fcml-disasm(1)

💖 fcml-disasm 💖 — the single-line disassembler (General Commands Manual, bestie, that's the whole vibe)

okay so imagine you have some raw machine code and you're like "what even IS this" — that's literally what this lil icon does 🫶

✨ NAME ✨

fcml-disasm — single-line disassembler. that's it. that's the name. short, sweet, slays.

🎀 SYNOPSIS 🎀

fcml-disasm [-s] [-e] [-rc] [-rh] [-rz] [-rs] [-gas] [-asa<size>]
[-osa<size>] -m<size> -ip <address> <code>

🌸 DESCRIPTION 🌸

fcml-disasm is a single-line disassembler for Intel iAPx86, IA-32 and EM64T CPUs, plus compatible CPUs from other manufacturers. so like, not just Intel's own babies — the lookalikes get love too 💅

and here's the part that's genuinely giving main character energy: it shows you all possible interpretations of the machine code you hand it. not one answer. ALL of them. because machine code is ambiguous and honestly? relatable. 😭

✨ OPTIONS ✨

fcml-disasm accepts the following options:

• -s — prefer short instruction forms. keep it cute, keep it compact 🎀
• -e — extend displacement sizes to address size attribute.
• -rc — render instruction code.
• -rh — render immediate values and displacements as hexadecimal.
• -rz — remove leading zeroes. (not the zeroes slaying, the zeroes padding. we're cleaning house ✨)
• -rs — render segment prefixes even when they are optional. yes, even the optional ones. no skipping.
• -gas — use GNU Assembler dialect (also known as AT&T). the Intel dialect is used by default, iykyk 👑
• -asa<size> — specify the size of the address size attribute (16, 32 or 64 for respectively 16, 32 and 63 bits).
• -osa<size> — specify the size of the operand size attribute (16, 32 or 64 for respectively 16, 32 and 63 bits).
• -m<size> — specify the addressing mode (16, 32 or 64).
• -ip <address> — specify the instruction pointer address (IP, EIP or RIP). know your place bestie, literally, in memory 💜

heads up: <size> goes in with the flag — no space, like -m64. and -ip does take a space before the <address>. the way they're formatted differently is lowkey chaotic but that's the assignment 🤷

💖 AUTHORS 💖

fcml-disasm was written by Slawomir Wojtasiak. absolute legend, no cap 🫶

this manual page was written by Stephen Kitt <skitt@debian.org>, for the Debian GNU/Linux system (but may be used by others). sharing is caring, periodt ✨

and that's the whole page bestie!! this lil manual came from the fcml fam and it's dated February 2, 2015 — an elder, but a gorgeous one 💅🦋 go disassemble something and think of me 🌸