1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * Copyright (c) 2003 Peter Wemm. 4 * Copyright (c) 2008 The DragonFly Project. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91 35 * $FreeBSD: src/sys/amd64/include/pcb.h,v 1.57 2004/01/28 23:54:31 peter Exp $ 36 * $DragonFly: src/sys/platform/pc64/include/pcb.h,v 1.3 2008/08/29 17:07:17 dillon Exp $ 37 */ 38 39 #ifndef _MACHINE_PCB_H_ 40 #define _MACHINE_PCB_H_ 41 42 /* 43 * x86_64 process control block 44 * 45 * WARNING! union savefpu has a 64-byte alignment requirement built-in 46 * which will adjust the size of this structure. 47 */ 48 #include <machine/npx.h> 49 50 struct pcb { 51 register_t padxx[7]; 52 register_t pcb_cr3_iso; /* isolated U (+minimal K) PML4e */ 53 register_t pcb_cr3; /* U+K PML4e */ 54 register_t pcb_r15; 55 register_t pcb_r14; 56 register_t pcb_r13; 57 register_t pcb_r12; 58 register_t pcb_rbp; 59 register_t pcb_rsp; 60 register_t pcb_rbx; 61 register_t pcb_rip; 62 register_t pcb_rsi; 63 register_t pcb_rdi; 64 register_t pcb_rflags; 65 register_t pcb_fsbase; 66 register_t pcb_gsbase; 67 u_long pcb_flags; 68 u_int32_t pcb_ds; 69 u_int32_t pcb_es; 70 u_int32_t pcb_fs; 71 u_int32_t pcb_gs; 72 u_int64_t pcb_dr0; 73 u_int64_t pcb_dr1; 74 u_int64_t pcb_dr2; 75 u_int64_t pcb_dr3; 76 u_int64_t pcb_dr6; 77 u_int64_t pcb_dr7; 78 79 struct pcb_ldt *pcb_ldt; 80 union savefpu pcb_save; 81 caddr_t pcb_onfault; /* copyin/out fault recovery */ 82 register_t pcb_onfault_sp; /* validate onfault */ 83 register_t pcb_unused[4]; /* kgdb compatibility expansion */ 84 struct pcb_ext *pcb_ext; /* optional pcb extension */ 85 }; 86 87 #define PCB_DBREGS 0x00000002 /* process using debug registers */ 88 #define PCB_FPUINITDONE 0x00000008 /* fpu state is initialized */ 89 #define PCB_ISOMMU 0x00000010 /* MMU isolation */ 90 91 #define FP_SOFTFP 0x01 /* process using soft flt emulator */ 92 #define FP_VIRTFP 0x04 /* vkernel wants exception */ 93 94 #define SPEC_CTRL_DUMMY_IBPB SPEC_CTRL_DUMMY1 95 #define SPEC_CTRL_DUMMY_ENABLE SPEC_CTRL_DUMMY2 96 #define SPEC_CTRL_MDS_ENABLE SPEC_CTRL_DUMMY3 97 98 #ifdef _KERNEL 99 void savectx(struct pcb *); 100 #endif 101 102 #endif /* _MACHINE_PCB_H_ */ 103