diff options
Diffstat (limited to 'src/long_mode')
| -rw-r--r-- | src/long_mode/mod.rs | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/src/long_mode/mod.rs b/src/long_mode/mod.rs index 363c605..d165e38 100644 --- a/src/long_mode/mod.rs +++ b/src/long_mode/mod.rs @@ -5665,20 +5665,28 @@ fn read_sib<T: Iterator<Item=u8>>(bytes_iter: &mut T, instr: &mut Instruction, m OperandSpec::DispU32 } else { + instr.modrm_mmm.num |= 0b101; + if instr.prefixes.rex().x() { instr.sib_index.num = 0b1100; let scale = 1u8 << (sibbyte >> 6); instr.scale = scale; if disp == 0 { - OperandSpec::RegIndexBaseScale + if modbits == 0 { + OperandSpec::RegScale + } else { + OperandSpec::RegIndexBaseScale + } } else { instr.disp = disp as i64 as u64; - OperandSpec::RegIndexBaseScaleDisp + if modbits == 0 { + OperandSpec::RegScaleDisp + } else { + OperandSpec::RegIndexBaseScaleDisp + } } } else { - instr.modrm_mmm.num |= 0b101; - if disp == 0 { OperandSpec::Deref } else { |