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
|
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "core/hle/mrc.h"
#include "core/hle/hle.h"
#include "core/mem_map.h"
#include "core/core.h"
namespace HLE {
enum {
CMD_GX_REQUEST_DMA = 0x00000000,
};
/// Data synchronization barrier
u32 DataSynchronizationBarrier(u32* command_buffer) {
u32 command = command_buffer[0];
switch (command) {
case CMD_GX_REQUEST_DMA:
{
u32* src = (u32*)Memory::GetPointer(command_buffer[1]);
u32* dst = (u32*)Memory::GetPointer(command_buffer[2]);
u32 size = command_buffer[3];
memcpy(dst, src, size);
}
break;
default:
ERROR_LOG(OSHLE, "MRC::DataSynchronizationBarrier unknown command 0x%08X", command);
return -1;
}
return 0;
}
/// Returns the coprocessor (in this case, syscore) command buffer pointer
Addr GetThreadCommandBuffer() {
// Called on insruction: mrc p15, 0, r0, c13, c0, 3
// Returns an address in OSHLE memory for the CPU to read/write to
RETURN(CMD_BUFFER_ADDR);
return CMD_BUFFER_ADDR;
}
/// Call an MRC operation in HLE
u32 CallMRC(ARM11_MRC_OPERATION operation) {
switch (operation) {
case DATA_SYNCHRONIZATION_BARRIER:
return DataSynchronizationBarrier((u32*)Memory::GetPointer(PARAM(0)));
case CALL_GET_THREAD_COMMAND_BUFFER:
return GetThreadCommandBuffer();
default:
ERROR_LOG(OSHLE, "unimplemented MRC operation 0x%02X", operation);
break;
}
return -1;
}
} // namespace
|
