Landing: 6d5614ff7aab
Project / Subsystem
binutils / s390
Date
2026-10-02
Author
Jens Remus <jremus@sourceware.org>
Commit
6d5614ff7aab5451963932d6f4345179a8a4452d
Source
public_inbox
Perf win
No
Breaking
No
All attributes
- project
- binutils
- subsystem
- s390
- patch_id
- —
- commit_hash
- 6d5614ff7aab5451963932d6f4345179a8a4452d
- source_type
- public_inbox
- headline
- s390: Rename instruction format RRF_F0FF to RRD_F0FF
- tldr
- s390 instruction format RRF_F0FF is renamed to RRD_F0FF to reflect architectural separation.
- author
- Jens Remus <jremus@sourceware.org>
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • s390
- • instruction format
- • assembler
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-10-02T00:00:00.000Z
The s390 assembler’s instruction format RRF_F0FF, where the first operand is in bits 16-19, has been renamed to RRD_F0FF. This change separates it from the general RRF format starting with the IBM z196 architecture. Several instructions, including madbr, madr, maebr, maer, msdbr, msdr, msebr, mser, myhr, and mylr, are updated to use the new RRD_F0FF format designation.