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[Zion] Access the KernelStackManager through the VMM.

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This commit is contained in:
Drew Galbraith 2023-11-15 15:38:25 -08:00
parent c5b9d20c7e
commit 07e6e3028d
11 changed files with 46 additions and 38 deletions
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18
zion/memory/kernel_stack_manager.cpp
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@ -2,30 +2,28 @@
#include "common/gdt.h"
#include "debug/debug.h"
#include "interrupt/interrupt.h"
#include "memory/paging_util.h"
#define KERNEL_STACK_START 0xFFFFFFFF'90000000
#define KERNEL_STACK_LIMIT 0xFFFFFFFF'9FFFFFFF
#define KERNEL_STACK_OFFSET 0x4000
KernelStackManager* gKernelStackManager;
void KernelStackManager::Init() {
gKernelStackManager = new KernelStackManager();
SetIst1(gKernelStackManager->AllocateKernelStack());
}
KernelStackManager::KernelStackManager()
: next_stack_addr_(KERNEL_STACK_START) {}
uint64_t* KernelStackManager::AllocateKernelStack() {
void KernelStackManager::SetupInterruptStack() {
SetIst1(AllocateKernelStack());
UpdateFaultHandlersToIst1();
}
uint64_t KernelStackManager::AllocateKernelStack() {
next_stack_addr_ += KERNEL_STACK_OFFSET;
if (next_stack_addr_ >= KERNEL_STACK_LIMIT) {
panic("No more kernelstack space");
}
EnsureResident(next_stack_addr_ - 0x3000, 0x3000);
return reinterpret_cast<uint64_t*>(next_stack_addr_) - 1;
return next_stack_addr_ - 8;
}
void KernelStackManager::FreeKernelStack(uint64_t stack_base) {