2011-09-02 Pedro Alves <pedro@codesourcery.com>
[deliverable/binutils-gdb.git] / gdb / jv-valprint.c
index 165f14e0d77edee110d53c6957447d27e145deb4..f49b17202372cf2435aae594702f89fff2da7f9c 100644 (file)
@@ -1,7 +1,7 @@
 /* Support for printing Java values for GDB, the GNU debugger.
 
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
-   2008, 2009, 2010 Free Software Foundation, Inc.
+   2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -53,7 +53,7 @@ java_value_print (struct value *val, struct ui_file *stream,
     {
       CORE_ADDR obj_addr;
 
-      /* Get the run-time type, and cast the object into that */
+      /* Get the run-time type, and cast the object into that */
 
       obj_addr = unpack_pointer (type, value_contents (val));
 
@@ -89,9 +89,9 @@ java_value_print (struct value *val, struct ui_file *stream,
       if (el_type == NULL)
        {
          CORE_ADDR element;
-         CORE_ADDR next_element = -1; /* dummy initial value */
+         CORE_ADDR next_element = -1; /* Dummy initial value.  */
 
-         /* Skip object header and length. */
+         /* Skip object header and length.  */
          address += get_java_object_header_size (gdbarch) + 4;
 
          while (i < length && things_printed < options->print_max)
@@ -177,9 +177,13 @@ java_value_print (struct value *val, struct ui_file *stream,
              for (reps = 1; i + reps < length; reps++)
                {
                  set_value_lazy (next_v, 1);
-                 set_value_offset (next_v, value_offset (next_v) + TYPE_LENGTH (el_type));
-                 if (memcmp (value_contents (v), value_contents (next_v),
-                             TYPE_LENGTH (el_type)) != 0)
+                 set_value_offset (next_v, value_offset (next_v)
+                                   + TYPE_LENGTH (el_type));
+                 value_fetch_lazy (next_v);
+                 if (!(value_available_contents_eq
+                       (v, value_embedded_offset (v),
+                        next_v, value_embedded_offset (next_v),
+                        TYPE_LENGTH (el_type))))
                    break;
                }
 
@@ -205,7 +209,7 @@ java_value_print (struct value *val, struct ui_file *stream,
       return 0;
     }
 
-  /* If it's type String, print it */
+  /* If it's type String, print it */
 
   if (TYPE_CODE (type) == TYPE_CODE_PTR
       && TYPE_TARGET_TYPE (type)
@@ -225,7 +229,7 @@ java_value_print (struct value *val, struct ui_file *stream,
       unsigned long count;
       struct value *mark;
 
-      mark = value_mark ();    /* Remember start of new values */
+      mark = value_mark ();    /* Remember start of new values */
 
       data_val = value_struct_elt (&val, NULL, "data", NULL, NULL);
       data = value_as_address (data_val);
@@ -236,10 +240,11 @@ java_value_print (struct value *val, struct ui_file *stream,
       count_val = value_struct_elt (&val, NULL, "count", NULL, NULL);
       count = value_as_address (count_val);
 
-      value_free_to_mark (mark);       /* Release unnecessary values */
+      value_free_to_mark (mark);       /* Release unnecessary values */
 
       char_type = builtin_java_type (gdbarch)->builtin_char;
-      val_print_string (char_type, data + boffset, count, stream, options);
+      val_print_string (char_type, NULL, data + boffset, count, stream,
+                       options);
 
       return 0;
     }
@@ -257,8 +262,10 @@ java_value_print (struct value *val, struct ui_file *stream,
 
 static void
 java_print_value_fields (struct type *type, const gdb_byte *valaddr,
+                        int offset,
                         CORE_ADDR address, struct ui_file *stream,
                         int recurse,
+                        const struct value *val,
                         const struct value_print_options *options)
 {
   int i, len, n_baseclasses;
@@ -301,11 +308,11 @@ java_print_value_fields (struct type *type, const gdb_byte *valaddr,
 
          base_valaddr = valaddr;
 
-         java_print_value_fields (baseclass, base_valaddr, address + boffset,
-                                  stream, recurse + 1, options);
+         java_print_value_fields (baseclass, base_valaddr,
+                                  offset + boffset, address,
+                                  stream, recurse + 1, val, options);
          fputs_filtered (", ", stream);
        }
-
     }
 
   if (!len && n_baseclasses == 1)
@@ -392,12 +399,24 @@ java_print_value_fields (struct type *type, const gdb_byte *valaddr,
                {
                  fputs_filtered ("<optimized out or zero length>", stream);
                }
+             else if (value_bits_synthetic_pointer (val,
+                                                    TYPE_FIELD_BITPOS (type,
+                                                                       i),
+                                                    TYPE_FIELD_BITSIZE (type,
+                                                                        i)))
+               {
+                 fputs_filtered (_("<synthetic pointer>"), stream);
+               }
+             else if (!value_bits_valid (val, TYPE_FIELD_BITPOS (type, i),
+                                         TYPE_FIELD_BITSIZE (type, i)))
+               {
+                 val_print_optimized_out (stream);
+               }
              else
                {
                  struct value_print_options opts;
 
-                 v = value_from_longest (TYPE_FIELD_TYPE (type, i),
-                                  unpack_field_as_long (type, valaddr, i));
+                 v = value_field_bitfield (type, i, valaddr, offset, val);
 
                  opts = *options;
                  opts.deref_ref = 0;
@@ -416,7 +435,7 @@ java_print_value_fields (struct type *type, const gdb_byte *valaddr,
                  struct value *v = value_static_field (type, i);
 
                  if (v == NULL)
-                   fputs_filtered ("<optimized out>", stream);
+                   val_print_optimized_out (stream);
                  else
                    {
                      struct value_print_options opts;
@@ -438,9 +457,9 @@ java_print_value_fields (struct type *type, const gdb_byte *valaddr,
 
                  opts.deref_ref = 0;
                  val_print (TYPE_FIELD_TYPE (type, i),
-                            valaddr + TYPE_FIELD_BITPOS (type, i) / 8, 0,
-                            address + TYPE_FIELD_BITPOS (type, i) / 8,
-                            stream, recurse + 1, &opts,
+                            valaddr,
+                            offset + TYPE_FIELD_BITPOS (type, i) / 8,
+                            address, stream, recurse + 1, val, &opts,
                             current_language);
                }
            }
@@ -456,21 +475,19 @@ java_print_value_fields (struct type *type, const gdb_byte *valaddr,
   fprintf_filtered (stream, "}");
 }
 
-/* Print data of type TYPE located at VALADDR (within GDB), which came from
-   the inferior at address ADDRESS, onto stdio stream STREAM according to
-   OPTIONS.  The data at VALADDR is in target byte order.
-
-   If the data are a string pointer, returns the number of string characters
-   printed.  */
+/* See val_print for a description of the various parameters of this
+   function; they are identical.  The semantics of the return value is
+   also identical to val_print.  */
 
 int
 java_val_print (struct type *type, const gdb_byte *valaddr,
                int embedded_offset, CORE_ADDR address,
                struct ui_file *stream, int recurse,
+               const struct value *val,
                const struct value_print_options *options)
 {
   struct gdbarch *gdbarch = get_type_arch (type);
-  unsigned int i = 0;  /* Number of characters printed */
+  unsigned int i = 0;  /* Number of characters printed */
   struct type *target_type;
   CORE_ADDR addr;
 
@@ -480,7 +497,8 @@ java_val_print (struct type *type, const gdb_byte *valaddr,
     case TYPE_CODE_PTR:
       if (options->format && options->format != 's')
        {
-         print_scalar_formatted (valaddr, type, options, 0, stream);
+         val_print_scalar_formatted (type, valaddr, embedded_offset,
+                                     val, options, 0, stream);
          break;
        }
 #if 0
@@ -488,15 +506,17 @@ java_val_print (struct type *type, const gdb_byte *valaddr,
        {
          /* Print the unmangled name if desired.  */
          /* Print vtable entry - we only get here if we ARE using
-            -fvtable_thunks.  (Otherwise, look under TYPE_CODE_STRUCT.) */
+            -fvtable_thunks.  (Otherwise, look under TYPE_CODE_STRUCT.)  */
          /* Extract an address, assume that it is unsigned.  */
-         print_address_demangle (gdbarch,
-                                 extract_unsigned_integer (valaddr, TYPE_LENGTH (type)),
-                                 stream, demangle);
+         print_address_demangle
+           (gdbarch,
+            extract_unsigned_integer (valaddr + embedded_offset,
+                                      TYPE_LENGTH (type)),
+            stream, demangle);
          break;
        }
 #endif
-      addr = unpack_pointer (type, valaddr);
+      addr = unpack_pointer (type, valaddr + embedded_offset);
       if (addr == 0)
        {
          fputs_filtered ("null", stream);
@@ -530,25 +550,27 @@ java_val_print (struct type *type, const gdb_byte *valaddr,
 
          opts.format = (options->format ? options->format
                         : options->output_format);
-         print_scalar_formatted (valaddr, type, &opts, 0, stream);
+         val_print_scalar_formatted (type, valaddr, embedded_offset,
+                                     val, &opts, 0, stream);
        }
       else if (TYPE_CODE (type) == TYPE_CODE_CHAR
               || (TYPE_CODE (type) == TYPE_CODE_INT
                   && TYPE_LENGTH (type) == 2
                   && strcmp (TYPE_NAME (type), "char") == 0))
-       LA_PRINT_CHAR ((int) unpack_long (type, valaddr), type, stream);
+       LA_PRINT_CHAR ((int) unpack_long (type, valaddr + embedded_offset),
+                      type, stream);
       else
-       val_print_type_code_int (type, valaddr, stream);
+       val_print_type_code_int (type, valaddr + embedded_offset, stream);
       break;
 
     case TYPE_CODE_STRUCT:
-      java_print_value_fields (type, valaddr, address, stream, recurse,
-                              options);
+      java_print_value_fields (type, valaddr, embedded_offset,
+                              address, stream, recurse, val, options);
       break;
 
     default:
       return c_val_print (type, valaddr, embedded_offset, address, stream,
-                         recurse, options);
+                         recurse, val, options);
     }
 
   return 0;
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