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Core: Improve APT Shared Font hack
Should fix invalid read loops in some games
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parent
32e279c0ca
commit
687d973980
@ -20,6 +20,7 @@ SharedPtr<SharedMemory> SharedMemory::Create(u32 size, MemoryPermission permissi
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shared_memory->name = std::move(name);
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shared_memory->name = std::move(name);
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shared_memory->base_address = 0x0;
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shared_memory->base_address = 0x0;
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shared_memory->fixed_address = 0x0;
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shared_memory->size = size;
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shared_memory->size = size;
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shared_memory->permissions = permissions;
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shared_memory->permissions = permissions;
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shared_memory->other_permissions = other_permissions;
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shared_memory->other_permissions = other_permissions;
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@ -30,9 +31,31 @@ SharedPtr<SharedMemory> SharedMemory::Create(u32 size, MemoryPermission permissi
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ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
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ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
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MemoryPermission other_permissions) {
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MemoryPermission other_permissions) {
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if (base_address != 0) {
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LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s: already mapped at 0x%08X!",
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GetObjectId(), address, name.c_str(), base_address);
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// TODO: Verify error code with hardware
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return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
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ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
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}
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if (fixed_address != 0) {
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if (address != 0 && address != fixed_address) {
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LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s: fixed_addres is 0x%08X!",
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GetObjectId(), address, name.c_str(), fixed_address);
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// TODO: Verify error code with hardware
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return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
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ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
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}
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// HACK(yuriks): This is only here to support the APT shared font mapping right now.
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// Later, this should actually map the memory block onto the address space.
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return RESULT_SUCCESS;
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}
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if (address < Memory::SHARED_MEMORY_VADDR || address + size >= Memory::SHARED_MEMORY_VADDR_END) {
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if (address < Memory::SHARED_MEMORY_VADDR || address + size >= Memory::SHARED_MEMORY_VADDR_END) {
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LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X outside of shared mem bounds!",
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LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s outside of shared mem bounds!",
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GetObjectId(), address);
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GetObjectId(), address, name.c_str());
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// TODO: Verify error code with hardware
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// TODO: Verify error code with hardware
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return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
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return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
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ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
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ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
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@ -61,6 +61,8 @@ public:
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/// Address of shared memory block in the process.
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/// Address of shared memory block in the process.
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VAddr base_address;
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VAddr base_address;
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/// Fixed address to allow mapping to. Used for blocks created from the linear heap.
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VAddr fixed_address;
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/// Size of the memory block. Page-aligned.
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/// Size of the memory block. Page-aligned.
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u32 size;
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u32 size;
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/// Permission restrictions applied to the process which created the block.
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/// Permission restrictions applied to the process which created the block.
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@ -78,8 +78,8 @@ void GetSharedFont(Service::Interface* self) {
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if (shared_font != nullptr) {
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if (shared_font != nullptr) {
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// TODO(yuriks): This is a hack to keep this working right now even with our completely
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// TODO(yuriks): This is a hack to keep this working right now even with our completely
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// broken shared memory system.
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// broken shared memory system.
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shared_font_mem->base_address = SHARED_FONT_VADDR;
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shared_font_mem->fixed_address = SHARED_FONT_VADDR;
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Kernel::g_current_process->vm_manager.MapMemoryBlock(shared_font_mem->base_address,
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Kernel::g_current_process->vm_manager.MapMemoryBlock(shared_font_mem->fixed_address,
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shared_font, 0, shared_font_mem->size, Kernel::MemoryState::Shared);
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shared_font, 0, shared_font_mem->size, Kernel::MemoryState::Shared);
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cmd_buff[0] = IPC::MakeHeader(0x44, 2, 2);
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cmd_buff[0] = IPC::MakeHeader(0x44, 2, 2);
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