Unable to raise arm binary containing an array

[Doppel16]

I have successfully been able to crosscompile simple c files to arm with arm-linux-gnueabi-gcc, and raising those binaries using mctoll. However now that I try a file containing the following lines with an array:

int main() {
  int array1[4];
  return 0;
}

I get the following error when using the same compiler (arm-linux-gnueabi-gcc):

llvm-mctoll: /home/mctoll/llvm-project/llvm/tools/llvm-mctoll/ARM/ARMMIRevising.cpp:500: void ARMMIRevising::addressPCRelativeData(llvm::MachineInstr&): Assertion `GlobVal && "A not addressed pc-relative data!"' failed.

When I looked through some of the mctoll tests in the repository I saw some arrays being declared and used so I thought raising those instructions wouldn't be a problem, so I imagine there is something I should do differently to fix my issue.

I also tried using a different compiler, and with the compiler arm-linux-gnueabihf-gcc I got a different error:

**** Warning: Failed to decode instruction
598: 01 d0 ff f7
llvm-mctoll: /home/mctoll/llvm-project/llvm/tools/llvm-mctoll/ARM/DAG/DAGRaisingInfo.cpp:23: llvm::Value* DAGRaisingInfo::getRealValue(llvm::SDNode*): Assertion `NPMap[Node] != nullptr && "Cannot find the corresponding node proprety!"' failed.

[bharadwajy]

Thanks for your interest in the project.

Unfortunately, support to raise ARM binaries has lagged behind as most of my (and other contributors') focus has been on raising x64 binaries in the recent past.

I would certainly appreciate any help with bringing support to raise ARM binaries at least on par with that of existing x64 raising.

[Doppel16]

Thank you for the quick reply! So just to be clear, mctoll does currently not support raising ARM binaries from programs with arrays?

[bharadwajy]

Correct.