tree ff43de80c904feaed1d75a4d85ae7b4ae03dfe2b
parent 9ed583439947a5696fc91642afd25e1ff627b461
author Evgeniy Stepanov <eugeni.stepanov@gmail.com> 1510352868 +0000
committer Yi Kong <yikong@google.com> 1512509699 -0800

[asan] Use dynamic shadow on 32-bit Android.

Summary:
The following kernel change has moved ET_DYN base to 0x4000000 on arm32:
https://marc.info/?l=linux-kernel&m=149825162606848&w=2

Switch to dynamic shadow base to avoid such conflicts in the future.

Reserve shadow memory in an ifunc resolver, but don't use it in the instrumentation
until PR35221 is fixed. This will eventually let use save one load per function.

Reviewers: kcc

Subscribers: aemerson, srhines, kubamracek, kristof.beyls, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D39393

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317943 91177308-0d34-0410-b5e6-96231b3b80d8