-//===-- SpecialCaseList.cpp - blacklist for sanitizers --------------------===//
+//===-- SpecialCaseList.cpp - special case list for sanitizers ------------===//
//
// The LLVM Compiler Infrastructure
//
//
// This is a utility class for instrumentation passes (like AddressSanitizer
// or ThreadSanitizer) to avoid instrumenting some functions or global
-// variables based on a user-supplied blacklist.
+// variables, or to instrument some functions or global variables in a specific
+// way, based on a user-supplied list.
//
//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Utils/SpecialCaseList.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
// Iterate through each line in the blacklist file.
SmallVector<StringRef, 16> Lines;
SplitString(MB->getBuffer(), Lines, "\n\r");
- StringMap<std::string> Regexps;
+ StringMap<StringMap<std::string> > Regexps;
for (SmallVectorImpl<StringRef>::iterator I = Lines.begin(), E = Lines.end();
I != E; ++I) {
// Ignore empty lines and lines starting with "#"
// Get our prefix and unparsed regexp.
std::pair<StringRef, StringRef> SplitLine = I->split(":");
StringRef Prefix = SplitLine.first;
- std::string Regexp = SplitLine.second;
- if (Regexp.empty()) {
+ if (SplitLine.second.empty()) {
// Missing ':' in the line.
report_fatal_error("malformed blacklist line: " + SplitLine.first);
}
+ std::pair<StringRef, StringRef> SplitRegexp = SplitLine.second.split("=");
+ std::string Regexp = SplitRegexp.first;
+ StringRef Category = SplitRegexp.second;
+
+ // Backwards compatibility.
+ if (Prefix == "global-init") {
+ Prefix = "global";
+ Category = "init";
+ } else if (Prefix == "global-init-type") {
+ Prefix = "type";
+ Category = "init";
+ } else if (Prefix == "global-init-src") {
+ Prefix = "src";
+ Category = "init";
+ }
+
// Replace * with .*
for (size_t pos = 0; (pos = Regexp.find("*", pos)) != std::string::npos;
pos += strlen(".*")) {
}
// Add this regexp into the proper group by its prefix.
- if (!Regexps[Prefix].empty())
- Regexps[Prefix] += "|";
- Regexps[Prefix] += Regexp;
+ if (!Regexps[Prefix][Category].empty())
+ Regexps[Prefix][Category] += "|";
+ Regexps[Prefix][Category] += "^" + Regexp + "$";
}
// Iterate through each of the prefixes, and create Regexs for them.
- for (StringMap<std::string>::const_iterator I = Regexps.begin(),
- E = Regexps.end(); I != E; ++I) {
- Entries[I->getKey()] = new Regex(I->getValue());
+ for (StringMap<StringMap<std::string> >::const_iterator I = Regexps.begin(),
+ E = Regexps.end();
+ I != E; ++I) {
+ for (StringMap<std::string>::const_iterator II = I->second.begin(),
+ IE = I->second.end();
+ II != IE; ++II) {
+ Entries[I->getKey()][II->getKey()] = new Regex(II->getValue());
+ }
}
}
-bool SpecialCaseList::isIn(const Function &F) const {
- return isIn(*F.getParent()) || inSection("fun", F.getName());
+SpecialCaseList::~SpecialCaseList() {
+ for (StringMap<StringMap<Regex*> >::iterator I = Entries.begin(),
+ E = Entries.end();
+ I != E; ++I) {
+ DeleteContainerSeconds(I->second);
+ }
}
-bool SpecialCaseList::isIn(const GlobalVariable &G) const {
- return isIn(*G.getParent()) || inSection("global", G.getName());
+bool SpecialCaseList::findCategory(const Function &F,
+ StringRef &Category) const {
+ return findCategory(*F.getParent(), Category) ||
+ findCategory("fun", F.getName(), Category);
}
-bool SpecialCaseList::isIn(const Module &M) const {
- return inSection("src", M.getModuleIdentifier());
+bool SpecialCaseList::isIn(const Function& F, const StringRef Category) const {
+ return isIn(*F.getParent(), Category) ||
+ inSectionCategory("fun", F.getName(), Category);
}
static StringRef GetGVTypeString(const GlobalVariable &G) {
return "<unknown type>";
}
-bool SpecialCaseList::isInInit(const GlobalVariable &G) const {
- return (isIn(*G.getParent()) ||
- inSection("global-init", G.getName()) ||
- inSection("global-init-type", GetGVTypeString(G)) ||
- inSection("global-init-src", G.getParent()->getModuleIdentifier()));
+bool SpecialCaseList::findCategory(const GlobalVariable &G,
+ StringRef &Category) const {
+ return findCategory(*G.getParent(), Category) ||
+ findCategory("global", G.getName(), Category) ||
+ findCategory("type", GetGVTypeString(G), Category);
+}
+
+bool SpecialCaseList::isIn(const GlobalVariable &G,
+ const StringRef Category) const {
+ return isIn(*G.getParent(), Category) ||
+ inSectionCategory("global", G.getName(), Category) ||
+ inSectionCategory("type", GetGVTypeString(G), Category);
+}
+
+bool SpecialCaseList::findCategory(const Module &M, StringRef &Category) const {
+ return findCategory("src", M.getModuleIdentifier(), Category);
+}
+
+bool SpecialCaseList::isIn(const Module &M, const StringRef Category) const {
+ return inSectionCategory("src", M.getModuleIdentifier(), Category);
+}
+
+bool SpecialCaseList::findCategory(const StringRef Section,
+ const StringRef Query,
+ StringRef &Category) const {
+ StringMap<StringMap<Regex *> >::const_iterator I = Entries.find(Section);
+ if (I == Entries.end()) return false;
+
+ for (StringMap<Regex *>::const_iterator II = I->second.begin(),
+ IE = I->second.end();
+ II != IE; ++II) {
+ Regex *FunctionRegex = II->getValue();
+ if (FunctionRegex->match(Query)) {
+ Category = II->first();
+ return true;
+ }
+ }
+
+ return false;
}
-bool SpecialCaseList::inSection(const StringRef Section,
- const StringRef Query) const {
- StringMap<Regex*>::const_iterator I = Entries.find(Section);
+bool SpecialCaseList::inSectionCategory(const StringRef Section,
+ const StringRef Query,
+ const StringRef Category) const {
+ StringMap<StringMap<Regex *> >::const_iterator I = Entries.find(Section);
if (I == Entries.end()) return false;
+ StringMap<Regex *>::const_iterator II = I->second.find(Category);
+ if (II == I->second.end()) return false;
- Regex *FunctionRegex = I->getValue();
+ Regex *FunctionRegex = II->getValue();
return FunctionRegex->match(Query);
}
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