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1/* SPDX-License-Identifier: GPL-2.0 */
2/*!**************************************************************************
3*!
4*! FILE NAME : eshlibld.h
5*!
6*! DESCRIPTION: Prototypes for exported shared library functions
7*!
8*! FUNCTIONS : perform_cris_aout_relocations, shlibmod_fork, shlibmod_exit
9*! (EXPORTED)
10*!
11*!---------------------------------------------------------------------------
12*!
13*! (C) Copyright 1998, 1999 Axis Communications AB, LUND, SWEDEN
14*!
15*!**************************************************************************/
16/* $Id: eshlibld.h,v 1.2 2001/02/23 13:47:33 bjornw Exp $ */
17
18#ifndef _cris_relocate_h
19#define _cris_relocate_h
20
21/* Please note that this file is also compiled into the xsim simulator.
22 Try to avoid breaking its double use (only works on a little-endian
23 32-bit machine such as the i386 anyway).
24
25 Use __KERNEL__ when you're about to use kernel functions,
26 (which you should not do here anyway, since this file is
27 used by glibc).
28 Use defined(__KERNEL__) || defined(__elinux__) when doing
29 things that only makes sense on an elinux system.
30 Use __CRIS__ when you're about to do (really) CRIS-specific code.
31*/
32
33/* We have dependencies all over the place for the host system
34 for xsim being a linux system, so let's not pretend anything
35 else with #ifdef:s here until fixed. */
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# 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. */
59extern int
60perform_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. */
84struct 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
97struct shlibdep;
98
99extern void
100shlibmod_exit(struct shlibdep **deps);
101
102/* Returns 0 if failure, nonzero for ok. */
103extern int
104shlibmod_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