mipsr6_emul(9)

✨ mipsr6_emul(9) ✨

okay so this is a page from the Kernel API Manual, bestie, and lemme tell you it's a good one 🎀

💖 NAME 💖

mipsr6_emul — the function that emulates some of the super frequent R2/R5/R6 instructions in the delay slot, purely for performance 💅

like, fr fr, the whole point is speed. The old-school way of doing this was using a stack trampoline, and ngl that thing is rather slow 😭 so instead we do the emulation thing. periodt.

---

🦋 SYNOPSIS 🦋

int mipsr6_emul (struct pt_regs *regs , u32 ir );

🌸 ARGUMENTS 🌸

• regs — the process register set. like, the whole vibe check of the registers, all of them 🫶
• ir — the instruction. the one single instruction you're dealing with ⭐

🌈 SEE ALSO 🌈

bestie there is a whole family here and we are obsessed 👑

First up, the kernel file itself:

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

and then the entire friend group of helper funcs, all of them (9):

• movf_func(9)
• movt_func(9)
• jr_func(9)
• movz_func(9)
• movn_func(9)
• mfhi_func(9)
• mthi_func(9)
• mflo_func(9)
• mtlo_func(9)
• mult_func(9)
• multu_func(9)
• div_func(9)
• divu_func(9)
• dmult_func(9)
• dmultu_func(9)
• ddiv_func(9)
• ddivu_func(9)
• madd_func(9)
• maddu_func(9)
• msub_func(9)
• msubu_func(9)
• mul_func(9)
• clz_func(9)
• clo_func(9)
• dclz_func(9)
• dclo_func(9)
• mipsr2_decoder(9)

no cap, that's a lot of little funcs but they all ate 💀 every single one is on here for a reason, don't skip any 🍓

---

and that's the whole page, babe 🧚✨ this one lives under ./arch/mips/kernel and the version/date stamp on it is October 2026 — so yeah, go off, October 2026, we see you 💜💅