Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/sys/arch/arm/arm Make sure the enable bit is not set when re...
details: https://anonhg.NetBSD.org/src/rev/d7e2f7559ea6
branches: trunk
changeset: 783150:d7e2f7559ea6
user: matt <matt%NetBSD.org@localhost>
date: Sat Dec 08 06:46:49 2012 +0000
description:
Make sure the enable bit is not set when restoring the VFP context since
that has special meaning to the VFP PCU code.
diffstat:
sys/arch/arm/arm/process_machdep.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diffs (52 lines):
diff -r 2601dd79a5e0 -r d7e2f7559ea6 sys/arch/arm/arm/process_machdep.c
--- a/sys/arch/arm/arm/process_machdep.c Sat Dec 08 02:41:54 2012 +0000
+++ b/sys/arch/arm/arm/process_machdep.c Sat Dec 08 06:46:49 2012 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: process_machdep.c,v 1.24 2012/12/05 19:05:46 matt Exp $ */
+/* $NetBSD: process_machdep.c,v 1.25 2012/12/08 06:46:49 matt Exp $ */
/*
* Copyright (c) 1993 The Regents of the University of California.
@@ -133,7 +133,7 @@
#include <sys/param.h>
-__KERNEL_RCSID(0, "$NetBSD: process_machdep.c,v 1.24 2012/12/05 19:05:46 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: process_machdep.c,v 1.25 2012/12/08 06:46:49 matt Exp $");
#include <sys/proc.h>
#include <sys/ptrace.h>
@@ -144,6 +144,7 @@
#include <machine/reg.h>
#include <arm/armreg.h>
+#include <arm/vfpreg.h>
int
process_read_regs(struct lwp *l, struct reg *regs)
@@ -175,13 +176,15 @@
{
#ifdef FPU_VFP
if (curcpu()->ci_vfp_id == 0) {
- return EINVAL;
+ memset(regs, 0, sizeof(regs));
+ return 0;
}
const struct pcb * const pcb = lwp_getpcb(l);
vfp_savecontext();
regs->fpr_vfp = pcb->pcb_vfp;
+ regs->fpr_vfp.vfp_fpexc &= ~VFP_FPEXC_EN;
#endif
- return(0);
+ return 0;
}
int
@@ -227,6 +230,7 @@
vfp_discardcontext();
l->l_md.md_flags |= MDLWP_VFPUSED;
pcb->pcb_vfp = regs->fpr_vfp;
+ pcb->pcb_vfp.vfp_fpexc &= ~VFP_FPEXC_EN;
#endif
return(0);
}
Home |
Main Index |
Thread Index |
Old Index