LXR linux-bk/include/asm-cris/eshlibld.h

   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. */
  60extern int
  61perform_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. */
  85struct 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
  98struct shlibdep;
  99
 100extern void
 101shlibmod_exit(struct shlibdep **deps);
 102
 103/* Returns 0 if failure, nonzero for ok. */
 104extern int
 105shlibmod_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
 115