gnupic: Trouble with macros conditionally generating code
Subject:
Re: Trouble with macros conditionally generating code
From:
Pete Elmore ####@####.####
Date:
19 Nov 2004 17:14:28 +0000
Message-Id: <419E2A29.2020206@petta-tech.com>
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Mark Rages wrote:
| How does gpasm compare to mpasm in this? See
| http://www.piclist.com/techref/microchip/pages.htm
This page only describes various memory-paging techniques; my issue was
(as the subject line says) that macros generating a variable number of
instructions mess up forward labels. (Paging was just what I was doing
with the macros.) This seems to be "working as designed", so, not
making an issue of the design, I think the relevant problem is that the
error message in this case is very cryptic. Had I not known that the
macro was the cause of the problem, it could have taken a very long time
to figure this out.
On a side note, the same error message occurs for this:
ex.s:
~ processor 16f877
bad_label:
~ nop
bad_label:
~ nop
~ end
EOF
$ gpasm ex.s
ex.s:4:Error [116] Value of symbol "bad_label" differs on second pass
~ pass 1=0, pass 2=1
Perhaps a 'label "bad_label" redefined' error that gives the user line
numbers for both definitions would be more appropriate?
Also, I'd like to thank everyone for the helpful responses!
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