1 /* Area: ffi_call, closure_call 2 Purpose: Check structure passing with different structure size. 3 Contains structs as parameter of the struct itself. 4 Sample taken from Alan Modras patch to src/prep_cif.c. 5 Limitations: none. 6 PR: none. 7 Originator: <andreast (at) gcc.gnu.org> 20051010 */ 8 9 /* { dg-do run } */ 10 #include "ffitest.h" 11 12 typedef struct A { 13 long double a; 14 unsigned char b; 15 } A; 16 17 typedef struct B { 18 struct A x; 19 unsigned char y; 20 } B; 21 22 static B B_fn(struct A b2, struct B b3) 23 { 24 struct B result; 25 26 result.x.a = b2.a + b3.x.a; 27 result.x.b = b2.b + b3.x.b + b3.y; 28 result.y = b2.b + b3.x.b; 29 30 printf("%d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b, 31 (int)b3.x.a, b3.x.b, b3.y, 32 (int)result.x.a, result.x.b, result.y); 33 34 return result; 35 } 36 37 static void 38 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, 39 void* userdata __UNUSED__) 40 { 41 struct A b0; 42 struct B b1; 43 44 b0 = *(struct A*)(args[0]); 45 b1 = *(struct B*)(args[1]); 46 47 *(B*)resp = B_fn(b0, b1); 48 } 49 50 int main (void) 51 { 52 ffi_cif cif; 53 void *code; 54 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code); 55 void* args_dbl[3]; 56 ffi_type* cls_struct_fields[3]; 57 ffi_type* cls_struct_fields1[3]; 58 ffi_type cls_struct_type, cls_struct_type1; 59 ffi_type* dbl_arg_types[3]; 60 61 struct A e_dbl = { 1.0, 7}; 62 struct B f_dbl = {{12.0 , 127}, 99}; 63 64 struct B res_dbl; 65 66 cls_struct_type.size = 0; 67 cls_struct_type.alignment = 0; 68 cls_struct_type.type = FFI_TYPE_STRUCT; 69 cls_struct_type.elements = cls_struct_fields; 70 71 cls_struct_type1.size = 0; 72 cls_struct_type1.alignment = 0; 73 cls_struct_type1.type = FFI_TYPE_STRUCT; 74 cls_struct_type1.elements = cls_struct_fields1; 75 76 cls_struct_fields[0] = &ffi_type_longdouble; 77 cls_struct_fields[1] = &ffi_type_uchar; 78 cls_struct_fields[2] = NULL; 79 80 cls_struct_fields1[0] = &cls_struct_type; 81 cls_struct_fields1[1] = &ffi_type_uchar; 82 cls_struct_fields1[2] = NULL; 83 84 85 dbl_arg_types[0] = &cls_struct_type; 86 dbl_arg_types[1] = &cls_struct_type1; 87 dbl_arg_types[2] = NULL; 88 89 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1, 90 dbl_arg_types) == FFI_OK); 91 92 args_dbl[0] = &e_dbl; 93 args_dbl[1] = &f_dbl; 94 args_dbl[2] = NULL; 95 96 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl); 97 /* { dg-output "1 7 12 127 99: 13 233 134" } */ 98 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); 99 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); 100 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); 101 102 103 CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK); 104 105 res_dbl = ((B(*)(A, B))(code))(e_dbl, f_dbl); 106 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */ 107 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); 108 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); 109 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); 110 111 exit(0); 112 } 113
