.* Assembler messages:
.*6: Error: invalid register operand size for `enqcmd'
.*7: Error: invalid register operand size for `enqcmd'
.*8: Error: invalid register operand size for `enqcmds'
.*9: Error: invalid register operand size for `enqcmds'
.*12: Error: invalid register operand size for `enqcmd'
.*13: Error: invalid register operand size for `enqcmd'
.*14: Error: invalid register operand size for `enqcmds'
.*15: Error: invalid register operand size for `enqcmds'