1 files changed, 149 insertions, 0 deletions
diff --git a/arm7/asm/OS_arena.s b/arm7/asm/OS_arena.s
new file mode 100644
index 00000000..3b444cdd
--- /dev/null
+++ b/arm7/asm/OS_arena.s
@@ -0,0 +1,149 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+
+    .text
+
+	arm_func_start OS_SetArenaLo
+OS_SetArenaLo: ; 0x037F9BBC
+	mov	r0, r0, lsl #2
+	add	r0, r0, #40894464	; 0x2700000
+	add	r0, r0, #1044480	; 0xff000
+	str	r1, [r0, #3488]	; 0xda0
+	bx	lr
+
+	arm_func_start OS_SetArenaHi
+OS_SetArenaHi: ; 0x037F9BD0
+	mov	r0, r0, lsl #2
+	add	r0, r0, #40894464	; 0x2700000
+	add	r0, r0, #1044480	; 0xff000
+	str	r1, [r0, #3524]	; 0xdc4
+	bx	lr
+
+	arm_func_start OS_GetInitArenaLo
+OS_GetInitArenaLo: ; 0x037F9BE4
+	cmp	r0, #1
+	beq	_037F9C00
+	cmp	r0, #7
+	beq	_037F9C08
+	cmp	r0, #8
+	beq	_037F9C18
+	b	_037F9C2C
+_037F9C00:
+	ldr	r0, _037F9C34	; =0x027FAFCC
+	bx	lr
+_037F9C08:
+	ldr	r0, _037F9C38	; =0x0380B92C
+	cmp	r0, #58720256	; 0x03800000
+	movhi	r0, #58720256	; 0x03800000
+	bx	lr
+_037F9C18:
+	mov	r0, #58720256	; 0x03800000
+	ldr	r1, _037F9C38	; =0x0380B92C
+	cmp	r1, #58720256	; 0x03800000
+	movhi	r0, r1
+	bx	lr
+_037F9C2C:
+	mov	r0, #0
+	bx	lr
+_037F9C34:	.word	0x027FAFCC
+_037F9C38:	.word	0x0380B92C
+
+	arm_func_start OS_GetInitArenaHi
+OS_GetInitArenaHi: ; 0x037F9C3C
+	cmp	r0, #1
+	beq	_037F9C58
+	cmp	r0, #7
+	beq	_037F9C60
+	cmp	r0, #8
+	beq	_037F9C68
+	b	_037F9CA0
+_037F9C58:
+	ldr	r0, _037F9CA8	; =0x027FF000
+	bx	lr
+_037F9C60:
+	mov	r0, #58720256	; 0x03800000
+	bx	lr
+_037F9C68:
+	ldr	r1, _037F9CAC	; =0x00000400
+	ldr	r0, _037F9CB0	; =0x0380FF80
+	sub	r2, r0, r1
+	mov	r0, #58720256	; 0x03800000
+	ldr	r1, _037F9CB4	; =0x0380B92C
+	cmp	r1, #58720256	; 0x03800000
+	movhi	r0, r1
+	ldr	r1, _037F9CB8	; =0x00000400
+	cmp	r1, #0
+	bxeq	lr
+	cmp	r1, #0
+	sublt	r0, r0, r1
+	subge	r0, r2, r1
+	bx	lr
+_037F9CA0:
+	mov	r0, #0
+	bx	lr
+_037F9CA8:	.word	0x027FF000
+_037F9CAC:	.word	0x00000400
+_037F9CB0:	.word	0x0380FF80
+_037F9CB4:	.word	0x0380B92C
+_037F9CB8:	.word	0x00000400
+
+	arm_func_start OS_GetArenaLo
+OS_GetArenaLo: ; 0x037F9CBC
+	mov	r0, r0, lsl #2
+	add	r0, r0, #40894464	; 0x2700000
+	add	r0, r0, #1044480	; 0xff000
+	ldr	r0, [r0, #3488]	; 0xda0
+	bx	lr
+
+	arm_func_start OS_GetArenaHi
+OS_GetArenaHi: ; 0x037F9CD0
+	mov	r0, r0, lsl #2
+	add	r0, r0, #40894464	; 0x2700000
+	add	r0, r0, #1044480	; 0xff000
+	ldr	r0, [r0, #3524]	; 0xdc4
+	bx	lr
+
+	arm_func_start OS_InitArena
+OS_InitArena: ; 0x037F9CE4
+	stmfd	sp!, {lr}
+	sub	sp, sp, #4
+	ldr	r1, _037F9D84	; =_038078F4
+	ldr	r0, [r1]
+	cmp	r0, #0
+	bne	_037F9D78
+	mov	r0, #1
+	str	r0, [r1]
+	bl	OS_GetInitArenaHi
+	mov	r1, r0
+	mov	r0, #1
+	bl	OS_SetArenaHi
+	mov	r0, #1
+	bl	OS_GetInitArenaLo
+	mov	r1, r0
+	mov	r0, #1
+	bl	OS_SetArenaLo
+	mov	r0, #7
+	bl	OS_GetInitArenaHi
+	mov	r1, r0
+	mov	r0, #7
+	bl	OS_SetArenaHi
+	mov	r0, #7
+	bl	OS_GetInitArenaLo
+	mov	r1, r0
+	mov	r0, #7
+	bl	OS_SetArenaLo
+	mov	r0, #8
+	bl	OS_GetInitArenaHi
+	mov	r1, r0
+	mov	r0, #8
+	bl	OS_SetArenaHi
+	mov	r0, #8
+	bl	OS_GetInitArenaLo
+	mov	r1, r0
+	mov	r0, #8
+	bl	OS_SetArenaLo
+_037F9D78:
+	add	sp, sp, #4
+	ldmia	sp!, {lr}
+	bx	lr
+_037F9D84:	.word	_038078F4