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 unsigned long long a; 14 unsigned char b; 15 } A; 16 17 typedef struct B { 18 unsigned char y; 19 struct A x; 20 unsigned int z; 21 } B; 22 23 typedef struct C { 24 unsigned long long d; 25 unsigned char e; 26 } C; 27 28 static B B_fn(struct A b2, struct B b3, struct C b4) 29 { 30 struct B result; 31 32 result.x.a = b2.a + b3.x.a + b3.z + b4.d; 33 result.x.b = b2.b + b3.x.b + b3.y + b4.e; 34 result.y = b2.b + b3.x.b + b4.e; 35 36 printf("%d %d %d %d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b, 37 (int)b3.x.a, b3.x.b, b3.y, b3.z, (int)b4.d, b4.e, 38 (int)result.x.a, result.x.b, result.y); 39 40 return result; 41 } 42 43 static void 44 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, 45 void* userdata __UNUSED__) 46 { 47 struct A b0; 48 struct B b1; 49 struct C b2; 50 51 b0 = *(struct A*)(args[0]); 52 b1 = *(struct B*)(args[1]); 53 b2 = *(struct C*)(args[2]); 54 55 *(B*)resp = B_fn(b0, b1, b2); 56 } 57 58 int main (void) 59 { 60 ffi_cif cif; 61 void *code; 62 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code); 63 void* args_dbl[4]; 64 ffi_type* cls_struct_fields[3]; 65 ffi_type* cls_struct_fields1[4]; 66 ffi_type* cls_struct_fields2[3]; 67 ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2; 68 ffi_type* dbl_arg_types[4]; 69 70 struct A e_dbl = { 1LL, 7}; 71 struct B f_dbl = { 99, {12LL , 127}, 255}; 72 struct C g_dbl = { 2LL, 9}; 73 74 struct B res_dbl; 75 76 cls_struct_type.size = 0; 77 cls_struct_type.alignment = 0; 78 cls_struct_type.type = FFI_TYPE_STRUCT; 79 cls_struct_type.elements = cls_struct_fields; 80 81 cls_struct_type1.size = 0; 82 cls_struct_type1.alignment = 0; 83 cls_struct_type1.type = FFI_TYPE_STRUCT; 84 cls_struct_type1.elements = cls_struct_fields1; 85 86 cls_struct_type2.size = 0; 87 cls_struct_type2.alignment = 0; 88 cls_struct_type2.type = FFI_TYPE_STRUCT; 89 cls_struct_type2.elements = cls_struct_fields2; 90 91 cls_struct_fields[0] = &ffi_type_uint64; 92 cls_struct_fields[1] = &ffi_type_uchar; 93 cls_struct_fields[2] = NULL; 94 95 cls_struct_fields1[0] = &ffi_type_uchar; 96 cls_struct_fields1[1] = &cls_struct_type; 97 cls_struct_fields1[2] = &ffi_type_uint; 98 cls_struct_fields1[3] = NULL; 99 100 cls_struct_fields2[0] = &ffi_type_uint64; 101 cls_struct_fields2[1] = &ffi_type_uchar; 102 cls_struct_fields2[2] = NULL; 103 104 105 dbl_arg_types[0] = &cls_struct_type; 106 dbl_arg_types[1] = &cls_struct_type1; 107 dbl_arg_types[2] = &cls_struct_type2; 108 dbl_arg_types[3] = NULL; 109 110 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1, 111 dbl_arg_types) == FFI_OK); 112 113 args_dbl[0] = &e_dbl; 114 args_dbl[1] = &f_dbl; 115 args_dbl[2] = &g_dbl; 116 args_dbl[3] = NULL; 117 118 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl); 119 /* { dg-output "1 7 12 127 99 255 2 9: 270 242 143" } */ 120 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d)); 121 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e)); 122 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e)); 123 124 CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK); 125 126 res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl); 127 /* { dg-output "\n1 7 12 127 99 255 2 9: 270 242 143" } */ 128 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + f_dbl.z + g_dbl.d)); 129 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e)); 130 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e)); 131 132 exit(0); 133 } 134
