libFuzzer, OpenBSD support

Summary:
- Enabling libfuzzer on OpenBSD
- OpenBSD can t support asan, msan ... the tests can t be run.

Patch by David CARLIER

Reviewers: eugenis, phosek, vitalybuka

Reviewed By: vitalybuka

Subscribers: srhines, mgorny, krytarowski, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44877

llvm-svn: 329631

8 files changed, 42 insertions, 10 deletions

diff --git a/compiler-rt/cmake/config-ix.cmake b/compiler-rt/cmake/config-ix.cmake
index 8d325799268..82c3d2859fd 100644
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@@ -613,7 +613,7 @@ else()
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON AND FUZZER_SUPPORTED_ARCH AND
-    OS_NAME MATCHES "Android|Darwin|Linux|NetBSD|FreeBSD|Fuchsia")
+    OS_NAME MATCHES "Android|Darwin|Linux|NetBSD|FreeBSD|OpenBSD|Fuchsia")
   set(COMPILER_RT_HAS_FUZZER TRUE)
 else()
   set(COMPILER_RT_HAS_FUZZER FALSE)
diff --git a/compiler-rt/lib/fuzzer/FuzzerDefs.h b/compiler-rt/lib/fuzzer/FuzzerDefs.h
index 6c53e6347b4..02e25f67384 100644
--- a/compiler-rt/lib/fuzzer/FuzzerDefs.h
+++ b/compiler-rt/lib/fuzzer/FuzzerDefs.h
@@ -28,6 +28,7 @@
 #define LIBFUZZER_LINUX 1
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #elif __APPLE__
 #define LIBFUZZER_APPLE 1
@@ -35,6 +36,7 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #elif __NetBSD__
 #define LIBFUZZER_APPLE 0
@@ -42,6 +44,7 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 1
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #elif __FreeBSD__
 #define LIBFUZZER_APPLE 0
@@ -49,6 +52,15 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 1
+#define LIBFUZZER_OPENBSD 0
+#define LIBFUZZER_WINDOWS 0
+#elif __OpenBSD__
+#define LIBFUZZER_APPLE 0
+#define LIBFUZZER_FUCHSIA 0
+#define LIBFUZZER_LINUX 0
+#define LIBFUZZER_NETBSD 0
+#define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 1
 #define LIBFUZZER_WINDOWS 0
 #elif _WIN32
 #define LIBFUZZER_APPLE 0
@@ -56,6 +68,7 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 1
 #elif __Fuchsia__
 #define LIBFUZZER_APPLE 0
@@ -63,6 +76,7 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #else
 #error "Support for your platform has not been implemented"
@@ -72,7 +86,9 @@
 #  define __has_attribute(x) 0
 #endif
 
-#define LIBFUZZER_POSIX (LIBFUZZER_APPLE || LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD)
+#define LIBFUZZER_POSIX                                                        \
+  (LIBFUZZER_APPLE || LIBFUZZER_LINUX || LIBFUZZER_NETBSD ||                   \
+   LIBFUZZER_FREEBSD || LIBFUZZER_OPENBSD)
 
 #ifdef __x86_64
 #  if __has_attribute(target)
diff --git a/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp b/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
index 7c47dfae312..a4e56fc27b8 100644
--- a/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
@@ -13,7 +13,8 @@
 // to clients right now.
 //===----------------------------------------------------------------------===//
 #include "FuzzerDefs.h"
-#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FUCHSIA || LIBFUZZER_FREEBSD
+#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FUCHSIA ||                \
+    LIBFUZZER_FREEBSD || LIBFUZZER_OPENBSD
 
 #include "FuzzerExtFunctions.h"
 #include "FuzzerIO.h"
@@ -51,4 +52,4 @@ ExternalFunctions::ExternalFunctions() {
 
 } // namespace fuzzer
 
-#endif // LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FUSCHIA || LIBFUZZER_FREEBSD
+#endif
diff --git a/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp b/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
index d98598ab2f3..c99cd89be29 100644
--- a/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
@@ -11,7 +11,8 @@
 
 #include "FuzzerDefs.h"
 
-#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD
+#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD ||                \
+    LIBFUZZER_OPENBSD
 __attribute__((weak)) extern uint8_t __start___libfuzzer_extra_counters;
 __attribute__((weak)) extern uint8_t __stop___libfuzzer_extra_counters;
 
diff --git a/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp b/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
index f8b5d11c534..c103fd230b0 100644
--- a/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
@@ -9,7 +9,8 @@
 // Misc utils for Linux.
 //===----------------------------------------------------------------------===//
 #include "FuzzerDefs.h"
-#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD
+#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD ||                \
+    LIBFUZZER_OPENBSD
 #include "FuzzerCommand.h"
 
 #include <stdlib.h>
@@ -23,4 +24,4 @@ int ExecuteCommand(const Command &Cmd) {
 
 } // namespace fuzzer
 
-#endif // LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD
+#endif
diff --git a/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp b/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
index cef6cec1ccb..bc64d329370 100644
--- a/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
@@ -118,7 +118,8 @@ size_t GetPeakRSSMb() {
   struct rusage usage;
   if (getrusage(RUSAGE_SELF, &usage))
     return 0;
-  if (LIBFUZZER_LINUX || LIBFUZZER_FREEBSD || LIBFUZZER_NETBSD) {
+  if (LIBFUZZER_LINUX || LIBFUZZER_FREEBSD || LIBFUZZER_NETBSD ||
+      LIBFUZZER_OPENBSD) {
     // ru_maxrss is in KiB
     return usage.ru_maxrss >> 10;
   } else if (LIBFUZZER_APPLE) {
diff --git a/compiler-rt/lib/fuzzer/afl/afl_driver.cpp b/compiler-rt/lib/fuzzer/afl/afl_driver.cpp
index 1d1c16a0f93..9f50dddc552 100644
--- a/compiler-rt/lib/fuzzer/afl/afl_driver.cpp
+++ b/compiler-rt/lib/fuzzer/afl/afl_driver.cpp
@@ -70,21 +70,31 @@ statistics from the file. If that fails then the process will quit.
 #define LIBFUZZER_APPLE 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #elif __APPLE__
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_APPLE 1
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #elif __NetBSD__
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_APPLE 0
 #define LIBFUZZER_NETBSD 1
 #define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 0
 #elif __FreeBSD__
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_APPLE 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 1
+#define LIBFUZZER_OPENBSD 0
+#elif __OpenBSD__
+#define LIBFUZZER_LINUX 0
+#define LIBFUZZER_APPLE 0
+#define LIBFUZZER_NETBSD 0
+#define LIBFUZZER_FREEBSD 0
+#define LIBFUZZER_OPENBSD 1
 #else
 #error "Support for your platform has not been implemented"
 #endif
@@ -133,7 +143,8 @@ size_t GetPeakRSSMb() {
   struct rusage usage;
   if (getrusage(RUSAGE_SELF, &usage))
     return 0;
-  if (LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD) {
+  if (LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD ||
+      LIBFUZZER_OPENBSD) {
     // ru_maxrss is in KiB
     return usage.ru_maxrss >> 10;
   } else if (LIBFUZZER_APPLE) {
diff --git a/compiler-rt/test/CMakeLists.txt b/compiler-rt/test/CMakeLists.txt
index fa2031a7b52..7e8f9edea5c 100644
--- a/compiler-rt/test/CMakeLists.txt
+++ b/compiler-rt/test/CMakeLists.txt
@@ -61,7 +61,8 @@ if(COMPILER_RT_CAN_EXECUTE_TESTS)
     compiler_rt_test_runtime(ubsan cfi)
     compiler_rt_test_runtime(sanitizer_common)
 
-    if(COMPILER_RT_BUILD_LIBFUZZER)
+    # OpenBSD not supporting asan, cannot run the tests
+    if(COMPILER_RT_BUILD_LIBFUZZER AND NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD")
       compiler_rt_test_runtime(fuzzer)
     endif()