2001-06-13 Michael Snyder <msnyder@redhat.com>

        * gdbthread.h (struct thread_info): Add new fields:
        current_line, current_symtab, step_sp, for saved infrun state.
        * thread.c (save_infrun_state, load_infrun_state): Save and
        restore current_line, current_symtab, and step_sp.
        (add_thread): Rather than adding assignments to initialize
	the new fields, just use memset (tp, 0, sizeof (*tp).
	This way future new fields will not be overlooked.
        * infrun.c (handle_inferior_event): Save and restore save_sp,
        current_line, and current_symtab when switching threads.

1 files changed, 42 insertions, 33 deletions

diff --git a/gdb/thread.c b/gdb/thread.c
index 7a942769134..210b9461bfc 100644
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -124,26 +124,11 @@ add_thread (ptid_t ptid)
 {
   struct thread_info *tp;
 
-  tp = (struct thread_info *) xmalloc (sizeof (struct thread_info));
-
+  tp = (struct thread_info *) xmalloc (sizeof (*tp));
+  memset (tp, 0, sizeof (*tp));
   tp->ptid = ptid;
   tp->num = ++highest_thread_num;
-  tp->prev_pc = 0;
-  tp->prev_func_start = 0;
-  tp->prev_func_name = NULL;
-  tp->step_range_start = 0;
-  tp->step_range_end = 0;
-  tp->step_frame_address = 0;
-  tp->step_resume_breakpoint = 0;
-  tp->through_sigtramp_breakpoint = 0;
-  tp->handling_longjmp = 0;
-  tp->trap_expected = 0;
-  tp->another_trap = 0;
-  tp->stepping_through_solib_after_catch = 0;
-  tp->stepping_through_solib_catchpoints = NULL;
-  tp->stepping_through_sigtramp = 0;
   tp->next = thread_list;
-  tp->private = NULL;
   thread_list = tp;
   return tp;
 }
@@ -302,15 +287,24 @@ gdb_list_thread_ids (/* output object */)
 /* Load infrun state for the thread PID.  */
 
 void
-load_infrun_state (ptid_t ptid, CORE_ADDR *prev_pc, CORE_ADDR *prev_func_start,
-		   char **prev_func_name, int *trap_expected,
+load_infrun_state (ptid_t ptid, 
+		   CORE_ADDR *prev_pc, 
+		   CORE_ADDR *prev_func_start,
+		   char **prev_func_name, 
+		   int *trap_expected,
 		   struct breakpoint **step_resume_breakpoint,
 		   struct breakpoint **through_sigtramp_breakpoint,
-		   CORE_ADDR *step_range_start, CORE_ADDR *step_range_end,
-		   CORE_ADDR *step_frame_address, int *handling_longjmp,
-		   int *another_trap, int *stepping_through_solib_after_catch,
+		   CORE_ADDR *step_range_start, 
+		   CORE_ADDR *step_range_end,
+		   CORE_ADDR *step_frame_address, 
+		   int *handling_longjmp,
+		   int *another_trap, 
+		   int *stepping_through_solib_after_catch,
 		   bpstat *stepping_through_solib_catchpoints,
-		   int *stepping_through_sigtramp)
+		   int *stepping_through_sigtramp,
+		   int *current_line, 
+		   struct symtab **current_symtab, 
+		   CORE_ADDR *step_sp)
 {
   struct thread_info *tp;
 
@@ -323,31 +317,43 @@ load_infrun_state (ptid_t ptid, CORE_ADDR *prev_pc, CORE_ADDR *prev_func_start,
   *prev_pc = tp->prev_pc;
   *prev_func_start = tp->prev_func_start;
   *prev_func_name = tp->prev_func_name;
+  *trap_expected = tp->trap_expected;
   *step_resume_breakpoint = tp->step_resume_breakpoint;
+  *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint;
   *step_range_start = tp->step_range_start;
   *step_range_end = tp->step_range_end;
   *step_frame_address = tp->step_frame_address;
-  *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint;
   *handling_longjmp = tp->handling_longjmp;
-  *trap_expected = tp->trap_expected;
   *another_trap = tp->another_trap;
   *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch;
   *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints;
   *stepping_through_sigtramp = tp->stepping_through_sigtramp;
+  *current_line = tp->current_line;
+  *current_symtab = tp->current_symtab;
+  *step_sp = tp->step_sp;
 }
 
 /* Save infrun state for the thread PID.  */
 
 void
-save_infrun_state (ptid_t ptid, CORE_ADDR prev_pc, CORE_ADDR prev_func_start,
-		   char *prev_func_name, int trap_expected,
+save_infrun_state (ptid_t ptid, 
+		   CORE_ADDR prev_pc, 
+		   CORE_ADDR prev_func_start,
+		   char *prev_func_name, 
+		   int trap_expected,
 		   struct breakpoint *step_resume_breakpoint,
 		   struct breakpoint *through_sigtramp_breakpoint,
-		   CORE_ADDR step_range_start, CORE_ADDR step_range_end,
-		   CORE_ADDR step_frame_address, int handling_longjmp,
-		   int another_trap, int stepping_through_solib_after_catch,
+		   CORE_ADDR step_range_start, 
+		   CORE_ADDR step_range_end,
+		   CORE_ADDR step_frame_address, 
+		   int handling_longjmp,
+		   int another_trap, 
+		   int stepping_through_solib_after_catch,
 		   bpstat stepping_through_solib_catchpoints,
-		   int stepping_through_sigtramp)
+		   int stepping_through_sigtramp, 
+		   int current_line,
+		   struct symtab *current_symtab,
+		   CORE_ADDR step_sp)
 {
   struct thread_info *tp;
 
@@ -360,17 +366,20 @@ save_infrun_state (ptid_t ptid, CORE_ADDR prev_pc, CORE_ADDR prev_func_start,
   tp->prev_pc = prev_pc;
   tp->prev_func_start = prev_func_start;
   tp->prev_func_name = prev_func_name;
+  tp->trap_expected = trap_expected;
   tp->step_resume_breakpoint = step_resume_breakpoint;
+  tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint;
   tp->step_range_start = step_range_start;
   tp->step_range_end = step_range_end;
   tp->step_frame_address = step_frame_address;
-  tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint;
   tp->handling_longjmp = handling_longjmp;
-  tp->trap_expected = trap_expected;
   tp->another_trap = another_trap;
   tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch;
   tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints;
   tp->stepping_through_sigtramp = stepping_through_sigtramp;
+  tp->current_line = current_line;
+  tp->current_symtab = current_symtab;
+  tp->step_sp = step_sp;
 }
 
 /* Return true if TP is an active thread. */