Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/va_struct3.c Source File

Ruby 3.0.5p211 (2022-11-24 revision ba5cf0f7c52d4d35cc6a173c89eda98ceffa2dcf)

va_struct3.c
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1/* Area: ffi_call
2 Purpose: Test passing struct in variable argument lists.
3 Limitations: none.
4 PR: none.
5 Originator: ARM Ltd. */
6
7/* { dg-do run } */
8/* { dg-output "" { xfail avr32*-*-* } } */
9
10#include "ffitest.h"
11#include <stdarg.h>
12
13struct small_tag
14{
15 unsigned char a;
16 unsigned char b;
17};
18
19struct large_tag
20{
21 unsigned a;
22 unsigned b;
23 unsigned c;
24 unsigned d;
25 unsigned e;
26};
27
28static struct large_tag
29test_fn (int n, ...)
30{
31 va_list ap;
32 struct small_tag s1;
33 struct small_tag s2;
34 struct large_tag l;
35
36 va_start (ap, n);
37 s1 = va_arg (ap, struct small_tag);
38 l = va_arg (ap, struct large_tag);
39 s2 = va_arg (ap, struct small_tag);
40 printf ("%u %u %u %u %u %u %u %u %u\n", s1.a, s1.b, l.a, l.b, l.c, l.d, l.e,
41 s2.a, s2.b);
42 va_end (ap);
43 l.a += s1.a;
44 l.b += s1.b;
45 l.c += s2.a;
46 l.d += s2.b;
47 return l;
48}
49
50int
51main (void)
52{
53 ffi_cif cif;
54 void* args[5];
55 ffi_type* arg_types[5];
56
57 ffi_type s_type;
58 ffi_type *s_type_elements[3];
59
60 ffi_type l_type;
61 ffi_type *l_type_elements[6];
62
63 struct small_tag s1;
64 struct small_tag s2;
65 struct large_tag l1;
66
67 int n;
68 struct large_tag res;
69
70 s_type.size = 0;
71 s_type.alignment = 0;
72 s_type.type = FFI_TYPE_STRUCT;
73 s_type.elements = s_type_elements;
74
75 s_type_elements[0] = &ffi_type_uchar;
76 s_type_elements[1] = &ffi_type_uchar;
77 s_type_elements[2] = NULL;
78
79 l_type.size = 0;
80 l_type.alignment = 0;
81 l_type.type = FFI_TYPE_STRUCT;
82 l_type.elements = l_type_elements;
83
84 l_type_elements[0] = &ffi_type_uint;
85 l_type_elements[1] = &ffi_type_uint;
86 l_type_elements[2] = &ffi_type_uint;
87 l_type_elements[3] = &ffi_type_uint;
88 l_type_elements[4] = &ffi_type_uint;
89 l_type_elements[5] = NULL;
90
91 arg_types[0] = &ffi_type_sint;
92 arg_types[1] = &s_type;
93 arg_types[2] = &l_type;
94 arg_types[3] = &s_type;
95 arg_types[4] = NULL;
96
97 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 4, &l_type, arg_types) == FFI_OK);
98
99 s1.a = 5;
100 s1.b = 6;
101
102 l1.a = 10;
103 l1.b = 11;
104 l1.c = 12;
105 l1.d = 13;
106 l1.e = 14;
107
108 s2.a = 7;
109 s2.b = 8;
110
111 n = 41;
112
113 args[0] = &n;
114 args[1] = &s1;
115 args[2] = &l1;
116 args[3] = &s2;
117 args[4] = NULL;
118
119 ffi_call(&cif, FFI_FN(test_fn), &res, args);
120 /* { dg-output "5 6 10 11 12 13 14 7 8" } */
121 printf("res: %d %d %d %d %d\n", res.a, res.b, res.c, res.d, res.e);
122 /* { dg-output "\nres: 15 17 19 21 14" } */
123
124 return 0;
125}
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
CHECK
#define CHECK(sub)
Definition: compile.c:429
ffitest.h
int
typedef int(ZCALLBACK *close_file_func) OF((voidpf opaque
ffi_prep_cif_var
ffi_status ffi_prep_cif_var(ffi_cif *cif, ffi_abi abi, unsigned int nfixedargs, unsigned int ntotalargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:232
NULL
#define NULL
Definition: regenc.h:69
stdarg.h
Defines old _.
large_tag
Definition: cls_struct_va1.c:18
large_tag::b
unsigned b
Definition: cls_struct_va1.c:20
large_tag::a
unsigned a
Definition: cls_struct_va1.c:19
large_tag::d
unsigned d
Definition: cls_struct_va1.c:22
large_tag::e
unsigned e
Definition: cls_struct_va1.c:23
large_tag::c
unsigned c
Definition: cls_struct_va1.c:21
small_tag
Definition: cls_struct_va1.c:12
small_tag::b
unsigned char b
Definition: cls_struct_va1.c:14
small_tag::a
unsigned char a
Definition: cls_struct_va1.c:13
main
int main(void)
Definition: va_struct3.c:51