Initial pass at Go language support.

	* NEWS: Mention Go.
	* Makefile.in (SFILES): Add go-exp.y, go-lang.c, go-typeprint.c,
	go-valprint.c.
	(COMMON_OBS): Add go-lang.o, go-val.print.o, go-typeprint.o.
	(YYFILES): Add go-exp.c.
	(YYOBJ): Add go-exp.o.
	(local-maintainer-clean): Delete go-exp.c.
	* defs.h (enum language): Add language_go.
	* dwarf2read.c: #include "go-lang.h".
	(fixup_go_packaging): New function.
	(process_full_comp_unit): Call it when processing Go CUs.
	(dwarf2_physname): Add Go support.
	(read_file_scope): Handle missing language spec for GNU Go.
	(set_cu_language): Handle DW_LANG_Go.
	* go-exp.y: New file.
	* go-lang.h: New file.
	* go-lang.c: New file.
	* go-typeprint.c: New file.
	* go-valprint.c: New file.
	* symtab.c: #include "go-lang.h".
	(symbol_set_language): Handle language_go.
	(symbol_find_demangled_name, symbol_set_names): Ditto.
	(symbol_natural_name, demangle_for_lookup, find_main_name): Ditto.

	testsuite/
	* configure.ac: Create gdb.go/Makefile.
	* configure: Regenerate.
	* gdb.base/default.exp: Add "go" to "set language" testing.
	* gdb.go/Makefile.in: New file.
	* gdb.go/basic-types.exp: New file.
	* gdb.go/chan.exp: New file.
	* gdb.go/chan.go: New file.
	* gdb.go/handcall.exp: New file.
	* gdb.go/handcall.go: New file.
	* gdb.go/hello.exp: New file.
	* gdb.go/hello.go: New file.
	* gdb.go/integers.exp: New file.
	* gdb.go/integers.go: New file.
	* gdb.go/methods.exp: New file.
	* gdb.go/methods.go: New file.
	* gdb.go/package.exp: New file.
	* gdb.go/package1.go: New file.
	* gdb.go/package2.go: New file.
	* gdb.go/print.exp: New file.
	* gdb.go/strings.exp: New file.
	* gdb.go/strings.go: New file.
	* gdb.go/types.exp: New file.
	* gdb.go/types.go: New file.
	* gdb.go/unsafe.exp: New file.
	* gdb.go/unsafe.go: New file.
	* lib/future.exp: Add Go support.
	(gdb_find_go, gdb_find_go_linker): New procs.
	(gdb_default_target_compile): Add Go support.
	* lib/gdb.exp (skip_go_tests): New proc.
	* lib/go.exp: New file.

	doc/
	* gdb.texinfo (Supported Languages): Add Go.
	(Go): New node.

1 files changed, 62 insertions, 0 deletions

diff --git a/gdb/go-typeprint.c b/gdb/go-typeprint.c
new file mode 100644
index 00000000000..a76c3dc7ffb
--- /dev/null
+++ b/gdb/go-typeprint.c
@@ -0,0 +1,62 @@
+/* Support for printing Go types for GDB, the GNU debugger.
+
+   Copyright (C) 2012 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/>.  */
+
+/* TODO:
+   - lots
+   - if the more complex types get Python pretty-printers, we'll
+     want a Python API for type printing
+*/
+
+#include "defs.h"
+#include "gdbtypes.h"
+#include "c-lang.h"
+#include "go-lang.h"
+
+/* Print a description of a type TYPE.
+   Output goes to STREAM (via stdio).
+   If VARSTRING is a non-empty string, print as an Ada variable/field
+       declaration.
+   SHOW+1 is the maximum number of levels of internal type structure
+      to show (this applies to record types, enumerated types, and
+      array types).
+   SHOW is the number of levels of internal type structure to show
+      when there is a type name for the SHOWth deepest level (0th is
+      outer level).
+   When SHOW<0, no inner structure is shown.
+   LEVEL indicates level of recursion (for nested definitions).  */
+
+void
+go_print_type (struct type *type, const char *varstring,
+	       struct ui_file *stream, int show, int level)
+{
+  /* Borrowed from c-typeprint.c.  */
+  if (show > 0)
+    CHECK_TYPEDEF (type);
+
+  /* Print the type of "abc" as "string", not char[4].  */
+  if (TYPE_CODE (type) == TYPE_CODE_ARRAY
+      && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CHAR)
+    {
+      fputs_filtered ("string", stream);
+      return;
+    }
+
+  /* Punt the rest to C for now.  */
+  c_print_type (type, varstring, stream, show, level);
+}