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Re: [RFA Darwin]: Add push_dummy_call for i386
On Jul 4, 2009, at 5:31 PM, H.J. Lu wrote:
On Fri, Jul 3, 2009 at 8:51 AM, Tristan Gingold<gingold@adacore.com>
wrote:
Hi,
Darwin i386 ABI is slightly different from the SVR4 one. In
particular
stack alignment is 16. As a consquence, i386 Darwin can't use the
standard
i386-tdeo.c push_dummy_call and this patch provides a Darwin
version of this
call.
Well, the code generated by gcc for Linux/i386 assumes that the
incoming
stack is aligned at 16byte. If not, functions using SSE registers
may crash.
Interesting, as I can't see the code that preserve stack alignment in
i386-tdep.c
Anyway, i386/Darwin needs to have its own push_dummy_call code as it
doesn't follow
that SVR4 ABI on many points.
Tristan.