676420e8b1
This structure must be binary compatible regardless of PMAP version being used. Create reserved section for NEW_PMAP to make other variables be placed exactly in the same memory addresses. This fixes kgdb/gdb behavoiur, which uses pcb.h stuctures. The NEW_PMAP is kernel flag, so it does not propagate to the buildworld, what makes the tools using pcb.h unable to parse PCB data. Reviewed by: mmel, kib Submitted by: Wojciech Macek <wma@semihalf.com> Obtained from: Semihalf Sponsored by: Juniper Networks Inc. Differential Revision: https://reviews.freebsd.org/D4011
89 lines
3.1 KiB
C
89 lines
3.1 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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vm_offset_t pcb_pagedir; /* TTB0 value */
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/*
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* XXX:
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* Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely
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* by old PMAP. Keep them here for PCB binary compatibility
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* between old and new PMAP.
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*/
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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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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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