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kernel/transfer_memory: Add accessors to data and sizes
Also amend erroneous use of size_t. We should be using u64 here.
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7931a68d4e
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140cd5e209
@ -14,8 +14,8 @@ namespace Kernel {
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TransferMemory::TransferMemory(KernelCore& kernel) : Object{kernel} {}
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TransferMemory::~TransferMemory() = default;
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SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_address,
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size_t size, MemoryPermission permissions) {
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SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_address, u64 size,
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MemoryPermission permissions) {
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SharedPtr<TransferMemory> transfer_memory{new TransferMemory(kernel)};
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transfer_memory->base_address = base_address;
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@ -26,7 +26,15 @@ SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_
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return transfer_memory;
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}
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ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermission permissions) {
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const u8* TransferMemory::GetPointer() const {
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return backing_block.get()->data();
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}
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u64 TransferMemory::GetSize() const {
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return memory_size;
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}
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ResultCode TransferMemory::MapMemory(VAddr address, u64 size, MemoryPermission permissions) {
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if (memory_size != size) {
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return ERR_INVALID_SIZE;
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}
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@ -39,13 +47,13 @@ ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermissio
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return ERR_INVALID_STATE;
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}
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backing_block = std::make_shared<std::vector<u8>>(size);
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const auto map_state = owner_permissions == MemoryPermission::None
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? MemoryState::TransferMemoryIsolated
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: MemoryState::TransferMemory;
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auto& vm_manager = owner_process->VMManager();
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const auto map_result = vm_manager.MapMemoryBlock(
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address, std::make_shared<std::vector<u8>>(size), 0, size, map_state);
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const auto map_result = vm_manager.MapMemoryBlock(address, backing_block, 0, size, map_state);
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if (map_result.Failed()) {
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return map_result.Code();
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}
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@ -54,7 +62,7 @@ ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermissio
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return RESULT_SUCCESS;
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}
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ResultCode TransferMemory::UnmapMemory(VAddr address, size_t size) {
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ResultCode TransferMemory::UnmapMemory(VAddr address, u64 size) {
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if (memory_size != size) {
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return ERR_INVALID_SIZE;
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}
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@ -4,6 +4,9 @@
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#pragma once
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#include <memory>
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#include <vector>
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#include "core/hle/kernel/object.h"
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union ResultCode;
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@ -25,7 +28,7 @@ class TransferMemory final : public Object {
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public:
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static constexpr HandleType HANDLE_TYPE = HandleType::TransferMemory;
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static SharedPtr<TransferMemory> Create(KernelCore& kernel, VAddr base_address, size_t size,
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static SharedPtr<TransferMemory> Create(KernelCore& kernel, VAddr base_address, u64 size,
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MemoryPermission permissions);
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TransferMemory(const TransferMemory&) = delete;
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@ -46,6 +49,12 @@ public:
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return HANDLE_TYPE;
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}
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/// Gets a pointer to the backing block of this instance.
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const u8* GetPointer() const;
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/// Gets the size of the memory backing this instance in bytes.
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u64 GetSize() const;
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/// Attempts to map transfer memory with the given range and memory permissions.
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///
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/// @param address The base address to being mapping memory at.
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@ -56,7 +65,7 @@ public:
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/// the same values that were given when creating the transfer memory
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/// instance.
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///
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ResultCode MapMemory(VAddr address, size_t size, MemoryPermission permissions);
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ResultCode MapMemory(VAddr address, u64 size, MemoryPermission permissions);
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/// Unmaps the transfer memory with the given range
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///
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@ -66,17 +75,20 @@ public:
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/// @pre The given address and size must be the same as the ones used
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/// to create the transfer memory instance.
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///
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ResultCode UnmapMemory(VAddr address, size_t size);
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ResultCode UnmapMemory(VAddr address, u64 size);
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private:
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explicit TransferMemory(KernelCore& kernel);
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~TransferMemory() override;
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/// Memory block backing this instance.
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std::shared_ptr<std::vector<u8>> backing_block;
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/// The base address for the memory managed by this instance.
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VAddr base_address = 0;
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/// Size of the memory, in bytes, that this instance manages.
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size_t memory_size = 0;
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u64 memory_size = 0;
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/// The memory permissions that are applied to this instance.
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MemoryPermission owner_permissions{};
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