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/* Area:        ffi_call, closure_call

   Purpose:     Check structure passing with different structure size.

                Especially with small structures which may fit in one

                register. Depending on the ABI.

   Limitations: none.

   PR:          none.

   Originator:  <andreast@gcc.gnu.org> 20030828  */

/* { dg-do run } */

#include "ffitest.h"

typedef struct cls_struct_2byte {

  unsigned char a;

  unsigned char b;

} cls_struct_2byte;

cls_struct_2byte cls_struct_2byte_fn(struct cls_struct_2byte a1,

                            struct cls_struct_2byte a2)

{

  struct cls_struct_2byte result;

  result.a = a1.a + a2.a;

  result.b = a1.b + a2.b;

  printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);

  return  result;

}

static void

cls_struct_2byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,

                    void* userdata __UNUSED__)

{

  struct cls_struct_2byte a1, a2;

  a1 = *(struct cls_struct_2byte*)(args[0]);

  a2 = *(struct cls_struct_2byte*)(args[1]);

  *(cls_struct_2byte*)resp = cls_struct_2byte_fn(a1, a2);

}

int main (void)

{

  ffi_cif cif;

  void *code;

  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);

  void* args_dbl[5];

  ffi_type* cls_struct_fields[4];

  ffi_type cls_struct_type;

  ffi_type* dbl_arg_types[5];

  cls_struct_type.size = 0;

  cls_struct_type.alignment = 0;

  cls_struct_type.type = FFI_TYPE_STRUCT;

  cls_struct_type.elements = cls_struct_fields;

  struct cls_struct_2byte g_dbl = { 12, 127 };

  struct cls_struct_2byte f_dbl = { 1, 13 };

  struct cls_struct_2byte res_dbl;

  cls_struct_fields[0] = &ffi_type_uchar;

  cls_struct_fields[1] = &ffi_type_uchar;

  cls_struct_fields[2] = NULL;

  dbl_arg_types[0] = &cls_struct_type;

  dbl_arg_types[1] = &cls_struct_type;

  dbl_arg_types[2] = NULL;

  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,

                     dbl_arg_types) == FFI_OK);

  args_dbl[0] = &g_dbl;

  args_dbl[1] = &f_dbl;

  args_dbl[2] = NULL;

  ffi_call(&cif, FFI_FN(cls_struct_2byte_fn), &res_dbl, args_dbl);

  /* { dg-output "12 127 1 13: 13 140" } */

  printf("res: %d %d\n", res_dbl.a, res_dbl.b);

  /* { dg-output "\nres: 13 140" } */

  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_2byte_gn, NULL, code) == FFI_OK);

  res_dbl = ((cls_struct_2byte(*)(cls_struct_2byte, cls_struct_2byte))(code))(g_dbl, f_dbl);

  /* { dg-output "\n12 127 1 13: 13 140" } */

  printf("res: %d %d\n", res_dbl.a, res_dbl.b);

  /* { dg-output "\nres: 13 140" } */

  exit(0);

}