diff --git a/include/asm.h b/include/asm.h
index c73f1c8da..dbf374d2f 100644
--- a/include/asm.h
+++ b/include/asm.h
@@ -16,6 +16,7 @@ extern void GenericConfused(struct Entity_*);
 extern void sub_08001290(struct Entity_*, u32);
 extern void GenericKnockback(struct Entity_*);
 extern u32 GetFuserId(struct Entity_*);
+#define GetFuserIdAndFuserTextId(ent) ((union SplitDWord)(*(MultiReturnTypeSingleEntityArg)(&GetFuserId))(ent))
 extern u32 CheckPlayerInRegion(u32 centerX, u32 centerY, u32 radiusX, u32 radiusY);
 extern u32 GravityUpdate(struct Entity_* entity, u32 gravity);
 enum {
diff --git a/include/gba/syscall.h b/include/gba/syscall.h
index 48f35863b..aa09fd9e8 100644
--- a/include/gba/syscall.h
+++ b/include/gba/syscall.h
@@ -62,4 +62,6 @@ int MultiBoot(struct MultiBootParam* mp);
 
 s32 Div(s32 num, s32 denom);
 
+#define DivAndMod(num, denom) ((union SplitDWord)(*(MultiReturnTypeTwoS32Arg)(&Div))(num, denom))
+
 #endif // SYSCALL_H
diff --git a/include/global.h b/include/global.h
index 3cd7c1d0b..f62b250d6 100644
--- a/include/global.h
+++ b/include/global.h
@@ -119,6 +119,17 @@ typedef struct {
     s8 y;
 } PACKED Coords8;
 
+union SplitDWord {
+    s64 DWORD;
+    u64 DWORD_U;
+    struct {
+        s32 LO, HI;
+    } HALF;
+    struct {
+        u32 LO, HI;
+    } HALF_U;
+};
+
 union SplitWord {
     s32 WORD;
     u32 WORD_U;
@@ -152,4 +163,10 @@ struct Entity_;
 #define BIT(bit) (1 << (bit))
 #define IS_BIT_SET(value, bit) ((value)&BIT(bit))
 
+/**
+ * Multi return function data type casts
+ */
+typedef u64 (*MultiReturnTypeSingleEntityArg)(struct Entity_*);
+typedef s64 (*MultiReturnTypeTwoS32Arg)(s32, s32);
+
 #endif // GLOBAL_H