tree 9174c0192992720b8f13db88618f6ec3e491b53e
parent 14545d4ce3dd446f20a14dcff37d60ff8d756f7a
author Mor-sarid, Nitzan <nitzan.mor-sarid@intel.com> 1441949496 +0000
committer Elliott Hughes <enh@google.com> 1442429113 -0700

Fix the way to get main thread stack start address.

For previous way to get the stack using the [stack] string from
/proc/self/task/<pid>/maps is not enough. On x86/x86_64, if an
alternative signal stack is used while a task switch happens,
the [stack] indicator may no longer be correct.

Instead, stack_start from /proc/self/stat which is always inside
the main stack, is used to find the main stack in /proc/self/maps.

Change-Id: Ieb010e71518b57560d541cd3b3563e5aa9660750
Signed-off-by: Nitzan Mor-sarid <nitzan.mor-sarid@intel.com>
Signed-off-by: Mingwei Shi <mingwei.shi@intel.com>