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/*-
* Copyright (c) 2014 Justin Hibbits
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/ptrace.h>
#include <sys/sysent.h>
#include <machine/altivec.h>
#include <machine/cpu.h>
#include <machine/md_var.h>
#include <machine/pcb.h>
int
cpu_ptrace(struct thread *td, int req, void *addr, int data)
{
int error;
struct pcb *pcb;
struct vec vec;
pcb = td->td_pcb;
bzero(&vec, sizeof(vec));
error = EINVAL;
switch (req) {
case PT_GETVRREGS:
if (!(cpu_features & PPC_FEATURE_HAS_ALTIVEC))
break;
if (pcb->pcb_flags & PCB_VEC) {
save_vec_nodrop(td);
memcpy(&vec, &pcb->pcb_vec, sizeof(vec));
}
error = copyout(&vec, addr, sizeof(vec));
break;
case PT_SETVRREGS:
if (!(cpu_features & PPC_FEATURE_HAS_ALTIVEC))
break;
error = copyin(addr, &vec, sizeof(vec));
if (error == 0) {
pcb->pcb_flags |= PCB_VEC;
memcpy(&pcb->pcb_vec, &vec, sizeof(vec));
}
break;
default:
break;
}
return (error);
}
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