Android support for SafeStack.

Description

Android support for SafeStack.

Add two new ways of accessing the unsafe stack pointer:

  • At a fixed offset from the thread TLS base. This is very similar to StackProtector cookies, but we plan to extend it to other backends (ARM in particular) soon. Bionic-side implementation here: https://android-review.googlesource.com/170988.
  • Via a function call, as a fallback for platforms that provide neither a fixed TLS slot, nor a reasonable TLS implementation (i.e. not emutls).

This is a re-commit of a change in r248357 that was reverted in
r248358.

Details

Committed
eugenisSep 23 2015, 11:07 AM
Parents
rL248404: move call to convertIntLogicToFPLogic up; NFCI
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