Bugfix to macros in Hdr:CPU.Generic32
Ben Avison authored
Detail:
  A number of these macros, when build targeting all CPUs (e.g. in disc builds)
  only worked correctly if a register was specified to leave the original
  PSR state in.
Admin:
  Untested, but no risk to ROM builds.

Version 2.28. Tagged as 'HdrSrc-2_28'
7a505e55