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
|
/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2021 W. J. van der Laan <laanwj@protonmail.com>
*
* This file is part of GNU Mes.
*
* GNU Mes 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 3 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mes/lib.h>
#include <stdarg.h>
int
//stdarg1 (long one, ...)
stdarg1 (long *one, ...)
{
va_list ap;
char c;
int r;
va_start (ap, one);
#if __GNUC__ && __x86_64__ && !SYSTEM_LIBC
#define __FUNCTION_ARGS 1
ap += (__FOO_VARARGS + (__FUNCTION_ARGS << 1)) << 3;
#undef __FUNCTION_ARGS
#endif
c = va_arg (ap, int);
r = c;
eputs ("c:");
eputs (itoa (c));
eputs ("\n");
va_end (ap);
return r;
}
int
///stdarg2 (long one, long two, ...)
stdarg2 (long *one, long *two, ...)
{
va_list ap;
char c;
int r;
va_start (ap, two);
#if __GNUC__ && __x86_64__ && !SYSTEM_LIBC
#define __FUNCTION_ARGS 2
ap += (__FOO_VARARGS + (__FUNCTION_ARGS << 1)) << 3;
#undef __FUNCTION_ARGS
#endif
c = va_arg (ap, int);
r = c;
eputs ("c:");
eputs (itoa (c));
eputs ("\n");
va_end (ap);
return r;
}
int
//stdarg3 (long one, long two, long three, ...)
stdarg3 (long *one, long *two, long *three, ...)
{
va_list ap;
char c;
int r;
va_start (ap, three);
#if __GNUC__ && __x86_64__ && !SYSTEM_LIBC
#define __FUNCTION_ARGS 3
ap += (__FOO_VARARGS + (__FUNCTION_ARGS << 1)) << 3;
#undef __FUNCTION_ARGS
#endif
c = va_arg (ap, int);
r = c;
eputs ("c:");
eputs (itoa (c));
eputs ("\n");
va_end (ap);
return r;
}
int
main ()
{
char c = 'm';
char buf[20];
if (stdarg1 (-1, c) != c)
return 1;
c = 'w';
if (stdarg2 (-1, -2, c) != c)
return 2;
c = 'g';
if (stdarg3 (-1, -2, -3, c) != c)
return 3;
return 0;
}
|
