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x32 still not working (TODO: do 1:1 page mapping, except for kernel)

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Alex
2022-10-18 21:16:12 +03:00
parent 348aa69dcb
commit cb349ae620
15 changed files with 480 additions and 94 deletions
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23
Core/Memory/PhysicalMemoryManager.cpp
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@ -237,27 +237,40 @@ namespace Memory
if (Info->Memory.Entry[i].Type == Usable)
if (Info->Memory.Entry[i].Length > LargestFreeMemorySegmentSize)
{
// We don't want to use 0 as a memory address.
if (Info->Memory.Entry[i].BaseAddress == nullptr)
continue;
LargestFreeMemorySegment = (void *)Info->Memory.Entry[i].BaseAddress;
LargestFreeMemorySegmentSize = Info->Memory.Entry[i].Length;
debug("Largest free memory segment: %p (%dKB)",
debug("Largest free memory segment: %llp (%lldMB)",
(void *)Info->Memory.Entry[i].BaseAddress,
TO_KB(Info->Memory.Entry[i].Length));
TO_MB(Info->Memory.Entry[i].Length));
}
TotalMemory = MemorySize;
FreeMemory = MemorySize;
uint64_t BitmapSize = ALIGN_UP((MemorySize / 0x1000) / 8, 0x1000);
trace("Initializing Bitmap (%p %dKB)", LargestFreeMemorySegment, TO_KB(BitmapSize));
if (LargestFreeMemorySegment == nullptr)
{
error("No free memory found!");
CPU::Stop();
}
uint64_t BitmapSize = ALIGN_UP((MemorySize / PAGE_SIZE) / 8, PAGE_SIZE);
trace("Initializing Bitmap at %llp-%llp (%lld Bytes)",
LargestFreeMemorySegment,
(void *)((uint64_t)LargestFreeMemorySegment + BitmapSize),
BitmapSize);
PageBitmap.Size = BitmapSize;
PageBitmap.Buffer = (uint8_t *)LargestFreeMemorySegment;
for (uint64_t i = 0; i < BitmapSize; i++)
*(uint8_t *)(PageBitmap.Buffer + i) = 0;
trace("Reserving pages...");
this->ReservePages(0, MemorySize / PAGE_SIZE + 1);
for (uint64_t i = 0; i < Info->Memory.Entries; i++)
if (Info->Memory.Entry[i].Type == Usable)
this->UnreservePages((void *)Info->Memory.Entry[i].BaseAddress, Info->Memory.Entry[i].Length / PAGE_SIZE + 1);
this->ReservePages(0, 0x100); // Reserve between 0 and 0x100000
this->ReservePages(0, 0x100); // Reserve between 0 and 0x100000.
this->LockPages(PageBitmap.Buffer, PageBitmap.Size / PAGE_SIZE + 1);
}