Ruby 2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)

cls_3byte2.c
Go to the documentation of this file.
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. Check overlapping.
5 Limitations: none.
6 PR: none.
7 Originator: <andreast@gcc.gnu.org> 20030828 */
8
9 /* { dg-do run } */
10 #include "ffitest.h"
11
12 typedef struct cls_struct_3byte_1 {
13 unsigned char a;
14 unsigned short b;
15 } cls_struct_3byte_1;
16
17 cls_struct_3byte_1 cls_struct_3byte_fn1(struct cls_struct_3byte_1 a1,
18 struct cls_struct_3byte_1 a2)
19 {
20 struct cls_struct_3byte_1 result;
21
22 result.a = a1.a + a2.a;
23 result.b = a1.b + a2.b;
24
25 printf("%d %d %d %d: %d %d\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
26
27 return result;
28 }
29
30 static void
31 cls_struct_3byte_gn1(ffi_cif* cif __UNUSED__, void* resp, void** args,
32 void* userdata __UNUSED__)
33 {
34
35 struct cls_struct_3byte_1 a1, a2;
36
37 a1 = *(struct cls_struct_3byte_1*)(args[0]);
38 a2 = *(struct cls_struct_3byte_1*)(args[1]);
39
40 *(cls_struct_3byte_1*)resp = cls_struct_3byte_fn1(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[4];
50 ffi_type cls_struct_type;
51 ffi_type* dbl_arg_types[5];
52
53 struct cls_struct_3byte_1 g_dbl = { 15, 125 };
54 struct cls_struct_3byte_1 f_dbl = { 9, 19 };
55 struct cls_struct_3byte_1 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] = &ffi_type_ushort;
64 cls_struct_fields[2] = NULL;
65
66 dbl_arg_types[0] = &cls_struct_type;
67 dbl_arg_types[1] = &cls_struct_type;
68 dbl_arg_types[2] = NULL;
69
70 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
71 dbl_arg_types) == FFI_OK);
72
73 args_dbl[0] = &g_dbl;
74 args_dbl[1] = &f_dbl;
75 args_dbl[2] = NULL;
76
77 ffi_call(&cif, FFI_FN(cls_struct_3byte_fn1), &res_dbl, args_dbl);
78 /* { dg-output "15 125 9 19: 24 144" } */
79 printf("res: %d %d\n", res_dbl.a, res_dbl.b);
80 /* { dg-output "\nres: 24 144" } */
81
82 CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_3byte_gn1, NULL, code) == FFI_OK);
83
84 res_dbl = ((cls_struct_3byte_1(*)(cls_struct_3byte_1, cls_struct_3byte_1))(code))(g_dbl, f_dbl);
85 /* { dg-output "\n15 125 9 19: 24 144" } */
86 printf("res: %d %d\n", res_dbl.a, res_dbl.b);
87 /* { dg-output "\nres: 24 144" } */
88
89 exit(0);
90 }
cls_struct_3byte_1
Definition: cls_3byte2.c:12
main
int main(void)
Definition: cls_3byte2.c:43
cls_struct_3byte_1::a
unsigned char a
Definition: cls_3byte2.c:13
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
NULL
#define NULL
Definition: _sdbm.c:101
exit
void exit(int __status) __attribute__((__noreturn__))
ffitest.h
__UNUSED__
#define __UNUSED__
Definition: ffitest.h:28
CHECK
#define CHECK(sub)
Definition: compile.c:448
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
cls_struct_3byte_1::b
unsigned short b
Definition: cls_3byte2.c:14
cls_struct_3byte_fn1
cls_struct_3byte_1 cls_struct_3byte_fn1(struct cls_struct_3byte_1 a1, struct cls_struct_3byte_1 a2)
Definition: cls_3byte2.c:17
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_3byte_1
struct cls_struct_3byte_1 cls_struct_3byte_1
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
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