Commit | Line | Data |
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c906108c | 1 | /* Handle COFF SVR3 shared libraries for GDB, the GNU Debugger. |
b6ba6518 | 2 | Copyright 1993, 1994, 1998, 1999, 2000 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | ||
22 | #include "defs.h" | |
23 | ||
24 | #include "frame.h" | |
25 | #include "bfd.h" | |
26 | #include "gdbcore.h" | |
27 | #include "symtab.h" | |
399371f6 AC |
28 | #include "symfile.h" |
29 | #include "objfiles.h" | |
c906108c SS |
30 | |
31 | /* | |
32 | ||
c5aa993b | 33 | GLOBAL FUNCTION |
c906108c | 34 | |
c5aa993b JM |
35 | coff_solib_add -- add a shared library files to the symtab list. We |
36 | examine the `.lib' section of the exec file and determine the names of | |
37 | the shared libraries. | |
c906108c | 38 | |
c5aa993b JM |
39 | This function is responsible for discovering those names and |
40 | addresses, and saving sufficient information about them to allow | |
41 | their symbols to be read at a later time. | |
c906108c | 42 | |
c5aa993b | 43 | SYNOPSIS |
c906108c | 44 | |
c5aa993b JM |
45 | void coff_solib_add (char *arg_string, int from_tty, |
46 | struct target_ops *target) | |
c906108c | 47 | |
c5aa993b | 48 | DESCRIPTION |
c906108c | 49 | |
c5aa993b | 50 | */ |
c906108c SS |
51 | |
52 | void | |
fba45db2 | 53 | coff_solib_add (char *arg_string, int from_tty, struct target_ops *target) |
c5aa993b | 54 | { |
c906108c SS |
55 | asection *libsect; |
56 | ||
57 | libsect = bfd_get_section_by_name (exec_bfd, ".lib"); | |
58 | ||
59 | if (libsect) | |
60 | { | |
61 | int libsize; | |
62 | unsigned char *lib; | |
63 | struct libent | |
64 | { | |
65 | bfd_byte len[4]; | |
66 | bfd_byte nameoffset[4]; | |
67 | }; | |
68 | ||
69 | libsize = bfd_section_size (exec_bfd, libsect); | |
70 | ||
71 | lib = (unsigned char *) alloca (libsize); | |
72 | ||
73 | bfd_get_section_contents (exec_bfd, libsect, lib, 0, libsize); | |
74 | ||
75 | while (libsize > 0) | |
76 | { | |
77 | struct libent *ent; | |
78 | struct objfile *objfile; | |
79 | int len, nameoffset; | |
80 | char *filename; | |
81 | ||
c5aa993b | 82 | ent = (struct libent *) lib; |
c906108c SS |
83 | |
84 | len = bfd_get_32 (exec_bfd, ent->len); | |
85 | ||
86 | nameoffset = bfd_get_32 (exec_bfd, ent->nameoffset); | |
87 | ||
88 | if (len <= 0) | |
89 | break; | |
90 | ||
c5aa993b | 91 | filename = (char *) ent + nameoffset * 4; |
c906108c SS |
92 | |
93 | objfile = symbol_file_add (filename, from_tty, | |
2acceee2 | 94 | NULL, /* no offsets */ |
c5aa993b | 95 | 0, /* not mainline */ |
2df3850c | 96 | OBJF_SHARED); /* flags */ |
c906108c SS |
97 | |
98 | libsize -= len * 4; | |
99 | lib += len * 4; | |
100 | } | |
101 | ||
102 | /* Getting new symbols may change our opinion about what is | |
c5aa993b | 103 | frameless. */ |
c906108c SS |
104 | reinit_frame_cache (); |
105 | } | |
106 | } | |
107 | ||
108 | /* | |
c5aa993b JM |
109 | |
110 | GLOBAL FUNCTION | |
111 | ||
112 | coff_solib_create_inferior_hook -- shared library startup support | |
113 | ||
114 | SYNOPSIS | |
115 | ||
116 | void coff_solib_create_inferior_hook() | |
117 | ||
118 | DESCRIPTION | |
119 | ||
120 | When gdb starts up the inferior, the kernel maps in the shared | |
121 | libraries. We get here with the target stopped at it's first | |
122 | instruction, and the libraries already mapped. At this point, this | |
123 | function gets called via expansion of the macro | |
124 | SOLIB_CREATE_INFERIOR_HOOK. | |
125 | */ | |
126 | ||
127 | void | |
fba45db2 | 128 | coff_solib_create_inferior_hook (void) |
c906108c SS |
129 | { |
130 | coff_solib_add ((char *) 0, 0, (struct target_ops *) 0); | |
131 | } |