Annotation of sys/arch/vax/include/pte.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pte.h,v 1.10 2006/07/25 21:05:31 miod Exp $ */
! 2: /* $NetBSD: pte.h,v 1.21 2005/12/24 22:45:40 perry Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
! 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 at Ludd, University of Lule}.
! 19: * 4. The name of the author 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 THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: */
! 33:
! 34: #ifndef _VAX_PTE_H_
! 35: #define _VAX_PTE_H_
! 36:
! 37: #ifndef _LOCORE
! 38:
! 39: typedef u_int32_t pt_entry_t; /* Mach page table entry */
! 40:
! 41: #endif /* _LOCORE */
! 42:
! 43: #define PT_ENTRY_NULL ((pt_entry_t *) 0)
! 44:
! 45: #define PG_V 0x80000000
! 46: #define PG_NV 0x00000000
! 47: #define PG_PROT 0x78000000
! 48: #define PG_RW 0x20000000
! 49: #define PG_KW 0x10000000
! 50: #define PG_KR 0x18000000
! 51: #define PG_URKW 0x70000000
! 52: #define PG_RO 0x78000000
! 53: #define PG_NONE 0x00000000
! 54: #define PG_M 0x04000000
! 55: #define PG_W 0x01000000
! 56: #define PG_SREF 0x00800000
! 57: #define PG_ILLEGAL 0x00600000
! 58: #define PG_FRAME 0x001fffff
! 59: #define PG_PFNUM(x) (((unsigned long)(x) & 0x3ffffe00) >> VAX_PGSHIFT)
! 60:
! 61: #ifndef _LOCORE
! 62: extern pt_entry_t *Sysmap;
! 63: /*
! 64: * Kernel virtual address to page table entry and to physical address.
! 65: */
! 66: #endif
! 67:
! 68: #ifdef __ELF__
! 69: #define VAX_SYSMAP "Sysmap"
! 70: #else
! 71: #define VAX_SYSMAP "_Sysmap"
! 72: #endif
! 73:
! 74: #ifdef __GNUC__
! 75: #define kvtopte(va) ({ \
! 76: pt_entry_t *r; \
! 77: __asm("extzv $9,$21,%1,%0;moval *" VAX_SYSMAP "[%0],%0" : "=r"(r) : "g"(va)); \
! 78: r; \
! 79: })
! 80: #define kvtophys(va) ({ \
! 81: paddr_t r; \
! 82: __asm("extzv $9,$21,%1,%0;ashl $9,*" VAX_SYSMAP "[%0],%0;insv %1,$0,$9,%0" \
! 83: : "=&r"(r) : "g"(va) : "cc"); \
! 84: r; \
! 85: })
! 86: #else /* __GNUC__ */
! 87: #define kvtopte(va) (&Sysmap[PG_PFNUM(va)])
! 88: #define kvtophys(va) \
! 89: (((*kvtopte(va) & PG_FRAME) << VAX_PGSHIFT) | ((int)(va) & VAX_PGOFSET))
! 90: #endif /* __GNUC__ */
! 91: #define uvtopte(va, pcb) \
! 92: (((vaddr_t)(va) < 0x40000000) ? \
! 93: &(((pcb)->P0BR)[PG_PFNUM(va)]) : \
! 94: &(((pcb)->P1BR)[PG_PFNUM(va)]))
! 95:
! 96: #endif
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