1 /* Area: ffi_call 2 Purpose: Test passing struct in variable argument lists. 3 Limitations: none. 4 PR: none. 5 Originator: ARM Ltd. */ 6 7 /* { dg-do run } */ 8 /* { dg-output "" { xfail avr32*-*-* } } */ 9 10 #include "ffitest.h" 11 #include <stdarg.h> 12 13 struct small_tag 14 { 15 unsigned char a; 16 unsigned char b; 17 }; 18 19 struct large_tag 20 { 21 unsigned a; 22 unsigned b; 23 unsigned c; 24 unsigned d; 25 unsigned e; 26 }; 27 28 static int 29 test_fn (int n, ...) 30 { 31 va_list ap; 32 struct small_tag s1; 33 struct small_tag s2; 34 struct large_tag l; 35 36 va_start (ap, n); 37 s1 = va_arg (ap, struct small_tag); 38 l = va_arg (ap, struct large_tag); 39 s2 = va_arg (ap, struct small_tag); 40 printf ("%u %u %u %u %u %u %u %u %u\n", s1.a, s1.b, l.a, l.b, l.c, l.d, l.e, 41 s2.a, s2.b); 42 va_end (ap); 43 return n + 1; 44 } 45 46 int 47 main (void) 48 { 49 ffi_cif cif; 50 void* args[5]; 51 ffi_type* arg_types[5]; 52 53 ffi_type s_type; 54 ffi_type *s_type_elements[3]; 55 56 ffi_type l_type; 57 ffi_type *l_type_elements[6]; 58 59 struct small_tag s1; 60 struct small_tag s2; 61 struct large_tag l1; 62 63 int n; 64 ffi_arg res; 65 66 s_type.size = 0; 67 s_type.alignment = 0; 68 s_type.type = FFI_TYPE_STRUCT; 69 s_type.elements = s_type_elements; 70 71 s_type_elements[0] = &ffi_type_uchar; 72 s_type_elements[1] = &ffi_type_uchar; 73 s_type_elements[2] = NULL; 74 75 l_type.size = 0; 76 l_type.alignment = 0; 77 l_type.type = FFI_TYPE_STRUCT; 78 l_type.elements = l_type_elements; 79 80 l_type_elements[0] = &ffi_type_uint; 81 l_type_elements[1] = &ffi_type_uint; 82 l_type_elements[2] = &ffi_type_uint; 83 l_type_elements[3] = &ffi_type_uint; 84 l_type_elements[4] = &ffi_type_uint; 85 l_type_elements[5] = NULL; 86 87 arg_types[0] = &ffi_type_sint; 88 arg_types[1] = &s_type; 89 arg_types[2] = &l_type; 90 arg_types[3] = &s_type; 91 arg_types[4] = NULL; 92 93 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 4, &ffi_type_sint, arg_types) == FFI_OK); 94 95 s1.a = 5; 96 s1.b = 6; 97 98 l1.a = 10; 99 l1.b = 11; 100 l1.c = 12; 101 l1.d = 13; 102 l1.e = 14; 103 104 s2.a = 7; 105 s2.b = 8; 106 107 n = 41; 108 109 args[0] = &n; 110 args[1] = &s1; 111 args[2] = &l1; 112 args[3] = &s2; 113 args[4] = NULL; 114 115 ffi_call(&cif, FFI_FN(test_fn), &res, args); 116 /* { dg-output "5 6 10 11 12 13 14 7 8" } */ 117 printf("res: %d\n", (int) res); 118 /* { dg-output "\nres: 42" } */ 119 120 return 0; 121 } 122
