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Memory: IsValidVirtualAddress/IsValidPhysicalAddress
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51ee2d2eb1
commit
c084fc824c
3 changed files with 26 additions and 0 deletions
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@ -246,6 +246,26 @@ void Write(const VAddr vaddr, const T data) {
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}
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}
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}
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}
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bool IsValidVirtualAddress(const VAddr vaddr) {
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const u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
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if (page_pointer)
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return true;
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if (current_page_table->attributes[vaddr >> PAGE_BITS] != PageType::Special)
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return false;
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MMIORegionPointer mmio_region = GetMMIOHandler(vaddr);
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if (mmio_region) {
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return mmio_region->IsValidAddress(vaddr);
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}
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return false;
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}
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bool IsValidPhysicalAddress(const PAddr paddr) {
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return IsValidVirtualAddress(PhysicalToVirtualAddress(paddr));
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}
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u8* GetPointer(const VAddr vaddr) {
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u8* GetPointer(const VAddr vaddr) {
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u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
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u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
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if (page_pointer) {
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if (page_pointer) {
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@ -261,6 +281,7 @@ u8* GetPointer(const VAddr vaddr) {
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}
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}
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u8* GetPhysicalPointer(PAddr address) {
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u8* GetPhysicalPointer(PAddr address) {
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// TODO(Subv): This call should not go through the application's memory mapping.
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return GetPointer(PhysicalToVirtualAddress(address));
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return GetPointer(PhysicalToVirtualAddress(address));
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}
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}
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@ -110,6 +110,9 @@ enum : VAddr {
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NEW_LINEAR_HEAP_VADDR_END = NEW_LINEAR_HEAP_VADDR + NEW_LINEAR_HEAP_SIZE,
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NEW_LINEAR_HEAP_VADDR_END = NEW_LINEAR_HEAP_VADDR + NEW_LINEAR_HEAP_SIZE,
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};
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};
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bool IsValidVirtualAddress(const VAddr addr);
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bool IsValidPhysicalAddress(const PAddr addr);
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u8 Read8(VAddr addr);
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u8 Read8(VAddr addr);
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u16 Read16(VAddr addr);
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u16 Read16(VAddr addr);
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u32 Read32(VAddr addr);
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u32 Read32(VAddr addr);
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@ -18,6 +18,8 @@ class MMIORegion {
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public:
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public:
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virtual ~MMIORegion() = default;
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virtual ~MMIORegion() = default;
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virtual bool IsValidAddress(VAddr addr) = 0;
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virtual u8 Read8(VAddr addr) = 0;
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virtual u8 Read8(VAddr addr) = 0;
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virtual u16 Read16(VAddr addr) = 0;
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virtual u16 Read16(VAddr addr) = 0;
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virtual u32 Read32(VAddr addr) = 0;
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virtual u32 Read32(VAddr addr) = 0;
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