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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "core/hle/coprocessor.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 MCR (move to coprocessor from ARM register) instruction in HLE
s32 CallMCR(u32 instruction, u32 value) {
CoprocessorOperation operation = (CoprocessorOperation)((instruction >> 20) & 0xFF);
ERROR_LOG(OSHLE, "unimplemented MCR instruction=0x%08X, operation=%02X, value=%08X",
instruction, operation, value);
return -1;
}
/// Call an MRC (move to ARM register from coprocessor) instruction in HLE
s32 CallMRC(u32 instruction) {
CoprocessorOperation operation = (CoprocessorOperation)((instruction >> 20) & 0xFF);
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 instruction 0x%08X", instruction);
break;
}
return -1;
}
} // namespace
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