[ts-7000] Mmap Maps to the Wrong Address

["agreensplat" <>]

Hi,

I've searched through this list and can't seem to figure out what's
going on. 

All that my program does is try to get a start value Mmaped to
0x80840000. The idea is to build stuff on top of this once I get it
working.

I'm having the program print out the file descriptor and the memory
map address.

The output I get is 3 for the FD (which is expected) and mmap sends
the variable start to 2aac2000. If I specify MAP_FIXED, then I get a
zero back (so mmap failed).

Anyone have any thoughts as to what's going on? 

Thanks for your help!

Aaron

Here is my code: 

#include <stdio.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>

main()
{       
        unsigned int *PADR, *PADDR;
        unsigned char *start;
        int fd = open("/dev/mem", O_RDWR|O_SYNC);
        printf("FD: %d \n",fd);
        
        start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd,
0x80840000);
        printf("Start Address Map: %x \n", start);
        close(fd);
}
        
Output from the program:

$ ./a.out
FD: 3
Start Address Map: 2aac2000
$






 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/ts-7000/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/ts-7000/join
    (Yahoo! ID required)

<*> To change settings via email:
     
    

<*> To unsubscribe from this group, send an email to:
    

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/