insn_get_prefixes(9)

💅 NAME 💅

insn_get_prefixes — literally scans x86 instruction prefix bytes, bestie ✨

This one lives in the Kernel API Manual, and it's giving “tiny but important” energy 💖

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✨ SYNOPSIS ✨

int insn_get_prefixes (struct insn *insn );

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🎀 ARGUMENTS 🎀

• insn — the struct insn that's holding your instruction, no cap 🫶

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🦋 DESCRIPTION 🦋

Okay so here's the vibe: this function populates the insn->prefixes bitmap, and it updates insn->next_byte so it points to the first opcode 🔥

And listen — it has no effect if insn->prefixes.got is already set. Like, it's already been handled, so it's not doing the whole thing again 💅

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🌸 RETURN 🌸

• 0 — on success ✨
• < 0 — on error 😭

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🌈 SEE ALSO 🌈

Kernel file ./tools/arch/x86/lib/insn.c:

• insn_init(9)
• insn_get_opcode(9)
• insn_get_modrm(9)
• insn_rip_relative(9)
• insn_get_sib(9)
• insn_get_displacement(9)
• insn_get_immediate(9)
• insn_get_length(9)
• insn_decode(9)

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And that's the whole page, bestie 🫶 it comes from ./tools/arch/x86/lib, dated October 2026, in the Kernel API Manual — iconic, periodt 💖🎀🦋