libmwemu 0.24.1

x86 32/64bits and system internals emulator, for securely emulating malware and other stuff.
Documentation 
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use crate::*;

// PMULHUW - Multiply Packed Unsigned Integers and Store High Result
//
// Multiplies 8 packed unsigned word integers and stores the high 16 bits of each result.
//
// Opcode:
// 66 0F E4 /r         PMULHUW xmm1, xmm2/m128   - Multiply high unsigned words

const ALIGNED_ADDR: u64 = 0x3000;
const ALIGNED_ADDR2: u64 = 0x3100;

#[test]
fn test_pmulhuw_all_zeros() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00, // MOVDQA XMM0, [RAX]
        0x66, 0x0f, 0x6f, 0x0b, // MOVDQA XMM1, [RBX]
        0x66, 0x0f, 0xe4, 0xc1, // PMULHUW XMM0, XMM1
        0xf4, // HLT
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_all_ones() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_max_values() {
    let mut emu = emu64();
    // 0xFFFF * 0xFFFF = 0xFFFE0001, high 16 bits = 0xFFFE
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_small_values() {
    let mut emu = emu64();
    // 0x0002 * 0x0003 = 0x00000006, high 16 bits = 0x0000
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x03, 0x00, 0x03, 0x00, 0x03, 0x00, 0x03, 0x00, 0x03, 0x00, 0x03, 0x00, 0x03, 0x00, 0x03, 0x00]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_large_values() {
    let mut emu = emu64();
    // 0x8000 * 0x8000 = 0x40000000, high 16 bits = 0x4000
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_mixed_values() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    let data1 = [0x00, 0x01, 0x00, 0x02, 0x00, 0x04, 0x00, 0x08,
                 0x00, 0x10, 0x00, 0x20, 0x00, 0x40, 0x00, 0x80];
    let data2 = [0x00, 0x80, 0x00, 0x40, 0x00, 0x20, 0x00, 0x10,
                 0x00, 0x08, 0x00, 0x04, 0x00, 0x02, 0x00, 0x01];
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &data1);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &data2);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_xmm2_xmm3() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x10, // MOVDQA XMM2, [RAX]
        0x66, 0x0f, 0x6f, 0x1b, // MOVDQA XMM3, [RBX]
        0x66, 0x0f, 0xe4, 0xd3, // PMULHUW XMM2, XMM3
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x11, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66, 0x77, 0x77, 0x88, 0x88]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_from_memory() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0xe4, 0x03, // PMULHUW XMM0, [RBX]
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00, 0x02, 0x00]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_power_of_two() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x00, 0x01, 0x00, 0x02, 0x00, 0x04, 0x00, 0x08, 0x00, 0x10, 0x00, 0x20, 0x00, 0x40, 0x00, 0x80]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x00, 0x01, 0x00, 0x02, 0x00, 0x04, 0x00, 0x08, 0x00, 0x10, 0x00, 0x20, 0x00, 0x40, 0x00, 0x80]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_xmm8_xmm9() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x44, 0x0f, 0x6f, 0x00, // MOVDQA XMM8, [RAX]
        0x66, 0x44, 0x0f, 0x6f, 0x0b, // MOVDQA XMM9, [RBX]
        0x66, 0x45, 0x0f, 0xe4, 0xc1, // PMULHUW XMM8, XMM9
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_same_register() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00, // MOVDQA XMM0, [RAX]
        0x66, 0x0f, 0xe4, 0xc0, // PMULHUW XMM0, XMM0
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_sequence() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00, // MOVDQA XMM0, [RAX]
        0x66, 0x0f, 0x6f, 0x08, // MOVDQA XMM1, [RAX]
        0x66, 0x0f, 0xe4, 0xc1, // PMULHUW XMM0, XMM1
        0x66, 0x0f, 0xe4, 0xc1, // PMULHUW XMM0, XMM1 again
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10, 0x00, 0x10]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_alternating_values() {
    let mut emu = emu64();
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0xFF, 0xFF, 0x01, 0x00, 0xFF, 0xFF, 0x01, 0x00, 0xFF, 0xFF, 0x01, 0x00, 0xFF, 0xFF, 0x01, 0x00]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0x01, 0x00, 0xFF, 0xFF, 0x01, 0x00, 0xFF, 0xFF, 0x01, 0x00, 0xFF, 0xFF, 0x01, 0x00, 0xFF, 0xFF]);
    emu.run(None).unwrap();
}

#[test]
fn test_pmulhuw_half_max() {
    let mut emu = emu64();
    // 0x7FFF * 0x7FFF, testing mid-range values
    let code = [0x48, 0xb8];
    let mut full_code = code.to_vec();
    full_code.extend_from_slice(&ALIGNED_ADDR.to_le_bytes());
    full_code.extend_from_slice(&[0x48, 0xbb]);
    full_code.extend_from_slice(&ALIGNED_ADDR2.to_le_bytes());
    full_code.extend_from_slice(&[
        0x66, 0x0f, 0x6f, 0x00,
        0x66, 0x0f, 0x6f, 0x0b,
        0x66, 0x0f, 0xe4, 0xc1,
        0xf4,
    ]);

    emu.load_code_bytes(&full_code);
    emu.maps.write_bytes_slice(ALIGNED_ADDR, &[0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F]);
    emu.maps.write_bytes_slice(ALIGNED_ADDR2, &[0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F, 0xFF, 0x7F]);
    emu.run(None).unwrap();
}