1 /* $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>. 7 * Copyright (c) 1994 Mark Brinicombe. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the RiscBSD team. 21 * 4. The name "RiscBSD" nor the name of the author may be used to 22 * endorse or promote products derived from this software without specific 23 * prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD$ 38 */ 39 40 #ifndef _MACHINE_PCB_H_ 41 #define _MACHINE_PCB_H_ 42 43 #include <machine/frame.h> 44 #include <machine/vfp.h> 45 46 /* 47 * WARNING! 48 * Keep pcb_regs first for faster access in switch.S 49 */ 50 struct pcb { 51 struct switchframe pcb_regs; /* CPU state */ 52 u_int pcb_flags; 53 #define PCB_OWNFPU 0x00000001 54 #define PCB_NOALIGNFLT 0x00000002 55 caddr_t pcb_onfault; /* On fault handler */ 56 vm_offset_t pcb_pagedir; /* TTB0 value */ 57 /* 58 * XXX: 59 * Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely 60 * by old PMAP. Keep them here for PCB binary compatibility 61 * between old and new PMAP. 62 */ 63 uint32_t *pcb_pl1vec; /* PTR to vector_base L1 entry*/ 64 uint32_t pcb_l1vec; /* Value to stuff on ctx sw */ 65 u_int pcb_dacr; /* Domain Access Control Reg */ 66 67 struct vfp_state pcb_vfpstate; /* VP/NEON state */ 68 u_int pcb_vfpcpu; /* VP/NEON last cpu */ 69 #define PCB_FP_STARTED 0x01 70 #define PCB_FP_KERN 0x02 71 #define PCB_FP_NOSAVE 0x04 72 struct vfp_state *pcb_vfpsaved; /* VP/NEON state */ 73 int pcb_fpflags; 74 } __aligned(8); /* 75 * We need the PCB to be aligned on 8 bytes, as we may 76 * access it using ldrd/strd, and ARM ABI require it 77 * to by aligned on 8 bytes. 78 */ 79 80 /* 81 * No additional data for core dumps. 82 */ 83 struct md_coredump { 84 int md_empty; 85 }; 86 87 void makectx(struct trapframe *tf, struct pcb *pcb); 88 89 #ifdef _KERNEL 90 91 void savectx(struct pcb *) __returns_twice; 92 #endif /* _KERNEL */ 93 94 #endif /* !_MACHINE_PCB_H_ */ 95