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Kernel: Properly implement ControlMemory FREE and COMMIT

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This commit is contained in:
Yuri Kunde Schlesner
2015-07-17 23:19:16 -03:00
parent ccab02c723
commit cdeeecf080
6 changed files with 338 additions and 38 deletions
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24
src/core/hle/kernel/vm_manager.h
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@ -171,11 +171,20 @@ public:
*/
ResultVal<VMAHandle> MapMMIO(VAddr target, PAddr paddr, u32 size, MemoryState state);
/// Unmaps the given VMA.
void Unmap(VMAHandle vma);
/// Unmaps a range of addresses, splitting VMAs as necessary.
ResultCode UnmapRange(VAddr target, u32 size);
/// Changes the permissions of the given VMA.
void Reprotect(VMAHandle vma, VMAPermission new_perms);
VMAHandle Reprotect(VMAHandle vma, VMAPermission new_perms);
/// Changes the permissions of a range of addresses, splitting VMAs as necessary.
ResultCode ReprotectRange(VAddr target, u32 size, VMAPermission new_perms);
/**
* Scans all VMAs and updates the page table range of any that use the given vector as backing
* memory. This should be called after any operation that causes reallocation of the vector.
*/
void RefreshMemoryBlockMappings(const std::vector<u8>* block);
/// Dumps the address space layout to the log, for debugging
void LogLayout(Log::Level log_level) const;
@ -186,12 +195,21 @@ private:
/// Converts a VMAHandle to a mutable VMAIter.
VMAIter StripIterConstness(const VMAHandle& iter);
/// Unmaps the given VMA.
VMAIter Unmap(VMAIter vma);
/**
* Carves a VMA of a specific size at the specified address by splitting Free VMAs while doing
* the appropriate error checking.
*/
ResultVal<VMAIter> CarveVMA(VAddr base, u32 size);
/**
* Splits the edges of the given range of non-Free VMAs so that there is a VMA split at each
* end of the range.
*/
ResultVal<VMAIter> CarveVMARange(VAddr base, u32 size);
/**
* Splits a VMA in two, at the specified offset.
* @returns the right side of the split, with the original iterator becoming the left side.