/js/src/ctypes/libffi/testsuite/libffi.call/cls_3byte2.c

 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. Check overlapping.
 5   Limitations:	none.
 6   PR:		none.
 7   Originator:	<andreast@gcc.gnu.org> 20030828	 */
 8
 9/* { dg-do run } */
10#include "ffitest.h"
11
12typedef struct cls_struct_3byte_1 {
13  unsigned char a;
14  unsigned short b;
15} cls_struct_3byte_1;
16
17cls_struct_3byte_1 cls_struct_3byte_fn1(struct cls_struct_3byte_1 a1,
18			    struct cls_struct_3byte_1 a2)
19{
20  struct cls_struct_3byte_1 result;
21
22  result.a = a1.a + a2.a;
23  result.b = a1.b + a2.b;
24
25  printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
26
27  return  result;
28}
29
30static void
31cls_struct_3byte_gn1(ffi_cif* cif __UNUSED__, void* resp, void** args,
32		     void* userdata __UNUSED__)
33{
34
35  struct cls_struct_3byte_1 a1, a2;
36
37  a1 = *(struct cls_struct_3byte_1*)(args[0]);
38  a2 = *(struct cls_struct_3byte_1*)(args[1]);
39
40  *(cls_struct_3byte_1*)resp = cls_struct_3byte_fn1(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[4];
50  ffi_type cls_struct_type;
51  ffi_type* dbl_arg_types[5];
52
53  cls_struct_type.size = 0;
54  cls_struct_type.alignment = 0;
55  cls_struct_type.type = FFI_TYPE_STRUCT;
56  cls_struct_type.elements = cls_struct_fields;
57
58  struct cls_struct_3byte_1 g_dbl = { 15, 125 };
59  struct cls_struct_3byte_1 f_dbl = { 9, 19 };
60  struct cls_struct_3byte_1 res_dbl;
61
62  cls_struct_fields[0] = &ffi_type_uchar;
63  cls_struct_fields[1] = &ffi_type_ushort;
64  cls_struct_fields[2] = NULL;
65
66  dbl_arg_types[0] = &cls_struct_type;
67  dbl_arg_types[1] = &cls_struct_type;
68  dbl_arg_types[2] = NULL;
69
70  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
71		     dbl_arg_types) == FFI_OK);
72
73  args_dbl[0] = &g_dbl;
74  args_dbl[1] = &f_dbl;
75  args_dbl[2] = NULL;
76
77  ffi_call(&cif, FFI_FN(cls_struct_3byte_fn1), &res_dbl, args_dbl);
78  /* { dg-output "15 125 9 19: 24 144" } */
79  printf("res: %d %d\n", res_dbl.a, res_dbl.b);
80  /* { dg-output "\nres: 24 144" } */
81
82  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_3byte_gn1, NULL, code) == FFI_OK);
83
84  res_dbl = ((cls_struct_3byte_1(*)(cls_struct_3byte_1, cls_struct_3byte_1))(code))(g_dbl, f_dbl);
85  /* { dg-output "\n15 125 9 19: 24 144" } */
86  printf("res: %d %d\n", res_dbl.a, res_dbl.b);
87  /* { dg-output "\nres: 24 144" } */
88
89  exit(0);
90}