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added preliminary DataSynchronizationBarrier support with simple DMA copy

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This commit is contained in:
bunnei 2014-04-26 01:47:52 -04:00
parent 25d595d869
commit a272803dcb
1 changed files with 39 additions and 7 deletions
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46
src/core/hle/mrc.cpp
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@ -1,10 +1,43 @@
#include "mrc.h"
#include "hle.h"
// 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 CallGetThreadCommandBuffer() {
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);
@ -16,14 +49,13 @@ u32 CallMRC(ARM11_MRC_OPERATION operation) {
switch (operation) {
case DATA_SYNCHRONIZATION_BARRIER:
ERROR_LOG(OSHLE, "Unimplemented MRC operation DATA_SYNCHRONIZATION_BARRIER");
break;
return DataSynchronizationBarrier((u32*)Memory::GetPointer(PARAM(0)));
case CALL_GET_THREAD_COMMAND_BUFFER:
return CallGetThreadCommandBuffer();
return GetThreadCommandBuffer();
default:
ERROR_LOG(OSHLE, "Unimplemented MRC operation 0x%02X", operation);
ERROR_LOG(OSHLE, "unimplemented MRC operation 0x%02X", operation);
break;
}
return -1;