mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-20 17:32:13 +00:00
76 lines
1.7 KiB
ArmAsm
76 lines
1.7 KiB
ArmAsm
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/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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.macro CLEAR_GPR_REG_ITER
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mov r\@, #0
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.endm
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.section .reboot.start, "ax", %progbits
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.arm
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.align 5
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.global reboot_start
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.type reboot_start, %function
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reboot_start:
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/* Switch to system mode, mask all interrupts, clear all flags */
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msr cpsr_cxsf, #0xDF
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/* Relocate reboot start to 0x4003E000. */
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ldr r0, =0x4003E000
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adr r1, reboot_start
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cmp r0, r1
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beq 1f
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mov r2, #0x1000
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0:
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ldmia r1!, {r5-r12}
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stmia r0!, {r5-r12}
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subs r2, #0x20
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bne 0b
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ldr r0, =0x4003E000
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adr r1, reboot_start
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adr r2, 1f
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sub r2, r2, r1
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add r2, r2, r0
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bx r2
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1:
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/* Restore our low iram code. */
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ldr r0, =0x40008000
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ldr r1, =0x40030000
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mov r2, #0x8000
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0:
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ldmia r1!, {r5-r12}
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stmia r0!, {r5-r12}
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subs r2, #0x20
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bne 0b
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/* Restore our upper stub code. */
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ldr r0, =0x40010000
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ldr r1, =0x4003D000
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mov r2, #0x1000
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0:
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ldmia r1!, {r5-r12}
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stmia r0!, {r5-r12}
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subs r2, #0x20
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bne 0b
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/* Jump to start. */
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ldr r0, =0x40008000
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bx r0
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0: b 0b
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