28 lines
626 B
C++
28 lines
626 B
C++
#pragma once
|
|
|
|
#include <stdint.h>
|
|
|
|
// KernelStackManager doles out kernel stacks.
|
|
//
|
|
// KernelStacks are in the region:
|
|
// 0xFFFFFFFF 90000000 - 0xFFFFFFFF 9FFFFFFF
|
|
//
|
|
// Each kernel stack is 12 KiB with a 4 Kib page boundary.
|
|
//
|
|
// It is global object that is only exposed via internal linkage
|
|
// to the VirtualMemory class. All kernel stacks should be created through that
|
|
// class.
|
|
class KernelStackManager {
|
|
public:
|
|
static void Init();
|
|
|
|
uint64_t* AllocateKernelStack();
|
|
|
|
void FreeKernelStack(uint64_t stack_base);
|
|
|
|
private:
|
|
KernelStackManager();
|
|
uint64_t next_stack_addr_;
|
|
uint64_t freed_stack_cnt_ = 0;
|
|
};
|