Enable boottests

grub-core/tests/boot/kfreebsd.init-x86_64.S

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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 MODE_RDRW 2
+#define FLAGS_NONE 0
+#define SYSCALL_ARCH 165
+#define SYSCALL_OPEN 5
+#define SYSCALL_WRITE 4
+#define SYSCALL_RESET 55
+#define SYSCALL_EXIT 1
+#define SYSCALL_ARCH_IOPL	4
+#define SYSCALL_FSYNC 95
+
+#define RESET_NOSYNC 0x4
+#define RESET_HALT 0x8
+#define RESET_POWEROFF 0x4000
+#define SHUTDOWN_PORT 0x8900
+
+	.section ".init", "ax"
+	.global start,_start
+start:
+_start:
+	/* open.  */
+	movq $SYSCALL_OPEN, %rax
+	leaq device, %rdi
+	movq $MODE_RDRW, %rsi
+	movq $FLAGS_NONE, %rdx
+	syscall
+	movq %rax, %rdi
+
+	/* write.  */
+	leaq message, %rsi
+	movq $SYSCALL_WRITE, %rax
+	movq $(messageend - message), %rdx
+	syscall
+
+	/* fsync.  */
+	movq $SYSCALL_FSYNC, %rax
+	syscall
+
+	/* IOPL.  */
+	movq $SYSCALL_ARCH, %rax
+	movq $SYSCALL_ARCH_IOPL, %rdi
+	leaq iopl_arg, %rsi
+	syscall
+
+	movw $SHUTDOWN_PORT, %dx
+	movb $'S', %al
+	outb %al, %dx
+	movb $'h', %al
+	outb %al, %dx
+	movb $'u', %al
+	outb %al, %dx
+	movb $'t', %al
+	outb %al, %dx
+	movb $'d', %al
+	outb %al, %dx
+	movb $'o', %al
+	outb %al, %dx
+	movb $'w', %al
+	outb %al, %dx
+	movb $'n', %al
+	outb %al, %dx
+	
+	/* shutdown.  */
+	movq $SYSCALL_RESET, %rax
+	movq $(RESET_POWEROFF|RESET_HALT|RESET_NOSYNC), %rdi
+	syscall
+
+	/* exit (1). Shouldn't be reached.  */
+	movq $SYSCALL_EXIT, %rax
+	movq $1, %rdi
+	syscall
+device:
+	.ascii "/dev/console"
+	.byte 0
+message:
+	.ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
+messageend:
+iopl_arg:
+	.long SHUTDOWN_PORT
+	.long 1
+	.long 1