diff options
| author | Alex Shlyapnikov <alekseys@google.com> | 2018-04-20 20:04:04 +0000 |
|---|---|---|
| committer | Alex Shlyapnikov <alekseys@google.com> | 2018-04-20 20:04:04 +0000 |
| commit | 99cf54baa65e03e027da5b6b928eec2759398056 (patch) | |
| tree | f4fcdfe112bad87359db9b95440f59b93755572b /llvm/tools/llvm-objcopy/Object.cpp | |
| parent | c3ec1643f186e6c2a3ae20bc9d9d01858a857152 (diff) | |
| download | bcm5719-llvm-99cf54baa65e03e027da5b6b928eec2759398056.tar.gz bcm5719-llvm-99cf54baa65e03e027da5b6b928eec2759398056.zip | |
[HWASan] Introduce non-zero based and dynamic shadow memory (LLVM).
Summary:
Support the dynamic shadow memory offset (the default case for user
space now) and static non-zero shadow memory offset
(-hwasan-mapping-offset option). Keeping the the latter case around
for functionality and performance comparison tests (and mostly for
-hwasan-mapping-offset=0 case).
The implementation is stripped down ASan one, picking only the relevant
parts in the following assumptions: shadow scale is fixed, the shadow
memory is dynamic, it is accessed via ifunc global, shadow memory address
rematerialization is suppressed.
Keep zero-based shadow memory for kernel (-hwasan-kernel option) and
calls instreumented case (-hwasan-instrument-with-calls option), which
essentially means that the generated code is not changed in these cases.
Reviewers: eugenis
Subscribers: srhines, llvm-commits
Differential Revision: https://reviews.llvm.org/D45840
llvm-svn: 330475
Diffstat (limited to 'llvm/tools/llvm-objcopy/Object.cpp')
0 files changed, 0 insertions, 0 deletions
