paging.64.c File Reference

Paging implementation for x86_64 architecture. More...

#include <types.h>
#include <memory.h>
#include <memory/frame.h>
#include <memory/paging.h>
#include <cpu.h>
#include <cpu/crx.h>
#include <systeminfo.h>
#include <logging.h>
#include <linker.h>
#include <cpu/descriptor.h>
#include <hashmap.h>

Functions
	MODULE ("turnstone.kernel.memory.paging")
uint64_t	memory_paging_get_internal_frame (memory_page_table_context_t *table_context)
static void	memory_paging_internal_frame_build (memory_page_table_context_t *table_context)
memory_page_table_context_t *	memory_paging_switch_table (const memory_page_table_context_t *new_table)
	switches p4 page table More...
int8_t	memory_paging_add_page_ext (memory_page_table_context_t *table_context, uint64_t virtual_address, uint64_t frame_address, memory_paging_page_type_t type)
	creates virtual address frame mapping with adding page More...
int8_t	memory_paging_reserve_current_page_table_frames (void)
memory_page_table_context_t *	memory_paging_build_empty_table (uint64_t internal_frame_address)
int8_t	memory_paging_clear_page_ext (memory_page_table_context_t *table_context, uint64_t virtual_address, memory_paging_clear_type_t type)
int8_t	memory_paging_toggle_attributes_ext (memory_page_table_context_t *table_context, uint64_t virtual_address, memory_paging_page_type_t type)
int8_t	memory_paging_set_user_accessible_ext (memory_page_table_context_t *table_context, uint64_t virtual_address)
int8_t	memory_paging_delete_page_ext_with_heap (memory_page_table_context_t *table_context, uint64_t virtual_address, uint64_t *frame_address)
int8_t	memory_paging_get_physical_address_ext (memory_page_table_context_t *table_context, uint64_t virtual_address, uint64_t *physical_address)
int8_t	memory_paging_add_va_for_frame_ext (memory_page_table_context_t *table_context, uint64_t va_start, frame_t *frm, memory_paging_page_type_t type)
int8_t	memory_paging_delete_va_for_frame_ext (memory_page_table_context_t *table_context, uint64_t va_start, frame_t *frm)

Variables
hashmap_t *	memory_paging_page_tables = NULL

Detailed Description

Paging implementation for x86_64 architecture.

This work is licensed under TURNSTONE OS Public License. Please read and understand latest version of Licence.

Function Documentation

memory_paging_add_page_ext()

int8_t memory_paging_add_page_ext	(	memory_page_table_context_t *	p4,
		uint64_t	virtual_address,
		uint64_t	frame_address,
		memory_paging_page_type_t	type
	)

creates virtual address frame mapping with adding page

Parameters

heap	the heap where variables will be created in
p4	p4 page table
virtual_address	virtual start address of page
frame_address	frame address of page links
type	page type, see also memory_paging_page_type_t

Returns

0 if successed

if heap is NULL, the pages created in default heap

memory_paging_switch_table()

memory_page_table_context_t * memory_paging_switch_table

(

const memory_page_table_context_t *

new_table

)

switches p4 page table

Parameters

[in]

new_table

new p4 table

Returns

old p4 table

change value of cr3 register. if new_table is NULL returns only current table