2003-10-22 Andrew Cagney <cagney@redhat.com>
[deliverable/binutils-gdb.git] / gdb / c-valprint.c
index f791e4c20deb2f8f20aa93980433da5ac96f3d53..fd42ae0b908d6fdea2793da908fa2c86a3b5e10b 100644 (file)
@@ -1,6 +1,7 @@
 /* Support for printing C values for GDB, the GNU debugger.
-   Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997
-   Free Software Foundation, Inc.
+
+   Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
+   1997, 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    Boston, MA 02111-1307, USA.  */
 
 #include "defs.h"
+#include "gdb_string.h"
 #include "symtab.h"
 #include "gdbtypes.h"
 #include "expression.h"
 #include "value.h"
-#include "demangle.h"
 #include "valprint.h"
 #include "language.h"
 #include "c-lang.h"
+#include "cp-abi.h"
+#include "target.h"
 \f
 
+/* Print function pointer with inferior address ADDRESS onto stdio
+   stream STREAM.  */
+
+static void
+print_function_pointer_address (CORE_ADDR address, struct ui_file *stream)
+{
+  CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
+                                                           address,
+                                                           &current_target);
+
+  /* If the function pointer is represented by a description, print the
+     address of the description.  */
+  if (addressprint && func_addr != address)
+    {
+      fputs_filtered ("@", stream);
+      print_address_numeric (address, 1, stream);
+      fputs_filtered (": ", stream);
+    }
+  print_address_demangle (func_addr, stream, demangle);
+}
+
+
 /* Print data of type TYPE located at VALADDR (within GDB), which came from
    the inferior at address ADDRESS, onto stdio stream STREAM according to
    FORMAT (a letter or 0 for natural format).  The data at VALADDR is in
    The PRETTY parameter controls prettyprinting.  */
 
 int
-c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref, recurse,
-            pretty)
-     struct type *type;
-     char *valaddr;
-     int embedded_offset;
-     CORE_ADDR address;
-     GDB_FILE *stream;
-     int format;
-     int deref_ref;
-     int recurse;
-     enum val_prettyprint pretty;
+c_val_print (struct type *type, char *valaddr, int embedded_offset,
+            CORE_ADDR address, struct ui_file *stream, int format,
+            int deref_ref, int recurse, enum val_prettyprint pretty)
 {
-  register unsigned int i = 0; /* Number of characters printed */
+  unsigned int i = 0;  /* Number of characters printed */
   unsigned len;
   struct type *elttype;
   unsigned eltlen;
@@ -87,7 +104,7 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
                 elements up to it.  */
              if (stop_print_at_null)
                {
-                 int temp_len;
+                 unsigned int temp_len;
 
                  /* Look for a NULL char. */
                  for (temp_len = 0;
@@ -135,8 +152,9 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
          /* 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.) */
-         print_address_demangle (extract_address (valaddr + embedded_offset, TYPE_LENGTH (type)),
-                                 stream, demangle);
+         CORE_ADDR addr
+           = extract_typed_address (valaddr + embedded_offset, type);
+         print_function_pointer_address (addr, stream);
          break;
        }
       elttype = check_typedef (TYPE_TARGET_TYPE (type));
@@ -154,12 +172,11 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
        {
          addr = unpack_pointer (type, valaddr + embedded_offset);
        print_unpacked_pointer:
-         elttype = check_typedef (TYPE_TARGET_TYPE (type));
 
          if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
            {
              /* Try to print what function it points to.  */
-             print_address_demangle (addr, stream, demangle);
+             print_function_pointer_address (addr, stream);
              /* Return value is irrelevant except for string pointers.  */
              return (0);
            }
@@ -191,21 +208,20 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
                  (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
                {
                  fputs_filtered (" <", stream);
-                 fputs_filtered (SYMBOL_SOURCE_NAME (msymbol), stream);
+                 fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream);
                  fputs_filtered (">", stream);
                }
              if (vt_address && vtblprint)
                {
-                 value_ptr vt_val;
+                 struct value *vt_val;
                  struct symbol *wsym = (struct symbol *) NULL;
                  struct type *wtype;
-                 struct symtab *s;
                  struct block *block = (struct block *) NULL;
                  int is_this_fld;
 
                  if (msymbol != NULL)
-                   wsym = lookup_symbol (SYMBOL_NAME (msymbol), block,
-                                         VAR_NAMESPACE, &is_this_fld, &s);
+                   wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block,
+                                         VAR_DOMAIN, &is_this_fld, NULL);
 
                  if (wsym)
                    {
@@ -249,10 +265,10 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
        }
       if (addressprint)
        {
+         CORE_ADDR addr
+           = extract_typed_address (valaddr + embedded_offset, type);
          fprintf_filtered (stream, "@");
-         print_address_numeric
-           (extract_address (valaddr + embedded_offset,
-                             TARGET_PTR_BIT / HOST_CHAR_BIT), 1, stream);
+         print_address_numeric (addr, 1, stream);
          if (deref_ref)
            fputs_filtered (": ", stream);
        }
@@ -261,7 +277,7 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
        {
          if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
            {
-             value_ptr deref_val =
+             struct value *deref_val =
              value_at
              (TYPE_TARGET_TYPE (type),
               unpack_pointer (lookup_pointer_type (builtin_type_void),
@@ -290,16 +306,19 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
        }
       /* Fall through.  */
     case TYPE_CODE_STRUCT:
+      /*FIXME: Abstract this away */
       if (vtblprint && cp_is_vtbl_ptr_type (type))
        {
          /* Print the unmangled name if desired.  */
          /* Print vtable entry - we only get here if NOT using
             -fvtable_thunks.  (Otherwise, look under TYPE_CODE_PTR.) */
-         print_address_demangle (extract_address (
-                                                valaddr + embedded_offset +
-                          TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8,
-                 TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))),
-                                 stream, demangle);
+         int offset = (embedded_offset +
+                       TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8);
+         struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
+         CORE_ADDR addr
+           = extract_typed_address (valaddr + offset, field_type);
+
+         print_function_pointer_address (addr, stream);
        }
       else
        cp_print_value_fields (type, type, valaddr, embedded_offset, address, stream, format,
@@ -403,10 +422,13 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
        }
       else
        {
-         fprintf_filtered (stream, TYPE_UNSIGNED (type) ? "%u" : "%d",
-                           unpack_long (type, valaddr + embedded_offset));
+         val = unpack_long (type, valaddr + embedded_offset);
+         if (TYPE_UNSIGNED (type))
+           fprintf_filtered (stream, "%u", (unsigned int) val);
+         else
+           fprintf_filtered (stream, "%d", (int) val);
          fputs_filtered (" ", stream);
-         LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset), stream);
+         LA_PRINT_CHAR ((unsigned char) val, stream);
        }
       break;
 
@@ -422,8 +444,12 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
       break;
 
     case TYPE_CODE_METHOD:
-      cp_print_class_method (valaddr + embedded_offset, lookup_pointer_type (type), stream);
-      break;
+      {
+       struct value *v = value_at (type, address, NULL);
+       cp_print_class_method (VALUE_CONTENTS (value_addr (v)),
+                              lookup_pointer_type (type), stream);
+       break;
+      }
 
     case TYPE_CODE_VOID:
       fprintf_filtered (stream, "void");
@@ -440,6 +466,28 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
       fprintf_filtered (stream, "<incomplete type>");
       break;
 
+    case TYPE_CODE_COMPLEX:
+      if (format)
+       print_scalar_formatted (valaddr + embedded_offset,
+                               TYPE_TARGET_TYPE (type),
+                               format, 0, stream);
+      else
+       print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type),
+                       stream);
+      fprintf_filtered (stream, " + ");
+      if (format)
+       print_scalar_formatted (valaddr + embedded_offset
+                               + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
+                               TYPE_TARGET_TYPE (type),
+                               format, 0, stream);
+      else
+       print_floating (valaddr + embedded_offset
+                       + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
+                       TYPE_TARGET_TYPE (type),
+                       stream);
+      fprintf_filtered (stream, " * I");
+      break;
+
     default:
       error ("Invalid C/C++ type code %d in symbol table.", TYPE_CODE (type));
     }
@@ -448,11 +496,8 @@ c_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref,
 }
 \f
 int
-c_value_print (val, stream, format, pretty)
-     value_ptr val;
-     GDB_FILE *stream;
-     int format;
-     enum val_prettyprint pretty;
+c_value_print (struct value *val, struct ui_file *stream, int format,
+              enum val_prettyprint pretty)
 {
   struct type *type = VALUE_TYPE (val);
   struct type *real_type;
@@ -472,28 +517,46 @@ c_value_print (val, stream, format, pretty)
       if (TYPE_CODE (type) == TYPE_CODE_PTR &&
          TYPE_NAME (type) == NULL &&
          TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL &&
-         STREQ (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char"))
+         strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
        {
          /* Print nothing */
        }
       else if (objectprint && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
        {
+
+         if (TYPE_CODE(type) == TYPE_CODE_REF)
+           {
+             /* Copy value, change to pointer, so we don't get an
+              * error about a non-pointer type in value_rtti_target_type
+              */
+             struct value *temparg;
+             temparg=value_copy(val);
+             VALUE_TYPE (temparg) = lookup_pointer_type(TYPE_TARGET_TYPE(type));
+             val=temparg;
+           }
          /* Pointer to class, check real type of object */
          fprintf_filtered (stream, "(");
-         type = value_rtti_target_type (val, &full, &top, &using_enc);
-         if (type)
+          real_type = value_rtti_target_type (val, &full, &top, &using_enc);
+          if (real_type)
            {
              /* RTTI entry found */
-             type = lookup_pointer_type (type);
-             type_print (type, "", stream, -1);
-           }
-         else
-           {
-             /* No RTTI fields, do whatever we can */
-             type = VALUE_ENCLOSING_TYPE (val);
-             type_print (type, "", stream, -1);
-             fprintf_filtered (stream, " ?");
-           }
+              if (TYPE_CODE (type) == TYPE_CODE_PTR)
+                {
+                  /* create a pointer type pointing to the real type */
+                  type = lookup_pointer_type (real_type);
+                }
+              else
+                {
+                  /* create a reference type referencing the real type */
+                  type = lookup_reference_type (real_type);
+                }
+             /* JYG: Need to adjust pointer value. */
+              val->aligner.contents[0] -= top;
+
+              /* Note: When we look up RTTI entries, we don't get any 
+                 information on const or volatile attributes */
+            }
+          type_print (type, "", stream, -1);
          fprintf_filtered (stream, ") ");
        }
       else
@@ -518,6 +581,8 @@ c_value_print (val, stream, format, pretty)
          /* Print out object: enclosing type is same as real_type if full */
          return val_print (VALUE_ENCLOSING_TYPE (val), VALUE_CONTENTS_ALL (val), 0,
                         VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
+          /* Note: When we look up RTTI entries, we don't get any information on
+             const or volatile attributes */
        }
       else if (type != VALUE_ENCLOSING_TYPE (val))
        {
@@ -530,7 +595,8 @@ c_value_print (val, stream, format, pretty)
       /* Otherwise, we end up at the return outside this "if" */
     }
 
-  return val_print (type, VALUE_CONTENTS_ALL (val), VALUE_EMBEDDED_OFFSET (val),
-                   VALUE_ADDRESS (val),
+  return val_print (type, VALUE_CONTENTS_ALL (val),
+                   VALUE_EMBEDDED_OFFSET (val),
+                   VALUE_ADDRESS (val) + VALUE_OFFSET (val),
                    stream, format, 1, 0, pretty);
 }
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