18 lines
701 B
Plaintext
18 lines
701 B
Plaintext
Add a clang pass that identifies potential ROP gadgets and replaces ROP
|
|
friendly instructions with safe alternatives. This initial commit fixes
|
|
3 instruction forms that will lower to include a c3 (return) byte.
|
|
Additional problematic instructions can be fixed incrementally using
|
|
this framework.
|
|
|
|
Index: lib/Target/X86/X86TargetMachine.cpp
|
|
--- lib/Target/X86/X86TargetMachine.cpp.orig
|
|
+++ lib/Target/X86/X86TargetMachine.cpp
|
|
@@ -546,6 +546,7 @@ void X86PassConfig::addPreEmitPass() {
|
|
addPass(createX86EvexToVexInsts());
|
|
addPass(createX86DiscriminateMemOpsPass());
|
|
addPass(createX86InsertPrefetchPass());
|
|
+ addPass(createX86FixupGadgetsPass());
|
|
addPass(createX86InsertX87waitPass());
|
|
}
|
|
|