libmwemu 0.24.5

x86 32/64bits and system internals emulator, for securely emulating malware and other stuff.
Documentation 
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use crate::color;
use crate::emu::Emu;
use iced_x86::Instruction;

pub fn execute(emu: &mut Emu, ins: &Instruction, instruction_sz: usize, _rep_step: bool) -> bool {
    emu.show_instruction(color!("Green"), &crate::emu::decoded_instruction::DecodedInstruction::X86(*ins));

    let old_al = emu.regs().get_al();
    let old_cf = emu.flags().f_cf;
    emu.flags_mut().f_cf = false;

    if (emu.regs().get_al() & 0x0f > 9) || emu.flags().f_af {
        let sum = emu.regs().get_al() + 6;
        emu.regs_mut().set_al(sum & 0xff);
        if sum > 0xff {
            emu.flags_mut().f_cf = true;
        } else {
            emu.flags_mut().f_cf = old_cf;
        }

        emu.flags_mut().f_af = true;
    } else {
        emu.flags_mut().f_af = false;
    }

    if old_al > 0x99 || old_cf {
        let al = emu.regs().get_al() + 0x60;
        emu.regs_mut().set_al(al);
        emu.flags_mut().f_cf = true;
    } else {
        emu.flags_mut().f_cf = false;
    }
    true
}