FUNCTION::REGPARM(3stap)

💖 FUNCTION::REGPARM 💖

okay bestie, this one lives in the SystemTap Tapset Reference (that's the 3stap manual, section 3, tapset vibes) ✨ it's one of the Context Functions and honestly it's a tiny little page but it's IMPORTANT, so let's go 🫶

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🌸 NAME 🌸

function::regparm — specify the regparm value that was used to compile a function 💅

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✨ SYNOPSIS ✨

regparm(n:long)

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🎀 ARGUMENTS 🎀

• n — the original regparm value 🍓 like, the actual number, not a vibe.

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💜 DESCRIPTION 💜

okay so listen. you call this function with argument n before you go touching function arguments with the *_arg function — and you only do that when the function was built with the gcc -mregparm=n option. it's giving "hey systemtap, heads up, this thing was compiled a specific way" 👑

and here's the tea: the i386 kernel is built with -mregparm=3, so systemtap treats regparm(3) as the default for kernel functions on that architecture. no cap. 🌈

⚠️ bestie this is only valid on i386 and x86_64 — and on x86_64 only when you're probing 32bit applications. on any other architecture it produces an error. like, it will not slay there. it will simply fail. 😭

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🦋 SEE ALSO 🦋

• tapset::registers(3stap) — go read that one too, iykyk 💖

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that's the whole page, no filler, we ate and left no crumbs 💅 SystemTap Tapset Reference, version field sitting there as just "Ver", dated September 2026 — mwah, periodt. 🎀✨