Subversion Repositories HelenOS

Rev

Rev 3424 | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3424 Rev 3425
1 
#
 1 
#
2 
# Copyright (c) 2005 Martin Decky
 2 
# Copyright (c) 2005 Martin Decky
3 
# All rights reserved.
 3 
# All rights reserved.
4 
#
 4 
#
5 
# Redistribution and use in source and binary forms, with or without
 5 
# Redistribution and use in source and binary forms, with or without
6 
# modification, are permitted provided that the following conditions
 6 
# modification, are permitted provided that the following conditions
7 
# are met:
 7 
# are met:
8 
#
 8 
#
9 
# - Redistributions of source code must retain the above copyright
 9 
# - Redistributions of source code must retain the above copyright
10 
#   notice, this list of conditions and the following disclaimer.
 10 
#   notice, this list of conditions and the following disclaimer.
11 
# - Redistributions in binary form must reproduce the above copyright
 11 
# - Redistributions in binary form must reproduce the above copyright
12 
#   notice, this list of conditions and the following disclaimer in the
 12 
#   notice, this list of conditions and the following disclaimer in the
13 
#   documentation and/or other materials provided with the distribution.
 13 
#   documentation and/or other materials provided with the distribution.
14 
# - The name of the author may not be used to endorse or promote products
 14 
# - The name of the author may not be used to endorse or promote products
15 
#   derived from this software without specific prior written permission.
 15 
#   derived from this software without specific prior written permission.
16 
#
 16 
#
17 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 17 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 18 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 19 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 20 
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 21 
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 22 
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 23 
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 24 
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
#
 27 
#
28 
 
 28 
 
29 
.text
 29 
.text
30 
.section .init, "ax"
 30 
.section .init, "ax"
31 
.global __entry
 31 
.global __entry
32 
.global __entry_driver
 32 
.global __entry_driver
33 
.set noreorder
 33 
.set noreorder
34 
.option pic2
 34 
.option pic2
35 
 
 35 
 
36 
## User-space task entry point
 36 
## User-space task entry point
37 
#
 37 
#
- 
 
 38 
# $a0 ($4) contains the PCB pointer
38 
#
 39 
#
39 
.ent __entry
 40 
.ent __entry
40 
__entry:
 41 
__entry:
41 
	.frame $sp, 32, $31
 42 
	.frame $sp, 32, $31
42 
	.cpload $25
 43 
	.cpload $25
43
- 
 
44
44 
 
45 
	# Mips o32 may store its arguments on stack, make space (16 bytes),
 45 
	# Mips o32 may store its arguments on stack, make space (16 bytes),
46 
	# so that it could work with -O0
 46 
	# so that it could work with -O0
47 
	# Make space additional 16 bytes for the stack frame
 47 
	# Make space additional 16 bytes for the stack frame
48 
 
 48 
 
49 
	addiu $sp, -32
 49 
	addiu $sp, -32
50 
	.cprestore 16   # Allow PIC code
 50 
	.cprestore 16   # Allow PIC code
- 
 
 51 
 
- 
 
 52 
	# Pass pcb_ptr to __main() as the first argument. pcb_ptr is already
- 
 
 53 
	# in $a0. As the first argument is passed in $a0, no operation
- 
 
 54 
	# is needed.
51
55 
 
52 
	jal __main
 56 
	jal __main
53 
	nop
 57 
	nop
54
- 
 
55 
	jal main
 - 
 
56 
	nop
 - 
 
57
58
58 
	jal __exit
 59 
	jal __exit
59 
	nop
 60 
	nop
60 
.end
 61 
.end
61 
 
 62 
 
62 
# Alignment of output section data to 0x4000
 63 
# Alignment of output section data to 0x4000
63 
.section .data
 64 
.section .data
64 
.align 14
 65 
.align 14
65 
 
 66