c3-lang/libffi/testsuite/libffi.closures/problem1.c

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• Hash : c88c0e92
  Author :
  Date : 2019-11-22T19:27:34
  

  More more closure tests to the closure test directory

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• testsuite/libffi.closures/problem1.c

• /* Area:	ffi_call, closure_call
     Purpose:	Check structure passing with different structure size.
     Limitations:	none.
     PR:		none.
     Originator:	<andreast@gcc.gnu.org> 20030828	 */
  
  /* { dg-do run } */
  #include "ffitest.h"
  
  typedef struct my_ffi_struct {
    double a;
    double b;
    double c;
  } my_ffi_struct;
  
  my_ffi_struct callee(struct my_ffi_struct a1, struct my_ffi_struct a2)
  {
    struct my_ffi_struct result;
    result.a = a1.a + a2.a;
    result.b = a1.b + a2.b;
    result.c = a1.c + a2.c;
  
  
    printf("%g %g %g %g %g %g: %g %g %g\n", a1.a, a1.b, a1.c,
  	 a2.a, a2.b, a2.c, result.a, result.b, result.c);
  
    return result;
  }
  
  void stub(ffi_cif* cif __UNUSED__, void* resp, void** args,
  	  void* userdata __UNUSED__)
  {
    struct my_ffi_struct a1;
    struct my_ffi_struct a2;
  
    a1 = *(struct my_ffi_struct*)(args[0]);
    a2 = *(struct my_ffi_struct*)(args[1]);
  
    *(my_ffi_struct *)resp = callee(a1, a2);
  }
  
  
  int main(void)
  {
    ffi_type* my_ffi_struct_fields[4];
    ffi_type my_ffi_struct_type;
    ffi_cif cif;
    void *code;
    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    void* args[4];
    ffi_type* arg_types[3];
  
    struct my_ffi_struct g = { 1.0, 2.0, 3.0 };
    struct my_ffi_struct f = { 1.0, 2.0, 3.0 };
    struct my_ffi_struct res;
  
    my_ffi_struct_type.size = 0;
    my_ffi_struct_type.alignment = 0;
    my_ffi_struct_type.type = FFI_TYPE_STRUCT;
    my_ffi_struct_type.elements = my_ffi_struct_fields;
  
    my_ffi_struct_fields[0] = &ffi_type_double;
    my_ffi_struct_fields[1] = &ffi_type_double;
    my_ffi_struct_fields[2] = &ffi_type_double;
    my_ffi_struct_fields[3] = NULL;
  
    arg_types[0] = &my_ffi_struct_type;
    arg_types[1] = &my_ffi_struct_type;
    arg_types[2] = NULL;
  
    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &my_ffi_struct_type,
  		     arg_types) == FFI_OK);
  
    args[0] = &g;
    args[1] = &f;
    args[2] = NULL;
    ffi_call(&cif, FFI_FN(callee), &res, args);
    /* { dg-output "1 2 3 1 2 3: 2 4 6" } */
    printf("res: %g %g %g\n", res.a, res.b, res.c);
    /* { dg-output "\nres: 2 4 6" } */
  
    CHECK(ffi_prep_closure_loc(pcl, &cif, stub, NULL, code) == FFI_OK);
  
    res = ((my_ffi_struct(*)(struct my_ffi_struct, struct my_ffi_struct))(code))(g, f);
    /* { dg-output "\n1 2 3 1 2 3: 2 4 6" } */
    printf("res: %g %g %g\n", res.a, res.b, res.c);
    /* { dg-output "\nres: 2 4 6" } */
  
    exit(0);;
  }
  

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