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/* $Id: kHlpPage-iprt.cpp $ */
/** @file
* kHlpPage - Page Memory Allocation, IPRT based implementation.
*/
/*
* Copyright (C) 2007-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <k/kHlpAlloc.h>
#include <k/kErrors.h>
#include <iprt/mem.h>
#include <iprt/assert.h>
#include <iprt/err.h>
static unsigned kHlpPageProtToNative(KPROT enmProt)
{
switch (enmProt)
{
case KPROT_NOACCESS: return RTMEM_PROT_NONE;
case KPROT_READONLY: return RTMEM_PROT_READ;
case KPROT_READWRITE: return RTMEM_PROT_READ | RTMEM_PROT_WRITE;
case KPROT_EXECUTE: return RTMEM_PROT_EXEC;
case KPROT_EXECUTE_READ: return RTMEM_PROT_EXEC | RTMEM_PROT_READ;
case KPROT_EXECUTE_READWRITE: return RTMEM_PROT_EXEC | RTMEM_PROT_READ | RTMEM_PROT_WRITE;
default:
AssertFailed();
return ~0U;
}
}
KHLP_DECL(int) kHlpPageAlloc(void **ppv, KSIZE cb, KPROT enmProt, KBOOL fFixed)
{
AssertReturn(fFixed, KERR_NOT_IMPLEMENTED);
int rc = VINF_SUCCESS;
void *pv = RTMemPageAlloc(cb);
if (pv)
{
rc = RTMemProtect(pv, cb, kHlpPageProtToNative(enmProt));
if (RT_SUCCESS(rc))
*ppv = pv;
else
RTMemPageFree(pv, cb);
}
return rc;
}
KHLP_DECL(int) kHlpPageProtect(void *pv, KSIZE cb, KPROT enmProt)
{
int rc = RTMemProtect(pv, cb, kHlpPageProtToNative(enmProt));
if (!rc)
return 0;
/** @todo convert iprt status code -> kErrors */
return rc;
}
KHLP_DECL(int) kHlpPageFree(void *pv, KSIZE cb)
{
RTMemPageFree(pv, cb);
return 0;
}
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