1 /*- 2 * Copyright (c) 2003 Peter Wemm. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91 34 * $FreeBSD$ 35 */ 36 37 #ifndef _AMD64_PCB_H_ 38 #define _AMD64_PCB_H_ 39 40 /* 41 * AMD64 process control block 42 */ 43 #include <machine/fpu.h> 44 #include <machine/segments.h> 45 46 struct pcb { 47 register_t pcb_cr3; 48 register_t pcb_r15; 49 register_t pcb_r14; 50 register_t pcb_r13; 51 register_t pcb_r12; 52 register_t pcb_rbp; 53 register_t pcb_rsp; 54 register_t pcb_rbx; 55 register_t pcb_rip; 56 register_t pcb_fsbase; 57 register_t pcb_gsbase; 58 u_long pcb_flags; 59 #define PCB_DBREGS 0x02 /* process using debug registers */ 60 #define PCB_KERNFPU 0x04 /* kernel uses fpu */ 61 #define PCB_FPUINITDONE 0x08 /* fpu state is initialized */ 62 #define PCB_USERFPUINITDONE 0x10 /* fpu user state is initialized */ 63 #define PCB_GS32BIT 0x20 /* linux gs switch */ 64 #define PCB_32BIT 0x40 /* process has 32 bit context (segs etc) */ 65 #define PCB_FULLCTX 0x80 /* full context restore on sysret */ 66 67 u_int64_t pcb_dr0; 68 u_int64_t pcb_dr1; 69 u_int64_t pcb_dr2; 70 u_int64_t pcb_dr3; 71 u_int64_t pcb_dr6; 72 u_int64_t pcb_dr7; 73 74 struct savefpu pcb_user_save; 75 uint16_t pcb_initial_fpucw; 76 77 caddr_t pcb_onfault; /* copyin/out fault recovery */ 78 79 /* 32-bit segment descriptor */ 80 struct user_segment_descriptor pcb_gs32sd; 81 /* local tss, with i/o bitmap; NULL for common */ 82 struct amd64tss *pcb_tssp; 83 struct savefpu *pcb_save; 84 char pcb_full_iret; 85 }; 86 87 struct xpcb { 88 struct pcb xpcb_pcb; 89 register_t xpcb_cr0; 90 register_t xpcb_cr2; 91 register_t xpcb_cr4; 92 register_t xpcb_kgsbase; 93 struct region_descriptor xpcb_gdt; 94 struct region_descriptor xpcb_idt; 95 struct region_descriptor xpcb_ldt; 96 uint16_t xpcb_tr; 97 }; 98 99 #ifdef _KERNEL 100 struct trapframe; 101 102 void makectx(struct trapframe *, struct pcb *); 103 void savectx(struct pcb *); 104 int savectx2(struct xpcb *); 105 #endif 106 107 #endif /* _AMD64_PCB_H_ */ 108