text: #ifndef __ALT_SIM_H__
  #define __ALT_SIM_H__
  
  /******************************************************************************
  *                                                                             *
  * License Agreement                                                           *
  *                                                                             *
  * Copyright (c) 2007      Altera Corporation, San Jose, California, USA.      *
  * All rights reserved.                                                        *
  *                                                                             *
  * Permission is hereby granted, free of charge, to any person obtaining a     *
  * copy of this software and associated documentation files (the "Software"),  *
  * to deal in the Software without restriction, including without limitation   *
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,    *
  * and/or sell copies of the Software, and to permit persons to whom the       *
  * Software is furnished to do so, subject to the following conditions:        *
  *                                                                             *
  * The above copyright notice and this permission notice shall be included in  *
  * all copies or substantial portions of the Software.                         *
  *                                                                             *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *
  * DEALINGS IN THE SOFTWARE.                                                   *
  *                                                                             *
  * This agreement shall be governed in all respects by the laws of the State   *
  * of California and by the laws of the United States of America.              *
  *                                                                             *
  ******************************************************************************/
  #include "system.h"
  #include "alt_types.h"
  
  /*
   * Instructions that might mean something special to a simulator.
   * These have no special effect on real hardware (they are just nops).
   */
  #define ALT_SIM_FAIL() \
      do { __asm volatile ("cmpltui r0, r0, 0xabc1"); } while (0)
  
  #define ALT_SIM_PASS() \
      do { __asm volatile ("cmpltui r0, r0, 0xabc2"); } while (0)
  
  #define ALT_SIM_IN_TOP_OF_HOT_LOOP() \
      do { __asm volatile ("cmpltui r0, r0, 0xabc3"); } while (0)
  
  /*
   * Routine called on exit.
   */
  static ALT_ALWAYS_INLINE void alt_sim_halt(int exit_code)
  {
    int r2 = exit_code;
  
  #if defined(NIOS2_HAS_DEBUG_STUB) && (defined(ALT_BREAK_ON_EXIT) || defined(ALT_PROVIDE_GMON))
  
    int r3 = (1 << 2);
  
  #ifdef ALT_PROVIDE_GMON
    extern unsigned int alt_gmon_data[];
    int r4 = (int)alt_gmon_data;
    r3 |= (1 << 4);
  #define ALT_GMON_DATA ,"D04"(r4)
  #else
  #define ALT_GMON_DATA
  #endif /* ALT_PROVIDE_GMON */
  
    if (r2) {
      ALT_SIM_FAIL();
    } else {
      ALT_SIM_PASS();
    }
  
    __asm__ volatile ("\n0:\n\taddi %0,%0, -1\n\tbgt %0,zero,0b" : : "r" (ALT_CPU_FREQ/100) ); /* Delay for >30ms */
  
    __asm__ volatile ("break 2" : : "D02"(r2), "D03"(r3) ALT_GMON_DATA );
  
  #else /* !DEBUG_STUB */
    if (r2) {
      ALT_SIM_FAIL();
    } else {
      ALT_SIM_PASS();
    }
  #endif /* DEBUG_STUB */
  }
  
  #define ALT_SIM_HALT(exit_code) \
    alt_sim_halt(exit_code)
  
  #endif /* __ALT_SIM_H__ */
  