+ s_mc_location_list_t frame_base;
+ xbt_dynar_t /* <dw_variable_t> */ variables; /* Cannot use dict, there may be several variables with the same name (in different lexical blocks)*/
+ unsigned long int id; /* DWARF offset of the subprogram */
+ xbt_dynar_t /* <dw_frame_t> */ scopes;
+ Dwarf_Off abstract_origin_id;
+ mc_object_info_t object_info;
+};
+
+struct s_mc_function_index_item {
+ void* low_pc, *high_pc;
+ dw_frame_t function;
+};
+
+void mc_frame_free(dw_frame_t freme);
+
+void dw_type_free(dw_type_t t);
+void dw_variable_free(dw_variable_t v);
+void dw_variable_free_voidp(void *t);
+
+void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t variable);
+void MC_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
+void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
+void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
+
+/** Find the DWARF offset for this ELF object
+ *
+ * An offset is applied to address found in DWARF:
+ *
+ * <ul>
+ * <li>for an executable obejct, addresses are virtual address
+ * (there is no offset) i.e. \f$\text{virtual address} = \{dwarf address}\f$;</li>
+ * <li>for a shared object, the addreses are offset from the begining
+ * of the shared object (the base address of the mapped shared
+ * object must be used as offset
+ * i.e. \f$\text{virtual address} = \text{shared object base address}
+ * + \text{dwarf address}\f$.</li>
+ *
+ */
+void* MC_object_base_address(mc_object_info_t info);
+
+/********************************** DWARF **********************************/
+
+#define MC_EXPRESSION_STACK_SIZE 64
+
+#define MC_EXPRESSION_OK 0
+#define MC_EXPRESSION_E_UNSUPPORTED_OPERATION 1
+#define MC_EXPRESSION_E_STACK_OVERFLOW 2
+#define MC_EXPRESSION_E_STACK_UNDERFLOW 3
+#define MC_EXPRESSION_E_MISSING_STACK_CONTEXT 4
+#define MC_EXPRESSION_E_MISSING_FRAME_BASE 5
+#define MC_EXPRESSION_E_NO_BASE_ADDRESS 6
+
+typedef struct s_mc_expression_state {
+ uintptr_t stack[MC_EXPRESSION_STACK_SIZE];
+ size_t stack_size;
+
+ unw_cursor_t* cursor;
+ void* frame_base;
+ mc_snapshot_t snapshot;
+ mc_object_info_t object_info;
+} s_mc_expression_state_t, *mc_expression_state_t;
+
+int mc_dwarf_execute_expression(size_t n, const Dwarf_Op* ops, mc_expression_state_t state);
+
+void* mc_find_frame_base(dw_frame_t frame, mc_object_info_t object_info, unw_cursor_t* unw_cursor);