4 ms·

>STRCPY opcode. whats wrong with rep movsb?

• saagarjha 1y ago
  You'd need to run strlen first.
  • joezydeco 1y ago
    Real men just blast through memory until hitting a zero. If it's there at all.
  • cesarb 1y ago
    > You'd need to run strlen first. I might be a bit rusty in my x86 assembly, but wouldn't "repnz movsb" be the x86 strcpy opcode, for zero-terminated strings?
    • muziq 1y ago
      movsb doesn’t set any flags, so no, it isn’t..
    • saagarjha 1y ago
      Not a thing unfortunately; you can only use the rep prefix with movable.
  • rasz 1y ago
    If you care at least a little about buffer overflows You will run one anyway.
    • saagarjha 1y ago
      If you want a strlen+memcpy you are more than welcome to call it yourself