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 struct large_tag 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 l.a += s1.a; 44 l.b += s1.b; 45 l.c += s2.a; 46 l.d += s2.b; 47 return l; 48 } 49 50 int 51 main (void) 52 { 53 ffi_cif cif; 54 void* args[5]; 55 ffi_type* arg_types[5]; 56 57 ffi_type s_type; 58 ffi_type *s_type_elements[3]; 59 60 ffi_type l_type; 61 ffi_type *l_type_elements[6]; 62 63 struct small_tag s1; 64 struct small_tag s2; 65 struct large_tag l1; 66 67 int n; 68 struct large_tag res; 69 70 s_type.size = 0; 71 s_type.alignment = 0; 72 s_type.type = FFI_TYPE_STRUCT; 73 s_type.elements = s_type_elements; 74 75 s_type_elements[0] = &ffi_type_uchar; 76 s_type_elements[1] = &ffi_type_uchar; 77 s_type_elements[2] = NULL; 78 79 l_type.size = 0; 80 l_type.alignment = 0; 81 l_type.type = FFI_TYPE_STRUCT; 82 l_type.elements = l_type_elements; 83 84 l_type_elements[0] = &ffi_type_uint; 85 l_type_elements[1] = &ffi_type_uint; 86 l_type_elements[2] = &ffi_type_uint; 87 l_type_elements[3] = &ffi_type_uint; 88 l_type_elements[4] = &ffi_type_uint; 89 l_type_elements[5] = NULL; 90 91 arg_types[0] = &ffi_type_sint; 92 arg_types[1] = &s_type; 93 arg_types[2] = &l_type; 94 arg_types[3] = &s_type; 95 arg_types[4] = NULL; 96 97 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 4, &l_type, arg_types) == FFI_OK); 98 99 s1.a = 5; 100 s1.b = 6; 101 102 l1.a = 10; 103 l1.b = 11; 104 l1.c = 12; 105 l1.d = 13; 106 l1.e = 14; 107 108 s2.a = 7; 109 s2.b = 8; 110 111 n = 41; 112 113 args[0] = &n; 114 args[1] = &s1; 115 args[2] = &l1; 116 args[3] = &s2; 117 args[4] = NULL; 118 119 ffi_call(&cif, FFI_FN(test_fn), &res, args); 120 /* { dg-output "5 6 10 11 12 13 14 7 8" } */ 121 printf("res: %d %d %d %d %d\n", res.a, res.b, res.c, res.d, res.e); 122 /* { dg-output "\nres: 15 17 19 21 14" } */ 123 124 return 0; 125 } 126
