Add support for an embedded symbol table

1 files changed, 45 insertions, 0 deletions

diff --git a/kern/symbol.h b/kern/symbol.h
new file mode 100644
index 00000000..61fbf3f0
--- /dev/null
+++ b/kern/symbol.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2018 Agustina Arzille.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef KERN_SYMBOL_H
+#define KERN_SYMBOL_H
+
+#include <stdint.h>
+
+#include <kern/macros.h>
+
+#define __symbol_table __section(".symbol")
+
+/*
+ * Symbol structure.
+ *
+ * This structure is public.
+ */
+struct symbol {
+    uintptr_t addr;
+    uintptr_t size;
+    const char *name;
+};
+
+/*
+ * Look up a symbol from an address.
+ *
+ * NULL is returned if no symbol was found for the given address.
+ */
+const struct symbol * symbol_lookup(uintptr_t addr);
+
+#endif /* KERN_SYMBOL_H */