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fusee-cpp: add basic structural stubs

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Michael Scire 2021-08-21 11:10:13 -07:00 • committed by SciresM
parent 165c926135
commit 5f60bc7186
21 changed files with 1280 additions and 2 deletions
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70
fusee_cpp/program/source/fusee_start.s Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
.section .crt0._ZN3ams6nxboot5StartEv, "ax", %progbits
.arm
.align 5
.global _ZN3ams6nxboot5StartEv
.type _ZN3ams6nxboot5StartEv, %function
_ZN3ams6nxboot5StartEv:
/* Setup all registers as = 0. */
msr cpsr_f, #0xC0
mov r0, #0
mov r1, #0
mov r2, #0
mov r3, #0
mov r4, #0
mov r5, #0
mov r6, #0
mov r7, #0
mov r8, #0
mov r9, #0
mov r10, #0
mov r11, #0
mov r12, #0
/* Setup all modes as pointing to our exception handler. */
msr cpsr_cf, #0xDF
ldr sp, =0x40001000
ldr lr, =_ZN3ams6nxboot16ExceptionHandlerEv
msr cpsr_cf, #0xD2
ldr sp, =0x40001000
ldr lr, =_ZN3ams6nxboot16ExceptionHandlerEv
msr cpsr_cf, #0xD1
ldr sp, =0x40001000
ldr lr, =_ZN3ams6nxboot16ExceptionHandlerEv
msr cpsr_cf, #0xD7
ldr sp, =0x40001000
ldr lr, =_ZN3ams6nxboot16ExceptionHandlerEv
msr cpsr_cf, #0xDB
ldr sp, =0x40001000
ldr lr, =_ZN3ams6nxboot16ExceptionHandlerEv
msr cpsr_cf, #0xD3
ldr sp, =0x40001000
ldr lr, =_ZN3ams6nxboot16ExceptionHandlerEv
/* Perform runtime initialization. */
ldr r0, =__bss_start__
ldr r1, =__bss_end__
bl _ZN3ams6nxboot4crt010InitializeEjj
/* Perform nx boot procedure. */
bl _ZN3ams6nxboot4MainEv