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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 | 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 |
|
52 | jal __main |
54 | # is needed. |
53 | nop |
- | |
54 | 55 | ||
55 | jal main |
56 | jal __main |
56 | nop |
57 | 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 |