* File size increases significantly after objcopy
@ 2004-11-25 13:22 C Jaiprakash, Noida
2004-11-25 14:05 ` Andreas Schwab
2004-11-25 15:53 ` Peter Barada
0 siblings, 2 replies; 5+ messages in thread
From: C Jaiprakash, Noida @ 2004-11-25 13:22 UTC (permalink / raw)
To: binutils; +Cc: C Jaiprakash, Noida
Hi,
I am building colilo for a coldfire (v4e) target. I am facing a strange
problem. If i build colilo with -O0 option and convert the ELF binary to
bnary, srec format following are the resulting file sizes
-rwxr-xr-x 1 cjaiprakash coldfire 93K Nov 25 18:58 colilo.bin
-rwxr-xr-x 1 cjaiprakash coldfire 123K Nov 25 18:58 colilo.elf
-rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.s19
-rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.srec
But when i build the colilo with -O2 option file size increase
significantly, following are the sizes
-rwxr-xr-x 1 cjaiprakash coldfire 17M Nov 25 19:01 colilo.bin
-rwxr-xr-x 1 cjaiprakash coldfire 107K Nov 25 19:01 colilo.elf
-rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.s19
-rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.srec
ELF binary size is ok but why the file sizes for bin, srec are so huge?
Thanks and best regards,
C Jaiprakash
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contributing to the World by creating indispensable value !
System Software CoE @ HCLT-Noida
http://www.hcltechnologies.com
Ph. : +91-120-2510701/702 Ext : 3170
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: File size increases significantly after objcopy
2004-11-25 13:22 File size increases significantly after objcopy C Jaiprakash, Noida
@ 2004-11-25 14:05 ` Andreas Schwab
2004-11-25 15:53 ` Peter Barada
1 sibling, 0 replies; 5+ messages in thread
From: Andreas Schwab @ 2004-11-25 14:05 UTC (permalink / raw)
To: C Jaiprakash, Noida; +Cc: binutils
"C Jaiprakash, Noida" <cjaiprakash@hcltech.com> writes:
> Hi,
> I am building colilo for a coldfire (v4e) target. I am facing a strange
> problem. If i build colilo with -O0 option and convert the ELF binary to
> bnary, srec format following are the resulting file sizes
>
> -rwxr-xr-x 1 cjaiprakash coldfire 93K Nov 25 18:58 colilo.bin
> -rwxr-xr-x 1 cjaiprakash coldfire 123K Nov 25 18:58 colilo.elf
> -rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.s19
> -rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.srec
>
> But when i build the colilo with -O2 option file size increase
> significantly, following are the sizes
> -rwxr-xr-x 1 cjaiprakash coldfire 17M Nov 25 19:01 colilo.bin
> -rwxr-xr-x 1 cjaiprakash coldfire 107K Nov 25 19:01 colilo.elf
> -rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.s19
> -rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.srec
>
> ELF binary size is ok but why the file sizes for bin, srec are so huge?
Look at the program headers, any holes? Without any information to
reproduce it's hard to investigate.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: File size increases significantly after objcopy
2004-11-25 13:22 File size increases significantly after objcopy C Jaiprakash, Noida
2004-11-25 14:05 ` Andreas Schwab
@ 2004-11-25 15:53 ` Peter Barada
2004-11-25 15:56 ` Peter Barada
1 sibling, 1 reply; 5+ messages in thread
From: Peter Barada @ 2004-11-25 15:53 UTC (permalink / raw)
To: cjaiprakash; +Cc: binutils, cjaiprakash
> I am building colilo for a coldfire (v4e) target. I am facing a strange
>problem. If i build colilo with -O0 option and convert the ELF binary to
>bnary, srec format following are the resulting file sizes
>
>-rwxr-xr-x 1 cjaiprakash coldfire 93K Nov 25 18:58 colilo.bin
>-rwxr-xr-x 1 cjaiprakash coldfire 123K Nov 25 18:58 colilo.elf
>-rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.s19
>-rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.srec
>
>But when i build the colilo with -O2 option file size increase
>significantly, following are the sizes
>-rwxr-xr-x 1 cjaiprakash coldfire 17M Nov 25 19:01 colilo.bin
>-rwxr-xr-x 1 cjaiprakash coldfire 107K Nov 25 19:01 colilo.elf
>-rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.s19
>-rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.srec
>
>ELF binary size is ok but why the file sizes for bin, srec are so huge?
Two things.
1) Build link map so you can see what got sucked into the link.
2) Dump the object header (onjdump -h) and see what sections are in
colilo.elf. I'll bet in the -O2 case there are one or more *extra*
sections that are getting linked to zero since the linker control file
didn't specify where they are suppoesed to go.
--
Peter Barada
peter@the-baradas.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: File size increases significantly after objcopy
2004-11-25 15:53 ` Peter Barada
@ 2004-11-25 15:56 ` Peter Barada
0 siblings, 0 replies; 5+ messages in thread
From: Peter Barada @ 2004-11-25 15:56 UTC (permalink / raw)
To: peter; +Cc: cjaiprakash, binutils, cjaiprakash
>1) Build link map so you can see what got sucked into the link.
>2) Dump the object header (onjdump -h) and see what sections are in
I really should drink more caffeine in the morning before I type. :)
The above should read:
1) Build a link map so you can see what got sucked into the link.
2) Dump the object header (objdump -h) and see what sections are in
--
Peter Barada
peter@the-baradas.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* RE: File size increases significantly after objcopy
@ 2004-11-25 13:23 C Jaiprakash, Noida
0 siblings, 0 replies; 5+ messages in thread
From: C Jaiprakash, Noida @ 2004-11-25 13:23 UTC (permalink / raw)
To: 'binutils@sources.redhat.com'
I am using binutils version 2.15.91
Thanks and best regards,
C Jaiprakash
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contributing to the World by creating indispensable value !
System Software CoE @ HCLT-Noida
http://www.hcltechnologies.com
Ph. : +91-120-2510701/702 Ext : 3170
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> -----Original Message-----
> From: C Jaiprakash, Noida
> Sent: Thursday, November 25, 2004 6:50 PM
> To: binutils@sources.redhat.com
> Cc: C Jaiprakash, Noida
> Subject: File size increases significantly after objcopy
>
> Hi,
> I am building colilo for a coldfire (v4e) target. I am
> facing a strange problem. If i build colilo with -O0 option
> and convert the ELF binary to bnary, srec format following
> are the resulting file sizes
>
> -rwxr-xr-x 1 cjaiprakash coldfire 93K Nov 25 18:58 colilo.bin
> -rwxr-xr-x 1 cjaiprakash coldfire 123K Nov 25 18:58 colilo.elf
> -rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.s19
> -rw-r--r-- 1 cjaiprakash coldfire 279K Nov 25 18:58 colilo.srec
>
> But when i build the colilo with -O2 option file size
> increase significantly, following are the sizes
> -rwxr-xr-x 1 cjaiprakash coldfire 17M Nov 25 19:01 colilo.bin
> -rwxr-xr-x 1 cjaiprakash coldfire 107K Nov 25 19:01 colilo.elf
> -rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.s19
> -rw-r--r-- 1 cjaiprakash coldfire 49M Nov 25 19:01 colilo.srec
>
> ELF binary size is ok but why the file sizes for bin, srec
> are so huge?
>
> Thanks and best regards,
> C Jaiprakash
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Contributing to the World by creating indispensable value !
>
> System Software CoE @ HCLT-Noida
> http://www.hcltechnologies.com
> Ph. : +91-120-2510701/702 Ext : 3170
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
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2004-11-25 13:22 File size increases significantly after objcopy C Jaiprakash, Noida
2004-11-25 14:05 ` Andreas Schwab
2004-11-25 15:53 ` Peter Barada
2004-11-25 15:56 ` Peter Barada
2004-11-25 13:23 C Jaiprakash, Noida
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