vendor/lldb/lldb-r225923

1 files changed, 157 insertions, 0 deletions

diff --git a/source/Utility/RegisterNumber.cpp b/source/Utility/RegisterNumber.cpp
new file mode 100644
index 000000000000..8116cda10fe5
--- /dev/null
+++ b/source/Utility/RegisterNumber.cpp
@@ -0,0 +1,157 @@
+//===--------------------- RegisterNumber.cpp -------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Utility/RegisterNumber.h"
+#include "lldb/Target/Thread.h"
+#include "lldb/Target/RegisterContext.h"
+
+using namespace lldb_private;
+
+
+RegisterNumber::RegisterNumber (lldb_private::Thread &thread, lldb::RegisterKind kind, uint32_t num) :
+    m_reg_ctx_sp (thread.GetRegisterContext()),
+    m_regnum (num),
+    m_kind (kind),
+    m_kind_regnum_map (),
+    m_name ("")
+{
+    if (m_reg_ctx_sp.get())
+    {
+        const lldb_private::RegisterInfo *reginfo = m_reg_ctx_sp->GetRegisterInfoAtIndex (GetAsKind (lldb::eRegisterKindLLDB));
+        if (reginfo && reginfo->name)
+        {
+            m_name = reginfo->name;
+        }
+    }
+}
+
+RegisterNumber::RegisterNumber () :
+    m_reg_ctx_sp(),
+    m_regnum (LLDB_INVALID_REGNUM),
+    m_kind (lldb::kNumRegisterKinds),
+    m_kind_regnum_map (),
+    m_name (nullptr)
+{
+}
+
+void
+RegisterNumber::init (lldb_private::Thread &thread, lldb::RegisterKind kind, uint32_t num)
+{
+    m_reg_ctx_sp = thread.GetRegisterContext();
+    m_regnum = num;
+    m_kind = kind;
+    if (m_reg_ctx_sp.get())
+    {
+        const lldb_private::RegisterInfo *reginfo = m_reg_ctx_sp->GetRegisterInfoAtIndex (GetAsKind (lldb::eRegisterKindLLDB));
+        if (reginfo && reginfo->name)
+        {
+            m_name = reginfo->name;
+        }
+    }
+}
+
+const RegisterNumber &
+RegisterNumber::operator = (const RegisterNumber &rhs)
+{
+    m_reg_ctx_sp = rhs.m_reg_ctx_sp;
+    m_regnum = rhs.m_regnum;
+    m_kind = rhs.m_kind;
+    for (auto it : rhs.m_kind_regnum_map)
+        m_kind_regnum_map[it.first] = it.second;
+    m_name = rhs.m_name;
+    return *this;
+}
+
+bool
+RegisterNumber::operator == (RegisterNumber &rhs)
+{
+    if (IsValid() != rhs.IsValid())
+        return false;
+
+    if (m_kind == rhs.m_kind)
+    {
+        if (m_regnum == rhs.m_regnum)
+            return true;
+        else
+            return false;
+    }
+
+    uint32_t rhs_regnum = rhs.GetAsKind (m_kind);
+    if (rhs_regnum != LLDB_INVALID_REGNUM)
+    {
+        if (m_regnum == rhs_regnum)
+            return true;
+        else
+            return false;
+    }
+    uint32_t lhs_regnum = GetAsKind (rhs.m_kind);
+    {
+        if (lhs_regnum == rhs.m_regnum)
+            return true;
+        else 
+            return false;
+    }
+    return false;
+}
+
+bool
+RegisterNumber::operator != (RegisterNumber &rhs)
+{
+    return !(*this == rhs);
+}
+
+bool
+RegisterNumber::IsValid () const
+{
+    return m_reg_ctx_sp.get()
+        && m_kind != lldb::kNumRegisterKinds 
+        && m_regnum != LLDB_INVALID_REGNUM;
+}
+
+uint32_t
+RegisterNumber::GetAsKind (lldb::RegisterKind kind)
+{
+    if (m_regnum == LLDB_INVALID_REGNUM)
+        return LLDB_INVALID_REGNUM;
+
+    if (kind == m_kind)
+        return m_regnum;
+
+    Collection::iterator iter = m_kind_regnum_map.find (kind);
+    if (iter != m_kind_regnum_map.end())
+    {
+        return iter->second;
+    }
+    uint32_t output_regnum = LLDB_INVALID_REGNUM;
+    if (m_reg_ctx_sp 
+        && m_reg_ctx_sp->ConvertBetweenRegisterKinds (m_kind, m_regnum, kind, output_regnum)
+        && output_regnum != LLDB_INVALID_REGNUM)
+    {
+        m_kind_regnum_map[kind] = output_regnum;
+    }
+    return output_regnum;
+}
+
+uint32_t
+RegisterNumber::GetRegisterNumber () const
+{
+    return m_regnum;
+}
+
+lldb::RegisterKind
+RegisterNumber::GetRegisterKind () const
+{
+    return m_kind;
+}
+
+const char *
+RegisterNumber::GetName ()
+{
+    return m_name;
+}