ddivu_func(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ddivu_func(9) — like, the Kernel API Manual, bestie 🎀

okay so you found the page for ddivu_func and I'm gonna hold your hand through it, no gatekeeping, no cap. This is from the Kernel API Manual and it's literally one little function with one little job. iconic behavior honestly 🦋

✨ NAME ✨

ddivu_func — emulate a DDIVU instruction 💫

That's it. That's the whole vibe. It fakes a DDIVU instruction for you so the kernel doesn't have to have a whole crisis about it.

🌸 SYNOPSIS 🌸

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

yes the spacing is exactly like that, don't come for me, I'm copying it verbatim because that's the whole point 🫶

🧚 ARGUMENTS 🧚

  • regs — the process register set 👑 like, the full little snapshot of where the process's registers are at
  • ir — the instruction 💅 the actual instruction you're asking it to emulate

two args, both main character energy, both absolutely necessary.

🔥 DESCRIPTION 🔥

It returns 0 on success. and for 32-bit kernels it returns SIGILL instead 😭 that's the entire description, she's short and she's honest.

lowkey important: SIGILL is not a "oops something broke" return, it's the return for 32-bit kernels here. don't @ me, that's just what the page says 💀

🦋 SEE ALSO 🦋

first up, the source file this lives in:

  • the kernel file ./arch/mips/kernel/mips-r2-to-r6-emul.c 📁

and then the whole bestie squad of emulation functions, all here, all accounted for, no one left behind 💖:

like, that's a group chat, and every single one of them got an invite 💌

that's the whole page, bestie, you ate that 🍓

sign-off time 🎀 this one lives under ./arch/mips/kernel and the date on it is October 2026 — so yes, she's from the future, we stan a forward-thinking manpage 💜✨
📦 where this page comes from