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 */ 35 36 #ifndef _MACHINE_PCB_H_ 37 #define _MACHINE_PCB_H_ 38 39 #include <sys/endian.h> 40 41 #include <machine/setjmp.h> 42 43 #ifndef _STANDALONE 44 struct pcb { 45 register_t pcb_context[20]; /* non-volatile r12-r31 */ 46 register_t pcb_cr; /* Condition register */ 47 register_t pcb_sp; /* stack pointer */ 48 register_t pcb_toc; /* toc pointer */ 49 register_t pcb_lr; /* link register */ 50 register_t pcb_dscr; /* dscr value */ 51 register_t pcb_fscr; 52 register_t pcb_tar; 53 struct pmap *pcb_pm; /* pmap of our vmspace */ 54 jmp_buf *pcb_onfault; /* For use during 55 copyin/copyout */ 56 int pcb_flags; 57 #define PCB_FPU 0x1 /* Process uses FPU */ 58 #define PCB_FPREGS 0x2 /* Process had FPU registers initialized */ 59 #define PCB_VEC 0x4 /* Process uses Altivec */ 60 #define PCB_VSX 0x8 /* Process had VSX initialized */ 61 #define PCB_CDSCR 0x10 /* Process had Custom DSCR initialized */ 62 #define PCB_HTM 0x20 /* Process had HTM initialized */ 63 #define PCB_CFSCR 0x40 /* Process had FSCR updated */ 64 #define PCB_KERN_FPU 0x80 /* Kernel is using FPU/Vector unit */ 65 #define PCB_KERN_FPU_NOSAVE 0x100 /* FPU/Vec state not saved for kernel use */ 66 #define PCB_VECREGS 0x200 /* Process had Altivec registers initialized */ 67 struct fpu { 68 union { 69 #if _BYTE_ORDER == _BIG_ENDIAN 70 double fpr; 71 uint32_t vsr[4]; 72 #else 73 uint32_t vsr[4]; 74 struct { 75 double padding; 76 double fpr; 77 }; 78 #endif 79 } fpr[32]; 80 double fpscr; /* FPSCR stored as double for easier access */ 81 } pcb_fpu; /* Floating point processor */ 82 unsigned int pcb_fpcpu; /* which CPU had our FPU 83 stuff. */ 84 struct vec { 85 uint32_t vr[32][4]; 86 uint32_t spare[2]; 87 uint32_t vrsave; 88 uint32_t vscr; /* aligned at vector element 3 */ 89 } pcb_vec __aligned(16); /* Vector processor */ 90 unsigned int pcb_veccpu; /* which CPU had our vector 91 stuff. */ 92 struct htm { 93 uint64_t tfhar; 94 uint64_t texasr; 95 uint64_t tfiar; 96 } pcb_htm; 97 98 struct ebb { 99 uint64_t ebbhr; 100 uint64_t ebbrr; 101 uint64_t bescr; 102 } pcb_ebb; 103 104 struct lmon { 105 uint64_t lmrr; 106 uint64_t lmser; 107 } pcb_lm; 108 109 union { 110 struct { 111 vm_offset_t usr_segm; /* Base address */ 112 register_t usr_vsid; /* USER_SR segment */ 113 } aim; 114 struct { 115 register_t dbcr0; 116 } booke; 117 } pcb_cpu; 118 vm_offset_t pcb_lastill; /* Last illegal instruction */ 119 }; 120 #endif 121 122 #ifdef _KERNEL 123 124 struct trapframe; 125 126 #ifndef curpcb 127 extern struct pcb *curpcb; 128 #endif 129 130 extern struct pmap *curpm; 131 extern struct proc *fpuproc; 132 133 void makectx(struct trapframe *, struct pcb *); 134 void savectx(struct pcb *) __returns_twice; 135 136 #endif 137 #endif /* _MACHINE_PCB_H_ */ 138