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Do not attempt mips3 style cache flush on mips1 in setregs() as it 

is illegal to flush on user addresses.  In theory the race exists
on MIPS1, but it is rather unlikely in common use.  I have
seen it with regress/sys/kern/sigtramp on a QED 5231 system.
This commit is contained in:
jeffs 2000-07-27 06:28:06 +00:00
parent a18c2d780f
commit e4a0934c13
1 changed files with 5 additions and 4 deletions
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9
sys/arch/mips/mips/mips_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: mips_machdep.c,v 1.95 2000/07/20 18:33:42 jeffs Exp $ */
/* $NetBSD: mips_machdep.c,v 1.96 2000/07/27 06:28:06 jeffs Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -52,7 +52,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: mips_machdep.c,v 1.95 2000/07/20 18:33:42 jeffs Exp $");
__KERNEL_RCSID(0, "$NetBSD: mips_machdep.c,v 1.96 2000/07/27 06:28:06 jeffs Exp $");
#include "opt_compat_netbsd.h"
#include "opt_compat_ultrix.h"
@ -669,10 +669,11 @@ setregs(p, pack, stack)
* Make sure sigreturn trampoline is coherent.
*/
#ifdef MIPS3
if (CPUISMIPS3)
if (CPUISMIPS3) {
MachFlushDCache((vaddr_t)p->p_sigacts->ps_sigcode, szsigcode);
MachFlushICache((vaddr_t)p->p_sigacts->ps_sigcode, szsigcode);
}
#endif
MachFlushICache((vaddr_t)p->p_sigacts->ps_sigcode, szsigcode);
memset(f, 0, sizeof(struct frame));
f->f_regs[SP] = (int) stack;