Add Go frontend, libgo library, and Go testsuite.

gcc/:
	* gcc.c (default_compilers): Add entry for ".go".
	* common.opt: Add -static-libgo as a driver option.
	* doc/install.texi (Configuration): Mention libgo as an option for
	--enable-shared.  Mention go as an option for --enable-languages.
	* doc/invoke.texi (Overall Options): Mention .go as a file name
	suffix.  Mention go as a -x option.
	* doc/frontends.texi (G++ and GCC): Mention Go as a supported
	language.
	* doc/sourcebuild.texi (Top Level): Mention libgo.
	* doc/standards.texi (Standards): Add section on Go language.
	Move references for other languages into their own section.
	* doc/contrib.texi (Contributors): Mention that I contributed the
	Go frontend.
gcc/testsuite/:
	* lib/go.exp: New file.
	* lib/go-dg.exp: New file.
	* lib/go-torture.exp: New file.
	* lib/target-supports.exp (check_compile): Match // Go.

From-SVN: r167407

1 files changed, 30 insertions, 0 deletions

diff --git a/libgo/runtime/go-unreflect.c b/libgo/runtime/go-unreflect.c
new file mode 100644
index 00000000000..88604854876
--- /dev/null
+++ b/libgo/runtime/go-unreflect.c
@@ -0,0 +1,30 @@
+/* go-unreflect.c -- implement unsafe.Unreflect for Go.
+
+   Copyright 2009 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include "go-alloc.h"
+#include "go-type.h"
+#include "interface.h"
+
+/* Implement unsafe.Unreflect.  */
+
+struct __go_empty_interface Unreflect (struct __go_empty_interface type,
+				       void *object)
+  asm ("libgo_unsafe.unsafe.Unreflect");
+
+struct __go_empty_interface
+Unreflect (struct __go_empty_interface type, void *object)
+{
+  struct __go_empty_interface ret;
+
+  /* FIXME: We should check __type_descriptor to verify that this is
+     really a type descriptor.  */
+  ret.__type_descriptor = type.__object;
+  if (__go_is_pointer_type (ret.__type_descriptor))
+    ret.__object = *(void **) object;
+  else
+    ret.__object = object;
+  return ret;
+}