From 4905743e0a5bf9ab50ba1d0fdbeba370ccc649c4 Mon Sep 17 00:00:00 2001
From: anthony cantor <ar.cantor@gmail.com>
Date: Sun, 11 Aug 2013 00:41:28 -0600
Subject: [PATCH] add BytesMemoryObject to extra.h and a binding for it in
 llvmpy/src

---
 llvmpy/include/llvm_binding/extra.h | 26 ++++++++++++++++++++++++++
 llvmpy/src/BytesMemoryObject.py     | 17 +++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 llvmpy/src/BytesMemoryObject.py

diff --git a/llvmpy/include/llvm_binding/extra.h b/llvmpy/include/llvm_binding/extra.h
index 161c52e..d4578af 100644
--- a/llvmpy/include/llvm_binding/extra.h
+++ b/llvmpy/include/llvm_binding/extra.h
@@ -29,11 +29,36 @@
 #include <llvm/Analysis/Verifier.h>
 #include <llvm/PassRegistry.h>
 #include <llvm/Support/Host.h>
+#include <llvm/Support/MemoryObject.h>
 
 #include <llvm/ExecutionEngine/MCJIT.h> // to make MCJIT working
 
 #include "auto_pyobject.h"
 
+namespace llvm {
+
+class BytesMemoryObject : public MemoryObject {
+private:
+  StringRef m_bytes;
+
+public:
+  BytesMemoryObject(StringRef bytes) {
+    m_bytes = bytes;
+  }
+
+  uint64_t getBase() const { return 0; }
+  uint64_t getExtent() const { return (uint64_t) m_bytes.size(); }
+
+  int readByte(uint64_t addr, uint8_t *byte) const {
+    if (addr >= getExtent())
+      return -1;
+    *byte = (uint8_t) m_bytes[(size_t) addr];
+    return 0;
+  }
+};
+
+}
+
 namespace extra{
     using namespace llvm;
     
@@ -984,3 +1009,4 @@ PyObject* llvm_sys_isBigEndianHost()
         Py_RETURN_FALSE;
 }
 #endif 
+
diff --git a/llvmpy/src/BytesMemoryObject.py b/llvmpy/src/BytesMemoryObject.py
new file mode 100644
index 0000000..051425e
--- /dev/null
+++ b/llvmpy/src/BytesMemoryObject.py
@@ -0,0 +1,17 @@
+from binding import *
+from .namespace import llvm
+from .ADT.StringRef import StringRef
+
+MemoryObject = llvm.Class()
+BytesMemoryObject = llvm.Class(MemoryObject)
+
+@MemoryObject
+class MemoryObject:
+	pass
+
+@BytesMemoryObject
+class BytesMemoryObject:
+	new = Constructor(cast(bytes, StringRef))
+
+	getBase = Method(cast(Uint64, int))
+	getExtent = Method(cast(Uint64, int))