Compiler: PRU Compiler 2.2.1: Unable to fix entry-point warning.

Is your system all hand-coded assembly?  I suspect it is, and that has something to do with it.  Please show exactly how the linker is invoked, and all the resulting diagnostics.  

Thanks and regards,

-George

--entry_point is a linker option. From the looks of the warning, you are passing this option to the compiler, not to the linker that is expecting it.

Yes, my code is all assembly. I am using the below method in my Makefile.

TOOLCHAIN_PATH_CLPRU ?= $(HOME)/ti-cgt-pru_2.2.1/
ASFLAGS ?= --silicon_version=4 -al

(TOOLCHAIN_PATH_CLPRU)/bin/clpru $(ASFLAGS) --display_error_number --code_address_listing_unit=word -I $(TOOLCHAIN_PATH_CLPRU)/include ../src/main_src.asm -fr obj/ -z ../pru_icss.cmd --disable_auto_rts -o obj/main_src.out -m obj/main_src.map

Above generates the following warnings (as I mentioned earlier):

warning: entry-point symbol "_c_int00" undefined
warning: no suitable entry-point found; setting to 0

Subsequently I am using the hexpru utility and xxd to generate a c based header file with static array containing entire PRU instructions.

(TOOLCHAIN_PATH_CLPRU)/bin/hexpru ../pru_icss.hexcfg obj/main_src.out

xxd -i main_src.b00 main_src_bin.h

Above two statements work fine. I then tried to specify an entry point as below:

(TOOLCHAIN_PATH_CLPRU)/bin/clpru $(ASFLAGS) --entry_point=main --display_error_number --code_address_listing_unit=word -I $(TOOLCHAIN_PATH_CLPRU)/include ../src/main_src.asm -fr obj/ -z ../pru_icss.cmd --disable_auto_rts -o obj/main_src.out -m obj/main_src.map

"main" is a label in my assembly source. I see the following additional warning:

WARNING: invalid compiler option --entry_point=main (ignored)

Regards,
Anjandeep

Thanks, this fixed the issue. But after this I see the following warning:

warning: entry-point symbol other than "_c_int00" specified: "main"

I suppose this is just for information. Do I need to suppress it or is there a fix for this also?

Regards,
Anjandeep

Lines from a Makefile can obscure important details.  It is best to see everything exactly as the tools see it.  Please conduct a problem build, then copy-n-paste from that exactly how clpru is invoked for the last command, where everything is linked together.  If your makefile does not echo the commands it executes, then use the option -n, or --dry-run, or something similar, to force the commands to be echoed.

Thanks and regards,

-George

Please show how clpru is invoked to link everything together, as detailed in the previous post.

Thanks and regards,

-George

Hi George,

The issue is already resolved. As mentioned by Archaeologist, I was passing the entry-point parameter to the compiler instead of linker. Hence compiler was throwing a warning since it does not recognize that parameter.

Regards,
Anjandeep