Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/cls_align_pointer.c Source File

Ruby 3.0.5p211 (2022-11-24 revision ba5cf0f7c52d4d35cc6a173c89eda98ceffa2dcf)

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
10typedef struct cls_struct_align {
11 unsigned char a;
12 void *b;
13 unsigned char c;
14} cls_struct_align;
15
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
34static void
35cls_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}
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
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
cls_struct_align
struct cls_struct_align cls_struct_align
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
main
int main(void)
Definition: cls_align_pointer.c:47
CHECK
#define CHECK(sub)
Definition: compile.c:429
ffitest.h
__UNUSED__
#define __UNUSED__
Definition: ffitest.h:23
PRIuPTR
#define PRIuPTR
Definition: ffitest.h:126
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
NULL
#define NULL
Definition: regenc.h:69
cls_struct_align
Definition: cls_align_double.c:12
cls_struct_align::b
void * b
Definition: cls_align_pointer.c:12
cls_struct_align::b
double b
Definition: cls_align_double.c:14
cls_struct_align::a
unsigned char a
Definition: cls_align_double.c:13
cls_struct_align::c
unsigned char c
Definition: cls_align_double.c:15
code
Definition: inftree9.h:24
uintptr_t
unsigned int uintptr_t
Definition: win32.h:106