mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-21 10:19:04 +00:00
63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (C) 2002 Benno Rice.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _MACHINE_SR_H_
|
|
#define _MACHINE_SR_H_
|
|
|
|
/*
|
|
* Bit definitions for segment registers.
|
|
*
|
|
* PowerPC Microprocessor Family: The Programming Environments for 32-bit
|
|
* Microprocessors, section 2.3.5
|
|
*/
|
|
|
|
#define SR_TYPE 0x80000000 /* Type selector */
|
|
#define SR_KS 0x40000000 /* Supervisor-state protection key */
|
|
#define SR_KP 0x20000000 /* User-state protection key */
|
|
#define SR_N 0x10000000 /* No-execute protection */
|
|
#define SR_VSID_MASK 0x00ffffff /* Virtual Segment ID mask */
|
|
|
|
/* Kernel segment register usage */
|
|
#define USER_SR 12
|
|
#define KERNEL_SR 13
|
|
#define KERNEL2_SR 14
|
|
#define KERNEL3_SR 15
|
|
#define KERNEL_VSIDBITS 0xfffffUL
|
|
#define KERNEL_SEGMENT (0xfffff0 + KERNEL_SR)
|
|
#define KERNEL2_SEGMENT (0xfffff0 + KERNEL2_SR)
|
|
#define EMPTY_SEGMENT 0xfffff0
|
|
#ifdef __powerpc64__
|
|
#define USER_ADDR 0xc00ffffff0000000UL
|
|
#else
|
|
#define USER_ADDR ((uintptr_t)USER_SR << ADDR_SR_SHFT)
|
|
#endif
|
|
#define SEGMENT_LENGTH 0x10000000UL
|
|
#define SEGMENT_INVMASK 0x0fffffffUL
|
|
#define SEGMENT_MASK ~SEGMENT_INVMASK
|
|
|
|
#endif /* !_MACHINE_SR_H_ */
|