paging.cpp File Reference

#include "physm.h"
#include "paging.h"
#include "lowlevel.h"
#include "xnldr.h"
#include "xnout.h"

Include dependency graph for paging.cpp:

Classes
struct	mapping_table

Macros
#define	PAGING_PRESENT   0x1
#define	PAGING_WRITABLE   0x2
#define	PAGING_NOCACHE   0x10
#define	PAGING_XENEVA_NOSWAP   0x200
#define	PAGING_SIZEBIT   0x80
#define	PAGING_NXE   0x8000000000000000
#define	PAGE_ADDR_MASK   0x000ffffffffff000
#define	PAGING_USER   (1<<2)

Typedefs
typedef size_t	PD_ENTRY
typedef size_t	PTAB_ENTRY
typedef size_t	PDPT_ENTRY
typedef size_t	PML4_ENTRY
typedef size_t *(*	get_tab_ptr) (void *)
typedef size_t(*	get_tab_index) (void *)

Functions
void	identity_map_4kb (uint64_t logical)
void	XEInitialisePaging ()
bool	XEPagingMap_ (void *vaddr, paddr_t paddr, size_t attributes)
bool	check_free (int level, void *start_addr, void *end_addr)
bool	XEPagingMap (void *vaddr, paddr_t paddr, size_t length, size_t attributes)
void	set_paging_attributes (void *vaddr, size_t length, size_t attrset, size_t attrclear)
size_t	arch_get_recursive_slot ()
void *	arch_get_pml4ptr ()
void	fill_arch_paging_info (void *info)
bool	check_free (void *vaddr, size_t length)

Variables
void *	pdptr
void *	pml4ptr
size_t	recursive_slot
uint64_t	pml4e [512]

Macro Definition Documentation

PAGE_ADDR_MASK

#define PAGE_ADDR_MASK   0x000ffffffffff000

PAGING_NOCACHE

#define PAGING_NOCACHE   0x10

PAGING_NXE

#define PAGING_NXE   0x8000000000000000

PAGING_PRESENT

#define PAGING_PRESENT   0x1

PAGING_SIZEBIT

#define PAGING_SIZEBIT   0x80

PAGING_USER

#define PAGING_USER   (1<<2)

PAGING_WRITABLE

#define PAGING_WRITABLE   0x2

PAGING_XENEVA_NOSWAP

#define PAGING_XENEVA_NOSWAP   0x200

Typedef Documentation

get_tab_index

typedef size_t(* get_tab_index) (void *)

get_tab_ptr

typedef size_t *(* get_tab_ptr) (void *)

PD_ENTRY

typedef size_t PD_ENTRY

PDPT_ENTRY

typedef size_t PDPT_ENTRY

PML4_ENTRY

typedef size_t PML4_ENTRY

PTAB_ENTRY

typedef size_t PTAB_ENTRY

Function Documentation

arch_get_pml4ptr()

void * arch_get_pml4ptr

(

)

arch_get_recursive_slot()

size_t arch_get_recursive_slot

(

)

check_free() [1/2]

bool check_free	(	int	level,
		void *	start_addr,
		void *	end_addr
	)

check_free() [2/2]

bool check_free	(	void *	vaddr,
		size_t	length
	)

fill_arch_paging_info()

void fill_arch_paging_info

(

void *

info

)

identity_map_4kb()

void identity_map_4kb

(

uint64_t

logical

)

set_paging_attributes()

void set_paging_attributes	(	void *	vaddr,
		size_t	length,
		size_t	attrset,
		size_t	attrclear
	)

XEInitialisePaging()

void XEInitialisePaging

(

)

XEPagingMap()

bool XEPagingMap	(	void *	vaddr,
		paddr_t	paddr,
		size_t	length,
		size_t	attributes
	)

XEPagingMap_()

bool XEPagingMap_	(	void *	vaddr,
		paddr_t	paddr,
		size_t	attributes
	)

Variable Documentation

pdptr

void* pdptr

BSD 2-Clause License

Copyright (c) 2023-2025, Manas Kamal Choudhury 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.

pml4e

uint64_t pml4e[512]

pml4ptr

void* pml4ptr

recursive_slot

size_t recursive_slot