1  /* Area:       ffi_call, closure_call
       2     Purpose:    Single argument structs have a different ABI in emscripten.
       3     Limitations:        none.
       4     PR:         none.
       5     Originator: <hood@mit.edu>  */
       6  
       7  /* { dg-do run } */
       8  #include "ffitest.h"
       9  
      10  typedef struct A {
      11    int a;
      12  } A;
      13  
      14  static struct A A_fn(int b0, struct A b1)
      15  {
      16    b1.a += b0;
      17    return b1;
      18  }
      19  
      20  static void
      21  A_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
      22       void* userdata __UNUSED__)
      23  {
      24    int b0;
      25    struct A b1;
      26  
      27    b0 = *(int*)(args[0]);
      28    b1 = *(struct A*)(args[1]);
      29  
      30    *(A*)resp = A_fn(b0, b1);
      31  }
      32  
      33  int main (void)
      34  {
      35    printf("123\n");
      36    ffi_cif cif;
      37    void *code;
      38    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
      39    void* args_dbl[3];
      40    ffi_type* cls_struct_fields[2];
      41    ffi_type cls_struct_type;
      42    ffi_type* dbl_arg_types[3];
      43  
      44    int e_dbl = 12125;
      45    struct A f_dbl = { 31625 };
      46  
      47    struct A res_dbl;
      48  
      49    cls_struct_type.size = 0;
      50    cls_struct_type.alignment = 0;
      51    cls_struct_type.type = FFI_TYPE_STRUCT;
      52    cls_struct_type.elements = cls_struct_fields;
      53  
      54    cls_struct_fields[0] = &ffi_type_sint;
      55    cls_struct_fields[1] = NULL;
      56  
      57    dbl_arg_types[0] = &ffi_type_sint;
      58    dbl_arg_types[1] = &cls_struct_type;
      59    dbl_arg_types[2] = NULL;
      60  
      61    res_dbl = A_fn(e_dbl, f_dbl);
      62    printf("0 res: %d\n", res_dbl.a);
      63    /* { dg-output "0 res: 43750" } */
      64  
      65    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
      66                      dbl_arg_types) == FFI_OK);
      67  
      68    args_dbl[0] = &e_dbl;
      69    args_dbl[1] = &f_dbl;
      70    args_dbl[2] = NULL;
      71  
      72  
      73    ffi_call(&cif, FFI_FN(A_fn), &res_dbl, args_dbl);
      74    printf("1 res: %d\n", res_dbl.a);
      75    /* { dg-output "\n1 res: 43750" } */
      76    CHECK( res_dbl.a == (e_dbl + f_dbl.a));
      77  
      78    CHECK(ffi_prep_closure_loc(pcl, &cif, A_gn, NULL, code) == FFI_OK);
      79  
      80    res_dbl = ((A(*)(int, A))(code))(e_dbl, f_dbl);
      81    printf("2 res: %d\n", res_dbl.a);
      82    /* { dg-output "\n2 res: 43750" } */
      83    CHECK( res_dbl.a == (e_dbl + f_dbl.a));
      84  
      85    exit(0);
      86  }