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core/memory: Create a special MapMemoryRegion for physical memory.

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This allows us to create a fastmem arena within the memory.cpp helpers.
This commit is contained in:
Markus Wick 2020-01-12 17:04:15 +01:00
parent 55103da066
commit 56672b8c98
4 changed files with 31 additions and 4 deletions
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5
src/core/hle/kernel/physical_memory.h
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@ -14,6 +14,9 @@ namespace Kernel {
// - Second to ensure all host backing memory used is aligned to 256 bytes due
// to strict alignment restrictions on GPU memory.
using PhysicalMemory = std::vector<u8, Common::AlignmentAllocator<u8, 256>>;
using PhysicalMemoryVector = std::vector<u8, Common::AlignmentAllocator<u8, 256>>;
class PhysicalMemory final : public PhysicalMemoryVector {
using PhysicalMemoryVector::PhysicalMemoryVector;
};
} // namespace Kernel

3
src/core/hle/kernel/vm_manager.cpp
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@ -780,8 +780,7 @@ void VMManager::UpdatePageTableForVMA(const VirtualMemoryArea& vma) {
memory.UnmapRegion(page_table, vma.base, vma.size);
break;
case VMAType::AllocatedMemoryBlock:
memory.MapMemoryRegion(page_table, vma.base, vma.size,
vma.backing_block->data() + vma.offset);
memory.MapMemoryRegion(page_table, vma.base, vma.size, *vma.backing_block, vma.offset);
break;
case VMAType::BackingMemory:
memory.MapMemoryRegion(page_table, vma.base, vma.size, vma.backing_memory);

11
src/core/memory.cpp
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@ -14,6 +14,7 @@
#include "common/swap.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/hle/kernel/physical_memory.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/vm_manager.h"
#include "core/memory.h"
@ -38,6 +39,11 @@ struct Memory::Impl {
system.ArmInterface(3).PageTableChanged(*current_page_table, address_space_width);
}
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size,
Kernel::PhysicalMemory& memory, VAddr offset) {
MapMemoryRegion(page_table, base, size, memory.data() + offset);
}
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, u8* target) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: {:016X}", base);
@ -601,6 +607,11 @@ void Memory::SetCurrentPageTable(Kernel::Process& process) {
impl->SetCurrentPageTable(process);
}
void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size,
Kernel::PhysicalMemory& memory, VAddr offset) {
impl->MapMemoryRegion(page_table, base, size, memory, offset);
}
void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, u8* target) {
impl->MapMemoryRegion(page_table, base, size, target);
}

16
src/core/memory.h
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@ -19,8 +19,9 @@ class System;
}
namespace Kernel {
class PhysicalMemory;
class Process;
}
} // namespace Kernel
namespace Memory {
@ -65,6 +66,19 @@ public:
*/
void SetCurrentPageTable(Kernel::Process& process);
/**
* Maps an physical buffer onto a region of the emulated process address space.
*
* @param page_table The page table of the emulated process.
* @param base The address to start mapping at. Must be page-aligned.
* @param size The amount of bytes to map. Must be page-aligned.
* @param memory Physical buffer with the memory backing the mapping. Must be of length
* at least `size + offset`.
* @param offset The offset within the physical memory. Must be page-aligned.
*/
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size,
Kernel::PhysicalMemory& memory, VAddr offset);
/**
* Maps an allocated buffer onto a region of the emulated process address space.
*