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 r14-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 struct pmap *pcb_pm; /* pmap of our vmspace */ 50 jmp_buf *pcb_onfault; /* For use during 51 copyin/copyout */ 52 int pcb_flags; 53 #define PCB_FPU 1 /* Process uses FPU */ 54 #define PCB_FPREGS 2 /* Process had FPU registers initialized */ 55 #define PCB_VEC 4 /* Process had Altivec initialized */ 56 #define PCB_VSX 8 /* Process had VSX initialized */ 57 struct fpu { 58 union { 59 double fpr; 60 uint32_t vsr[4]; 61 } fpr[32]; 62 double fpscr; /* FPSCR stored as double for easier access */ 63 } pcb_fpu; /* Floating point processor */ 64 unsigned int pcb_fpcpu; /* which CPU had our FPU 65 stuff. */ 66 struct vec { 67 uint32_t vr[32][4]; 68 uint32_t spare[2]; 69 uint32_t vrsave; 70 uint32_t vscr; /* aligned at vector element 3 */ 71 } pcb_vec __aligned(16); /* Vector processor */ 72 unsigned int pcb_veccpu; /* which CPU had our vector 73 stuff. */ 74 75 union { 76 struct { 77 vm_offset_t usr_segm; /* Base address */ 78 register_t usr_vsid; /* USER_SR segment */ 79 } aim; 80 struct { 81 register_t dbcr0; 82 } booke; 83 } pcb_cpu; 84 }; 85 #endif 86 87 #ifdef _KERNEL 88 89 struct trapframe; 90 91 #ifndef curpcb 92 extern struct pcb *curpcb; 93 #endif 94 95 extern struct pmap *curpm; 96 extern struct proc *fpuproc; 97 98 void makectx(struct trapframe *, struct pcb *); 99 void savectx(struct pcb *) __returns_twice; 100 101 #endif 102 #endif /* _MACHINE_PCB_H_ */ 103