1# $NetBSD: powerpc.s,v 1.1 2011/11/12 01:18:41 jmmv Exp $
2#
3# Copyright (c) 2011 The NetBSD Foundation, Inc.
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met:
9#
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15#
16# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
19# PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
20# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28
29# ------------------------------------------------------------------------
30
31.section ".note.netbsd.ident", "a"
32          # This ELF section is used by the kernel to determine, among other
33          # things, the system call interface used by the binary.
34          #
35          # See http://www.netbsd.org/docs/kernel/elf-notes.html for more
36          # details.
37
38          .int 7                        # Length of the OS name field below.
39          .int 4                        # Length of the description field below.
40          .int 0x01           # The type of the note: NetBSD OS Version.
41          .ascii    "NetBSD\0\0"        # The OS name, padded to 8 bytes.
42          .int 0x23b419a0               # The description value; 5.99.56.
43
44# ------------------------------------------------------------------------
45
46.section ".data"
47
48message:
49          .ascii "Hello, world!\n"
50          .set MESSAGE_SIZE, . - message
51
52# ------------------------------------------------------------------------
53
54.section ".text"
55
56          .balign 4
57
58          .globl _start
59          .type _start, @function
60_start:
61          # write(STDOUT_FILENO, message, MESSAGE_SIZE)
62          li        %r0, 4                        # r0: write(2) syscall number.
63          li        %r3, 1                        # r3: first argument.
64          addis     %r4, %r0, message@h # r4: second argument.
65          ori       %r4, %r4, message@l
66          li        %r5, MESSAGE_SIZE   # r5: third argument.
67          sc
68
69          # exit(EXIT_SUCCESS)
70          li        %r0, 1                        # r0: exit(2) syscall number.
71          li        %r3, 0                        # r3: first argument.
72          sc
73
74    .size _start, . - _start
75