Merge pull request #15 from bunnei/hle-services

Various fixes/improvements to HLE of 3DS services, mostly cleans up GSP call decoding

1 files changed, 50 insertions, 0 deletions

diff --git a/src/core/hle/coprocessor.cpp b/src/core/hle/coprocessor.cpp
new file mode 100644
index 000000000..74305331c
--- /dev/null
+++ b/src/core/hle/coprocessor.cpp
@@ -0,0 +1,50 @@
+// 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 {
+
+/// Data synchronization barrier
+u32 DataSynchronizationBarrier() {
+    return 0;
+}
+
+/// Returns the coprocessor (in this case, syscore) command buffer pointer
+Addr GetThreadCommandBuffer() {
+    // Called on insruction: mrc p15, 0, r0, c13, c0, 3
+    return Memory::KERNEL_MEMORY_VADDR;
+}
+
+/// 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 0;
+}
+
+/// 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();
+
+    case CALL_GET_THREAD_COMMAND_BUFFER:
+        return GetThreadCommandBuffer();
+
+    default:
+        ERROR_LOG(OSHLE, "unimplemented MRC instruction 0x%08X", instruction);
+        break;
+    }
+    return 0;
+}
+
+} // namespace