movn_func(9)

πŸ“¦ version 7.3.1, in nixpkgs unstable

πŸ’… movn_func(9) β€” a Kernel API Manual moment

okay so bestie, welcome to movn_func(9), straight out of the Kernel API Manual ✨ this one is short, it's sweet, and it literally cannot fail (we'll get there 🫢).


πŸŽ€ NAME πŸŽ€

movn_func β€” Emulate a MOVZ instruction

no cap, that's what it says, we're not arguing with the docs today πŸ’€


🌸 SYNOPSIS 🌸

int movn_func (struct pt_regs *regs , u32 ir );

that's the whole vibe check: you hand it two things, it hands you back an int. simple. iconic. πŸ‘‘


πŸ¦‹ ARGUMENTS πŸ¦‹

  • regs β€” Process register set. it's the process's whole register situation, and yeah, this function gets the keys to it πŸ”‘
  • ir β€” Instruction. the actual instruction itself, coming in hot to get emulated πŸ’«

✨ DESCRIPTION ✨

Returns 0 since it always succeeds.

that's it. that's the description. it returns 0, because it always succeeds β€” not "usually", not "when the vibes are right", always πŸ˜­πŸ’– main character function behavior fr fr. no error paths, no drama, no <errno> shenanigans. it just slays and returns 0 🫢


🌈 SEE ALSO 🌈

Kernel file ./arch/mips/kernel/mips-r2-to-r6-emul.c, plus the whole friend group πŸ‘―β€β™€οΈ:

like, go read them all, they're all in ./arch/mips/kernel and they're all equally obsessed with emulation πŸ§šπŸ’œ


real talk: this page lives at ./arch/mips/kernel, dated October 2026, and it's forever filed under movn_func(9). mwah, bye bestie πŸ’…πŸ’–βœ¨
πŸ“¦ where this page comes from