kernel mailz <kernelmailz@xxxxxxxxxxxxxx> writes: > My query was more on %U1%X1, I guess it is specifying U and/or X for %1 right ? > what does U/X stand for (is it similar to u - unsigned and x for a hex address) > are there any more literals like U/X/... The 'U' and 'X' modifiers expand to 'u' and 'x' resp, depending on the form of the referenced memory operand. That allows one to select the right mnemonic among for example lwz, lwzu, lwzx and lwzux. Those modifiers must always be used together with the "m" constraint. Andreas. -- Andreas Schwab, schwab@xxxxxxxxxxxxxx GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."