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5 Commits

Author SHA1 Message Date
David L Kreitzer d5c6755d83 [safestack] Use non-thread-local unsafe stack pointer for Contiki OS 
Patch by Michael LeMay

Differential revision: http://reviews.llvm.org/D19852

llvm-svn: 284254
 2016-10-14 17:56:00 +00:00
David L Kreitzer d9ca3589de [safestack] Move X86-targeted tests into the X86 subdirectory. 
Patch by Michael LeMay

Differential revision: http://reviews.llvm.org/D25340

llvm-svn: 284139
 2016-10-13 17:51:59 +00:00
Evgeniy Stepanov f17120a85f [safestack] Add canary to unsafe stack frames 
Add StackProtector to SafeStack. This adds limited protection against
data corruption in the caller frame. Current implementation treats
all stack protector levels as -fstack-protector-all.

llvm-svn: 266004
 2016-04-11 22:27:48 +00:00
Evgeniy Stepanov d3f544f271 [safestack] Fix a stupid mix-up in the direct-tls code path. 
llvm-svn: 248863
 2015-09-30 00:01:47 +00:00
Evgeniy Stepanov a2002b08f7 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.

llvm-svn: 248405
 2015-09-23 18:07:56 +00:00