1 /*-
2  * Copyright (c) 2023 Dmitry Chagin <dchagin@FreeBSD.org>
3  *
4  * SPDX-License-Identifier: BSD-2-Clause
5  */
6 
7 #include <sys/systm.h>
8 #include <vm/vm_param.h>
9 
10 #include <atf-c.h>
11 
12 extern int checkstack(void);
13 
14 static int jumpstack0(void) __noinline;
15 static int jumpstack1(void) __noinline;
16 
17 
18 static int
19 jumpstack0(void)
20 {
21 	char stack[SGROWSIZ];
22 
23 	explicit_bzero(stack, sizeof(stack));
24 	return (checkstack());
25 }
26 
27 static int
28 jumpstack1(void)
29 {
30 	char stack[SGROWSIZ * 2];
31 
32 	explicit_bzero(stack, sizeof(stack));
33 	return (checkstack());
34 }
35 
36 ATF_TC_WITHOUT_HEAD(dt_need_test);
37 ATF_TC_BODY(dt_need_test, tc)
38 {
39 
40 	ATF_REQUIRE(jumpstack0() == 0);
41 	ATF_REQUIRE(jumpstack1() == 0);
42 }
43 
44 ATF_TP_ADD_TCS(tp)
45 {
46 
47 	ATF_TP_ADD_TC(tp, dt_need_test);
48 
49 	return (atf_no_error());
50 }
51