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Panic if `auxreg' is requested but is not there. Not much we can do about 

users of AUXIO_REG; they'll die with a data fault.
This commit is contained in:
pk 1996-12-11 00:51:06 +00:00
parent 2883126ca7
commit 9b87837f21
1 changed files with 10 additions and 3 deletions
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13
sys/arch/sparc/sparc/auxreg.c
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@ -1,4 +1,4 @@
/* $NetBSD: auxreg.c,v 1.17 1996/12/10 23:17:42 pk Exp $ */ /* $NetBSD: auxreg.c,v 1.18 1996/12/11 00:51:06 pk Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -133,11 +133,18 @@ unsigned int
auxregbisc(bis, bic) auxregbisc(bis, bic)
int bis, bic; int bis, bic;
{ {
register int v, s = splhigh(); register int v, s;
if (auxio_reg == 0)
/*
* Not all machines have an `aux' register; devices that
* depend on it should not get configured if it's absent.
*/
panic("no aux register");
s = splhigh();
v = *AUXIO_REG; v = *AUXIO_REG;
*AUXIO_REG = ((v | bis) & ~bic) | AUXIO_MB1; *AUXIO_REG = ((v | bis) & ~bic) | AUXIO_MB1;
splx(s); splx(s);
return v; return v;
} }