(xframe): Print frame name.

(xlist): New command to print a list (max 10 elements).
(xpr): Print lisp object of any type.
(pitx): Print it->pixel_width.

src/.gdbinit

@@ -211,6 +211,7 @@ define pitx
   printf "vpos=%d hpos=%d", $it->vpos, $it->hpos,
   printf " y=%d lvy=%d", $it->current_y, $it->last_visible_y
   printf " x=%d vx=%d-%d", $it->current_x, $it->first_visible_x, $it->last_visible_x
+  printf " w=%d", $it->pixel_width
   printf " a+d=%d+%d=%d", $it->ascent, $it->descent, $it->ascent+$it->descent
   printf " max=%d+%d=%d", $it->max_ascent, $it->max_descent, $it->max_ascent+$it->max_descent
   printf "\n"
@@ -544,6 +545,10 @@ end
 define xframe
   xgetptr $
   print (struct frame *) $ptr
+  xgetptr $->name
+  set $ptr = (struct Lisp_String *) $ptr
+  xprintstr $ptr
+  echo \n
 end
 document xframe
 Print $ as a frame pointer, assuming it is an Emacs Lisp frame value.
@@ -676,6 +681,31 @@ document xcdr
 Print the cdr of $, assuming it is an Emacs Lisp pair.
 end
 
+define xlist
+  xgetptr $
+  set $cons = (struct Lisp_Cons *) $ptr
+  xgetptr Qnil
+  set $nil = $ptr
+  set $i = 0
+  while $cons != $nil && $i < 10
+    p/x $cons->car
+    xpr
+    xgetptr $cons->u.cdr
+    set $cons = (struct Lisp_Cons *) $ptr
+    set $i = $i + 1
+    printf "---\n"
+  end
+  if $cons == $nil
+    printf "nil\n"
+  else
+    printf "...\n"
+    p $ptr
+  end
+end
+document xlist
+Print $ assuming it is a list.
+end
+
 define xfloat
   xgetptr $
   print ((struct Lisp_Float *) $ptr)->u.data
@@ -694,6 +724,108 @@ document xscrollbar
 Print $ as a scrollbar pointer.
 end
 
+define xpr
+  xtype
+  if $type == Lisp_Int
+    xint
+  end
+  if $type == Lisp_Symbol
+    xsymbol
+  end
+  if $type == Lisp_String
+    xstring
+  end
+  if $type == Lisp_Cons
+    xcons
+  end
+  if $type == Lisp_Float
+    xfloat
+  end
+  if $type == Lisp_Misc
+    set $misc = (enum Lisp_Misc_Type) (((struct Lisp_Free *) $ptr)->type)
+    if $misc == Lisp_Misc_Free
+      xmiscfree
+    end
+    if $misc == Lisp_Misc_Boolfwd
+      xboolfwd
+    end
+    if $misc == Lisp_Misc_Marker
+      xmarker
+    end
+    if $misc == Lisp_Misc_Intfwd
+      xintfwd
+    end
+    if $misc == Lisp_Misc_Boolfwd
+      xboolfwd
+    end
+    if $misc == Lisp_Misc_Objfwd
+      xobjfwd
+    end
+    if $misc == Lisp_Misc_Buffer_Objfwd
+      xbufobjfwd
+    end
+    if $misc == Lisp_Misc_Buffer_Local_Value
+      xbuflocal
+    end
+#    if $misc == Lisp_Misc_Some_Buffer_Local_Value
+#      xvalue
+#    end
+    if $misc == Lisp_Misc_Overlay
+      xoverlay
+    end
+    if $misc == Lisp_Misc_Kboard_Objfwd
+      xkbobjfwd
+    end
+#    if $misc == Lisp_Misc_Save_Value
+#      xsavevalue
+#    end
+  end
+  if $type == Lisp_Vectorlike
+    set $size = ((struct Lisp_Vector *) $ptr)->size
+    if ($size & PVEC_FLAG)
+      set $vec = (enum pvec_type) ($size & PVEC_TYPE_MASK)
+      if $vec == PVEC_NORMAL_VECTOR
+	xvector
+      end
+      if $vec == PVEC_PROCESS
+	xprocess
+      end
+      if $vec == PVEC_FRAME
+	xframe
+      end
+      if $vec == PVEC_COMPILED
+	xcompiled
+      end
+      if $vec == PVEC_WINDOW
+	xwindow
+      end
+      if $vec == PVEC_WINDOW_CONFIGURATION
+	xwinconfig
+      end
+      if $vec == PVEC_SUBR
+	xsubr
+      end
+      if $vec == PVEC_CHAR_TABLE
+	xchartable
+      end
+      if $vec == PVEC_BOOL_VECTOR
+	xboolvector
+      end
+      if $vec == PVEC_BUFFER
+	xbuffer
+      end
+      if $vec == PVEC_HASH_TABLE
+	xhashtable
+      end
+    else
+      xvector
+    end
+  end
+end
+document xpr
+Print $ as a lisp object of any type.
+end
+
 define xprintstr
   set $data = $arg0->data
   output ($arg0->size > 1000) ? 0 : ($data[0])@($arg0->size_byte < 0 ? $arg0->size & ~gdb_array_mark_flag : $arg0->size_byte)
@@ -716,7 +848,7 @@ define xbacktrace
     xgettype (*$bt->function)
     if $type == Lisp_Symbol
       xprintsym (*$bt->function)
-      echo \n
+      printf " (0x%x)\n", *$bt->args
     else
       printf "0x%x ", *$bt->function
       if $type == Lisp_Vectorlike
@@ -737,6 +869,27 @@ document xbacktrace
   an error was signaled.
 end
 
+define which
+  set debug_print (which_symbols ($arg0))
+end
+document which
+  Print symbols which references a given lisp object,
+  either as its symbol value or symbol function.
+end
+
+define xbytecode
+  set $bt = byte_stack_list
+  while $bt
+    xgettype ($bt->byte_string)
+    printf "0x%x => ", $bt->byte_string
+    which $bt->byte_string
+    set $bt = $bt->next
+  end
+end
+document xbytecode
+  Print a backtrace of the byte code stack.
+end
+
 # Show Lisp backtrace after normal backtrace.
 define hookpost-backtrace
   set $bt = backtrace_list