1# Copyright 2006-2020 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
21
22if { ![isnative] || [is_remote host] || [skip_shlib_tests]} {
23    return
24}
25
26if [get_compiler_info] {
27    return -1
28}
29
30if {$gcc_compiled == 0} {
31    return -1
32}
33
34load_lib prelink-support.exp
35
36set testfile "prelink"
37
38set libsrcfile ${testfile}-lib.c
39set libfile [standard_output_file ${testfile}.so]
40
41# Use -soname so that the new library gets copied by build_executable_own_libs.
42
43if { [gdb_compile_shlib "${srcdir}/${subdir}/${libsrcfile}" "${libfile}" [list debug "ldflags=-Wl,-soname,[file tail ${libfile}]"]] != ""} {
44    # If creating the shared library fails, maybe we don't have the right tools
45    return -1
46}
47
48set srcfile ${testfile}.c
49set executable ${testfile}t
50set binfile [standard_output_file ${executable}]
51set prelink_args [build_executable_own_libs ${testfile}.exp $executable $srcfile [list debug "ldflags=-Wl,${libfile},-rpath,[file dirname ${libfile}]"]]
52if {$prelink_args == ""} {
53    return -1
54}
55
56set test "split debug of executable"
57if [gdb_gnu_strip_debug $binfile] {
58    fail $test
59} else {
60    pass $test
61}
62
63if ![prelink_yes $prelink_args] {
64    # Maybe we don't have prelink.
65    return -1
66}
67
68set found 0
69set coredir "[standard_output_file coredir.[getpid]]"
70file mkdir $coredir
71catch "system \"(cd ${coredir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""
72
73foreach i "${coredir}/core ${coredir}/core.coremaker.c ${binfile}.core" {
74    if [remote_file build exists $i] {
75	remote_exec build "mv $i [standard_output_file prelink.core]"
76	set found 1
77    }
78}
79# Check for "core.PID".
80if { $found == 0 } {
81    set names [glob -nocomplain -directory $coredir core.*]
82    if {[llength $names] == 1} {
83        set corefile [file join $coredir [lindex $names 0]]
84        remote_exec build "mv $corefile [standard_output_file prelink.core]"
85        set found 1
86    }
87}
88
89# Try to clean up after ourselves.
90remote_file build delete [file join $coredir coremmap.data]
91remote_exec build "rmdir $coredir"
92
93if { $found == 0  } {
94    warning "can't generate a core file - prelink tests suppressed - check ulimit -c"
95    return 0
96}
97
98# Relink $libfile to a different address.
99if ![prelink_yes $prelink_args] {
100    return -1
101}
102
103# Start with a fresh gdb
104
105clean_restart $executable
106
107# Print the "adjusting expectations" message.
108gdb_test_no_output "set verbose on"
109
110gdb_test "core-file [standard_output_file prelink.core]" "Using PIC \\(Position Independent Code\\) prelink displacement 0x\[^0\]\[0-9a-f\]* for \[^\r\n\]*[file tail ${libfile}].*" "seen displacement message"
111
112gdb_test "p &bssvar == bssvarp" " = 1" ".dynbss vs. .bss address shift"
113