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1 | /*!************************************************************************** |
2 | *! | |
3 | *! FILE NAME : eshlibld.h | |
4 | *! | |
5 | *! DESCRIPTION: Prototypes for exported shared library functions | |
6 | *! | |
7 | *! FUNCTIONS : perform_cris_aout_relocations, shlibmod_fork, shlibmod_exit | |
8 | *! (EXPORTED) | |
9 | *! | |
10 | *!--------------------------------------------------------------------------- | |
11 | *! | |
12 | *! (C) Copyright 1998, 1999 Axis Communications AB, LUND, SWEDEN | |
13 | *! | |
14 | *!**************************************************************************/ | |
15 | /* $Id: eshlibld.h,v 1.2 2001/02/23 13:47:33 bjornw Exp $ */ | |
16 | ||
17 | #ifndef _cris_relocate_h | |
18 | #define _cris_relocate_h | |
19 | ||
20 | /* Please note that this file is also compiled into the xsim simulator. | |
21 | Try to avoid breaking its double use (only works on a little-endian | |
22 | 32-bit machine such as the i386 anyway). | |
23 | ||
24 | Use __KERNEL__ when you're about to use kernel functions, | |
25 | (which you should not do here anyway, since this file is | |
26 | used by glibc). | |
27 | Use defined(__KERNEL__) || defined(__elinux__) when doing | |
28 | things that only makes sense on an elinux system. | |
29 | Use __CRIS__ when you're about to do (really) CRIS-specific code. | |
30 | */ | |
31 | ||
32 | /* We have dependencies all over the place for the host system | |
33 | for xsim being a linux system, so let's not pretend anything | |
34 | else with #ifdef:s here until fixed. */ | |
35 | #include <linux/config.h> | |
36 | #include <linux/limits.h> | |
37 | ||
38 | /* Maybe do sanity checking if file input. */ | |
39 | #undef SANITYCHECK_RELOC | |
40 | ||
41 | /* Maybe output debug messages. */ | |
42 | #undef RELOC_DEBUG | |
43 | ||
44 | /* Maybe we want to share core as well as disk space. | |
45 | Mainly depends on the config macro CONFIG_SHARE_SHLIB_CORE, but it is | |
46 | assumed that we want to share code when debugging (exposes more | |
47 | trouble). */ | |
48 | #ifndef SHARE_LIB_CORE | |
49 | # if (defined(__KERNEL__) || !defined(RELOC_DEBUG)) \ | |
50 | && !defined(CONFIG_SHARE_SHLIB_CORE) | |
51 | # define SHARE_LIB_CORE 0 | |
52 | # else | |
53 | # define SHARE_LIB_CORE 1 | |
54 | # endif /* __KERNEL__ etc */ | |
55 | #endif /* SHARE_LIB_CORE */ | |
56 | ||
57 | ||
58 | /* Main exported function; supposed to be called when the program a.out | |
59 | has been read in. */ | |
60 | extern int | |
61 | perform_cris_aout_relocations(unsigned long text, unsigned long tlength, | |
62 | unsigned long data, unsigned long dlength, | |
63 | unsigned long baddr, unsigned long blength, | |
64 | ||
65 | /* These may be zero when there's "perfect" | |
66 | position-independent code. */ | |
67 | unsigned char *trel, unsigned long tsrel, | |
68 | unsigned long dsrel, | |
69 | ||
70 | /* These will be zero at a first try, to see | |
71 | if code is statically linked. Else a | |
72 | second try, with the symbol table and | |
73 | string table nonzero should be done. */ | |
74 | unsigned char *symbols, unsigned long symlength, | |
75 | unsigned char *strings, unsigned long stringlength, | |
76 | ||
77 | /* These will only be used when symbol table | |
78 | information is present. */ | |
79 | char **env, int envc, | |
80 | int euid, int is_suid); | |
81 | ||
82 | ||
83 | #ifdef RELOC_DEBUG | |
84 | /* Task-specific debug stuff. */ | |
85 | struct task_reloc_debug { | |
86 | struct memdebug *alloclast; | |
87 | unsigned long alloc_total; | |
88 | unsigned long export_total; | |
89 | }; | |
90 | #endif /* RELOC_DEBUG */ | |
91 | ||
92 | #if SHARE_LIB_CORE | |
93 | ||
94 | /* When code (and some very specific data) is shared and not just | |
95 | dynamically linked, we need to export hooks for exec beginning and | |
96 | end. */ | |
97 | ||
98 | struct shlibdep; | |
99 | ||
100 | extern void | |
101 | shlibmod_exit(struct shlibdep **deps); | |
102 | ||
103 | /* Returns 0 if failure, nonzero for ok. */ | |
104 | extern int | |
105 | shlibmod_fork(struct shlibdep **deps); | |
106 | ||
107 | #else /* ! SHARE_LIB_CORE */ | |
108 | # define shlibmod_exit(x) | |
109 | # define shlibmod_fork(x) 1 | |
110 | #endif /* ! SHARE_LIB_CORE */ | |
111 | ||
112 | #endif _cris_relocate_h | |
113 | /********************** END OF FILE eshlibld.h *****************************/ | |
114 |