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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167407 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 78 insertions, 0 deletions

diff --git a/libgo/go/net/newpollserver_rtems.go b/libgo/go/net/newpollserver_rtems.go
new file mode 100644
index 00000000000..05cb71a54da
--- /dev/null
+++ b/libgo/go/net/newpollserver_rtems.go
@@ -0,0 +1,78 @@
+// Copyright 2010 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 net
+
+import (
+	"os"
+	"syscall"
+)
+
+func selfConnectedTCPSocket() (pr, pw *os.File, err os.Error) {
+	// See ../syscall/exec.go for description of ForkLock.
+	syscall.ForkLock.RLock()
+	sockfd, e := syscall.Socket(syscall.AF_INET, syscall.SOCK_STREAM, 0)
+	if e != 0 {
+		syscall.ForkLock.RUnlock()
+		return nil, nil, os.Errno(e)
+	}
+	syscall.CloseOnExec(sockfd)
+	syscall.ForkLock.RUnlock()
+
+	// Allow reuse of recently-used addresses.
+	syscall.SetsockoptInt(sockfd, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
+
+	var laTCP *TCPAddr
+	var la syscall.Sockaddr
+	if laTCP, err = ResolveTCPAddr("127.0.0.1:0"); err != nil {
+	Error:
+		return nil, nil, err
+	}
+	if la, err = laTCP.sockaddr(syscall.AF_INET); err != nil {
+		goto Error
+	}
+	e = syscall.Bind(sockfd, la)
+	if e != 0 {
+	Errno:
+		syscall.Close(sockfd)
+		return nil, nil, os.Errno(e)
+	}
+
+	laddr, _ := syscall.Getsockname(sockfd)
+	e = syscall.Connect(sockfd, laddr)
+	if e != 0 {
+		goto Errno
+	}
+
+	fd := os.NewFile(sockfd, "wakeupSocket")
+	return fd, fd, nil
+}
+
+func newPollServer() (s *pollServer, err os.Error) {
+	s = new(pollServer)
+	s.cr = make(chan *netFD, 1)
+	s.cw = make(chan *netFD, 1)
+	// s.pr and s.pw are indistinguishable.
+	if s.pr, s.pw, err = selfConnectedTCPSocket(); err != nil {
+		return nil, err
+	}
+	var e int
+	if e = syscall.SetNonblock(s.pr.Fd(), true); e != 0 {
+	Errno:
+		err = &os.PathError{"setnonblock", s.pr.Name(), os.Errno(e)}
+	Error:
+		s.pr.Close()
+		return nil, err
+	}
+	if s.poll, err = newpollster(); err != nil {
+		goto Error
+	}
+	if err = s.poll.AddFD(s.pr.Fd(), 'r', true); err != nil {
+		s.poll.Close()
+		goto Error
+	}
+	s.pending = make(map[int]*netFD)
+	go s.Run()
+	return s, nil
+}