[PATCH 28/46] s390: Add .insn pseudo-mnemonics rsy_a/b

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Project / Subsystem

binutils / s390

Date

2026-10-05

Proposer

Jens Remus <jremus@linux.ibm.com>

Source type

public_inbox

Consensus

Proposed

Sentiment

—/10

Technical tradeoffs

• Expands the assembler's instruction set coverage for s390.
• Requires careful implementation to match the precise encoding of RSY-a and RSY-b.

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All attributes

project: binutils
subsystem: s390
patch_id: —
discussion_id: 20261005153947.363053-76-jremus@linux.ibm.com
source_type: public_inbox
title: [PATCH 28/46] s390: Add .insn pseudo-mnemonics rsy_a/b
headline: s390: Add .insn pseudo-mnemonics rsy_a/b
tldr: Adds support for RSY-a and RSY-b pseudo-mnemonics for s390 architecture.
proposer: Jens Remus <jremus@linux.ibm.com>
consensus: Proposed
outcome: proposed
sentiment_score: —
technical_tradeoffs: • Expands the assembler's instruction set coverage for s390.
• Requires careful implementation to match the precise encoding of RSY-a and RSY-b.
series_id: binutils:s390: add .insn pseudo-mnemonics rsy_a/b
series_role: reply
series_parts: []
tags: • s390
• assembler
• pseudo-mnemonic
• instruction-format
url: https://inbox.sourceware.org/binutils/20261005153947.363053-76-jremus@linux.ibm.com
bugzilla_url: —
date: 2026-10-05T00:00:00.000Z

[PATCH 28/46] s390: Add .insn pseudo-mnemonics rsy_a/b

This patch introduces support for the RSY-a and RSY-b instruction formats on the s390 architecture using the .insn pseudo-mnemonic. The RSY instruction format was added with IBM z990. The changes involve defining the instruction format in opcodes/s390-opc.c, documenting it in gas/doc/c-s390.texi, and adding test cases in gas/testsuite/gas/s390/.