[PATCH 2/3] Refactor gdbarch method print_float_info

[Yao Qi <yao at codesourcery dot com>]

This patch is to change print_float_info gdbarch method for the
following two reasons,

 1. we want to add a default implementation of print_float_info to
    dump the float pointer registers.  It can be reused by backend to
    print something more than float point registers.
 2. we want to simply the caller of print_float_info,
    infcmd.c:print_float_info.

gdb:

2014-12-17  Yao Qi  <yao@codesourcery.com>

 	* gdbarch.sh (print_float_info): Change its type from 'M' to 'm'.
	* gdbarch.c: Re-generated.
	* gdbarch.h: Likewise.
	* infcmd.c (default_print_float_info): New function.
	(print_float_info): Move code to default_print_float_info and
	call it.
	* inferior.h (default_print_float_info): Declare it.
---
 gdb/gdbarch.c  | 13 ++-----------
 gdb/gdbarch.h  |  2 --
 gdb/gdbarch.sh |  2 +-
 gdb/infcmd.c   | 45 ++++++++++++++++++++++++---------------------
 gdb/inferior.h |  5 +++++
 5 files changed, 32 insertions(+), 35 deletions(-)

diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 657708e..93110af 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -379,6 +379,7 @@ gdbarch_alloc (const struct gdbarch_info *info,
   gdbarch->deprecated_fp_regnum = -1;
   gdbarch->call_dummy_location = AT_ENTRY_POINT;
   gdbarch->print_registers_info = default_print_registers_info;
+  gdbarch->print_float_info = default_print_float_info;
   gdbarch->register_sim_regno = legacy_register_sim_regno;
   gdbarch->cannot_fetch_register = cannot_register_not;
   gdbarch->cannot_store_register = cannot_register_not;
@@ -531,7 +532,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
   /* Skip verify of call_dummy_location, invalid_p == 0 */
   /* Skip verify of push_dummy_code, has predicate.  */
   /* Skip verify of print_registers_info, invalid_p == 0 */
-  /* Skip verify of print_float_info, has predicate.  */
+  /* Skip verify of print_float_info, invalid_p == 0 */
   /* Skip verify of print_vector_info, has predicate.  */
   /* Skip verify of register_sim_regno, invalid_p == 0 */
   /* Skip verify of cannot_fetch_register, invalid_p == 0 */
@@ -1089,9 +1090,6 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
                       "gdbarch_dump: pointer_to_address = <%s>\n",
                       host_address_to_string (gdbarch->pointer_to_address));
   fprintf_unfiltered (file,
-                      "gdbarch_dump: gdbarch_print_float_info_p() = %d\n",
-                      gdbarch_print_float_info_p (gdbarch));
-  fprintf_unfiltered (file,
                       "gdbarch_dump: print_float_info = <%s>\n",
                       host_address_to_string (gdbarch->print_float_info));
   fprintf_unfiltered (file,
@@ -2235,13 +2233,6 @@ set_gdbarch_print_registers_info (struct gdbarch *gdbarch,
   gdbarch->print_registers_info = print_registers_info;
 }
 
-int
-gdbarch_print_float_info_p (struct gdbarch *gdbarch)
-{
-  gdb_assert (gdbarch != NULL);
-  return gdbarch->print_float_info != NULL;
-}
-
 void
 gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args)
 {
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index a40863d..c22fc7d 100644
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -377,8 +377,6 @@ typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, stru
 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
 
-extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch);
-
 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh
index a643d00..685f08f 100755
--- a/gdb/gdbarch.sh
+++ b/gdb/gdbarch.sh
@@ -479,7 +479,7 @@ v:int:call_dummy_location::::AT_ENTRY_POINT::0
 M:CORE_ADDR:push_dummy_code:CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache:sp, funaddr, args, nargs, value_type, real_pc, bp_addr, regcache
 
 m:void:print_registers_info:struct ui_file *file, struct frame_info *frame, int regnum, int all:file, frame, regnum, all::default_print_registers_info::0
-M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
+m:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args::default_print_float_info::0
 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 # MAP a GDB RAW register number onto a simulator register number.  See
 # also include/...-sim.h.
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index de0d24d..e51cb7b 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -2864,34 +2864,37 @@ interrupt_command (char *args, int from_tty)
     }
 }
 
+void
+default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file,
+			  struct frame_info *frame, const char *args)
+{
+  int regnum;
+  int printed_something = 0;
+
+  for (regnum = 0;
+       regnum < gdbarch_num_regs (gdbarch)
+	 + gdbarch_num_pseudo_regs (gdbarch);
+       regnum++)
+    {
+      if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
+	{
+	  printed_something = 1;
+	  gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
+	}
+    }
+  if (!printed_something)
+    fprintf_filtered (file, "No floating-point info "
+		      "available for this processor.\n");
+}
+
 static void
 print_float_info (struct ui_file *file,
 		  struct frame_info *frame, const char *args)
 {
   struct gdbarch *gdbarch = get_frame_arch (frame);
 
-  if (gdbarch_print_float_info_p (gdbarch))
-    gdbarch_print_float_info (gdbarch, file, frame, args);
-  else
-    {
-      int regnum;
-      int printed_something = 0;
+  gdbarch_print_float_info (gdbarch, file, frame, args);
 
-      for (regnum = 0;
-	   regnum < gdbarch_num_regs (gdbarch)
-		    + gdbarch_num_pseudo_regs (gdbarch);
-	   regnum++)
-	{
-	  if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
-	    {
-	      printed_something = 1;
-	      gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
-	    }
-	}
-      if (!printed_something)
-	fprintf_filtered (file, "No floating-point info "
-			  "available for this processor.\n");
-    }
 }
 
 static void
diff --git a/gdb/inferior.h b/gdb/inferior.h
index eebc034..e10197a 100644
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -106,6 +106,11 @@ extern void default_print_registers_info (struct gdbarch *gdbarch,
 					  struct frame_info *frame,
 					  int regnum, int all);
 
+extern void default_print_float_info (struct gdbarch *gdbarch,
+				      struct ui_file *file,
+				      struct frame_info *frame,
+				      const char *args);
+
 extern void child_terminal_info (struct target_ops *self, const char *, int);
 
 extern void term_info (char *, int);
-- 
1.9.3