From c084fc824cf4e076bb83e41af64f5cfaa9204dcb Mon Sep 17 00:00:00 2001 From: MerryMage Date: Sat, 16 Apr 2016 08:46:11 +0100 Subject: Memory: IsValidVirtualAddress/IsValidPhysicalAddress --- src/core/memory.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'src/core/memory.cpp') diff --git a/src/core/memory.cpp b/src/core/memory.cpp index ee9b69f81..68a29b154 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -246,6 +246,26 @@ void Write(const VAddr vaddr, const T data) { } } +bool IsValidVirtualAddress(const VAddr vaddr) { + const u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS]; + if (page_pointer) + return true; + + if (current_page_table->attributes[vaddr >> PAGE_BITS] != PageType::Special) + return false; + + MMIORegionPointer mmio_region = GetMMIOHandler(vaddr); + if (mmio_region) { + return mmio_region->IsValidAddress(vaddr); + } + + return false; +} + +bool IsValidPhysicalAddress(const PAddr paddr) { + return IsValidVirtualAddress(PhysicalToVirtualAddress(paddr)); +} + u8* GetPointer(const VAddr vaddr) { u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS]; if (page_pointer) { @@ -261,6 +281,7 @@ u8* GetPointer(const VAddr vaddr) { } u8* GetPhysicalPointer(PAddr address) { + // TODO(Subv): This call should not go through the application's memory mapping. return GetPointer(PhysicalToVirtualAddress(address)); } -- cgit v1.2.3