Re: [arm-gnu] Regarding Entry Point in Codesourcery Assembler code

[Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>]

On 8/31/2010 8:27 AM, Abhinav Varma wrote:
> Hey,
>
> How can we specify an entry point in an Assembler code file. The entry
> point is for the entire build. I do not wish to put the
> ENTRY(<LABEL_NAME>) in the linker script. Is there any alternative
> option in the assembler file itself?
>
> Thanks and Regards
> Abhinav Varma

The ENTRY point is an ELF concept and setting it requires coordination 
with the linker.

CodeSourcery's CS3 provides this coordination and on bare-metal ARM 
EABI tools you can provide your own version of __cs3_reset e.g.

        .text
        .align 2
        .global __cs3_reset
        .type   __cs3_reset, %function
__cs3_reset:
	...

This overrides the default reset provided by the CS3 libraries, and 
the application ENTRY point is automatically set to your __cs3_reset.

For ARM GNU/Linux tools, you should not modify the ENTRY point unless 
you have a really good reason.

I hope that answers your questions.

Cheers,
Carlos.
--
Carlos O'Donell
CodeSourcery
carlos@xxxxxxxxxxxxxxxx
(650) 331-3385 x716