Decompile GX_bgcnt.s

3 files changed, 228 insertions, 423 deletions

diff --git a/arm9/asm/GX_bgcnt.s b/arm9/asm/GX_bgcnt.s
deleted file mode 100644
index 136c9d1d..00000000
--- a/arm9/asm/GX_bgcnt.s
+++ /dev/null
@@ -1,422 +0,0 @@
-    .include "asm/macros.inc"
-    .include "global.inc"
-
-    .text
-
-	arm_func_start G2S_GetBG3CharPtr
-G2S_GetBG3CharPtr: ; 0x020C6F60
-	ldr r1, _020C6FA8 ; =0x04001000
-	ldr r0, _020C6FAC ; =0x0400100E
-	ldr r1, [r1, #0x0]
-	ldrh r2, [r0, #0x0]
-	and r0, r1, #0x7
-	cmp r0, #0x3
-	blt _020C6F8C
-	cmp r0, #0x6
-	bge _020C6FA0
-	ands r0, r2, #0x80
-	bne _020C6FA0
-_020C6F8C:
-	and r0, r2, #0x3c
-	mov r0, r0, lsr #0x2
-	mov r0, r0, lsl #0xe
-	add r0, r0, #0x6200000
-	bx lr
-_020C6FA0:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C6FA8: .word 0x04001000
-_020C6FAC: .word 0x0400100E
-
-	arm_func_start G2_GetBG3CharPtr
-G2_GetBG3CharPtr: ; 0x020C6FB0
-	mov r0, #0x4000000
-	ldr r1, [r0, #0x0]
-	ldr r0, _020C700C ; =0x0400000E
-	and r1, r1, #0x7
-	cmp r1, #0x3
-	ldrh r2, [r0, #0x0]
-	blt _020C6FDC
-	cmp r1, #0x6
-	bge _020C7004
-	ands r0, r2, #0x80
-	bne _020C7004
-_020C6FDC:
-	mov r0, #0x4000000
-	ldr r1, [r0, #0x0]
-	and r0, r2, #0x3c
-	and r1, r1, #0x7000000
-	mov r1, r1, lsr #0x18
-	mov r1, r1, lsl #0x10
-	add r1, r1, #0x6000000
-	mov r0, r0, lsr #0x2
-	add r0, r1, r0, lsl #0xe
-	bx lr
-_020C7004:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C700C: .word 0x0400000E
-
-	arm_func_start G2S_GetBG2CharPtr
-G2S_GetBG2CharPtr: ; 0x020C7010
-	ldr r1, _020C7050 ; =0x04001000
-	ldr r0, _020C7054 ; =0x0400100C
-	ldr r1, [r1, #0x0]
-	ldrh r2, [r0, #0x0]
-	and r0, r1, #0x7
-	cmp r0, #0x5
-	blt _020C7034
-	ands r0, r2, #0x80
-	bne _020C7048
-_020C7034:
-	and r0, r2, #0x3c
-	mov r0, r0, lsr #0x2
-	mov r0, r0, lsl #0xe
-	add r0, r0, #0x6200000
-	bx lr
-_020C7048:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C7050: .word 0x04001000
-_020C7054: .word 0x0400100C
-
-	arm_func_start G2_GetBG2CharPtr
-G2_GetBG2CharPtr: ; 0x020C7058
-	mov r0, #0x4000000
-	ldr r1, [r0, #0x0]
-	ldr r0, _020C70AC ; =0x0400000C
-	and r1, r1, #0x7
-	cmp r1, #0x5
-	ldrh r2, [r0, #0x0]
-	blt _020C707C
-	ands r0, r2, #0x80
-	bne _020C70A4
-_020C707C:
-	mov r0, #0x4000000
-	ldr r1, [r0, #0x0]
-	and r0, r2, #0x3c
-	and r1, r1, #0x7000000
-	mov r1, r1, lsr #0x18
-	mov r1, r1, lsl #0x10
-	add r1, r1, #0x6000000
-	mov r0, r0, lsr #0x2
-	add r0, r1, r0, lsl #0xe
-	bx lr
-_020C70A4:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C70AC: .word 0x0400000C
-
-	arm_func_start G2S_GetBG1CharPtr
-G2S_GetBG1CharPtr: ; 0x020C70B0
-	ldr r0, _020C70CC ; =0x0400100A
-	ldrh r0, [r0, #0x0]
-	and r0, r0, #0x3c
-	mov r0, r0, asr #0x2
-	mov r0, r0, lsl #0xe
-	add r0, r0, #0x6200000
-	bx lr
-	.balign 4
-_020C70CC: .word 0x0400100A
-
-	arm_func_start G2_GetBG1CharPtr
-G2_GetBG1CharPtr: ; 0x020C70D0
-	ldr r1, _020C7100 ; =0x0400000A
-	mov r0, #0x4000000
-	ldrh r1, [r1, #0x0]
-	ldr r0, [r0, #0x0]
-	and r0, r0, #0x7000000
-	mov r0, r0, lsr #0x18
-	and r1, r1, #0x3c
-	mov r0, r0, lsl #0x10
-	mov r1, r1, asr #0x2
-	add r0, r0, #0x6000000
-	add r0, r0, r1, lsl #0xe
-	bx lr
-	.balign 4
-_020C7100: .word 0x0400000A
-
-	arm_func_start G2S_GetBG0CharPtr
-G2S_GetBG0CharPtr: ; 0x020C7104
-	ldr r0, _020C7120 ; =0x04001008
-	ldrh r0, [r0, #0x0]
-	and r0, r0, #0x3c
-	mov r0, r0, asr #0x2
-	mov r0, r0, lsl #0xe
-	add r0, r0, #0x6200000
-	bx lr
-	.balign 4
-_020C7120: .word 0x04001008
-
-	arm_func_start G2_GetBG0CharPtr
-G2_GetBG0CharPtr: ; 0x020C7124
-	ldr r1, _020C7154 ; =0x04000008
-	mov r0, #0x4000000
-	ldrh r1, [r1, #0x0]
-	ldr r0, [r0, #0x0]
-	and r0, r0, #0x7000000
-	mov r0, r0, lsr #0x18
-	and r1, r1, #0x3c
-	mov r0, r0, lsl #0x10
-	mov r1, r1, asr #0x2
-	add r0, r0, #0x6000000
-	add r0, r0, r1, lsl #0xe
-	bx lr
-	.balign 4
-_020C7154: .word 0x04000008
-
-	arm_func_start G2S_GetBG3ScrPtr
-G2S_GetBG3ScrPtr: ; 0x020C7158
-	ldr r1, _020C71D0 ; =0x04001000
-	ldr r0, _020C71D4 ; =0x0400100E
-	ldr r1, [r1, #0x0]
-	ldrh r2, [r0, #0x0]
-	and r3, r1, #0x7
-	cmp r3, #0x6
-	and r0, r2, #0x1f00
-	mov r1, r0, lsr #0x8
-	addls pc, pc, r3, lsl #0x2
-	b _020C71C8
-_020C7180: ; 0x020C7180
-	b _020C719C
-_020C7184: ; 0x020C7184
-	b _020C719C
-_020C7188: ; 0x020C7188
-	b _020C719C
-_020C718C: ; 0x020C718C
-	b _020C71A8
-_020C7190: ; 0x020C7190
-	b _020C71A8
-_020C7194: ; 0x020C7194
-	b _020C71A8
-_020C7198: ; 0x020C7198
-	b _020C71C0
-_020C719C:
-	mov r0, r1, lsl #0xb
-	add r0, r0, #0x6200000
-	bx lr
-_020C71A8:
-	ands r0, r2, #0x80
-	movne r0, r1, lsl #0xe
-	addne r0, r0, #0x6200000
-	moveq r0, r1, lsl #0xb
-	addeq r0, r0, #0x6200000
-	bx lr
-_020C71C0:
-	mov r0, #0x0
-	bx lr
-_020C71C8:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C71D0: .word 0x04001000
-_020C71D4: .word 0x0400100E
-
-	arm_func_start G2_GetBG3ScrPtr
-G2_GetBG3ScrPtr: ; 0x020C71D8
-	ldr r0, _020C7260 ; =0x0400000E
-	mov r2, #0x4000000
-	ldr r1, [r2, #0x0]
-	ldrh r3, [r0, #0x0]
-	ldr r0, [r2, #0x0]
-	and r12, r1, #0x7
-	and r0, r0, #0x38000000
-	mov r1, r0, lsr #0x1b
-	and r0, r3, #0x1f00
-	mov r2, r1, lsl #0x10
-	cmp r12, #0x6
-	mov r1, r0, lsr #0x8
-	addls pc, pc, r12, lsl #0x2
-	b _020C7258
-_020C7210:
-	b _020C722C
-_020C7214:
-	b _020C722C
-_020C7218:
-	b _020C722C
-_020C721C:
-	b _020C7238
-_020C7220:
-	b _020C7238
-_020C7224:
-	b _020C7238
-_020C7228:
-	b _020C7250
-_020C722C:
-	add r0, r2, #0x6000000
-	add r0, r0, r1, lsl #0xb
-	bx lr
-_020C7238:
-	ands r0, r3, #0x80
-	movne r0, r1, lsl #0xe
-	addne r0, r0, #0x6000000
-	addeq r0, r2, #0x6000000
-	addeq r0, r0, r1, lsl #0xb
-	bx lr
-_020C7250:
-	mov r0, #0x0
-	bx lr
-_020C7258:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C7260: .word 0x0400000E
-
-	arm_func_start G2S_GetBG2ScrPtr
-G2S_GetBG2ScrPtr: ; 0x020C7264
-	ldr r1, _020C72DC ; =0x04001000
-	ldr r0, _020C72E0 ; =0x0400100C
-	ldr r1, [r1, #0x0]
-	ldrh r2, [r0, #0x0]
-	and r3, r1, #0x7
-	cmp r3, #0x6
-	and r0, r2, #0x1f00
-	mov r1, r0, lsr #0x8
-	addls pc, pc, r3, lsl #0x2
-	b _020C72D4
-_020C728C: ; 0x020C728C
-	b _020C72A8
-_020C7290: ; 0x020C7290
-	b _020C72A8
-_020C7294: ; 0x020C7294
-	b _020C72A8
-_020C7298: ; 0x020C7298
-	b _020C72A8
-_020C729C: ; 0x020C729C
-	b _020C72A8
-_020C72A0: ; 0x020C72A0
-	b _020C72B4
-_020C72A4: ; 0x020C72A4
-	b _020C72CC
-_020C72A8:
-	mov r0, r1, lsl #0xb
-	add r0, r0, #0x6200000
-	bx lr
-_020C72B4:
-	ands r0, r2, #0x80
-	movne r0, r1, lsl #0xe
-	addne r0, r0, #0x6200000
-	moveq r0, r1, lsl #0xb
-	addeq r0, r0, #0x6200000
-	bx lr
-_020C72CC:
-	mov r0, #0x0
-	bx lr
-_020C72D4:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C72DC: .word 0x04001000
-_020C72E0: .word 0x0400100C
-
-	arm_func_start G2_GetBG2ScrPtr
-G2_GetBG2ScrPtr: ; 0x020C72E4
-	ldr r0, _020C736C ; =0x0400000C
-	mov r2, #0x4000000
-	ldr r1, [r2, #0x0]
-	ldrh r3, [r0, #0x0]
-	ldr r0, [r2, #0x0]
-	and r12, r1, #0x7
-	and r0, r0, #0x38000000
-	mov r1, r0, lsr #0x1b
-	and r0, r3, #0x1f00
-	mov r2, r1, lsl #0x10
-	cmp r12, #0x6
-	mov r1, r0, lsr #0x8
-	addls pc, pc, r12, lsl #0x2
-	b _020C7364
-_020C731C:
-	b _020C7338
-_020C7320:
-	b _020C7338
-_020C7324:
-	b _020C7338
-_020C7328:
-	b _020C7338
-_020C732C:
-	b _020C7338
-_020C7330:
-	b _020C7344
-_020C7334:
-	b _020C735C
-_020C7338:
-	add r0, r2, #0x6000000
-	add r0, r0, r1, lsl #0xb
-	bx lr
-_020C7344:
-	ands r0, r3, #0x80
-	movne r0, r1, lsl #0xe
-	addne r0, r0, #0x6000000
-	addeq r0, r2, #0x6000000
-	addeq r0, r0, r1, lsl #0xb
-	bx lr
-_020C735C:
-	mov r0, #0x6000000
-	bx lr
-_020C7364:
-	mov r0, #0x0
-	bx lr
-	.balign 4
-_020C736C: .word 0x0400000C
-
-	arm_func_start G2S_GetBG1ScrPtr
-G2S_GetBG1ScrPtr: ; 0x020C7370
-	ldr r0, _020C738C ; =0x0400100A
-	ldrh r0, [r0, #0x0]
-	and r0, r0, #0x1f00
-	mov r0, r0, asr #0x8
-	mov r0, r0, lsl #0xb
-	add r0, r0, #0x6200000
-	bx lr
-	.balign 4
-_020C738C: .word 0x0400100A
-
-	arm_func_start G2_GetBG1ScrPtr
-G2_GetBG1ScrPtr: ; 0x020C7390
-	ldr r1, _020C73C0 ; =0x0400000A
-	mov r0, #0x4000000
-	ldrh r1, [r1, #0x0]
-	ldr r0, [r0, #0x0]
-	and r0, r0, #0x38000000
-	mov r0, r0, lsr #0x1b
-	and r1, r1, #0x1f00
-	mov r0, r0, lsl #0x10
-	mov r1, r1, asr #0x8
-	add r0, r0, #0x6000000
-	add r0, r0, r1, lsl #0xb
-	bx lr
-	.balign 4
-_020C73C0: .word 0x0400000A
-
-	arm_func_start G2S_GetBG0ScrPtr
-G2S_GetBG0ScrPtr: ; 0x020C73C4
-	ldr r0, _020C73E0 ; =0x04001008
-	ldrh r0, [r0, #0x0]
-	and r0, r0, #0x1f00
-	mov r0, r0, asr #0x8
-	mov r0, r0, lsl #0xb
-	add r0, r0, #0x6200000
-	bx lr
-	.balign 4
-_020C73E0: .word 0x04001008
-
-	arm_func_start G2_GetBG0ScrPtr
-G2_GetBG0ScrPtr: ; 0x020C73E4
-	ldr r1, _020C7414 ; =0x04000008
-	mov r0, #0x4000000
-	ldrh r1, [r1, #0x0]
-	ldr r0, [r0, #0x0]
-	and r0, r0, #0x38000000
-	mov r0, r0, lsr #0x1b
-	and r1, r1, #0x1f00
-	mov r0, r0, lsl #0x10
-	mov r1, r1, asr #0x8
-	add r0, r0, #0x6000000
-	add r0, r0, r1, lsl #0xb
-	bx lr
-	.balign 4
-_020C7414: .word 0x04000008
diff --git a/arm9/lib/include/gx.h b/arm9/lib/include/gx.h
index 6919cbfd..3f218df9 100644
--- a/arm9/lib/include/gx.h
+++ b/arm9/lib/include/gx.h
@@ -51,6 +51,19 @@
 
 #define HW_REG_DISP3DCNT       0x04000060
 
+#define HW_REG_BG0CNT_A 0x04000008
+#define HW_REG_BG1CNT_A 0x0400000A
+#define HW_REG_BG2CNT_A 0x0400000C
+#define HW_REG_BG3CNT_A 0x0400000E
+
+#define HW_REG_BG0CNT_B 0x04001008
+#define HW_REG_BG1CNT_B 0x0400100A
+#define HW_REG_BG2CNT_B 0x0400100C
+#define HW_REG_BG3CNT_B 0x0400100E
+
+#define HW_REG_DISPCNT_A 0x04000000
+#define HW_REG_DISPCNT_B 0x04001000
+
 //TODO: wait for register commit and replace these
 #define SETREG8(x, y) ((*(vu8 *)x) = y)
 #define SETREG16(x, y) ((*(vu16 *)x) = y)
@@ -105,7 +118,7 @@ void G3_RotY(fx32 sinphi, fx32 cosphi);
 void G3_RotZ(fx32 sinphi, fx32 cosphi);
 
 //GX_g3x
-asm void GXi_NopClearFifo128_(void *reg);
+void GXi_NopClearFifo128_(void *reg);
 void G3X_Init();
 void G3X_ResetMtxStack();
 void G3X_ClearFifo();
@@ -197,6 +210,25 @@ u32 GX_GetBankForSubOBJ();
 u32 GX_GetBankForSubBGExtPltt();
 u32 GX_GetBankForSubOBJExtPltt();
 
+//GX_bgcnt
+void *G2_GetBG0ScrPtr();
+void *G2S_GetBG0ScrPtr();
+void *G2_GetBG1ScrPtr();
+void *G2S_GetBG1ScrPtr();
+void *G2_GetBG2ScrPtr();
+void *G2S_GetBG2ScrPtr();
+void *G2_GetBG3ScrPtr();
+void *G2S_GetBG3ScrPtr();
+void *G2_GetBG0CharPtr();
+void *G2S_GetBG0CharPtr();
+void *G2_GetBG1CharPtr();
+void *G2S_GetBG1CharPtr();
+void *G2_GetBG2CharPtr();
+void *G2S_GetBG2CharPtr();
+void *G2_GetBG3CharPtr();
+void *G2S_GetBG3CharPtr();
+
+
 //GXi_NopClearFifo128_ probably asm
 
 #endif //GUARD_GX_H
diff --git a/arm9/lib/src/GX_bgcnt.c b/arm9/lib/src/GX_bgcnt.c
new file mode 100644
index 00000000..918f4d32
--- /dev/null
+++ b/arm9/lib/src/GX_bgcnt.c
@@ -0,0 +1,195 @@
+#include "global.h"
+#include "main.h"
+#include "gx.h"
+
+void *G2_GetBG0ScrPtr(){
+    u32 temp = (((READREG16(HW_REG_BG0CNT_A) & 0x1F00) >> 0x8) << 0xB);
+    return (void *)(0x6000000 + (((READREG32(HW_REG_DISPCNT_A) & 0x38000000) >> 0x1B) << 0x10) + temp);
+}
+
+void *G2S_GetBG0ScrPtr(){
+    return (void *)(0x6200000 + (((READREG16(HW_REG_BG0CNT_B) & 0x1F00) >> 0x8) << 0xB));
+}
+
+void *G2_GetBG1ScrPtr(){
+    u32 temp = (((READREG16(HW_REG_BG1CNT_A) & 0x1F00) >> 0x8) << 0xB);
+    return (void *)(0x6000000 + (((READREG32(HW_REG_DISPCNT_A) & 0x38000000) >> 0x1B) << 0x10) + temp);
+}
+
+void *G2S_GetBG1ScrPtr(){
+    return (void *)(0x6200000 + (((READREG16(HW_REG_BG1CNT_B) & 0x1F00) >> 0x8) << 0xB));
+}
+
+void *G2_GetBG2ScrPtr(){
+    u32 temp12 = (READREG32(HW_REG_DISPCNT_A) & 0x7);
+    u32 temp3 = READREG16(HW_REG_BG2CNT_A);
+    u32 temp2 = (((READREG32(HW_REG_DISPCNT_A) & 0x38000000) >> 0x1B) << 0x10);
+    u32 temp1 = ((temp3 & 0x1F00) >> 0x8);
+    switch (temp12)
+    {
+        case 0:
+        case 1:
+        case 2:
+        case 3:
+        case 4:
+            return (void *)(0x6000000 + temp2 + (temp1 << 0xB));
+        case 5:
+            if (temp3 & 0x80)
+                return (void *)(0x6000000 + (temp1 << 0xE));
+            else
+                return (void *)(0x6000000 + temp2 + (temp1 << 0xB));
+        case 6:
+            return (void *)0x6000000;
+        default:
+            return NULL;
+    }
+}
+
+void *G2S_GetBG2ScrPtr(){
+    u32 temp12 = (READREG32(HW_REG_DISPCNT_B) & 0x7);
+    u32 temp3 = READREG16(HW_REG_BG2CNT_B);
+    u32 temp1 = ((temp3 & 0x1F00) >> 0x8);
+    switch (temp12)
+    {
+        case 0:
+        case 1:
+        case 2:
+        case 3:
+        case 4:
+            return (void *)(0x6200000 + (temp1 << 0xB));
+        case 5:
+            if (temp3 & 0x80)
+                return (void *)(0x6200000 + (temp1 << 0xE));
+            else
+                return (void *)(0x6200000 + (temp1 << 0xB));
+        case 6:
+            return NULL;
+        default:
+            return NULL;
+    }
+}
+
+void *G2_GetBG3ScrPtr(){
+    u32 temp12 = (READREG32(HW_REG_DISPCNT_A) & 0x7);
+    u32 temp3 = READREG16(HW_REG_BG3CNT_A);
+    u32 temp2 = (((READREG32(HW_REG_DISPCNT_A) & 0x38000000) >> 0x1B) << 0x10);
+    u32 temp1 = ((temp3 & 0x1F00) >> 0x8);
+    switch (temp12)
+    {
+        case 0:
+        case 1:
+        case 2:
+            return (void *)(0x6000000 + temp2 + (temp1 << 0xB));
+        case 3:
+        case 4:
+        case 5:
+            if (temp3 & 0x80)
+                return (void *)(0x6000000 + (temp1 << 0xE));
+            else
+                return (void *)(0x6000000 + temp2 + (temp1 << 0xB));
+        case 6:
+            return NULL;
+        default:
+            return NULL;
+    }
+}
+
+void *G2S_GetBG3ScrPtr(){
+    u32 temp12 = (READREG32(HW_REG_DISPCNT_B) & 0x7);
+    u32 temp3 = READREG16(HW_REG_BG3CNT_B);
+    u32 temp1 = ((temp3 & 0x1F00) >> 0x8);
+    switch (temp12)
+    {
+        case 0:
+        case 1:
+        case 2:
+            return (void *)(0x6200000 + (temp1 << 0xB));
+        case 3:
+        case 4:
+        case 5:
+            if (temp3 & 0x80)
+                return (void *)(0x6200000 + (temp1 << 0xE));
+            else
+                return (void *)(0x6200000 + (temp1 << 0xB));
+        case 6:
+            return NULL;
+        default:
+            return NULL;
+    }
+}
+
+void *G2_GetBG0CharPtr(){
+    u32 temp = (((READREG16(HW_REG_BG0CNT_A) & 0x3C) >> 0x2) << 0xE);
+    return (void *)(0x6000000 + (((READREG32(HW_REG_DISPCNT_A) & 0x7000000) >> 0x18) << 0x10) + temp);
+}
+
+void *G2S_GetBG0CharPtr(){
+    return (void *)(0x6200000 + (((READREG16(HW_REG_BG0CNT_B) & 0x3C) >> 0x2) << 0xE));
+}
+
+void *G2_GetBG1CharPtr(){
+    u32 temp = (((READREG16(HW_REG_BG1CNT_A) & 0x3C) >> 0x2) << 0xE);
+    return (void *)(0x6000000 + (((READREG32(HW_REG_DISPCNT_A) & 0x7000000) >> 0x18) << 0x10) + temp);
+}
+
+void *G2S_GetBG1CharPtr(){
+    return (void *)(0x6200000 + (((READREG16(HW_REG_BG1CNT_B) & 0x3C) >> 0x2) << 0xE));
+}
+
+void *G2_GetBG2CharPtr(){
+    s32 temp1 = (READREG32(HW_REG_DISPCNT_A) & 0x7);
+    u32 temp = READREG16(HW_REG_BG2CNT_A);
+    if (temp1 < 5 || !(temp & 0x80))
+    {
+        u32 temp1 = (((READREG32(HW_REG_DISPCNT_A) & 0x7000000) >> 0x18) << 0x10);
+        u32 temp2 = (temp & 0x3C) >> 2;
+        return (void *)(0x6000000 + temp1 + (temp2 << 0xE));
+    }
+    else
+    {
+        return NULL;
+    }
+}
+
+void *G2S_GetBG2CharPtr(){
+    s32 temp1 = (READREG32(HW_REG_DISPCNT_B) & 0x7);
+    u32 temp = READREG16(HW_REG_BG2CNT_B);
+    if (temp1 < 5 || !(temp & 0x80))
+    {
+        u32 temp2 = ((temp & 0x3C) >> 2) << 0xE;
+        return (void *)(0x6200000 + temp2);
+    }
+    else
+    {
+        return NULL;
+    }
+}
+
+void *G2_GetBG3CharPtr(){
+    s32 temp1 = (READREG32(HW_REG_DISPCNT_A) & 0x7);
+    u32 temp = READREG16(HW_REG_BG3CNT_A);
+    if (temp1 < 3 || (temp1 < 6 && !(temp & 0x80)))
+    {
+        u32 temp1 = (((READREG32(HW_REG_DISPCNT_A) & 0x7000000) >> 0x18) << 0x10);
+        u32 temp2 = (temp & 0x3C) >> 2;
+        return (void *)(0x6000000 + temp1 + (temp2 << 0xE));
+    }
+    else
+    {
+        return NULL;
+    }
+}
+
+void *G2S_GetBG3CharPtr(){
+    s32 temp1 = (READREG32(HW_REG_DISPCNT_B) & 0x7);
+    u32 temp = READREG16(HW_REG_BG3CNT_B);
+    if (temp1 < 3 || (temp1 < 6 && !(temp & 0x80)))
+    {
+        u32 temp2 = ((temp & 0x3C) >> 2) << 0xE;
+        return (void *)(0x6200000 + temp2);
+    }
+    else
+    {
+        return NULL;
+    }
+}