From 6aecb9c22867107c03be7d1650fd4d2483f7e380 Mon Sep 17 00:00:00 2001
From: Joel Brobecker <brobecker@gnat.com>
Date: Thu, 29 Apr 2010 14:45:39 +0000
Subject: D language support.

gdb/ChangeLog:

        D language support.
        * Makefile.in (SFILES): Add d-lang.c d-valprint.c.
        (COMMON_OBS): Add d-lang.o d-valprint.o.
        (HFILES_NO_SRCDIR): Add d-lang.h.
        * NEWS: Mention D language support.
        * c-lang.c (c_emit_char, exp_descriptor_c): Make public.
        * c-lang.h (c_emit_char, exp_descriptor_c): Add declaration.
        * d-lang.c: New file.
        * d-lang.h: New file.
        * d-valprint.c: New file.
        * defs.h (enum language): Add language_d.
        * dwarf2read.c (set_cu_language): Add DW_LANG_D.
        * language.c (binop_result_type, integral_type, character_type)
        (string_type, boolean_type, structured_type): Add language_d.
        * symfile.c (init_filename_language_table): Add language_d.
        * symtab.c: Include d-lang.h.
        (symbol_init_language_specific, symbol_find_demangled_name)
        (symbol_natural_name, lookup_symbol_in_language)
        (symbol_demangled_name, symbol_matches_domain): Add language_d.

gdb/doc/ChangeLog:

        * gdb.texinfo: (Summary) Add mention about D language support.
        (Filenames): Add D suffixes.
        (D): New node.

gdb/testsuite/ChangeLog:

        * gdb.base/default.exp: Fix "set language" test.
---
 gdb/d-valprint.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 gdb/d-valprint.c

(limited to 'gdb/d-valprint.c')

diff --git a/gdb/d-valprint.c b/gdb/d-valprint.c
new file mode 100644
index 0000000..67b32b7
--- /dev/null
+++ b/gdb/d-valprint.c
@@ -0,0 +1,91 @@
+/* Support for printing D values for GDB, the GNU debugger.
+
+   Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "gdbtypes.h"
+#include "gdbcore.h"
+#include "d-lang.h"
+#include "c-lang.h"
+
+/* Assuming that TYPE is a TYPE_CODE_STRUCT, verify that TYPE is
+   a dynamic array, and then print its value to STREAM.  Return
+   the number of string characters printed, or -1 if TYPE is not
+   a dynamic array.  */
+static int
+dynamic_array_type (struct type *type, const gdb_byte *valaddr,
+		    int embedded_offset, CORE_ADDR address,
+		    struct ui_file *stream, int recurse,
+		    const struct value_print_options *options)
+{
+  if (TYPE_NFIELDS (type) == 2
+      && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_INT
+      && strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
+      && strcmp (TYPE_FIELD_NAME (type, 1), "ptr") == 0)
+    {
+      CORE_ADDR addr;
+      struct type *elttype;
+      struct type *true_type;
+      struct type *ptr_type;
+      struct type *range_type;
+      const gdb_byte *ptraddr;
+      struct value *val;
+      int length;
+
+      length = unpack_field_as_long (type, valaddr + embedded_offset, 0);
+
+      ptr_type = TYPE_FIELD_TYPE (type, 1);
+      elttype = check_typedef (TYPE_TARGET_TYPE (ptr_type));
+      addr = unpack_pointer (ptr_type,
+			     valaddr + TYPE_FIELD_BITPOS (type, 1) / 8
+			     + embedded_offset);
+      true_type = check_typedef (elttype);
+
+      true_type = lookup_array_range_type (true_type, 0, length - 1);
+      val = value_at (true_type, addr);
+      ptraddr = value_contents (val);
+
+      return d_val_print (true_type, ptraddr, 0, addr, stream, recurse + 1,
+			  options);
+    }
+  return -1;
+}
+
+/* Implements the la_val_print routine for language D.  */
+int
+d_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
+             CORE_ADDR address, struct ui_file *stream, int recurse,
+             const struct value_print_options *options)
+{
+  int ret;
+
+  CHECK_TYPEDEF (type);
+  switch (TYPE_CODE (type))
+    {
+      case TYPE_CODE_STRUCT:
+        ret = dynamic_array_type (type, valaddr, embedded_offset, address,
+				  stream, recurse, options);
+	if (ret != -1)
+	   break;
+      default:
+	ret = c_val_print (type, valaddr, embedded_offset, address, stream,
+			   recurse, options);
+    }
+
+  return ret;
+}
-- 
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