diff options
Diffstat (limited to 'instrumentation/afl-llvm-lto-instrumentation.so.cc')
| -rw-r--r-- | instrumentation/afl-llvm-lto-instrumentation.so.cc | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/instrumentation/afl-llvm-lto-instrumentation.so.cc b/instrumentation/afl-llvm-lto-instrumentation.so.cc index b5fdb3d6..fe43fbe5 100644 --- a/instrumentation/afl-llvm-lto-instrumentation.so.cc +++ b/instrumentation/afl-llvm-lto-instrumentation.so.cc @@ -93,8 +93,8 @@ class AFLLTOPass : public ModulePass { uint32_t function_minimum_size = 1; uint32_t inst_blocks = 0, inst_funcs = 0, total_instr = 0; unsigned long long int map_addr = 0x10000; - const char *skip_nozero = NULL; - const char *use_threadsafe_counters = nullptr; + const char * skip_nozero = NULL; + const char * use_threadsafe_counters = nullptr; }; @@ -843,9 +843,12 @@ bool AFLLTOPass::runOnModule(Module &M) { /* Update bitmap */ if (use_threadsafe_counters) { + IRB.CreateAtomicRMW(llvm::AtomicRMWInst::BinOp::Add, MapPtrIdx, One, llvm::AtomicOrdering::Monotonic); + } else { + LoadInst *Counter = IRB.CreateLoad(MapPtrIdx); Counter->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None)); @@ -861,7 +864,9 @@ bool AFLLTOPass::runOnModule(Module &M) { } IRB.CreateStore(Incr, MapPtrIdx) - ->setMetadata(M.getMDKindID("nosanitize"), MDNode::get(C, None)); + ->setMetadata(M.getMDKindID("nosanitize"), + MDNode::get(C, None)); + } // done :) |