Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/problem1.c Source File

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

problem1.c
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1/* Area: ffi_call, closure_call
2 Purpose: Check structure passing with different structure size.
3 Limitations: none.
4 PR: none.
5 Originator: <andreast@gcc.gnu.org> 20030828 */
6
7/* { dg-do run } */
8#include "ffitest.h"
9
10 typedef struct my_ffi_struct {
11 double a;
12 double b;
13 double c;
14} my_ffi_struct;
15
16 my_ffi_struct callee(struct my_ffi_struct a1, struct my_ffi_struct a2)
17{
18 struct my_ffi_struct result;
19 result.a = a1.a + a2.a;
20 result.b = a1.b + a2.b;
21 result.c = a1.c + a2.c;
22
23
24 printf("%g %g %g %g %g %g: %g %g %g\n", a1.a, a1.b, a1.c,
25 a2.a, a2.b, a2.c, result.a, result.b, result.c);
26
27 return result;
28}
29
30 void stub(ffi_cif* cif __UNUSED__, void* resp, void** args,
31 void* userdata __UNUSED__)
32{
33 struct my_ffi_struct a1;
34 struct my_ffi_struct a2;
35
36 a1 = *(struct my_ffi_struct*)(args[0]);
37 a2 = *(struct my_ffi_struct*)(args[1]);
38
39 *(my_ffi_struct *)resp = callee(a1, a2);
40}
41
42
43 int main(void)
44{
45 ffi_type* my_ffi_struct_fields[4];
46 ffi_type my_ffi_struct_type;
47 ffi_cif cif;
48 void *code;
49 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
50 void* args[4];
51 ffi_type* arg_types[3];
52
53 struct my_ffi_struct g = { 1.0, 2.0, 3.0 };
54 struct my_ffi_struct f = { 1.0, 2.0, 3.0 };
55 struct my_ffi_struct res;
56
57 my_ffi_struct_type.size = 0;
58 my_ffi_struct_type.alignment = 0;
59 my_ffi_struct_type.type = FFI_TYPE_STRUCT;
60 my_ffi_struct_type.elements = my_ffi_struct_fields;
61
62 my_ffi_struct_fields[0] = &ffi_type_double;
63 my_ffi_struct_fields[1] = &ffi_type_double;
64 my_ffi_struct_fields[2] = &ffi_type_double;
65 my_ffi_struct_fields[3] = NULL;
66
67 arg_types[0] = &my_ffi_struct_type;
68 arg_types[1] = &my_ffi_struct_type;
69 arg_types[2] = NULL;
70
71 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &my_ffi_struct_type,
72 arg_types) == FFI_OK);
73
74 args[0] = &g;
75 args[1] = &f;
76 args[2] = NULL;
77 ffi_call(&cif, FFI_FN(callee), &res, args);
78 /* { dg-output "1 2 3 1 2 3: 2 4 6" } */
79 printf("res: %g %g %g\n", res.a, res.b, res.c);
80 /* { dg-output "\nres: 2 4 6" } */
81
82 CHECK(ffi_prep_closure_loc(pcl, &cif, stub, NULL, code) == FFI_OK);
83
84 res = ((my_ffi_struct(*)(struct my_ffi_struct, struct my_ffi_struct))(code))(g, f);
85 /* { dg-output "\n1 2 3 1 2 3: 2 4 6" } */
86 printf("res: %g %g %g\n", res.a, res.b, res.c);
87 /* { dg-output "\nres: 2 4 6" } */
88
89 exit(0);;
90}
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
g
struct @77 g
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
callee
my_ffi_struct callee(struct my_ffi_struct a1, struct my_ffi_struct a2)
Definition: problem1.c:16
main
int main(void)
Definition: problem1.c:43
stub
void stub(ffi_cif *cif __UNUSED__, void *resp, void **args, void *userdata __UNUSED__)
Definition: problem1.c:30
NULL
#define NULL
Definition: regenc.h:69
f
#define f
code
Definition: inftree9.h:24
my_ffi_struct
Definition: problem1.c:10
my_ffi_struct::a
double a
Definition: problem1.c:11
my_ffi_struct::b
double b
Definition: problem1.c:12
my_ffi_struct::c
double c
Definition: problem1.c:13