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
44struct 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 uint32_t vsr[4];
70 double fpr;
71 } fpr[32];
72 double fpscr; /* FPSCR stored as double for easier access */
73 } pcb_fpu; /* Floating point processor */
74 unsigned int pcb_fpcpu; /* which CPU had our FPU
75 stuff. */
76 struct vec {
77 uint32_t vr[32][4];
78 uint32_t spare[2];
79 uint32_t vrsave;
80 uint32_t vscr; /* aligned at vector element 3 */
81 } pcb_vec __aligned(16); /* Vector processor */
82 unsigned int pcb_veccpu; /* which CPU had our vector
83 stuff. */
84 struct htm {
85 uint64_t tfhar;
86 uint64_t texasr;
87 uint64_t tfiar;
88 } pcb_htm;
89
90 struct ebb {
91 uint64_t ebbhr;
92 uint64_t ebbrr;
93 uint64_t bescr;
94 } pcb_ebb;
95
96 struct lmon {
97 uint64_t lmrr;
98 uint64_t lmser;
99 } pcb_lm;
100
101 union {
102 struct {
103 vm_offset_t usr_segm; /* Base address */
104 register_t usr_vsid; /* USER_SR segment */
105 } aim;
106 struct {
107 register_t dbcr0;
108 } booke;
109 } pcb_cpu;
110 vm_offset_t pcb_lastill; /* Last illegal instruction */
111};
112#endif
113
114#ifdef _KERNEL
115
116struct trapframe;
117
118#ifndef curpcb
119extern struct pcb *curpcb;
120#endif
121
122extern struct pmap *curpm;
123extern struct proc *fpuproc;
124
125void makectx(struct trapframe *, struct pcb *);
126void savectx(struct pcb *) __returns_twice;
127
128#endif
129#endif /* _MACHINE_PCB_H_ */