Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/struct6.c Source File

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

struct6.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 typedef struct
10{
11 float f;
12 double d;
13} test_structure_6;
14
15static test_structure_6 ABI_ATTR struct6 (test_structure_6 ts)
16{
17 ts.f += 1;
18 ts.d += 1;
19
20 return ts;
21}
22
23 int main (void)
24{
25 ffi_cif cif;
26 ffi_type *args[MAX_ARGS];
27 void *values[MAX_ARGS];
28 ffi_type ts6_type;
29 ffi_type *ts6_type_elements[3];
30
31 test_structure_6 ts6_arg;
32
33 /* This is a hack to get a properly aligned result buffer */
34 test_structure_6 *ts6_result =
35 (test_structure_6 *) malloc (sizeof(test_structure_6));
36
37 ts6_type.size = 0;
38 ts6_type.alignment = 0;
39 ts6_type.type = FFI_TYPE_STRUCT;
40 ts6_type.elements = ts6_type_elements;
41 ts6_type_elements[0] = &ffi_type_float;
42 ts6_type_elements[1] = &ffi_type_double;
43 ts6_type_elements[2] = NULL;
44
45 args[0] = &ts6_type;
46 values[0] = &ts6_arg;
47
48 /* Initialize the cif */
49 CHECK(ffi_prep_cif(&cif, ABI_NUM, 1, &ts6_type, args) == FFI_OK);
50
51 ts6_arg.f = 5.55f;
52 ts6_arg.d = 6.66;
53
54 printf ("%g\n", ts6_arg.f);
55 printf ("%g\n", ts6_arg.d);
56
57 ffi_call(&cif, FFI_FN(struct6), ts6_result, values);
58
59 CHECK(ts6_result->f == 5.55f + 1);
60 CHECK(ts6_result->d == 6.66 + 1);
61
62 free (ts6_result);
63 exit(0);
64}
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: struct6.c:23
test_structure_6
Definition: struct6.c:10
test_structure_6::d
double d
Definition: struct6.c:12
test_structure_6::f
float f
Definition: struct6.c:11