The IntReg type is 32 bits, and using it to cast the syscall return value is appropriate, but we're attempting to get rid of the ISA specific register types. Change-Id: I42496dd2cc086a6b718e1ce087fef81bb897d02f Reviewed-on: https://gem5-review.googlesource.com/c/13619 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>