ddb: add support for ELF symbol tables

* ddb/db_elf.c: New file.
* ddb/db_elf.h: Likewise.
* Makefrag.am (libkernel_a_SOURCES): Add db_elf.{c,h}.
* ddb/db_sym.c (dummy_db_sym_init): New stub db_sym_init function.
(db_sym_switch): Add ELF functions.
* ddb/db_sym.h (SYMTAB_ELF): New macro.
(elf_db_sym_init): New declaration.
* i386/i386at/model_dep.c (c_boot_entry): Get ELF section header
information from the multiboot structure, and call elf_db_sym_init.

1 files changed, 13 insertions, 1 deletions

diff --git a/ddb/db_sym.c b/ddb/db_sym.c
index 7d97d15e..0179137f 100644
--- a/ddb/db_sym.c
+++ b/ddb/db_sym.c
@@ -38,6 +38,7 @@
 #include <ddb/db_sym.h>
 #include <ddb/db_task_thread.h>
 #include <ddb/db_aout.h>
+#include <ddb/db_elf.h>
 
 #include <vm/vm_map.h>	/* vm_map_t */
 
@@ -507,6 +508,10 @@ void db_free_symbol(db_sym_t s)
  */
 
 void dummy_db_free_symbol(db_sym_t symbol) { }
+boolean_t dummy_db_sym_init(char *a, char *b, char *c, char *d) {
+  return FALSE;
+}
+
 
 struct db_sym_switch x_db[] = {
 
@@ -521,7 +526,14 @@ struct db_sym_switch x_db[] = {
 	{ 0,},
 
 	/* Machdep, not inited here */
-	{ 0,}
+	{ 0,},
+
+#ifdef	DB_NO_ELF
+	{ 0,},
+#else	/* DB_NO_ELF */
+	{ dummy_db_sym_init, elf_db_lookup, elf_db_search_symbol,
+	  elf_db_line_at_pc, elf_db_symbol_values, dummy_db_free_symbol },
+#endif	/* DB_NO_ELF */
 
 };