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Re: [Qemu-devel] [RFC] TCI for ARM and other hosts with aligned args (wa
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [RFC] TCI for ARM and other hosts with aligned args (was: Re: [RFC] TCG unit testing) |
Date: |
Tue, 10 Sep 2013 22:57:37 +0100 |
On 10 September 2013 22:34, Stefan Weil <address@hidden> wrote:
> For native compilations, TCG_TARGET_CALL_ALIGN_ARGS can be set from
> configure.
> Cross compilations cannot set that macro automatically (or is there some
> way to
> do this?), so a configure option is needed if the cross target is unknown.
I think setting TCG_TARGET_CALL_ALIGN_ARGS will
work only by fluke and in some cases. For TCI you need
to either:
* really call each C function by its proper prototype
(probably with something funky to pull this out of our
existing macro definitions of helpers)
* use libffi or some equivalent to get the calling convention
right for you
-- PMM