1 /* $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>. 5 * Copyright (c) 1994 Mark Brinicombe. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the RiscBSD team. 19 * 4. The name "RiscBSD" nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD$ 36 */ 37 38 #ifndef _MACHINE_PCB_H_ 39 #define _MACHINE_PCB_H_ 40 41 #include <machine/frame.h> 42 #include <machine/vfp.h> 43 44 45 /* 46 * WARNING! 47 * Keep pcb_regs first for faster access in switch.S 48 */ 49 struct pcb { 50 struct switchframe pcb_regs; /* CPU state */ 51 u_int pcb_flags; 52 #define PCB_OWNFPU 0x00000001 53 #define PCB_NOALIGNFLT 0x00000002 54 caddr_t pcb_onfault; /* On fault handler */ 55 vm_offset_t pcb_pagedir; /* TTB0 value */ 56 /* 57 * XXX: 58 * Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely 59 * by old PMAP. Keep them here for PCB binary compatibility 60 * between old and new PMAP. 61 */ 62 uint32_t *pcb_pl1vec; /* PTR to vector_base L1 entry*/ 63 uint32_t pcb_l1vec; /* Value to stuff on ctx sw */ 64 u_int pcb_dacr; /* Domain Access Control Reg */ 65 66 struct vfp_state pcb_vfpstate; /* VP/NEON state */ 67 u_int pcb_vfpcpu; /* VP/NEON last cpu */ 68 } __aligned(8); /* 69 * We need the PCB to be aligned on 8 bytes, as we may 70 * access it using ldrd/strd, and ARM ABI require it 71 * to by aligned on 8 bytes. 72 */ 73 74 /* 75 * No additional data for core dumps. 76 */ 77 struct md_coredump { 78 int md_empty; 79 }; 80 81 void makectx(struct trapframe *tf, struct pcb *pcb); 82 83 #ifdef _KERNEL 84 85 void savectx(struct pcb *) __returns_twice; 86 #endif /* _KERNEL */ 87 88 #endif /* !_MACHINE_PCB_H_ */ 89