59 lines
1.5 KiB
ArmAsm
59 lines
1.5 KiB
ArmAsm
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define SYSCALL_WRITE 4004
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#define SYSCALL_RESET 4088
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#define SYSCALL_EXIT 4001
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#define STDOUT 1
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#define SHUTDOWN_MAGIC1 0xfee1dead
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#define SHUTDOWN_MAGIC2 0x28121969
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#define SHUTDOWN_MAGIC3 0x4321fedc
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.text
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.global start, _start, __start
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__start:
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_start:
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start:
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/* write. */
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li $v0, SYSCALL_WRITE
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li $a0, STDOUT
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lui $a1, %hi(message)
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addiu $a1, %lo(message)
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lui $a2, %hi(messageend)
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addiu $a2, %lo(messageend)
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subu $a2, $a2, $a1
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syscall
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/* shutdown. */
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li $v0, SYSCALL_RESET
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li $a0, SHUTDOWN_MAGIC1
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li $a1, SHUTDOWN_MAGIC2
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li $a2, SHUTDOWN_MAGIC3
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syscall
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/* exit(1). Shouldn't be reached. */
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li $v0, SYSCALL_EXIT
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li $a0, 1
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syscall
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.data
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message:
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.ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
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messageend:
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