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[/] [or1k/] [trunk/] [newlib/] [libgloss/] [d30v/] [syscalls.c] - Blame information for rev 1765

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/*
 * syscalls.c -- provide system call support via trap 31
 *
 * Copyright (c) 1997 Cygnus Support
 *
 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions. No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 *
 * Read bytes, using simulator trap 31.
 */
 
#include <stdlib.h>
#include "syscall.h"
 
extern int *__errno(), errno;
 
__asm__ (
"       .globl  __syscall
        .type   __syscall,@function
__syscall:
        trap    31              || nop
        cmpge   f0,r2,0         -> jmp/tx       link
        bra     __set_errno
        .size   __syscall,.-__syscall
");
 
int
__set_errno (int new_errno)
{
  errno = new_errno;
  *(__errno)() = errno;
  return -1;
}
 
void
_exit (int status)
{
  __syscall (status, 0, 0, 0, SYS_exit);
}
 
int
open (const char *filename, int flags, int mode)
{
  return __syscall (filename, flags, mode, 0, SYS_open);
}
 
int
close (int filedes)
{
  return __syscall (filedes, 0, 0, 0, SYS_close);
}
 
int
read (int filedes, void *buffer, size_t length)
{
  return __syscall (filedes, buffer, length, 0, SYS_read);
}
 
int
write (int filedes, void *buffer, size_t length)
{
  return __syscall (filedes, buffer, length, 0, SYS_write);
}
 
long
lseek (int filedes, long offset, int whence)
{
  return __syscall (filedes, offset, whence, 0, SYS_lseek);
}
 
int
unlink (const char *filename)
{
  return __syscall (filename, 0, 0, 0, SYS_unlink);
}
 
int
getpid (void)
{
  return __syscall (0, 0, 0, 0, SYS_getpid);
}
 
int
kill (int signal, int pid)
{
  return __syscall (signal, pid, 0, 0, SYS_kill);
}
 
int
fstat (int filedes, void *info)
{
  return __syscall (filedes, info, 0, 0, SYS_fstat);
}
 
int
__argvlen (void)
{
  return __syscall (0, 0, 0, 0, SYS_argvlen);
}
 
int
__argv (void)
{
  return __syscall (0, 0, 0, 0, SYS_argv);
}
 
int
chdir (char *dir)
{
  return __syscall (dir, 0, 0, 0, SYS_chdir);
}
 
int
stat (const char *filename, void *info)
{
  return __syscall (filename, info, 0, 0, SYS_stat);
}
 
int
chmod (const char *filename, int mode)
{
  return __syscall (filename, mode, 0, 0, SYS_chmod);
}
 
int
utime (const char *filename, void *packet)
{
  return __syscall (filename, packet, 0, 0, SYS_utime);
}
 
time_t
time (time_t *time_ptr)
{
  time_t result;
  result = (time_t) __syscall (time_ptr, 0, 0, 0, SYS_time);
  if (time_ptr != NULL)
    *time_ptr = result;
  return result;
}

Line No.	Rev	Author	Line
1	56	joel	`/*`
2			`* syscalls.c -- provide system call support via trap 31`
3			`*`
4			`* Copyright (c) 1997 Cygnus Support`
5			`*`
6			`* The authors hereby grant permission to use, copy, modify, distribute,`
7			`* and license this software and its documentation for any purpose, provided`
8			`* that existing copyright notices are retained in all copies and that this`
9			`* notice is included verbatim in any distributions. No written agreement,`
10			`* license, or royalty fee is required for any of the authorized uses.`
11			`* Modifications to this software may be copyrighted by their authors`
12			`* and need not follow the licensing terms described here, provided that`
13			`* the new terms are clearly indicated on the first page of each file where`
14			`* they apply.`
15			`*`
16			`* Read bytes, using simulator trap 31.`
17			`*/`
18
19			`#include <stdlib.h>`
20			`#include "syscall.h"`
21
22			`extern int *__errno(), errno;`
23
24			`__asm__ (`
25			`" .globl __syscall`
26			`.type __syscall,@function`
27			`__syscall:`
28			`trap 31 \|\| nop`
29			`cmpge f0,r2,0 -> jmp/tx link`
30			`bra __set_errno`
31			`.size __syscall,.-__syscall`
32			`");`
33
34			`int`
35			`__set_errno (int new_errno)`
36			`{`
37			`errno = new_errno;`
38			`*(__errno)() = errno;`
39			`return -1;`
40			`}`
41
42			`void`
43			`_exit (int status)`
44			`{`
45			`__syscall (status, 0, 0, 0, SYS_exit);`
46			`}`
47
48			`int`
49			`open (const char *filename, int flags, int mode)`
50			`{`
51			`return __syscall (filename, flags, mode, 0, SYS_open);`
52			`}`
53
54			`int`
55			`close (int filedes)`
56			`{`
57			`return __syscall (filedes, 0, 0, 0, SYS_close);`
58			`}`
59
60			`int`
61			`read (int filedes, void *buffer, size_t length)`
62			`{`
63			`return __syscall (filedes, buffer, length, 0, SYS_read);`
64			`}`
65
66			`int`
67			`write (int filedes, void *buffer, size_t length)`
68			`{`
69			`return __syscall (filedes, buffer, length, 0, SYS_write);`
70			`}`
71
72			`long`
73			`lseek (int filedes, long offset, int whence)`
74			`{`
75			`return __syscall (filedes, offset, whence, 0, SYS_lseek);`
76			`}`
77
78			`int`
79			`unlink (const char *filename)`
80			`{`
81			`return __syscall (filename, 0, 0, 0, SYS_unlink);`
82			`}`
83
84			`int`
85			`getpid (void)`
86			`{`
87			`return __syscall (0, 0, 0, 0, SYS_getpid);`
88			`}`
89
90			`int`
91			`kill (int signal, int pid)`
92			`{`
93			`return __syscall (signal, pid, 0, 0, SYS_kill);`
94			`}`
95
96			`int`
97			`fstat (int filedes, void *info)`
98			`{`
99			`return __syscall (filedes, info, 0, 0, SYS_fstat);`
100			`}`
101
102			`int`
103			`__argvlen (void)`
104			`{`
105			`return __syscall (0, 0, 0, 0, SYS_argvlen);`
106			`}`
107
108			`int`
109			`__argv (void)`
110			`{`
111			`return __syscall (0, 0, 0, 0, SYS_argv);`
112			`}`
113
114			`int`
115			`chdir (char *dir)`
116			`{`
117			`return __syscall (dir, 0, 0, 0, SYS_chdir);`
118			`}`
119
120			`int`
121			`stat (const char filename, void info)`
122			`{`
123			`return __syscall (filename, info, 0, 0, SYS_stat);`
124			`}`
125
126			`int`
127			`chmod (const char *filename, int mode)`
128			`{`
129			`return __syscall (filename, mode, 0, 0, SYS_chmod);`
130			`}`
131
132			`int`
133			`utime (const char filename, void packet)`
134			`{`
135			`return __syscall (filename, packet, 0, 0, SYS_utime);`
136			`}`
137
138			`time_t`
139			`time (time_t *time_ptr)`
140			`{`
141			`time_t result;`
142			`result = (time_t) __syscall (time_ptr, 0, 0, 0, SYS_time);`
143			`if (time_ptr != NULL)`
144			`*time_ptr = result;`
145			`return result;`
146			`}`

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[/] [or1k/] [trunk/] [newlib/] [libgloss/] [d30v/] [syscalls.c] - Blame information for rev 1765