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.
-all Return all possible forms of the instruction.
-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).