public inbox for binutils@sourceware.org
 help / color / mirror / Atom feed
* Linker --fix-v4bx problem
@ 2020-02-09 16:34 Gary Partis
  2020-02-27 16:06 ` Nick Clifton
  0 siblings, 1 reply; 3+ messages in thread
From: Gary Partis @ 2020-02-09 16:34 UTC (permalink / raw)
  To: binutils

Hello

I am using GNU ld version 2.31.1 to target ARMv3 (ARM610/710) processors. Primarily, GCC's libgcc contains "BX LR" instructions which we want changed to "MOV PC,LR" so to be compatible with older processors, but after running the linker with the "--fix-vxb4" directive the BX instructions are still there (we use objdump to disassemble the resultant ELF file to check).

Are we missing something really obvious or is the "--fix-v4bx" directive broken in some way?

Thanks in advance.

Kind regards

Gary Partis

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: Linker --fix-v4bx problem
  2020-02-09 16:34 Linker --fix-v4bx problem Gary Partis
@ 2020-02-27 16:06 ` Nick Clifton
  2020-02-29 19:39   ` ***UNCHECKED*** " Gary Partis
  0 siblings, 1 reply; 3+ messages in thread
From: Nick Clifton @ 2020-02-27 16:06 UTC (permalink / raw)
  To: Gary Partis, binutils

Hi Gary,

> I am using GNU ld version 2.31.1 to target ARMv3 (ARM610/710) processors. Primarily, GCC's libgcc contains "BX LR" instructions which we want changed to "MOV PC,LR" so to be compatible with older processors, but after running the linker with the "--fix-vxb4" directive the BX instructions are still there (we use objdump to disassemble the resultant ELF file to check).
> 
> Are we missing something really obvious or is the "--fix-v4bx" directive broken in some way?

It could be either situation.  Please can you file a bug report here, and include a test case:

  https://sourceware.org/bugzilla/

Thanks.

Cheers
  Nick

^ permalink raw reply	[flat|nested] 3+ messages in thread
* ***UNCHECKED*** RE: Linker --fix-v4bx problem
  2020-02-27 16:06 ` Nick Clifton
@ 2020-02-29 19:39   ` Gary Partis
  0 siblings, 0 replies; 3+ messages in thread
From: Gary Partis @ 2020-02-29 19:39 UTC (permalink / raw)
  To: Nick Clifton, binutils

Hi Nick

Bug 25616 Submitted.

Many  thanks,

Gary


-----Original Message-----
From: Nick Clifton [mailto:nickc@redhat.com] 
Sent: 27 February 2020 16:07
To: Gary Partis; binutils@sourceware.org
Subject: Re: Linker --fix-v4bx problem

Hi Gary,

> I am using GNU ld version 2.31.1 to target ARMv3 (ARM610/710) processors. Primarily, GCC's libgcc contains "BX LR" instructions which we want changed to "MOV PC,LR" so to be compatible with older processors, but after running the linker with the "--fix-vxb4" directive the BX instructions are still there (we use objdump to disassemble the resultant ELF file to check).
> 
> Are we missing something really obvious or is the "--fix-v4bx" directive broken in some way?

It could be either situation.  Please can you file a bug report here, and include a test case:

  https://sourceware.org/bugzilla/

Thanks.

Cheers
  Nick




^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-02-29 19:39 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-09 16:34 Linker --fix-v4bx problem Gary Partis
2020-02-27 16:06 ` Nick Clifton
2020-02-29 19:39   ` ***UNCHECKED*** " Gary Partis

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).