sim: add ATTRIBUTE_PRINTF / ATTRIBUTE_NULL_PRINTF where necessary

I finally got the all-targets sim building with Clang, these are all the
instances where an ATTRIBUTE_PRINTF or ATTRIBUTE_NULL_PRINTF attribute
needed to be added to avoid errors like:

    /home/simark/src/binutils-gdb/sim/aarch64/../common/sim-profile.c:464:19: error: format string is not a string literal [-Werror,-Wformat-nonliteral]
        vfprintf (fp, fmt, ap);
                      ^~~
There are more fixes needed to get everything building, but adding these
attributes is trivial enough, so I send them all in a single patch.

Adding the format attributes introduces some format string errors when
building with GCC (because now format strings are checked), so
corresponding changes are needed to avoid breaking the build.  Other
than simple format string specified changes, there is this one:

    /home/simark/src/binutils-gdb/sim/aarch64/../common/hw-events.c: In function 'hw_event_queue_schedule':
    /home/simark/src/binutils-gdb/sim/aarch64/../common/hw-events.c:95:15: error: too many arguments for format [-Werror=format-extra-args]
       95 |         NULL, dummy);
          |               ^~~~~

We can fix it and avoid using a dummy variable by simply calling
hw_event_queue_schedule_tracef instead of
hw_event_queue_schedule_vtracef.

sim/arm/ChangeLog:

	* armdefs.h (ARMul_ConsolePrint): Use format attribute.
	* wrapper.c (op_printf): Likewise.

sim/bfin/ChangeLog:

	* interp.c (sim_open): Adjust format string specifier.

sim/common/ChangeLog:

	* hw-events.h (hw_event_queue_schedule_tracef): Use format attribute.
	(hw_event_queue_schedule_vtracef): Likewise.
	* hw-tree.h (hw_tree_vparse): Likewise.
	* sim-profile.c (profile_vprintf): Likewise.
	* sim-trace.c (dis_printf): Likewise.
	* sim-trace.h (trace_printf): Likewise.
	(trace_vprintf): Likewise.
	* sim-utils.h (sim_do_commandf): Likewise.
	* hw-events.c (hw_event_queue_schedule): Use
	hw_event_queue_schedule_tracef.

sim/rx/ChangeLog:

	* trace.c (op_printf): Likewise.

sim/v850/ChangeLog:

	* interp.c (sim_open): Adjust format string specifier.

Change-Id: I1445115ce57db15bb8e35dca93014555e7555794

8 files changed, 24 insertions, 14 deletions

diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index fd9a5dd..17b711c 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,16 @@
+2021-05-03  Simon Marchi  <simon.marchi@polymtl.ca>
+
+	* hw-events.h (hw_event_queue_schedule_tracef): Use format attribute.
+	(hw_event_queue_schedule_vtracef): Likewise.
+	* hw-tree.h (hw_tree_vparse): Likewise.
+	* sim-profile.c (profile_vprintf): Likewise.
+	* sim-trace.c (dis_printf): Likewise.
+	* sim-trace.h (trace_printf): Likewise.
+	(trace_vprintf): Likewise.
+	* sim-utils.h (sim_do_commandf): Likewise.
+	* hw-events.c (hw_event_queue_schedule): Use
+	hw_event_queue_schedule_tracef.
+
 2021-05-02  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* sim-options.c (standard_option_handler): Add default cases to
diff --git a/sim/common/hw-events.c b/sim/common/hw-events.c
index 1c749dd..81628f0 100644
--- a/sim/common/hw-events.c
+++ b/sim/common/hw-events.c
@@ -88,12 +88,7 @@ hw_event_queue_schedule (struct hw *me,
 			 hw_event_callback *callback,
 			 void *data)
 {
-  struct hw_event *event;
-  va_list dummy;
-  memset (&dummy, 0, sizeof dummy);
-  event = hw_event_queue_schedule_vtracef (me, delta_time, callback, data,
-					   NULL, dummy);
-  return event;
+  return hw_event_queue_schedule_tracef (me, delta_time, callback, data, NULL);
 }
 
 struct hw_event *
diff --git a/sim/common/hw-events.h b/sim/common/hw-events.h
index 901063b..51ca5bd 100644
--- a/sim/common/hw-events.h
+++ b/sim/common/hw-events.h
@@ -39,7 +39,7 @@ struct hw_event *hw_event_queue_schedule_tracef
  hw_event_callback *handler,
  void *data,
  const char *fmt,
- ...) ATTRIBUTE_PRINTF (5, 6);
+ ...) ATTRIBUTE_NULL_PRINTF (5, 6);
 
 struct hw_event *hw_event_queue_schedule_vtracef
 (struct hw *me,
@@ -47,7 +47,7 @@ struct hw_event *hw_event_queue_schedule_vtracef
  hw_event_callback *handler,
  void *data,
  const char *fmt,
- va_list ap);
+ va_list ap) ATTRIBUTE_NULL_PRINTF (5, 0);
 
 
 void hw_event_queue_deschedule
diff --git a/sim/common/hw-tree.h b/sim/common/hw-tree.h
index 86ebf17..85c91ad 100644
--- a/sim/common/hw-tree.h
+++ b/sim/common/hw-tree.h
@@ -39,7 +39,7 @@ struct hw *hw_tree_parse
 struct hw *hw_tree_vparse
 (struct hw *root,
  const char *fmt,
- va_list ap);
+ va_list ap) ATTRIBUTE_PRINTF (2, 0);
 
 
 void hw_tree_finish
diff --git a/sim/common/sim-profile.c b/sim/common/sim-profile.c
index 75bdc70..455e1a2 100644
--- a/sim/common/sim-profile.c
+++ b/sim/common/sim-profile.c
@@ -454,7 +454,7 @@ profile_option_handler (SIM_DESC sd,
 
 /* Profiling output hooks.  */
 
-static void
+static void ATTRIBUTE_PRINTF (3, 0)
 profile_vprintf (SIM_DESC sd, sim_cpu *cpu, const char *fmt, va_list ap)
 {
   FILE *fp = PROFILE_FILE (CPU_PROFILE_DATA (cpu));
diff --git a/sim/common/sim-trace.c b/sim/common/sim-trace.c
index 5f161da..26d9556 100644
--- a/sim/common/sim-trace.c
+++ b/sim/common/sim-trace.c
@@ -889,7 +889,7 @@ dis_read (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
   return 0;
 }
 
-static int
+static int ATTRIBUTE_PRINTF (2, 3)
 dis_printf (SIM_CPU *cpu, const char *fmt, ...)
 {
   SIM_DESC sd = CPU_STATE (cpu);
diff --git a/sim/common/sim-trace.h b/sim/common/sim-trace.h
index 7ff7b02..c89084e 100644
--- a/sim/common/sim-trace.h
+++ b/sim/common/sim-trace.h
@@ -653,9 +653,10 @@ do { \
 
 
 extern void trace_printf (SIM_DESC, sim_cpu *, const char *, ...)
-     ATTRIBUTE_PRINTF (3, 4);
+    ATTRIBUTE_PRINTF (3, 4);
 
-extern void trace_vprintf (SIM_DESC, sim_cpu *, const char *, va_list);
+extern void trace_vprintf (SIM_DESC, sim_cpu *, const char *, va_list)
+    ATTRIBUTE_PRINTF (3, 0);
 
 /* Debug support.
    This is included here because there isn't enough of it to justify
diff --git a/sim/common/sim-utils.h b/sim/common/sim-utils.h
index f089245..9cc19f5 100644
--- a/sim/common/sim-utils.h
+++ b/sim/common/sim-utils.h
@@ -68,7 +68,8 @@ struct bfd *sim_load_file (SIM_DESC sd, const char *myname,
 			   int lma_p, sim_write_fn do_load);
 
 /* Internal version of sim_do_command, include formatting */
-void sim_do_commandf (SIM_DESC sd, const char *fmt, ...);
+void sim_do_commandf (SIM_DESC sd, const char *fmt, ...)
+    ATTRIBUTE_PRINTF (2, 3);
 
 
 /* These are defined in callback.c as cover functions to the vprintf