mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-09-22 08:09:00 +00:00
237 lines
5.4 KiB
ArmAsm
237 lines
5.4 KiB
ArmAsm
/*
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* Copyright (c) 2018-2019 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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#include <atmosphere/version.h>
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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 .text.start, "ax", %progbits
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.arm
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.align 5
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.global _start
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.type _start, %function
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_start:
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b _crt0
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.word (_metadata - _start)
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_crt0:
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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 ourselves if necessary */
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ldr r2, =_start
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adr r3, _start
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cmp r2, r3
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beq _relocation_loop_end
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ldr r4, =__bss_start__
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sub r4, r4, r2 /* size >= 32, obviously, and weve declared 32-byte-alignment */
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_relocation_loop:
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ldmia r3!, {r5-r12}
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stmia r2!, {r5-r12}
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subs r4, #0x20
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bne _relocation_loop
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ldr r12, =_relocation_loop_end
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bx r12
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_relocation_loop_end:
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/* Set the stack pointer */
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ldr sp, =__stack_top__
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mov fp, #0
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bl __program_init
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/* Set r0 to r12 to 0 (for debugging) & call main */
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.rept 13
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CLEAR_GPR_REG_ITER
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.endr
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ldr r0, =__program_argc
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ldr r1, =__program_argv
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ldr lr, =__program_exit
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ldr r0, [r0]
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ldr r1, [r1]
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b main
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/* Fusee-secondary header. */
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.align 5
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_metadata:
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.ascii "FSS0"
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.word __total_size__
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.word (_crt0 - _start)
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.word (_content_headers - _start)
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.word (_content_headers_end - _content_headers) / 0x20 /* Number of content headers */
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.word ((ATMOSPHERE_SUPPORTED_HOS_VERSION_MAJOR << 24) | (ATMOSPHERE_SUPPORTED_HOS_VERSION_MINOR << 16) | (ATMOSPHERE_SUPPORTED_HOS_VERSION_MICRO << 8) | (0x0))
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.word ((ATMOSPHERE_RELEASE_VERSION_MAJOR << 24) | (ATMOSPHERE_RELEASE_VERSION_MINOR << 16) | (ATMOSPHERE_RELEASE_VERSION_MICRO << 8) | (0x0))
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#define TO_WORD(x) TO_WORD_(x)
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#define TO_WORD_(x) 0x##x
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#define AMS_GIT_REV_WORD TO_WORD(ATMOSPHERE_GIT_HASH)
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.word AMS_GIT_REV_WORD
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#undef TO_WORD_
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#undef TO_WORD
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#define CONTENT_TYPE_FSP 0
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#define CONTENT_TYPE_EXO 1
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#define CONTENT_TYPE_WBT 2
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#define CONTENT_TYPE_RBT 3
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#define CONTENT_TYPE_SP1 4
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#define CONTENT_TYPE_SP2 5
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#define CONTENT_TYPE_KIP 6
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#define CONTENT_TYPE_BMP 7
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#define CONTENT_TYPE_EMC 8
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_content_headers:
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/* ams_mitm content header */
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.word __ams_mitm_kip_start__
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.word __ams_mitm_kip_size__
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.word CONTENT_TYPE_KIP
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.word 0xCCCCCCCC
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.asciz "ams_mitm"
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.align 5
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/* boot content header */
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.word __boot_kip_start__
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.word __boot_kip_size__
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.word CONTENT_TYPE_KIP
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.word 0xCCCCCCCC
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.asciz "boot"
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.align 5
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/* exosphere content header */
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.word __exosphere_bin_start__
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.word __exosphere_bin_size__
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.word CONTENT_TYPE_EXO
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.word 0xCCCCCCCC
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.asciz "exosphere"
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.align 5
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/* fusee_primary content header */
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.word __fusee_primary_bin_start__
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.word __fusee_primary_bin_size__
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.word CONTENT_TYPE_FSP
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.word 0xCCCCCCCC
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.asciz "fusee_primary"
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.align 5
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/* loader content header */
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.word __loader_kip_start__
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.word __loader_kip_size__
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.word CONTENT_TYPE_KIP
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.word 0xCCCCCCCC
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.asciz "loader"
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.align 5
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/* lp0fw content header */
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.word __lp0fw_bin_start__
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.word __lp0fw_bin_size__
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.word CONTENT_TYPE_WBT
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.word 0xCCCCCCCC
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.asciz "lp0fw"
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.align 5
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/* pm content header */
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.word __pm_kip_start__
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.word __pm_kip_size__
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.word CONTENT_TYPE_KIP
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.word 0xCCCCCCCC
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.asciz "pm"
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.align 5
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/* rebootstub content header */
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.word __rebootstub_bin_start__
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.word __rebootstub_bin_size__
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.word CONTENT_TYPE_RBT
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.word 0xCCCCCCCC
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.asciz "rebootstub"
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.align 5
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/* sept_primary content header */
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.word __sept_primary_bin_start__
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.word __sept_primary_bin_size__
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.word CONTENT_TYPE_SP1
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.word 0xCCCCCCCC
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.asciz "sept_primary"
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.align 5
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/* sept_secondary 00 content header */
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.word __sept_secondary_00_enc_start__
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.word __sept_secondary_00_enc_size__
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.word CONTENT_TYPE_SP2
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.word 0xCCCCCCCC
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.asciz "septsecondary00"
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.align 5
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/* sept_secondary 01 content header */
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.word __sept_secondary_01_enc_start__
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.word __sept_secondary_01_enc_size__
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.word CONTENT_TYPE_SP2
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.word 0xCCCCCCCC
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.asciz "septsecondary01"
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.align 5
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/* sm content header */
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.word __sm_kip_start__
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.word __sm_kip_size__
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.word CONTENT_TYPE_KIP
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.word 0xCCCCCCCC
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.asciz "sm"
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.align 5
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/* spl content header */
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.word __spl_kip_start__
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.word __spl_kip_size__
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.word CONTENT_TYPE_KIP
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.word 0xCCCCCCCC
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.asciz "spl"
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.align 5
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/* emummc content header */
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.word __emummc_kip_start__
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.word __emummc_kip_size__
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.word CONTENT_TYPE_EMC
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.word 0xCCCCCCCC
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.asciz "emummc"
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.align 5
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/* splash_screen content header */
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.word __splash_screen_bmp_start__
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.word __splash_screen_bmp_size__
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.word CONTENT_TYPE_BMP
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.word 0xCCCCCCCC
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.asciz "splash_screen"
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.align 5
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_content_headers_end:
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/* No need to include this in normal programs: */
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.section .chainloader.text.start, "ax", %progbits
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.arm
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.align 5
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.global relocate_and_chainload
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.type relocate_and_chainload, %function
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relocate_and_chainload:
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ldr sp, =__stack_top__
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b relocate_and_chainload_main
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.section .nxboot.text.start, "ax", %progbits
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.arm
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.align 5
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.global nxboot
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.type nxboot, %function
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nxboot:
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ldr sp, =__stack_top__
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b nxboot_finish |