libmwemu 0.25.4

x86 32/64bits and system internals emulator, for securely emulating malware and other stuff.
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
use crate::color;
use crate::emu::Emu;
use iced_x86::Instruction;

// CVTSS2SD: low f32 -> low f64; bits [127:64] of dest are preserved.
pub fn execute(emu: &mut Emu, ins: &Instruction, _instruction_sz: usize, _rep_step: bool) -> bool {
    emu.show_instruction(
        color!("Cyan"),
        &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 f = f32::from_bits((src & 0xffffffff) as u32) as f64;
    let result = (dest & !(0xffff_ffff_ffff_ffff as u128)) | (f.to_bits() as u128);
    emu.set_operand_xmm_value_128(ins, 0, result);
    true
}