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From: Harald Krapfenbauer <krapfenbauer@ict.tuwien.ac.at>
To: "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>
Subject: 64-bit values on 32-bit machine
Date: Tue, 08 Jul 2008 11:34:37 +0200	[thread overview]
Message-ID: <487334AD.70100@ict.tuwien.ac.at> (raw)

Hello,

I want to know how 64-bit values are passed on a little-endian 32-bit
MIPS machine on function calls.

If there is one 64-bit argument to a function, it is passed in registers
a0-a1 I think, but does a0 contain the lower 4 bytes or the upper 4?

Similarly, if there are several arguments so that a 64-bit argument is
passed on the stack: Do the lower 4 bytes go to the lower address or to
the higher?

Thanks in advance!
Harald

             reply	other threads:[~2008-07-08  9:34 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-08  9:34 Harald Krapfenbauer [this message]
2008-07-08 15:14 ` 64-bit values on 32-bit machine Ralf Baechle

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