Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Use debug info for func args #1183

Merged
merged 3 commits into from
Aug 3, 2023
Merged

Use debug info for func args #1183

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
d9ec830
frontend: llvm: catch arg names using debug info
DavidKorczynski Aug 3, 2023
8304bed
nit
DavidKorczynski Aug 3, 2023
cca2d90
output argNames to summary.json
DavidKorczynski Aug 3, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
30 changes: 29 additions & 1 deletion frontends/llvm/lib/Transforms/FuzzIntrospector/FuzzIntrospector.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1067,9 +1067,37 @@ FuzzerFunctionWrapper FuzzIntrospector::wrapFunction(Function *F) {
FuncWrap.ReturnType = resolveTypeName(F->getReturnType());

// Arguments
// errs() << "Function:\n";
// errs() << FuncWrap.FunctionName << "\n";
for (auto &A : F->args()) {
FuncWrap.ArgTypes.push_back(resolveTypeName(A.getType()));
FuncWrap.ArgNames.push_back(A.getName().str());
//FuncWrap.ArgNames.push_back(A.getName().str());
if (A.getName().str().empty()) {
const DILocalVariable* Var = NULL;
bool FoundArg = false;
for (auto &BB : *F) {
for (auto &I : BB) {
if (const DbgDeclareInst* DbgDeclare = dyn_cast<DbgDeclareInst>(&I)) {
if (auto DLV = dyn_cast<DILocalVariable>(DbgDeclare->getVariable())) {
if ( DLV->getArg() == A.getArgNo() + 1 &&
!DLV->getName().empty() &&
DLV->getScope()->getSubprogram() == F->getSubprogram()) {
//errs() << "--" << DLV->getName().str() << "\n";
FuncWrap.ArgNames.push_back(DLV->getName().str());
FoundArg = true;
}
}
}
}
}
if (FoundArg == false) {
FuncWrap.ArgNames.push_back("");
}
}
else {
// It's non empty, we just push that.
FuncWrap.ArgNames.push_back(A.getName().str());
}
}

// Log the amount of basic blocks, instruction count and cyclomatic
Expand Down
1 change: 1 addition & 0 deletions src/fuzz_introspector/html_report.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,7 @@ def create_all_function_table(
json_copy = row_element.copy()
json_copy['Func name'] = demangled_func_name
json_copy['Args'] = str(fd.arg_types)
json_copy['ArgNames'] = fd.arg_names
json_copy['Reached by Fuzzers'] = fd.reached_by_fuzzers
json_copy['return_type'] = fd.return_type
json_copy['raw-function-name'] = fd.raw_function_name
Expand Down
Loading