1#   Copyright 2006, 2007, 2008, 2009, 2010, 2011
2#   Free Software Foundation, Inc.
3
4# This program is free software; you can redistribute it and/or modify
5# it under the terms of the GNU General Public License as published by
6# the Free Software Foundation; either version 3 of the License, or
7# (at your option) any later version.
8#
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12# GNU General Public License for more details.
13#
14# You should have received a copy of the GNU General Public License
15# along with this program.  If not, see <http://www.gnu.org/licenses/>.
16
17# Test setting breakpoints on shared library functions provided by more
18# than one shared library, when one of the implementations is a "weak"
19# symbol.  GDB should set a breakpoint at the first copy it finds.
20
21if {[skip_shlib_tests]} {
22    return 0
23}
24
25# These targets have shared libraries, but weak symbols are not meaningful.
26if {([istarget arm*-*-symbianelf*]
27     || [istarget *-*-mingw*]
28     || [istarget *-*-cygwin*]
29     || [istarget *-*-pe*])} {
30    return 0
31}
32
33# This test uses GCC-specific syntax.
34if [get_compiler_info not-used] {
35    return -1
36}
37
38if {![test_compiler_info "gcc-*"]} {
39    return 0
40}
41
42proc do_test { lib1opts lib2opts lib1first } {
43    global objdir srcdir subdir
44
45    set testfile "solib-weak"
46    set srcfile ${testfile}.c
47
48    set libfile1 "weaklib1"
49    set libfile2 "weaklib2"
50    set lib1src ${srcdir}/${subdir}/${libfile1}.c
51    set lib2src ${srcdir}/${subdir}/${libfile2}.c
52
53    # Select a unique name for this test.  Give each library and
54    # executable a name reflecting its options, so that file caching
55    # on the target system does not pick up the wrong file.
56    set testopts ""
57    if {$lib1opts == ""} {
58	append testopts "lib1 nodebug, "
59    } else {
60	append testopts "lib1 debug, "
61	append lib1 "-dbg"
62    }
63    if {$lib2opts == ""} {
64	append testopts "lib2 nodebug, "
65    } else {
66	append testopts "lib2 debug, "
67	append lib2 "-dbg"
68    }
69    if {$lib1first} {
70	append testopts "lib1 first"
71    } else {
72	append testopts "lib2 first"
73	append testfile "-lib2"
74    }
75
76    set binfile ${objdir}/${subdir}/${testfile}
77    set lib1 ${objdir}/${subdir}/${libfile1}.sl
78    set lib2 ${objdir}/${subdir}/${libfile2}.sl
79
80    if $lib1first {
81	set exec_opts [list debug shlib=${lib1} shlib=${lib2}]
82	set expected_file ${libfile1}
83    } else {
84	set exec_opts [list debug shlib=${lib2} shlib=${lib1}]
85	set expected_file ${libfile2}
86    }
87
88    if { [gdb_compile_shlib ${lib1src} ${lib1} ${lib1opts}] != ""
89	 || [gdb_compile_shlib ${lib2src} ${lib2} ${lib2opts}] != ""
90	 || [gdb_compile "${srcdir}/${subdir}/${srcfile}" ${binfile} executable $exec_opts] != ""} {
91	return -1
92    }
93
94    gdb_exit
95    gdb_start
96    gdb_reinitialize_dir $srcdir/$subdir
97    gdb_load ${binfile}
98    gdb_load_shlibs $lib1 $lib2
99
100    runto_main
101
102    gdb_breakpoint "bar"
103
104    # If the library which will be used is compiled without debugging
105    # information, GDB will pick the wrong copy of "bar", i.e. the one
106    # with debugging information.
107
108    if {(${lib1opts} == "" && ${lib2opts} != "" && ${lib1first} == 1)
109	|| (${lib1opts} != "" && ${lib2opts} == "" && ${lib1first} == 0)} {
110	setup_kfail gdb/1824 *-*-*
111    }
112
113    gdb_test "continue" "Breakpoint .* \\.?bar .*${expected_file}\\..*" \
114	"run to breakpoint - $testopts"
115}
116
117foreach lib1opts {{} {debug}} {
118    foreach lib2opts {{} {debug}} {
119	foreach lib1first {1 0} {
120	    do_test $lib1opts $lib2opts $lib1first
121	}
122    }
123}
124