Check in a pristine copy of GCC 4.8.1.

The copy of GCC that we use for Android is still not working for
mingw. Rather than finding all the differences that have crept into
our GCC, just check in a copy from
ftp://ftp.gnu.org/gnu/gcc/gcc-4.9.3/gcc-4.8.1.tar.bz2.

GCC 4.8.1 was chosen because it is what we have been using for mingw
thus far, and the emulator doesn't yet work when upgrading to 4.9.

Bug: http://b/26523949
Change-Id: Iedc0f05243d4332cc27ccd46b8a4b203c88dcaa3

1 files changed, 218 insertions, 0 deletions

diff --git a/gcc-4.8.1/fixincludes/procopen.c b/gcc-4.8.1/fixincludes/procopen.c
new file mode 100644
index 000000000..22d4f6793
--- /dev/null
+++ b/gcc-4.8.1/fixincludes/procopen.c
@@ -0,0 +1,218 @@
+
+/*
+ *  server.c  Set up and handle communications with a server process.
+ *
+ *  Server Handling copyright 1992-1999, 2004 The Free Software Foundation
+ *
+ *  Server Handling is free software.
+ *  You may redistribute it and/or modify it under the terms of the
+ *  GNU General Public License, as published by the Free Software
+ *  Foundation; either version 2, or (at your option) any later version.
+ *
+ *  Server Handling 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 Server Handling.  See the file "COPYING".  If not,
+ *  write to:  The Free Software Foundation, Inc.,
+ *             51 Franklin Street, Fifth Floor,
+ *             Boston,  MA  02110-1301, USA.
+ *
+ * As a special exception, The Free Software Foundation gives
+ * permission for additional uses of the text contained in his release
+ * of ServerHandler.
+ *
+ * The exception is that, if you link the ServerHandler library with other
+ * files to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the ServerHandler library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by The Free
+ * Software Foundation under the name ServerHandler.  If you copy code
+ * from other sources under the General Public License into a copy of
+ * ServerHandler, as the General Public License permits, the exception
+ * does not apply to the code that you add in this way.  To avoid
+ * misleading anyone as to the status of such modified files, you must
+ * delete this exception notice from them.
+ *
+ * If you write modifications of your own for ServerHandler, it is your
+ * choice whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.
+ */
+
+#include "fixlib.h"
+#include "server.h"
+
+STATIC const char* def_args[] =
+{ (char *) NULL, (char *) NULL };
+
+/*
+ *  chain_open
+ *
+ *  Given an FD for an inferior process to use as stdin,
+ *  start that process and return a NEW FD that that process
+ *  will use for its stdout.  Requires the argument vector
+ *  for the new process and, optionally, a pointer to a place
+ *  to store the child's process id.
+ */
+int
+chain_open (int stdin_fd, tCC** pp_args, pid_t* p_child)
+{
+  t_fd_pair stdout_pair;
+  pid_t ch_id;
+  tCC *pz_cmd;
+
+  stdout_pair.read_fd = stdout_pair.write_fd = -1;
+
+  /*
+   *  Create a pipe it will be the child process' stdout,
+   *  and the parent will read from it.
+   */
+  if (pipe ((int *) &stdout_pair) < 0)
+    {
+      if (p_child != (pid_t *) NULL)
+        *p_child = NOPROCESS;
+      return -1;
+    }
+
+  /*
+   *  If we did not get an arg list, use the default
+   */
+  if (pp_args == (tCC **) NULL)
+    pp_args = def_args;
+
+  /*
+   *  If the arg list does not have a program,
+   *  assume the "SHELL" from the environment, or, failing
+   *  that, then sh.  Set argv[0] to whatever we decided on.
+   */
+  if (pz_cmd = *pp_args,
+      (pz_cmd == (char *) NULL) || (*pz_cmd == '\0'))
+    {
+
+      pz_cmd = getenv ("SHELL");
+      if (pz_cmd == (char *) NULL)
+        pz_cmd = "sh";
+    }
+
+#ifdef DEBUG_PRINT
+  printf ("START:  %s\n", pz_cmd);
+  {
+    int idx = 0;
+    
+    while (pp_args[++idx] != (char *) NULL)
+      printf ("  ARG %2d:  %s\n", idx, pp_args[idx]);
+  }
+#endif
+
+  /*
+   *  Call fork() and see which process we become
+   */
+  ch_id = fork ();
+  switch (ch_id)
+    {
+    case NOPROCESS:             /* parent - error in call */
+      close (stdout_pair.read_fd);
+      close (stdout_pair.write_fd);
+      if (p_child != (pid_t *) NULL)
+        *p_child = NOPROCESS;
+      return -1;
+
+    default:                    /* parent - return opposite FD's */
+      if (p_child != (pid_t *) NULL)
+        *p_child = ch_id;
+#ifdef DEBUG_PRINT
+      printf ("for pid %d:  stdin from %d, stdout to %d\n"
+              "for parent:  read from %d\n",
+              ch_id, stdin_fd, stdout_pair.write_fd, stdout_pair.read_fd);
+#endif
+      close (stdin_fd);
+      close (stdout_pair.write_fd);
+      return stdout_pair.read_fd;
+
+    case NULLPROCESS:           /* child - continue processing */
+      break;
+    }
+
+  /*
+   *  Close the pipe end handed back to the parent process
+   */
+  close (stdout_pair.read_fd);
+
+  /*
+   *  Close our current stdin and stdout
+   */
+  close (STDIN_FILENO);
+  close (STDOUT_FILENO);
+
+  /*
+   *  Make the fd passed in the stdin, and the write end of
+   *  the new pipe become the stdout.
+   */
+  dup2 (stdout_pair.write_fd, STDOUT_FILENO);
+  dup2 (stdin_fd, STDIN_FILENO);
+
+  if (*pp_args == (char *) NULL)
+    *pp_args = pz_cmd;
+
+  execvp (pz_cmd, (char**)pp_args);
+  fprintf (stderr, "Error %d:  Could not execvp( '%s', ... ):  %s\n",
+           errno, pz_cmd, xstrerror (errno));
+  exit (EXIT_PANIC);
+}
+
+
+/*
+ *  proc2_open
+ *
+ *  Given a pointer to an argument vector, start a process and
+ *  place its stdin and stdout file descriptors into an fd pair
+ *  structure.  The "write_fd" connects to the inferior process
+ *  stdin, and the "read_fd" connects to its stdout.  The calling
+ *  process should write to "write_fd" and read from "read_fd".
+ *  The return value is the process id of the created process.
+ */
+pid_t
+proc2_open (t_fd_pair* p_pair, tCC** pp_args)
+{
+  pid_t ch_id;
+
+  /*  Create a bi-directional pipe.  Writes on 0 arrive on 1 and vice
+     versa, so the parent and child processes will read and write to
+     opposite FD's.  */
+  if (pipe ((int *) p_pair) < 0)
+    return NOPROCESS;
+
+  p_pair->read_fd = chain_open (p_pair->read_fd, pp_args, &ch_id);
+  if (ch_id == NOPROCESS)
+    close (p_pair->write_fd);
+
+  return ch_id;
+}
+
+
+/*
+ *  proc2_fopen
+ *
+ *  Identical to "proc2_open()", except that the "fd"'s are
+ *  "fdopen(3)"-ed into file pointers instead.
+ */
+pid_t
+proc2_fopen (t_pf_pair* pf_pair, tCC** pp_args)
+{
+  t_fd_pair fd_pair;
+  pid_t ch_id = proc2_open (&fd_pair, pp_args);
+
+  if (ch_id == NOPROCESS)
+    return ch_id;
+
+  pf_pair->pf_read = fdopen (fd_pair.read_fd, "r");
+  pf_pair->pf_write = fdopen (fd_pair.write_fd, "w");
+  return ch_id;
+}