clean up dolphin files / work on some rels (#212)

* d_a_alldie / d_a_tboxSw / d_a_tag_gstart / d_a_tag_hstop

* dolphin OS work / cleanup

* dolphin GX work / cleanup

* finish changing dolphin files to C

* more files into C

* match rest of MSL_C math functions

* more dolphin files converted to C

* remove asm

* d_bg_w work

* remove asm

* d_a_alink work / kytag14

include/dolphin/gd/GDBase.h

@@ -3,12 +3,16 @@
 
 #include "dolphin/types.h"
 
-struct GDLObj {
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct GDLObj {
     /* 0x0 */ u8* start;
     /* 0x4 */ u32 length;
     /* 0x8 */ u8* ptr;
     /* 0xC */ u8* end;
-};  // Size: 0x10
+} GDLObj;  // Size: 0x10
 
 extern GDLObj* __GDCurrentDL;
 
@@ -20,11 +24,14 @@ inline u32 GDGetGDLObjOffset(GDLObj* obj) {
     return (u32)(obj->ptr - obj->start);
 }
 
-extern "C" {
-
 void GDInitGDLObj(GDLObj*, u8*, u32);
 void GDFlushCurrToMem();
 void GDPadCurr32();
-}
+
+typedef void (*GDOverflowCallback)(void);
+
+#ifdef __cplusplus
+};
+#endif
 
 #endif /* GDBASE_H */

include/dolphin/gd/GDGeometry.h

@@ -4,11 +4,16 @@
 #include "dolphin/gx/GX.h"
 #include "dolphin/types.h"
 
+#ifdef __cplusplus
 extern "C" {
+#endif
 
 void GDSetVtxDescv(GXVtxDescList*);
 void GDSetArray(GXAttr attr, const void* data, u8 stride);
 void GDSetArrayRaw(GXAttr attr, u32 data, u8 stride);
-}
+
+#ifdef __cplusplus
+};
+#endif
 
 #endif /* GDGEOMETRY_H */