Memory.i686.hpp File Reference

#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>

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Data Structures
struct	Frame
struct	Page
struct	TableEntry
struct	Table
struct	DirectoryEntry
struct	Directory

Macros
#define	ARCH_PAGE_DIR_ENTRIES   1024
#define	ARCH_PAGE_TABLE_ENTRIES   1024
#define	ARCH_PAGE_SIZE   4096
#define	ARCH_PAGE_ALIGN   0xFFFFF000
#define	ARCH_PAGE_DIR_ENTRY_SHIFT   22
#define	ARCH_PAGE_TABLE_ENTRY_SHIFT   12
#define	ARCH_PAGE_TABLE_ENTRY_MASK   0x3ff

Functions
	__attribute__ ((always_inline)) static inline void setPageDirectory(uintptr_t pageDirPtr)

Detailed Description

i686 memory structures and definitions. C & C++ compatible header.

Author

Keeton Feavel (keeto.nosp@m.n@xy.nosp@m.r.is)

Version

0.1

Date

2021-10-26

Copyright

Copyright the Xyris Contributors (c) 2021

Definition in file Memory.i686.hpp.

Macro Definition Documentation

ARCH_PAGE_ALIGN

#define ARCH_PAGE_ALIGN   0xFFFFF000

Definition at line 22 of file Memory.i686.hpp.

ARCH_PAGE_DIR_ENTRIES

#define ARCH_PAGE_DIR_ENTRIES   1024

Definition at line 19 of file Memory.i686.hpp.

ARCH_PAGE_DIR_ENTRY_SHIFT

#define ARCH_PAGE_DIR_ENTRY_SHIFT   22

Definition at line 23 of file Memory.i686.hpp.

ARCH_PAGE_SIZE

#define ARCH_PAGE_SIZE   4096

Definition at line 21 of file Memory.i686.hpp.

ARCH_PAGE_TABLE_ENTRIES

#define ARCH_PAGE_TABLE_ENTRIES   1024

Definition at line 20 of file Memory.i686.hpp.

ARCH_PAGE_TABLE_ENTRY_MASK

#define ARCH_PAGE_TABLE_ENTRY_MASK   0x3ff

Definition at line 25 of file Memory.i686.hpp.

ARCH_PAGE_TABLE_ENTRY_SHIFT

#define ARCH_PAGE_TABLE_ENTRY_SHIFT   12

Definition at line 24 of file Memory.i686.hpp.

Function Documentation

__attribute__()

__attribute__

(

(always_inline)

)

Writes the address of the page directory to CR3. Does not enable paging.

Parameters

pageDirPtr

Address of page directory structure to be used

Definition at line 213 of file Memory.i686.hpp.

{
    asm volatile(
        "mov %0, %%cr3"
        :
        : "b" (pageDirPtr)
        : "memory"
    );
}