9802089e13
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
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
//===- FuzzerExtraCounters.cpp - Extra coverage counters ------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
// Extra coverage counters defined by user code.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "FuzzerDefs.h"
|
|
|
|
#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;
|
|
|
|
namespace fuzzer {
|
|
uint8_t *ExtraCountersBegin() { return &__start___libfuzzer_extra_counters; }
|
|
uint8_t *ExtraCountersEnd() { return &__stop___libfuzzer_extra_counters; }
|
|
ATTRIBUTE_NO_SANITIZE_ALL
|
|
void ClearExtraCounters() { // hand-written memset, don't asan-ify.
|
|
uintptr_t *Beg = reinterpret_cast<uintptr_t*>(ExtraCountersBegin());
|
|
uintptr_t *End = reinterpret_cast<uintptr_t*>(ExtraCountersEnd());
|
|
for (; Beg < End; Beg++) {
|
|
*Beg = 0;
|
|
__asm__ __volatile__("" : : : "memory");
|
|
}
|
|
}
|
|
|
|
} // namespace fuzzer
|
|
|
|
#else
|
|
// TODO: implement for other platforms.
|
|
namespace fuzzer {
|
|
uint8_t *ExtraCountersBegin() { return nullptr; }
|
|
uint8_t *ExtraCountersEnd() { return nullptr; }
|
|
void ClearExtraCounters() {}
|
|
} // namespace fuzzer
|
|
|
|
#endif
|