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kernel/transfer_memory: Add accessors to data and sizes

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Also amend erroneous use of size_t. We should be using u64 here.
This commit is contained in:
Lioncash 2019-04-03 16:31:26 -04:00
parent 7931a68d4e
commit 140cd5e209
2 changed files with 31 additions and 11 deletions
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22
src/core/hle/kernel/transfer_memory.cpp
View file

@ -14,8 +14,8 @@ namespace Kernel {
TransferMemory::TransferMemory(KernelCore& kernel) : Object{kernel} {}
TransferMemory::~TransferMemory() = default;
SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_address,
size_t size, MemoryPermission permissions) {
SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_address, u64 size,
MemoryPermission permissions) {
SharedPtr<TransferMemory> transfer_memory{new TransferMemory(kernel)};
transfer_memory->base_address = base_address;
@ -26,7 +26,15 @@ SharedPtr<TransferMemory> TransferMemory::Create(KernelCore& kernel, VAddr base_
return transfer_memory;
}
ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermission permissions) {
const u8* TransferMemory::GetPointer() const {
return backing_block.get()->data();
}
u64 TransferMemory::GetSize() const {
return memory_size;
}
ResultCode TransferMemory::MapMemory(VAddr address, u64 size, MemoryPermission permissions) {
if (memory_size != size) {
return ERR_INVALID_SIZE;
}
@ -39,13 +47,13 @@ ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermissio
return ERR_INVALID_STATE;
}
backing_block = std::make_shared<std::vector<u8>>(size);
const auto map_state = owner_permissions == MemoryPermission::None
? MemoryState::TransferMemoryIsolated
: MemoryState::TransferMemory;
auto& vm_manager = owner_process->VMManager();
const auto map_result = vm_manager.MapMemoryBlock(
address, std::make_shared<std::vector<u8>>(size), 0, size, map_state);
const auto map_result = vm_manager.MapMemoryBlock(address, backing_block, 0, size, map_state);
if (map_result.Failed()) {
return map_result.Code();
}
@ -54,7 +62,7 @@ ResultCode TransferMemory::MapMemory(VAddr address, size_t size, MemoryPermissio
return RESULT_SUCCESS;
}
ResultCode TransferMemory::UnmapMemory(VAddr address, size_t size) {
ResultCode TransferMemory::UnmapMemory(VAddr address, u64 size) {
if (memory_size != size) {
return ERR_INVALID_SIZE;
}

20
src/core/hle/kernel/transfer_memory.h
View file

@ -4,6 +4,9 @@
#pragma once
#include <memory>
#include <vector>
#include "core/hle/kernel/object.h"
union ResultCode;
@ -25,7 +28,7 @@ class TransferMemory final : public Object {
public:
static constexpr HandleType HANDLE_TYPE = HandleType::TransferMemory;
static SharedPtr<TransferMemory> Create(KernelCore& kernel, VAddr base_address, size_t size,
static SharedPtr<TransferMemory> Create(KernelCore& kernel, VAddr base_address, u64 size,
MemoryPermission permissions);
TransferMemory(const TransferMemory&) = delete;
@ -46,6 +49,12 @@ public:
return HANDLE_TYPE;
}
/// Gets a pointer to the backing block of this instance.
const u8* GetPointer() const;
/// Gets the size of the memory backing this instance in bytes.
u64 GetSize() const;
/// Attempts to map transfer memory with the given range and memory permissions.
///
/// @param address The base address to being mapping memory at.
@ -56,7 +65,7 @@ public:
/// the same values that were given when creating the transfer memory
/// instance.
///
ResultCode MapMemory(VAddr address, size_t size, MemoryPermission permissions);
ResultCode MapMemory(VAddr address, u64 size, MemoryPermission permissions);
/// Unmaps the transfer memory with the given range
///
@ -66,17 +75,20 @@ public:
/// @pre The given address and size must be the same as the ones used
/// to create the transfer memory instance.
///
ResultCode UnmapMemory(VAddr address, size_t size);
ResultCode UnmapMemory(VAddr address, u64 size);
private:
explicit TransferMemory(KernelCore& kernel);
~TransferMemory() override;
/// Memory block backing this instance.
std::shared_ptr<std::vector<u8>> backing_block;
/// The base address for the memory managed by this instance.
VAddr base_address = 0;
/// Size of the memory, in bytes, that this instance manages.
size_t memory_size = 0;
u64 memory_size = 0;
/// The memory permissions that are applied to this instance.
MemoryPermission owner_permissions{};