Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/struct2.c Source File

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

struct2.c
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1/* Area: ffi_call
2 Purpose: Check structures.
3 Limitations: none.
4 PR: none.
5 Originator: From the original ffitest.c */
6
7/* { dg-do run } */
8#include "ffitest.h"
9
10 typedef struct
11{
12 double d1;
13 double d2;
14} test_structure_2;
15
16static test_structure_2 ABI_ATTR struct2(test_structure_2 ts)
17{
18 ts.d1--;
19 ts.d2--;
20
21 return ts;
22}
23
24 int main (void)
25{
26 ffi_cif cif;
27 ffi_type *args[MAX_ARGS];
28 void *values[MAX_ARGS];
29 test_structure_2 ts2_arg;
30 ffi_type ts2_type;
31 ffi_type *ts2_type_elements[3];
32
33 /* This is a hack to get a properly aligned result buffer */
34 test_structure_2 *ts2_result =
35 (test_structure_2 *) malloc (sizeof(test_structure_2));
36
37 ts2_type.size = 0;
38 ts2_type.alignment = 0;
39 ts2_type.type = FFI_TYPE_STRUCT;
40 ts2_type.elements = ts2_type_elements;
41 ts2_type_elements[0] = &ffi_type_double;
42 ts2_type_elements[1] = &ffi_type_double;
43 ts2_type_elements[2] = NULL;
44
45 args[0] = &ts2_type;
46 values[0] = &ts2_arg;
47
48 /* Initialize the cif */
49 CHECK(ffi_prep_cif(&cif, ABI_NUM, 1, &ts2_type, args) == FFI_OK);
50
51 ts2_arg.d1 = 5.55;
52 ts2_arg.d2 = 6.66;
53
54 printf ("%g\n", ts2_arg.d1);
55 printf ("%g\n", ts2_arg.d2);
56
57 ffi_call(&cif, FFI_FN(struct2), ts2_result, values);
58
59 printf ("%g\n", ts2_result->d1);
60 printf ("%g\n", ts2_result->d2);
61
62 CHECK(ts2_result->d1 == 5.55 - 1);
63 CHECK(ts2_result->d2 == 6.66 - 1);
64
65 free (ts2_result);
66 exit(0);
67}
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
CHECK
#define CHECK(sub)
Definition: compile.c:429
free
#define free(x)
Definition: dln.c:52
ffitest.h
ABI_NUM
#define ABI_NUM
Definition: ffitest.h:35
ABI_ATTR
#define ABI_ATTR
Definition: ffitest.h:36
MAX_ARGS
#define MAX_ARGS
Definition: function.c:17
ffi_prep_cif
ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:226
NULL
#define NULL
Definition: regenc.h:69
malloc
#define malloc
Definition: st.c:170
main
int main(void)
Definition: struct2.c:24
test_structure_2
Definition: struct2.c:11
test_structure_2::d1
double d1
Definition: struct2.c:12
test_structure_2::d2
double d2
Definition: struct2.c:13