Expose dwarf constants for debug info generation

llvm/_dwarf.cpp

@@ -0,0 +1,86 @@
+#include <Python.h>
+#include <llvm/Support/Dwarf.h>
+
+namespace llvmpy {
+namespace dwarf {
+
+using namespace llvm::dwarf;
+
+const char *constant_names[] = {
+    "LLVMDebugVersion",
+
+    #define define(x) #x,
+    #include "_dwarf.h"
+    #undef define
+};
+
+int constant_values[] = {
+    llvm::LLVMDebugVersion,
+
+    #define define(x) x,
+    #include "_dwarf.h"
+    #undef define
+};
+
+enum enum_values {
+    __llvmpy_LLVMDebugVersion,
+
+    #define define(x) __llvmpy_##x,
+    #include "_dwarf.h"
+    #undef define
+
+    NVALUES /* Get the number of constants */
+};
+
+} // End namespace dwarf
+
+int
+set_dwarf_constants(PyObject *module)
+{
+    int i;
+    for (i = 0; i < dwarf::NVALUES; i++) {
+        if (PyModule_AddIntConstant(module, dwarf::constant_names[i],
+                                    dwarf::constant_values[i]) > 0)
+            return -1;
+    }
+
+    return 0;
+}
+
+} // End namespace llvmpy
+
+#if (PY_MAJOR_VERSION >= 3)
+    struct PyModuleDef module_def = {
+        PyModuleDef_HEAD_INIT,
+        "_dwarf",
+        NULL,
+        -1,
+        NULL, /* m_methods */
+        NULL, /* m_reload */
+        NULL, /* m_traverse */
+        NULL, /* m_clear */
+        NULL, /* m_free */
+    };
+
+    #define INITERROR return NULL
+    PyObject *PyInit__dwarf(void)
+#else
+    #define INITERROR return
+    PyMODINIT_FUNC init_dwarf(void)
+#endif
+{
+#if PY_MAJOR_VERSION >= 3
+    PyObject *module = PyModule_Create( &module_def );
+#else
+    PyObject *module = Py_InitModule("_dwarf", NULL);
+#endif
+    if (module == NULL)
+        INITERROR;
+
+    if (llvmpy::set_dwarf_constants(module) < 0)
+        INITERROR;
+
+#if PY_MAJOR_VERSION >= 3
+    return module;
+#endif
+}