44 lines
1.6 KiB
ArmAsm
44 lines
1.6 KiB
ArmAsm
@ This file is part of Luma3DS
|
|
@ Copyright (C) 2016-2017 Aurora Wright, TuxSH
|
|
@
|
|
@ This program is free software: you can redistribute it and/or modify
|
|
@ it under the terms of the GNU General Public License as published by
|
|
@ the Free Software Foundation, either version 3 of the License, or
|
|
@ (at your option) any later version.
|
|
@
|
|
@ This program is distributed in the hope that it will be useful,
|
|
@ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
@ GNU General Public License for more details.
|
|
@
|
|
@ You should have received a copy of the GNU General Public License
|
|
@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
@
|
|
@ Additional Terms 7.b and 7.c of GPLv3 apply to this file:
|
|
@ * Requiring preservation of specified reasonable legal notices or
|
|
@ author attributions in that material or in the Appropriate Legal
|
|
@ Notices displayed by works containing it.
|
|
@ * Prohibiting misrepresentation of the origin of that material,
|
|
@ or requiring that modified versions of such material be marked in
|
|
@ reasonable ways as different from the original version.
|
|
|
|
.text
|
|
.arm
|
|
.balign 4
|
|
|
|
.global Backdoor
|
|
.type Backdoor, %function
|
|
Backdoor:
|
|
@ Nintendo's code
|
|
bic r1, sp, #0xff
|
|
orr r1, r1, #0xf00
|
|
add r1, r1, #0x28 @ get user stack.
|
|
|
|
ldr r2, [r1]
|
|
stmdb r2!, {sp, lr}
|
|
mov sp, r2 @ sp_svc = sp_usr. You'll get nice crashes if an interrupt or context switch occurs during svcBackdoor
|
|
blx r0
|
|
pop {r0, r1}
|
|
mov sp, r0
|
|
bx r1
|