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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: kbastian@mail.uni-paderborn.de, f4bug@amsat.org
Subject: [Qemu-devel] [PATCH v2 3/8] decodetree: Document the usefulness of argument sets
Date: Wed, 27 Feb 2019 21:24:27 -0800	[thread overview]
Message-ID: <20190228052432.32571-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190228052432.32571-1-richard.henderson@linaro.org>

Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 docs/devel/decodetree.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/devel/decodetree.rst b/docs/devel/decodetree.rst
index d9be30b2db..62cb7f687c 100644
--- a/docs/devel/decodetree.rst
+++ b/docs/devel/decodetree.rst
@@ -69,6 +69,13 @@ with each of the fields being one of the member arguments.
 If ``!extern`` is specified, the backing structure is assumed
 to have been already declared, typically via a second decoder.
 
+Argument sets are useful when one wants to define helper functions
+for the translator functions that can perform operations on a common
+set of arguments.  This can ensure, for instance, that the ``AND``
+pattern and the ``OR`` pattern put their operands into the same named
+structure, so that a common ``gen_logic_insn`` may be able to handle
+the operations common between the two.
+
 Argument set examples::
 
   &reg3       ra rb rc
-- 
2.17.2

  parent reply	other threads:[~2019-02-28  5:24 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-28  5:24 [Qemu-devel] [PATCH v2 0/8] decodetree enhancements Richard Henderson
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 1/8] MAINTAINERS: Add scripts/decodetree.py to the TCG section Richard Henderson
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 2/8] decodetree: Move documentation to docs/devel/decodetree.rst Richard Henderson
2019-02-28  8:01   ` Bastian Koppelmann
2019-02-28  5:24 ` Richard Henderson [this message]
2019-02-28  8:02   ` [Qemu-devel] [PATCH v2 3/8] decodetree: Document the usefulness of argument sets Bastian Koppelmann
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 4/8] decodetree: Ensure build_tree does not include values outside insnmask Richard Henderson
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 5/8] decodetree: Do not unconditionaly return from Pattern.output_code Richard Henderson
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 6/8] decodetree: Allow grouping of overlapping patterns Richard Henderson
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 7/8] test/decode: Add tests for PatternGroups Richard Henderson
2019-02-28  5:24 ` [Qemu-devel] [PATCH v2 8/8] decodetree: Add --static-decode option Richard Henderson
2019-02-28  5:40 ` [Qemu-devel] [PATCH 9/8] decodetree: Produce clean output for an empty input file Richard Henderson

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