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, 29 insertions, 0 deletions

diff --git a/libgo/syscalls/errstr.go b/libgo/syscalls/errstr.go
new file mode 100644
index 0000000..961df40
--- /dev/null
+++ b/libgo/syscalls/errstr.go
@@ -0,0 +1,29 @@
+// errstr.go -- Error strings.
+
+// 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.
+
+package syscall
+
+const ENONE = 0
+
+func GetErrno() int
+func SetErrno(int)
+
+func Errstr(errno int) string {
+	for len := Size_t(128); ; len *= 2 {
+		b := make([]byte, len)
+		r := libc_strerror_r(errno, &b[0], len)
+		if r >= 0 {
+			i := 0
+			for b[i] != 0 {
+				i++
+			}
+			return string(b[:i])
+		}
+		if GetErrno() != ERANGE {
+			return "Errstr failure"
+		}
+	}
+}