llvm-project

Commit Graph

Author	SHA1	Message	Date
Anna Zaks	cad7994c3b	[safestack] Make sure the unsafe stack pointer is popped in all cases The unsafe stack pointer is only popped in moveStaticAllocasToUnsafeStack so it won't happen if there are no static allocas. Fixes https://llvm.org/bugs/show_bug.cgi?id=26122 Differential Revision: http://reviews.llvm.org/D16339 llvm-svn: 259447	2016-02-02 01:03:11 +00:00
Evgeniy Stepanov	8685daf23e	[safestack] Fix compiler crash in the presence of stack restores. A use can be emitted before def in a function with stack restore points but no static allocas. llvm-svn: 248455	2015-09-24 01:23:51 +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

Author

SHA1

Message

Date

Anna Zaks

cad7994c3b

[safestack] Make sure the unsafe stack pointer is popped in all cases

The unsafe stack pointer is only popped in moveStaticAllocasToUnsafeStack so it won't happen if there are no static allocas.

Fixes https://llvm.org/bugs/show_bug.cgi?id=26122

Differential Revision: http://reviews.llvm.org/D16339

llvm-svn: 259447

2016-02-02 01:03:11 +00:00

Evgeniy Stepanov

8685daf23e

[safestack] Fix compiler crash in the presence of stack restores.

A use can be emitted before def in a function with stack restore
points but no static allocas.

llvm-svn: 248455

2015-09-24 01:23:51 +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

3 Commits