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memory: Add kernel stack manager

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This commit is contained in:
EnderIce2
2024-10-30 02:28:49 +02:00
parent 99292467ed
commit ab6529f6e6
10 changed files with 175 additions and 15 deletions
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69
include/memory/kstack.hpp Normal file
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@ -0,0 +1,69 @@
/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef __FENNIX_KERNEL_MEMORY_KERNEL_STACK_MANAGER_H__
#define __FENNIX_KERNEL_MEMORY_KERNEL_STACK_MANAGER_H__
#include <memory.hpp>
namespace Memory
{
class KernelStackManager
{
public:
struct StackAllocation
{
void *PhysicalAddress;
void *VirtualAddress;
size_t Size;
};
private:
NewLock(StackLock);
std::list<StackAllocation> AllocatedStacks;
size_t TotalSize = 0;
uintptr_t CurrentStackTop = KERNEL_STACK_END;
public:
/**
* Allocate a new stack with detailed information
*
* @param Size Size in bytes to allocate
* @return {PhysicalAddress, VirtualAddress, Size}
*/
StackAllocation DetailedAllocate(size_t Size);
/**
* Allocate a new stack
*
* @param Size Size in bytes to allocate
* @return Pointer to the BASE of the stack
*/
void *Allocate(size_t Size);
/**
* Free a previously allocated stack
*
* @param Address Virtual Address
*/
void Free(void *Address);
KernelStackManager();
~KernelStackManager();
};
}
#endif // !__FENNIX_KERNEL_MEMORY_KERNEL_STACK_MANAGER_H__

14
include/memory/macro.hpp
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@ -50,17 +50,23 @@
#if defined(a64) || defined(aa64)
#define KERNEL_VMA_OFFSET 0xFFFFFFFF80000000
#define USER_ALLOC_BASE 0xFFFFA00000000000 /* 256 GiB */
#define USER_ALLOC_END 0xFFFFB00000000000
#define USER_ALLOC_BASE 0xFFFFA00000000000 /* 256 GiB */
#define USER_ALLOC_END 0xFFFFB00000000000
#define USER_STACK_END 0xFFFFEFFF00000000 /* 256 MiB */
#define USER_STACK_BASE 0xFFFFEFFFFFFF0000
#define KERNEL_STACK_BASE 0xFFFFB00000000000 /* 256 GiB */
#define KERNEL_STACK_END 0xFFFFC00000000000
#define USER_STACK_END 0xFFFFEFFF00000000 /* 256 MiB */
#define USER_STACK_BASE 0xFFFFEFFFFFFF0000
#elif defined(a32)
#define KERNEL_VMA_OFFSET 0xC0000000
#define USER_ALLOC_BASE 0x80000000
#define USER_ALLOC_END 0xA0000000
#define KERNEL_STACK_BASE 0xA0000000
#define KERNEL_STACK_END 0xB0000000
#define USER_STACK_BASE 0xEFFFFFFF
#define USER_STACK_END 0xE0000000
#endif