[Xenomai-git] Philippe Gerum : powerpc: reinstate FE0/ FE1 depending on the per-task fpexc_mode
Module: xenomai-2.4
Branch: master
Commit: 02aef56415fef4ccc4b40ba15759efbe95e1271b
URL:
http://git.xenomai.org/?p=xenomai-2.4.git;a=commit;h=02aef56415fef4ccc4b40ba15759efbe95e1271b
Author: Philippe Gerum
Date: Wed Aug 5 14:05:22 2009 +0200
powerpc: reinstate FE0/FE1 depending on the per-task fpexc_mode
---
include/asm-powerpc/bits/pod.h | 14 +++---
1 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/include/asm-powerpc/bits/pod.h b/include/asm-powerpc/bits/pod.h
index 495ff0b..359d980 100644
--- a/include/asm-powerpc/bits/pod.h
+++ b/include/asm-powerpc/bits/pod.h
@@ -236,15 +236,23 @@ static void xnarch_save_fpu(xnarchtcb_t * tcb)
static void xnarch_restore_fpu(xnarchtcb_t * tcb)
{
#ifdef CONFIG_XENO_HW_FPU
+ struct thread_struct *ts;
+ struct pt_regs *regs;
+
if (tcb->fpup) {
rthal_restore_fpu(tcb->fpup);
/*
* Note: Only enable FP in MSR, if it was enabled when
* we saved the fpu state.
*/
- if (tcb->user_fpu_owner &&
- tcb->user_fpu_owner->thread.regs)
- tcb->user_fpu_owner->thread.regs->msr |=
(MSR_FP|MSR_FE0|MSR_FE1);
+ if (tcb->user_fpu_owner) {
+ ts = &tcb->user_fpu_owner->thread;
+ regs = ts->regs;
+ if (regs) {
+ regs->msr &= ~(MSR_FE0|MSR_FE1);
+ regs->msr |= (MSR_FP|ts->fpexc_mode);
+ }
+ }
}
/*
* FIXME: We restore FPU "as it was" when Xenomai preempted Linux,
___
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[Xenomai-git] Philippe Gerum : powerpc: reinstate FE0/ FE1 depending on the per-task fpexc_mode
Module: xenomai-head
Branch: master
Commit: e4d94fed59df7f1bd6b2e7017c4e3380aafd7e63
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=e4d94fed59df7f1bd6b2e7017c4e3380aafd7e63
Author: Philippe Gerum
Date: Wed Aug 5 14:05:22 2009 +0200
powerpc: reinstate FE0/FE1 depending on the per-task fpexc_mode
---
include/asm-powerpc/bits/pod.h | 14 +++---
1 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/include/asm-powerpc/bits/pod.h b/include/asm-powerpc/bits/pod.h
index 3265453..d0c2bb4 100644
--- a/include/asm-powerpc/bits/pod.h
+++ b/include/asm-powerpc/bits/pod.h
@@ -225,15 +225,23 @@ static void xnarch_save_fpu(xnarchtcb_t * tcb)
static void xnarch_restore_fpu(xnarchtcb_t * tcb)
{
#ifdef CONFIG_XENO_HW_FPU
+ struct thread_struct *ts;
+ struct pt_regs *regs;
+
if (tcb->fpup) {
rthal_restore_fpu(tcb->fpup);
/*
* Note: Only enable FP in MSR, if it was enabled when
* we saved the fpu state.
*/
- if (tcb->user_fpu_owner &&
- tcb->user_fpu_owner->thread.regs)
- tcb->user_fpu_owner->thread.regs->msr |=
(MSR_FP|MSR_FE0|MSR_FE1);
+ if (tcb->user_fpu_owner) {
+ ts = &tcb->user_fpu_owner->thread;
+ regs = ts->regs;
+ if (regs) {
+ regs->msr &= ~(MSR_FE0|MSR_FE1);
+ regs->msr |= (MSR_FP|ts->fpexc_mode);
+ }
+ }
}
/*
* FIXME: We restore FPU "as it was" when Xenomai preempted Linux,
___
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