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Kernel/Memory: Changed GetPhysicalPointer so that it doesn't go through the current process' page table to obtain a pointer.

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This commit is contained in:
Subv 2017-07-21 22:22:59 -05:00
parent c34ec5e77c
commit 214150f00c
4 changed files with 69 additions and 30 deletions
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30
src/core/hle/kernel/memory.cpp
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@ -8,7 +8,6 @@
#include <memory>
#include <utility>
#include <vector>
#include "audio_core/audio_core.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
@ -24,7 +23,7 @@
namespace Kernel {
static MemoryRegionInfo memory_regions[3];
MemoryRegionInfo memory_regions[3];
/// Size of the APPLICATION, SYSTEM and BASE memory regions (respectively) for each system
/// memory configuration type.
@ -96,9 +95,6 @@ MemoryRegionInfo* GetMemoryRegion(MemoryRegion region) {
}
}
std::array<u8, Memory::VRAM_SIZE> vram;
std::array<u8, Memory::N3DS_EXTRA_RAM_SIZE> n3ds_extra_ram;
void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mapping) {
using namespace Memory;
@ -143,30 +139,14 @@ void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mappin
return;
}
// TODO(yuriks): Use GetPhysicalPointer when that becomes independent of the virtual
// mappings.
u8* target_pointer = nullptr;
switch (area->paddr_base) {
case VRAM_PADDR:
target_pointer = vram.data();
break;
case DSP_RAM_PADDR:
target_pointer = AudioCore::GetDspMemory().data();
break;
case N3DS_EXTRA_RAM_PADDR:
target_pointer = n3ds_extra_ram.data();
break;
default:
UNREACHABLE();
}
u8* target_pointer = Memory::GetPhysicalPointer(area->paddr_base + offset_into_region);
// TODO(yuriks): This flag seems to have some other effect, but it's unknown what
MemoryState memory_state = mapping.unk_flag ? MemoryState::Static : MemoryState::IO;
auto vma = address_space
.MapBackingMemory(mapping.address, target_pointer + offset_into_region,
mapping.size, memory_state)
.Unwrap();
auto vma =
address_space.MapBackingMemory(mapping.address, target_pointer, mapping.size, memory_state)
.Unwrap();
address_space.Reprotect(vma,
mapping.read_only ? VMAPermission::Read : VMAPermission::ReadWrite);
}

2
src/core/hle/kernel/memory.h
View file

@ -26,4 +26,6 @@ MemoryRegionInfo* GetMemoryRegion(MemoryRegion region);
void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mapping);
void MapSharedPages(VMManager& address_space);
extern MemoryRegionInfo memory_regions[3];
} // namespace Kernel