pcb.h revision 1.14
1/* $NetBSD: pcb.h,v 1.14 2007/03/04 05:59:37 christos 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 36#ifndef _ARM_PCB_H_ 37#define _ARM_PCB_H_ 38 39#include <machine/frame.h> 40#include <machine/fp.h> 41 42#include <arm/arm32/pte.h> 43 44struct trapframe; 45 46struct pcb_arm32 { 47 paddr_t pcb32_pagedir; /* PT hooks */ 48 pd_entry_t *pcb32_pl1vec; /* PTR to vector_base L1 entry*/ 49 pd_entry_t pcb32_l1vec; /* Value to stuff on ctx sw */ 50 u_int pcb32_dacr; /* Domain Access Control Reg */ 51 void *pcb32_cstate; /* &pmap->pm_cstate */ 52 /* 53 * WARNING! 54 * cpuswitch.S relies on pcb32_r8 being quad-aligned in struct pcb 55 * (due to the use of "strd" when compiled for XSCALE) 56 */ 57 u_int pcb32_r8; /* used */ 58 u_int pcb32_r9; /* used */ 59 u_int pcb32_r10; /* used */ 60 u_int pcb32_r11; /* used */ 61 u_int pcb32_r12; /* used */ 62 u_int pcb32_sp; /* used */ 63 u_int pcb32_lr; 64 u_int pcb32_pc; 65 u_int pcb32_und_sp; 66}; 67#define pcb_pagedir pcb_un.un_32.pcb32_pagedir 68#define pcb_pl1vec pcb_un.un_32.pcb32_pl1vec 69#define pcb_l1vec pcb_un.un_32.pcb32_l1vec 70#define pcb_dacr pcb_un.un_32.pcb32_dacr 71#define pcb_cstate pcb_un.un_32.pcb32_cstate 72 73struct pcb_arm26 { 74 struct switchframe *pcb26_sf; 75}; 76#define pcb_sf pcb_un.un_26.pcb26_sf 77 78/* 79 * WARNING! 80 * See warning for struct pcb_arm32, above, before changing struct pcb! 81 */ 82struct pcb { 83 u_int pcb_flags; 84#define PCB_OWNFPU 0x00000001 85#define PCB_NOALIGNFLT 0x00000002 /* For EXEC_AOUT */ 86 struct trapframe *pcb_tf; 87 void * pcb_onfault; /* On fault handler */ 88 union { 89 struct pcb_arm32 un_32; 90 struct pcb_arm26 un_26; 91 } pcb_un; 92 struct fpe_sp_state pcb_fpstate; /* Floating Point state */ 93}; 94#define pcb_ff pcb_fpstate /* for arm26 */ 95 96/* 97 * No additional data for core dumps. 98 */ 99struct md_coredump { 100 int md_empty; 101}; 102 103#ifdef _KERNEL 104#ifdef _KERNEL_OPT 105#include "opt_multiprocessor.h" 106#endif 107#ifdef MULTIPROCESSOR 108#define curpcb (curcpu()->ci_curpcb) 109#else 110extern struct pcb *curpcb; 111#endif 112#endif /* _KERNEL */ 113 114#endif /* _ARM_PCB_H_ */ 115