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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2017-11-10 22:27:48 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2017-11-10 22:27:48 +0000 |
| commit | 8357d02f2d4f6c22202fb25f3b4c97fb2b893ec9 (patch) | |
| tree | 0d96828a1cf600d29c8d473da77d633ec7b166c5 /lib/sanitizer_common/sanitizer_mac.cc | |
| parent | 55dee3e7a884bf78e0f8932ff7eaac6f614866fa (diff) | |
[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/compiler-rt/trunk@317943 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/sanitizer_common/sanitizer_mac.cc')
| -rw-r--r-- | lib/sanitizer_common/sanitizer_mac.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_mac.cc b/lib/sanitizer_common/sanitizer_mac.cc index 284b6cfc7..195a52c47 100644 --- a/lib/sanitizer_common/sanitizer_mac.cc +++ b/lib/sanitizer_common/sanitizer_mac.cc @@ -864,6 +864,10 @@ uptr GetMaxUserVirtualAddress() { #endif // SANITIZER_WORDSIZE } +uptr GetMaxVirtualAddress() { + return GetMaxUserVirtualAddress(); +} + uptr FindAvailableMemoryRange(uptr shadow_size, uptr alignment, uptr left_padding, |