switcher: Fix invalid use of memcpy() on I/O memory

The size and order etc. of memory accesses performed by memcpy() is
undefined, so we can't make valid use of it to save and restore
peripheral registers which don't implement full memory-like
semantics, except as may be permitted by luck.

In praticular, the GIC rejects byte accesses to its registers,
whereas it is entirely valid for memcpy() to perform byte accesses.

This patch replaces the invalid use of memcpy() for GIC
save/restore with trivial dedicated functions which preform
volatile word accesses only.

0 files changed, 0 insertions, 0 deletions