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/*- * 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. * * $FreeBSD: release/9.1.0/sys/powerpc/include/sr.h 214574 2010-10-30 23:07:30Z nwhitehorn $ */ #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 0xcffffffff0000000UL #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_ */