1 files changed, 85 insertions, 0 deletions
diff --git a/arm9/asm/RUNTIME_d_dtof.s b/arm9/asm/RUNTIME_d_dtof.s
new file mode 100644
index 00000000..61940399
--- /dev/null
+++ b/arm9/asm/RUNTIME_d_dtof.s
@@ -0,0 +1,85 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+
+    .text
+
+	arm_func_start _d2f
+_d2f:
+	and r2, r1, #0x80000000
+	mov r12, r1, lsr #0x14
+	bics r12, r12, #0x800
+	beq _020E9ED4
+	mov r3, r12, lsl #0x15
+	cmn r3, #0x200000
+	bhs _020E9EB8
+	subs r12, r12, #0x380
+	bls _020E9EE4
+	cmp r12, #0xff
+	bge _020E9F54
+	mov r1, r1, lsl #0xc
+	orr r3, r2, r1, lsr #0x9
+	orr r3, r3, r0, lsr #0x1d
+	movs r1, r0, lsl #0x3
+	orr r0, r3, r12, lsl #0x17
+	bxeq lr
+	tst r1, #0x80000000
+	bxeq lr
+	movs r1, r1, lsl #0x1
+	andeqs r1, r0, #0x1
+	addne r0, r0, #0x1
+	bx lr
+_020E9EB8:
+	orrs r3, r0, r1, lsl #0xc
+	bne _020E9ECC
+	mov r0, #0xff000000
+	orr r0, r2, r0, lsr #0x1
+	bx lr
+_020E9ECC:
+	mvn r0, #0x80000000
+	bx lr
+_020E9ED4:
+	orrs r3, r0, r1, lsl #0xc
+	bne __f_underflow
+	.global __f_result_zero
+__f_result_zero:
+	mov r0, r2
+	bx lr
+_020E9EE4:
+	cmn r12, #0x17
+	beq _020E9F38
+	bmi __f_underflow
+	mov r1, r1, lsl #0xb
+	orr r1, r1, #0x80000000
+	mov r3, r1, lsr #0x8
+	orr r3, r3, r0, lsr #0x1d
+	rsb r12, r12, #0x1
+	movs r1, r0, lsl #0x3
+	orr r0, r2, r3, lsr r12
+	rsb r12, r12, #0x20
+	mov r3, r3, lsl r12
+	orrne r3, r3, #0x1
+	movs r1, r3
+	bxeq lr
+	tst r1, #0x80000000
+	bxeq lr
+	movs r1, r1, lsl #0x1
+	andeqs r1, r0, #0x1
+	addne r0, r0, #0x1
+	bx lr
+_020E9F38:
+	orr r0, r0, r1, lsl #0xc
+    .global __f_very_tiny_result
+__f_very_tiny_result:
+	movs r1, r0
+	mov r0, r2
+	addne r0, r0, #0x1
+	bx lr
+	.global __f_underflow
+__f_underflow:
+	mov r0, r2
+	bx lr
+_020E9F54:
+	mov r0, #0xff000000
+	orr r0, r2, r0, lsr #0x1
+	bx lr
+	arm_func_end _d2f