1# Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# Please email any bugs, comments, and/or additions to this file to:
17# bug-gdb@gnu.org
18
19# This file was written by Alexandre Oliva <aoliva@redhat.com>
20
21if $tracelevel then {
22	strace $tracelevel
23	}
24
25
26if { ![isnative] || [is_remote host] || [skip_shlib_tests]} {
27    return
28}
29
30if [get_compiler_info "ignored"] {
31    return -1
32}
33
34if {$gcc_compiled == 0} {
35    return -1
36}
37
38load_lib prelink-support.exp
39
40set testfile "prelink"
41
42set libsrcfile ${testfile}-lib.c
43set libfile ${objdir}/${subdir}/${testfile}.so
44
45# Use -soname so that the new library gets copied by build_executable_own_libs.
46
47if { [gdb_compile_shlib "${srcdir}/${subdir}/${libsrcfile}" "${libfile}" [list debug "ldflags=-Wl,-soname,[file tail ${libfile}]"]] != ""} {
48    # If creating the shared library fails, maybe we don't have the right tools
49    return -1
50}
51
52set srcfile ${testfile}.c
53set executable ${testfile}t
54set binfile ${objdir}/${subdir}/${executable}
55set prelink_args [build_executable_own_libs ${testfile}.exp $executable $srcfile [list debug "ldflags=-Wl,${libfile},-rpath,[file dirname ${libfile}]"]]
56if {$prelink_args == ""} {
57    return -1
58}
59
60set test "split debug of executable"
61if [gdb_gnu_strip_debug $binfile] {
62    fail $test
63} else {
64    pass $test
65}
66
67if ![prelink_yes $prelink_args] {
68    # Maybe we don't have prelink.
69    return -1
70}
71
72set found 0
73set coredir "${objdir}/${subdir}/coredir.[getpid]"
74file mkdir $coredir
75catch "system \"(cd ${coredir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""
76
77foreach i "${coredir}/core ${coredir}/core.coremaker.c ${binfile}.core" {
78    if [remote_file build exists $i] {
79	remote_exec build "mv $i ${objdir}/${subdir}/prelink.core"
80	set found 1
81    }
82}
83# Check for "core.PID".
84if { $found == 0 } {
85    set names [glob -nocomplain -directory $coredir core.*]
86    if {[llength $names] == 1} {
87        set corefile [file join $coredir [lindex $names 0]]
88        remote_exec build "mv $corefile ${objdir}/${subdir}/prelink.core"
89        set found 1
90    }
91}
92
93# Try to clean up after ourselves.
94remote_file build delete [file join $coredir coremmap.data]
95remote_exec build "rmdir $coredir"
96
97if { $found == 0  } {
98    warning "can't generate a core file - prelink tests suppressed - check ulimit -c"
99    return 0
100}
101
102# Relink $libfile to a different address.
103if ![prelink_yes $prelink_args] {
104    return -1
105}
106
107# Start with a fresh gdb
108
109clean_restart $executable
110
111# Print the "adjusting expectations" message.
112gdb_test_no_output "set verbose on"
113
114gdb_test "core-file $objdir/$subdir/prelink.core" "Using PIC \\(Position Independent Code\\) prelink displacement 0x\[^0\]\[0-9a-f\]* for \[^\r\n\]*[file tail ${libfile}].*" "seen displacement message"
115
116gdb_test "p &bssvar == bssvarp" " = 1" ".dynbss vs. .bss address shift"
117