[Bug 1974115] Re: [UBUNTU 22.04] BINUTILS: Adding new platform name IBM z16

[Launchpad Bug Tracker]

This bug was fixed in the package binutils - 2.38-4ubuntu2

---------------
binutils (2.38-4ubuntu2) jammy-proposed; urgency=medium

  * SRU: LP: #1982105. Update from the binutils 2.38 branch:
    - IBM zSystems: Add support for z16 as CPU name. LP: #1974115.
    - Fix PR libctf/29242, linking together multiple objects derived from
      the same source.
    - PowerPC64: fix assertion in ppc_build_one_stub with -Os code.
    - Fix PR ld/29216, x86: Properly handle IFUNC function pointer reference.
    - AArch64: Enable FP16 by default for Armv9-A.
    - Fix PR binutils/29142, segv in ar with empty archive and libdeps
      specified.
    - M68K: avoid quadratic slowdlow in label alignment check.
    - Adjust ld ctf test for 32-bit targets.

binutils (2.38-4ubuntu1) kinetic; urgency=medium

  * Merge with Debian; remaining changes:
    - Build from upstream sources.

binutils (2.38-4) unstable; urgency=medium

  * Update from the binutils 2.38 branch:
    - Fix PR ld/29087, x86: invalid relocation against protected symbol.
    - s390: Add DT_JMPREL pointing to .rela.[i]plt with static-pie.
    - Fix PR ld/22263, s390: Avoid dynamic TLS relocs in PIE.
    - Fix PR libctf/28933: ld: diagnose corrupted CTF header cth_strlen.
    - Fix PR 28885.
    - PR28959, obdump doesn't disassemble mftb instruction.
    - PowerPC64 DT_RELR relative reloc addresses. LP: #1978129.
  * Fix reproducible builds: source tarball embeds build user and group.
    Closes: #1010238.

 -- Matthias Klose <doko at ubuntu.com>  Tue, 19 Jul 2022 12:17:47 +0200

** Changed in: binutils (Ubuntu Jammy)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1974115

Title:
  [UBUNTU 22.04] BINUTILS: Adding new platform name IBM z16

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in binutils package in Ubuntu:
  Fix Released
Status in binutils source package in Jammy:
  Fix Released
Status in binutils source package in Kinetic:
  Fix Released

Bug description:
  SRU Justification:
  ==================

  [Impact]

   * As of today the architectural (level) name 'arch14' is used
     as CPU name for the new IBM z16 system.

   * The real name 'z16' couldn't be used until officially announced.

   * That happened meanwhile, hence we can now add and use the real
  name.

  [Test Plan]

   * Check if the same (proper) opcodes are detected on an IBM z16
     system with and without the patch.
     Since only the identification and name of a z16 system was modified.

   * Or the simplest test is probably to check
     (after having 'binutils' installed on an Ubuntu 22.04 s390x system)
     if not only:
     'as -m64 -march=arch14 --target-help'
     but also:
     'as -m64 -march=z16 --target-help'
     succeeds and leads to the same output.
     (As it does for '-march=arch13' and '-march=arch15'.)

  [Where problems could occur]

   * Issues could happen if the conditional statement that look
     for architectural / CPU name are paired wrongly, since:

   * 'z16' belongs to 'arch14', 'z15' to 'arch13', etc.

   * If these pairs are not handled correctly,
     or the identification is erroneous
     a wrong system might be identified and wrong instructions used etc.

  [Other]

   * This is a hardware enablement SRU to enhance the IBM z16 support.

  __________

  After the announcement support for the official machine name z16 has
  been added to binutils. Please consider picking up the following patch
  from 2.37 branch:

  commit e24d2a2d11008aa363366c1087219f3e3405782a
  (origin/binutils-2_37-branch, 2.37)

      IBM zSystems: Add support for z16 as CPU name.

      So far z16 was identified as arch14. After the machine has been
      announced we can now add the real name.

      (cherry picked from commit 69341966def7f6551bc4452684136831d6a6941c)
      (cherry picked from commit fb4d148004f28494e9fb5d2400a13308d07a7988)

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