Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/cls_1_1byte.c Source File

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

cls_1_1byte.c
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1/* Area: ffi_call, closure_call
2 Purpose: Check structure passing with different structure size.
3 Especially with small structures which may fit in one
4 register. Depending on the ABI.
5 Limitations: none.
6 PR: none.
7 Originator: <andreast@gcc.gnu.org> 20030902 */
8
9
10
11/* { dg-do run } */
12#include "ffitest.h"
13
14 typedef struct cls_struct_1_1byte {
15 unsigned char a;
16} cls_struct_1_1byte;
17
18 cls_struct_1_1byte cls_struct_1_1byte_fn(struct cls_struct_1_1byte a1,
19 struct cls_struct_1_1byte a2)
20{
21 struct cls_struct_1_1byte result;
22
23 result.a = a1.a + a2.a;
24
25 printf("%d %d: %d\n", a1.a, a2.a, result.a);
26
27 return result;
28}
29
30static void
31cls_struct_1_1byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
32 void* userdata __UNUSED__)
33{
34
35 struct cls_struct_1_1byte a1, a2;
36
37 a1 = *(struct cls_struct_1_1byte*)(args[0]);
38 a2 = *(struct cls_struct_1_1byte*)(args[1]);
39
40 *(cls_struct_1_1byte*)resp = cls_struct_1_1byte_fn(a1, a2);
41}
42
43 int main (void)
44{
45 ffi_cif cif;
46 void *code;
47 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
48 void* args_dbl[5];
49 ffi_type* cls_struct_fields[2];
50 ffi_type cls_struct_type;
51 ffi_type* dbl_arg_types[5];
52
53 struct cls_struct_1_1byte g_dbl = { 12 };
54 struct cls_struct_1_1byte f_dbl = { 178 };
55 struct cls_struct_1_1byte res_dbl;
56
57 cls_struct_type.size = 0;
58 cls_struct_type.alignment = 0;
59 cls_struct_type.type = FFI_TYPE_STRUCT;
60 cls_struct_type.elements = cls_struct_fields;
61
62 cls_struct_fields[0] = &ffi_type_uchar;
63 cls_struct_fields[1] = NULL;
64
65 dbl_arg_types[0] = &cls_struct_type;
66 dbl_arg_types[1] = &cls_struct_type;
67 dbl_arg_types[2] = NULL;
68
69 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
70 dbl_arg_types) == FFI_OK);
71
72 args_dbl[0] = &g_dbl;
73 args_dbl[1] = &f_dbl;
74 args_dbl[2] = NULL;
75
76 ffi_call(&cif, FFI_FN(cls_struct_1_1byte_fn), &res_dbl, args_dbl);
77 /* { dg-output "12 178: 190" } */
78 printf("res: %d\n", res_dbl.a);
79 /* { dg-output "\nres: 190" } */
80
81 CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_1_1byte_gn, NULL, code) == FFI_OK);
82
83 res_dbl = ((cls_struct_1_1byte(*)(cls_struct_1_1byte, cls_struct_1_1byte))(code))(g_dbl, f_dbl);
84 /* { dg-output "\n12 178: 190" } */
85 printf("res: %d\n", res_dbl.a);
86 /* { dg-output "\nres: 190" } */
87
88 exit(0);
89}
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
main
int main(void)
Definition: cls_1_1byte.c:43
cls_struct_1_1byte_fn
cls_struct_1_1byte cls_struct_1_1byte_fn(struct cls_struct_1_1byte a1, struct cls_struct_1_1byte a2)
Definition: cls_1_1byte.c:18
CHECK
#define CHECK(sub)
Definition: compile.c:429
ffitest.h
__UNUSED__
#define __UNUSED__
Definition: ffitest.h:23
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_1_1byte
Definition: cls_1_1byte.c:14
cls_struct_1_1byte::a
unsigned char a
Definition: cls_1_1byte.c:15
code
Definition: inftree9.h:24