Bug 433920

Summary:	alpha/ECOFF support for GAS
Product:	Red Hat Enterprise Linux 5	Reporter:	David Leonard <david.leonard>
Component:	binutils	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	low
Version:	5.3	CC:	jan.kratochvil
Target Milestone:	rc
Target Release:	---
Hardware:	alpha
OS:	All
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-02-22 08:00:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description David Leonard 2008-02-22 04:26:04 UTC

I'm cross-compiling for a Tru64/Alpha target, which uses ECOFF.

While GAS's support for *ELF* is pretty good on Alpha, the ECOFF code has
languished .. I've tried hacking at binutils for a while now and am at a point
where I would benefit from advice from someone who might know binutils' history
and internals better than me.

The rest of binutils seems to work really well with alpha-coff (eg objdump)

My suspicion is that only a small effort is required to bring coff/alpha.h and
config/tc-alpha.c up to date.

When I enabled gas for target=alphaev68-dec-osf5.1b, gas fails the hello world
test program with:

   hello-gas.s:29: Fatal error: unhandled relocation type (null)

I tracked this down to internal reloc code DUMMY_RELOC_LITUSE_JSR not handled.
And that happens because RELOC_OP_P isn't defined. And when it is defined, then
a whole bunch of things defined only in include/elf/alpha.h are required and not
found in tc-alpha.c. Then I got lost.

So, can anyone help with some pointers to fixing this?

Comment 1 Jakub Jelinek 2008-02-22 08:00:01 UTC

If you are cross compiling to Tru64/Alpha, just build your own binutils with
that support.  I have no interest in enabling ECOFF support in binutils and
enabling it may have security consequences, because it is certainly far less
maintained code than ELF.

Comment 2 David Leonard 2008-02-23 04:38:14 UTC

Sorry, I should have reported to bug-binutils. This is not a bug for any
package released by Red Hat. Also, I am building my own binutils with a target
for Tru64, but I didn't make that clear.