Tools using shadow memory can't handle the first 64KB being mapped, because
they rely on this area being unmapped for their quick sanity check.  This
commit make Valgrind refuse to mmap() this area.  Added a regtest for it.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2085 a5019735-40e9-0310-863c-91ae7b9d1cf9
5 files changed