1 files changed, 83 insertions, 0 deletions
diff --git a/src/debug/shared/arm64/primitives.cpp b/src/debug/shared/arm64/primitives.cpp
new file mode 100644
index 0000000000..1e351d676d
--- /dev/null
+++ b/src/debug/shared/arm64/primitives.cpp
@@ -0,0 +1,83 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+//*****************************************************************************
+// File: primitives.cpp
+// 
+
+//
+// Platform-specific debugger primitives
+//
+//*****************************************************************************
+
+#include "primitives.h"
+
+
+//
+// CopyThreadContext() does an intelligent copy from pSrc to pDst,
+// respecting the ContextFlags of both contexts.
+//
+void CORDbgCopyThreadContext(DT_CONTEXT* pDst, const DT_CONTEXT* pSrc)
+{
+    DWORD dstFlags = pDst->ContextFlags;
+    DWORD srcFlags = pSrc->ContextFlags;
+    LOG((LF_CORDB, LL_INFO1000000,
+         "CP::CTC: pDst=0x%08x dstFlags=0x%x, pSrc=0x%08x srcFlags=0x%x\n",
+         pDst, dstFlags, pSrc, srcFlags));
+
+    if ((dstFlags & srcFlags & DT_CONTEXT_CONTROL) == DT_CONTEXT_CONTROL)
+    {
+        CopyContextChunk(&(pDst->Fp), &(pSrc->Fp), &(pDst->V),
+                         DT_CONTEXT_CONTROL);
+        CopyContextChunk(&(pDst->Cpsr), &(pSrc->Cpsr), &(pDst->X),
+                         DT_CONTEXT_CONTROL);
+    }
+    
+    if ((dstFlags & srcFlags & DT_CONTEXT_INTEGER) == DT_CONTEXT_INTEGER)
+        CopyContextChunk(&(pDst->X[0]), &(pSrc->X[0]), &(pDst->Fp),
+                         DT_CONTEXT_INTEGER);
+
+    if ((dstFlags & srcFlags & DT_CONTEXT_FLOATING_POINT) == DT_CONTEXT_FLOATING_POINT)
+        CopyContextChunk(&(pDst->V[0]), &(pSrc->V[0]), &(pDst->Bcr[0]),
+                         DT_CONTEXT_FLOATING_POINT);
+
+    if ((dstFlags & srcFlags & DT_CONTEXT_DEBUG_REGISTERS) ==
+        DT_CONTEXT_DEBUG_REGISTERS)
+        CopyContextChunk(&(pDst->Bcr[0]), &(pSrc->Bcr[0]), &(pDst->Wvr[ARM64_MAX_WATCHPOINTS]),
+                         DT_CONTEXT_DEBUG_REGISTERS);
+}
+
+#if defined(ALLOW_VMPTR_ACCESS) || !defined(RIGHT_SIDE_COMPILE)
+void SetDebuggerREGDISPLAYFromREGDISPLAY(DebuggerREGDISPLAY* pDRD, REGDISPLAY* pRD)
+{
+    SUPPORTS_DAC_HOST_ONLY;
+
+    DT_CONTEXT* pContext = reinterpret_cast<DT_CONTEXT*>(pRD->pCurrentContext);
+
+    // We must pay attention to the context flags so that we only use valid portions
+    // of the context.
+    DWORD flags = pContext->ContextFlags;
+    if ((flags & DT_CONTEXT_CONTROL) == DT_CONTEXT_CONTROL)
+    {
+        pDRD->FP = (SIZE_T)CORDbgGetFP(pContext);
+        pDRD->LR = (SIZE_T)pContext->Lr;
+        pDRD->PC = (SIZE_T)pContext->Pc;
+    }
+
+    if ((flags & DT_CONTEXT_INTEGER) == DT_CONTEXT_INTEGER)
+    {
+        for(int i = 0 ; i < 29 ; i++)
+        {
+           pDRD->X[i] = (SIZE_T)pContext->X[i];
+        }
+    }
+
+    pDRD->SP   = pRD->SP;
+
+    LOG( (LF_CORDB, LL_INFO1000, "DT::TASSC:Registers:"
+          "SP = %x",
+          pDRD->SP) );
+}
+#endif // ALLOW_VMPTR_ACCESS || !RIGHT_SIDE_COMPILE
+
+