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clang-p2996/compiler-rt/lib/gwp_asan/platform_specific/common_fuchsia.cpp
Kostya Kortchinsky 63ad087656 [GWP-ASan] Fuchsia specific mapping & utilities functions
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).

Differential Revision: https://reviews.llvm.org/D90483
2020-10-31 10:22:58 -07:00

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//===-- common_fuchsia.cpp --------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "gwp_asan/common.h"
namespace gwp_asan {
// This is only used for AllocationTrace.ThreadID and allocation traces are not
// yet supported on Fuchsia.
uint64_t getThreadID() { return kInvalidThreadID; }
} // namespace gwp_asan