Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/nested_struct3.c Source File

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

nested_struct3.c
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1/* Area: ffi_call, closure_call
2 Purpose: Check structure passing with different structure size.
3 Contains structs as parameter of the struct itself.
4 Sample taken from Alan Modras patch to src/prep_cif.c.
5 Limitations: none.
6 PR: none.
7 Originator: <andreast@gcc.gnu.org> 20030911 */
8
9/* { dg-do run } */
10#include "ffitest.h"
11
12typedef struct A {
13 unsigned long long a;
14 unsigned char b;
15} A;
16
17typedef struct B {
18 struct A x;
19 unsigned char y;
20} B;
21
22 B B_fn(struct A b0, struct B b1)
23{
24 struct B result;
25
26 result.x.a = b0.a + b1.x.a;
27 result.x.b = b0.b + b1.x.b + b1.y;
28 result.y = b0.b + b1.x.b;
29
30 printf("%d %d %d %d %d: %d %d %d\n", (int)b0.a, b0.b,
31 (int)b1.x.a, b1.x.b, b1.y,
32 (int)result.x.a, result.x.b, result.y);
33
34 return result;
35}
36
37static void
38B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
39 void* userdata __UNUSED__)
40{
41 struct A b0;
42 struct B b1;
43
44 b0 = *(struct A*)(args[0]);
45 b1 = *(struct B*)(args[1]);
46
47 *(B*)resp = B_fn(b0, b1);
48}
49
50 int main (void)
51{
52 ffi_cif cif;
53 void *code;
54 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
55 void* args_dbl[3];
56 ffi_type* cls_struct_fields[3];
57 ffi_type* cls_struct_fields1[3];
58 ffi_type cls_struct_type, cls_struct_type1;
59 ffi_type* dbl_arg_types[3];
60
61 struct A e_dbl = { 1LL, 7};
62 struct B f_dbl = {{12LL , 127}, 99};
63
64 struct B res_dbl;
65
66 cls_struct_type.size = 0;
67 cls_struct_type.alignment = 0;
68 cls_struct_type.type = FFI_TYPE_STRUCT;
69 cls_struct_type.elements = cls_struct_fields;
70
71 cls_struct_type1.size = 0;
72 cls_struct_type1.alignment = 0;
73 cls_struct_type1.type = FFI_TYPE_STRUCT;
74 cls_struct_type1.elements = cls_struct_fields1;
75
76 cls_struct_fields[0] = &ffi_type_uint64;
77 cls_struct_fields[1] = &ffi_type_uchar;
78 cls_struct_fields[2] = NULL;
79
80 cls_struct_fields1[0] = &cls_struct_type;
81 cls_struct_fields1[1] = &ffi_type_uchar;
82 cls_struct_fields1[2] = NULL;
83
84
85 dbl_arg_types[0] = &cls_struct_type;
86 dbl_arg_types[1] = &cls_struct_type1;
87 dbl_arg_types[2] = NULL;
88
89 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
90 dbl_arg_types) == FFI_OK);
91
92 args_dbl[0] = &e_dbl;
93 args_dbl[1] = &f_dbl;
94 args_dbl[2] = NULL;
95
96 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
97 /* { dg-output "1 7 12 127 99: 13 233 134" } */
98 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
99 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
100 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
101
102
103 CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
104
105 res_dbl = ((B(*)(A, B))(code))(e_dbl, f_dbl);
106 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */
107 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
108 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
109 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
110 exit(0);
111}
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
CHECK
#define CHECK(sub)
Definition: compile.c:429
ffitest.h
__UNUSED__
#define __UNUSED__
Definition: ffitest.h:23
B_fn
B B_fn(struct A b0, struct B b1)
Definition: nested_struct3.c:22
B
struct B B
main
int main(void)
Definition: nested_struct3.c:50
A
struct A A
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
A
Definition: nested_struct10.c:12
A::a
unsigned long long a
Definition: nested_struct10.c:13
A::b
unsigned char b
Definition: nested_struct10.c:14
B
Definition: nested_struct10.c:17
B::y
unsigned char y
Definition: nested_struct10.c:18
B::x
struct A x
Definition: nested_struct10.c:19
code
Definition: inftree9.h:24