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2933 | svoboda | 1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup rtld rtld |
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30 | * @brief |
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31 | * @{ |
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32 | */ |
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33 | /** |
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34 | * @file |
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35 | */ |
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36 | |||
2952 | svoboda | 37 | #include <stdio.h> |
38 | |||
2933 | svoboda | 39 | static void kputint(unsigned i) |
40 | { |
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41 | unsigned dummy; |
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42 | asm volatile ( |
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43 | "movl $30, %%eax;" |
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44 | "int $0x30" |
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45 | : "=d" (dummy) /* output - %edx clobbered */ |
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46 | : "d" (i) /* input */ |
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47 | : "%eax","%ecx" /* all scratch registers clobbered */ |
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2952 | svoboda | 48 | ); |
2933 | svoboda | 49 | } |
50 | |||
2952 | svoboda | 51 | int z = 42; |
52 | |||
2933 | svoboda | 53 | void test_func(void); |
54 | void test_func(void) |
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55 | { |
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2952 | svoboda | 56 | kputint(-1); |
57 | kputint(z); |
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58 | printf("Hello, world! (from rtld)\n"); |
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59 | getchar(); |
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60 | printf("x\n"); |
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61 | while(1); |
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62 | |||
2933 | svoboda | 63 | asm ( |
64 | "movl $253, %%eax;" |
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65 | "int $0x30" |
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66 | : /* output */ |
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67 | : /* input */ |
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68 | : "%eax","%ecx","%edx" /* all scratch registers clobbered */ |
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2952 | svoboda | 69 | ); |
2933 | svoboda | 70 | } |
71 | |||
72 | |||
73 | void _rtld_main(void) |
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74 | { |
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75 | kputint(-1); |
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76 | |||
77 | kputint(32); |
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78 | |||
79 | test_func(); |
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80 | |||
81 | kputint(46); |
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82 | } |
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83 | |||
84 | /** @} |
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85 | */ |