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fix(INTER_RASM): fix to runtime/retsig global variable #17

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fix(INTER_RASM): fix to runtime/retsig global variable #17

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54 changes: 39 additions & 15 deletions passes/RASM.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -18,10 +18,8 @@
#include "Utils/Utils.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Passes/PassPlugin.h"
#include <list>
#include <map>
#include <iostream>
#include <fstream>

using namespace llvm;

#define DEBUG_TYPE "rasm-verify"
Expand All @@ -30,7 +28,7 @@ using namespace llvm;
* - 0: Disabled
* - 1: Enabled
*/
//#define INTRA_FUNCTION_CFC 1
#define INTRA_FUNCTION_CFC 1
#define INIT_SIGNATURE -0xDEAD // The same value has to be used as initializer for the signatures in the code

void RASM::initializeBlocksSignatures(Module &Md, std::map<BasicBlock*, int> &RandomNumberBBs, std::map<BasicBlock*, int> &SubRanPrevVals) {
Expand Down Expand Up @@ -343,19 +341,45 @@ PreservedAnalyses RASM::run(Module &Md, ModuleAnalysisManager &AM) {

#if (INTRA_FUNCTION_CFC == 1)
splitBBsAtCalls(Md);
GlobalVariable *RuntimeSig;
GlobalVariable *RetSig;
// find the global variables required for the runtime signatures
for (GlobalVariable &GV : Md.globals()) {
if (!isa<Function>(GV) && FuncAnnotations.find(&GV) != FuncAnnotations.end()) {
if ((FuncAnnotations.find(&GV))->second.starts_with("runtime_sig")) {
RuntimeSig = &GV;
}
else if ((FuncAnnotations.find(&GV))->second.starts_with("run_adj_sig")) {
RetSig = &GV;
GlobalVariable *RuntimeSig ;
GlobalVariable *RetSig ;

{
bool initialized_runtimesig = false;
bool initialized_retsig = false;

// find the global variables required for the runtime signatures
for (GlobalVariable &GV : Md.globals()) {
if (!isa<Function>(GV) && FuncAnnotations.find(&GV) != FuncAnnotations.end()) {
if ((FuncAnnotations.find(&GV))->second.starts_with("runtime_sig")) {
RuntimeSig = &GV;
initialized_runtimesig = true;
} else if ((FuncAnnotations.find(&GV))->second.starts_with("run_adj_sig")) {
RetSig = &GV;
initialized_retsig = true;
}
}
}
}

if (!initialized_runtimesig) {
RuntimeSig = new GlobalVariable(
Md, IntType, /*isConstant=*/false,
GlobalVariable::ExternalLinkage,
ConstantInt::get(IntType, INIT_SIGNATURE),
"runtime_sig"
);
}

if (!initialized_retsig) {
RetSig = new GlobalVariable(
Md, IntType, /*isConstant=*/false,
GlobalVariable::ExternalLinkage,
ConstantInt::get(IntType, INIT_SIGNATURE),
"run_adj_sig"
);
}
}

#endif

initializeBlocksSignatures(Md, RandomNumberBBs, SubRanPrevVals);
Expand Down