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. Check overlapping. 5 Limitations: none. 6 PR: none. 7 Originator: <andreast (at) gcc.gnu.org> 20030828 */ 8 9 /* { dg-do run } */ 10 #include "ffitest.h" 11 12 typedef struct cls_struct_3byte_1 { 13 unsigned char a; 14 unsigned short b; 15 } cls_struct_3byte_1; 16 17 cls_struct_3byte_1 cls_struct_3byte_fn1(struct cls_struct_3byte_1 a1, 18 struct cls_struct_3byte_1 a2) 19 { 20 struct cls_struct_3byte_1 result; 21 22 result.a = a1.a + a2.a; 23 result.b = a1.b + a2.b; 24 25 printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b); 26 27 return result; 28 } 29 30 static void 31 cls_struct_3byte_gn1(ffi_cif* cif __UNUSED__, void* resp, void** args, 32 void* userdata __UNUSED__) 33 { 34 35 struct cls_struct_3byte_1 a1, a2; 36 37 a1 = *(struct cls_struct_3byte_1*)(args[0]); 38 a2 = *(struct cls_struct_3byte_1*)(args[1]); 39 40 *(cls_struct_3byte_1*)resp = cls_struct_3byte_fn1(a1, a2); 41 } 42 43 int main (void) 44 { 45 ffi_cif cif; 46 #ifndef USING_MMAP 47 static ffi_closure cl; 48 #endif 49 ffi_closure *pcl; 50 void* args_dbl[5]; 51 ffi_type* cls_struct_fields[4]; 52 ffi_type cls_struct_type; 53 ffi_type* dbl_arg_types[5]; 54 55 #ifdef USING_MMAP 56 pcl = allocate_mmap (sizeof(ffi_closure)); 57 #else 58 pcl = &cl; 59 #endif 60 61 cls_struct_type.size = 0; 62 cls_struct_type.alignment = 0; 63 cls_struct_type.type = FFI_TYPE_STRUCT; 64 cls_struct_type.elements = cls_struct_fields; 65 66 struct cls_struct_3byte_1 g_dbl = { 15, 125 }; 67 struct cls_struct_3byte_1 f_dbl = { 9, 19 }; 68 struct cls_struct_3byte_1 res_dbl; 69 70 cls_struct_fields[0] = &ffi_type_uchar; 71 cls_struct_fields[1] = &ffi_type_ushort; 72 cls_struct_fields[2] = NULL; 73 74 dbl_arg_types[0] = &cls_struct_type; 75 dbl_arg_types[1] = &cls_struct_type; 76 dbl_arg_types[2] = NULL; 77 78 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type, 79 dbl_arg_types) == FFI_OK); 80 81 args_dbl[0] = &g_dbl; 82 args_dbl[1] = &f_dbl; 83 args_dbl[2] = NULL; 84 85 ffi_call(&cif, FFI_FN(cls_struct_3byte_fn1), &res_dbl, args_dbl); 86 /* { dg-output "15 125 9 19: 24 144" } */ 87 printf("res: %d %d\n", res_dbl.a, res_dbl.b); 88 /* { dg-output "\nres: 24 144" } */ 89 90 CHECK(ffi_prep_closure(pcl, &cif, cls_struct_3byte_gn1, NULL) == FFI_OK); 91 92 res_dbl = ((cls_struct_3byte_1(*)(cls_struct_3byte_1, cls_struct_3byte_1))(pcl))(g_dbl, f_dbl); 93 /* { dg-output "\n15 125 9 19: 24 144" } */ 94 printf("res: %d %d\n", res_dbl.a, res_dbl.b); 95 /* { dg-output "\nres: 24 144" } */ 96 97 exit(0); 98 } 99
