-m31 | -m64
These options are only available with the ELF object file format, and require that the necessary BFD support has been included (on a 31-bit platform you must add –enable-64-bit-bfd on the call to the configure script to enable 64-bit usage and use s390x as target platform).
-mesa | -mzarch
The 64-bit instructions are only available with the z/Architecture mode. The combination of ‘ -m64 ’ and ‘ -mesa ’ results in a warning message.
Assembling an instruction that is not supported on the target processor results in an error message.
The processor names starting with
refer to the edition number in the Principle of Operations manual. They can be used as alternate processor names and have been added for compatibility with the IBM XL compiler.
cannot be used with the ‘
’ option since the z/Architecture mode is not supported on these processor levels.
There is no