If you do get something that produces a good-looking report of code
size, I'd love for you to forward it to me for the Wiki.
Jared
-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of
Erik Ekman
Sent: Friday, November 23, 2007 10:45
To: Mailing list for lwIP users
Cc: lwip-devel
Subject: Re: [lwip-users] "automatic" code size analisys/comparison
tools
On 11/23/07, address@hidden <address@hidden> wrote:
I know this is kind of off-topic, but maybe I get some good answers
here...
I try to visualize the code size of lwIP (e.g. to see if 1.3.0 made it
better or worse). Until now, I have took a loop at the map files and
used a calculator for small regions but that does not really work nice
if I want to compare the whole stack + different options on PC and
ARM.
What I'm looking for is a tool that can read map files (GCC/elf and
win32/PE) and generate a report out of that, ideally including a
graphic
representation. Since I can't be the first person trying to do this,
there must exist some utilities for that. Only google didn't want to
show me any...
I'd be so happy if anyone could point me somewhere...
Thanks,
Simon
I had the same problem, and threw together a sed/python-script that
parses the entire code base for function definitions, and scans the
ELF disassembly for function sizes. Output is as follows: [view with
monospace font]
/lwip : 62841
/lwip/src : 62841
/lwip/src/basic_signal.c : 1074
/lwip/src/basic_signal.c#signal_connected : 173
/lwip/src/basic_signal.c#signal_err : 126
/lwip/src/basic_signal.c#signal_send : 545
/lwip/src/basic_signal.c#signal_sent : 230
/lwip/src/core : 52245
/lwip/src/core/dhcp.c : 12364
/lwip/src/core/dhcp.c#dhcp_arp_reply : 336
/lwip/src/core/dhcp.c#dhcp_bind : 848
/lwip/src/core/dhcp.c#dhcp_check : 214
/lwip/src/core/dhcp.c#dhcp_coarse_tmr : 170
/lwip/src/core/dhcp.c#dhcp_create_request : 684
/lwip/src/core/dhcp.c#dhcp_decline : 482
/lwip/src/core/dhcp.c#dhcp_delete_request : 167
/lwip/src/core/dhcp.c#dhcp_discover : 686
/lwip/src/core/dhcp.c#dhcp_fine_tmr : 136
/lwip/src/core/dhcp.c#dhcp_free_reply : 109
and so on.. Sizes are summed going up in the tree. This is an
unoptimized 386 Linux build shown here. A problem is that the
low_level_input function is found in multiple files, and all of these
add to the total sum.
The sed script doesnt find the multi-line functions in lwip, so I have
hard-coded them to get the sum right.
I could post the scripts here if you like.
/Erik
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