[compiler-rt] r360710 - [GWP-ASan] Initial build files, implementation of PRNG [1].
Mitch Phillips via llvm-commits
llvm-commits at lists.llvm.org
Tue May 14 14:43:11 PDT 2019
Author: hctim
Date: Tue May 14 14:43:11 2019
New Revision: 360710
URL: http://llvm.org/viewvc/llvm-project?rev=360710&view=rev
Log:
[GWP-ASan] Initial build files, implementation of PRNG [1].
Summary:
See D60593 for further information.
This patch slices off the PRNG implementation and the initial build files for GWP-ASan.
Reviewers: vlad.tsyrklevich, morehouse, vitalybuka
Reviewed By: morehouse
Subscribers: srhines, kubamracek, mgorny, #sanitizers, llvm-commits, cryptoad, eugenis
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D61867
Added:
compiler-rt/trunk/lib/gwp_asan/
compiler-rt/trunk/lib/gwp_asan/CMakeLists.txt
compiler-rt/trunk/lib/gwp_asan/random.cpp
compiler-rt/trunk/lib/gwp_asan/random.h
compiler-rt/trunk/test/gwp_asan/
compiler-rt/trunk/test/gwp_asan/CMakeLists.txt
Modified:
compiler-rt/trunk/cmake/config-ix.cmake
Modified: compiler-rt/trunk/cmake/config-ix.cmake
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/cmake/config-ix.cmake?rev=360710&r1=360709&r2=360710&view=diff
==============================================================================
--- compiler-rt/trunk/cmake/config-ix.cmake (original)
+++ compiler-rt/trunk/cmake/config-ix.cmake Tue May 14 14:43:11 2019
@@ -246,6 +246,7 @@ else()
set(ALL_FUZZER_SUPPORTED_ARCH ${X86_64} ${ARM64})
endif()
+set(ALL_GWP_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM64} ${ARM32})
if(APPLE)
set(ALL_LSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${MIPS64} ${ARM64})
else()
@@ -445,6 +446,9 @@ if(APPLE)
list_intersect(DFSAN_SUPPORTED_ARCH
ALL_DFSAN_SUPPORTED_ARCH
SANITIZER_COMMON_SUPPORTED_ARCH)
+ list_intersect(GWP_ASAN_SUPPORTED_ARCH
+ ALL_GWP_ASAN_SUPPORTED_ARCH
+ SANITIZER_COMMON_SUPPORTED_ARCH)
list_intersect(LSAN_SUPPORTED_ARCH
ALL_LSAN_SUPPORTED_ARCH
SANITIZER_COMMON_SUPPORTED_ARCH)
@@ -513,6 +517,7 @@ else()
filter_available_targets(XRAY_SUPPORTED_ARCH ${ALL_XRAY_SUPPORTED_ARCH})
filter_available_targets(SHADOWCALLSTACK_SUPPORTED_ARCH
${ALL_SHADOWCALLSTACK_SUPPORTED_ARCH})
+ filter_available_targets(GWP_ASAN_SUPPORTED_ARCH ${ALL_GWP_ASAN_SUPPORTED_ARCH})
endif()
if (MSVC)
@@ -534,7 +539,7 @@ if(COMPILER_RT_SUPPORTED_ARCH)
endif()
message(STATUS "Compiler-RT supported architectures: ${COMPILER_RT_SUPPORTED_ARCH}")
-set(ALL_SANITIZERS asan;dfsan;msan;hwasan;tsan;safestack;cfi;scudo;ubsan_minimal)
+set(ALL_SANITIZERS asan;dfsan;msan;hwasan;tsan;safestack;cfi;scudo;ubsan_minimal;gwp_asan)
set(COMPILER_RT_SANITIZERS_TO_BUILD all CACHE STRING
"sanitizers to build if supported on the target (all;${ALL_SANITIZERS})")
list_replace(COMPILER_RT_SANITIZERS_TO_BUILD all "${ALL_SANITIZERS}")
@@ -678,3 +683,13 @@ if (COMPILER_RT_HAS_SANITIZER_COMMON AND
else()
set(COMPILER_RT_HAS_SHADOWCALLSTACK FALSE)
endif()
+
+# Note: Fuchsia and Windows are not currently supported by GWP-ASan. Support
+# is planned for these platforms. Darwin is also not supported due to TLS
+# calling malloc on first use.
+if (GWP_ASAN_SUPPORTED_ARCH AND OS_NAME MATCHES "Android|Linux")
+ set(COMPILER_RT_HAS_GWP_ASAN TRUE)
+else()
+ set(COMPILER_RT_HAS_GWP_ASAN FALSE)
+endif()
+pythonize_bool(COMPILER_RT_HAS_GWP_ASAN)
Added: compiler-rt/trunk/lib/gwp_asan/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/gwp_asan/CMakeLists.txt?rev=360710&view=auto
==============================================================================
--- compiler-rt/trunk/lib/gwp_asan/CMakeLists.txt (added)
+++ compiler-rt/trunk/lib/gwp_asan/CMakeLists.txt Tue May 14 14:43:11 2019
@@ -0,0 +1,36 @@
+add_compiler_rt_component(gwp_asan)
+
+include_directories(..)
+
+set(GWP_ASAN_SOURCES
+ random.cpp
+)
+
+set(GWP_ASAN_HEADERS
+ random.h
+)
+
+# Disable RTTI and exception support, as we want these libraries to be
+# C-compatible. Regular C source files can be linked against the generated
+# GwpAsan libraries using the Clang C compiler.
+set(GWP_ASAN_CFLAGS -fno-rtti -fno-exceptions)
+
+if (COMPILER_RT_HAS_GWP_ASAN)
+ foreach(arch ${GWP_ASAN_SUPPORTED_ARCH})
+ add_compiler_rt_runtime(
+ clang_rt.gwp_asan
+ STATIC
+ ARCHS ${arch}
+ SOURCES ${GWP_ASAN_SOURCES}
+ ADDITIONAL_HEADERS ${GWP_ASAN_HEADERS}
+ CFLAGS ${GWP_ASAN_CFLAGS}
+ PARENT_TARGET gwp_asan
+ )
+ endforeach()
+
+ add_compiler_rt_object_libraries(RTGwpAsan
+ ARCHS ${GWP_ASAN_SUPPORTED_ARCH}
+ SOURCES ${GWP_ASAN_SOURCES}
+ ADDITIONAL_HEADERS ${GWP_ASAN_HEADERS}
+ CFLAGS ${GWP_ASAN_CFLAGS})
+endif()
Added: compiler-rt/trunk/lib/gwp_asan/random.cpp
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/gwp_asan/random.cpp?rev=360710&view=auto
==============================================================================
--- compiler-rt/trunk/lib/gwp_asan/random.cpp (added)
+++ compiler-rt/trunk/lib/gwp_asan/random.cpp Tue May 14 14:43:11 2019
@@ -0,0 +1,21 @@
+//===-- random.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/random.h"
+
+#include <ctime>
+
+namespace gwp_asan {
+uint32_t getRandomUnsigned32() {
+ thread_local uint32_t RandomState = static_cast<uint64_t>(time(nullptr));
+ RandomState ^= RandomState << 13;
+ RandomState ^= RandomState >> 17;
+ RandomState ^= RandomState << 5;
+ return RandomState;
+}
+} // namespace gwp_asan
Added: compiler-rt/trunk/lib/gwp_asan/random.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/gwp_asan/random.h?rev=360710&view=auto
==============================================================================
--- compiler-rt/trunk/lib/gwp_asan/random.h (added)
+++ compiler-rt/trunk/lib/gwp_asan/random.h Tue May 14 14:43:11 2019
@@ -0,0 +1,20 @@
+//===-- random.h ------------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef GWP_ASAN_RANDOM_H_
+#define GWP_ASAN_RANDOM_H_
+
+#include <cstdint>
+
+namespace gwp_asan {
+// xorshift (32-bit output), extremely fast PRNG that uses arithmetic operations
+// only. Seeded using walltime.
+uint32_t getRandomUnsigned32();
+} // namespace gwp_asan
+
+#endif // GWP_ASAN_RANDOM_H_
Added: compiler-rt/trunk/test/gwp_asan/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/gwp_asan/CMakeLists.txt?rev=360710&view=auto
==============================================================================
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