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Luma3DS-3GX/k11_extension/source/start.s

75 lines
2.1 KiB
ArmAsm

@ This file is part of Luma3DS
@ Copyright (C) 2016-2020 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.
.section .text.start, "ax", %progbits
.balign 4
.global _start
_start:
b start
b startPhys
b _bindSGI0Hook
b configHook
b undefinedInstructionHandler
b svcHandler
b prefetchAbortHandler
b dataAbortHandler
.word __end__
.word kExtParameters
.word 1 @ enableUserExceptionHandlersForCPUExc
b KThread__DebugReschedule
start:
@ Only core0 executes this, the other cores are running coreBarrier
@ Skipped instruction:
str r1, [r4, #0x8]
push {r0-r12, lr}
bl __libc_init_array
sub r0, r4, #8
sub r1, r8, #0x8000
bl main
pop {r0-r12, pc}
startPhys:
push {r0-r12, lr}
mrc p15, 0, r0, c0, c0, 5 @ CPUID register
and r0, #3
mov r1, r2
bl relocateAndSetupMMU
pop {r0-r12, lr}
mov r12, #0x20000000 @ instruction that has been patched
bx lr
_bindSGI0Hook:
push {r0-r12, lr}
bl bindSGI0Hook
pop {r0-r12, pc}