84233ddb80
This is pretty much a complete rewrite based on the existing i386 code. The patches have been circulating for a couple years and have been looked at by plenty of people, but I'm not putting anybody on the hook as having reviewed this in any formal sense except myself. After this has gotten wider testing from the user community, ARM_NEW_PMAP will become the default and various dregs of the old pmap code will be removed. Submitted by: Svatopluk Kraus <onwahe@gmail.com>, Michal Meloun <meloun@miracle.cz>
86 lines
3.0 KiB
C
86 lines
3.0 KiB
C
/* $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $ */
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/*-
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* Copyright (c) 2001 Matt Thomas <matt@3am-software.com>.
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* Copyright (c) 1994 Mark Brinicombe.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the RiscBSD team.
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* 4. The name "RiscBSD" nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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* $FreeBSD$
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*/
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#ifndef _MACHINE_PCB_H_
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#define _MACHINE_PCB_H_
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#include <machine/fp.h>
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#include <machine/frame.h>
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/*
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* WARNING!
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* Keep pcb_regs first for faster access in switch.S
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*/
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struct pcb {
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struct switchframe pcb_regs; /* CPU state */
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u_int pcb_flags;
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#define PCB_OWNFPU 0x00000001
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#define PCB_NOALIGNFLT 0x00000002
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caddr_t pcb_onfault; /* On fault handler */
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#ifdef ARM_NEW_PMAP
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uint32_t pcb_pagedir; /* TTB0 value */
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#else
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vm_offset_t pcb_pagedir; /* PT hooks */
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uint32_t *pcb_pl1vec; /* PTR to vector_base L1 entry*/
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uint32_t pcb_l1vec; /* Value to stuff on ctx sw */
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u_int pcb_dacr; /* Domain Access Control Reg */
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#endif
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struct vfp_state pcb_vfpstate; /* VP/NEON state */
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u_int pcb_vfpcpu; /* VP/NEON last cpu */
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} __aligned(8); /*
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* We need the PCB to be aligned on 8 bytes, as we may
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* access it using ldrd/strd, and ARM ABI require it
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* to by aligned on 8 bytes.
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*/
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/*
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* No additional data for core dumps.
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*/
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struct md_coredump {
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int md_empty;
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};
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void makectx(struct trapframe *tf, struct pcb *pcb);
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#ifdef _KERNEL
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void savectx(struct pcb *) __returns_twice;
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PCB_H_ */
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