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

     1  /* Area:	ffi_call, closure_call
     2     Purpose:	Check passing of multiple unsigned char values.
     3     Limitations:	none.
     4     PR:		PR13221.
     5     Originator:	<andreast@gcc.gnu.org> 20031129  */
     6  
     7  /* { dg-do run } */
     8  #include "ffitest.h"
     9  
    10  unsigned char test_func_fn(unsigned char a1, unsigned char a2,
    11  			   unsigned char a3, unsigned char a4)
    12  {
    13    unsigned char result;
    14  
    15    result = a1 + a2 + a3 + a4;
    16  
    17    printf("%d %d %d %d: %d\n", a1, a2, a3, a4, result);
    18  
    19    return result;
    20  
    21  }
    22  
    23  static void test_func_gn(ffi_cif *cif __UNUSED__, void *rval, void **avals,
    24  			 void *data __UNUSED__)
    25  {
    26    unsigned char a1, a2, a3, a4;
    27  
    28    a1 = *(unsigned char *)avals[0];
    29    a2 = *(unsigned char *)avals[1];
    30    a3 = *(unsigned char *)avals[2];
    31    a4 = *(unsigned char *)avals[3];
    32  
    33    *(ffi_arg *)rval = test_func_fn(a1, a2, a3, a4);
    34  
    35  }
    36  
    37  typedef unsigned char (*test_type)(unsigned char, unsigned char,
    38  				   unsigned char, unsigned char);
    39  
    40  void test_func(ffi_cif *cif __UNUSED__, void *rval __UNUSED__, void **avals,
    41  	       void *data __UNUSED__)
    42  {
    43    printf("%d %d %d %d\n", *(unsigned char *)avals[0],
    44  	 *(unsigned char *)avals[1], *(unsigned char *)avals[2],
    45  	 *(unsigned char *)avals[3]);
    46  }
    47  int main (void)
    48  {
    49    ffi_cif cif;
    50    void *code;
    51    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    52    void * args_dbl[5];
    53    ffi_type * cl_arg_types[5];
    54    ffi_arg res_call;
    55    unsigned char a, b, c, d, res_closure;
    56  
    57    a = 1;
    58    b = 2;
    59    c = 127;
    60    d = 125;
    61  
    62    args_dbl[0] = &a;
    63    args_dbl[1] = &b;
    64    args_dbl[2] = &c;
    65    args_dbl[3] = &d;
    66    args_dbl[4] = NULL;
    67  
    68    cl_arg_types[0] = &ffi_type_uchar;
    69    cl_arg_types[1] = &ffi_type_uchar;
    70    cl_arg_types[2] = &ffi_type_uchar;
    71    cl_arg_types[3] = &ffi_type_uchar;
    72    cl_arg_types[4] = NULL;
    73  
    74    /* Initialize the cif */
    75    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4,
    76  		     &ffi_type_uchar, cl_arg_types) == FFI_OK);
    77  
    78    ffi_call(&cif, FFI_FN(test_func_fn), &res_call, args_dbl);
    79    /* { dg-output "1 2 127 125: 255" } */
    80    printf("res: %d\n", (unsigned char)res_call);
    81    /* { dg-output "\nres: 255" } */
    82  
    83    CHECK(ffi_prep_closure_loc(pcl, &cif, test_func_gn, NULL, code)  == FFI_OK);
    84  
    85    res_closure = (*((test_type)code))(1, 2, 127, 125);
    86    /* { dg-output "\n1 2 127 125: 255" } */
    87    printf("res: %d\n", res_closure);
    88    /* { dg-output "\nres: 255" } */
    89  
    90    exit(0);
    91  }