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- /*
- * GRUB -- GRand Unified Bootloader
- * Copyright (C) 2010 Free Software Foundation, Inc.
- *
- * GRUB 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.
- *
- * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
- */
- #define SYSCALL_WRITE 4
- #define SYSCALL_RESET 88
- #define SYSCALL_IOPL 110
- #define SYSCALL_EXIT 1
- #define SYSCALL_INT 0x80
- #define STDOUT 1
- #define SHUTDOWN_MAGIC1 0xfee1dead
- #define SHUTDOWN_MAGIC2 0x28121969
- #define SHUTDOWN_MAGIC3 0x4321fedc
- .text
- .global start, _start
- _start:
- start:
- /* write. */
- movl $SYSCALL_WRITE, %eax
- movl $STDOUT, %ebx
- leal message, %ecx
- movl $(messageend-message), %edx
- int $SYSCALL_INT
- movl $SYSCALL_IOPL, %eax
- movl $3, %ebx
- int $SYSCALL_INT
- #include "qemu-shutdown-x86.S"
-
- /* shutdown. */
- movl $SYSCALL_RESET, %eax
- movl $SHUTDOWN_MAGIC1, %ebx
- movl $SHUTDOWN_MAGIC2, %ecx
- movl $SHUTDOWN_MAGIC3, %edx
- int $SYSCALL_INT
- /* exit (1). Shouldn't be reached. */
- movl $SYSCALL_EXIT, %eax
- movl $1, %ebx
- int $SYSCALL_INT
- .data
- message:
- .ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
- messageend:
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