Remove the global stop_signal in favour of a per-thread

	stop_signal.

	* inferior.h (stop_signal): Delete.
	* gdbthread.h (save_infrun_state, load_infrun_state): Remove
	stop_signal argument.
	* thread.c (load_infrun_state, save_infrun_state): Remove
	stop_signal argument.  Don't reference it.

	* infcmd.c (stop_signal): Delete.
	(program_info): Adjust.
	* infrun.c (resume): Clear stop_signal.
	(proceed): Adjust.  Pass the last stop_signal to the thread we're
	resuming.
	(context_switch): Don't context-switch stop_signal.
	(handle_inferior_event, keep_going): Adjust.
	(save_inferior_status, restore_inferior_status): Adjust.

	* fbsd-nat.c: Include "gdbthread.h".
	(find_signalled_thread, find_stop_signal): New.
	(fbsd_make_corefile_notes): Use it.
	* fork-child.c (startup_inferior): Adjust.

	* linux-nat.c (get_pending_status): Adjust.
	(linux_nat_do_thread_registers): Adjust.
	(find_signalled_thread, find_stop_signal): New.
	(linux_nat_do_thread_registers): Add stop_signal parameter.
	(struct linux_nat_corefile_thread_data): Add stop_signal member.
	(linux_nat_corefile_thread_callback): Pass stop_signal.
	(linux_nat_do_registers): Delete.
	(linux_nat_make_corefile_notes): Use find_stop_signal.  Assume
	there's always a thread.

	* procfs.c (find_signalled_thread, find_stop_signal): New.
	(find_stop_signal): New.
	(procfs_do_thread_registers): Add stop_signal parameter.
	(struct procfs_corefile_thread_data): Add stop_signal member.
	(procfs_corefile_thread_callback): Pass args->stop_signal.
	(procfs_make_note_section): Find the last stop_signal.

	* solib-irix.c: Include gdbthread.h.
	(irix_solib_create_inferior_hook): Adjust.
	* solib-osf.c: Include gdbthread.h.
	(osf_solib_create_inferior_hook): Adjust.
	* solib-sunos.c: Include gdbthread.h.
	(sunos_solib_create_inferior_hook): Adjust.
	* solib-svr4.c: Include gdbthread.h.
	(svr4_solib_create_inferior_hook): Adjust.

	* win32-nat.c (do_initial_win32_stuff): Adjust.

1 files changed, 3 insertions, 4 deletions

diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index ca74976..3082abf 100644
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -149,6 +149,7 @@ struct thread_info
   int stop_step;
   int step_multi;
 
+  /* Last signal that the inferior received (why it stopped).  */
   enum target_signal stop_signal;
 
   /* Chain containing status of breakpoint(s) the thread stopped
@@ -224,8 +225,7 @@ extern void save_infrun_state (ptid_t ptid,
 			       struct continuation *continuations,
 			       struct continuation *intermediate_continuations,
 			       int stop_step,
-			       int step_multi,
-			       enum target_signal stop_signal);
+			       int step_multi);
 
 /* infrun context switch: load the debugger state previously saved
    for the given thread.  */
@@ -233,8 +233,7 @@ extern void load_infrun_state (ptid_t ptid,
 			       struct continuation **continuations,
 			       struct continuation **intermediate_continuations,
 			       int *stop_step,
-			       int *step_multi,
-			       enum target_signal *stop_signal);
+			       int *step_multi);
 
 /* Switch from one thread to another.  */
 extern void switch_to_thread (ptid_t ptid);