ccs5.1 build .asm file error!

si cheng

Expert 2685 points

Hi:

I new a simple c66x test project, a test.asm:

.global _test

_test:

mv a4, a5

b b3

nop 5

main.c:

extern void test();

void main()

{
test();

}

when I build the project, error is :

 undefined first referenced
  symbol       in file     
 --------- ----------------
 test      ./src/main.obj

But when i new a c64x+ project, the same with above project, build success.

i want to know if it is the bug of ccs5.1? thanks!

over 13 years ago

0 AartiG over 13 years ago

TI__Guru**** 173310 points

When creating a new project for C66x, the default build options choose the ABI to be EABI. To confirm, check under Proejct Properties->CCS General (Output Format). This is different than the default selected for C64x+ (which defaults to COFF ABI). One big difference between EABI and COFF ABI is that in EABI, the assembly symbol names do not have the underscore. So when building for EABI, you should modify your assembly code symbol from "_test" to "test".

More details are here: http://processors.wiki.ti.com/index.php/C6000_EABI_Migration#COFF_Underscore_Name_Mangling

Code Composer Studio™︎

Code Composer Studio forum

ccs5.1 build .asm file error!