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Memory related code optimization

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This commit is contained in:
Alex
2022-12-05 00:48:41 +02:00
parent f34278891b
commit 2d1c42fbcd
9 changed files with 123 additions and 57 deletions
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10
Core/Memory/StackGuard.cpp
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@ -11,6 +11,7 @@ namespace Memory
if (this->UserMode)
{
void *AllocatedStack = KernelAllocator.RequestPages(TO_PAGES(USER_STACK_SIZE));
debug("AllocatedStack: %p", AllocatedStack);
memset(AllocatedStack, 0, USER_STACK_SIZE);
for (uint64_t i = 0; i < TO_PAGES(USER_STACK_SIZE); i++)
{
@ -25,6 +26,7 @@ namespace Memory
else
{
this->StackBottom = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE));
debug("StackBottom: %p", this->StackBottom);
memset(this->StackBottom, 0, STACK_SIZE);
this->StackTop = (void *)((uint64_t)this->StackBottom + STACK_SIZE);
this->Size = STACK_SIZE;
@ -32,7 +34,12 @@ namespace Memory
trace("Allocated stack at %p", this->StackBottom);
}
StackGuard::~StackGuard() { KernelAllocator.FreePages(this->StackBottom, TO_PAGES(this->Size)); }
StackGuard::~StackGuard()
{
fixme("Temporarily disabled stack guard deallocation");
// KernelAllocator.FreePages(this->StackBottom, TO_PAGES(this->Size));
// debug("Freed stack at %p", this->StackBottom);
}
bool StackGuard::Expand(uint64_t FaultAddress)
{
@ -46,6 +53,7 @@ namespace Memory
else
{
void *AllocatedStack = KernelAllocator.RequestPages(TO_PAGES(USER_STACK_SIZE));
debug("AllocatedStack: %p", AllocatedStack);
memset(AllocatedStack, 0, USER_STACK_SIZE);
for (uint64_t i = 0; i < TO_PAGES(USER_STACK_SIZE); i++)
Virtual(this->Table).Map((void *)((uint64_t)AllocatedStack + (i * PAGE_SIZE)), (void *)((uint64_t)this->StackBottom - (i * PAGE_SIZE)), PTFlag::RW | PTFlag::US);