Native Client side changes for debugging support: stdout/err -> postmessage.

src/trusted/service_runtime/nacl_syscall_common.c

 /*
  * Copyright (c) 2011 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * NaCl service run-time, non-platform specific system call helper routines.
  */
 #include <sys/types.h>
@@ skipping 762 matching lines @@
 
   NaClLog(3,
           "Entered NaClCommonSysWrite(0x%08"NACL_PRIxPTR", "
           "%d, 0x%08"NACL_PRIxPTR", "
           "%"NACL_PRIdS"[0x%"NACL_PRIxS"])\n",
           (uintptr_t) natp, d, (uintptr_t) buf, count, count);
 
   NaClSysCommonThreadSyscallEnter(natp);
 
   ndp = NaClGetDesc(natp->nap, d);
+  NaClLog(4, " ndp = %"NACL_PRIxPTR"\n", (uintptr_t) ndp);
   if (NULL == ndp) {
     retval = -NACL_ABI_EBADF;
     goto cleanup;
   }
 
   sysaddr = NaClUserToSysAddrRange(natp->nap, (uintptr_t) buf, count);
   if (kNaClBadAddress == sysaddr) {
     NaClDescUnref(ndp);
     retval = -NACL_ABI_EFAULT;
     goto cleanup;
@@ skipping 1998 matching lines @@
 # else
 # error Unsupported platform
 # endif
 
 #endif
 
   UNREFERENCED_PARAMETER(natp);
 
   return -NACL_ABI_ENOSYS;
 }