libmwemu 0.25.4

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;

// PSIGNB: for each lane, negate the destination lane if the source lane is
// negative, zero it if the source lane is zero, otherwise leave it unchanged.
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 dest = emu.get_operand_xmm_value_128(ins, 0, true).unwrap_or(0);
    let src = emu.get_operand_xmm_value_128(ins, 1, true).unwrap_or(0);
    let mut result = 0u128;
    for i in 0..16 {
        let shift = i * 8;
        let d = ((dest >> shift) & 0xff) as i8;
        let s = ((src >> shift) & 0xff) as i8;
        let out = if s < 0 {
            d.wrapping_neg()
        } else if s == 0 {
            0
        } else {
            d
        };
        result |= ((out as u8) as u128) << shift;
    }
    emu.set_operand_xmm_value_128(ins, 0, result);
    true
}