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

     1  /* Area:	ffi_call, closure_call
     2     Purpose:	Check passing of multiple unsigned short 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 short test_func_fn(unsigned short a1, unsigned short a2)
    11  {
    12    unsigned short result;
    13  
    14    result = a1 + a2;
    15  
    16    printf("%d %d: %d\n", a1, a2, result);
    17  
    18    return result;
    19  
    20  }
    21  
    22  static void test_func_gn(ffi_cif *cif __UNUSED__, void *rval, void **avals,
    23  			 void *data __UNUSED__)
    24  {
    25    unsigned short a1, a2;
    26  
    27    a1 = *(unsigned short *)avals[0];
    28    a2 = *(unsigned short *)avals[1];
    29  
    30    *(ffi_arg *)rval = test_func_fn(a1, a2);
    31  
    32  }
    33  
    34  typedef unsigned short (*test_type)(unsigned short, unsigned short);
    35  
    36  int main (void)
    37  {
    38    ffi_cif cif;
    39    void *code;
    40    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    41    void * args_dbl[3];
    42    ffi_type * cl_arg_types[3];
    43    ffi_arg res_call;
    44    unsigned short a, b, res_closure;
    45  
    46    a = 2;
    47    b = 32765;
    48  
    49    args_dbl[0] = &a;
    50    args_dbl[1] = &b;
    51    args_dbl[2] = NULL;
    52  
    53    cl_arg_types[0] = &ffi_type_ushort;
    54    cl_arg_types[1] = &ffi_type_ushort;
    55    cl_arg_types[2] = NULL;
    56  
    57    /* Initialize the cif */
    58    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2,
    59  		     &ffi_type_ushort, cl_arg_types) == FFI_OK);
    60  
    61    ffi_call(&cif, FFI_FN(test_func_fn), &res_call, args_dbl);
    62    /* { dg-output "2 32765: 32767" } */
    63    printf("res: %d\n", (unsigned short)res_call);
    64    /* { dg-output "\nres: 32767" } */
    65  
    66    CHECK(ffi_prep_closure_loc(pcl, &cif, test_func_gn, NULL, code)  == FFI_OK);
    67  
    68    res_closure = (*((test_type)code))(2, 32765);
    69    /* { dg-output "\n2 32765: 32767" } */
    70    printf("res: %d\n", res_closure);
    71    /* { dg-output "\nres: 32767" } */
    72  
    73    exit(0);
    74  }