58 lines
1.7 KiB
ArmAsm
58 lines
1.7 KiB
ArmAsm
@ This file is part of Luma3DS
|
|
@ Copyright (C) 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 of GPLv3 applies 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.
|
|
|
|
.arm
|
|
|
|
.section .text.start
|
|
.align 4
|
|
.global _start
|
|
_start:
|
|
ldr sp, =0x27ffe000
|
|
b main
|
|
|
|
.text
|
|
.balign 4
|
|
.global disableMpuAndJumpToEntrypoints
|
|
.type disableMpuAndJumpToEntrypoints, %function
|
|
disableMpuAndJumpToEntrypoints:
|
|
mov r4, r0
|
|
mov r5, r1
|
|
mov r6, r2
|
|
mov r7, r3
|
|
|
|
bl flushCaches
|
|
|
|
@ Disable caches / MPU
|
|
mrc p15, 0, r0, c1, c0, 0 @ read control register
|
|
bic r0, #(1<<12) @ - instruction cache disable
|
|
bic r0, #(1<<2) @ - data cache disable
|
|
bic r0, #(1<<0) @ - mpu disable
|
|
mcr p15, 0, r0, c1, c0, 0 @ write control register
|
|
|
|
@ Set the ARM11 entrypoint
|
|
mov r0, #0x20000000
|
|
str r7, [r0, #-4]
|
|
|
|
@ Jump to the ARM9 entrypoint
|
|
mov r0, r4
|
|
mov r1, r5
|
|
ldr r2, =0xBEEF
|
|
bx r6
|