libffi/testsuite/libffi.call/cls_dbls_struct.c

   1 /* Area:                ffi_call, closure_call
   2    Purpose:             Check double arguments in structs.
   3    Limitations: none.
   4    PR:                  none.
   5    Originator:  Blake Chaffin 6/23/2007 */
   6
   7 /* { dg-do run } */
   8
   9 #include "ffitest.h"
  10
  11 typedef struct Dbls {
  12         double x;
  13         double y;
  14 } Dbls;
  15
  16 void
  17 closure_test_fn(Dbls p)
  18 {
  19         printf("%.1f %.1f\n", p.x, p.y);
  20 }
  21
  22 void
  23 closure_test_gn(ffi_cif* cif __UNUSED__, void* resp __UNUSED__,
  24                 void** args, void* userdata __UNUSED__)
  25 {
  26         closure_test_fn(*(Dbls*)args[0]);
  27 }
  28
  29 int main(int argc __UNUSED__, char** argv __UNUSED__)
  30 {
  31         ffi_cif cif;
  32
  33         void *code;
  34         ffi_closure*    pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  35         ffi_type*               cl_arg_types[1];
  36
  37         ffi_type        ts1_type;
  38         ffi_type*       ts1_type_elements[4];
  39
  40         Dbls arg = { 1.0, 2.0 };
  41
  42         ts1_type.size = 0;
  43         ts1_type.alignment = 0;
  44         ts1_type.type = FFI_TYPE_STRUCT;
  45         ts1_type.elements = ts1_type_elements;
  46
  47         ts1_type_elements[0] = &ffi_type_double;
  48         ts1_type_elements[1] = &ffi_type_double;
  49         ts1_type_elements[2] = NULL;
  50
  51         cl_arg_types[0] = &ts1_type;
  52
  53         /* Initialize the cif */
  54         CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  55                                  &ffi_type_void, cl_arg_types) == FFI_OK);
  56
  57         CHECK(ffi_prep_closure_loc(pcl, &cif, closure_test_gn, NULL, code) == FFI_OK);
  58
  59         ((void*(*)(Dbls))(code))(arg);
  60         /* { dg-output "1.0 2.0\n" } */
  61
  62         closure_test_fn(arg);
  63         /* { dg-output "1.0 2.0\n" } */
  64
  65         return 0;
  66 }