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Subject: Re: AVR32 architecture patch against Linux 2.6.18-rc1 available
From: David Woodhouse <dwmw2@infradead.org>
To: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Date: Mon, 10 Jul 2006 10:57:33 +0100
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On Mon, 2006-07-10 at 11:03 +0200, Haavard Skinnemoen wrote:
+	.global	__sys_pselect6
+	.type	__sys_pselect6,@function
+__sys_pselect6:
+	pushm	lr
+	st.w	--sp, ARG6
+	rcall	sys_pselect6
+	sub	sp, -4
+	popm	pc


sys_pselect6() is just a hackish workaround for the fact that most
architectures don't allow seven-argument syscalls. Having your own
workaround in assembly, which then calls sys_pselect6(), seems a little
odd -- why not call sys_pselect7() directly instead from your assembly
wrapper?

Stop a moment and work out precisely what the best way to pass the
arguments _is_ if you have only 5 registers and the stack, perhaps.

-- 
dwmw2

¹ Note that I'm just _asking_ -- the answer "Uli doesn't want to support
anything but the basic 6-argument sys_pselect6() in glibc" is an
acceptable answer on your part.