1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* FR30 system call emulation code
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sys/stat.h>
#include "../syscall.h"
int
_read (file, ptr, len)
int file;
char * ptr;
int len;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_read) : "r0");
asm ("int #10");
return;
}
int
_lseek (file, ptr, dir)
int file;
int ptr;
int dir;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_lseek) : "r0");
asm ("int #10");
return;
}
int
_write (file, ptr, len)
int file;
char * ptr;
int len;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_write) : "r0");
asm ("int #10");
return;
}
int
_open (path, flags)
const char * path;
int flags;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_open) : "r0");
asm ("int #10");
return;
}
int
_close (file)
int file;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_close) : "r0");
asm ("int #10");
return 0;
}
void
_exit (n)
int n;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_exit) : "r0");
asm ("int #10");
}
caddr_t
_sbrk (incr)
int incr;
{
extern char end asm ("_end"); /* Defined by the linker */
extern int __stack; /* Defined by linker script. */
static char * heap_end;
char * prev_heap_end;
if (heap_end == NULL)
heap_end = & end;
prev_heap_end = heap_end;
#if 0
if (heap_end + incr > __stack)
{
_write ( 1, "_sbrk: Heap and stack collision\n", 32);
abort ();
}
#endif
heap_end += incr;
return (caddr_t) prev_heap_end;
}
int
_fstat (file, st)
int file;
struct stat * st;
{
st->st_mode = S_IFCHR;
return 0;
}
int
_unlink ()
{
return -1;
}
int
_isatty (fd)
int fd;
{
return 0;
}
int
_raise ()
{
return 0;
}
int
_times ()
{
return 0;
}
int
_kill (pid, sig)
int pid;
int sig;
{
return 0;
}
int
_getpid (void)
{
return 0;
}
|
