StarletBootstrapProbe: --mmu-faults

Enables the ARM926 MMU aborts of ARMCore (SetMMUFaultsEnabled) for the
run. Without the option the probe behaves as before.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Tools/StarletBootstrapProbe/StarletBootstrapProbe.cpp

@@ -40,7 +40,7 @@ bool FailOnAlert(const char* caption, const char* text, bool, Common::MsgType)
   std::_Exit(ALERT_EXIT_STATUS);
 }
 
-bool Run(const std::string& path, bool jit, ExpectedOutcome expected)
+bool Run(const std::string& path, bool jit, bool mmu_faults, ExpectedOutcome expected)
 {
   std::ifstream file(path, std::ios::binary | std::ios::ate);
   if (!file || file.tellg() <= 0 || file.tellg() > 16 * 1024 * 1024)
@@ -74,6 +74,8 @@ bool Run(const std::string& path, bool jit, ExpectedOutcome expected)
   core.SetJitEnabled(jit);
   core.Reset(info.entry);
   core.SetBigEndian(true);
+  // StarOS MMU-001: translation, domain, permission and alignment aborts (off by default).
+  core.SetMMUFaultsEnabled(mmu_faults);
   constexpr u32 TRACE_MAGIC = 0x52455631;
   constexpr u32 TRACE_CAPACITY = 1024;
   for (int slice = 0; slice < 512; ++slice)
@@ -148,13 +150,14 @@ bool Run(const std::string& path, bool jit, ExpectedOutcome expected)
 int main(int argc, char** argv)
 {
   Common::RegisterMsgAlertHandler(FailOnAlert);
-  if (argc < 2 || argc > 4)
+  if (argc < 2 || argc > 5)
   {
-    std::cerr << "Usage: StarletBootstrapProbe <ELF> [--jit] "
+    std::cerr << "Usage: StarletBootstrapProbe <ELF> [--jit] [--mmu-faults] "
                  "[--expect-panic|--expect-fatal-data|--expect-undefined-fault|--expect-phase2]\n";
     return 2;
   }
   bool jit = false;
+  bool mmu_faults = false;
   ExpectedOutcome expected = ExpectedOutcome::Idle;
   bool outcome_selected = false;
   for (int index = 2; index < argc; ++index)
@@ -162,6 +165,8 @@ int main(int argc, char** argv)
     const std::string_view option = argv[index];
     if (option == "--jit")
       jit = true;
+    else if (option == "--mmu-faults")
+      mmu_faults = true;
     else if (option == "--expect-panic" || option == "--expect-fatal-data" ||
              option == "--expect-undefined-fault" || option == "--expect-phase2")
     {
@@ -189,7 +194,7 @@ int main(int argc, char** argv)
   auto& system = Core::System::GetInstance();
   system.SetIsWii(true);
   system.GetMemory().Init();
-  const bool passed = Run(argv[1], jit, expected);
+  const bool passed = Run(argv[1], jit, mmu_faults, expected);
   system.GetMemory().Shutdown();
   return passed ? 0 : 1;
 }