Why are rbp and rsp called general purpose registers?

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  1. Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
  2. What do the E and R prefixes stand for in the names of Intel 32-bit and 64-bit registers?
  3. Why is the address of static variables relative to the Instruction Pointer?
  4. What are the names of the new X86_64 processors registers?
  5. Assembly registers in 64-bit architecture
  6. x86_64 registers rax/eax/ax/al overwriting full register contents [duplicate]
  7. Why can I access lower dword/word/byte in a register but not higher?
  8. What’s the best way to remember the x86-64 System V arg register order?
  9. Why use RIP-relative addressing in NASM?
  10. How do AX, AH, AL map onto EAX?
  11. Difference between movq and movabsq in x86-64
  12. rbp not allowed as SIB base?
  13. Where exactly is the red zone on x86-64?
  14. Why is there not a register that contains the higher bytes of EAX?
  15. why we can’t move a 64-bit immediate value to memory?
  16. Set all bits in CPU register to 1 efficiently
  17. Why is imul used for multiplying unsigned numbers?
  18. Why can’t I move directly a byte to a 64 bit register?
  19. Does it make any sense to use the LFENCE instruction on x86/x86_64 processors?
  20. Why not store function parameters in XMM vector registers?
  21. Segmentation fault when using DB (define byte) inside a function
  22. How to use RIP Relative Addressing in a 64-bit assembly program?
  23. What does an asterisk * before an address mean in x86-64 AT&T assembly?
  24. When should I use size directives in x86?
  25. Why are x86 registers named the way they are?
  26. Understanding %rip register in intel assembly
  27. Using 8-bit registers in x86-64 indexed addressing modes
  28. rsp doesn’t move when entering new function [duplicate]
  29. Is reserving stack space necessary for functions less than four arguments?
  30. Can rip be used with another register with RIP-relative addressing?

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