ATT syntax decode is ambiguous

[robertwhitton]

In the function ud_translate_att "size" is initialised to zero and isn't subsequently set. Consequently some instructions decode ambiguously and it isn't possible to determine the size of the operation. For example a "mov" instruction with operands of the following type:

mov UD_OP_IMM, UD_OP_MEM

For cases such as this size of the operation is ambiguous in the disassembly.

I suggest that udis86 takes a lead from objdump and for such ambiguous cases appends b, w, l, q to the mnemonic as appropriate. For the case above (and I don't know if there are other similar cases) the attached patch appears to be helpful:

patch.txt

[robertwhitton]

Another set of cases are the single operand instructions such as "not" with an operand of type UD_OP_MEM, New patch attached.

patch2.txt

[robertwhitton]

Yet more cases come to light. All candidate changes attached:

patch3.txt