1 files changed, 117 insertions, 0 deletions
diff --git a/lldb/source/Expression/IRDynamicChecks.cpp b/lldb/source/Expression/IRDynamicChecks.cpp
new file mode 100644
index 00000000000..21fd7d26250
--- /dev/null
+++ b/lldb/source/Expression/IRDynamicChecks.cpp
@@ -0,0 +1,117 @@
+//===-- IRDynamicChecks.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/Expression/IRDynamicChecks.h"
+#include "lldb/Expression/ClangUtilityFunction.h"
+
+#include "lldb/Core/Log.h"
+
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Function.h"
+#include "llvm/Module.h"
+#include "llvm/Value.h"
+
+using namespace llvm;
+using namespace lldb_private;
+
+static char ID;
+
+static const char valid_pointer_check_text[] = 
+    "extern \"C\" void "
+    "___clang_valid_pointer_check (unsigned char *ptr)"
+    "{"
+        "unsigned char val = *ptr;"
+    "}";
+
+static const char valid_pointer_check_name[] = 
+    "___clang_valid_pointer_check";
+
+DynamicCheckerFunctions::DynamicCheckerFunctions ()
+{
+    m_valid_pointer_check.reset(new ClangUtilityFunction(valid_pointer_check_text,
+                                                         valid_pointer_check_name));
+}
+
+DynamicCheckerFunctions::~DynamicCheckerFunctions ()
+{
+}
+
+bool
+DynamicCheckerFunctions::Install(Stream &error_stream,
+                                 ExecutionContext &exe_ctx)
+{
+    if (!m_valid_pointer_check->Install(error_stream, exe_ctx))
+        return false;
+        
+    return true;
+}
+
+IRDynamicChecks::IRDynamicChecks(DynamicCheckerFunctions &checker_functions,
+                                 const char *func_name) :
+    ModulePass(&ID),
+    m_checker_functions(checker_functions),
+    m_func_name(func_name)
+{
+}
+
+/* A handy utility function used at several places in the code */
+
+static std::string 
+PrintValue(llvm::Value *V, bool truncate = false)
+{
+    std::string s;
+    raw_string_ostream rso(s);
+    V->print(rso);
+    rso.flush();
+    if (truncate)
+        s.resize(s.length() - 1);
+    return s;
+}
+
+IRDynamicChecks::~IRDynamicChecks()
+{
+}
+
+bool
+IRDynamicChecks::runOnModule(llvm::Module &M)
+{
+    lldb_private::Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS);
+    
+    llvm::Function* function = M.getFunction(StringRef(m_func_name.c_str()));
+    
+    if (!function)
+    {
+        if (log)
+            log->Printf("Couldn't find %s() in the module", m_func_name.c_str());
+        
+        return false;
+    }
+    
+    llvm::Function::iterator bbi;
+    
+    for (bbi = function->begin();
+         bbi != function->end();
+         ++bbi)
+    {
+    }
+    
+    return true;    
+}
+
+void
+IRDynamicChecks::assignPassManager(PMStack &PMS,
+                                   PassManagerType T)
+{
+}
+
+PassManagerType
+IRDynamicChecks::getPotentialPassManagerType() const
+{
+    return PMT_ModulePassManager;
+}