1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (C) 2002 Benno Rice. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30#ifndef _MACHINE_SR_H_ 31#define _MACHINE_SR_H_ 32 33/* 34 * Bit definitions for segment registers. 35 * 36 * PowerPC Microprocessor Family: The Programming Environments for 32-bit 37 * Microprocessors, section 2.3.5 38 */ 39 40#define SR_TYPE 0x80000000 /* Type selector */ 41#define SR_KS 0x40000000 /* Supervisor-state protection key */ 42#define SR_KP 0x20000000 /* User-state protection key */ 43#define SR_N 0x10000000 /* No-execute protection */ 44#define SR_VSID_MASK 0x00ffffff /* Virtual Segment ID mask */ 45 46/* Kernel segment register usage */ 47#define USER_SR 12 48#define KERNEL_SR 13 49#define KERNEL2_SR 14 50#define KERNEL3_SR 15 51#define KERNEL_VSIDBITS 0xfffffUL 52#define KERNEL_SEGMENT (0xfffff0 + KERNEL_SR) 53#define KERNEL2_SEGMENT (0xfffff0 + KERNEL2_SR) 54#define EMPTY_SEGMENT 0xfffff0 55#ifdef __powerpc64__ 56#define USER_ADDR 0xeffffffff0000000UL 57#else 58#define USER_ADDR ((uintptr_t)USER_SR << ADDR_SR_SHFT) 59#endif 60#define SEGMENT_LENGTH 0x10000000UL 61#define SEGMENT_INVMASK 0x0fffffffUL 62#define SEGMENT_MASK ~SEGMENT_INVMASK 63 64#endif /* !_MACHINE_SR_H_ */ 65