[linuxsh-dev] new kernel, new-old problems

[Studencki P. <Paw...@er...>]

Hello everybody,


I really don't, how it's possible, that I'm still getting the same errors as
with older kernels and libs...I thougth, I know these tricks and problem
reasons...that's naturally not true :)

Short description:
software: kernel-2.4.0-test11, glibc-2.2.2
hardware: SH0079, SH3, debug with SCI

I created this devices in folder /dev

drwxr-xr-x   2 root     root         1024 Feb 23 17:42 .
drwxr-xr-x  10 root     root         1024 Feb 22 11:57 ..
lrwxrwxrwx   1 root     root            6 Feb 23 17:42 console -> ttySC0
crwxrwxrwx   1 root     root       1,   2 Feb 22 13:51 kmem
crwxrwxrwx   1 root     root     255, 255 Feb 22 13:51 log
crwxrwxrwx   1 root     root       1,   1 Feb 22 13:51 mem
crwxrwxrwx   1 root     root       1,   3 Feb 22 13:51 null
lrwxrwxrwx   1 root     root            4 Feb 22 13:52 ram -> ram0
brwxrwxrwx   1 root     root       1,   0 Feb 22 13:50 ram0
crwxrwxrwx   1 root     root       5,   0 Feb 22 14:49 tty
crwxrwxrwx   1 root     root     204,   8 Feb 22 13:56 ttySC0
----------------------------------------------------------------------------

as INIT program I'm starting:

----------------------------------------------------------------------------
-----

#include<stdio.h>
#include<sys/types.h>
#include<fcntl.h>
int main (void)
{
int i,fd;

        for(fd=0;;fd++)
        {

        printf("hello %d \n",fd);

        }
fflush(NULL);

return 1;
}
----------------------------------------------------------------------------

so I get following boot messages on my terminal:

----------------------------------------------------------------------------
-

Linux version 2.4.0-test11 (root@capella) (gcc version 2.97 20001120
(experiment
al)) #190 Fri Feb 23 17:44:50 MET 2001
On node 0 totalpages: 4096
zone(0): 4096 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: console=ttySC0,38400
SH RTC: invalid value, resetting to 1 Jan 2000
CPU clock: 75.17MHz
Bus clock: 25.05MHz
Module clock: 25.05MHz
Interval = 62650
Memory: 14216k/16384k available (648k kernel code, 2168k reserved, 24k data,
28k
 init)
Dentry-cache hash table entries: 2048 (order: 2, 16384 bytes)
Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 1024 (order: 1, 8192 bytes)
CPU: SH7707/SH7708/SH7709
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Starting kswapd v1.8
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 1024 blocks [1 disk] into ram disk... done.
Freeing initrd memory: 1024k freed
SuperH SCI(F) driver initialized
ttySC0 at 0xfffffe80 is a SCI
ttySC1 at 0xa4000150 is a SCIF
ttySC2 at 0xa4000140 is a SCIF
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 1024)
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 28k freed
sci open
set real termios
baud - 38400
sci open
baud - 38400
*** Before INIT ***
Hello world
Hello world 2
hello 0
hello 1
hello 2
hello 3
hello 4
hello 5
[...]
hello 17
hello 18
hello 19
hello 20
hello 21
hello 22
hello 23
hello 24

----------------------------------------------------------------------

as you can see, my program stops at "hello 24" . I don't know why :) That's
perhaps stupid, but I'm tring last days to get the reason of this
behaviour...
Serial console transmits only a certain number of chars or console works
properly only certain period???

with older kernels I had the same problem,nearly the same...Once, my program
was to short (5 steps in "for" loop), so it has been "killed", before he
could send all strings to console.
But this time, the loop is endless!
could this a problem with glibc-2.2.2? my next step will be change the Glibc
to older one...
but perhaps could you advice me something??

have a nice weekend
Pawel