1 | /* fatal.c |
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2 | * |
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3 | * User-define fatal error handler. |
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4 | * |
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5 | * Copyright (c) 1998, National Research Council of Canada |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.OARcorp.com/rtems/license.html. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <bsp.h> |
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15 | #include <fatal.h> |
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16 | |
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17 | /* |
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18 | * mystrcat |
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19 | * |
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20 | * Can't rely on libc being operational. So we provide our own strcat-like |
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21 | * function. |
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22 | * |
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23 | * Input parameters: |
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24 | * destination - string (buffer) to append to |
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25 | * source - string to append to the end of destination |
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26 | * |
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27 | * Output parameters: |
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28 | * destination - source is appended to the end |
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29 | * |
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30 | * Return values: |
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31 | * Number of characters appended. |
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32 | */ |
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33 | static int mystrcat( |
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34 | char *destination, |
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35 | const char *source |
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36 | ) |
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37 | { |
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38 | int i; |
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39 | |
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40 | for ( i = 0; ( *destination++ = *source++) != '\0'; i++ ); |
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41 | return i; |
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42 | } |
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43 | |
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44 | |
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45 | /* |
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46 | * bsp_fatal_error_occurred |
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47 | * |
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48 | * Called when rtems_fatal_error_occurred() is called. Returns control to |
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49 | * 167Bug. The _Internal_error_Occurred() function has already saved the |
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50 | * parameters in Internal_errors_What_happened. If the function returns, |
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51 | * RTEMS will halt the CPU. |
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52 | * |
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53 | * Make sure the CPU is |
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54 | * |
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55 | * Input parameters: |
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56 | * the_source - what subsystem the error originated in |
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57 | * is_internal - if the error was internally generated |
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58 | * the_error - fatal error status code |
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59 | * |
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60 | * Output parameters: |
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61 | * output to the 167Bug console |
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62 | * |
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63 | * Return values: NONE. |
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64 | */ |
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65 | User_extensions_routine bsp_fatal_error_occurred( |
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66 | Internal_errors_Source the_source, |
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67 | rtems_boolean is_internal, |
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68 | rtems_unsigned32 the_error |
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69 | ) |
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70 | { |
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71 | struct { |
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72 | char index; /* First byte is number of chars in strbuf */ |
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73 | char strbuf[254]; /* In case count is bumped up by one by 167Bug */ |
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74 | } my_p_str; |
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75 | |
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76 | my_p_str.index = 0; |
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77 | my_p_str.index += mystrcat( |
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78 | my_p_str.strbuf + my_p_str.index, |
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79 | "\r\nRTEMS Fatal Error Occurred:\r\n the_source = " ); |
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80 | |
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81 | switch ( the_source ) { |
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82 | case INTERNAL_ERROR_CORE: |
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83 | my_p_str.index += mystrcat( |
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84 | my_p_str.strbuf + my_p_str.index, |
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85 | "INTERNAL_ERROR_CORE\r\n is_internal = " ); |
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86 | break; |
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87 | |
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88 | case INTERNAL_ERROR_RTEMS_API: |
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89 | my_p_str.index += mystrcat( |
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90 | my_p_str.strbuf + my_p_str.index, |
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91 | "INTERNAL_ERROR_RTEMS_API\r\n is_internal = " ); |
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92 | break; |
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93 | |
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94 | case INTERNAL_ERROR_POSIX_API: |
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95 | my_p_str.index += mystrcat( |
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96 | my_p_str.strbuf + my_p_str.index, |
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97 | "INTERNAL_ERROR_POSIX_API\r\n is_internal = " ); |
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98 | break; |
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99 | |
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100 | default: |
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101 | my_p_str.index += mystrcat( |
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102 | my_p_str.strbuf + my_p_str.index, |
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103 | "UNKNOWN\r\n is_internal = " ); |
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104 | break; |
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105 | } |
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106 | |
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107 | if ( is_internal ) |
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108 | my_p_str.index += mystrcat( |
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109 | my_p_str.strbuf + my_p_str.index, |
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110 | "TRUE\r\n the_error = 0x|10,8|\r\n" ); |
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111 | else |
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112 | my_p_str.index += mystrcat( |
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113 | my_p_str.strbuf + my_p_str.index, |
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114 | "FALSE\r\n the_error = 0x|10,8|\r\n" ); |
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115 | |
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116 | lcsr->intr_ena = 0; /* disable interrupts */ |
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117 | m68k_set_vbr(0xFFE00000); /* restore 167Bug vectors */ |
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118 | |
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119 | asm volatile( "movel %0, -(%%a7)\n\t" |
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120 | "pea (%%a7)\n\t" |
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121 | "pea (%1)\n\t" |
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122 | "trap #15\n\t" /* trap to 167Bug (.WRITDLN) */ |
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123 | ".short 0x25\n\t" |
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124 | "trap #15\n\t" |
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125 | ".short 0x63" |
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126 | :: "d" (the_error), "a" (&my_p_str) ); |
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127 | } |
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