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Kernel: Zero-fill shared memory blocks when mapping

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This works around crashes related to GSP/HID/etc. shared memory blocks
having garbage values. The proper fix requires proper management of
mapped memory blocks in the process.
This commit is contained in:
Yuri Kunde Schlesner 2015-05-10 19:49:46 -03:00
parent c96f22490a
commit 774eea8374
1 changed files with 8 additions and 0 deletions
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8
src/core/hle/kernel/shared_memory.cpp
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@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "common/logging/log.h"
#include "core/mem_map.h"
@ -38,6 +40,12 @@ ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
// TODO: Test permissions
// HACK: Since there's no way to write to the memory block without mapping it onto the game
// process yet, at least initialize memory the first time it's mapped.
if (address != this->base_address) {
std::memset(Memory::GetPointer(address), 0, size);
}
this->base_address = address;
return RESULT_SUCCESS;