Ruby 2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)

va_struct2.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
13 struct small_tag
14 {
15 unsigned char a;
16 unsigned char b;
17 };
18
19 struct large_tag
20 {
21 unsigned a;
22 unsigned b;
23 unsigned c;
24 unsigned d;
25 unsigned e;
26 };
27
28 static struct small_tag
29 test_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 s1.a += s2.a;
44 s1.b += s2.b;
45 return s1;
46 }
47
48 int
49 main (void)
50 {
51 ffi_cif cif;
52 void* args[5];
53 ffi_type* arg_types[5];
54
55 ffi_type s_type;
56 ffi_type *s_type_elements[3];
57
58 ffi_type l_type;
59 ffi_type *l_type_elements[6];
60
61 struct small_tag s1;
62 struct small_tag s2;
63 struct large_tag l1;
64
65 int n;
66 struct small_tag res;
67
68 s_type.size = 0;
69 s_type.alignment = 0;
70 s_type.type = FFI_TYPE_STRUCT;
71 s_type.elements = s_type_elements;
72
73 s_type_elements[0] = &ffi_type_uchar;
74 s_type_elements[1] = &ffi_type_uchar;
75 s_type_elements[2] = NULL;
76
77 l_type.size = 0;
78 l_type.alignment = 0;
79 l_type.type = FFI_TYPE_STRUCT;
80 l_type.elements = l_type_elements;
81
82 l_type_elements[0] = &ffi_type_uint;
83 l_type_elements[1] = &ffi_type_uint;
84 l_type_elements[2] = &ffi_type_uint;
85 l_type_elements[3] = &ffi_type_uint;
86 l_type_elements[4] = &ffi_type_uint;
87 l_type_elements[5] = NULL;
88
89 arg_types[0] = &ffi_type_sint;
90 arg_types[1] = &s_type;
91 arg_types[2] = &l_type;
92 arg_types[3] = &s_type;
93 arg_types[4] = NULL;
94
95 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 4, &s_type, arg_types) == FFI_OK);
96
97 s1.a = 5;
98 s1.b = 6;
99
100 l1.a = 10;
101 l1.b = 11;
102 l1.c = 12;
103 l1.d = 13;
104 l1.e = 14;
105
106 s2.a = 7;
107 s2.b = 8;
108
109 n = 41;
110
111 args[0] = &n;
112 args[1] = &s1;
113 args[2] = &l1;
114 args[3] = &s2;
115 args[4] = NULL;
116
117 ffi_call(&cif, FFI_FN(test_fn), &res, args);
118 /* { dg-output "5 6 10 11 12 13 14 7 8" } */
119 printf("res: %d %d\n", res.a, res.b);
120 /* { dg-output "\nres: 12 14" } */
121
122 return 0;
123 }
small_tag
Definition: cls_struct_va1.c:11
large_tag
Definition: cls_struct_va1.c:17
small_tag::b
unsigned char b
Definition: cls_struct_va1.c:14
va_arg
#define va_arg(v, l)
Definition: rb_mjit_min_header-2.7.0.h:3980
large_tag::b
unsigned b
Definition: cls_struct_va1.c:20
int
__inline__ int
Definition: rb_mjit_min_header-2.7.0.h:2839
large_tag::c
unsigned c
Definition: cls_struct_va1.c:21
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
NULL
#define NULL
Definition: _sdbm.c:101
ffitest.h
main
int main(void)
Definition: va_struct2.c:49
large_tag::e
unsigned e
Definition: cls_struct_va1.c:23
va_end
#define va_end(v)
Definition: rb_mjit_min_header-2.7.0.h:3979
CHECK
#define CHECK(sub)
Definition: compile.c:448
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
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
n
const char size_t n
Definition: rb_mjit_min_header-2.7.0.h:5456
small_tag::a
unsigned char a
Definition: cls_struct_va1.c:13
ffi_type_uchar
#define ffi_type_uchar
Definition: fiddle.h:55
large_tag::d
unsigned d
Definition: cls_struct_va1.c:22
s2
const char * s2
Definition: rb_mjit_min_header-2.7.0.h:5454
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
va_start
#define va_start(v, l)
Definition: rb_mjit_min_header-2.7.0.h:3978
va_list
__gnuc_va_list va_list
Definition: rb_mjit_min_header-2.7.0.h:836
large_tag::a
unsigned a
Definition: cls_struct_va1.c:19