bsps/arm/lpc24xx/start/restart.c


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/**
 * @file
 *
 * @ingroup lpc24xx
 *
 * @brief Restart implementation.
 */

/*
 * Copyright (c) 2011-2014 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Dornierstr. 4
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.org/license/LICENSE.
 */

#include <rtems.h>

#include <bsp.h>

void bsp_restart(void *addr)
{
  #ifdef ARM_MULTILIB_ARCH_V4
    ARM_SWITCH_REGISTERS;
    rtems_interrupt_level level;

    rtems_interrupt_disable(level);
    (void) level;

    asm volatile (
      ARM_SWITCH_TO_ARM
      "mov pc, %[addr]\n"
      ARM_SWITCH_BACK
      : ARM_SWITCH_OUTPUT
      : [addr] "r" (addr)
    );
  #else
    rtems_interrupt_level level;
    void (*start)(void) = addr;

    rtems_interrupt_disable(level);
    (void) level;

    (*start)();
  #endif
}