PatchEngine: check instruction at link addr is non-zero

Regression introduced in #4738. Fixes https://bugs.dolphin-emu.org/issues/10110.
2017-02-22 20:12:19 -08:00 · 2017-02-22 20:12:19 -08:00 · da35abbbe2
parent 9b0ce31906
commit da35abbbe2
1 changed files with 2 additions and 1 deletions
--- a/Source/Core/Core/PatchEngine.cpp
+++ b/Source/Core/Core/PatchEngine.cpp
@ -223,7 +223,8 @@ static bool IsStackSane()
    return false;

  // Check the link register makes sense (that it points to a valid IBAT address)
-  return PowerPC::HostIsInstructionRAMAddress(PowerPC::HostRead_U32(next_SP + 4));
+  const u32 address = PowerPC::HostRead_U32(next_SP + 4);
+  return PowerPC::HostIsInstructionRAMAddress(address) && 0 != PowerPC::HostRead_U32(address);
 }

 bool ApplyFramePatches()