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/js/src/ctypes/libffi/testsuite/libffi.call/problem1.c

http://github.com/zpao/v8monkey
C | 90 lines | 60 code | 20 blank | 10 comment | 2 complexity | 00c9e6412441f7bba3c5d8f863d11d2f MD5 | raw file
 1/* Area:	ffi_call, closure_call
 2   Purpose:	Check structure passing with different structure size.
 3   Limitations:	none.
 4   PR:		none.
 5   Originator:	<andreast@gcc.gnu.org> 20030828	 */
 6
 7/* { dg-do run } */
 8#include "ffitest.h"
 9
10typedef struct my_ffi_struct {
11  double a;
12  double b;
13  double c;
14} my_ffi_struct;
15
16my_ffi_struct callee(struct my_ffi_struct a1, struct my_ffi_struct a2)
17{
18  struct my_ffi_struct result;
19  result.a = a1.a + a2.a;
20  result.b = a1.b + a2.b;
21  result.c = a1.c + a2.c;
22
23
24  printf("%g %g %g %g %g %g: %g %g %g\n", a1.a, a1.b, a1.c,
25	 a2.a, a2.b, a2.c, result.a, result.b, result.c);
26
27  return result;
28}
29
30void stub(ffi_cif* cif __UNUSED__, void* resp, void** args,
31	  void* userdata __UNUSED__)
32{
33  struct my_ffi_struct a1;
34  struct my_ffi_struct a2;
35
36  a1 = *(struct my_ffi_struct*)(args[0]);
37  a2 = *(struct my_ffi_struct*)(args[1]);
38
39  *(my_ffi_struct *)resp = callee(a1, a2);
40}
41
42
43int main(void)
44{
45  ffi_type* my_ffi_struct_fields[4];
46  ffi_type my_ffi_struct_type;
47  ffi_cif cif;
48  void *code;
49  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
50  void* args[4];
51  ffi_type* arg_types[3];
52
53  struct my_ffi_struct g = { 1.0, 2.0, 3.0 };
54  struct my_ffi_struct f = { 1.0, 2.0, 3.0 };
55  struct my_ffi_struct res;
56
57  my_ffi_struct_type.size = 0;
58  my_ffi_struct_type.alignment = 0;
59  my_ffi_struct_type.type = FFI_TYPE_STRUCT;
60  my_ffi_struct_type.elements = my_ffi_struct_fields;
61
62  my_ffi_struct_fields[0] = &ffi_type_double;
63  my_ffi_struct_fields[1] = &ffi_type_double;
64  my_ffi_struct_fields[2] = &ffi_type_double;
65  my_ffi_struct_fields[3] = NULL;
66
67  arg_types[0] = &my_ffi_struct_type;
68  arg_types[1] = &my_ffi_struct_type;
69  arg_types[2] = NULL;
70
71  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &my_ffi_struct_type,
72		     arg_types) == FFI_OK);
73
74  args[0] = &g;
75  args[1] = &f;
76  args[2] = NULL;
77  ffi_call(&cif, FFI_FN(callee), &res, args);
78  /* { dg-output "1 2 3 1 2 3: 2 4 6" } */
79  printf("res: %g %g %g\n", res.a, res.b, res.c);
80  /* { dg-output "\nres: 2 4 6" } */
81
82  CHECK(ffi_prep_closure_loc(pcl, &cif, stub, NULL, code) == FFI_OK);
83
84  res = ((my_ffi_struct(*)(struct my_ffi_struct, struct my_ffi_struct))(code))(g, f);
85  /* { dg-output "\n1 2 3 1 2 3: 2 4 6" } */
86  printf("res: %g %g %g\n", res.a, res.b, res.c);
87  /* { dg-output "\nres: 2 4 6" } */
88
89  exit(0);;
90}