* remote.c (remote_get_threadinfo) : Support for remote

        multithread debugging.
        (remote_get_threadlist) : get a partial list of threads
        (remote_threadlist_iterator) : Step through all the threads
        (init_remote_threadtests) : Optional builtin unit test commands.

        * thread.c (bind_target_thread_vector) : Implementa a more dynamic
        way of accessing target specific thread info functions than
        FIND_NEW_THREADS.
        (target_thread_info) : Function to get extended thread information.

        * gdbthread.h : Export internal data structures corresponding to
        external detailed thread info response. This is more like a 'ps'
        command than what might be expected of host based threads. This
        is for embedded systems.

1 files changed, 63 insertions, 0 deletions

diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index 1e33513..5978750 100644
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -50,4 +50,67 @@ extern void save_infrun_state PARAMS ((int, CORE_ADDR, CORE_ADDR, char *,
 /* Commands with a prefix of `thread'.  */
 extern struct cmd_list_element *thread_cmd_list;
 
+/* Support for external (remote) systems with threads (processes) */
+/* For example real time operating systems */
+ 
+#define OPAQUETHREADBYTES 8
+/* a 64 bit opaque identifier */
+typedef unsigned char threadref[OPAQUETHREADBYTES] ;
+/* WARNING: This threadref data structure comes from the remote O.S., libstub
+   protocol encoding, and remote.c. it is not particularly changable */
+
+/* Right now, the internal structure is int. We want it to be bigger.
+   Plan to fix this.
+   */
+typedef int gdb_threadref ; /* internal GDB thread reference */
+
+/*  gdb_ext_thread_info is an internal GDB data structure which is
+   equivalint to the reply of the remote threadinfo packet */
+
+struct gdb_ext_thread_info
+{
+  threadref threadid ; /* External form of thread reference */
+  int active ;         /* Has state interesting to GDB? , regs, stack */
+  char display[256] ;  /* Brief state display, name, blocked/syspended */
+  char shortname[32] ; /* To be used to name threads */
+  char more_display[256] ; /* Long info, statistics, queue depth, whatever */
+} ;
+
+/* The volume of remote transfers can be limited by submitting
+   a mask containing bits specifying the desired information.
+   Use a union of these values as the 'selection' parameter to
+   get_thread_info. FIXME: Make these TAG names more thread specific.
+   */
+#define TAG_THREADID 1
+#define TAG_EXISTS 2
+#define TAG_DISPLAY 4
+#define TAG_THREADNAME 8
+#define TAG_MOREDISPLAY 16 
+
+/* Always initialize an instance of this structure using run time assignments */
+/* Because we are likely to add entrtries to it. */
+/* Alternatly, WE COULD ADD THESE TO THE TARGET VECTOR */
+  
+struct target_thread_vector
+{
+  int (*find_new_threads)PARAMS((void)) ;
+  int (*get_thread_info) PARAMS((
+			 gdb_threadref * ref,
+			 int selection,
+			 struct gdb_ext_thread_info * info
+			 )) ;
+  /* to_thread_alive - Already in the target vector */
+  /* to_switch_thread - Done via select frame */
+} ;
+
+extern void bind_target_thread_vector PARAMS((struct target_thread_vector * vec)) ;
+
+extern struct target_thread_vector * unbind_target_thread_vector(void) ;
+
+extern int target_get_thread_info PARAMS((
+				  gdb_threadref * ref,
+				  int selection,
+				  struct gdb_ext_thread_info * info)) ;
+
+
 #endif	/* GDBTHREAD_H */