does a Branch Do?

    A branch, quite simply, is a break in the sequential flow of instructions that the processor is executing. Some other architectures call them jumps, but they're essentially the same thing. The following is a trivial, and hopefully…

    • over 6 years ago
    • Processors
    • Processors blog
  • Useful assembler directives and macros for the GNU assembler

    Jens Bauer
    Jens Bauer

    Introduction

    In order to keep my assembly-related documents easy to read and understand, I've written some macros for the GNU-assembler (also known as GAS).

    These macros will also make it easier for you to program in assembly language.

    The macros…

    • over 4 years ago
    • Processors
    • Processors blog
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