Barebit
UD use wrong operand types and wrong instruction name
Right now UD encoded with opcode 0F B9 doesn't have any operand types.
According to the intel docs:
0F B9 /r UD1 r32, r/m32 RM Valid Valid Raise invalid opcode exception.
The instruction should use the v operand type according to my testing against objdump which is defined as:
Word or doubleword, depending on operand-size attribute (for example, INC (40), PUSH (50)).
Also the instruction mnemonic is defined as UD1 instead of UD
Yes, it was undocumented in older manuals, it should be corrected now. However, the operands are:
UD1 r32, r/m32
So it should use d operand type (Doubleword, regardless of operand-size attribute). Actually the real operand size doesn't matter here because the operands are not used anyway: "Other than raising the invalid opcode exception, this instruction has no effect on processor state or memory".
