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Save VFP state on fork().

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Update the copy of VFP state in PCB before it is cloned for new process.

MFC after:	2 weeks
This commit is contained in:
mmel 2017-03-26 08:36:20 +00:00
parent 1f0e4d50b2
commit 45f6b40f83
1 changed files with 8 additions and 0 deletions
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8
sys/arm/arm/vm_machdep.c
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@ -110,6 +110,14 @@ cpu_fork(register struct thread *td1, register struct proc *p2,
#ifndef CPU_XSCALE_CORE3 #ifndef CPU_XSCALE_CORE3
pmap_use_minicache(td2->td_kstack, td2->td_kstack_pages * PAGE_SIZE); pmap_use_minicache(td2->td_kstack, td2->td_kstack_pages * PAGE_SIZE);
#endif #endif
#endif
#ifdef VFP
/* Store actual state of VFP */
if (curthread == td1) {
critical_enter();
vfp_store(&td1->td_pcb->pcb_vfpstate, false);
critical_exit();
}
#endif #endif
td2->td_pcb = pcb2; td2->td_pcb = pcb2;