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path: root/contrib/restricted/libffi/testsuite/libffi.closures/cls_align_float.c
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/* Area:	ffi_call, closure_call 
   Purpose:	Check structure alignment of float. 
   Limitations:	none. 
   PR:		none. 
   Originator:	<hos@tamanegi.org> 20031203	 */ 
 
/* { dg-do run } */ 
#include "ffitest.h" 
 
typedef struct cls_struct_align { 
  unsigned char a; 
  float b; 
  unsigned char c; 
} cls_struct_align; 
 
cls_struct_align cls_struct_align_fn(struct cls_struct_align a1, 
			    struct cls_struct_align a2) 
{ 
  struct cls_struct_align result; 
 
  result.a = a1.a + a2.a; 
  result.b = a1.b + a2.b; 
  result.c = a1.c + a2.c; 
 
  printf("%d %g %d %d %g %d: %d %g %d\n", a1.a, (double)a1.b, a1.c, a2.a, (double)a2.b, a2.c, result.a, (double)result.b, result.c); 
 
  return  result; 
} 
 
static void 
cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, 
		    void* userdata __UNUSED__) 
{ 
 
  struct cls_struct_align a1, a2; 
 
  a1 = *(struct cls_struct_align*)(args[0]); 
  a2 = *(struct cls_struct_align*)(args[1]); 
 
  *(cls_struct_align*)resp = cls_struct_align_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]; 
 
  struct cls_struct_align g_dbl = { 12, 4951, 127 }; 
  struct cls_struct_align f_dbl = { 1, 9320, 13 }; 
  struct cls_struct_align res_dbl; 
 
  cls_struct_type.size = 0; 
  cls_struct_type.alignment = 0; 
  cls_struct_type.type = FFI_TYPE_STRUCT; 
  cls_struct_type.elements = cls_struct_fields; 
 
  cls_struct_fields[0] = &ffi_type_uchar; 
  cls_struct_fields[1] = &ffi_type_float; 
  cls_struct_fields[2] = &ffi_type_uchar; 
  cls_struct_fields[3] = 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_align_fn), &res_dbl, args_dbl); 
  /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */ 
  printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c); 
  /* { dg-output "\nres: 13 14271 140" } */ 
 
  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK); 
 
  res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl); 
  /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */ 
  printf("res: %d %g %d\n", res_dbl.a, (double)res_dbl.b, res_dbl.c); 
  /* { dg-output "\nres: 13 14271 140" } */ 
 
  exit(0); 
}