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Stack guard implementation

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This commit is contained in:
Alex
2022-11-21 03:20:13 +02:00
parent 1afe255fed
commit eaaf8427dc
7 changed files with 171 additions and 43 deletions
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26
Core/Memory/Memory.cpp
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@ -43,8 +43,8 @@ void MapFromZero(PageTable *PT, BootInfo *Info)
uint64_t VirtualOffsetNormalVMA = NORMAL_VMA_OFFSET;
for (uint64_t t = 0; t < Info->Memory.Size; t += PAGE_SIZE)
{
va.Map((void *)t, (void *)t, PTFlag::RW | PTFlag::US);
va.Map((void *)VirtualOffsetNormalVMA, (void *)t, PTFlag::RW | PTFlag::US);
va.Map((void *)t, (void *)t, PTFlag::RW);
va.Map((void *)VirtualOffsetNormalVMA, (void *)t, PTFlag::RW);
VirtualOffsetNormalVMA += PAGE_SIZE;
}
}
@ -174,8 +174,10 @@ void InitializeMemoryManagement(BootInfo *Info)
UserspaceKernelOnlyPageTable = (PageTable *)KernelAllocator.RequestPages(TO_PAGES(PAGE_SIZE));
memset(UserspaceKernelOnlyPageTable, 0, PAGE_SIZE);
debug("Mapping from %#llx to %#llx", 0, Info->Memory.Size);
debug("Mapping from 0x0 to %#llx", Info->Memory.Size);
MapFromZero(KernelPageTable, Info);
debug("Mapping from 0x0 %#llx for Userspace Page Table", Info->Memory.Size);
MapFromZero(UserspaceKernelOnlyPageTable, Info);
/* Mapping Framebuffer address */
debug("Mapping Framebuffer");
@ -289,14 +291,20 @@ void HeapFree(void *Address)
}
}
void *operator new(size_t Size) { return HeapMalloc(Size); }
void *operator new[](size_t Size) { return HeapMalloc(Size); }
void *operator new(size_t Size) {
return HeapMalloc(Size); }
void *operator new[](size_t Size) {
return HeapMalloc(Size); }
void *operator new(unsigned long Size, std::align_val_t Alignment)
{
fixme("operator new with alignment(%#lx) is not implemented", Alignment);
return HeapMalloc(Size);
}
void operator delete(void *Pointer) { HeapFree(Pointer); }
void operator delete[](void *Pointer) { HeapFree(Pointer); }
void operator delete(void *Pointer, long unsigned int Size) { HeapFree(Pointer); }
void operator delete[](void *Pointer, long unsigned int Size) { HeapFree(Pointer); }
void operator delete(void *Pointer) {
HeapFree(Pointer); }
void operator delete[](void *Pointer) {
HeapFree(Pointer); }
void operator delete(void *Pointer, long unsigned int Size) {
HeapFree(Pointer); }
void operator delete[](void *Pointer, long unsigned int Size) {
HeapFree(Pointer); }