Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Make sure the enable bit is not set when restoring the VFP context since 

that has special meaning to the VFP PCU code.
This commit is contained in:
matt 2012-12-08 06:46:49 +00:00
parent b72a1f38b6
commit cb733fbb03
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/arch/arm/arm/process_machdep.c
View File

@ -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 $");
#include <sys/proc.h>
#include <sys/ptrace.h>
@ -144,6 +144,7 @@ __KERNEL_RCSID(0, "$NetBSD: process_machdep.c,v 1.24 2012/12/05 19:05:46 matt Ex
#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 @@ process_read_fpregs(struct lwp *l, struct fpreg *regs)
{
#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 @@ process_write_fpregs(struct lwp *l, const struct fpreg *regs)
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);
}