die_find_child(sc_die, __die_collect_vars_cb, (void *)var_types, &die_mem);
}
+
+static int __die_collect_global_vars_cb(Dwarf_Die *die_mem, void *arg)
+{
+ struct die_var_type **var_types = arg;
+ Dwarf_Die type_die;
+ int tag = dwarf_tag(die_mem);
+ Dwarf_Attribute attr;
+ Dwarf_Addr base, start, end;
+ Dwarf_Op *ops;
+ size_t nops;
+ struct die_var_type *vt;
+
+ if (tag != DW_TAG_variable)
+ return DIE_FIND_CB_SIBLING;
+
+ if (dwarf_attr(die_mem, DW_AT_location, &attr) == NULL)
+ return DIE_FIND_CB_SIBLING;
+
+ /* Only collect the location with an absolute address. */
+ if (dwarf_getlocations(&attr, 0, &base, &start, &end, &ops, &nops) <= 0)
+ return DIE_FIND_CB_SIBLING;
+
+ if (ops->atom != DW_OP_addr)
+ return DIE_FIND_CB_SIBLING;
+
+ if (!check_allowed_ops(ops, nops))
+ return DIE_FIND_CB_SIBLING;
+
+ if (die_get_real_type(die_mem, &type_die) == NULL)
+ return DIE_FIND_CB_SIBLING;
+
+ vt = malloc(sizeof(*vt));
+ if (vt == NULL)
+ return DIE_FIND_CB_END;
+
+ vt->die_off = dwarf_dieoffset(&type_die);
+ vt->addr = ops->number;
+ vt->reg = -1;
+ vt->offset = 0;
+ vt->next = *var_types;
+ *var_types = vt;
+
+ return DIE_FIND_CB_SIBLING;
+}
+
+/**
+ * die_collect_global_vars - Save all global variables
+ * @cu_die: a CU DIE
+ * @var_types: a pointer to save the resulting list
+ *
+ * Save all global variables in the @cu_die and save them to @var_types.
+ * The @var_types is a singly-linked list containing type and location info.
+ * Actual type can be retrieved using dwarf_offdie() with 'die_off' later.
+ *
+ * Callers should free @var_types.
+ */
+void die_collect_global_vars(Dwarf_Die *cu_die, struct die_var_type **var_types)
+{
+ Dwarf_Die die_mem;
+
+ die_find_child(cu_die, __die_collect_global_vars_cb, (void *)var_types, &die_mem);
+}
#endif /* HAVE_DWARF_GETLOCATIONS_SUPPORT */
#ifdef HAVE_DWARF_CFI_SUPPORT
/* Save all variables and parameters in this scope */
void die_collect_vars(Dwarf_Die *sc_die, struct die_var_type **var_types);
+/* Save all global variables in this CU */
+void die_collect_global_vars(Dwarf_Die *cu_die, struct die_var_type **var_types);
+
#else /* HAVE_DWARF_GETLOCATIONS_SUPPORT */
static inline int die_get_var_range(Dwarf_Die *sp_die __maybe_unused,
{
}
+static inline void die_collect_global_vars(Dwarf_Die *cu_die __maybe_unused,
+ struct die_var_type **var_types __maybe_unused)
+{
+}
+
#endif /* HAVE_DWARF_GETLOCATIONS_SUPPORT */
#ifdef HAVE_DWARF_CFI_SUPPORT