mm

package

v0.2.0 Latest Latest Go to latest Published: Jul 21, 2021 License: MIT Imports: 4 Imported by: 0

Details

Valid go.mod file

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Repository

github.com/icexin/eggos

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
func Alloc() uintptr
func Fixmap(va, pa, size uintptr)
func Init()
func Mmap(va, size uintptr) uintptr
func PoolInit(p *Pool, size uintptr)
func Sbrk(n uintptr) uintptr
func SysFixedMmap(addr, size uintptr)
func SysMmap(vaddr, size uintptr) uintptr
type Pool
- func (p *Pool) Alloc() uintptr
- func (p *Pool) Free(ptr uintptr)

Constants ¶

View Source

const (
	PGSIZE = 4 << 10
	// 1-20 Mb memory reverse for kernel image
	MEMSTART = 20 << 20
	// 默认可以使用的物理内存终止地址，如果能从grub那里获取就用grub的
	DEFAULT_MEMTOP = 256 << 20
	// 虚拟内存起始地址
	VMSTART = 1 << 30

	PTE_P = 0x001
	PTE_W = 0x002
	PTE_U = 0x004
)

Variables ¶

This section is empty.

Functions ¶

func Alloc ¶

func Alloc() uintptr

func Fixmap ¶

func Fixmap(va, pa, size uintptr)

func Init ¶

func Init()

func Mmap ¶

func Mmap(va, size uintptr) uintptr

func PoolInit ¶

func PoolInit(p *Pool, size uintptr)

size will align ptr size

func Sbrk ¶

func Sbrk(n uintptr) uintptr

func SysFixedMmap ¶ added in v0.2.0

func SysFixedMmap(addr, size uintptr)

SysFixedMmap map the same physical address to the virtual address run in user mode

func SysMmap ¶ added in v0.2.0

func SysMmap(vaddr, size uintptr) uintptr

SysMmap like Mmap but can run in user mode wraper of syscall.Mmap

Types ¶

type Pool ¶

type Pool struct {
	// contains filtered or unexported fields
}

Pool used to manage fixed size memory block

func (*Pool) Alloc ¶

func (p *Pool) Alloc() uintptr

func (*Pool) Free ¶

func (p *Pool) Free(ptr uintptr)

Source Files ¶

View all Source files

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