This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: 32bit Calling conventions on linux/ppc.
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Joslwah <joslwah at gmail dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Tue, 12 Dec 2006 14:42:15 -0500
- Subject: Re: 32bit Calling conventions on linux/ppc.
- References: <20061116173208.cb8cdac3.joslwah@gmail.com>
>>>>> Joslwah writes:
Joslwah> Looking at the Linux 32bit PowerPC ABI spec, it appears to me that
Joslwah> floats in excess of those that are passed in registers are supposed to
Joslwah> be promoted to doubles and passed on the stack. Examing the resulting
Joslwah> stack from a gcc generated C call it appears they are passed as
Joslwah> floats.
Joslwah> Can someone confirm/refute this, or else point me to an ABI that says
Joslwah> that they should be passed as floats.
I have not been able to find any motivation for promoting floats
passed ont the stack. Does this provide some form of compatibility with
SPARC?
David