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> 20030911 */ 8 9 /* { dg-do run } */ 10 #include "ffitest.h" 11 12 typedef struct A { 13 unsigned long a; 14 unsigned char b; 15 } A; 16 17 typedef struct B { 18 struct A x; 19 unsigned char y; 20 } B; 21 22 B B_fn(struct A b0, struct B b1) 23 { 24 struct B result; 25 26 result.x.a = b0.a + b1.x.a; 27 result.x.b = b0.b + b1.x.b + b1.y; 28 result.y = b0.b + b1.x.b; 29 30 printf("%lu %d %lu %d %d: %lu %d %d\n", b0.a, b0.b, b1.x.a, b1.x.b, b1.y, 31 result.x.a, result.x.b, result.y); 32 33 return result; 34 } 35 36 static void 37 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, 38 void* userdata __UNUSED__) 39 { 40 struct A b0; 41 struct B b1; 42 43 b0 = *(struct A*)(args[0]); 44 b1 = *(struct B*)(args[1]); 45 46 *(B*)resp = B_fn(b0, b1); 47 } 48 49 int main (void) 50 { 51 ffi_cif cif; 52 #ifndef USING_MMAP 53 static ffi_closure cl; 54 #endif 55 ffi_closure *pcl; 56 void* args_dbl[3]; 57 ffi_type* cls_struct_fields[3]; 58 ffi_type* cls_struct_fields1[3]; 59 ffi_type cls_struct_type, cls_struct_type1; 60 ffi_type* dbl_arg_types[3]; 61 62 #ifdef USING_MMAP 63 pcl = allocate_mmap (sizeof(ffi_closure)); 64 #else 65 pcl = &cl; 66 #endif 67 68 cls_struct_type.size = 0; 69 cls_struct_type.alignment = 0; 70 cls_struct_type.type = FFI_TYPE_STRUCT; 71 cls_struct_type.elements = cls_struct_fields; 72 73 cls_struct_type1.size = 0; 74 cls_struct_type1.alignment = 0; 75 cls_struct_type1.type = FFI_TYPE_STRUCT; 76 cls_struct_type1.elements = cls_struct_fields1; 77 78 struct A e_dbl = { 1, 7}; 79 struct B f_dbl = {{12 , 127}, 99}; 80 81 struct B res_dbl; 82 83 cls_struct_fields[0] = &ffi_type_ulong; 84 cls_struct_fields[1] = &ffi_type_uchar; 85 cls_struct_fields[2] = NULL; 86 87 cls_struct_fields1[0] = &cls_struct_type; 88 cls_struct_fields1[1] = &ffi_type_uchar; 89 cls_struct_fields1[2] = NULL; 90 91 92 dbl_arg_types[0] = &cls_struct_type; 93 dbl_arg_types[1] = &cls_struct_type1; 94 dbl_arg_types[2] = NULL; 95 96 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1, 97 dbl_arg_types) == FFI_OK); 98 99 args_dbl[0] = &e_dbl; 100 args_dbl[1] = &f_dbl; 101 args_dbl[2] = NULL; 102 103 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl); 104 /* { dg-output "1 7 12 127 99: 13 233 134" } */ 105 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); 106 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); 107 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); 108 109 CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK); 110 111 res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl); 112 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */ 113 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); 114 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); 115 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); 116 117 exit(0); 118 } 119
