pcb.h (3315B) - Raw
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 38 #ifndef _MACHINE_PCB_H_ 39 #define _MACHINE_PCB_H_ 40 41 #include <machine/frame.h> 42 #include <machine/vfp.h> 43 44 /* 45 * WARNING! 46 * Keep pcb_regs first for faster access in switch.S 47 */ 48 struct pcb { 49 struct switchframe pcb_regs; /* CPU state */ 50 u_int pcb_flags; 51 #define PCB_OWNFPU 0x00000001 52 #define PCB_NOALIGNFLT 0x00000002 53 caddr_t pcb_onfault; /* On fault handler */ 54 vm_offset_t pcb_pagedir; /* TTB0 value */ 55 /* 56 * XXX: 57 * Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely 58 * by old PMAP. Keep them here for PCB binary compatibility 59 * between old and new PMAP. 60 */ 61 uint32_t *pcb_pl1vec; /* PTR to vector_base L1 entry*/ 62 uint32_t pcb_l1vec; /* Value to stuff on ctx sw */ 63 u_int pcb_dacr; /* Domain Access Control Reg */ 64 65 struct vfp_state pcb_vfpstate; /* VP/NEON state */ 66 u_int pcb_vfpcpu; /* VP/NEON last cpu */ 67 #define PCB_FP_STARTED 0x01 68 #define PCB_FP_KERN 0x02 69 #define PCB_FP_NOSAVE 0x04 70 struct vfp_state *pcb_vfpsaved; /* VP/NEON state */ 71 int pcb_fpflags; 72 } __aligned(8); /* 73 * We need the PCB to be aligned on 8 bytes, as we may 74 * access it using ldrd/strd, and ARM ABI require it 75 * to by aligned on 8 bytes. 76 */ 77 78 /* 79 * No additional data for core dumps. 80 */ 81 struct md_coredump { 82 int md_empty; 83 }; 84 85 void makectx(struct trapframe *tf, struct pcb *pcb); 86 87 #ifdef _KERNEL 88 89 void savectx(struct pcb *) __returns_twice; 90 #endif /* _KERNEL */ 91 92 #endif /* !_MACHINE_PCB_H_ */