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Replace the body of lcsplx() with an open-coded version of spllower() 

and return the previous priority level, which is actually expected by
cpu_switch() in order to it be stashed into the PCB.
This commit is contained in:
kleink 2000-08-14 08:58:39 +00:00
parent ec701021fd
commit 1790b00d25
1 changed files with 16 additions and 4 deletions
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20
sys/arch/prep/prep/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.9 2000/07/02 04:40:44 cgd Exp $ */
/* $NetBSD: machdep.c,v 1.10 2000/08/14 08:58:39 kleink Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -106,7 +106,7 @@ void initppc __P((u_long, u_long, u_int, void *));
void identifycpu __P((void));
void dumpsys __P((void));
void strayintr __P((int));
void lcsplx __P((int));
int lcsplx __P((int));
/* Our exported CPU info; we have only one right now. */
struct cpu_info cpu_info_store;
@ -921,12 +921,24 @@ halt_sys:
/* NOTREACHED */
}
void
/*
* lcsplx() is called from locore; it is an open-coded version of
* splx() differing in that it returns the previous priority level.
*/
int
lcsplx(ipl)
int ipl;
{
int oldcpl;
splx(ipl);
__asm__ volatile("sync; eieio\n"); /* reorder protect */
oldcpl = cpl;
cpl = ipl;
if (ipending & ~ipl)
do_pending_int();
__asm__ volatile("sync; eieio\n"); /* reorder protect */
return (oldcpl);
}
/*