1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/common.h"
#include "core/mem_map.h"
#include "core/hle/kernel/shared_memory.h"
namespace Kernel {
class SharedMemory : public Object {
public:
std::string GetTypeName() const override { return "SharedMemory"; }
static Kernel::HandleType GetStaticHandleType() { return Kernel::HandleType::SharedMemory; }
Kernel::HandleType GetHandleType() const override { return Kernel::HandleType::SharedMemory; }
/**
* Wait for kernel object to synchronize
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result WaitSynchronization(bool* wait) override {
// TODO(bunnei): ImplementMe
ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
return 0;
}
u32 base_address; ///< Address of shared memory block in RAM
MemoryPermission permissions; ///< Permissions of shared memory block (SVC field)
MemoryPermission other_permissions; ///< Other permissions of shared memory block (SVC field)
std::string name; ///< Name of shared memory object (optional)
};
////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Creates a shared memory object
* @param handle Handle of newly created shared memory object
* @param name Name of shared memory object
* @return Pointer to newly created shared memory object
*/
SharedMemory* CreateSharedMemory(Handle& handle, const std::string& name) {
SharedMemory* shared_memory = new SharedMemory;
handle = Kernel::g_object_pool.Create(shared_memory);
shared_memory->name = name;
return shared_memory;
}
/**
* Creates a shared memory object
* @param name Optional name of shared memory object
* @return Handle of newly created shared memory object
*/
Handle CreateSharedMemory(const std::string& name) {
Handle handle;
CreateSharedMemory(handle, name);
return handle;
}
/**
* Maps a shared memory block to an address in system memory
* @param handle Shared memory block handle
* @param address Address in system memory to map shared memory block to
* @param permissions Memory block map permissions (specified by SVC field)
* @param other_permissions Memory block map other permissions (specified by SVC field)
* @return Result of operation, 0 on success, otherwise error code
*/
Result MapSharedMemory(u32 handle, u32 address, MemoryPermission permissions,
MemoryPermission other_permissions) {
if (address < Memory::SHARED_MEMORY_VADDR || address >= Memory::SHARED_MEMORY_VADDR_END) {
ERROR_LOG(KERNEL, "cannot map handle=0x%08X, address=0x%08X outside of shared mem bounds!",
handle);
return -1;
}
SharedMemory* shared_memory = Kernel::g_object_pool.GetFast<SharedMemory>(handle);
_assert_msg_(KERNEL, (shared_memory != nullptr), "handle 0x%08X is not valid!", handle);
shared_memory->base_address = address;
shared_memory->permissions = permissions;
shared_memory->other_permissions = other_permissions;
return 0;
}
/**
* Gets a pointer to the shared memory block
* @param handle Shared memory block handle
* @param offset Offset from the start of the shared memory block to get pointer
* @return Pointer to the shared memory block from the specified offset
*/
u8* GetSharedMemoryPointer(Handle handle, u32 offset) {
SharedMemory* shared_memory = Kernel::g_object_pool.GetFast<SharedMemory>(handle);
_assert_msg_(KERNEL, (shared_memory != nullptr), "handle 0x%08X is not valid!", handle);
if (0 != shared_memory->base_address)
return Memory::GetPointer(shared_memory->base_address + offset);
ERROR_LOG(KERNEL, "memory block handle=0x%08X not mapped!", handle);
return nullptr;
}
} // namespace
|
