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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <func.h>
  30. #include <print.h>
  31. #include <cpu.h>
  32. #include <arch/asm.h>
  33. #include <arch.h>
  34.  
  35. __u32   haltstate = 0; /**< Halt flag */
  36.  
  37.  
  38. /** Halt wrapper
  39.  *
  40.  * Set halt flag and halt the cpu.
  41.  *
  42.  */
  43. void halt(void)
  44. {
  45.     haltstate = 1;
  46.     cpu_priority_high();
  47.     printf("cpu%d: halted\n", CPU->id);
  48.     cpu_halt();
  49. }
  50.  
  51.  
  52. /** Compare two NULL terminated strings
  53.  *
  54.  * Do a char-by-char comparment of two NULL terminated strings.
  55.  * The strings are considered equal iff they have the same
  56.  * length and consist of the same characters.
  57.  *
  58.  * @param src First string to compare.
  59.  * @param dst Second string to compare.
  60.  *
  61.  * @return 0 if the strings are equal, 1 otherwise.
  62.  *
  63.  */
  64. int strcmp(const char *src, const char *dst)
  65. {
  66.     int i;
  67.    
  68.     i = 0;
  69.     while (src[i] == dst[i]) {
  70.         if (src[i] == '\0')
  71.             return 0;
  72.         i++;
  73.     }
  74.     return 1;
  75. }
  76.