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1edae076 MV |
1 | /* dynl-dld.c - dynamic linking with dld |
2 | * | |
96599e6a | 3 | * Copyright (C) 1990-1997 Free Software Foundation, Inc. |
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4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2, or (at your option) | |
8 | * any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this software; see the file COPYING. If not, write to | |
17 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * As a special exception, the Free Software Foundation gives permission | |
20 | * for additional uses of the text contained in its release of GUILE. | |
21 | * | |
22 | * The exception is that, if you link the GUILE library with other files | |
23 | * to produce an executable, this does not by itself cause the | |
24 | * resulting executable to be covered by the GNU General Public License. | |
25 | * Your use of that executable is in no way restricted on account of | |
26 | * linking the GUILE library code into it. | |
27 | * | |
28 | * This exception does not however invalidate any other reasons why | |
29 | * the executable file might be covered by the GNU General Public License. | |
30 | * | |
31 | * This exception applies only to the code released by the | |
32 | * Free Software Foundation under the name GUILE. If you copy | |
33 | * code from other Free Software Foundation releases into a copy of | |
34 | * GUILE, as the General Public License permits, the exception does | |
35 | * not apply to the code that you add in this way. To avoid misleading | |
36 | * anyone as to the status of such modified files, you must delete | |
37 | * this exception notice from them. | |
38 | * | |
39 | * If you write modifications of your own for GUILE, it is your choice | |
40 | * whether to permit this exception to apply to your modifications. | |
41 | * If you do not wish that, delete this exception notice. | |
42 | */ | |
43 | ||
44 | /* "dynl.c" dynamically link&load object files. | |
45 | Author: Aubrey Jaffer | |
46 | Modified for libguile by Marius Vollmer */ | |
47 | ||
1edae076 MV |
48 | #include "dld.h" |
49 | ||
50 | static void listundef SCM_P ((void)); | |
51 | ||
52 | static void | |
53 | listundefs () | |
54 | { | |
55 | int i; | |
56 | char **undefs = dld_list_undefined_sym(); | |
57 | puts(" undefs:"); | |
58 | for(i = dld_undefined_sym_count;i--;) { | |
59 | putc('"', stdout); | |
60 | fputs(undefs[i], stdout); | |
61 | puts("\""); | |
62 | } | |
63 | free(undefs); | |
64 | } | |
65 | ||
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66 | static void * |
67 | sysdep_dynl_link (fname, subr) | |
68 | char *fname; | |
69 | char *subr; | |
70 | { | |
71 | int status; | |
1edae076 | 72 | |
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73 | status = dld_link (fname); |
74 | if (status) | |
75 | scm_misc_error (subr, dld_strerror (status), SCM_EOL); | |
76 | return fname; | |
77 | } | |
78 | ||
79 | static void | |
80 | sysdep_dynl_unlink (handle, subr) | |
81 | void *handle; | |
82 | char *subr; | |
1edae076 MV |
83 | { |
84 | int status; | |
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85 | |
86 | SCM_DEFER_INTS; | |
80bc7890 | 87 | status = dld_unlink_by_file ((char *)fname, 1); |
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88 | SCM_ALLOW_INTS; |
89 | if (status) | |
80bc7890 | 90 | scm_misc_error (s_dynamic_unlink, dld_strerror (status), SCM_EOL); |
1edae076 MV |
91 | } |
92 | ||
1edae076 | 93 | static void * |
80bc7890 MV |
94 | sysdep_dynl_func (symb, handle, subr) |
95 | char *symb; | |
96 | void *handle; | |
1edae076 | 97 | char *subr; |
1edae076 MV |
98 | { |
99 | void *func; | |
100 | ||
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101 | SCM_DEFER_INTS; |
102 | func = (void *) dld_get_func (func); | |
103 | if (func == 0) | |
104 | scm_misc_error (subr, dld_strerror (dld_errno), SCM_EOL); | |
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105 | if (!dld_function_executable_p (func)) { |
106 | listundefs (); | |
107 | scm_misc_error (subr, "unresolved symbols remain", SCM_EOL); | |
108 | } | |
1edae076 | 109 | SCM_ALLOW_INTS; |
80bc7890 | 110 | return func; |
1edae076 MV |
111 | } |
112 | ||
80bc7890 MV |
113 | static void |
114 | sysdep_dynl_init () | |
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115 | { |
116 | #ifndef RTL | |
117 | if (!execpath) | |
118 | execpath = dld_find_executable (SCM_CHARS (SCM_CAR (progargs))); | |
119 | if (dld_init (SCM_CHARS (SCM_CAR (progargs)))) { | |
120 | dld_perror("DLD"); | |
121 | return; | |
122 | } | |
123 | #endif | |
124 | ||
1edae076 MV |
125 | #ifdef DLD_DYNCM /* XXX - what's this? */ |
126 | add_feature("dld:dyncm"); | |
127 | #endif | |
128 | } |