split file_system.s

asm/file_system.s

@@ -0,0 +1,287 @@
+	.include "constants/gba_constants.inc"
+	.include "asm/macros.inc"
+
+	.syntax unified
+
+	.text
+
+	thumb_func_start InitFileSystem
+InitFileSystem:
+	push {r4,lr}
+	ldr r3, _0800A8EC
+	ldr r4, _0800A8F0
+	movs r2, 0
+	ldr r0, _0800A8F4
+	movs r1, 0x3F
+_0800A8D0:
+	str r2, [r0]
+	str r2, [r0, 0x4]
+	adds r0, 0x8
+	subs r1, 0x1
+	cmp r1, 0
+	bge _0800A8D0
+	movs r0, 0
+	str r0, [r3]
+	movs r0, 0x1
+	str r0, [r4]
+	pop {r4}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0800A8EC: .4byte gUnknown_203B094
+_0800A8F0: .4byte gUnknown_202D2A4
+_0800A8F4: .4byte gUnknown_202D2A8
+	thumb_func_end InitFileSystem
+
+	thumb_func_start sub_800A8F8
+sub_800A8F8:
+	ldr r1, _0800A904
+	ldr r2, [r1]
+	str r0, [r1]
+	adds r0, r2, 0
+	bx lr
+	.align 2, 0
+_0800A904: .4byte gUnknown_202D2A4
+	thumb_func_end sub_800A8F8
+
+	thumb_func_start OpenFile
+OpenFile:
+	push {r4-r7,lr}
+	mov r7, r8
+	push {r7}
+	sub sp, 0x12C
+	mov r8, r0
+	adds r4, r1, 0
+	ldr r1, _0800A93C
+	adds r0, r4, 0
+	bl strcmp
+	cmp r0, 0
+	beq _0800A922
+	movs r0, 0x1
+_0800A922:
+	movs r1, 0
+	lsls r0, 24
+	cmp r0, 0
+	bne _0800A92C
+	movs r1, 0x1
+_0800A92C:
+	cmp r1, 0
+	beq _0800A9B6
+	ldr r7, [r4, 0xC]
+	movs r6, 0
+	ldr r0, [r4, 0x8]
+	subs r5, r0, 0x1
+	b _0800A94A
+	.align 2, 0
+_0800A93C: .4byte gUnknown_80B9B94
+_0800A940:
+	cmp r0, 0
+	bge _0800A948
+	adds r6, r4, 0x1
+	b _0800A94A
+_0800A948:
+	adds r5, r4, 0
+_0800A94A:
+	cmp r6, r5
+	bge _0800A968
+	adds r0, r6, r5
+	lsrs r1, r0, 31
+	adds r0, r1
+	asrs r4, r0, 1
+	lsls r0, r4, 3
+	adds r0, r7
+	ldr r0, [r0]
+	mov r1, r8
+	bl strcmp
+	cmp r0, 0
+	bne _0800A940
+	adds r6, r4, 0
+_0800A968:
+	lsls r0, r6, 3
+	adds r6, r7, r0
+	ldr r0, [r6]
+	mov r1, r8
+	bl strcmp
+	cmp r0, 0
+	beq _0800A994
+	ldr r1, _0800A984
+	mov r0, sp
+	mov r2, r8
+	bl sprintf
+	b _0800A9B6
+	.align 2, 0
+_0800A984: .4byte gUnknown_80B9B9C
+_0800A988:
+	str r6, [r2]
+	adds r0, r7, 0x4
+	adds r0, r3, r0
+	str r1, [r0]
+	adds r0, r2, 0
+	b _0800A9B8
+_0800A994:
+	ldr r0, _0800A9C4
+	ldr r0, [r0]
+	movs r4, 0
+	ldr r5, _0800A9C8
+	adds r7, r5, 0
+_0800A99E:
+	adds r0, 0x1
+	cmp r0, 0x3F
+	ble _0800A9A6
+	movs r0, 0
+_0800A9A6:
+	lsls r3, r0, 3
+	adds r2, r3, r5
+	ldr r1, [r2]
+	cmp r1, 0
+	beq _0800A988
+	adds r4, 0x1
+	cmp r4, 0x3F
+	ble _0800A99E
+_0800A9B6:
+	movs r0, 0
+_0800A9B8:
+	add sp, 0x12C
+	pop {r3}
+	mov r8, r3
+	pop {r4-r7}
+	pop {r1}
+	bx r1
+	.align 2, 0
+_0800A9C4: .4byte gUnknown_203B094
+_0800A9C8: .4byte gUnknown_202D2A8
+	thumb_func_end OpenFile
+
+	thumb_func_start GetFileDataPtrFromFileEntry
+GetFileDataPtrFromFileEntry:
+	ldr r1, [r0]
+	ldr r1, [r1, 0x4]
+	str r1, [r0, 0x4]
+	adds r0, r1, 0
+	bx lr
+	thumb_func_end GetFileDataPtrFromFileEntry
+
+	thumb_func_start GetFileDataPtr
+GetFileDataPtr:
+	push {r4,lr}
+	adds r4, r0, 0
+	bl GetFileDataPtrFromFileEntry
+	adds r0, r4, 0
+	bl GetSiroPtr
+	pop {r4}
+	pop {r1}
+	bx r1
+	thumb_func_end GetFileDataPtr
+
+	thumb_func_start OpenFileAndGetFileDataPtr
+OpenFileAndGetFileDataPtr:
+	push {r4,lr}
+	bl OpenFile
+	adds r4, r0, 0
+	cmp r4, 0
+	beq _0800A9FE
+	movs r1, 0
+	bl GetFileDataPtr
+_0800A9FE:
+	adds r0, r4, 0
+	pop {r4}
+	pop {r1}
+	bx r1
+	thumb_func_end OpenFileAndGetFileDataPtr
+
+	thumb_func_start Call_OpenFileAndGetFileDataPtr
+Call_OpenFileAndGetFileDataPtr:
+	push {lr}
+	bl OpenFileAndGetFileDataPtr
+	pop {r1}
+	bx r1
+	thumb_func_end Call_OpenFileAndGetFileDataPtr
+
+	thumb_func_start CloseFile
+CloseFile:
+	push {r4,r5,lr}
+	adds r4, r0, 0
+	movs r1, 0
+	ldr r0, _0800AA30
+	movs r3, 0
+	ldr r5, _0800AA34
+	adds r2, r0, 0x4
+_0800AA22:
+	cmp r0, r4
+	bne _0800AA38
+	str r3, [r0]
+	str r3, [r2]
+	str r1, [r5]
+	b _0800AA42
+	.align 2, 0
+_0800AA30: .4byte gUnknown_202D2A8
+_0800AA34: .4byte gUnknown_203B094
+_0800AA38:
+	adds r2, 0x8
+	adds r0, 0x8
+	adds r1, 0x1
+	cmp r1, 0x3F
+	ble _0800AA22
+_0800AA42:
+	pop {r4,r5}
+	pop {r0}
+	bx r0
+	thumb_func_end CloseFile
+
+	thumb_func_start GetSiroPtr
+GetSiroPtr:
+	push {r4,r5,lr}
+	adds r5, r0, 0
+	ldr r4, [r5, 0x4]
+	ldr r1, [r4]
+	ldr r0, _0800AA60
+	cmp r1, r0
+	beq _0800AA68
+	ldr r0, _0800AA64
+	cmp r1, r0
+	beq _0800AA6E
+	adds r0, r4, 0
+	b _0800AA72
+	.align 2, 0
+_0800AA60: .4byte 0x30524953
+_0800AA64: .4byte 0x4f524953
+_0800AA68:
+	adds r0, r4, 0
+	bl NDS_DecompressRLE
+_0800AA6E:
+	ldr r0, [r4, 0x4]
+	str r0, [r5, 0x4]
+_0800AA72:
+	pop {r4,r5}
+	pop {r1}
+	bx r1
+	thumb_func_end GetSiroPtr
+
+	thumb_func_start UnusedGetSir0Ptr
+UnusedGetSir0Ptr:
+	push {r4,lr}
+	adds r4, r0, 0
+	ldr r1, [r4]
+	ldr r0, _0800AA90
+	cmp r1, r0
+	bne _0800AA94
+	adds r0, r4, 0
+	bl NDS_DecompressRLE
+	ldr r0, [r4, 0x4]
+	b _0800AA96
+	.align 2, 0
+_0800AA90: .4byte 0x30524953
+_0800AA94:
+	adds r0, r4, 0
+_0800AA96:
+	pop {r4}
+	pop {r1}
+	bx r1
+	thumb_func_end UnusedGetSir0Ptr
+
+	thumb_func_start NDS_DecompressRLE
+NDS_DecompressRLE:
+	bx lr
+	thumb_func_end NDS_DecompressRLE
+
+	.align 2, 0 @ Don't pad with nop.

ld_script.txt

@@ -43,6 +43,8 @@ SECTIONS {
         asm/code_80047E8.o(.text);
         src/random.o(.text);
         asm/code_8006218.o(.text);
+        asm/file_system.o(.text);
+        asm/code_800AAA0.o(.text);
         src/main.o(.text);
         asm/code_800B540.o(.text);
         asm/m4a.o(.text);