blob: 50236c2d275d0fe916d8beafbd735750746dc8c9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* This testcase is part of GDB, the GNU debugger.
Copyright 2021-2024 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include <stdio.h>
/* These will hold the addresses for two memory regions. */
void *region_1;
void *region_2;
/* Allocate a page of memory using mmap, and return a pointer. */
void *
allocate_page (void)
{
void *addr;
int pgsize = sysconf(_SC_PAGE_SIZE);
addr = mmap (NULL, pgsize, PROT_EXEC | PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (addr == MAP_FAILED)
perror ("mmap");
}
/* Only called so we can create a breakpoint. */
void
breakpt (void)
{
/* Nothing. */
}
/* The test. */
int
main (void)
{
region_1 = allocate_page ();
region_2 = allocate_page ();
breakpt (); /* Break Here. */
}
|
