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Date: Wed, 21 Sep 2005 15:19:00 -0000
To: "Will Newton" <will.newton@imgtec.com>
Cc: <cgen@sources.redhat.com>
Subject: Parsing mnemonic suffixes
In-Reply-To: <0D107966AF6D79418315B7C5549F4B5104E016@lemail1.le.imgtec.org>
References: <0D107966AF6D79418315B7C5549F4B5104E016@lemail1.le.imgtec.org>
X-SW-Source: 2005-q3/txt/msg00031.txt.bz2

Will Newton writes:
 > 
 > I'm having a little trouble with getting a cgen generated assembler to
 > parse multiple suffixes on a mnemonic. The instruction is specified like
 > this:
 > 
 > "add$sc$cond $reg,$reg,$reg"
 > 
 > The operand "sc" can have a value of "S" or "" depending on whether this
 > instruction sets condition flags.
 > The operand "cond" can have one of a number of values ("Z", "EQ", "NE",
 > "", etc.) depending on whether this instruction is conditional or not.
 > 
 > When either $sc or $cond is used in isolation (e.g. "ADDS", "ADDEQ") the
 > mnemonic is parsed correctly, when the two are used together (e.g.
 > "ADDSEQ") the parse fails. Is it possible to parse an instruction like
 > this with a cgen description?

I would expect this to work.  I'll look into it.