Merge pull request #2 from PikalaxALT/main

Disassemble main.s
2026-03-21 17:54:29 -05:00 · 2020-04-12 17:45:29 -04:00 · 2020-04-12 17:45:29 -04:00 · 47f36847e1
commit 47f36847e1
parent 09d4bbd57a 4a7f4cf494
2 changed files with 165 additions and 41 deletions
--- a/asm/main.s
+++ b/asm/main.s
@ -10,7 +10,7 @@ _02000808:
 	ldrh r0, [ip, #6]
 	cmp r0, #0
 	bne _02000808
-	bl sub_02000A78
+	bl sub_2000A78
 	mov r0, #0x13
 	msr cpsr_c, r0
 	ldr r0, _02000918 @ =0x027E0000
@ -32,54 +32,170 @@ _02000808:
 	mov r0, #0
 	ldr r1, _02000918 @ =0x027E0000
 	mov r2, #0x4000
-	bl _0200093C
-_02000870:
-	.byte 0x00, 0x00, 0xA0, 0xE3, 0xA4, 0x10, 0x9F, 0xE5, 0x01, 0x2B, 0xA0, 0xE3, 0x2E, 0x00, 0x00, 0xEB
-	.byte 0x02, 0x0C, 0xA0, 0xE3, 0x98, 0x10, 0x9F, 0xE5, 0x01, 0x2B, 0xA0, 0xE3, 0x2A, 0x00, 0x00, 0xEB
-	.byte 0x90, 0x10, 0x9F, 0xE5, 0x14, 0x00, 0x91, 0xE5, 0x2C, 0x00, 0x00, 0xEB, 0x56, 0x00, 0x00, 0xEB
-	.byte 0x80, 0x00, 0x9F, 0xE5, 0x0C, 0x10, 0x90, 0xE5, 0x10, 0x20, 0x90, 0xE5, 0x01, 0x30, 0xA0, 0xE1
-	.byte 0x00, 0x00, 0xA0, 0xE3, 0x02, 0x00, 0x51, 0xE1, 0x04, 0x00, 0x81, 0x34, 0xFC, 0xFF, 0xFF, 0x3A
-	.byte 0x1F, 0x10, 0xC3, 0xE3, 0x9A, 0x0F, 0x07, 0xEE, 0x35, 0x1F, 0x07, 0xEE, 0x3E, 0x1F, 0x07, 0xEE
-	.byte 0x20, 0x10, 0x81, 0xE2, 0x02, 0x00, 0x51, 0xE1, 0xF9, 0xFF, 0xFF, 0xBA, 0x48, 0x10, 0x9F, 0xE5
-	.byte 0x00, 0x00, 0x81, 0xE5, 0x2C, 0x10, 0x9F, 0xE5, 0xFF, 0x1D, 0x81, 0xE2, 0x3C, 0x10, 0x81, 0xE2
-	.byte 0x38, 0x00, 0x9F, 0xE5, 0x00, 0x00, 0x81, 0xE5, 0x33, 0xAF, 0x03, 0xEB, 0x98, 0x00, 0x00, 0xEB
-	.byte 0x63, 0xAF, 0x03, 0xEB, 0x28, 0x10, 0x9F, 0xE5, 0x28, 0xE0, 0x9F, 0xE5, 0x04, 0x00, 0x1D, 0xE3
-	.byte 0x04, 0xD0, 0x4D, 0x12, 0x11, 0xFF, 0x2F, 0xE1
+	bl sub_200093C
+	mov r0, #0
+	ldr r1, _02000920 @ =0x05000000
+	mov r2, #1024
+	bl sub_200093C
+	mov r0, #512
+	ldr r1, _02000924 @ =0x07000000
+	mov r2, #1024
+	bl sub_200093C
+	ldr r1, _02000928 @ = 0x02000B68
+	ldr r0, [r1, #20]
+	bl sub_2000950
+	bl sub_20009FC
+	ldr r0, _02000928 @ =0x02000B68
+	ldr r1, [r0, #12]
+	ldr r2, [r0, #16]
+	mov r3, r1
+	mov r0, #0
+_020008B4:
+	cmp r1, r2
+	strcc r0, [r1], #4
+	bcc _020008B4
+	bic r1, r3, #31
+_020008C4:
+	mcr p15, #0, r0, cr7, cr10, 4
+	mcr p15, #0, r1, cr7, cr5, 1
+	mcr p15, #0, r1, cr7, cr14, 1
+	add r1, #32
+	cmp r1, r2
+	blt _020008C4
+	ldr r1, _0200092C @ =0x027FFF9C
+	str r0, [r1]
+	ldr r1, _02000918 @ =0x027E0000
+	add r1, r1, #16320
+	add r1, r1, #60
+	ldr r0, _02000930 @ =0x01FF8000
+	str r0, [r1]
+	bl sub_20EC5CC
+	bl sub_2000B64_dummy
+	bl sub_20EC694
+	ldr r1, _02000934 @ =0x02000C55
+	ldr lr, _02000938 @ =0xFFFF0000
+	tst sp, #4
+	subne sp, sp, #4
+	bx r1
 _02000918: .4byte 0x027E0000
 _0200091C: .4byte 0x00000400
-_02000920:
-	.byte 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x07, 0x68, 0x0B, 0x00, 0x02, 0x9C, 0xFF, 0x7F, 0x02
-	.byte 0x00, 0x80, 0xFF, 0x01, 0x55, 0x0C, 0x00, 0x02, 0x00, 0x00, 0xFF, 0xFF
-_0200093C:
+_02000920: .4byte 0x05000000
+_02000924: .4byte 0x07000000
+_02000928: .4byte 0x02000B68
+_0200092C: .4byte 0x027FFF9C
+_02000930: .4byte 0x01FF8000
+_02000934: .4byte 0x02000C55 @ NdsMain
+_02000938: .4byte 0xFFFF0000
+	arm_func_end Entry
+
+	arm_func_start sub_200093C
+sub_200093C:
 	add ip, r1, r2
 _02000940:
 	cmp r1, ip
 	stmlt r1!, {r0}
 	blt _02000940
 	bx lr
-_02000950:
-	.byte 0x00, 0x00, 0x50, 0xE3, 0x27, 0x00, 0x00, 0x0A, 0xF0, 0x00, 0x2D, 0xE9, 0x06, 0x00, 0x10, 0xE9
-	.byte 0x02, 0x20, 0x80, 0xE0, 0x21, 0x3C, 0x40, 0xE0, 0xFF, 0x14, 0xC1, 0xE3, 0x01, 0x10, 0x40, 0xE0
-	.byte 0x02, 0x40, 0xA0, 0xE1, 0x01, 0x00, 0x53, 0xE1, 0x15, 0x00, 0x00, 0xDA, 0x01, 0x50, 0x73, 0xE5
-	.byte 0x08, 0x60, 0xA0, 0xE3, 0x01, 0x60, 0x56, 0xE2, 0xF9, 0xFF, 0xFF, 0xBA, 0x80, 0x00, 0x15, 0xE3
-	.byte 0x02, 0x00, 0x00, 0x1A, 0x01, 0x00, 0x73, 0xE5, 0x01, 0x00, 0x62, 0xE5, 0x09, 0x00, 0x00, 0xEA
-	.byte 0x01, 0xC0, 0x73, 0xE5, 0x01, 0x70, 0x73, 0xE5, 0x0C, 0x74, 0x87, 0xE1, 0x0F, 0x7A, 0xC7, 0xE3
-	.byte 0x02, 0x70, 0x87, 0xE2, 0x20, 0xC0, 0x8C, 0xE2, 0x07, 0x00, 0xD2, 0xE7, 0x01, 0x00, 0x62, 0xE5
-	.byte 0x10, 0xC0, 0x5C, 0xE2, 0xFB, 0xFF, 0xFF, 0xAA, 0x01, 0x00, 0x53, 0xE1, 0x85, 0x50, 0xA0, 0xE1
-	.byte 0xEB, 0xFF, 0xFF, 0xCA, 0x00, 0x00, 0xA0, 0xE3, 0x1F, 0x30, 0xC1, 0xE3, 0x9A, 0x0F, 0x07, 0xEE
-	.byte 0x35, 0x3F, 0x07, 0xEE, 0x3E, 0x3F, 0x07, 0xEE, 0x20, 0x30, 0x83, 0xE2, 0x04, 0x00, 0x53, 0xE1
-	.byte 0xF9, 0xFF, 0xFF, 0xBA, 0xF0, 0x00, 0xBD, 0xE8, 0x1E, 0xFF, 0x2F, 0xE1, 0x6C, 0x00, 0x9F, 0xE5
-	.byte 0x00, 0x10, 0x90, 0xE5, 0x04, 0x20, 0x90, 0xE5, 0x08, 0x30, 0x90, 0xE5, 0x02, 0x00, 0x51, 0xE1
-	.byte 0x15, 0x00, 0x00, 0x0A, 0x04, 0x50, 0x91, 0xE4, 0x04, 0x70, 0x91, 0xE4, 0x07, 0x60, 0x85, 0xE0
-	.byte 0x05, 0x40, 0xA0, 0xE1, 0x06, 0x00, 0x54, 0xE1, 0x04, 0x70, 0x93, 0x44, 0x04, 0x70, 0x84, 0x44
-	.byte 0xFB, 0xFF, 0xFF, 0x4A, 0x04, 0x70, 0x91, 0xE4, 0x07, 0x60, 0x84, 0xE0, 0x00, 0x70, 0xA0, 0xE3
-	.byte 0x06, 0x00, 0x54, 0xE1, 0x04, 0x70, 0x84, 0x34, 0xFC, 0xFF, 0xFF, 0x3A, 0x1F, 0x40, 0xC5, 0xE3
-	.byte 0x9A, 0x7F, 0x07, 0xEE, 0x35, 0x4F, 0x07, 0xEE, 0x3E, 0x4F, 0x07, 0xEE, 0x20, 0x40, 0x84, 0xE2
-	.byte 0x06, 0x00, 0x54, 0xE1, 0xF9, 0xFF, 0xFF, 0xBA, 0xE7, 0xFF, 0xFF, 0xEA, 0x00, 0x00, 0x00, 0xEA
-	.byte 0x68, 0x0B, 0x00, 0x02, 0x1E, 0xFF, 0x2F, 0xE1
+	arm_func_end sub_200093C

-	arm_func_start sub_02000A78
-sub_02000A78: @ 0x02000A78
+	arm_func_start sub_2000950
+sub_2000950:
+	cmp r0, #0
+	beq _020009F8
+	push {r4, r5, r6, r7}
+	ldmdb r0, {r1, r2}
+	add r2, r0, r2
+	sub r3, r0, r1, lsr #24
+	bic r1, r1, #-16777216
+	sub r1, r0, r1
+	mov r4, r2
+_02000974:
+	cmp r3, r1
+	ble _020009D4
+	ldrb r5, [r3, #-1]!
+	mov r6, #8
+_02000984:
+	subs r6, r6, #1
+	blt _02000974
+	tst r5, #128
+	bne _020009A0
+	ldrb r0, [r3, #-1]!
+	strb r0, [r2, #-1]!
+	b _020009C8
+_020009A0:
+	ldrb ip, [r3, #-1]!
+	ldrb r7, [r3, #-1]!
+	orr r7, r7, ip, lsl #8
+	bic r7, r7, #61440
+	add r7, r7, #2
+	add ip, ip, #32
+_020009B8:
+	ldrb r0, [r2, r7]
+	strb r0, [r2, #-1]!
+	subs ip, ip, #16
+	bge _020009B8
+_020009C8:
+	cmp r3, r1
+	lsl r5, r5, #1
+	bgt _02000984
+_020009D4:
+	mov r0, #0
+	bic r3, r1, #31
+_020009DC:
+	mcr p15, #0, r0, cr7, cr10, 4
+	mcr p15, #0, r3, cr7, cr5, 1
+	mcr p15, #0, r3, cr7, cr14, 1
+	add r3, r3, #32
+	cmp r3, r4
+	blt _020009DC
+	pop {r4, r5, r6, r7}
+_020009F8:
+	bx lr
+	arm_func_end sub_2000950
+
+	arm_func_start sub_20009FC
+sub_20009FC:
+	ldr r0, _02000A70 @ =0x02000B68
+	ldr r1, [r0]
+	ldr r2, [r0, #4]
+	ldr r3, [r0, #8]
+_02000A0C:
+	cmp r1, r2
+	beq _02000A6C
+	ldr r5, [r1], #4
+	ldr r7, [r1], #4
+	add r6, r5, r7
+	mov r4, r5
+_02000A24:
+	cmp r4, r6
+	ldrmi r7, [r3], #4
+	strmi r7, [r4], #4
+	bmi _02000A24
+	ldr r7, [r1], #4
+	add r6, r4, r7
+	mov r7, #0
+_02000A40:
+	cmp r4, r6
+	strcc r7, [r4], #4
+	bcc _02000A40
+	bic r4, r5, #31
+_02000A50:
+	mcr p15, #0, r7, cr7, cr10, 4
+	mcr p15, #0, r4, cr7, cr5, 1
+	mcr p15, #0, r4, cr7, cr14, 1
+	add r4, r4, #32
+	cmp r4, r6
+	blt _02000A50
+	b _02000A0C
+_02000A6C:
+	b _2000A74
+_02000A70: .4byte 0x02000B68
+_2000A74:
+	bx lr
+	arm_func_end sub_20009FC
+
+	arm_func_start sub_2000A78
+sub_2000A78: @ 0x02000A78
 	mrc p15, #0, r0, c1, c0, #0
 	ldr r1, _02000B30 @ =0x000F9005
 	bic r0, r0, r1
--- a/asm/rom2.s
+++ b/asm/rom2.s
@ -2,4 +2,12 @@

 .section .text

-.incbin "baserom.nds", 0x4E0C, 0x106918
+.incbin "baserom.nds", 0x4E0C, 0xEB7C0
+
+	.global sub_20EC5CC
+sub_20EC5CC:
+.incbin "baserom.nds", 0xF05CC, 0xC8
+
+	.global sub_20EC694
+sub_20EC694:
+.incbin "baserom.nds", 0xF0694, 0x1b090