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author | bunnei <bunneidev@gmail.com> | 2019-03-06 17:43:07 +0100 |
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committer | GitHub <noreply@github.com> | 2019-03-06 17:43:07 +0100 |
commit | 234f00bdd481c9ec3db68f81872512d7a02f4a3b (patch) | |
tree | 7780c348be35d5d7b967a956774830f0e851cb51 /src/core/hle/kernel/vm_manager.cpp | |
parent | Merge pull request #2200 from lioncash/audio (diff) | |
parent | vm_manager: Use range helpers in HeapAlloc() and HeapFree() (diff) | |
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Diffstat (limited to 'src/core/hle/kernel/vm_manager.cpp')
-rw-r--r-- | src/core/hle/kernel/vm_manager.cpp | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/src/core/hle/kernel/vm_manager.cpp b/src/core/hle/kernel/vm_manager.cpp index 10ad94aa6..05c59af34 100644 --- a/src/core/hle/kernel/vm_manager.cpp +++ b/src/core/hle/kernel/vm_manager.cpp @@ -17,8 +17,8 @@ #include "core/memory_setup.h" namespace Kernel { - -static const char* GetMemoryStateName(MemoryState state) { +namespace { +const char* GetMemoryStateName(MemoryState state) { static constexpr const char* names[] = { "Unmapped", "Io", "Normal", "CodeStatic", @@ -35,6 +35,14 @@ static const char* GetMemoryStateName(MemoryState state) { return names[ToSvcMemoryState(state)]; } +// Checks if a given address range lies within a larger address range. +constexpr bool IsInsideAddressRange(VAddr address, u64 size, VAddr address_range_begin, + VAddr address_range_end) { + const VAddr end_address = address + size - 1; + return address_range_begin <= address && end_address <= address_range_end - 1; +} +} // Anonymous namespace + bool VirtualMemoryArea::CanBeMergedWith(const VirtualMemoryArea& next) const { ASSERT(base + size == next.base); if (permissions != next.permissions || state != next.state || attribute != next.attribute || @@ -249,8 +257,7 @@ ResultCode VMManager::ReprotectRange(VAddr target, u64 size, VMAPermission new_p } ResultVal<VAddr> VMManager::HeapAllocate(VAddr target, u64 size, VMAPermission perms) { - if (target < GetHeapRegionBaseAddress() || target + size > GetHeapRegionEndAddress() || - target + size < target) { + if (!IsWithinHeapRegion(target, size)) { return ERR_INVALID_ADDRESS; } @@ -285,8 +292,7 @@ ResultVal<VAddr> VMManager::HeapAllocate(VAddr target, u64 size, VMAPermission p } ResultCode VMManager::HeapFree(VAddr target, u64 size) { - if (target < GetHeapRegionBaseAddress() || target + size > GetHeapRegionEndAddress() || - target + size < target) { + if (!IsWithinHeapRegion(target, size)) { return ERR_INVALID_ADDRESS; } @@ -706,6 +712,11 @@ u64 VMManager::GetAddressSpaceWidth() const { return address_space_width; } +bool VMManager::IsWithinAddressSpace(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetAddressSpaceBaseAddress(), + GetAddressSpaceEndAddress()); +} + VAddr VMManager::GetASLRRegionBaseAddress() const { return aslr_region_base; } @@ -750,6 +761,11 @@ u64 VMManager::GetCodeRegionSize() const { return code_region_end - code_region_base; } +bool VMManager::IsWithinCodeRegion(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetCodeRegionBaseAddress(), + GetCodeRegionEndAddress()); +} + VAddr VMManager::GetHeapRegionBaseAddress() const { return heap_region_base; } @@ -762,6 +778,11 @@ u64 VMManager::GetHeapRegionSize() const { return heap_region_end - heap_region_base; } +bool VMManager::IsWithinHeapRegion(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetHeapRegionBaseAddress(), + GetHeapRegionEndAddress()); +} + VAddr VMManager::GetMapRegionBaseAddress() const { return map_region_base; } @@ -774,6 +795,10 @@ u64 VMManager::GetMapRegionSize() const { return map_region_end - map_region_base; } +bool VMManager::IsWithinMapRegion(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetMapRegionBaseAddress(), GetMapRegionEndAddress()); +} + VAddr VMManager::GetNewMapRegionBaseAddress() const { return new_map_region_base; } @@ -786,6 +811,11 @@ u64 VMManager::GetNewMapRegionSize() const { return new_map_region_end - new_map_region_base; } +bool VMManager::IsWithinNewMapRegion(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetNewMapRegionBaseAddress(), + GetNewMapRegionEndAddress()); +} + VAddr VMManager::GetTLSIORegionBaseAddress() const { return tls_io_region_base; } @@ -798,4 +828,9 @@ u64 VMManager::GetTLSIORegionSize() const { return tls_io_region_end - tls_io_region_base; } +bool VMManager::IsWithinTLSIORegion(VAddr address, u64 size) const { + return IsInsideAddressRange(address, size, GetTLSIORegionBaseAddress(), + GetTLSIORegionEndAddress()); +} + } // namespace Kernel |