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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
2 | * Copyright (c) 2008 Jiri Svoboda |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup rtld rtld |
29 | /** @addtogroup rtld rtld |
30 | * @brief |
30 | * @brief |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | */ |
35 | */ |
36 | 36 | ||
- | 37 | #include <stdio.h> |
|
- | 38 | ||
37 | static void kputint(unsigned i) |
39 | static void kputint(unsigned i) |
38 | { |
40 | { |
39 | unsigned dummy; |
41 | unsigned dummy; |
40 | asm volatile ( |
42 | asm volatile ( |
41 | "movl $30, %%eax;" |
43 | "movl $30, %%eax;" |
42 | "int $0x30" |
44 | "int $0x30" |
43 | : "=d" (dummy) /* output - %edx clobbered */ |
45 | : "=d" (dummy) /* output - %edx clobbered */ |
44 | : "d" (i) /* input */ |
46 | : "d" (i) /* input */ |
45 | : "%eax","%ecx" /* all scratch registers clobbered */ |
47 | : "%eax","%ecx" /* all scratch registers clobbered */ |
46 | ); |
48 | ); |
47 | } |
49 | } |
48 | 50 | ||
- | 51 | int z = 42; |
|
- | 52 | ||
49 | void test_func(void); |
53 | void test_func(void); |
50 | void test_func(void) |
54 | void test_func(void) |
51 | { |
55 | { |
- | 56 | kputint(-1); |
|
- | 57 | kputint(z); |
|
- | 58 | printf("Hello, world! (from rtld)\n"); |
|
- | 59 | getchar(); |
|
- | 60 | printf("x\n"); |
|
- | 61 | while(1); |
|
- | 62 | ||
52 | asm ( |
63 | asm ( |
53 | "movl $253, %%eax;" |
64 | "movl $253, %%eax;" |
54 | "int $0x30" |
65 | "int $0x30" |
55 | : /* output */ |
66 | : /* output */ |
56 | : /* input */ |
67 | : /* input */ |
57 | : "%eax","%ecx","%edx" /* all scratch registers clobbered */ |
68 | : "%eax","%ecx","%edx" /* all scratch registers clobbered */ |
58 | ); |
69 | ); |
59 | } |
70 | } |
60 | 71 | ||
61 | 72 | ||
62 | void _rtld_main(void) |
73 | void _rtld_main(void) |
63 | { |
74 | { |
64 | kputint(-1); |
75 | kputint(-1); |
65 | 76 | ||
66 | kputint(32); |
77 | kputint(32); |
67 | 78 | ||
68 | test_func(); |
79 | test_func(); |
69 | 80 | ||
70 | kputint(46); |
81 | kputint(46); |
71 | } |
82 | } |
72 | 83 | ||
73 | /** @} |
84 | /** @} |
74 | */ |
85 | */ |
75 | 86 |