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-/*
-    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
-
-    This file is part of ChibiOS/RT.
-
-    ChibiOS/RT is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    ChibiOS/RT 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 this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @page article_saveram Saving RAM by declaring thread functions "noreturn"
- * One of the problems, when writing embedded multi-threaded applications,
- * is that the thread functions do save the registers in the function
- * entry code even if the system does not require it, exiting such
- * a function would terminate the thread so there is no need to preserve
- * the register values. This can waste tens of bytes for each thread.<br>
- * Consider the following code: 
- * @code
-#include <ch.h>
-
-static WORKING_AREA(waMyThread, 64);
-
-static t_msg MyThread(void *arg) {
-  while (!chThdShoudTerminate()) {
-    /* Do thread inner work */
-  }
-  return 1;
-}
-
-main() {
-  chSysInit();
-  ...
-  chThdCreateStatic(waMyThread, sizeof(waMyThread), NORMALPRIO, MyThread, NULL);
-  ...
-}
- * @endcode
- * The resulting ASM code for the thread function would be something like this:
- * @code
-MyThread:
-        stmfd   sp!, {r4, r5, r6, lr}
-        ...
-        ldmfd   sp!, {r4, r5, r6, pc}
- * @endcode
- * Being that function a thread there is no need to save those registers, in
- * embedded applications often the RAM is a scarce resource. That space can be
- * saved by modifying the code as follow, using some advanced GCC extensions: 
- * @code
-#include <ch.h>
-
-static WORKING_AREA(waMyThread, 64);
-
-__attribute__((noreturn))
-static void MyThread(void *arg) {
-  while (!chThdShoudTerminate()) {
-    /* Do thread inner work */
-  }
-  chThdExit(1);
-}
-
-main() {
-  chSysInit();
-  ...
-  chThdCreateStatic(waMyThread, sizeof(waMyThread), NORMALPRIO,
-                    (tfunc_t)MyThread, NULL);
-  ...
-}
- * @endcode
- * This will make GCC believe that the function cannot return and there is no
- * need to save registers. The code will be a bit less readable and less
- * portable on other compilers however.
- */