kc3-lang/libffi/testsuite/libffi.call/struct_by_value_3f.c

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• Hash : 2d63cee0
  Author :
  Date : 2023-04-03T08:18:23
  

  Add tests with homogeneous aggregate types
  

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• testsuite/libffi.call/struct_by_value_3f.c

• /* Area:	ffi_call
     Purpose:	Check structures.
     Limitations:	none.
     PR:		none.
     Originator:	From the original ffitest.c  */
  
  /* { dg-do run } */
  #include "ffitest.h"
  
  typedef struct
  {
    float f01;
    float f02;
    float f03;
  } test_structure_1;
  
  static test_structure_1 ABI_ATTR struct1(test_structure_1 ts)
  {
    ts.f03++;
  
    return ts;
  }
  
  int main (void)
  {
    ffi_cif cif;
    ffi_type *args[MAX_ARGS];
    void *values[MAX_ARGS];
    ffi_type ts1_type;
    ffi_type *ts1_type_elements[5];
  
    test_structure_1 ts1_arg;
  
    /* This is a hack to get a properly aligned result buffer */
    test_structure_1 *ts1_result =
      (test_structure_1 *) malloc (sizeof(test_structure_1));
  
    ts1_type.size = 0;
    ts1_type.alignment = 0;
    ts1_type.type = FFI_TYPE_STRUCT;
    ts1_type.elements = ts1_type_elements;
    ts1_type_elements[0] = &ffi_type_float;
    ts1_type_elements[1] = &ffi_type_float;
    ts1_type_elements[2] = &ffi_type_float;
    ts1_type_elements[3] = NULL;
  
    args[0] = &ts1_type;
    values[0] = &ts1_arg;
  
    /* Initialize the cif */
    CHECK(ffi_prep_cif(&cif, ABI_NUM, 1,
  		     &ts1_type, args) == FFI_OK);
  
    ts1_arg.f03 = 555.5;
  
    ffi_call(&cif, FFI_FN(struct1), ts1_result, values);
  
    CHECK(fabs(ts1_result->f03 - 556.5) < FLT_EPSILON);
  
    /* This will fail if ffi_call isn't passing the struct by value. */
    CHECK(fabs(ts1_arg.f03 - 555.5) < FLT_EPSILON);
  
    free (ts1_result);
    exit(0);
  }
  

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