[PATCH] D90483: [GWP-ASan] Fuchsia specific mapping & utilities functions

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad created this revision.
cryptoad added reviewers: hctim, eugenis, mcgrathr.
Herald added subscribers: Sanitizers, phosek, mgorny.
Herald added a project: Sanitizers.
cryptoad requested review of this revision.

This CL introduces the Fuchsia versions of the existing platform
specific functions.

For Fuchsia, we need to track the VMAR (https://fuchsia.dev/fuchsia-src/reference/kernel_objects/vm_address_region)
of the Guarded Pool mapping, and for this purpose I added some platform
specific data structure that remains empty on POSIX platforms.

`getThreadID` is not super useful for Fuchsia so it's just left as a
stub for now.

While testing the changes in my Fuchsia tree, I realized that
`guarded_pool_allocator_tls.h` should have closed the namespace before
including `GWP_ASAN_PLATFORM_TLS_HEADER`, otherwise drama ensues.

This was tested in g3, upstream LLVM, and Fuchsia (with local changes).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90483

Files:
  compiler-rt/lib/gwp_asan/CMakeLists.txt
  compiler-rt/lib/gwp_asan/guarded_pool_allocator.h
  compiler-rt/lib/gwp_asan/platform_specific/common_fuchsia.cpp
  compiler-rt/lib/gwp_asan/platform_specific/guarded_pool_allocator_fuchsia.cpp
  compiler-rt/lib/gwp_asan/platform_specific/guarded_pool_allocator_fuchsia.h
  compiler-rt/lib/gwp_asan/platform_specific/guarded_pool_allocator_posix.h
  compiler-rt/lib/gwp_asan/platform_specific/guarded_pool_allocator_tls.h
  compiler-rt/lib/gwp_asan/platform_specific/utilities_fuchsia.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D90483.301956.patch
Type: text/x-patch
Size: 10645 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20201030/6875b943/attachment.bin>