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/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#  define SHARE_LIB_CORE 0
50# else
51#  define SHARE_LIB_CORE 1
52# endif /* __KERNEL__ etc */
53#endif /* SHARE_LIB_CORE */
54
55
56/* Main exported function; supposed to be called when the program a.out
57   has been read in. */
58extern int
59perform_cris_aout_relocations(unsigned long text, unsigned long tlength,
60			      unsigned long data, unsigned long dlength,
61			      unsigned long baddr, unsigned long blength,
62
63			      /* These may be zero when there's "perfect"
64				 position-independent code. */
65			      unsigned char *trel, unsigned long tsrel,
66			      unsigned long dsrel,
67
68			      /* These will be zero at a first try, to see
69				 if code is statically linked.  Else a
70				 second try, with the symbol table and
71				 string table nonzero should be done. */
72			      unsigned char *symbols, unsigned long symlength,
73			      unsigned char *strings, unsigned long stringlength,
74
75			      /* These will only be used when symbol table
76			       information is present. */
77			      char **env, int envc,
78			      int euid, int is_suid);
79
80
81#ifdef RELOC_DEBUG
82/* Task-specific debug stuff. */
83struct task_reloc_debug {
84	struct memdebug *alloclast;
85	unsigned long alloc_total;
86	unsigned long export_total;
87};
88#endif /* RELOC_DEBUG */
89
90#if SHARE_LIB_CORE
91
92/* When code (and some very specific data) is shared and not just
93   dynamically linked, we need to export hooks for exec beginning and
94   end. */
95
96struct shlibdep;
97
98extern void
99shlibmod_exit(struct shlibdep **deps);
100
101/* Returns 0 if failure, nonzero for ok. */
102extern int
103shlibmod_fork(struct shlibdep **deps);
104
105#else  /* ! SHARE_LIB_CORE */
106# define shlibmod_exit(x)
107# define shlibmod_fork(x) 1
108#endif /* ! SHARE_LIB_CORE */
109
110#endif _cris_relocate_h
111/********************** END OF FILE eshlibld.h *****************************/
112
113