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 #ifndef USING_MMAP 54 static ffi_closure cl; 55 #endif 56 ffi_closure *pcl; 57 void* args_dbl[3]; 58 ffi_type* cls_struct_fields[3]; 59 ffi_type* cls_struct_fields1[3]; 60 ffi_type cls_struct_type, cls_struct_type1; 61 ffi_type* dbl_arg_types[3]; 62 63 #ifdef USING_MMAP 64 pcl = allocate_mmap (sizeof(ffi_closure)); 65 #else 66 pcl = &cl; 67 #endif 68 69 cls_struct_type.size = 0; 70 cls_struct_type.alignment = 0; 71 cls_struct_type.type = FFI_TYPE_STRUCT; 72 cls_struct_type.elements = cls_struct_fields; 73 74 cls_struct_type1.size = 0; 75 cls_struct_type1.alignment = 0; 76 cls_struct_type1.type = FFI_TYPE_STRUCT; 77 cls_struct_type1.elements = cls_struct_fields1; 78 79 struct A e_dbl = { 1.0, 7}; 80 struct B f_dbl = {{12.0 , 127}, 99}; 81 82 struct B res_dbl; 83 84 cls_struct_fields[0] = &ffi_type_longdouble; 85 cls_struct_fields[1] = &ffi_type_uchar; 86 cls_struct_fields[2] = NULL; 87 88 cls_struct_fields1[0] = &cls_struct_type; 89 cls_struct_fields1[1] = &ffi_type_uchar; 90 cls_struct_fields1[2] = NULL; 91 92 93 dbl_arg_types[0] = &cls_struct_type; 94 dbl_arg_types[1] = &cls_struct_type1; 95 dbl_arg_types[2] = NULL; 96 97 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1, 98 dbl_arg_types) == FFI_OK); 99 100 args_dbl[0] = &e_dbl; 101 args_dbl[1] = &f_dbl; 102 args_dbl[2] = NULL; 103 104 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl); 105 /* { dg-output "1 7 12 127 99: 13 233 134" } */ 106 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); 107 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); 108 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); 109 110 111 CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK); 112 113 res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl); 114 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */ 115 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); 116 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); 117 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); 118 119 exit(0); 120 } 121
