2003-12-02 Roland McGrath <roland@redhat.com>

* thread_dbP.h (DB_FUNCTION): New macro.
	* structs.def: Use it for __nptl_create_event and __nptl_death_event.
	* db_info.c (DB_FUNCTION): New macro.
	* td_symbol_list.c (DB_FUNCTION): New macro, prepend "." to symbol
	name under [HAVE_ASM_GLOBAL_DOT_NAME].
	(td_lookup) [HAVE_ASM_GLOBAL_DOT_NAME]: If lookup fails with PS_NOSYM
	and name starts with a dot, try it without the dot.

nptl_db/db_info.c

@@ -71,10 +71,12 @@ DESC (_thread_db_pthread_dtvp,
 #define DB_VARIABLE(name) DESC (_thread_db_##name, 0, name)
 #define DB_ARRAY_VARIABLE(name) ARRAY_DESC (_thread_db_##name, 0, name)
 #define DB_SYMBOL(name)	/* Nothing.  */
+#define DB_FUNCTION(name) /* Nothing.  */
 #include "structs.def"
 #undef DB_STRUCT
 #undef DB_STRUCT_FIELD
 #undef DB_SYMBOL
+#undef DB_FUNCTION
 #undef DB_VARIABLE
 #undef DESC
 

nptl_db/structs.def

@@ -51,8 +51,8 @@ DB_STRUCT_FIELD (td_eventbuf_t, eventdata)
 DB_SYMBOL (stack_used)
 DB_SYMBOL (__stack_user)
 DB_SYMBOL (nptl_version)
-DB_SYMBOL (__nptl_create_event)
+DB_FUNCTION (__nptl_create_event)
-DB_SYMBOL (__nptl_death_event)
+DB_FUNCTION (__nptl_death_event)
 DB_SYMBOL (__nptl_threads_events)
 DB_VARIABLE (__nptl_nthreads)
 DB_VARIABLE (__nptl_last_event)

nptl_db/td_symbol_list.c

@@ -23,6 +23,12 @@
 #include "thread_dbP.h"
 
 
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+# define DOT "."		/* PPC64 requires . prefix on code symbols.  */
+#else
+# define DOT			/* No prefix.  */
+#endif
+
 static const char *symbol_list_arr[] =
 {
 # define DB_STRUCT(type) \
@@ -31,11 +37,14 @@ static const char *symbol_list_arr[] =
   [SYM_##type##_FIELD_##field] = "_thread_db_" #type "_" #field,
 # define DB_SYMBOL(name) \
   [SYM_##name] = #name,
+# define DB_FUNCTION(name) \
+  [SYM_##name] = DOT #name,
 # define DB_VARIABLE(name) \
   [SYM_##name] = #name, \
   [SYM_DESC_##name] = "_thread_db_" #name,
 # include "structs.def"
 # undef DB_STRUCT
+# undef DB_FUNCTION
 # undef DB_SYMBOL
 # undef DB_VARIABLE
 
@@ -59,6 +68,18 @@ td_symbol_list (void)
 ps_err_e
 td_lookup (struct ps_prochandle *ps, int idx, psaddr_t *sym_addr)
 {
+  ps_err_e result;
   assert (idx >= 0 && idx < SYM_NUM_MESSAGES);
-  return ps_pglobal_lookup (ps, LIBPTHREAD_SO, symbol_list_arr[idx], sym_addr);
+  result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, symbol_list_arr[idx],
+			      sym_addr);
+
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+  /* For PowerPC, 64-bit uses dot symbols but 32-bit does not.
+     We could be a 64-bit libthread_db debugging a 32-bit libpthread.  */
+  if (result == PS_NOSYM && symbol_list_arr[idx][0] == '.')
+    result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, &symbol_list_arr[idx][1],
+				sym_addr);
+#endif
+
+  return result;
 }

nptl_db/thread_dbP.h

@@ -36,11 +36,13 @@ enum
 # define DB_STRUCT(type)		SYM_SIZEOF_##type,
 # define DB_STRUCT_FIELD(type, field)	SYM_##type##_FIELD_##field,
 # define DB_SYMBOL(name)		SYM_##name,
+# define DB_FUNCTION(name)		SYM_##name,
 # define DB_VARIABLE(name)		SYM_##name, SYM_DESC_##name,
 # include "structs.def"
 # undef DB_STRUCT
 # undef DB_STRUCT_FIELD
 # undef DB_SYMBOL
+# undef DB_FUNCTION
 # undef DB_VARIABLE
 
     SYM_TH_UNIQUE_CONST_THREAD_AREA,
@@ -88,12 +90,15 @@ struct td_thragent
   db_desc_t ta_field_##type##_##field;
 # define DB_SYMBOL(name) \
   psaddr_t ta_addr_##name;
+# define DB_FUNCTION(name) \
+  psaddr_t ta_addr_##name;
 # define DB_VARIABLE(name) \
   psaddr_t ta_addr_##name; \
   db_desc_t ta_var_##name;
 # include "structs.def"
 # undef DB_STRUCT
 # undef DB_STRUCT_FIELD
+# undef DB_FUNCTION
 # undef DB_SYMBOL
 # undef DB_VARIABLE