1 files changed, 43 insertions, 0 deletions
diff --git a/src/Dolphin/db.c b/src/Dolphin/db.c
new file mode 100644
index 0000000..bcf8534
--- /dev/null
+++ b/src/Dolphin/db.c
@@ -0,0 +1,43 @@
+#include <dolphin/db.h>
+#include <dolphin/os.h>
+
+DBInterface* __DBInterface = NULL;
+int DBVerbose;
+
+extern void __DBExceptionStart();
+extern void __DBExceptionEnd();
+extern void __DBExceptionSetNumber();
+
+void DBInit(void) {
+  __DBInterface = (DBInterface*)OSPhysicalToCached(OS_DBINTERFACE_ADDR);
+  __DBInterface->ExceptionDestination = (void (*)())OSCachedToPhysical(__DBExceptionDestination);
+  DBVerbose = TRUE;
+}
+
+void __DBExceptionDestinationAux(void) {
+  u32* contextAddr = (void*)0x00C0;
+  OSContext* context = (OSContext*)OSPhysicalToCached(*contextAddr);
+
+  OSReport("DBExceptionDestination\n");
+  OSDumpContext(context);
+  PPCHalt();
+}
+
+/* clang-format off */
+asm void __DBExceptionDestination(void) {
+    nofralloc
+    mfmsr       r3
+    ori         r3, r3, 0x10|0x20
+    mtmsr       r3
+
+    b __DBExceptionDestinationAux
+}
+/* clang-format on */
+
+BOOL __DBIsExceptionMarked(__OSException exception) {
+  u32 mask = 1 << exception;
+
+  return (BOOL)(__DBInterface->exceptionMask & mask);
+}
+
+void DBPrintf(char* format, ...) {}