/* * 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 . */ #define SYSCALL_WRITE 1 #define SYSCALL_RESET 169 #define SYSCALL_IOPL 172 #define SYSCALL_EXIT 60 #define STDOUT 1 #define SHUTDOWN_MAGIC1 0xfee1dead #define SHUTDOWN_MAGIC2 0x28121969 #define SHUTDOWN_MAGIC3 0x4321fedc .text .global start, _start _start: start: /* write. */ movq $SYSCALL_WRITE, %rax movq $STDOUT, %rdi leaq message, %rsi movq $(messageend-message), %rdx syscall movq $SYSCALL_IOPL, %rax movq $3, %rdi syscall #include "qemu-shutdown-x86.S" /* shutdown. */ movq $SYSCALL_RESET, %rax movq $SHUTDOWN_MAGIC1, %rdi movq $SHUTDOWN_MAGIC2, %rsi movq $SHUTDOWN_MAGIC3, %rdx syscall /* exit(1). Shouldn't be reached. */ movq $SYSCALL_EXIT, %rax movq $1, %rdi syscall .data message: .ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n" messageend: