1 /* $NetBSD: pcb.h,v 1.35 2025/04/28 13:01:27 riastradh Exp $ */ 2 3 /* 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * William Jolitz. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)pcb.h 5.10 (Berkeley) 5/12/91 64 */ 65 66 /* 67 * XXXfvdl these copyrights don't really match anymore 68 */ 69 70 #ifndef _AMD64_PCB_H_ 71 #define _AMD64_PCB_H_ 72 73 #ifdef __x86_64__ 74 75 #include <x86/cpu_extended_state.h> 76 #include <amd64/reg.h> 77 78 #define NIOPORTS 1024 /* # of ports we allow to be mapped */ 79 80 /* 81 * IMPORTANT NOTE: this structure, including the variable-sized FPU state at 82 * the end, must fit within one page. 83 */ 84 struct pcb { 85 int pcb_flags; 86 #define PCB_COMPAT32 0x01 87 #define PCB_DBREGS 0x02 88 u_int pcb_cr0; /* saved image of CR0 */ 89 uint64_t pcb_rsp0; 90 uint64_t pcb_cr2; /* page fault address (CR2) */ 91 uint64_t pcb_cr3; 92 uint64_t pcb_rsp; 93 uint64_t pcb_rbp; 94 void *pcb_onfault; /* copyin/out fault recovery */ 95 uint64_t pcb_fs; 96 uint64_t pcb_gs; 97 struct dbreg *pcb_dbregs; 98 uint16_t pcb_fpu_dflt_cw; 99 int pcb_iopl; 100 #ifdef XENPV /* XXX XENPV PR kern/59371 */ 101 uint32_t pcb_unused[8]; /* unused */ 102 union savefpu pcb_savefpu[1] __aligned(64); 103 #define pcb_savefpusmall pcb_savefpu 104 #else 105 union savefpu *pcb_savefpu; 106 107 uint32_t pcb_unused[6]; /* unused */ 108 109 /* fpu state, if it fits; otherwise allocated separately */ 110 union savefpu pcb_savefpusmall __aligned(64); 111 #endif 112 /* **** DO NOT ADD ANYTHING HERE **** */ 113 }; 114 #ifndef __lint__ 115 #include <sys/stddef.h> /* for offsetof() */ 116 117 __CTASSERT(offsetof(struct pcb, pcb_savefpusmall) == 128); 118 __CTASSERT(sizeof(struct pcb) - sizeof (union savefpu) == 128); 119 #endif 120 121 #else /* __x86_64__ */ 122 123 #include <i386/pcb.h> 124 125 #endif /* __x86_64__ */ 126 127 #endif /* _AMD64_PCB_H_ */ 128