35 lines
816 B
C++
35 lines
816 B
C++
#include "object/address_space.h"
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#include "memory/kernel_stack_manager.h"
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#include "memory/paging_util.h"
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#include "memory/physical_memory.h"
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extern KernelStackManager* gKernelStackManager;
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AddressSpace AddressSpace::ForRoot() {
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uint64_t cr3 = 0;
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asm volatile("mov %%cr3, %0;" : "=r"(cr3));
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return {cr3};
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}
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AddressSpace::AddressSpace() {
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cr3_ = phys_mem::AllocatePage();
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InitializePml4(cr3_);
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}
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uint64_t AddressSpace::AllocateUserStack() {
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return user_stacks_.NewUserStack();
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}
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uint64_t AddressSpace::GetNextMemMapAddr(uint64_t size) {
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uint64_t addr = next_memmap_addr_;
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next_memmap_addr_ += size;
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if (next_memmap_addr_ >= 0x30'00000000) {
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panic("OOM: Memmap");
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}
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return addr;
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}
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uint64_t* AddressSpace::AllocateKernelStack() {
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return gKernelStackManager->AllocateKernelStack();
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}
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