1 /*- 2 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 3 * Copyright (C) 1995, 1996 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by TooLs GmbH. 17 * 4. The name of TooLs GmbH may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: pcb.h,v 1.4 2000/06/04 11:57:17 tsubai Exp $ 32 * $FreeBSD$ 33 */ 34 35 #ifndef _MACHINE_PCB_H_ 36 #define _MACHINE_PCB_H_ 37 38 typedef register_t faultbuf[25]; 39 40 struct pcb { 41 register_t pcb_context[20]; /* non-volatile r14-r31 */ 42 register_t pcb_cr; /* Condition register */ 43 register_t pcb_sp; /* stack pointer */ 44 register_t pcb_toc; /* toc pointer */ 45 register_t pcb_lr; /* link register */ 46 struct pmap *pcb_pm; /* pmap of our vmspace */ 47 faultbuf *pcb_onfault; /* For use during 48 copyin/copyout */ 49 int pcb_flags; 50 #define PCB_FPU 1 /* Process uses FPU */ 51 #define PCB_FPREGS 2 /* Process had FPU registers initialized */ 52 #define PCB_VEC 4 /* Process had Altivec initialized */ 53 struct fpu { 54 double fpr[32]; 55 double fpscr; /* FPSCR stored as double for easier access */ 56 } pcb_fpu; /* Floating point processor */ 57 unsigned int pcb_fpcpu; /* which CPU had our FPU 58 stuff. */ 59 struct vec { 60 uint32_t vr[32][4]; 61 uint32_t spare[2]; 62 uint32_t vrsave; 63 uint32_t vscr; /* aligned at vector element 3 */ 64 } pcb_vec __aligned(16); /* Vector processor */ 65 unsigned int pcb_veccpu; /* which CPU had our vector 66 stuff. */ 67 68 union { 69 struct { 70 vm_offset_t usr_segm; /* Base address */ 71 register_t usr_vsid; /* USER_SR segment */ 72 } aim; 73 struct { 74 register_t dbcr0; 75 } booke; 76 } pcb_cpu; 77 }; 78 79 #ifdef _KERNEL 80 81 struct trapframe; 82 83 #ifndef curpcb 84 extern struct pcb *curpcb; 85 #endif 86 87 extern struct pmap *curpm; 88 extern struct proc *fpuproc; 89 90 void makectx(struct trapframe *, struct pcb *); 91 void savectx(struct pcb *) __returns_twice; 92 93 #endif 94 #endif /* _MACHINE_PCB_H_ */ 95