Match and link db

Former-commit-id: 2806b45058

Makefile

@@ -151,6 +151,8 @@ $(DTK_FILES): MWCC_VERSION := 1.2.5
 $(DTK_FILES): CFLAGS := $(CFLAGS_BASE)
 $(SI_FILES): MWCC_VERSION := 1.2.5
 $(SI_FILES): CFLAGS := $(CFLAGS_BASE)
+$(DB_FILES): MWCC_VERSION := 1.2.5
+$(DB_FILES): CFLAGS := $(CFLAGS_BASE)
 
 #-------------------------------------------------------------------------------
 # Recipes

configure.py

@@ -731,7 +731,9 @@ LIBS = [
         "lib": "db",
         "mwcc_version": "1.2.5",
         "cflags": "$cflags_base",
-        "objects": ["Dolphin/db"],
+        "objects": [
+            ["Dolphin/db", True],
+        ],
     },
     {
         "lib": "dsp",

include/dolphin/db.h

@@ -7,18 +7,17 @@
 extern "C" {
 #endif
 
-#define ExceptionHookDestination 0x80000048
-#define IsDebuggerPresent 0x80000040
+#define OS_DBINTERFACE_ADDR 0x00000040
 
-// static int __DBInterface;
+typedef struct DBInterface
+{
+    u32     bPresent;
+    u32     exceptionMask;
+    void    (*ExceptionDestination) ( void );
+    void    *exceptionReturn;
+} DBInterface;
 
-struct DBInterface {
-  u8 filler0[4];
-  u32 unk4;
-};
-
-static struct DBInterface* __DBInterface;
-static int DBVerbose;
+extern DBInterface* __DBInterface;
 
 void DBInit(void);
 void DBInitComm(int* inputFlagPtr, int* mtrCallback);

obj_files.mk

@@ -643,7 +643,7 @@ BASE_FILES :=\
 	$(BUILD_DIR)/src/Dolphin/PPCArch.o\
 	
 DB_FILES :=\
-	$(BUILD_DIR)/asm/Dolphin/db.o\
+	$(BUILD_DIR)/src/Dolphin/db.ep.o\
 	
 DSP_FILES :=\
 	$(BUILD_DIR)/asm/Dolphin/dsp/dsp.o\

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, ...) {}