Executable Code Golf - Making Tiny Binaries for Constrained Systems

Executable Code Golf - Making Tiny Binaries for Constrained Systems

linux.conf.au via YouTube Direct link

What is Code Golf?

2 of 23

2 of 23

What is Code Golf?

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Executable Code Golf - Making Tiny Binaries for Constrained Systems

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  1. 1 Intro
  2. 2 What is Code Golf?
  3. 3 But What is Executable Code Golf?
  4. 4 Example: Paint in 16 bytes
  5. 5 My Hobby: Making 256B Animations
  6. 6 Many Different Categories
  7. 7 State of the Art 1kB to 8kB (Windows v. Linux)
  8. 8 XLINK project (1) • Goal: Produce an open source link-time compressor non-Windows platforms
  9. 9 PAQ Compression Algorithm
  10. 10 Arithmetic Range Coding Properties
  11. 11 Context Modeling and Context Mixing
  12. 12 Sparse n-gram Context Modeling . For each bit to decode
  13. 13 Complete Decoder Specification • Entropy Segment data structure that describes decoder problem
  14. 14 Why does this work better than LZ based compression?
  15. 15 Anatomy of an Object / Library File
  16. 16 XLINK Implementation • Linux linker has many implementation concerns
  17. 17 Programming in MS-DOS
  18. 18 Cannot access enough memory for hash table
  19. 19 Need 32-bit registers for more accurate EC
  20. 20 Hash function too slow for use on 386
  21. 21 i386 PAQ Decompression Stub (255 bytes)
  22. 22 Why should I care about binary compression in 2019?
  23. 23 Future Directions

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