@ This file is part of Luma3DS
@ Copyright (C) 2016-2018 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
