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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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4
src/core/file_sys/program_metadata.cpp
View file

@ -94,6 +94,10 @@ u64 ProgramMetadata::GetFilesystemPermissions() const {
return aci_file_access.permissions;
}
u32 ProgramMetadata::GetSystemResourceSize() const {
return npdm_header.system_resource_size;
}
const ProgramMetadata::KernelCapabilityDescriptors& ProgramMetadata::GetKernelCapabilities() const {
return aci_kernel_capabilities;
}

4
src/core/file_sys/program_metadata.h
View file

@ -58,6 +58,7 @@ public:
u32 GetMainThreadStackSize() const;
u64 GetTitleID() const;
u64 GetFilesystemPermissions() const;
u32 GetSystemResourceSize() const;
const KernelCapabilityDescriptors& GetKernelCapabilities() const;
void Print() const;
@ -76,7 +77,8 @@ private:
u8 reserved_3;
u8 main_thread_priority;
u8 main_thread_cpu;
std::array<u8, 8> reserved_4;
std::array<u8, 4> reserved_4;
u32_le system_resource_size;
u32_le process_category;
u32_le main_stack_size;
std::array<u8, 0x10> application_name;