Merge https://github.com/pret/pokeemerald

1 files changed, 105 insertions, 0 deletions

diff --git a/asm/var.s b/asm/var.s
new file mode 100644
index 000000000..e976b683b
--- /dev/null
+++ b/asm/var.s
@@ -0,0 +1,105 @@
+	.include "asm/macros.inc"
+	.include "constants/constants.inc"
+
+	.syntax unified
+
+	.text
+
+	thumb_func_start GetVarPointer
+@ u16 *GetVarPointer(u16 varId)
+GetVarPointer: @ 809D648
+	push {lr}
+	lsls r0, 16
+	lsrs r1, r0, 16
+	adds r2, r1, 0
+	ldr r0, =0x00003fff
+	cmp r1, r0
+	bhi _0809D660
+	movs r0, 0
+	b _0809D688
+	.pool
+_0809D660:
+	lsls r0, r1, 16
+	cmp r0, 0
+	bge _0809D67C
+	ldr r0, =gUnknown_081DBA0C
+	ldr r2, =0xffff8000
+	adds r1, r2
+	lsls r1, 2
+	adds r1, r0
+	ldr r0, [r1]
+	b _0809D688
+	.pool
+_0809D67C:
+	ldr r0, =0x03005d8c
+	lsls r1, r2, 1
+	ldr r2, =0xffff939c
+	adds r1, r2
+	ldr r0, [r0]
+	adds r0, r1
+_0809D688:
+	pop {r1}
+	bx r1
+	.pool
+	thumb_func_end GetVarPointer
+
+	thumb_func_start VarGet
+@ u16 VarGet(u16 varId)
+VarGet: @ 809D694
+	push {r4,lr}
+	lsls r0, 16
+	lsrs r4, r0, 16
+	adds r0, r4, 0
+	bl GetVarPointer
+	cmp r0, 0
+	beq _0809D6A8
+	ldrh r0, [r0]
+	b _0809D6AA
+_0809D6A8:
+	adds r0, r4, 0
+_0809D6AA:
+	pop {r4}
+	pop {r1}
+	bx r1
+	thumb_func_end VarGet
+
+	thumb_func_start VarSet
+@ bool8 VarSet(u16 varId, u16 value)
+VarSet: @ 809D6B0
+	push {r4,lr}
+	lsls r0, 16
+	lsrs r0, 16
+	lsls r1, 16
+	lsrs r4, r1, 16
+	bl GetVarPointer
+	cmp r0, 0
+	beq _0809D6C8
+	strh r4, [r0]
+	movs r0, 0x1
+	b _0809D6CA
+_0809D6C8:
+	movs r0, 0
+_0809D6CA:
+	pop {r4}
+	pop {r1}
+	bx r1
+	thumb_func_end VarSet
+
+	thumb_func_start VarGetFieldObjectGraphicsId
+@ u8 VarGetFieldObjectGraphicsId(u8 index)
+VarGetFieldObjectGraphicsId: @ 809D6D0
+	push {lr}
+	lsls r0, 24
+	lsrs r0, 8
+	ldr r1, =0x40100000
+	adds r0, r1
+	lsrs r0, 16
+	bl VarGet
+	lsls r0, 24
+	lsrs r0, 24
+	pop {r1}
+	bx r1
+	.pool
+	thumb_func_end VarGetFieldObjectGraphicsId
+
+	.align 2, 0 @ Don't pad with nop.