Re: [Fwd: Activity Day June 10th - ARMv7 F15 hardfp bringup]

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On Sat, 2011-06-04 at 20:53 -0400, Jon Masters wrote:
> [0] We're making a "one time" incompatible ABI switch in F-15 bringup to
> the "hard float" ABI defined in section 6 of the ARM AAPCS (commonly
> referred to as the ARM EABI - but that doesn't actually exist as a
> name). The procedure call standard will be ARM AAPCS vfpv3-d16, as
> defined in section 6 of that document. Other distros are switching and
> this will form the basis of any LSB standardization effort later on.
> Think of v7 and v5 as being different arches, which they are really.

And to further clarify:

- This is an addition, not a switch -- the intention is to continue to
support armv5tel in addition to armv7hl at this time -- Tegra and
Marvell Kirkwood (including plug computer) devices which do not support
armv7hl will continue to work with armv5tel.

- The significant incompatibility is hardfp vs. softfp ABI (moreso than
v7 vs. v5).

--
Chris

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