Ruby  2.7.1p83(2020-03-31revisiona0c7c23c9cec0d0ffcba012279cd652d28ad5bf3)
cls_align_pointer.c
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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;
15 
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
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 
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 }
cls_struct_align::a
unsigned char a
Definition: cls_align_double.c:13
PRIuPTR
#define PRIuPTR
Definition: ffitest.h:134
cls_struct_align::b
double b
Definition: cls_align_double.c:14
cls_struct_align
struct cls_struct_align cls_struct_align
uintptr_t
unsigned int uintptr_t
Definition: win32.h:106
NULL
#define NULL
Definition: _sdbm.c:101
ffitest.h
__UNUSED__
#define __UNUSED__
Definition: ffitest.h:28
CHECK
#define CHECK(sub)
Definition: compile.c:448
cls_struct_align_fn
cls_struct_align cls_struct_align_fn(struct cls_struct_align a1, struct cls_struct_align a2)
Definition: cls_align_pointer.c:16
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
ffi_type_uchar
#define ffi_type_uchar
Definition: fiddle.h:55
ffi_prep_cif
ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:226
cls_struct_align
Definition: cls_align_double.c:12
main
int main(void)
Definition: cls_align_pointer.c:47
exit
void exit(int __status) __attribute__((__noreturn__))
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
cls_struct_align::b
void * b
Definition: cls_align_pointer.c:12
ffi_prep_closure_loc
ffi_status ffi_prep_closure_loc(ffi_closure *closure, ffi_cif *cif, void(*fun)(ffi_cif *, void *, void **, void *), void *user_data, void *codeloc)
Definition: ffi.c:928
cls_struct_align::c
unsigned char c
Definition: cls_align_double.c:15