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/js/src/ctypes/libffi/testsuite/libffi.call/nested_struct10.c

http://github.com/zpao/v8monkey
C | 133 lines | 95 code | 28 blank | 10 comment | 8 complexity | 2556662b45b032ecc03ded31eab8d3a4 MD5 | raw file
  1/* Area:	ffi_call, closure_call
  2   Purpose:	Check structure passing with different structure size.
  3		Contains structs as parameter of the struct itself.
  4		Sample taken from Alan Modras patch to src/prep_cif.c.
  5   Limitations:	none.
  6   PR:		none.
  7   Originator:	<andreast@gcc.gnu.org> 20051010	 */
  8
  9/* { dg-do run } */
 10#include "ffitest.h"
 11
 12typedef struct A {
 13  unsigned long long a;
 14  unsigned char b;
 15} A;
 16
 17typedef struct B {
 18  unsigned char y;
 19  struct A x;
 20  unsigned int z;
 21} B;
 22
 23typedef struct C {
 24  unsigned long long d;
 25  unsigned char e;
 26} C;
 27
 28static B B_fn(struct A b2, struct B b3, struct C b4)
 29{
 30  struct B result;
 31
 32  result.x.a = b2.a + b3.x.a + b3.z + b4.d;
 33  result.x.b = b2.b + b3.x.b + b3.y + b4.e;
 34  result.y = b2.b + b3.x.b + b4.e;
 35
 36  printf("%d %d %d %d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b,
 37	 (int)b3.x.a, b3.x.b, b3.y, b3.z, (int)b4.d, b4.e,
 38	 (int)result.x.a, result.x.b, result.y);
 39
 40  return result;
 41}
 42
 43static void
 44B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
 45     void* userdata __UNUSED__)
 46{
 47  struct A b0;
 48  struct B b1;
 49  struct C b2;
 50
 51  b0 = *(struct A*)(args[0]);
 52  b1 = *(struct B*)(args[1]);
 53  b2 = *(struct C*)(args[2]);
 54
 55  *(B*)resp = B_fn(b0, b1, b2);
 56}
 57
 58int main (void)
 59{
 60  ffi_cif cif;
 61  void *code;
 62  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
 63  void* args_dbl[4];
 64  ffi_type* cls_struct_fields[3];
 65  ffi_type* cls_struct_fields1[4];
 66  ffi_type* cls_struct_fields2[3];
 67  ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;
 68  ffi_type* dbl_arg_types[4];
 69
 70  cls_struct_type.size = 0;
 71  cls_struct_type.alignment = 0;
 72  cls_struct_type.type = FFI_TYPE_STRUCT;
 73  cls_struct_type.elements = cls_struct_fields;
 74
 75  cls_struct_type1.size = 0;
 76  cls_struct_type1.alignment = 0;
 77  cls_struct_type1.type = FFI_TYPE_STRUCT;
 78  cls_struct_type1.elements = cls_struct_fields1;
 79
 80  cls_struct_type2.size = 0;
 81  cls_struct_type2.alignment = 0;
 82  cls_struct_type2.type = FFI_TYPE_STRUCT;
 83  cls_struct_type2.elements = cls_struct_fields2;
 84
 85  struct A e_dbl = { 1LL, 7};
 86  struct B f_dbl = { 99, {12LL , 127}, 255};
 87  struct C g_dbl = { 2LL, 9};
 88
 89  struct B res_dbl;
 90
 91  cls_struct_fields[0] = &ffi_type_uint64;
 92  cls_struct_fields[1] = &ffi_type_uchar;
 93  cls_struct_fields[2] = NULL;
 94
 95  cls_struct_fields1[0] = &ffi_type_uchar;
 96  cls_struct_fields1[1] = &cls_struct_type;
 97  cls_struct_fields1[2] = &ffi_type_uint;
 98  cls_struct_fields1[3] = NULL;
 99
100  cls_struct_fields2[0] = &ffi_type_uint64;
101  cls_struct_fields2[1] = &ffi_type_uchar;
102  cls_struct_fields2[2] = NULL;
103
104
105  dbl_arg_types[0] = &cls_struct_type;
106  dbl_arg_types[1] = &cls_struct_type1;
107  dbl_arg_types[2] = &cls_struct_type2;
108  dbl_arg_types[3] = NULL;
109
110  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,
111		     dbl_arg_types) == FFI_OK);
112
113  args_dbl[0] = &e_dbl;
114  args_dbl[1] = &f_dbl;
115  args_dbl[2] = &g_dbl;
116  args_dbl[3] = NULL;
117
118  ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
119  /* { dg-output "1 7 12 127 99 255 2 9: 270 242 143" } */
120  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d));
121  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
122  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
123
124  CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
125
126  res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl);
127  /* { dg-output "\n1 7 12 127 99 255 2 9: 270 242 143" } */
128  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d));
129  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));
130  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));
131
132  exit(0);
133}