Add support for stack unwinding using the ARM32 specific EXIDX format.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14217 a5019735-40e9-0310-863c-91ae7b9d1cf9
cfsi_m_ix array should only be indexed according to sizeof_m_ix,
so decalre as a void*.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14218 a5019735-40e9-0310-863c-91ae7b9d1cf9
arm64: fix the conversion from/to VEX fpsr to/from GDB representation



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14219 a5019735-40e9-0310-863c-91ae7b9d1cf9
take endianness into account in arm64 fpsr xfer,
use VKI_LITTLE_ENDIAN to decide to reverse or not bytes in image function


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14223 a5019735-40e9-0310-863c-91ae7b9d1cf9
ensure the regcache is in sync with the fpsr part VEX represents
when fpsr is modified from gdb


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14225 a5019735-40e9-0310-863c-91ae7b9d1cf9
Allow no debuginfo to be found when (trying to) produce the help msg
for activating the host visibility in gdbsrv


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14227 a5019735-40e9-0310-863c-91ae7b9d1cf9