From d6ea11561793c96cf1eb9f3f013089724c9c923d Mon Sep 17 00:00:00 2001
From: Jiong Wang <jiwang@tilera.com>
Date: Thu, 6 Dec 2012 14:15:54 +0800
Subject: [PATCH 5/5]     * tilegx-tdep.c (tilera_print_registers_info): new

        support tilegx private register info hook to show
      registers in columns.
---
 gdb/tilegx-tdep.c |   63 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/gdb/tilegx-tdep.c b/gdb/tilegx-tdep.c
index 1e967fe..bf00983 100644
--- a/gdb/tilegx-tdep.c
+++ b/gdb/tilegx-tdep.c
@@ -946,6 +946,66 @@ tilegx_cannot_reference_register (struct gdbarch *gdbarch, int regno)
     return 1;
 }
 
+
+/* Tilera private register printer.  */
+#define MAX_COLUMNS 3
+static void
+tilera_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file,
+                             struct frame_info *frame,
+                             int regnum, int print_all)
+{
+  int i;
+  int j;
+  int k;
+  gdb_byte buffer[MAX_REGISTER_SIZE];
+
+  if (regnum != -1)
+    {
+      default_print_registers_info (gdbarch, file, frame, regnum, print_all);
+      return;
+    }
+
+  for (i = 0; i < TILEGX_NUM_EASY_REGS / MAX_COLUMNS + 1; ++i)
+    {
+      for (j = i;
+           j < TILEGX_NUM_EASY_REGS + 1;
+           j += TILEGX_NUM_EASY_REGS / MAX_COLUMNS + 1)
+        {
+	  /* Some registers are never available. Skip them and print PC.  */
+	  if (j > TILEGX_LR_REGNUM)
+	    j = TILEGX_PC_REGNUM;
+
+	  if (j > i)
+	    fprintf_filtered (file, "    ");
+
+	  fputs_filtered (gdbarch_register_name (gdbarch, j), file);
+	  print_spaces_filtered (5 - strlen (gdbarch_register_name
+					     (gdbarch, j)), file);
+
+	  /* Get the data in raw format.  */
+	  if (! deprecated_frame_register_read (frame, j, buffer))
+	    {
+	      fprintf_filtered (file, " *** no value *** ");
+	    }
+	  else
+	    {
+	      fprintf_filtered (file, "0x");
+	      for (k = 0; k < tilegx_reg_size; k++)
+		{
+		  int idx;
+		  if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+		    idx = k;
+		  else
+		    idx = tilegx_reg_size - 1 - k;
+		  fprintf_filtered (file, "%02x", (unsigned char) buffer[idx]);
+		}
+	    }
+        }
+
+      fprintf_filtered (file, "\n");
+    }
+}
+
 static struct gdbarch *
 tilegx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 {
@@ -1006,6 +1066,9 @@ tilegx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   /* Stack grows down.  */
   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
 
+  /* Tilera private register printer */
+  set_gdbarch_print_registers_info (gdbarch, tilera_print_registers_info);
+
   /* Frame Info.  */
   set_gdbarch_unwind_sp (gdbarch, tilegx_unwind_sp);
   set_gdbarch_unwind_pc (gdbarch, tilegx_unwind_pc);
-- 
1.7.10.4