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Make sure the pcb and initial frame area of lwp0 are zeroed since these will 

be the basis for all future lwps.
This commit is contained in:
matt 2009-12-15 18:24:47 +00:00
parent b4818d3cf1
commit f3d1f82c6e
1 changed files with 7 additions and 2 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 1.223 2009/12/14 00:46:06 matt Exp $ */
/* $NetBSD: mips_machdep.c,v 1.224 2009/12/15 18:24:47 matt Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -112,7 +112,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: mips_machdep.c,v 1.223 2009/12/14 00:46:06 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: mips_machdep.c,v 1.224 2009/12/15 18:24:47 matt Exp $");
#include "opt_cputype.h"
#include "opt_compat_netbsd32.h"
@ -1649,6 +1649,11 @@ mips_init_lwp0_uarea(void)
struct pcb * const pcb0 = lwp_getpcb(&lwp0);
lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1;
/*
* Now zero out the only two areas of the uarea that we care about.
*/
memset(lwp0.l_md.md_regs, 0, sizeof(*lwp0.l_md.md_regs));
memset(pcb0, 0, sizeof(*pcb0));
#ifdef _LP64
lwp0.l_md.md_regs->f_regs[_R_SR] = MIPS_SR_KX;
#endif