1/* Area:	ffi_call, closure_call
2   Purpose:	Check structure passing with different structure size.
3		Especially with small structures which may fit in one
4		register. Depending on the ABI.
5   Limitations:	none.
6   PR:		none.
7   Originator:	<andreast@gcc.gnu.org> 20030902	 */
8
9
10
11/* { dg-do run } */
12#include "ffitest.h"
13
14typedef struct cls_struct_1_1byte {
15  unsigned char a;
16} cls_struct_1_1byte;
17
18cls_struct_1_1byte cls_struct_1_1byte_fn(struct cls_struct_1_1byte a1,
19			    struct cls_struct_1_1byte a2)
20{
21  struct cls_struct_1_1byte result;
22
23  result.a = a1.a + a2.a;
24
25  printf("%d %d: %d\n", a1.a, a2.a, result.a);
26
27  return  result;
28}
29
30static void
31cls_struct_1_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
32		      void* userdata __UNUSED__)
33{
34
35  struct cls_struct_1_1byte a1, a2;
36
37  a1 = *(struct cls_struct_1_1byte*)(args[0]);
38  a2 = *(struct cls_struct_1_1byte*)(args[1]);
39
40  *(cls_struct_1_1byte*)resp = cls_struct_1_1byte_fn(a1, a2);
41}
42
43int main (void)
44{
45  ffi_cif cif;
46  void *code;
47  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
48  void* args_dbl[5];
49  ffi_type* cls_struct_fields[2];
50  ffi_type cls_struct_type;
51  ffi_type* dbl_arg_types[5];
52
53  struct cls_struct_1_1byte g_dbl = { 12 };
54  struct cls_struct_1_1byte f_dbl = { 178 };
55  struct cls_struct_1_1byte res_dbl;
56
57  cls_struct_type.size = 0;
58  cls_struct_type.alignment = 0;
59  cls_struct_type.type = FFI_TYPE_STRUCT;
60  cls_struct_type.elements = cls_struct_fields;
61
62  cls_struct_fields[0] = &ffi_type_uchar;
63  cls_struct_fields[1] = NULL;
64
65  dbl_arg_types[0] = &cls_struct_type;
66  dbl_arg_types[1] = &cls_struct_type;
67  dbl_arg_types[2] = NULL;
68
69  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
70		     dbl_arg_types) == FFI_OK);
71
72  args_dbl[0] = &g_dbl;
73  args_dbl[1] = &f_dbl;
74  args_dbl[2] = NULL;
75
76  ffi_call(&cif, FFI_FN(cls_struct_1_1byte_fn), &res_dbl, args_dbl);
77  /* { dg-output "12 178: 190" } */
78  printf("res: %d\n", res_dbl.a);
79  /* { dg-output "\nres: 190" } */
80
81  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_1_1byte_gn, NULL, code) == FFI_OK);
82
83  res_dbl = ((cls_struct_1_1byte(*)(cls_struct_1_1byte, cls_struct_1_1byte))(code))(g_dbl, f_dbl);
84  /* { dg-output "\n12 178: 190" } */
85  printf("res: %d\n", res_dbl.a);
86  /* { dg-output "\nres: 190" } */
87
88  exit(0);
89}
90