Initial revision of ARM simulator and (empty) MIPS simulator.

runtime/vm/os_android.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/os.h"
 
 #include <android/log.h>
 #include <errno.h>
 #include <limits.h>
 #include <malloc.h>
@@ skipping 291 matching lines @@
   return sysconf(_SC_NPROCESSORS_ONLN);
 }
 
 
 void OS::Sleep(int64_t millis) {
   // TODO(5411554):  For now just use usleep we may have to revisit this.
   usleep(millis * 1000);
 }
 
 
+void OS::DebugBreak() {
+  UNIMPLEMENTED();
+}
+
+
 void OS::Print(const char* format, ...) {
   va_list args;
   va_start(args, format);
   VFPrint(stdout, format, args);
   // Forward to the Android log for remote access.
   __android_log_vprint(ANDROID_LOG_INFO, "DartVM", format, args);
   va_end(args);
 }
 
 
@@ skipping 59 matching lines @@
 void OS::PrintErr(const char* format, ...) {
   va_list args;
   va_start(args, format);
   VFPrint(stderr, format, args);
   // Forward to the Android log for remote access.
   __android_log_vprint(ANDROID_LOG_ERROR, "DartVM", format, args);
   va_end(args);
 }
 
 
+// Cache the null page size.
+uword OS::null_page_size_ = 0;
+
+
 void OS::InitOnce() {
   // TODO(5411554): For now we check that initonce is called only once,
   // Once there is more formal mechanism to call InitOnce we can move
   // this check there.
   static bool init_once_called = false;
   ASSERT(init_once_called == false);
   init_once_called = true;
+
+  // Initialize the null page size.
+  null_page_size_ = static_cast<uword>(getpagesize());
 }
 
 
 void OS::Shutdown() {
 }
 
 
 void OS::Abort() {
   abort();
 }
 
 
 void OS::Exit(int code) {
   exit(code);
 }
 
 }  // namespace dart