[PATCH] D12952: Android support for SafeStack

[Evgeniy Stepanov via llvm-commits]

eugenis created this revision.
eugenis added reviewers: pcc, echristo.
eugenis added a subscriber: llvm-commits.
eugenis set the repository for this revision to rL LLVM.
Herald added subscribers: srhines, danalbert, tberghammer, aemerson.

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).


Repository:
  rL LLVM

http://reviews.llvm.org/D12952

Files:
  include/llvm/LinkAllPasses.h
  include/llvm/Target/TargetLowering.h
  include/llvm/Transforms/Instrumentation.h
  lib/CodeGen/Passes.cpp
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  lib/Target/X86/X86Subtarget.h
  lib/Transforms/Instrumentation/SafeStack.cpp
  test/Transforms/SafeStack/abi.ll

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