| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |