From ae8d2f526e6b6c8aee5e2e126dfc50b067922fc9 Mon Sep 17 00:00:00 2001
From: "Charles.Forsyth" <devnull@localhost>
Date: Wed, 19 Nov 2008 01:52:07 +0000
Subject: 20081119-0151

---
 os/pc/fns.h  |  2 +-
 os/pc/main.c | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

(limited to 'os')

diff --git a/os/pc/fns.h b/os/pc/fns.h
index d4b61034..de8cfbe1 100644
--- a/os/pc/fns.h
+++ b/os/pc/fns.h
@@ -48,7 +48,7 @@ int	i8259enable(Vctl*);
 int	i8259vecno(int);
 int	i8259disable(int);
 void	idle(void);
-#define	idlehands()			/* nothing to do in the runproc */
+void	idlehands(void);
 int	inb(int);
 void	insb(int, void*, int);
 ushort	ins(int);
diff --git a/os/pc/main.c b/os/pc/main.c
index df4f240e..11e8d4db 100644
--- a/os/pc/main.c
+++ b/os/pc/main.c
@@ -455,3 +455,14 @@ isaconfig(char *class, int ctlrno, ISAConf *isa)
 	}
 	return 1;
 }
+
+/*
+ *  put the processor in the halt state if we've no processes to run.
+ *  an interrupt will get us going again.
+ */
+void
+idlehands(void)
+{
+	if(conf.nmach == 1)
+		halt();
+}
-- 
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