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From: "Will Newton" <will.newton@imgtec.com>
To: <cgen@sources.redhat.com>
Subject: Parsing mnemonic suffixes
Date: Tue, 20 Sep 2005 14:10:00 -0000	[thread overview]
Message-ID: <0D107966AF6D79418315B7C5549F4B5104E016@lemail1.le.imgtec.org> (raw)


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?

Thanks,

             reply	other threads:[~2005-09-20 14:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-20 14:10 Will Newton [this message]
2005-09-21 15:19 ` Doug Evans
2005-09-21 16:10 Will Newton

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