lib/std/os/linux.zig       |  50 ++++++
 lib/std/os/linux/s390x.zig | 276 ++++++++++++++++++++++++++++++++
 test/behavior/basic.zig    |   1 +
 test/behavior/union.zig    |   1 +
 test/behavior/var_args.zig |   5 +
 5 files changed, 333 insertions(+)