Re: [PATCH] convert arm memcpy asm to UAL, remove .word hacks

[Khem Raj <raj.khem@gmail.com>]

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> On Oct 18, 2015, at 5:17 PM, Rich Felker <dalias@libc.org> wrote:
> 
> I've found that, contrary to the message in commit
> 9367fe926196f407705bb07cd29c6e40eb1774dd, all relevant gas versions
> actually do support .syntax unified, and assemble memcpy.s
> successfully with the attached patch applied. If there are no
> objections I'd like to go ahead and commit it. The only remaining
> .word hacks I'm aware of are in setjmp and longjmp, but they may still
> be needed to avoid wrongly flagging plain EABI (softfloat) binaries
> as needing hard float.

IIRC .syntax should not affect the fp ABI assumptions, Its plainly for unifying arm/thumb-ness
in asm files and .eabi_attribute is the directive which could set FP ABI and I don’t see it
being set in asm file which means it will be set depending on compiler cmdline.


> I'd really like some feedback on what the issues
> with that are and how to best avoid problems. Hopefully we can make
> the transition to UAL syntax quickly in the next release cycle and get
> Cortex-M support (with the new ARM FDPIC ABI).
> 
> Rich
> <arm-ual1.diff>


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