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Last change
on this file since 282 was
282,
checked in by bouyer, 11 years ago
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Complete r281:
Keep BEV bit set in STATUS register, and add an exception handler at
0xbfc0380. This handler just prints STATUS, CAUSE and EPC register and
stalls (does an infinite loop).
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File size:
634 bytes
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| Line | |
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| 1 | /** |
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| 2 | * \file : exceptions.c |
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| 3 | * \date : December 2012 |
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| 4 | * \author : Manuel Bouyer |
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| 5 | * |
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| 6 | * This file defines a simple exeptions handler |
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| 7 | */ |
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| 8 | |
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| 9 | #include <boot_tty.h> |
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| 10 | |
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| 11 | #define in_reset __attribute__((section (".reset"))) |
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| 12 | #define in_reset_data __attribute__((section (".reset_data"))) |
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| 13 | |
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| 14 | in_reset void handle_exept(int status, int cause, int epc) |
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| 15 | { |
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| 16 | boot_puts("boot (default) exeption handler called: \r\n status "); |
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| 17 | boot_putx(status); |
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| 18 | boot_puts("\r\n cause "); |
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| 19 | boot_putx(cause); |
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| 20 | boot_puts(" (exeption "); |
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| 21 | boot_putx((cause >> 2) & 0x1f); |
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| 22 | boot_puts(")\r\n epc "); |
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| 23 | boot_putx(epc); |
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| 24 | boot_puts("\r\n"); |
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| 25 | while (1); |
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| 26 | } |
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