[PATCH 03/46] s390: Correct documentation of instruction formats

Project / Subsystem

binutils / s390

Date

2026-10-05

Proposer

Jens Remus <jremus@linux.ibm.com>

Source type

public_inbox

Consensus

Proposed

Sentiment

—/10

All attributes

project
binutils
subsystem
s390
patch_id
—
discussion_id
20261005153947.363053-51-jremus@linux.ibm.com
source_type
public_inbox
title
[PATCH 03/46] s390: Correct documentation of instruction formats
headline
s390: Correct documentation of instruction formats
tldr
Corrects the documentation for s390 RIS and RSI instruction formats, adjusting bit positions and instruction lengths.
proposer
Jens Remus <jremus@linux.ibm.com>
consensus
Proposed
outcome
proposed
sentiment_score
—
technical_tradeoffs
[]
series_id
binutils:s390: correct documentation of instruction formats
series_role
reply
series_parts
[]
tags
  • • s390
  • • gas
  • • documentation
  • • instruction-formats
bugzilla_url
—
date
2026-10-05T00:00:00.000Z

[PATCH 03/46] s390: Correct documentation of instruction formats

This patch corrects inaccuracies in the GNU Assembler’s documentation for the s390 architecture’s RIS and RSI instruction formats. Specifically, it adjusts the bit position of the second opcode field in the RIS format to bits 40-47 and corrects the instruction length of the RSI format to 4 bytes, ensuring documentation aligns with the IBM z/Architecture Principles of Operation.