1 files changed, 35 insertions, 0 deletions
diff --git a/arm9/asm/NNS_G2D_g2di_bitreader.s b/arm9/asm/NNS_G2D_g2di_bitreader.s
new file mode 100644
index 00000000..d36c774f
--- /dev/null
+++ b/arm9/asm/NNS_G2D_g2di_bitreader.s
@@ -0,0 +1,35 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+
+	.section .text
+
+	arm_func_start NNSi_G2dBitReaderRead
+NNSi_G2dBitReaderRead: ; 0x020B76B0
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x4
+	ldrsb r2, [r0, #0x4]
+	ldrb r12, [r0, #0x5]
+	mov r4, r1
+	cmp r2, r4
+	subge r1, r2, r4
+	movge r5, r12, lsr r1
+	strgeb r1, [r0, #0x4]
+	bge _020B7704
+	ldr r3, [r0, #0x0]
+	sub r1, r4, r2
+	add r2, r3, #0x1
+	str r2, [r0, #0x0]
+	ldrb r2, [r3, #0x0]
+	mov r5, r12, lsl r1
+	strb r2, [r0, #0x5]
+	mov r2, #0x8
+	strb r2, [r0, #0x4]
+	bl NNSi_G2dBitReaderRead
+	orr r5, r0, r5
+_020B7704:
+	rsb r0, r4, #0x8
+	mov r1, #0xff
+	and r0, r5, r1, asr r0
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r5,pc}
+	arm_func_end NNSi_G2dBitReaderRead