kc3-lang/libffi/testsuite/libffi.call/struct2_win32.c

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• Hash : e1911f78
  Author :
  Date : 2014-03-16T03:25:53
  

  Add support for stdcall, thiscall, and fastcall on non-Windows x86-32 Linux supports the stdcall calling convention, either via functions explicitly declared with the stdcall attribute, or via code compiled with -mrtd which effectively makes stdcall the default. This introduces FFI_STDCALL, FFI_THISCALL, and FFI_FASTCALL on non-Windows x86-32 platforms, as non-default calling conventions.

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• testsuite/libffi.call/struct2_win32.c

• /* Area:	ffi_call
     Purpose:	Check structures in fastcall/stdcall function
     Limitations:	none.
     PR:		none.
     Originator:	From the original ffitest.c  */
  
  /* { dg-do run { target i?86-*-* } } */
  #include "ffitest.h"
  
  typedef struct
  {
    double d1;
    double d2;
  } test_structure_2;
  
  static test_structure_2 __FASTCALL__ struct2(test_structure_2 ts)
  {
    ts.d1--;
    ts.d2--;
  
    return ts;
  }
  
  int main (void)
  {
    ffi_cif cif;
    ffi_type *args[MAX_ARGS];
    void *values[MAX_ARGS];
    test_structure_2 ts2_arg;
    ffi_type ts2_type;
    ffi_type *ts2_type_elements[3];
  
    /* This is a hack to get a properly aligned result buffer */
    test_structure_2 *ts2_result =
      (test_structure_2 *) malloc (sizeof(test_structure_2));
  
    ts2_type.size = 0;
    ts2_type.alignment = 0;
    ts2_type.type = FFI_TYPE_STRUCT;
    ts2_type.elements = ts2_type_elements;
    ts2_type_elements[0] = &ffi_type_double;
    ts2_type_elements[1] = &ffi_type_double;
    ts2_type_elements[2] = NULL;
  
    args[0] = &ts2_type;
    values[0] = &ts2_arg;
    
    /* Initialize the cif */
    CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 1, &ts2_type, args) == FFI_OK);
    
    ts2_arg.d1 = 5.55;
    ts2_arg.d2 = 6.66;
    
    printf ("%g\n", ts2_arg.d1);
    printf ("%g\n", ts2_arg.d2);
    
    ffi_call(&cif, FFI_FN(struct2), ts2_result, values);
    
    printf ("%g\n", ts2_result->d1);
    printf ("%g\n", ts2_result->d2);
    
    CHECK(ts2_result->d1 == 5.55 - 1);
    CHECK(ts2_result->d2 == 6.66 - 1);
    
    free (ts2_result);
    exit(0);
  }
  

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