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/* { dg-do run } */
10#include "ffitest.h"
11
12typedef struct cls_struct_3_1byte {
13  unsigned char a;
14  unsigned char b;
15  unsigned char c;
16} cls_struct_3_1byte;
17
18cls_struct_3_1byte cls_struct_3_1byte_fn(struct cls_struct_3_1byte a1,
19			    struct cls_struct_3_1byte a2)
20{
21  struct cls_struct_3_1byte result;
22
23  result.a = a1.a + a2.a;
24  result.b = a1.b + a2.b;
25  result.c = a1.c + a2.c;
26
27  printf("%d %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c,
28	 a2.a, a2.b, a2.c,
29	 result.a, result.b, result.c);
30
31  return  result;
32}
33
34static void
35cls_struct_3_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
36		      void* userdata __UNUSED__)
37{
38
39  struct cls_struct_3_1byte a1, a2;
40
41  a1 = *(struct cls_struct_3_1byte*)(args[0]);
42  a2 = *(struct cls_struct_3_1byte*)(args[1]);
43
44  *(cls_struct_3_1byte*)resp = cls_struct_3_1byte_fn(a1, a2);
45}
46
47int main (void)
48{
49  ffi_cif cif;
50  void *code;
51  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
52  void* args_dbl[5];
53  ffi_type* cls_struct_fields[4];
54  ffi_type cls_struct_type;
55  ffi_type* dbl_arg_types[5];
56
57  struct cls_struct_3_1byte g_dbl = { 12, 13, 14 };
58  struct cls_struct_3_1byte f_dbl = { 178, 179, 180 };
59  struct cls_struct_3_1byte res_dbl;
60
61  cls_struct_type.size = 0;
62  cls_struct_type.alignment = 0;
63  cls_struct_type.type = FFI_TYPE_STRUCT;
64  cls_struct_type.elements = cls_struct_fields;
65
66  cls_struct_fields[0] = &ffi_type_uchar;
67  cls_struct_fields[1] = &ffi_type_uchar;
68  cls_struct_fields[2] = &ffi_type_uchar;
69  cls_struct_fields[3] = NULL;
70
71  dbl_arg_types[0] = &cls_struct_type;
72  dbl_arg_types[1] = &cls_struct_type;
73  dbl_arg_types[2] = NULL;
74
75  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
76		     dbl_arg_types) == FFI_OK);
77
78  args_dbl[0] = &g_dbl;
79  args_dbl[1] = &f_dbl;
80  args_dbl[2] = NULL;
81
82  ffi_call(&cif, FFI_FN(cls_struct_3_1byte_fn), &res_dbl, args_dbl);
83  /* { dg-output "12 13 14 178 179 180: 190 192 194" } */
84  printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
85  /* { dg-output "\nres: 190 192 194" } */
86
87  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_3_1byte_gn, NULL, code) == FFI_OK);
88
89  res_dbl = ((cls_struct_3_1byte(*)(cls_struct_3_1byte, cls_struct_3_1byte))(code))(g_dbl, f_dbl);
90  /* { dg-output "\n12 13 14 178 179 180: 190 192 194" } */
91  printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
92  /* { dg-output "\nres: 190 192 194" } */
93
94  exit(0);
95}
96