1 /* Area: ffi_call, closure_call 2 Purpose: Check structure passing with different structure size. 3 Especially with small structures which may fit in one 4 register. Depending on the ABI. 5 Limitations: none. 6 PR: none. 7 Originator: <andreast (at) gcc.gnu.org> 20030902 */ 8 9 10 11 /* { dg-do run } */ 12 #include "ffitest.h" 13 14 typedef struct cls_struct_1_1byte { 15 unsigned char a; 16 } cls_struct_1_1byte; 17 18 cls_struct_1_1byte cls_struct_1_1byte_fn(struct cls_struct_1_1byte a1, 19 struct cls_struct_1_1byte a2) 20 { 21 struct cls_struct_1_1byte result; 22 23 result.a = a1.a + a2.a; 24 25 printf("%d %d: %d\n", a1.a, a2.a, result.a); 26 27 return result; 28 } 29 30 static void 31 cls_struct_1_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, 32 void* userdata __UNUSED__) 33 { 34 35 struct cls_struct_1_1byte a1, a2; 36 37 a1 = *(struct cls_struct_1_1byte*)(args[0]); 38 a2 = *(struct cls_struct_1_1byte*)(args[1]); 39 40 *(cls_struct_1_1byte*)resp = cls_struct_1_1byte_fn(a1, a2); 41 } 42 43 int main (void) 44 { 45 ffi_cif cif; 46 void *code; 47 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code); 48 void* args_dbl[5]; 49 ffi_type* cls_struct_fields[2]; 50 ffi_type cls_struct_type; 51 ffi_type* dbl_arg_types[5]; 52 53 struct cls_struct_1_1byte g_dbl = { 12 }; 54 struct cls_struct_1_1byte f_dbl = { 178 }; 55 struct cls_struct_1_1byte res_dbl; 56 57 cls_struct_type.size = 0; 58 cls_struct_type.alignment = 0; 59 cls_struct_type.type = FFI_TYPE_STRUCT; 60 cls_struct_type.elements = cls_struct_fields; 61 62 cls_struct_fields[0] = &ffi_type_uchar; 63 cls_struct_fields[1] = NULL; 64 65 dbl_arg_types[0] = &cls_struct_type; 66 dbl_arg_types[1] = &cls_struct_type; 67 dbl_arg_types[2] = NULL; 68 69 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type, 70 dbl_arg_types) == FFI_OK); 71 72 args_dbl[0] = &g_dbl; 73 args_dbl[1] = &f_dbl; 74 args_dbl[2] = NULL; 75 76 ffi_call(&cif, FFI_FN(cls_struct_1_1byte_fn), &res_dbl, args_dbl); 77 /* { dg-output "12 178: 190" } */ 78 printf("res: %d\n", res_dbl.a); 79 /* { dg-output "\nres: 190" } */ 80 81 CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_1_1byte_gn, NULL, code) == FFI_OK); 82 83 res_dbl = ((cls_struct_1_1byte(*)(cls_struct_1_1byte, cls_struct_1_1byte))(code))(g_dbl, f_dbl); 84 /* { dg-output "\n12 178: 190" } */ 85 printf("res: %d\n", res_dbl.a); 86 /* { dg-output "\nres: 190" } */ 87 88 exit(0); 89 } 90
