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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/* Area: ffi_call
Purpose: Test passing struct in variable argument lists.
Limitations: none.
PR: none.
Originator: ARM Ltd. */
/* { dg-do run } */
/* { dg-output "" { xfail avr32*-*-* } } */
#include "ffitest.h"
#include <stdarg.h>
struct small_tag
{
unsigned char a;
unsigned char b;
};
struct large_tag
{
unsigned a;
unsigned b;
unsigned c;
unsigned d;
unsigned e;
};
static int
test_fn (int n, ...)
{
va_list ap;
struct small_tag s1;
struct small_tag s2;
struct large_tag l;
unsigned char uc;
signed char sc;
unsigned short us;
signed short ss;
unsigned int ui;
signed int si;
unsigned long ul;
signed long sl;
float f;
double d;
va_start (ap, n);
s1 = va_arg (ap, struct small_tag);
l = va_arg (ap, struct large_tag);
s2 = va_arg (ap, struct small_tag);
uc = va_arg (ap, unsigned);
sc = va_arg (ap, signed);
us = va_arg (ap, unsigned);
ss = va_arg (ap, signed);
ui = va_arg (ap, unsigned int);
si = va_arg (ap, signed int);
ul = va_arg (ap, unsigned long);
sl = va_arg (ap, signed long);
f = va_arg (ap, double); /* C standard promotes float->double
when anonymous */
d = va_arg (ap, double);
printf ("%u %u %u %u %u %u %u %u %u uc=%u sc=%d %u %d %u %d %lu %ld %f %f\n",
s1.a, s1.b, l.a, l.b, l.c, l.d, l.e,
s2.a, s2.b,
uc, sc,
us, ss,
ui, si,
ul, sl,
f, d);
va_end (ap);
return n + 1;
}
int
main (void)
{
ffi_cif cif;
void* args[15];
ffi_type* arg_types[15];
ffi_type s_type;
ffi_type *s_type_elements[3];
ffi_type l_type;
ffi_type *l_type_elements[6];
struct small_tag s1;
struct small_tag s2;
struct large_tag l1;
int n;
ffi_arg res;
unsigned char uc;
signed char sc;
unsigned short us;
signed short ss;
unsigned int ui;
signed int si;
unsigned long ul;
signed long sl;
double d1;
double f1;
s_type.size = 0;
s_type.alignment = 0;
s_type.type = FFI_TYPE_STRUCT;
s_type.elements = s_type_elements;
s_type_elements[0] = &ffi_type_uchar;
s_type_elements[1] = &ffi_type_uchar;
s_type_elements[2] = NULL;
l_type.size = 0;
l_type.alignment = 0;
l_type.type = FFI_TYPE_STRUCT;
l_type.elements = l_type_elements;
l_type_elements[0] = &ffi_type_uint;
l_type_elements[1] = &ffi_type_uint;
l_type_elements[2] = &ffi_type_uint;
l_type_elements[3] = &ffi_type_uint;
l_type_elements[4] = &ffi_type_uint;
l_type_elements[5] = NULL;
arg_types[0] = &ffi_type_sint;
arg_types[1] = &s_type;
arg_types[2] = &l_type;
arg_types[3] = &s_type;
arg_types[4] = &ffi_type_uchar;
arg_types[5] = &ffi_type_schar;
arg_types[6] = &ffi_type_ushort;
arg_types[7] = &ffi_type_sshort;
arg_types[8] = &ffi_type_uint;
arg_types[9] = &ffi_type_sint;
arg_types[10] = &ffi_type_ulong;
arg_types[11] = &ffi_type_slong;
arg_types[12] = &ffi_type_double;
arg_types[13] = &ffi_type_double;
arg_types[14] = NULL;
CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 14, &ffi_type_sint, arg_types) == FFI_OK);
s1.a = 5;
s1.b = 6;
l1.a = 10;
l1.b = 11;
l1.c = 12;
l1.d = 13;
l1.e = 14;
s2.a = 7;
s2.b = 8;
n = 41;
uc = 9;
sc = 10;
us = 11;
ss = 12;
ui = 13;
si = 14;
ul = 15;
sl = 16;
f1 = 2.12;
d1 = 3.13;
args[0] = &n;
args[1] = &s1;
args[2] = &l1;
args[3] = &s2;
args[4] = &uc;
args[5] = ≻
args[6] = &us;
args[7] = &ss;
args[8] = &ui;
args[9] = &si;
args[10] = &ul;
args[11] = &sl;
args[12] = &f1;
args[13] = &d1;
args[14] = NULL;
ffi_call(&cif, FFI_FN(test_fn), &res, args);
/* { dg-output "5 6 10 11 12 13 14 7 8 uc=9 sc=10 11 12 13 14 15 16 2.120000 3.130000" } */
printf("res: %d\n", (int) res);
/* { dg-output "\nres: 42" } */
return 0;
}
|
