[6335022e] | 1 | /* |
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| 2 | * Internal Error Handler |
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| 3 | * |
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[03f2154e] | 4 | * COPYRIGHT (c) 1989-1997. |
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[6335022e] | 5 | * On-Line Applications Research Corporation (OAR). |
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[03f2154e] | 6 | * Copyright assigned to U.S. Government, 1994. |
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[6335022e] | 7 | * |
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[03f2154e] | 8 | * The license and distribution terms for this file may in |
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| 9 | * the file LICENSE in this distribution or at |
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| 10 | * http://www.OARcorp.com/rtems/license.html. |
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[6335022e] | 11 | * |
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| 12 | * $Id$ |
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| 13 | */ |
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| 14 | |
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| 15 | #include <rtems/system.h> |
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| 16 | #include <rtems/score/interr.h> |
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| 17 | #include <rtems/score/sysstate.h> |
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| 18 | #include <rtems/score/userext.h> |
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| 19 | |
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| 20 | /*PAGE |
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| 21 | * |
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| 22 | * _Internal_error_Occurred |
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| 23 | * |
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| 24 | * This routine will invoke the fatal error handler supplied by the user |
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| 25 | * followed by the the default one provided by the executive. The default |
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| 26 | * error handler assumes no hardware is present to help inform the user |
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| 27 | * of the problem. Halt stores the error code in a known register, |
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| 28 | * disables interrupts, and halts the CPU. If the CPU does not have a |
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| 29 | * halt instruction, it will loop to itself. |
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| 30 | * |
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| 31 | * Input parameters: |
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| 32 | * the_source - what subsystem the error originated in |
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| 33 | * is_internal - if the error was internally generated |
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| 34 | * the_error - fatal error status code |
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| 35 | * |
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| 36 | * Output parameters: |
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| 37 | * As much information as possible is stored in a CPU dependent fashion. |
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| 38 | * See the CPU dependent code for more information. |
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| 39 | * |
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| 40 | * NOTE: The the_error is not necessarily a directive status code. |
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| 41 | */ |
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| 42 | |
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| 43 | /* |
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| 44 | * Ugly hack.... _CPU_Fatal_halt() disonnects the bdm. Without this |
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| 45 | * change, the_error is only known only to the cpu :). |
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| 46 | * |
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| 47 | * From "bsp.h" which is not yet available in the arch tree during |
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| 48 | * this phase of install. jsg |
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| 49 | */ |
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| 50 | void outbyte(char); |
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| 51 | void bsp_cleanup( void ); |
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| 52 | |
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| 53 | #define RAW_PUTS(str) \ |
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| 54 | { register char *ptr = str; \ |
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| 55 | while (*ptr) outbyte(*ptr++); \ |
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| 56 | } |
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| 57 | |
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| 58 | #define RAW_PUTI(n) { \ |
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| 59 | register int i, j; \ |
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| 60 | \ |
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| 61 | RAW_PUTS("0x"); \ |
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| 62 | for (i=28;i>=0;i -= 4) { \ |
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| 63 | j = (n>>i) & 0xf; \ |
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| 64 | outbyte( (j>9 ? j-10+'a' : j+'0') ); \ |
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| 65 | } \ |
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| 66 | } |
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| 67 | |
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| 68 | void volatile _Internal_error_Occurred( |
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| 69 | Internal_errors_Source the_source, |
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| 70 | boolean is_internal, |
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| 71 | unsigned32 the_error |
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| 72 | ) |
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| 73 | { |
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| 74 | |
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| 75 | Internal_errors_What_happened.the_source = the_source; |
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| 76 | Internal_errors_What_happened.is_internal = is_internal; |
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| 77 | Internal_errors_What_happened.the_error = the_error; |
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| 78 | |
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| 79 | _User_extensions_Fatal( the_source, is_internal, the_error ); |
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| 80 | |
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| 81 | _System_state_Set( SYSTEM_STATE_FAILED ); |
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| 82 | |
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| 83 | /* try to print error message to outbyte */ |
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| 84 | RAW_PUTS("\r\nRTEMS: A fatal error has occured.\r\n"); |
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| 85 | RAW_PUTS("RTEMS: fatal error "); |
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| 86 | RAW_PUTI( the_error ); |
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| 87 | RAW_PUTS(".\r\n"); |
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| 88 | |
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| 89 | /* configure peripherals for a safe exit */ |
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| 90 | bsp_cleanup(); |
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| 91 | |
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| 92 | _CPU_Fatal_halt( the_error ); |
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| 93 | |
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| 94 | /* will not return from this routine */ |
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| 95 | } |
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