[RFC PATCH 1/4] ARM: Allow assembler.h to be used with inline asm

[Nicolas Pitre]

On Wed, 9 Oct 2013, Dave Martin wrote:

> On Wed, Oct 09, 2013 at 03:42:11PM +0100, Russell King - ARM Linux wrote:
> > On Wed, Oct 09, 2013 at 03:29:50PM +0100, Dave Martin wrote:
> > > There are a few things in assembler.h that would be useful with
> > > inline asm, but currently assembler.h refuses to be included into C
> > > files.
> > > 
> > > In particular, the optional feature macros (PLD() and friends) can
> > > be used sensibly with inline asm, with a string argument.
> > > 
> > > This patch enables the relevant parts of aassembler.h to be
> > > included in C files and used in inline asm.
> > > 
> > > Since assembler.h by definition can't be included in any C file up
> > > to now, this should not introduce any namespace clashes.
> > 
> > I think it would be better to move the two macros (PLD and CALGN) out of
> > this file, rather than covering almost the entire file with this #ifdef.
> 
> Certainly we could do that.  When I started this hack, I though that a
> larger proportion of the file would be relevant...
> 
> Any thoughts on a sensible name?  asm/asm-common.h, maybe?

Since there is no need for CALGN() or PLD() in C code yet, maybe it is 
best to leave them where they are for the time being.

And then adding __asm_swab32() to opcodes.h feels quite natural with the 
purpose of that file's content.  Then including that fine to solve the 
CCI code endianness should be fine.

If anything, maybe it is the name opcodes.h which is misrepresenting the 
scope of its content.


Nicolas