General Commands Manual

NAME¶

fcml-asm - single-line assembler

SYNOPSIS¶

fcml-asm [-abs] [-sib] [-rex] [-gas] [-asa<size>] [-osa<size>] -m<size> -ip <address> <instruction>

fcml-asm is a single-line assembler for Intel iAPx86, IA-32 and EM64T CPUs, and compatible CPUs from other manufacturers.

It displays all possible encodings of the given assembly-language instruction.

fcml-asm accepts the following options:

-abs: Prefer absolute memory addressing where possible. This is particularly useful in 64-bit mode, for RIP addressing.
-sib: Prefer encoding using a SIB byte (scale * index + base).
-rex: Use a REX prefix even if it is optional.
-gas: Use GNU Assembler dialect (also known as AT&T). The Intel dialect is used by default.
-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).

fcml-asm was written by Slawomir Wojtasiak.

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

February 2, 2015

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