Add Altivec/VMX register support to ptrace.
MFC after: 2 weeks Relnotes: yes
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930a420683
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64b83a0576
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=277166
@ -202,6 +202,7 @@ powerpc/powerpc/pic_if.m standard
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powerpc/powerpc/pmap_dispatch.c standard
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powerpc/powerpc/platform.c standard
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powerpc/powerpc/platform_if.m standard
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powerpc/powerpc/ptrace_machdep.c standard
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powerpc/powerpc/sc_machdep.c optional sc
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powerpc/powerpc/setjmp.S standard
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powerpc/powerpc/sigcode32.S optional powerpc | compat_freebsd32
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@ -1,6 +1,6 @@
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2014 Justin Hibbits
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -33,4 +33,9 @@
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#ifndef _MACHINE_PTRACE_H_
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#define _MACHINE_PTRACE_H_
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#define __HAVE_PTRACE_MACHDEP
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#define PT_GETVRREGS (PT_FIRSTMACH + 0)
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#define PT_SETVRREGS (PT_FIRSTMACH + 1)
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#endif
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@ -24,6 +24,14 @@ struct fpreg {
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double fpscr;
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};
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/* Must match pcb.pcb_vec */
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struct vmxreg {
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uint32_t vr[32][4];
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uint32_t pad[2];
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uint32_t vrsave;
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uint32_t vscr;
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};
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struct dbreg {
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unsigned int junk;
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};
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@ -43,6 +51,10 @@ struct fpreg32 {
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struct fpreg data;
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};
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struct vmxreg32 {
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struct vmxreg data;
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};
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struct dbreg32 {
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struct dbreg data;
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};
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82
sys/powerpc/powerpc/ptrace_machdep.c
Normal file
82
sys/powerpc/powerpc/ptrace_machdep.c
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@ -0,0 +1,82 @@
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/*-
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* Copyright (c) 2014 Justin Hibbits
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_compat.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/ptrace.h>
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#include <sys/sysent.h>
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#include <machine/altivec.h>
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#include <machine/cpu.h>
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#include <machine/md_var.h>
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#include <machine/pcb.h>
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int
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cpu_ptrace(struct thread *td, int req, void *addr, int data)
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{
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int error;
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struct pcb *pcb;
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struct vec vec;
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pcb = td->td_pcb;
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bzero(&vec, sizeof(vec));
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error = EINVAL;
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switch (req) {
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case PT_GETVRREGS:
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if (!(cpu_features & PPC_FEATURE_HAS_ALTIVEC))
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break;
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if (pcb->pcb_flags & PCB_VEC) {
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save_vec_nodrop(td);
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memcpy(&vec, &pcb->pcb_vec, sizeof(vec));
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}
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error = copyout(&vec, addr, sizeof(vec));
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break;
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case PT_SETVRREGS:
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if (!(cpu_features & PPC_FEATURE_HAS_ALTIVEC))
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break;
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error = copyin(addr, &vec, sizeof(vec));
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if (error == 0) {
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pcb->pcb_flags |= PCB_VEC;
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memcpy(&pcb->pcb_vec, &vec, sizeof(vec));
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}
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break;
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default:
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break;
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}
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return (error);
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}
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