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Add support for xmmword ref during dissasm. #124

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Jun 19, 2024
Merged

Add support for xmmword ref during dissasm. #124

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7 changes: 1 addition & 6 deletions malduck/disasm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,12 +24,7 @@ class Operand:
_x86_op_mem = None
regs: Dict[str, Union[str, int]] = {}

sizes = {
1: "byte",
2: "word",
4: "dword",
8: "qword",
}
sizes = {1: "byte", 2: "word", 4: "dword", 8: "qword", 16: "xmmword"}

def __init__(self, op: X86Op, x64: bool) -> None:
self.op = op
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6 changes: 6 additions & 0 deletions tests/test_disasm.py
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Expand Up @@ -21,6 +21,8 @@ class TestDisasm(object):
b"\xe8\x00\x00\x00\x00",
# movxz eax, byte [0x400000]
b"\x0f\xb6\x05\x00\x00\x04\x00",
# movups xmmword ptr [esi+0Ch], xmm0
b"\x0f\x11\x46\x0c"
))

def setup_method(self):
Expand Down Expand Up @@ -60,6 +62,10 @@ def test_insns(self):
assert insn7.op2.reg is None
assert insn7.op2 == (None, None, None, 0x400000)

insn8 = self.insns[7]
assert insn8.op2.reg == "xmm0"
assert insn8.op1.mem == ("xmmword", "esi", None, None, 0x0C)

def test_equal(self):
assert next(disasm(b"hAAAA", 0)).mnem == "push"
assert next(disasm(b"hAAAA", 0)).op1.value == 0x41414141
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