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1 /* Area:	ffi_call, closure_call
2    Purpose:	Check structure alignment of pointer.
3    Limitations:	none.
4    PR:		none.
5    Originator:	<hos@tamanegi.org> 20031203	 */
6 
7 /* { dg-do run } */
8 #include "ffitest.h"
9 
10 typedef struct cls_struct_align {
11   unsigned char a;
12   void *b;
13   unsigned char c;
14 } cls_struct_align;
15 
cls_struct_align_fn(struct cls_struct_align a1,struct cls_struct_align a2)16 cls_struct_align cls_struct_align_fn(struct cls_struct_align a1,
17 			    struct cls_struct_align a2)
18 {
19   struct cls_struct_align result;
20 
21   result.a = a1.a + a2.a;
22   result.b = (void *)((uintptr_t)a1.b + (uintptr_t)a2.b);
23   result.c = a1.c + a2.c;
24 
25   printf("%d %" PRIuPTR " %d %d %" PRIuPTR " %d: %d %" PRIuPTR " %d\n",
26          a1.a, (uintptr_t)a1.b, a1.c,
27 	 a2.a, (uintptr_t)a2.b, a2.c,
28          result.a, (uintptr_t)result.b,
29 	 result.c);
30 
31   return result;
32 }
33 
34 static void
cls_struct_align_gn(ffi_cif * cif __UNUSED__,void * resp,void ** args,void * userdata __UNUSED__)35 cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
36 		    void* userdata __UNUSED__)
37 {
38 
39   struct cls_struct_align a1, a2;
40 
41   a1 = *(struct cls_struct_align*)(args[0]);
42   a2 = *(struct cls_struct_align*)(args[1]);
43 
44   *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
45 }
46 
main(void)47 int main (void)
48 {
49   ffi_cif cif;
50   void *code;
51   ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
52   void* args_dbl[5];
53   ffi_type* cls_struct_fields[4];
54   ffi_type cls_struct_type;
55   ffi_type* dbl_arg_types[5];
56 
57   struct cls_struct_align g_dbl = { 12, (void *)4951, 127 };
58   struct cls_struct_align f_dbl = { 1, (void *)9320, 13 };
59   struct cls_struct_align res_dbl;
60 
61   cls_struct_type.size = 0;
62   cls_struct_type.alignment = 0;
63   cls_struct_type.type = FFI_TYPE_STRUCT;
64   cls_struct_type.elements = cls_struct_fields;
65 
66   cls_struct_fields[0] = &ffi_type_uchar;
67   cls_struct_fields[1] = &ffi_type_pointer;
68   cls_struct_fields[2] = &ffi_type_uchar;
69   cls_struct_fields[3] = NULL;
70 
71   dbl_arg_types[0] = &cls_struct_type;
72   dbl_arg_types[1] = &cls_struct_type;
73   dbl_arg_types[2] = NULL;
74 
75   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
76 		     dbl_arg_types) == FFI_OK);
77 
78   args_dbl[0] = &g_dbl;
79   args_dbl[1] = &f_dbl;
80   args_dbl[2] = NULL;
81 
82   ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_dbl, args_dbl);
83   /* { dg-output "12 4951 127 1 9320 13: 13 14271 140" } */
84   printf("res: %d %" PRIuPTR " %d\n", res_dbl.a, (uintptr_t)res_dbl.b, res_dbl.c);
85   /* { dg-output "\nres: 13 14271 140" } */
86 
87   CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
88 
89   res_dbl = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_dbl, f_dbl);
90   /* { dg-output "\n12 4951 127 1 9320 13: 13 14271 140" } */
91   printf("res: %d %" PRIuPTR " %d\n", res_dbl.a, (uintptr_t)res_dbl.b, res_dbl.c);
92   /* { dg-output "\nres: 13 14271 140" } */
93 
94   exit(0);
95 }
96