[PATCH 20/46] s390: Add .insn pseudo-mnemonic rrd

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 capability to generate s390 instructions.
  • • Requires precise implementation of the RRD format encoding.

All attributes

project
binutils
subsystem
s390
patch_id
—
discussion_id
20261005153947.363053-68-jremus@linux.ibm.com
source_type
public_inbox
title
[PATCH 20/46] s390: Add .insn pseudo-mnemonic rrd
headline
s390: Add .insn pseudo-mnemonic rrd
tldr
Adds support for the RRD pseudo-mnemonic for s390 architecture.
proposer
Jens Remus <jremus@linux.ibm.com>
consensus
Proposed
outcome
proposed
sentiment_score
—
technical_tradeoffs
  • • Expands the assembler's capability to generate s390 instructions.
  • • Requires precise implementation of the RRD format encoding.
series_id
binutils:s390: add .insn pseudo-mnemonic rrd
series_role
reply
series_parts
[]
tags
  • • s390
  • • assembler
  • • pseudo-mnemonic
  • • instruction-format
bugzilla_url
—
date
2026-10-05T00:00:00.000Z

[PATCH 20/46] s390: Add .insn pseudo-mnemonic rrd

This patch introduces support for the RRD instruction format on the s390 architecture using the .insn pseudo-mnemonic. The RRD format was introduced with IBM z196 and is a separate format from RRF. The changes include updating opcode definitions, documenting the format, and adding corresponding test cases.