#define RTCSCFG_ENABLE_ICMP 0 //still has ICMP

[CarlFST60L]

Hi,

I have an application that I have ported from MQX3.7 to MQX4.0 and the project with no change grew 25KB and overflowed my flash allocation. Basically the project is:

Codewarrior 4

MQX4

52259demo

Win7

First thing I did was looked at my map and realised ICMP functions, although disabled, are there, is this normal?

In my user_config I have

#define RTCSCFG_ENABLE_ICMP      0

#define RTCSCFG_ENABLE_ICMP_STATS 0

Then I rebuild PSP, BSP, RTCS and I get the following lines taking up a huge amount of code space:

3003FF5C 0000006C .text   ICMP_init

(rtcs.a icmp_c.o       )

3003FFC8 00000776 .text   ICMP_service

(rtcs.a icmp_c.o       )

3004073E 0000059A .text   ICMP_send_error_internal	(rtcs.a icmp_c.o       )
30040CD8 00000048 .text   ICMP_send_error	(rtcs.a icmp_c.o       )

Not sure why my program grew 25KB with a simple MQX3.7 to MQX4.0 port? I know I did turn off register coloring because MQX4.0 has stack optimisation issues for release versions.

Anyone know of what else is causing my 25KB overhead?

[Martin_]

Check the paths to the include headers and libraries you compile and link your application with. It is not normal with the ICMP. I quickly did the test below with MQX 4.0.1 and CW 10.4 and twrmcf52259:

rtcs shell application

default user_config.h (ICMP is enabled):

CW 10.4 Debug:

  00000000 00000000 00000400 .vectors   vectorrom

  00000400 00000400 00000018 .cfmprotect cfmprotrom

  00000420 00000420 0005F508 .main_application rom

  20000000 0005F928 000001C0 .main_application_data ram

  200001C0 200001C0 00000468 .main_application_bss ram

modified user_config.h (ICMP disabled):

CW 10.4 Debug:

  00000000 00000000 00000400 .vectors   vectorrom

  00000400 00000400 00000018 .cfmprotect cfmprotrom

  00000420 00000420 000599A4 .main_application rom

  20000000 00059DC4 00000188 .main_application_data ram

  20000188 20000188 00000464 .main_application_bss ram

seems about 20 KB less by not including the ICMP.