1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 28 #ifndef _MACHINE_SR_H_ 29 #define _MACHINE_SR_H_ 30 31 /* 32 * Bit definitions for segment registers. 33 * 34 * PowerPC Microprocessor Family: The Programming Environments for 32-bit 35 * Microprocessors, section 2.3.5 36 */ 37 38 #define SR_TYPE 0x80000000 /* Type selector */ 39 #define SR_KS 0x40000000 /* Supervisor-state protection key */ 40 #define SR_KP 0x20000000 /* User-state protection key */ 41 #define SR_N 0x10000000 /* No-execute protection */ 42 #define SR_VSID_MASK 0x00ffffff /* Virtual Segment ID mask */ 43 44 /* Kernel segment register usage */ 45 #define USER_SR 12 46 #define KERNEL_SR 13 47 #define KERNEL2_SR 14 48 #define KERNEL3_SR 15 49 #define KERNEL_VSIDBITS 0xfffffUL 50 #define KERNEL_SEGMENT (0xfffff0 + KERNEL_SR) 51 #define KERNEL2_SEGMENT (0xfffff0 + KERNEL2_SR) 52 #define EMPTY_SEGMENT 0xfffff0 53 #ifdef __powerpc64__ 54 #define USER_ADDR 0xc00ffffff0000000UL 55 #else 56 #define USER_ADDR ((uintptr_t)USER_SR << ADDR_SR_SHFT) 57 #endif 58 #define SEGMENT_LENGTH 0x10000000UL 59 #define SEGMENT_INVMASK 0x0fffffffUL 60 #define SEGMENT_MASK ~SEGMENT_INVMASK 61 62 #endif /* !_MACHINE_SR_H_ */ 63