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| Rev | Author | Line No. | Line |
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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> |
| 2954 | svoboda | 38 | #include <unistd.h> |
| 39 | #include <fcntl.h> |
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| 2952 | svoboda | 40 | |
| 2933 | svoboda | 41 | static void kputint(unsigned i) |
| 42 | { |
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| 43 | unsigned dummy; |
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| 44 | asm volatile ( |
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| 45 | "movl $30, %%eax;" |
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| 46 | "int $0x30" |
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| 47 | : "=d" (dummy) /* output - %edx clobbered */ |
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| 48 | : "d" (i) /* input */ |
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| 49 | : "%eax","%ecx" /* all scratch registers clobbered */ |
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| 2952 | svoboda | 50 | ); |
| 2933 | svoboda | 51 | } |
| 52 | |||
| 2952 | svoboda | 53 | int z = 42; |
| 54 | |||
| 2954 | svoboda | 55 | void _putint(int i); |
| 56 | |||
| 2933 | svoboda | 57 | void test_func(void); |
| 58 | void test_func(void) |
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| 59 | { |
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| 2954 | svoboda | 60 | int fd, rc; |
| 61 | char buf[5]; |
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| 62 | |||
| 2952 | svoboda | 63 | kputint(-1); |
| 64 | kputint(z); |
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| 65 | printf("Hello, world! (from rtld)\n"); |
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| 2954 | svoboda | 66 | |
| 67 | fd = open("/test", O_RDONLY); |
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| 68 | if (fd < 0) { printf("fd<0 ("); _putint(fd); printf(")\n"); } |
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| 69 | fd = 0; |
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| 70 | |||
| 71 | rc = read(fd, &buf, 4); |
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| 72 | //printf(" ->%d\n", rc); |
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| 73 | buf[4]='\0'; |
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| 74 | printf(buf); |
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| 2952 | svoboda | 75 | getchar(); |
| 2954 | svoboda | 76 | |
| 2952 | svoboda | 77 | printf("x\n"); |
| 78 | while(1); |
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| 79 | |||
| 2933 | svoboda | 80 | asm ( |
| 81 | "movl $253, %%eax;" |
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| 82 | "int $0x30" |
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| 83 | : /* output */ |
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| 84 | : /* input */ |
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| 85 | : "%eax","%ecx","%edx" /* all scratch registers clobbered */ |
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| 2952 | svoboda | 86 | ); |
| 2933 | svoboda | 87 | } |
| 88 | |||
| 89 | |||
| 90 | void _rtld_main(void) |
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| 91 | { |
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| 92 | kputint(-1); |
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| 93 | |||
| 94 | kputint(32); |
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| 95 | |||
| 96 | test_func(); |
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| 97 | |||
| 98 | kputint(46); |
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| 99 | } |
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| 100 | |||
| 101 | /** @} |
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| 102 | */ |