Re: arm vmsr bug?

[nick clifton]

Hi Clive,

> I think that there's a bug in the generation of ARM vmsr instructions

For future reference, it helps if you can open a bug report for problems 
like this.  You can use the bugzilla system here to do this:

  http://sourceware.org/bugzilla/

> in binutils 2.2.

I assume that you mean 2.22.  Version 2.2 is *really* old...

>          vmsr    fpexc, r0

> I think this is a bug, unless there's some reason for disallowing fpsid&  fpexc 
> that I haven't found....

No.  It was just a snafu - the assembler was only supporting the normal 
mode version of the VMSR instruction, not the priviledged mode versions 
of it.

I am going to apply the patch below to fix this problem, and a similar 
one for the VMRS instruction.

Cheers
  Nick

gas/ChangeLog
2012-03-20  Nick Clifton  <address@hidden>

        * config/tc-arm.c (do_vmrs): Accept priviledged mode VFP system
        registers.
        (do_vmsr): Likewise.
        (arm_opcode_insns): Do not default to using the FPSCR register in
        the VMRS and VMSR registers.

gas/testsuite/ChangeLog
2012-03-20  Nick Clifton  <address@hidden>

        * gas/arm/vfp1xD.s: Add tests of the VMSR ad VMRS instructions in
        priviledged modes.
        * gas/arm/vfp1xD.d: Update expected output.

vmsr.patch
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