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Re: ia64: @ not allowed to start symbol?
- From: James E Wilson <wilson at specifixinc dot com>
- To: Jan Beulich <JBeulich at novell dot com>
- Cc: binutils at sources dot redhat dot com
- Date: Mon, 31 Jan 2005 12:48:40 -0800
- Subject: Re: ia64: @ not allowed to start symbol?
- References: <s1fe6564.039@emea1-mh.id2.novell.com>
On Mon, 2005-01-31 at 09:06, Jan Beulich wrote:
> Is it intentional that one cannot have a symbol starting with @ in IA64
> assembly sources? While these may conflict with current or future pseudo
> operands, ias permits them.
An oversight. Gas probably hasn't ever been rigorously checked against
post-release Intel Assembly Language manuals.
I see the IAS manual allows any of the special characters "._$@?" to be
the first character of a symbol. "." and "_" are common in unix. "$"
appears in VMS and old K&R C code. The "@" and "?" have me puzzled
though. I don't know why anyone would want or need them as the first
character of an identifier, though I see that the netware,
interix, and PE targets allow one or both of them, so it must be a
Windows convention.
Gas gets both the @ and ? cases wrong, and should be fixed if we want to
conform to IAS, or if someone needs them. We get the other cases right.
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com