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/*
 * Lattice Mico32 system calls.
 * Contributed by Jon Beniston 
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
 
#include 
 
/*
 * System call convention (as implemented in simulator:
 *    - System call number in register r8
 *    - Return value in r1 and r2 (only if 64-bit value)
 *    - errno in r3
 */
 
        .extern errno
 
        .global _write
_write:
        mvi     r8, SYS_write
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _read
_read:
        mvi     r8, SYS_read
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _open
_open:
        mvi     r8, SYS_open
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _close
_close:
        mvi     r8, SYS_close
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _lseek
_lseek:
        mvi     r8, SYS_lseek
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _fstat
_fstat:
        mvi     r8, SYS_fstat
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _stat
_stat:
        mvi     r8, SYS_stat
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _link
_link:
        mvi     r8, SYS_link
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _unlink
_unlink:
        mvi     r8, SYS_unlink
        scall
        mvhi    r4, hi(errno)
        ori     r4, r4, lo(errno)
        sw      (r4+0), r3
        ret
 
        .global _exit
_exit:
        /* This call doesn't return */
        mvi     r8, SYS_exit
        scall

Line No.	Rev	Author	Line
1	148	jeremybenn	`/*`
2			`* Lattice Mico32 system calls.`
3			`* Contributed by Jon Beniston`
4			`*`
5			`* Redistribution and use in source and binary forms, with or without`
6			`* modification, are permitted provided that the following conditions`
7			`* are met:`
8			`* 1. Redistributions of source code must retain the above copyright`
9			`* notice, this list of conditions and the following disclaimer.`
10			`* 2. Redistributions in binary form must reproduce the above copyright`
11			`* notice, this list of conditions and the following disclaimer in the`
12			`* documentation and/or other materials provided with the distribution.`
13			`*`
14			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15			`* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
16			`* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
17			`* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE`
18			`* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
19			`* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
20			`* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
21			`* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT`
22			`* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY`
23			`* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF`
24			`* SUCH DAMAGE.`
25			`*/`
26
27			`#include`
28
29			`/*`
30			`* System call convention (as implemented in simulator:`
31			`* - System call number in register r8`
32			`* - Return value in r1 and r2 (only if 64-bit value)`
33			`* - errno in r3`
34			`*/`
35
36			`.extern errno`
37
38			`.global _write`
39			`_write:`
40			`mvi r8, SYS_write`
41			`scall`
42			`mvhi r4, hi(errno)`
43			`ori r4, r4, lo(errno)`
44			`sw (r4+0), r3`
45			`ret`
46
47			`.global _read`
48			`_read:`
49			`mvi r8, SYS_read`
50			`scall`
51			`mvhi r4, hi(errno)`
52			`ori r4, r4, lo(errno)`
53			`sw (r4+0), r3`
54			`ret`
55
56			`.global _open`
57			`_open:`
58			`mvi r8, SYS_open`
59			`scall`
60			`mvhi r4, hi(errno)`
61			`ori r4, r4, lo(errno)`
62			`sw (r4+0), r3`
63			`ret`
64
65			`.global _close`
66			`_close:`
67			`mvi r8, SYS_close`
68			`scall`
69			`mvhi r4, hi(errno)`
70			`ori r4, r4, lo(errno)`
71			`sw (r4+0), r3`
72			`ret`
73
74			`.global _lseek`
75			`_lseek:`
76			`mvi r8, SYS_lseek`
77			`scall`
78			`mvhi r4, hi(errno)`
79			`ori r4, r4, lo(errno)`
80			`sw (r4+0), r3`
81			`ret`
82
83			`.global _fstat`
84			`_fstat:`
85			`mvi r8, SYS_fstat`
86			`scall`
87			`mvhi r4, hi(errno)`
88			`ori r4, r4, lo(errno)`
89			`sw (r4+0), r3`
90			`ret`
91
92			`.global _stat`
93			`_stat:`
94			`mvi r8, SYS_stat`
95			`scall`
96			`mvhi r4, hi(errno)`
97			`ori r4, r4, lo(errno)`
98			`sw (r4+0), r3`
99			`ret`
100
101			`.global _link`
102			`_link:`
103			`mvi r8, SYS_link`
104			`scall`
105			`mvhi r4, hi(errno)`
106			`ori r4, r4, lo(errno)`
107			`sw (r4+0), r3`
108			`ret`
109
110			`.global _unlink`
111			`_unlink:`
112			`mvi r8, SYS_unlink`
113			`scall`
114			`mvhi r4, hi(errno)`
115			`ori r4, r4, lo(errno)`
116			`sw (r4+0), r3`
117			`ret`
118
119			`.global _exit`
120			`_exit:`
121			`/* This call doesn't return */`
122			`mvi r8, SYS_exit`
123			`scall`

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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [libgloss/] [lm32/] [scall.S] - Blame information for rev 844