Hoenn region map entries

asm/charmap.s

@@ -252,4 +252,5 @@
 	.charmapconst PK, 0x53
 	.charmapconst PKMN, 0x53, 0x54
 	.charmapconst POKEBLOCK, 0x55, 0x56, 0x57, 0x58, 0x59
+	.charmapconst AQUA, 0xFD, 0x08
 	.charmapconst next, 0xFE

asm/emerald.s

@@ -559815,7 +559815,7 @@ sub_81238AC: ; 81238AC
 	ldrh r3, [r7, 0x6]
 @08123ABE:
 	str r6, [sp]
-	ldr r5, =gUnknown_085A147C
+	ldr r5, =gRegionMapEntries
 	ldr r4, =0x0203a144
 	ldr r0, [r4]
 	mov r10, r0
@@ -560069,7 +560069,7 @@ sub_8123C00: ; 8123C00
 	ldrb r1, [r0, 0x14]
 	strh r1, [r2]
 	ldr r6, [r0]
-	ldr r1, =gUnknown_085A147C
+	ldr r1, =gRegionMapEntries
 	ldrh r0, [r2]
 	lsls r0, 3
 	adds r5, r0, r1
@@ -560125,7 +560125,7 @@ sub_8123C00: ; 8123C00
 	movs r1, 0
 	strb r1, [r0]
 	ldr r2, [r2]
-	ldr r3, =gUnknown_085A147C
+	ldr r3, =gRegionMapEntries
 	ldrh r0, [r2]
 	lsls r0, 3
 	adds r0, r3
@@ -561270,7 +561270,7 @@ GetMapName: ; 812456C
 @08124584:
 	cmp r1, 0xD4
 	bhi @081245A0
-	ldr r0, =gUnknown_085A147C
+	ldr r0, =gRegionMapEntries
 	lsls r1, 3
 	adds r0, 0x4
 	adds r1, r0
@@ -561371,7 +561371,7 @@ sub_8124630: ; 8124630
 	push {r4,r5,lr}
 	ldr r5, [sp, 0xC]
 	lsls r0, 16
-	ldr r4, =gUnknown_085A147C
+	ldr r4, =gRegionMapEntries
 	lsrs r0, 13
 	adds r0, r4
 	ldrb r4, [r0]
@@ -611472,7 +611472,7 @@ sub_813D6D0: ; 813D6D0
 	adds r7, r2, 0
 	ldr r0, =0x030011fc
 	mov r9, r0
-	ldr r6, =gUnknown_085A147C
+	ldr r6, =gRegionMapEntries
 	ldr r1, =0x030011fe
 	mov r8, r1
 @0813D710:

asm/macros.s

@@ -128,3 +128,11 @@
 	.macro ec_pokemon2 name
 	.2byte (EC_GROUP_POKEMON2 << 9) | SPECIES_\name
 	.endm
+
+	.macro region_map_entry x, y, width, height, name
+	.byte \x
+	.byte \y
+	.byte \width
+	.byte \height
+	.4byte gMapName_\name
+	.endm