/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.vm.x86;
import org.jnode.annotation.MagicPermission;
import org.jnode.vm.VirtualMemoryRegion;
import org.jnode.vm.classmgr.VmIsolatedStatics;
import org.jnode.vm.classmgr.VmSharedStatics;
import org.jnode.vm.compiler.IMTCompiler;
import org.jnode.vm.facade.TypeSizeInfo;
import org.jnode.vm.scheduler.VmProcessor;
import org.jnode.vm.scheduler.VmScheduler;
import org.jnode.vm.x86.compiler.X86IMTCompiler64;
import org.vmmagic.pragma.UninterruptiblePragma;
import org.vmmagic.unboxed.Address;
import org.vmmagic.unboxed.Extent;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
@MagicPermission
public final class VmX86Architecture64 extends VmX86Architecture {
/**
* Start address of the virtual memory region available to devices (3Gb)
*/
public static final int DEVICE_START = 0xC0000000;
/**
* End address of the virtual memory region available to devices (4Gb-4Mb)
*/
public static final int DEVICE_END = 0xFFC00000;
/**
* Start address of the virtual memory region available to ACPI (3Gb - 4Mb)
*/
public static final int ACPI_START = DEVICE_START - 0x400000;
/**
* Start address of the virtual memory region available to ACPI (3Gb)
*/
public static final int ACPI_END = DEVICE_START;
/**
* Start address of the virtual memory region available to the memory manager (4Gb).
* This address must be 4Mb aligned.
*/
public static final long AVAILABLE_START = 0x0000000100000000L;
/**
* End address of the virtual memory region available to the memory manager (8Gb)
* This address must be 4Mb aligned.
*/
public static final long AVAILABLE_END = 0x0000000200000000L;
/**
* Size of an object reference
*/
public static final int SLOT_SIZE = 8;
/**
* The IMT compiler
*/
private final X86IMTCompiler64 imtCompiler;
/**
* The type size information
*/
private final TypeSizeInfo typeSizeInfo;
/**
* Initialize this instance.
*/
public VmX86Architecture64() {
this("L1A");
}
/**
* Initialize this instance.
*
* @param compiler
*/
public VmX86Architecture64(String compiler) {
super(SLOT_SIZE, compiler);
this.imtCompiler = new X86IMTCompiler64();
this.typeSizeInfo = new TypeSizeInfo(1, 1, 2, 2, 1);
}
public final VmProcessor createProcessor(int id, VmSharedStatics sharedStatics, VmIsolatedStatics isolatedStatics,
VmScheduler scheduler) {
return new VmX86Processor64(id, this, sharedStatics, isolatedStatics, scheduler, null);
}
public final IMTCompiler getIMTCompiler() {
return imtCompiler;
}
public final TypeSizeInfo getTypeSizeInfo() {
return typeSizeInfo;
}
public final byte getLogPageSize(int region) {
return 22; // 4Mb
}
public Address getEnd(int space) {
switch (space) {
case VirtualMemoryRegion.HEAP:
return Address.fromLong(AVAILABLE_END);
case VirtualMemoryRegion.AVAILABLE:
return Address.fromLong(AVAILABLE_END);
case VirtualMemoryRegion.DEVICE:
return Address.fromIntZeroExtend(DEVICE_END);
case VirtualMemoryRegion.ACPI:
return Address.fromIntZeroExtend(ACPI_END);
default:
return super.getEnd(space);
}
}
public Address getStart(int space) {
switch (space) {
case VirtualMemoryRegion.HEAP:
return Address.fromIntZeroExtend(BOOT_IMAGE_START);
case VirtualMemoryRegion.AVAILABLE:
return Address.fromLong(AVAILABLE_START);
case VirtualMemoryRegion.DEVICE:
return Address.fromIntZeroExtend(DEVICE_START);
case VirtualMemoryRegion.ACPI:
return Address.fromIntZeroExtend(ACPI_START);
default:
return super.getStart(space);
}
}
/**
* Map a region of the virtual memory space. Note that you cannot allocate
* memory in this memory, because it is used very early in the boot process.
*
* @param space Memory region
* @param start The start of the virtual memory region to map
* @param size The size of the virtual memory region to map
* @param physAddr The physical address to map the virtual address to. If this is
* Address.max(), free pages are used instead.
* @return true for success, false otherwise.
*/
public final boolean mmap(int space, Address start, Extent size, Address physAddr)
throws UninterruptiblePragma {
// FIXME ... unimplemented
if (space != VirtualMemoryRegion.HEAP) {
return false;
}
return false;
}
/**
* Unmap a region of the virtual memory space. Note that you cannot allocate
* memory in this memory, because it is used very early in the boot process.
*
* @param space Memory region
* @param start The start of the virtual memory region to unmap. This value is
* aligned down on pagesize.
* @param size The size of the virtual memory region to unmap. This value is
* aligned up on pagesize.
* @return true for success, false otherwise.
*/
public boolean munmap(int space, Address start, Extent size)
throws UninterruptiblePragma {
// FIXME ... unimplemented
return false;
}
protected void boot(boolean emptyMMap) {
dumpMultibootMMap();
}
}