From 13a8fde3ad2a4a37cf1bb8dcb367b4c8fc8b4d9b Mon Sep 17 00:00:00 2001 From: Michael Scire Date: Sun, 7 Jul 2019 09:42:54 -0700 Subject: Implement MapPhysicalMemory/UnmapPhysicalMemory 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. --- src/core/file_sys/program_metadata.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/core/file_sys/program_metadata.cpp') diff --git a/src/core/file_sys/program_metadata.cpp b/src/core/file_sys/program_metadata.cpp index eb76174c5..7310b3602 100644 --- a/src/core/file_sys/program_metadata.cpp +++ b/src/core/file_sys/program_metadata.cpp @@ -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; } -- cgit v1.2.3