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Map kernel file too

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Alex 2023-03-23 23:26:18 +02:00
parent 338df2d9fa
commit 8b082ac98a
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
2 changed files with 11 additions and 9 deletions
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18
Core/Memory/Memory.cpp
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@ -32,9 +32,8 @@ NewLock(OperatorAllocatorLock);
Physical KernelAllocator;
PageTable4 *KernelPageTable = nullptr;
PageTable4 *UserspaceKernelOnlyPageTable = nullptr;
void *KPT = nullptr;
static MemoryAllocatorType AllocatorType = MemoryAllocatorType::None;
static MemoryAllocatorType AllocatorType = MemoryAllocatorType::Pages;
Xalloc::V1 *XallocV1Allocator = nullptr;
#ifdef DEBUG
@ -131,6 +130,8 @@ NIF void MapKernel(PageTable4 *PT, BootInfo *Info)
uintptr_t KernelDataEnd = (uintptr_t)&_kernel_data_end;
uintptr_t KernelRoDataEnd = (uintptr_t)&_kernel_rodata_end;
uintptr_t KernelEnd = (uintptr_t)&_kernel_end;
uintptr_t KernelFileStart = (uintptr_t)Info->Kernel.FileBase;
uintptr_t KernelFileEnd = KernelFileStart + Info->Kernel.Size;
uintptr_t BaseKernelMapAddress = (uintptr_t)Info->Kernel.PhysicalBase;
uintptr_t k;
@ -163,6 +164,12 @@ NIF void MapKernel(PageTable4 *PT, BootInfo *Info)
BaseKernelMapAddress += PAGE_SIZE;
}
for (k = KernelFileStart; k < KernelFileEnd; k += PAGE_SIZE)
{
va.Map((void *)k, (void *)k, PTFlag::RW | PTFlag::G);
KernelAllocator.LockPage((void *)k);
}
debug("\nStart: %#llx - Text End: %#llx - RoEnd: %#llx - End: %#llx\nStart Physical: %#llx - End Physical: %#llx",
KernelStart, KernelTextEnd, KernelRoDataEnd, KernelEnd, Info->Kernel.PhysicalBase, BaseKernelMapAddress - PAGE_SIZE);
@ -253,8 +260,6 @@ NIF void InitializeMemoryManagement(BootInfo *Info)
TO_MB(KernelAllocator.GetTotalMemory()),
TO_MB(KernelAllocator.GetReservedMemory()));
AllocatorType = MemoryAllocatorType::Pages;
trace("Initializing Virtual Memory Manager");
KernelPageTable = (PageTable4 *)KernelAllocator.RequestPages(TO_PAGES(PAGE_SIZE));
memset(KernelPageTable, 0, PAGE_SIZE);
@ -286,11 +291,10 @@ NIF void InitializeMemoryManagement(BootInfo *Info)
debug("Userspace:");
tracepagetable(UserspaceKernelOnlyPageTable);
#endif
KPT = KernelPageTable;
#if defined(a64) || defined(a32)
asmv("mov %0, %%cr3" ::"r"(KPT));
asmv("mov %0, %%cr3" ::"r"(KernelPageTable));
#elif defined(aa64)
asmv("msr ttbr0_el1, %0" ::"r"(KPT));
asmv("msr ttbr0_el1, %0" ::"r"(KernelPageTable));
#endif
debug("Page table updated.");
if (strstr(Info->Kernel.CommandLine, "xallocv1"))

2
include/memory.hpp
View File

@ -676,8 +676,6 @@ extern Memory::PageTable4 *UserspaceKernelOnlyPageTable;
#endif // __cplusplus
extern void *KPT;
EXTERNC void *HeapMalloc(size_t Size);
EXTERNC void *HeapCalloc(size_t n, size_t Size);
EXTERNC void *HeapRealloc(void *Address, size_t Size);