1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 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 TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $NetBSD: pcb.h,v 1.4 2000/06/04 11:57:17 tsubai Exp $ 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_PCB_H_ 38 #define _MACHINE_PCB_H_ 39 40 #include <machine/setjmp.h> 41 42 #ifndef _STANDALONE 43 struct pcb { 44 register_t pcb_context[20]; /* non-volatile r12-r31 */ 45 register_t pcb_cr; /* Condition register */ 46 register_t pcb_sp; /* stack pointer */ 47 register_t pcb_toc; /* toc pointer */ 48 register_t pcb_lr; /* link register */ 49 register_t pcb_dscr; /* dscr value */ 50 register_t pcb_fscr; 51 register_t pcb_tar; 52 struct pmap *pcb_pm; /* pmap of our vmspace */ 53 jmp_buf *pcb_onfault; /* For use during 54 copyin/copyout */ 55 int pcb_flags; 56 #define PCB_FPU 0x1 /* Process uses FPU */ 57 #define PCB_FPREGS 0x2 /* Process had FPU registers initialized */ 58 #define PCB_VEC 0x4 /* Process had Altivec initialized */ 59 #define PCB_VSX 0x8 /* Process had VSX initialized */ 60 #define PCB_CDSCR 0x10 /* Process had Custom DSCR initialized */ 61 #define PCB_HTM 0x20 /* Process had HTM initialized */ 62 #define PCB_CFSCR 0x40 /* Process had FSCR updated */ 63 struct fpu { 64 union { 65 double fpr; 66 uint32_t vsr[4]; 67 } fpr[32]; 68 double fpscr; /* FPSCR stored as double for easier access */ 69 } pcb_fpu; /* Floating point processor */ 70 unsigned int pcb_fpcpu; /* which CPU had our FPU 71 stuff. */ 72 struct vec { 73 uint32_t vr[32][4]; 74 uint32_t spare[2]; 75 uint32_t vrsave; 76 uint32_t vscr; /* aligned at vector element 3 */ 77 } pcb_vec __aligned(16); /* Vector processor */ 78 unsigned int pcb_veccpu; /* which CPU had our vector 79 stuff. */ 80 struct htm { 81 uint64_t tfhar; 82 uint64_t texasr; 83 uint64_t tfiar; 84 } pcb_htm; 85 86 struct ebb { 87 uint64_t ebbhr; 88 uint64_t ebbrr; 89 uint64_t bescr; 90 } pcb_ebb; 91 92 struct lmon { 93 uint64_t lmrr; 94 uint64_t lmser; 95 } pcb_lm; 96 97 union { 98 struct { 99 vm_offset_t usr_segm; /* Base address */ 100 register_t usr_vsid; /* USER_SR segment */ 101 } aim; 102 struct { 103 register_t dbcr0; 104 } booke; 105 } pcb_cpu; 106 vm_offset_t pcb_lastill; /* Last illegal instruction */ 107 }; 108 #endif 109 110 #ifdef _KERNEL 111 112 struct trapframe; 113 114 #ifndef curpcb 115 extern struct pcb *curpcb; 116 #endif 117 118 extern struct pmap *curpm; 119 extern struct proc *fpuproc; 120 121 void makectx(struct trapframe *, struct pcb *); 122 void savectx(struct pcb *) __returns_twice; 123 124 #endif 125 #endif /* _MACHINE_PCB_H_ */ 126