decompile unreferenced save functions

2 files changed, 84 insertions, 181 deletions

diff --git a/asm/rom_81258BC.s b/asm/rom_81258BC.s
index 8b44e6ead..70a9abbd7 100644
--- a/asm/rom_81258BC.s
+++ b/asm/rom_81258BC.s
@@ -6,187 +6,6 @@
 
 	.text
 
-	thumb_func_start unref_sub_8125F4C
-unref_sub_8125F4C: @ 8125F4C
-	push {r4-r6,lr}
-	adds r4, r0, 0
-	adds r2, r4, 0
-	movs r1, 0
-	ldr r6, _08125F88
-	movs r5, 0
-	ldr r3, _08125F8C
-_08125F5A:
-	adds r0, r2, r1
-	strb r5, [r0]
-	adds r0, r1, 0x1
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, r3
-	bls _08125F5A
-	ldrb r0, [r6]
-	movs r3, 0x80
-	lsls r3, 5
-	movs r1, 0
-	adds r2, r4, 0
-	bl ReadFlash
-	ldr r1, _08125F90
-	adds r0, r4, r1
-	ldr r1, [r0]
-	ldr r0, _08125F94
-	cmp r1, r0
-	bne _08125F98
-	movs r0, 0x1
-	b _08125F9A
-	.align 2, 0
-_08125F88: .4byte gUnknown_08401E24
-_08125F8C: .4byte 0x00000fff
-_08125F90: .4byte 0x00000ff4
-_08125F94: .4byte 0x08012025 @ TODO: figure out what this represents
-_08125F98:
-	movs r0, 0
-_08125F9A:
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end unref_sub_8125F4C
-
-	thumb_func_start unref_sub_8125FA0
-unref_sub_8125FA0: @ 8125FA0
-	push {r4-r7,lr}
-	movs r0, 0
-	bl sub_8125D44
-	lsls r0, 24
-	lsrs r5, r0, 24
-	movs r4, 0
-	ldr r7, _08125FD0
-	ldr r6, _08125FD4
-_08125FB2:
-	adds r0, r4, r6
-	ldrb r0, [r0]
-	ldr r1, [r7]
-	bl _call_via_r1
-	adds r0, r4, 0x1
-	lsls r0, 16
-	lsrs r4, r0, 16
-	cmp r4, 0x1
-	bls _08125FB2
-	cmp r5, 0xFF
-	bne _08125FD8
-	movs r0, 0x3
-	b _08125FE8
-	.align 2, 0
-_08125FD0: .4byte EraseFlashSector
-_08125FD4: .4byte gUnknown_08401E24
-_08125FD8:
-	cmp r5, 0x3
-	beq _08125FE6
-	movs r0, 0
-	bl sub_8125EC8
-	movs r0, 0x1
-	b _08125FE8
-_08125FE6:
-	movs r0, 0x2
-_08125FE8:
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end unref_sub_8125FA0
-
-	thumb_func_start unref_sub_8125FF0
-unref_sub_8125FF0: @ 8125FF0
-	push {r4-r7,lr}
-	adds r6, r0, 0
-	lsls r1, 16
-	lsrs r3, r1, 16
-	ldr r4, _08126048
-	movs r2, 0
-	ldr r7, _0812604C
-	movs r5, 0
-	ldr r1, _08126050
-_08126002:
-	adds r0, r4, r2
-	strb r5, [r0]
-	adds r0, r2, 0x1
-	lsls r0, 16
-	lsrs r2, r0, 16
-	cmp r2, r1
-	bls _08126002
-	ldr r0, _08126054
-	adds r1, r4, r0
-	ldr r0, _08126058
-	str r0, [r1]
-	movs r2, 0
-	cmp r2, r3
-	bcs _08126030
-_0812601E:
-	adds r1, r4, r2
-	adds r0, r6, r2
-	ldrb r0, [r0]
-	strb r0, [r1]
-	adds r0, r2, 0x1
-	lsls r0, 16
-	lsrs r2, r0, 16
-	cmp r2, r3
-	bcc _0812601E
-_08126030:
-	ldrb r0, [r7]
-	movs r2, 0x80
-	lsls r2, 5
-	adds r1, r4, 0
-	bl ProgramFlashSectorAndVerifyNBytes
-	ldr r1, _0812605C
-	str r0, [r1]
-	cmp r0, 0
-	bne _08126060
-	movs r0, 0x1
-	b _08126062
-	.align 2, 0
-_08126048: .4byte 0x02000000
-_0812604C: .4byte gUnknown_08401E24
-_08126050: .4byte 0x00000fff
-_08126054: .4byte 0x00000ff4
-_08126058: .4byte 0x08012025 @ TODO: figure out what this represents
-_0812605C: .4byte gUnknown_02039284
-_08126060:
-	movs r0, 0xFF
-_08126062:
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end unref_sub_8125FF0
-
-	thumb_func_start unref_sub_8126068
-unref_sub_8126068: @ 8126068
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	bl ProgramFlashSectorAndVerify
-	cmp r0, 0
-	bne _0812607A
-	movs r0, 0x1
-	b _0812607C
-_0812607A:
-	movs r0, 0xFF
-_0812607C:
-	pop {r1}
-	bx r1
-	thumb_func_end unref_sub_8126068
-
-	thumb_func_start unref_sub_8126080
-unref_sub_8126080: @ 8126080
-	push {lr}
-	adds r2, r1, 0
-	lsls r0, 24
-	lsrs r0, 24
-	movs r3, 0x80
-	lsls r3, 5
-	movs r1, 0
-	bl ReadFlash
-	movs r0, 0x1
-	pop {r1}
-	bx r1
-	thumb_func_end unref_sub_8126080
-
 	thumb_func_start sub_8126098
 sub_8126098: @ 8126098
 	push {r4,lr}
diff --git a/src/save.c b/src/save.c
index e448ab079..456bfdbe4 100644
--- a/src/save.c
+++ b/src/save.c
@@ -16,11 +16,20 @@ struct SaveSection
     u32 counter;
 };
 
+struct UnkSaveSection
+{
+    u8 data[0xFF4];
+    u32 unknown;
+};
+
 extern u32 sub_8053108(u8);
 extern void sav12_xor_increment(u8);
+extern u32 ProgramFlashSectorAndVerifyNBytes(u16 sectorNum, u8 *src, u32 n);
 
 extern struct SaveSection unk_2000000;
 
+extern u32 gUnknown_02039284;
+
 extern u32 gUnknown_3004820;
 
 extern u16 gUnknown_03005E9C;
@@ -35,6 +44,7 @@ extern u32 gUnknown_03005EBC;
 
 extern struct SaveSectionLocation gSaveSectionLocations[];
 extern struct SaveSectionLocation gHallOfFameSaveSectionLocations[];
+extern u8 gUnknown_08401E24[];
 
 u8 sub_81252D8(u16, struct SaveSectionLocation *);
 u8 sub_8125440(u8, u8 *);
@@ -701,3 +711,77 @@ u8 sub_8125EC8(u8 a1)
 
     return result;
 }
+
+bool8 unref_sub_8125F4C(struct UnkSaveSection *a1)
+{
+    u16 i;
+    char *raw = (char *)a1;
+
+    for (i = 0; i < 0x1000; i++)
+        raw[i] = 0;
+
+    ReadFlash(gUnknown_08401E24[0], 0, a1, 4096);
+
+    if (a1->unknown != 0x8012025)
+        return FALSE;
+
+    return TRUE;
+}
+
+u8 unref_sub_8125FA0(void)
+{
+    u16 i;
+    u8 v0 = sub_8125D44(0);
+
+    for (i = 0; i < 2; i++)
+        EraseFlashSector(gUnknown_08401E24[i]);
+
+    if (v0 == 255)
+    {
+        return 3;
+    }
+    else if (v0 == 3)
+    {
+        return 2;
+    }
+    else
+    {
+        sub_8125EC8(0);
+        return 1;
+    }
+}
+
+u8 unref_sub_8125FF0(u8 *data, u16 size)
+{
+    u16 i;
+    struct UnkSaveSection *section = (struct UnkSaveSection *)&unk_2000000;
+
+    for (i = 0; i < 0x1000; i++)
+        ((char *)section)[i] = 0;
+
+    section->unknown = 0x8012025;
+
+    for (i = 0; i < size; i++)
+        section->data[i] = data[i];
+
+    gUnknown_02039284 = ProgramFlashSectorAndVerifyNBytes(gUnknown_08401E24[0], (u8 *)section, 0x1000);
+
+    if (gUnknown_02039284)
+        return 255;
+    else
+        return 1;
+}
+
+u8 unref_sub_8126068(u8 sector, u8 *data, u32 size)
+{
+    if (ProgramFlashSectorAndVerify(sector, data, size))
+        return 255;
+    else
+        return 1;
+}
+
+u8 unref_sub_8126080(u8 sector, u8 *data)
+{
+    ReadFlash(sector, 0, data, 0x1000);
+    return 1;
+}