65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// 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
|