libffi/testsuite/libffi.call/nested_struct12.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <jincheng@ca.ibm.com> and <jakub@redhat.com> 20210609    */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 typedef struct A {
  11   float a, b;
  12 } A;
  13
  14 typedef struct B {
  15   float x;
  16   struct A y;
  17 } B;
  18
  19 B B_fn(float b0, struct B b1)
  20 {
  21   struct B result;
  22
  23   result.x = b0 + b1.x;
  24   result.y.a = b0 + b1.y.a;
  25   result.y.b = b0 + b1.y.b;
  26
  27   printf("%g %g %g %g: %g %g %g\n", b0, b1.x, b1.y.a, b1.y.b,
  28          result.x, result.y.a, result.y.b);
  29
  30   return result;
  31 }
  32
  33 static void
  34 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  35      void* userdata __UNUSED__)
  36 {
  37   float b0;
  38   struct B b1;
  39
  40   b0 = *(float*)(args[0]);
  41   b1 = *(struct B*)(args[1]);
  42
  43   *(B*)resp = B_fn(b0, b1);
  44 }
  45
  46 int main (void)
  47 {
  48   ffi_cif cif;
  49   void *code;
  50   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  51   void* args_dbl[3];
  52   ffi_type* cls_struct_fields[3];
  53   ffi_type* cls_struct_fields1[3];
  54   ffi_type cls_struct_type, cls_struct_type1;
  55   ffi_type* dbl_arg_types[3];
  56
  57   float e_dbl = 12.125f;
  58   struct B f_dbl = { 24.75f, { 31.625f, 32.25f } };
  59
  60   struct B res_dbl;
  61
  62   cls_struct_type.size = 0;
  63   cls_struct_type.alignment = 0;
  64   cls_struct_type.type = FFI_TYPE_STRUCT;
  65   cls_struct_type.elements = cls_struct_fields;
  66
  67   cls_struct_type1.size = 0;
  68   cls_struct_type1.alignment = 0;
  69   cls_struct_type1.type = FFI_TYPE_STRUCT;
  70   cls_struct_type1.elements = cls_struct_fields1;
  71
  72   cls_struct_fields[0] = &ffi_type_float;
  73   cls_struct_fields[1] = &ffi_type_float;
  74   cls_struct_fields[2] = NULL;
  75
  76   cls_struct_fields1[0] = &ffi_type_float;
  77   cls_struct_fields1[1] = &cls_struct_type;
  78   cls_struct_fields1[2] = NULL;
  79
  80
  81   dbl_arg_types[0] = &ffi_type_float;
  82   dbl_arg_types[1] = &cls_struct_type1;
  83   dbl_arg_types[2] = NULL;
  84
  85   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
  86                      dbl_arg_types) == FFI_OK);
  87
  88   args_dbl[0] = &e_dbl;
  89   args_dbl[1] = &f_dbl;
  90   args_dbl[2] = NULL;
  91
  92   ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
  93   /* { dg-output "12.125 24.75 31.625 32.25: 36.875 43.75 44.375" } */
  94   CHECK( res_dbl.x == (e_dbl + f_dbl.x));
  95   CHECK( res_dbl.y.a == (e_dbl + f_dbl.y.a));
  96   CHECK( res_dbl.y.b == (e_dbl + f_dbl.y.b));
  97
  98   CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
  99
 100   res_dbl = ((B(*)(float, B))(code))(e_dbl, f_dbl);
 101   /* { dg-output "\n12.125 24.75 31.625 32.25: 36.875 43.75 44.375" } */
 102   CHECK( res_dbl.x == (e_dbl + f_dbl.x));
 103   CHECK( res_dbl.y.a == (e_dbl + f_dbl.y.a));
 104   CHECK( res_dbl.y.b == (e_dbl + f_dbl.y.b));
 105
 106   exit(0);
 107 }