gnupic: Re: [gnupic] Relocatable code and EXTERN
Subject:
Re: [gnupic] Relocatable code and EXTERN
From:
Craig Franklin ####@####.####
Date:
1 Jan 2006 23:55:25 +0000
Message-Id: <43B86C4E.6040304@users.sourceforge.net>
John De Villiers wrote:
>Is it possible to declare and EQU as external ?
>
>
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No. Only addresses can have relocations. Not equates.
>I want to have the var EQU value defined in another file. It should then
>only get resolved at link time. Is this possible ?
>
>
Typically I have an include file that defines all the external symbols
in the library. Any constants are included in that file. Kind of like
a header file for a library.
>It seems not. Any ideas how to do it?
>
>
>
There are gpasm directives to manually add a symbol to the table. You
can use them to do anything you want, but you will likely break something.
>In the code that i have i want to add a literal to a value in a routine
>that will become part of a library. I dont want to have to change the
>library for every project, nor make copies of it all the time. The
>literal contains the amount of defined strings ( screen.asm in the lcd
>samples of gpsim - WS_TABLE_MASK)
>
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I am not familiar with the code. Can you use NULL terminated strings or
add the string length to the start of the strings?
>I presume im going to have to use an initialised variable for it ?
>
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