mirror of
https://github.com/taigrr/gopher-os
synced 2025-01-18 04:43:13 -08:00
d7eb2547dd
To keep the implementation portable, the Frame type had to be changed from uint64 to uintptr. Using uintptr ensures that the frame will always match the pointer size of the platform.
18 lines
475 B
Go
18 lines
475 B
Go
// +build amd64
|
|
|
|
package mem
|
|
|
|
const (
|
|
// PointerShift is equal to log2(unsafe.Sizeof(uintptr)). The pointer
|
|
// size for this architecture is defined as (1 << PointerShift).
|
|
PointerShift = 3
|
|
|
|
// PageShift is equal to log2(PageSize). This constant is used when
|
|
// we need to convert a physical address to a page number (shift right by PageShift)
|
|
// and vice-versa.
|
|
PageShift = 12
|
|
|
|
// PageSize defines the system's page size in bytes.
|
|
PageSize = Size(1 << PageShift)
|
|
)
|