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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*
* dhahelper test program
*
* Copyright (C) 2002 Alex Beregszsaszi
*
* This file is part of MPlayer.
*
* MPlayer 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 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <string.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include "dhahelper.h"
int main(int argc, char *argv[])
{
int fd;
int ret;
fd = open("/dev/dhahelper", O_RDWR);
ioctl(fd, DHAHELPER_GET_VERSION, &ret);
printf("api version: %d\n", ret);
if (ret != API_VERSION)
printf("incompatible api!\n");
{
dhahelper_memory_t mem;
mem.operation = MEMORY_OP_MAP;
//mem.start = 0xe0000000;
mem.start = 0xe4000008;
mem.offset = 0;
mem.size = 0x4000;
mem.ret = 0;
ret = ioctl(fd, DHAHELPER_MEMORY, &mem);
printf("ret: %s\n", strerror(errno));
mem.ret = (int)mmap(NULL, (size_t)mem.size, PROT_READ, MAP_SHARED, fd, (off_t)0);
printf("allocated to %x\n", mem.ret);
if (argc > 1)
if (mem.ret != 0)
{
int i;
for (i = 0; i < 256; i++)
printf("[%x] ", *(int *)(mem.ret+i));
printf("\n");
}
munmap((void *)mem.ret, mem.size);
mem.operation = MEMORY_OP_UNMAP;
mem.start = mem.ret;
ioctl(fd, DHAHELPER_MEMORY, &mem);
}
return 0;
}
|
