TMS570LS and GCC compiler

Stelios Gan

Other Parts Discussed in Thread: HALCOGEN, TMS570LC4357, TMDX570LC43HDK, TMS570LS3137

Hello people,

I am trying to create a new project using the GCC compiler. I generate the code using HalCoGen and I select the Linaro compiler in Code Composer Studio. I use the flags that are necessary for my processor:

-mcpu=cortex-r4f -mtune=cortex-r4f -march=armv7-r -marm -mfloat-abi=softfp -mfpu=vfpv3-d16

and the flag -mbig-endian for big endianess. I get some linker errors like:

c:/ti/ccsv6/tools/compiler/gcc-arm-none-eabi-4_8-2014q3/bin/../lib/gcc/arm-none-eabi/4.8.4/../../../../arm-none-eabi/lib\libc.a(lib_a-__atexit.o): compiled for a little endian system and target is big endian Test C/C++ Problem.

Do you have any suggestions?

I attach my project. Thank you in advance. :-)
8713.Test.zip

over 10 years ago

0 Jiri Dobry over 10 years ago

Expert 1810 points

Default GCC multilib don't contain version for ARM big-endian.

You need apply this patch answers.launchpad.net/gcc-arm-embedded/+question/263922 to this GCC compiler version launchpad.net/gcc-arm-embedded

0 Stelios Gan over 10 years ago in reply to Jiri Dobry

Intellectual 450 points

Thank you Jiri,

I have read about it. How could I do it?Any tips? I am sorry, but I have not done something similar before. :-)

Regards,
Stelios

0 Jiri Dobry over 10 years ago in reply to Stelios Gan

Expert 1810 points

OK, I can provide GCC binaries for Win with patch big-endian multilibs.
https://mega.co.nz/#!rAREiaia!MsyiYMMvVLc3xjayp_8om4wiPnHfE2d8Wn6tg_OGzZI

It contain patch for big endian and this patch https://answers.launchpad.net/gcc-arm-embedded/+question/263872

0 Stelios Gan over 10 years ago in reply to Jiri Dobry

Intellectual 450 points

Hello Jiri,

It compiles and links successfully with your lib. You are my hero. :-) Tomorrow morning that I will have my hardware available, I will check if I can finally load the code.

Thanks and regards,
Stelios

0 jian li93 over 10 years ago in reply to Jiri Dobry

Prodigy 120 points

hi jiri,
after I download gcc-arm-none-eabi-4_9-2015q1p1-20150325-win32, should I use armv7-ar-bigE for tms570lc43 , or can you give a demo ccs6.1 example project to show how to set flags.

regards
li

0 Jiri Dobry over 10 years ago in reply to jian li93

Expert 1810 points

We don't use CSS. Just Gcc+make for better flexibility to autogenerate some C files.
We are using it with TMS570LC4357, but it is no demo project available yet.

0 jian li93 over 10 years ago in reply to Jiri Dobry

Prodigy 120 points

thank you. My target is also TMS570LC4357 on TMDX570LC43HDK board.

0 jian li93 over 10 years ago in reply to Jiri Dobry

Prodigy 120 points

hi jiri,
When I use gcc-arm-none-eabi-4_9-2015q1p1-20150325, I always link to /lib/gcc/arm-none-eabi/4.9.3\libgcc.a , not armv7-ar-bigE for TMS570lc43, Can you tell me what flags should I use to link to big endian libs.
thanks

0 Stelios Gan over 10 years ago in reply to jian li93

Intellectual 450 points

Hi Jian,

The flags that I used both for compiler and linker are the following:

-march=armv7-r -mfloat-abi=softfp -mfpu=vfpv3-d16 -mbig-endian

I hope it helps.

Regards,
Stelios

0 jian li93 over 10 years ago in reply to Stelios Gan

Prodigy 120 points

I use these flags and get error:

/ld.exe: unrecognised emulation mode: big-endian Supported emulations: armelf

Can you give me some suggestion?

Regards

jian

0 Sridhar Artham over 9 years ago in reply to Jiri Dobry

Intellectual 330 points

Hi,

I am unable to get the GCC binaries for Big Endian multi libraries.

Can you please share the new location for copying the binaries?

0 Jiri Dobry over 9 years ago in reply to Sridhar Artham

Expert 1810 points

Here is patch for latest sources (ARM GCC 5 2015q4)

http://pastebin.com/urVDhv4s

And here is same version, windows installe binariesr:

https://drive.google.com/file/d/0B_bE6R1gUuZGVFgtZWNLR3BpZTA/view?usp=sharing

0 Sridhar Artham over 9 years ago in reply to Jiri Dobry

Intellectual 330 points

After installing this, what modifications I should do for big endian support? Do I need to get any libraries for support of big endian on GCC?

0 Jiri Dobry over 9 years ago in reply to Sridhar Artham

Expert 1810 points

You don't need any modifications. Just set correct MCU profile.

For EX here is profile for TMS570LS3137:

-march=armv7-r -mbig-endian -mfloat-abi=hard -mfpu=vfpv3-d16

Arm-based microcontrollers

Arm-based microcontrollers forum

TMS570LS and GCC compiler

http://pastebin.com/urVDhv4s

https://drive.google.com/file/d/0B_bE6R1gUuZGVFgtZWNLR3BpZTA/view?usp=sharing