Date: Thu, 25 May 2000 19:03:28 +0200 From: Christian Weisgerber <naddy@unix-ag.uni-kl.de> To: freebsd-alpha@freebsd.org Subject: uac.c Message-ID: <20000525190328.A80312@fettuccini.unix-ag.uni-kl.de>
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I'm looking at uac.c, and there are some things I don't understand.
| #include <sys/types.h>
| #include <machine/sysarch.h>
| #include <machine/proc.h>
| extern int sysarch(int, char *);
Why isn't sysarch() declared in any header file?
| struct parms {
| u_int64_t uac;
| };
| int
| alpha_setuac(u_int64_t uac)
| {
| struct parms p;
|
| p.uac = uac;
| return (sysarch(ALPHA_SET_UAC, (char *)&p));
| }
The use of a struct to pass a single 64-bit int seems bizarre.
Is this used to force proper alignment? (Since char* presumably
isn't guaranteed to be quadword-aligned.)
--
Christian "naddy" Weisgerber naddy@unix-ag.uni-kl.de
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