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

     1  /* Area:	ffi_call, closure_call
     2     Purpose:	Check passing of multiple signed short/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  signed short test_func_fn(signed char a1, signed short a2,
    11  			  signed char a3, signed short a4)
    12  {
    13    signed short 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    signed char a1, a3;
    27    signed short a2, a4;
    28  
    29    a1 = *(signed char *)avals[0];
    30    a2 = *(signed short *)avals[1];
    31    a3 = *(signed char *)avals[2];
    32    a4 = *(signed short *)avals[3];
    33  
    34    *(ffi_arg *)rval = test_func_fn(a1, a2, a3, a4);
    35  
    36  }
    37  
    38  typedef signed short (*test_type)(signed char, signed short,
    39  				  signed char, signed short);
    40  
    41  int main (void)
    42  {
    43    ffi_cif cif;
    44    void *code;
    45    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    46    void * args_dbl[5];
    47    ffi_type * cl_arg_types[5];
    48    ffi_arg res_call;
    49    signed char a, c;
    50    signed short b, d, res_closure;
    51  
    52    a = 1;
    53    b = 32765;
    54    c = 127;
    55    d = -128;
    56  
    57    args_dbl[0] = &a;
    58    args_dbl[1] = &b;
    59    args_dbl[2] = &c;
    60    args_dbl[3] = &d;
    61    args_dbl[4] = NULL;
    62  
    63    cl_arg_types[0] = &ffi_type_schar;
    64    cl_arg_types[1] = &ffi_type_sshort;
    65    cl_arg_types[2] = &ffi_type_schar;
    66    cl_arg_types[3] = &ffi_type_sshort;
    67    cl_arg_types[4] = NULL;
    68  
    69    /* Initialize the cif */
    70    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4,
    71  		     &ffi_type_sshort, cl_arg_types) == FFI_OK);
    72  
    73    ffi_call(&cif, FFI_FN(test_func_fn), &res_call, args_dbl);
    74    /* { dg-output "1 32765 127 -128: 32765" } */
    75    printf("res: %d\n", (signed short)res_call);
    76    /* { dg-output "\nres: 32765" } */
    77  
    78    CHECK(ffi_prep_closure_loc(pcl, &cif, test_func_gn, NULL, code)  == FFI_OK);
    79  
    80    res_closure = (*((test_type)code))(1, 32765, 127, -128);
    81    /* { dg-output "\n1 32765 127 -128: 32765" } */
    82    printf("res: %d\n", res_closure);
    83    /* { dg-output "\nres: 32765" } */
    84  
    85    exit(0);
    86  }