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