Bug 1290657

Summary:	Cross binutils for powerpc lacks little-endian targets
Product:	[Fedora] Fedora	Reporter:	David Gibson <dgibson>
Component:	cross-binutils	Assignee:	David Howells <dhowells>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	23	CC:	dan, dhowells
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OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
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Last Closed:	2015-12-11 05:14:18 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description David Gibson 2015-12-11 05:03:06 UTC

Description of problem:

Although powerpc is traditionally a big-endian architecture, CPUs have actually supported both endian modes for some time.  At least on IBM servers, little-endian is now the encouraged mode of operation.

However, the cross binutils for powerpc targets only includes the emulations for big-endian powerpc.

Version-Release number of selected component (if applicable):

binutils-powerpc64-linux-gnu-2.25-5.fc23.x86_64

How reproducible:

100%

Steps to Reproduce:
1. $ powerpc64-linux-gnu-ld -V

Actual results:

$ powerpc64-linux-gnu-ld -V
GNU ld version 2.25-5.fc23
  Supported emulations:
   elf64ppc
   elf32ppc
   elf32ppclinux
   elf32ppcsim


Expected results:

Something closer to the output on a native ld on a ppc64le system:

$ uname -a
Linux ibm-p8-virt-01.lab.bos.redhat.com 3.10.0-334.el7_BZ1287474test2.ppc64le #1 SMP Tue Dec 8 13:11:56 EST 2015 ppc64le ppc64le ppc64le GNU/Linux
$ ld -V
GNU ld version 2.23.52.0.1-55.el7 20130226
  Supported emulations:
   elf64lppc
   elf32lppc
   elf32lppclinux
   elf32lppcsim
   elf32_spu
   elf32ppclinux
   elf32ppc
   elf32ppcsim
   elf64ppc


Additional info:

Comment 1 David Gibson 2015-12-11 05:14:18 UTC

Sorry, never mind.

Looks like a fix is already there in brew, just hasn't made it to the repositories yet.

Given that powerpc native binutils is configured to include both BE and LE targets, it's not clear that having separate cross-binutils packages for BE and LE targets is the best choic, though.