Illegal instruction using fxload

Hi there,

I compiled fxload (tried with fxload-2002_04_11 and fxload-2008_10_13) to
send a driver and startup my usb device. 

I was able to find the usb device
(http://www.friendlyarm.net/forum/topic/788?lang=en) but now the problem is
another: "illegal instruction".

[root@FriendlyARM usb]# fxload -vvv -t fx2 -I ./[mydriver].hex -D /dev/1-1 
  
microcontroller type: fx2
single stage:  load on-chip memory
open RAM hexfile image ./[mydriver].hex

stop CPU
** LINE: :0A1DE30000010202030304040505D9

** LINE: :1004D700C20DC20AC20CC20B43B58043B080E4F51B

Illegal instruction
[root@FriendlyARM usb]# 


I don't know what this error means... 
Any tip?

Thanks in advance.

Solved just by adding some flags on compilation:

-msoft-float -D__GCC_FLOAT_NOT_NEEDED -march=armv4 -mtune=arm920t


Hope it helps anybody with the same problem. But, still don't understanding
"illegal error"... :/

I someone have a reasonable explanation, please share with me!

:D

hi eduardo,

i've seen this comment you've wrote here in several topics, i really tried
to use it but i couldn't really find where to write it. i mean, in a basic
Qt program, i added these lines in makefile as follows;

CC            = arm-none-linux-gnueabi-gcc

CXX           = arm-none-linux-gnueabi-g++

DEFINES       = -DQT_NO_DEBUG -DQT_SCRIPT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB
-DQT_CORE_LIB -DQT_SHARED

CFLAGS        = -msoft-float -D__GCC_FLOAT_NOT_NEEDED -march=armv4
-mtune=arm920t -pipe -fno-exceptions -O0 -Wall -W -D_REENTRANT $(DEFINES)

CXXFLAGS      = -msoft-float -D__GCC_FLOAT_NOT_NEEDED -march=armv4
-mtune=arm920t -pipe -fno-exceptions -O0 -Wall -W -D_REENTRANT $(DEFINES)

INCPATH       = -I../../../mkspecs/qws/linux-arm-g++ -I.
-I../../../include/QtCore -I../../../include/QtNetwork
-I../../../include/QtGui -I../../../include/QtScript -I../../../include
-I.moc/release-shared-emb-arm

LINK          = arm-none-linux-gnueabi-g++

LFLAGS        = -msoft-float -D__GCC_FLOAT_NOT_NEEDED -march=armv4
-mtune=arm920t
-Wl,-rpath-link,/home/baris/qt-everywhere-opensource-src-4.6.2/lib
-fno-exceptions -Wl,-O1 -Wl,-rpath,/usr/local/Qt/lib
-Wl,-rpath,/usr/local/Qt/lib

LIBS          = $(SUBLIBS) 
-L/home/baris/qt-everywhere-opensource-src-4.6.2/lib -lQtScript
-L/home/baris/qt-everywhere-opensource-src-4.6.2/lib -lQtGui -lQtNetwork
-lQtCore -lpthread 

AR            = arm-none-linux-gnueabi-ar cqs

RANLIB        = arm-none-linux-gnueabi-ranlib

I added this command on C,CXX,L FLAGS but the problem `illegal instruction`
isn't solved. If someone can help about it, i'd really appreciate. Thanks.

Hi,


I also face same problem. i am really stuck here , Anybody have solution.


Note: application run successfully with Qtopia
      Same application faile with Qt(Execute Time ) here display 'illegal
instruction' Error

Here in both application i am using libusb library for arm

Both program compile successfully.

I have already done all step that all are mention above but still same
Error:

I do not know how to come out from this any body have solution.

Waiting for Solution.

run the tool "readelf -a <your binary>" and take a look if the compiler did
the right things for your ARMv4 based Mini2440.

Tag_CPU_name: "CORTEX-A8"
  Tag_CPU_arch: v7
  Tag_CPU_arch_profile: Application
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-1
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align8_needed: Yes
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP

How to change arch v7 to v4t ?

Show us your compile script.

i have send the my makefile 

Let me know solution

I see you have -march=armv4t -mtune=arm920t which is correct.

Did you modify g++.conf and qmake.conf as per
http://mini2440vietnam.blogspot.com/2011/04/upgrade-qt462-in-mini2440.html

I got this to work once or twice.  I found that after each attempt I had to
clean out some .cache files.  Sorry, can't ehlp further.

I gave up and switched to using the Pengutronix BSP.

Good luck!

To make it more clear:

cross toolchain = compiler + assembler + linker + *basic libraries*

If this toolchain is configured to generate CORTEX-A8 code by default, the
whole *tool*chain* is configured to do so. This includes the basic
libraries!

If you change the target architecture by using the '-march' command line
option you only reach the compiler/assembler/linker. But the basic
libraries the linker is using to link your own application are still for
the default CORTEX-A8! This must fail on the Mini2440.

Hi Juergen Beisert 

Let me Explain.

i have one application in that i am using zestcard header file and also
library and also libusb . it's written on Qt platform in c++. 

you can see my Makefile in previous post in that i also mention -lusb and
-lZestSC1

here i am using Zestcardfunction for Zestcard detect. 

If i do comment on Zestcardfunction after that do make then i got 'v4T'
arch.
but when i am using Zestcardfunction after that do make then i got 'v7'
arch.


i do not know where i do mistake .


Note : i also write same application in Qtopia in that i am
Zestcardfunction but here i got v4T arch.


Here In both Application i am using same toolchain. 



Let me know solution

i got solution ...


Thanks for reply

Your solution might help others!

hi
compile libusb for arm arch. again using same toolchain 

any my problem is solved..!!