1 /* Area: ffi_call 2 Purpose: Check structures. 3 Limitations: none. 4 PR: none. 5 Originator: From the original ffitest.c */ 6 7 /* { dg-do run } */ 8 #include "ffitest.h" 9 10 typedef struct 11 { 12 unsigned char uc; 13 double d; 14 unsigned int ui; 15 } test_structure_1; 16 17 static test_structure_1 struct1(test_structure_1 ts) 18 { 19 ts.uc++; 20 ts.d--; 21 ts.ui++; 22 23 return ts; 24 } 25 26 int main (void) 27 { 28 ffi_cif cif; 29 ffi_type *args[MAX_ARGS]; 30 void *values[MAX_ARGS]; 31 ffi_type ts1_type; 32 ffi_type *ts1_type_elements[4]; 33 ts1_type.size = 0; 34 ts1_type.alignment = 0; 35 ts1_type.type = FFI_TYPE_STRUCT; 36 ts1_type.elements = ts1_type_elements; 37 ts1_type_elements[0] = &ffi_type_uchar; 38 ts1_type_elements[1] = &ffi_type_double; 39 ts1_type_elements[2] = &ffi_type_uint; 40 ts1_type_elements[3] = NULL; 41 42 test_structure_1 ts1_arg; 43 /* This is a hack to get a properly aligned result buffer */ 44 test_structure_1 *ts1_result = 45 (test_structure_1 *) malloc (sizeof(test_structure_1)); 46 47 args[0] = &ts1_type; 48 values[0] = &ts1_arg; 49 50 /* Initialize the cif */ 51 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, 52 &ts1_type, args) == FFI_OK); 53 54 ts1_arg.uc = '\x01'; 55 ts1_arg.d = 3.14159; 56 ts1_arg.ui = 555; 57 58 ffi_call(&cif, FFI_FN(struct1), ts1_result, values); 59 60 CHECK(ts1_result->ui == 556); 61 CHECK(ts1_result->d == 3.14159 - 1); 62 63 free (ts1_result); 64 exit(0); 65 } 66
