github.com/prattmic/llgo-embedded@v0.0.0-20150820070356-41cfecea0e1e/third_party/gofrontend/libffi/testsuite/libffi.call/cls_align_sint16.c (about)

     1  /* Area:	ffi_call, closure_call
     2     Purpose:	Check structure alignment of sint16.
     3     Limitations:	none.
     4     PR:		none.
     5     Originator:	<hos@tamanegi.org> 20031203	 */
     6  
     7  /* { dg-do run } */
     8  #include "ffitest.h"
     9  
    10  typedef struct cls_struct_align {
    11    unsigned char a;
    12    signed short b;
    13    unsigned char c;
    14  } cls_struct_align;
    15  
    16  cls_struct_align cls_struct_align_fn(struct cls_struct_align a1,
    17  			    struct cls_struct_align a2)
    18  {
    19    struct cls_struct_align result;
    20  
    21    result.a = a1.a + a2.a;
    22    result.b = a1.b + a2.b;
    23    result.c = a1.c + a2.c;
    24  
    25    printf("%d %d %d %d %d %d: %d %d %d\n", a1.a, a1.b, a1.c, a2.a, a2.b, a2.c, result.a, result.b, result.c);
    26  
    27    return  result;
    28  }
    29  
    30  static void
    31  cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
    32  		    void* userdata __UNUSED__)
    33  {
    34  
    35    struct cls_struct_align a1, a2;
    36  
    37    a1 = *(struct cls_struct_align*)(args[0]);
    38    a2 = *(struct cls_struct_align*)(args[1]);
    39  
    40    *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
    41  }
    42  
    43  int main (void)
    44  {
    45    ffi_cif cif;
    46    void *code;
    47    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    48    void* args_dbl[5];
    49    ffi_type* cls_struct_fields[4];
    50    ffi_type cls_struct_type;
    51    ffi_type* dbl_arg_types[5];
    52  
    53    struct cls_struct_align g_dbl = { 12, 4951, 127 };
    54    struct cls_struct_align f_dbl = { 1, 9320, 13 };
    55    struct cls_struct_align res_dbl;
    56  
    57    cls_struct_type.size = 0;
    58    cls_struct_type.alignment = 0;
    59    cls_struct_type.type = FFI_TYPE_STRUCT;
    60    cls_struct_type.elements = cls_struct_fields;
    61  
    62    cls_struct_fields[0] = &ffi_type_uchar;
    63    cls_struct_fields[1] = &ffi_type_sshort;
    64    cls_struct_fields[2] = &ffi_type_uchar;
    65    cls_struct_fields[3] = NULL;
    66  
    67    dbl_arg_types[0] = &cls_struct_type;
    68    dbl_arg_types[1] = &cls_struct_type;
    69    dbl_arg_types[2] = NULL;
    70  
    71    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
    72  		     dbl_arg_types) == FFI_OK);
    73  
    74    args_dbl[0] = &g_dbl;
    75    args_dbl[1] = &f_dbl;
    76    args_dbl[2] = NULL;
    77  
    78    ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
    79    /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
    80    printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
    81    /* { dg-output "\nres: 13 14271 140" } */
    82  
    83    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
    84  
    85    res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl);
    86    /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
    87    printf("res: %d %d %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
    88    /* { dg-output "\nres: 13 14271 140" } */
    89  
    90    exit(0);
    91  }