/* vmBaseArch36Lib.c - VM (bundled) library for PentiumPro/2/3/4 36 bit mode *//* Copyright 2002 Wind River Systems, Inc. */#include "copyright_wrs.h"/*modification history--------------------01a,12jun02,hdn  written*//*DESCRIPTION:vmBaseArch36Lib.c provides the virtual memory mapping and virtual addresstranslation that works with the bundled VM library.It provides 2 routines that are linked in when INCLUDE_MMU_BASIC and INCLUDE_MMU_P6_36BIT are both defined in the BSP.*//* includes */#include "vxWorks.h"#include "errno.h"#include "mmuLib.h"#include "private/vmLibP.h"#include "arch/i86/mmuPro36Lib.h"/* imports */IMPORT VM_CONTEXT *	currentContext;		/* vmBaseLib.c *//* defines */#define NOT_PAGE_ALIGNED(addr)  (((UINT)(addr)) & ((UINT)pageSize - 1))#define MMU_PAGE_MAP		(mmuPro36PageMap)#define MMU_TRANSLATE		(mmuPro36Translate)/****************************************************************************** vmBaseArch36LibInit - initialize the arch specific bundled VM library** This routine links the arch specific bundled VM library into the VxWorks * system.  It is called automatically when \%INCLUDE_MMU_BASIC and * \%INCLUDE_MMU_P6_36BIT are both defined in the BSP.** RETURNS: N/A*/void vmBaseArch36LibInit (void)    {    } /****************************************************************************** vmBaseArch36Map - map 36bit physical to the 32bit virtual memory** vmBaseArch36Map maps 36bit physical pages to 32bit virtual space then* sets the specified state.** RETURNS: OK, or ERROR if virtAddr or physical page addresses are not on* page boundaries, len is not a multiple of page size, or mapping failed.*/STATUS vmBaseArch36Map     (    void * virtAddr, 		/* 32bit virtual address */    LL_INT physAddr, 		/* 36bit physical address */    UINT32 stateMask,		/* state mask */    UINT32 state,		/* state */    UINT32 len			/* length */    )    {    INT32 pageSize      = vmBasePageSizeGet ();    INT8 * thisVirtPage = (INT8 *) virtAddr;    LL_INT thisPhysPage = physAddr;    FAST UINT32 numBytesProcessed = 0;    STATUS retVal       = OK;    if (!vmLibInfo.vmBaseLibInstalled)	return (ERROR);    if ((NOT_PAGE_ALIGNED (thisVirtPage)) ||        (NOT_PAGE_ALIGNED (thisPhysPage)) ||        (NOT_PAGE_ALIGNED (len)))	{	errno = S_vmLib_NOT_PAGE_ALIGNED;        return (ERROR); 	}    semTake (&currentContext->sem, WAIT_FOREVER);    while (numBytesProcessed < len)	{	if (MMU_PAGE_MAP (currentContext->mmuTransTbl,			  thisVirtPage, thisPhysPage) != OK)	    {	    retVal = ERROR;	    break;	    }	if (vmBaseStateSet (currentContext, thisVirtPage,			    pageSize, stateMask, state) != OK)	    {	    retVal = ERROR;	    break;	    }	thisVirtPage += pageSize;	thisPhysPage += pageSize;	numBytesProcessed += pageSize;	}    semGive (&currentContext->sem);    return (retVal);    }/****************************************************************************** vmBaseArch36Translate - translate a 32bit virtual address to a 36bit physical address** vmBaseArch36Translate may be used to retrieve the mapping information * for a virtual address from the page translation tables.  If the given * virtual address has never been mapped, either the returned status will* be ERROR, or, the returned status will be OK, but the returned physical* address will be -1.* If context is specified as NULL, the current context is used.* This routine is callable from interrupt level.** RETURNS: OK, or validation failed, or translation failed.*/STATUS vmBaseArch36Translate     (    void *  virtAddr, 		/* 32bit virtual address */    LL_INT * physAddr		/* place to put 36bit result */    )    {    STATUS retVal;    if (!vmLibInfo.vmBaseLibInstalled)	return (ERROR);    retVal = MMU_TRANSLATE (currentContext->mmuTransTbl, virtAddr, physAddr);    return (retVal);    }