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Implement MapPhysicalMemory/UnmapPhysicalMemory

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This implements svcMapPhysicalMemory/svcUnmapPhysicalMemory for Yuzu,
which can be used to map memory at a desired address by games since
3.0.0.

It also properly parses SystemResourceSize from NPDM, and makes
information available via svcGetInfo.

This is needed for games like Super Smash Bros. and Diablo 3 -- this
PR's implementation does not run into the "ASCII reads" issue mentioned
in the comments of #2626, which was caused by the following bugs in
Yuzu's memory management that this PR also addresses:
* Yuzu's memory coalescing does not properly merge blocks. This results
  in a polluted address space/svcQueryMemory results that would be
  impossible to replicate on hardware, which can lead to game code making
  the wrong assumptions about memory layout.
  * This implements better merging for AllocatedMemoryBlocks.
* Yuzu's implementation of svcMirrorMemory unprotected the entire
  virtual memory range containing the range being mirrored. This could
  lead to games attempting to map data at that unprotected
  range/attempting to access that range after yuzu improperly unmapped
  it.
  * This PR fixes it by simply calling ReprotectRange instead of
    Reprotect.
This commit is contained in:
Michael Scire 2019-07-07 09:42:54 -07:00
parent 9e689a81f8
commit 13a8fde3ad
8 changed files with 475 additions and 21 deletions
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11
src/core/hle/kernel/process.h
View file

@ -168,8 +168,9 @@ public:
return capabilities.GetPriorityMask();
}
u32 IsVirtualMemoryEnabled() const {
return is_virtual_address_memory_enabled;
/// Gets the amount of secure memory to allocate for memory management.
u32 GetSystemResourceSize() const {
return system_resource_size;
}
/// Whether this process is an AArch64 or AArch32 process.
@ -298,12 +299,16 @@ private:
/// Title ID corresponding to the process
u64 program_id = 0;
/// Specifies additional memory to be reserved for the process's memory management by the
/// system. When this is non-zero, secure memory is allocated and used for page table allocation
/// instead of using the normal global page tables/memory block management.
u32 system_resource_size = 0;
/// Resource limit descriptor for this process
SharedPtr<ResourceLimit> resource_limit;
/// The ideal CPU core for this process, threads are scheduled on this core by default.
u8 ideal_core = 0;
u32 is_virtual_address_memory_enabled = 0;
/// The Thread Local Storage area is allocated as processes create threads,
/// each TLS area is 0x200 bytes, so one page (0x1000) is split up in 8 parts, and each part