Helgrind needs to know the soname of ld.so, and on arm64-linux
it is different (ld-linux-aarch64.so.1) from all other targets.
(Why?)  This makes Helgrind at least somewhat usable on arm64-linux.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14396 a5019735-40e9-0310-863c-91ae7b9d1cf9
Fix (kludge) stack unwinding through clone on arm64-linux.  This is
the same problem as shown in #338681, except for arm64-linux instead
of x86-linux.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14397 a5019735-40e9-0310-863c-91ae7b9d1cf9
Bug 338681 Enable clone backtrace hack for i386-linux in helgrind.

glibc doesn't provide CFI unwind information right after the clone call
(because it would be invalid in the child). Enable the same workaround
for i386-linux that is already used for amd64-linux (subtract 3 from ip).

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14398 a5019735-40e9-0310-863c-91ae7b9d1cf9