projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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. */ | |
| 1da177e4 LT |
35 | #include <linux/limits.h> |
| 36 | ||
| 37 | /* Maybe do sanity checking if file input. */ | |
| 38 | #undef SANITYCHECK_RELOC | |
| 39 | ||
| 40 | /* Maybe output debug messages. */ | |
| 41 | #undef RELOC_DEBUG | |
| 42 | ||
| 43 | /* Maybe we want to share core as well as disk space. | |
| 44 | Mainly depends on the config macro CONFIG_SHARE_SHLIB_CORE, but it is | |
| 45 | assumed that we want to share code when debugging (exposes more | |
| 46 | trouble). */ | |
| 47 | #ifndef SHARE_LIB_CORE | |
| 48 | # if (defined(__KERNEL__) || !defined(RELOC_DEBUG)) \ | |
| 49 | && !defined(CONFIG_SHARE_SHLIB_CORE) | |
| 50 | # define SHARE_LIB_CORE 0 | |
| 51 | # else | |
| 52 | # define SHARE_LIB_CORE 1 | |
| 53 | # endif /* __KERNEL__ etc */ | |
| 54 | #endif /* SHARE_LIB_CORE */ | |
| 55 | ||
| 56 | ||
| 57 | /* Main exported function; supposed to be called when the program a.out | |
| 58 | has been read in. */ | |
| 59 | extern int | |
| 60 | perform_cris_aout_relocations(unsigned long text, unsigned long tlength, | |
| 61 | unsigned long data, unsigned long dlength, | |
| 62 | unsigned long baddr, unsigned long blength, | |
| 63 | ||
| 64 | /* These may be zero when there's "perfect" | |
| 65 | position-independent code. */ | |
| 66 | unsigned char *trel, unsigned long tsrel, | |
| 67 | unsigned long dsrel, | |
| 68 | ||
| 69 | /* These will be zero at a first try, to see | |
| 70 | if code is statically linked. Else a | |
| 71 | second try, with the symbol table and | |
| 72 | string table nonzero should be done. */ | |
| 73 | unsigned char *symbols, unsigned long symlength, | |
| 74 | unsigned char *strings, unsigned long stringlength, | |
| 75 | ||
| 76 | /* These will only be used when symbol table | |
| 77 | information is present. */ | |
| 78 | char **env, int envc, | |
| 79 | int euid, int is_suid); | |
| 80 | ||
| 81 | ||
| 82 | #ifdef RELOC_DEBUG | |
| 83 | /* Task-specific debug stuff. */ | |
| 84 | struct task_reloc_debug { | |
| 85 | struct memdebug *alloclast; | |
| 86 | unsigned long alloc_total; | |
| 87 | unsigned long export_total; | |
| 88 | }; | |
| 89 | #endif /* RELOC_DEBUG */ | |
| 90 | ||
| 91 | #if SHARE_LIB_CORE | |
| 92 | ||
| 93 | /* When code (and some very specific data) is shared and not just | |
| 94 | dynamically linked, we need to export hooks for exec beginning and | |
| 95 | end. */ | |
| 96 | ||
| 97 | struct shlibdep; | |
| 98 | ||
| 99 | extern void | |
| 100 | shlibmod_exit(struct shlibdep **deps); | |
| 101 | ||
| 102 | /* Returns 0 if failure, nonzero for ok. */ | |
| 103 | extern int | |
| 104 | shlibmod_fork(struct shlibdep **deps); | |
| 105 | ||
| 106 | #else /* ! SHARE_LIB_CORE */ | |
| 107 | # define shlibmod_exit(x) | |
| 108 | # define shlibmod_fork(x) 1 | |
| 109 | #endif /* ! SHARE_LIB_CORE */ | |
| 110 | ||
| 111 | #endif _cris_relocate_h | |
| 112 | /********************** END OF FILE eshlibld.h *****************************/ | |
| 113 |