github.com/prattmic/llgo-embedded@v0.0.0-20150820070356-41cfecea0e1e/third_party/gofrontend/libffi/testsuite/libffi.call/stret_medium.c (about)

     1  /* Area:		ffi_call, closure_call
     2     Purpose:		Check structure returning with different structure size.
     3  				Depending on the ABI. Check bigger struct which overlaps
     4  				the gp and fp register count on Darwin/AIX/ppc64.
     5     Limitations:	none.
     6     PR:			none.
     7     Originator:	Blake Chaffin	6/21/2007	*/
     8  
     9  /* { dg-do run { xfail strongarm*-*-* xscale*-*-*  } } */
    10  #include "ffitest.h"
    11  
    12  typedef struct struct_72byte {
    13  	double a;
    14  	double b;
    15  	double c;
    16  	double d;
    17  	double e;
    18  	double f;
    19  	double g;
    20  	double h;
    21  	double i;
    22  } struct_72byte;
    23  
    24  struct_72byte cls_struct_72byte_fn(
    25  	struct_72byte b0,
    26  	struct_72byte b1,
    27  	struct_72byte b2,
    28  	struct_72byte b3)
    29  {
    30  	struct_72byte	result;
    31  
    32  	result.a = b0.a + b1.a + b2.a + b3.a;
    33  	result.b = b0.b + b1.b + b2.b + b3.b;
    34  	result.c = b0.c + b1.c + b2.c + b3.c;
    35  	result.d = b0.d + b1.d + b2.d + b3.d;
    36  	result.e = b0.e + b1.e + b2.e + b3.e;
    37  	result.f = b0.f + b1.f + b2.f + b3.f;
    38  	result.g = b0.g + b1.g + b2.g + b3.g;
    39  	result.h = b0.h + b1.h + b2.h + b3.h;
    40  	result.i = b0.i + b1.i + b2.i + b3.i;
    41  
    42  	printf("%g %g %g %g %g %g %g %g %g\n", result.a, result.b, result.c,
    43  		result.d, result.e, result.f, result.g, result.h, result.i);
    44  
    45  	return result;
    46  }
    47  
    48  static void
    49  cls_struct_72byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, void* userdata __UNUSED__)
    50  {
    51  	struct_72byte	b0, b1, b2, b3;
    52  
    53  	b0 = *(struct_72byte*)(args[0]);
    54  	b1 = *(struct_72byte*)(args[1]);
    55  	b2 = *(struct_72byte*)(args[2]);
    56  	b3 = *(struct_72byte*)(args[3]);
    57  
    58  	*(struct_72byte*)resp = cls_struct_72byte_fn(b0, b1, b2, b3);
    59  }
    60  
    61  int main (void)
    62  {
    63  	ffi_cif cif;
    64          void *code;
    65  	ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    66  	void* args_dbl[5];
    67  	ffi_type* cls_struct_fields[10];
    68  	ffi_type cls_struct_type;
    69  	ffi_type* dbl_arg_types[5];
    70  
    71  	struct_72byte e_dbl = { 9.0, 2.0, 6.0, 5.0, 3.0, 4.0, 8.0, 1.0, 7.0 };
    72  	struct_72byte f_dbl = { 1.0, 2.0, 3.0, 7.0, 2.0, 5.0, 6.0, 7.0, 4.0 };
    73  	struct_72byte g_dbl = { 4.0, 5.0, 7.0, 9.0, 1.0, 1.0, 2.0, 9.0, 3.0 };
    74  	struct_72byte h_dbl = { 8.0, 6.0, 1.0, 4.0, 0.0, 3.0, 3.0, 1.0, 2.0 };
    75  	struct_72byte res_dbl;
    76  
    77  	cls_struct_type.size = 0;
    78  	cls_struct_type.alignment = 0;
    79  	cls_struct_type.type = FFI_TYPE_STRUCT;
    80  	cls_struct_type.elements = cls_struct_fields;
    81  
    82  	cls_struct_fields[0] = &ffi_type_double;
    83  	cls_struct_fields[1] = &ffi_type_double;
    84  	cls_struct_fields[2] = &ffi_type_double;
    85  	cls_struct_fields[3] = &ffi_type_double;
    86  	cls_struct_fields[4] = &ffi_type_double;
    87  	cls_struct_fields[5] = &ffi_type_double;
    88  	cls_struct_fields[6] = &ffi_type_double;
    89  	cls_struct_fields[7] = &ffi_type_double;
    90  	cls_struct_fields[8] = &ffi_type_double;
    91  	cls_struct_fields[9] = NULL;
    92  
    93  	dbl_arg_types[0] = &cls_struct_type;
    94  	dbl_arg_types[1] = &cls_struct_type;
    95  	dbl_arg_types[2] = &cls_struct_type;
    96  	dbl_arg_types[3] = &cls_struct_type;
    97  	dbl_arg_types[4] = NULL;
    98  
    99  	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4, &cls_struct_type,
   100  		dbl_arg_types) == FFI_OK);
   101  
   102  	args_dbl[0] = &e_dbl;
   103  	args_dbl[1] = &f_dbl;
   104  	args_dbl[2] = &g_dbl;
   105  	args_dbl[3] = &h_dbl;
   106  	args_dbl[4] = NULL;
   107  
   108  	ffi_call(&cif, FFI_FN(cls_struct_72byte_fn), &res_dbl, args_dbl);
   109  	/* { dg-output "22 15 17 25 6 13 19 18 16" } */
   110  	printf("res: %g %g %g %g %g %g %g %g %g\n", res_dbl.a, res_dbl.b, res_dbl.c,
   111  		res_dbl.d, res_dbl.e, res_dbl.f, res_dbl.g, res_dbl.h, res_dbl.i);
   112  	/* { dg-output "\nres: 22 15 17 25 6 13 19 18 16" } */
   113  
   114  	CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_72byte_gn, NULL, code) == FFI_OK);
   115  
   116  	res_dbl = ((struct_72byte(*)(struct_72byte, struct_72byte,
   117  		struct_72byte, struct_72byte))(code))(e_dbl, f_dbl, g_dbl, h_dbl);
   118  	/* { dg-output "\n22 15 17 25 6 13 19 18 16" } */
   119  	printf("res: %g %g %g %g %g %g %g %g %g\n", res_dbl.a, res_dbl.b, res_dbl.c,
   120  		res_dbl.d, res_dbl.e, res_dbl.f, res_dbl.g, res_dbl.h, res_dbl.i);
   121  	/* { dg-output "\nres: 22 15 17 25 6 13 19 18 16" } */
   122  
   123  	exit(0);
   124  }