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 char a; 14 unsigned long long b; 15 } A; 16 17 typedef struct B { 18 struct A x; 19 unsigned char y; 20 } B; 21 22 typedef struct C { 23 unsigned long d; 24 unsigned char e; 25 } C; 26 27 static B B_fn(struct A b2, struct B b3, struct C b4) 28 { 29 struct B result; 30 31 result.x.a = b2.a + b3.x.a + b4.d; 32 result.x.b = b2.b + b3.x.b + b3.y + b4.e; 33 result.y = b2.b + b3.x.b + b4.e; 34 35 printf("%d %d %d %d %d %d %d: %d %d %d\n", b2.a, (int)b2.b, 36 b3.x.a, (int)b3.x.b, b3.y, (int)b4.d, b4.e, 37 result.x.a, (int)result.x.b, result.y); 38 39 return result; 40 } 41 42 static void 43 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args, 44 void* userdata __UNUSED__) 45 { 46 struct A b0; 47 struct B b1; 48 struct C b2; 49 50 b0 = *(struct A*)(args[0]); 51 b1 = *(struct B*)(args[1]); 52 b2 = *(struct C*)(args[2]); 53 54 *(B*)resp = B_fn(b0, b1, b2); 55 } 56 57 int main (void) 58 { 59 ffi_cif cif; 60 #ifndef USING_MMAP 61 static ffi_closure cl; 62 #endif 63 ffi_closure *pcl; 64 void* args_dbl[4]; 65 ffi_type* cls_struct_fields[3]; 66 ffi_type* cls_struct_fields1[3]; 67 ffi_type* cls_struct_fields2[3]; 68 ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2; 69 ffi_type* dbl_arg_types[4]; 70 71 #ifdef USING_MMAP 72 pcl = allocate_mmap (sizeof(ffi_closure)); 73 #else 74 pcl = &cl; 75 #endif 76 77 cls_struct_type.size = 0; 78 cls_struct_type.alignment = 0; 79 cls_struct_type.type = FFI_TYPE_STRUCT; 80 cls_struct_type.elements = cls_struct_fields; 81 82 cls_struct_type1.size = 0; 83 cls_struct_type1.alignment = 0; 84 cls_struct_type1.type = FFI_TYPE_STRUCT; 85 cls_struct_type1.elements = cls_struct_fields1; 86 87 cls_struct_type2.size = 0; 88 cls_struct_type2.alignment = 0; 89 cls_struct_type2.type = FFI_TYPE_STRUCT; 90 cls_struct_type2.elements = cls_struct_fields2; 91 92 struct A e_dbl = { 1, 7LL}; 93 struct B f_dbl = {{12.0 , 127}, 99}; 94 struct C g_dbl = { 2, 9}; 95 96 struct B res_dbl; 97 98 cls_struct_fields[0] = &ffi_type_uchar; 99 cls_struct_fields[1] = &ffi_type_uint64; 100 cls_struct_fields[2] = NULL; 101 102 cls_struct_fields1[0] = &cls_struct_type; 103 cls_struct_fields1[1] = &ffi_type_uchar; 104 cls_struct_fields1[2] = NULL; 105 106 cls_struct_fields2[0] = &ffi_type_ulong; 107 cls_struct_fields2[1] = &ffi_type_uchar; 108 cls_struct_fields2[2] = NULL; 109 110 111 dbl_arg_types[0] = &cls_struct_type; 112 dbl_arg_types[1] = &cls_struct_type1; 113 dbl_arg_types[2] = &cls_struct_type2; 114 dbl_arg_types[3] = NULL; 115 116 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1, 117 dbl_arg_types) == FFI_OK); 118 119 args_dbl[0] = &e_dbl; 120 args_dbl[1] = &f_dbl; 121 args_dbl[2] = &g_dbl; 122 args_dbl[3] = NULL; 123 124 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl); 125 /* { dg-output "1 7 12 127 99 2 9: 15 242 143" } */ 126 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d)); 127 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e)); 128 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e)); 129 130 CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK); 131 132 res_dbl = ((B(*)(A, B, C))(pcl))(e_dbl, f_dbl, g_dbl); 133 /* { dg-output "\n1 7 12 127 99 2 9: 15 242 143" } */ 134 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d)); 135 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e)); 136 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e)); 137 138 exit(0); 139 } 140
