github.com/prattmic/llgo-embedded@v0.0.0-20150820070356-41cfecea0e1e/third_party/gofrontend/libffi/testsuite/libffi.call/cls_64byte.c (about)

     1  /* Area:	ffi_call, closure_call
     2     Purpose:	Check structure passing 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:	<andreast@gcc.gnu.org> 20030828	 */
     8  
     9  /* { dg-do run } */
    10  #include "ffitest.h"
    11  
    12  typedef struct cls_struct_64byte {
    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  } cls_struct_64byte;
    22  
    23  cls_struct_64byte cls_struct_64byte_fn(struct cls_struct_64byte b0,
    24  			    struct cls_struct_64byte b1,
    25  			    struct cls_struct_64byte b2,
    26  			    struct cls_struct_64byte b3)
    27  {
    28    struct cls_struct_64byte result;
    29  
    30    result.a = b0.a + b1.a + b2.a + b3.a;
    31    result.b = b0.b + b1.b + b2.b + b3.b;
    32    result.c = b0.c + b1.c + b2.c + b3.c;
    33    result.d = b0.d + b1.d + b2.d + b3.d;
    34    result.e = b0.e + b1.e + b2.e + b3.e;
    35    result.f = b0.f + b1.f + b2.f + b3.f;
    36    result.g = b0.g + b1.g + b2.g + b3.g;
    37    result.h = b0.h + b1.h + b2.h + b3.h;
    38  
    39    printf("%g %g %g %g %g %g %g %g\n", result.a, result.b, result.c,
    40  	 result.d, result.e, result.f, result.g, result.h);
    41  
    42    return result;
    43  }
    44  
    45  static void
    46  cls_struct_64byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
    47  		     void* userdata __UNUSED__)
    48  {
    49    struct cls_struct_64byte b0, b1, b2, b3;
    50  
    51    b0 = *(struct cls_struct_64byte*)(args[0]);
    52    b1 = *(struct cls_struct_64byte*)(args[1]);
    53    b2 = *(struct cls_struct_64byte*)(args[2]);
    54    b3 = *(struct cls_struct_64byte*)(args[3]);
    55  
    56    *(cls_struct_64byte*)resp = cls_struct_64byte_fn(b0, b1, b2, b3);
    57  }
    58  
    59  int main (void)
    60  {
    61    ffi_cif cif;
    62    void *code;
    63    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    64    void* args_dbl[5];
    65    ffi_type* cls_struct_fields[9];
    66    ffi_type cls_struct_type;
    67    ffi_type* dbl_arg_types[5];
    68  
    69    struct cls_struct_64byte e_dbl = { 9.0, 2.0, 6.0, 5.0, 3.0, 4.0, 8.0, 1.0 };
    70    struct cls_struct_64byte f_dbl = { 1.0, 2.0, 3.0, 7.0, 2.0, 5.0, 6.0, 7.0 };
    71    struct cls_struct_64byte g_dbl = { 4.0, 5.0, 7.0, 9.0, 1.0, 1.0, 2.0, 9.0 };
    72    struct cls_struct_64byte h_dbl = { 8.0, 6.0, 1.0, 4.0, 0.0, 3.0, 3.0, 1.0 };
    73    struct cls_struct_64byte res_dbl;
    74  
    75    cls_struct_type.size = 0;
    76    cls_struct_type.alignment = 0;
    77    cls_struct_type.type = FFI_TYPE_STRUCT;
    78    cls_struct_type.elements = cls_struct_fields;
    79  
    80    cls_struct_fields[0] = &ffi_type_double;
    81    cls_struct_fields[1] = &ffi_type_double;
    82    cls_struct_fields[2] = &ffi_type_double;
    83    cls_struct_fields[3] = &ffi_type_double;
    84    cls_struct_fields[4] = &ffi_type_double;
    85    cls_struct_fields[5] = &ffi_type_double;
    86    cls_struct_fields[6] = &ffi_type_double;
    87    cls_struct_fields[7] = &ffi_type_double;
    88    cls_struct_fields[8] = NULL;
    89  
    90    dbl_arg_types[0] = &cls_struct_type;
    91    dbl_arg_types[1] = &cls_struct_type;
    92    dbl_arg_types[2] = &cls_struct_type;
    93    dbl_arg_types[3] = &cls_struct_type;
    94    dbl_arg_types[4] = NULL;
    95  
    96    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4, &cls_struct_type,
    97  		     dbl_arg_types) == FFI_OK);
    98  
    99    args_dbl[0] = &e_dbl;
   100    args_dbl[1] = &f_dbl;
   101    args_dbl[2] = &g_dbl;
   102    args_dbl[3] = &h_dbl;
   103    args_dbl[4] = NULL;
   104  
   105    ffi_call(&cif, FFI_FN(cls_struct_64byte_fn), &res_dbl, args_dbl);
   106    /* { dg-output "22 15 17 25 6 13 19 18" } */
   107    printf("res: %g %g %g %g %g %g %g %g\n", res_dbl.a, res_dbl.b, res_dbl.c,
   108  	 res_dbl.d, res_dbl.e, res_dbl.f, res_dbl.g, res_dbl.h);
   109    /* { dg-output "\nres: 22 15 17 25 6 13 19 18" } */
   110  
   111    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_64byte_gn, NULL, code) == FFI_OK);
   112  
   113    res_dbl = ((cls_struct_64byte(*)(cls_struct_64byte,
   114  				   cls_struct_64byte,
   115  				   cls_struct_64byte,
   116  				   cls_struct_64byte))
   117  	     (code))(e_dbl, f_dbl, g_dbl, h_dbl);
   118    /* { dg-output "\n22 15 17 25 6 13 19 18" } */
   119    printf("res: %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);
   121    /* { dg-output "\nres: 22 15 17 25 6 13 19 18" } */
   122  
   123    exit(0);
   124  }