Commit | Line | Data |
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c906108c | 1 | /* Handle COFF SVR3 shared libraries for GDB, the GNU Debugger. |
6aba47ca DJ |
2 | Copyright (C) 1993, 1994, 1998, 1999, 2000, 2007 |
3 | Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
21 | |
22 | ||
23 | #include "defs.h" | |
24 | ||
25 | #include "frame.h" | |
26 | #include "bfd.h" | |
27 | #include "gdbcore.h" | |
28 | #include "symtab.h" | |
399371f6 AC |
29 | #include "symfile.h" |
30 | #include "objfiles.h" | |
c906108c SS |
31 | |
32 | /* | |
33 | ||
c5aa993b | 34 | GLOBAL FUNCTION |
c906108c | 35 | |
c5aa993b JM |
36 | coff_solib_add -- add a shared library files to the symtab list. We |
37 | examine the `.lib' section of the exec file and determine the names of | |
38 | the shared libraries. | |
c906108c | 39 | |
c5aa993b JM |
40 | This function is responsible for discovering those names and |
41 | addresses, and saving sufficient information about them to allow | |
42 | their symbols to be read at a later time. | |
c906108c | 43 | |
c5aa993b | 44 | SYNOPSIS |
c906108c | 45 | |
c5aa993b | 46 | void coff_solib_add (char *arg_string, int from_tty, |
990f9fe3 | 47 | struct target_ops *target, int readsyms) |
c906108c | 48 | |
c5aa993b | 49 | DESCRIPTION |
c906108c | 50 | |
c5aa993b | 51 | */ |
c906108c SS |
52 | |
53 | void | |
990f9fe3 | 54 | coff_solib_add (char *arg_string, int from_tty, struct target_ops *target, int readsyms) |
c5aa993b | 55 | { |
c906108c SS |
56 | asection *libsect; |
57 | ||
990f9fe3 FF |
58 | if (!readsyms) |
59 | return; | |
60 | ||
c906108c SS |
61 | libsect = bfd_get_section_by_name (exec_bfd, ".lib"); |
62 | ||
63 | if (libsect) | |
64 | { | |
65 | int libsize; | |
66 | unsigned char *lib; | |
67 | struct libent | |
68 | { | |
69 | bfd_byte len[4]; | |
70 | bfd_byte nameoffset[4]; | |
71 | }; | |
72 | ||
73 | libsize = bfd_section_size (exec_bfd, libsect); | |
74 | ||
75 | lib = (unsigned char *) alloca (libsize); | |
76 | ||
77 | bfd_get_section_contents (exec_bfd, libsect, lib, 0, libsize); | |
78 | ||
79 | while (libsize > 0) | |
80 | { | |
81 | struct libent *ent; | |
82 | struct objfile *objfile; | |
83 | int len, nameoffset; | |
84 | char *filename; | |
85 | ||
c5aa993b | 86 | ent = (struct libent *) lib; |
c906108c SS |
87 | |
88 | len = bfd_get_32 (exec_bfd, ent->len); | |
89 | ||
90 | nameoffset = bfd_get_32 (exec_bfd, ent->nameoffset); | |
91 | ||
92 | if (len <= 0) | |
93 | break; | |
94 | ||
c5aa993b | 95 | filename = (char *) ent + nameoffset * 4; |
c906108c SS |
96 | |
97 | objfile = symbol_file_add (filename, from_tty, | |
2acceee2 | 98 | NULL, /* no offsets */ |
c5aa993b | 99 | 0, /* not mainline */ |
2df3850c | 100 | OBJF_SHARED); /* flags */ |
c906108c SS |
101 | |
102 | libsize -= len * 4; | |
103 | lib += len * 4; | |
104 | } | |
105 | ||
106 | /* Getting new symbols may change our opinion about what is | |
c5aa993b | 107 | frameless. */ |
c906108c SS |
108 | reinit_frame_cache (); |
109 | } | |
110 | } | |
111 | ||
112 | /* | |
c5aa993b JM |
113 | |
114 | GLOBAL FUNCTION | |
115 | ||
116 | coff_solib_create_inferior_hook -- shared library startup support | |
117 | ||
118 | SYNOPSIS | |
119 | ||
9b5c5aad | 120 | void coff_solib_create_inferior_hook () |
c5aa993b JM |
121 | |
122 | DESCRIPTION | |
123 | ||
124 | When gdb starts up the inferior, the kernel maps in the shared | |
125 | libraries. We get here with the target stopped at it's first | |
126 | instruction, and the libraries already mapped. At this point, this | |
127 | function gets called via expansion of the macro | |
128 | SOLIB_CREATE_INFERIOR_HOOK. | |
129 | */ | |
130 | ||
131 | void | |
fba45db2 | 132 | coff_solib_create_inferior_hook (void) |
c906108c | 133 | { |
990f9fe3 | 134 | coff_solib_add ((char *) 0, 0, (struct target_ops *) 0, auto_solib_add); |
c906108c | 135 | } |