| /* Area: ffi_call, closure_call |
| Purpose: Check structure passing with different structure size. |
| Contains structs as parameter of the struct itself. |
| Sample taken from Alan Modras patch to src/prep_cif.c. |
| Limitations: none. |
| PR: none. |
| Originator: <andreast@gcc.gnu.org> 20030911 */ |
| |
| /* { dg-do run } */ |
| #include "ffitest.h" |
| |
| typedef struct A { |
| unsigned long long a; |
| unsigned char b; |
| } A; |
| |
| typedef struct B { |
| struct A x; |
| unsigned char y; |
| } B; |
| |
| B B_fn(struct A b0, struct B b1) |
| { |
| struct B result; |
| |
| result.x.a = b0.a + b1.x.a; |
| result.x.b = b0.b + b1.x.b + b1.y; |
| result.y = b0.b + b1.x.b; |
| |
| printf("%d %d %d %d %d: %d %d %d\n", (int)b0.a, b0.b, |
| (int)b1.x.a, b1.x.b, b1.y, |
| (int)result.x.a, result.x.b, result.y); |
| |
| return result; |
| } |
| |
| static void |
| B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, |
| void* userdata __UNUSED__) |
| { |
| struct A b0; |
| struct B b1; |
| |
| b0 = *(struct A*)(args[0]); |
| b1 = *(struct B*)(args[1]); |
| |
| *(B*)resp = B_fn(b0, b1); |
| } |
| |
| int main (void) |
| { |
| ffi_cif cif; |
| void *code; |
| ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code); |
| void* args_dbl[3]; |
| ffi_type* cls_struct_fields[3]; |
| ffi_type* cls_struct_fields1[3]; |
| ffi_type cls_struct_type, cls_struct_type1; |
| ffi_type* dbl_arg_types[3]; |
| |
| struct A e_dbl = { 1LL, 7}; |
| struct B f_dbl = {{12LL , 127}, 99}; |
| |
| struct B res_dbl; |
| |
| cls_struct_type.size = 0; |
| cls_struct_type.alignment = 0; |
| cls_struct_type.type = FFI_TYPE_STRUCT; |
| cls_struct_type.elements = cls_struct_fields; |
| |
| cls_struct_type1.size = 0; |
| cls_struct_type1.alignment = 0; |
| cls_struct_type1.type = FFI_TYPE_STRUCT; |
| cls_struct_type1.elements = cls_struct_fields1; |
| |
| cls_struct_fields[0] = &ffi_type_uint64; |
| cls_struct_fields[1] = &ffi_type_uchar; |
| cls_struct_fields[2] = NULL; |
| |
| cls_struct_fields1[0] = &cls_struct_type; |
| cls_struct_fields1[1] = &ffi_type_uchar; |
| cls_struct_fields1[2] = NULL; |
| |
| |
| dbl_arg_types[0] = &cls_struct_type; |
| dbl_arg_types[1] = &cls_struct_type1; |
| dbl_arg_types[2] = NULL; |
| |
| CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1, |
| dbl_arg_types) == FFI_OK); |
| |
| args_dbl[0] = &e_dbl; |
| args_dbl[1] = &f_dbl; |
| args_dbl[2] = NULL; |
| |
| ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl); |
| /* { dg-output "1 7 12 127 99: 13 233 134" } */ |
| CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); |
| CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); |
| CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); |
| |
| |
| CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK); |
| |
| res_dbl = ((B(*)(A, B))(code))(e_dbl, f_dbl); |
| /* { dg-output "\n1 7 12 127 99: 13 233 134" } */ |
| CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a)); |
| CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y)); |
| CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b)); |
| exit(0); |
| } |