1# Expect script for common symbol tests
2#   Copyright (C) 2003-2014 Free Software Foundation, Inc.
3#
4# This file is part of the GNU Binutils.
5#
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 3 of the License, or
9# (at your option) any later version.
10#
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., 51 Franklin Street - Fifth Floor, Boston,
19# MA 02110-1301, USA.
20#
21# Written by H.J. Lu (hjl@gnu.org)
22#
23
24# Make sure that ld correctly handles common symbols in ELF.
25
26# This test can only be run on ELF platforms.
27if ![is_elf_format] {
28    return
29}
30
31# hpux assembly is weird
32if [istarget "hppa*-*-hpux*"] {
33    return
34}
35
36proc test_sort_common {} {
37    global exec_output
38    global objdump
39    global srcdir
40    global subdir
41    global as
42    global ld
43
44    set test "--sort-common (descending)"
45
46    verbose "Check to see that --sort-common sorts in descending alignment"
47
48    # We do not run the sort common tests for the DLX target because we know that the linker
49    # will seg-fault.  The built-in DLX linker script requires that there be something in the
50    # .text section and our sort-common.s file does not provide anything.
51    if [istarget dlx-*-*] {
52	untested "$test"
53	return 0
54    }
55
56    if { ![ld_assemble $as $srcdir/$subdir/sort-common.s tmpdir/sort-common.o] } {
57	unresolved "$test"
58	return 0
59    }
60
61    if { ![ld_simple_link $ld tmpdir/sort-common.dx "--sort-common=descending tmpdir/sort-common.o"] } {
62	fail "$test"
63	return 0
64    }
65
66    send_log "$objdump --syms tmpdir/sort-common.dx | grep var | sort\n"
67    set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.dx | grep var | sort"]
68
69    # Don't know why, but the CR ports fail this test.
70    setup_xfail "cr16-*-*" "crx-*-*"
71
72    # Note: The second regexp is for targets which put small commons in a .sbss
73    #  section and large commons in a .bss section.
74    if {   ![regexp ".*var_16.*var_8.*var_4.*var_2.*var_1.*" $exec_output]
75        && ![regexp ".*sbss.*var_8.*var_4.*var_2.*var_1.*bss.*var_16.*" $exec_output] } {
76	fail $test
77    } else {
78	pass $test
79    }
80
81    set test "--sort-common (ascending)"
82
83    verbose "Check to see that --sort-common=ascending sorts in ascending alignment"
84
85    if { ![ld_simple_link $ld tmpdir/sort-common.ax "--sort-common=ascending tmpdir/sort-common.o"] } {
86	fail "$test"
87	return 0
88    }
89
90    send_log "$objdump --syms tmpdir/sort-common.ax | grep var | sort\n"
91    set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.ax | grep var | sort"]
92
93    if {![regexp ".*var_1.*var_2.*var_4.*var_8.*var_16.*" $exec_output]} {
94	fail $test
95	return 0
96    }
97
98    pass $test
99    return 1
100}
101
102test_sort_common
103
104set test1	"size/aligment change of common symbols"
105set test1w1	"$test1 (warning 1)"
106set test1w2	"$test1 (warning 2)"
107set test1c1	"$test1 (change 1)"
108set test1c2	"$test1 (change 2)"
109
110if { ![is_remote host] && [which $CC] == 0 } {
111    untested $test1w1
112    untested $test1w2
113    untested $test1c1
114    untested $test1c2
115    return
116}
117if { [istarget score-*-*] } {
118    untested $test1w1
119    untested $test1w2
120    untested $test1c1
121    untested $test1c2
122    return
123}
124
125proc dump_common1 { testname } {
126    global exec_output
127    global READELF
128
129    send_log "$READELF --syms tmpdir/common1.o | grep foo\n"
130    set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1.o | grep foo"]
131
132    if {   ![regexp "(\[ 	\]*)(\[0-9\]+):(\[ 	\]*)(\[0\]*)80(\[ 	\]+)4(\[ 	\]+)(COMMON|OBJECT)(\[ 	\]+)GLOBAL(\[ 	\]+)DEFAULT(\[ 	\]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[ 	\]+)_?foo2" $exec_output]
133	|| ![regexp "(\[ 	\]*)(\[0-9\]+):(\[ 	\]*)(\[0-9\]+)(\[ 	\]+)21(\[ 	\]+)OBJECT(\[ 	\]+)GLOBAL(\[ 	\]+)DEFAULT(\[ 	\]+)(\[0-9\]+)(\[ 	\]+)_?foo1" $exec_output] } {
134	verbose $exec_output
135	fail $testname
136	return 0
137    }
138
139    return 1
140}
141
142proc stt_common_test { options testname } {
143    global exec_output
144    global READELF
145    global ld
146
147    set options "$options tmpdir/common1a.o"
148
149    if { ! [ld_simple_link $ld tmpdir/common.exe $options] } {
150      unresolved $testname
151      return 0
152    }
153
154    send_log "$READELF --syms tmpdir/common.exe | grep foo\n"
155    set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common.exe | grep foo"]
156
157    if {![regexp "(\[ 	\]*)(\[0-9\]+):(\[ 	\]*)(\[0-9\]+)(\[ 	\]+)(\[0-9\]+)(\[ 	\]+)COMMON(\[ 	\]+)GLOBAL(\[ 	\]+)DEFAULT(\[ 	\]+)(\[0-9\]+)(\[ 	\]+)_?foo2" $exec_output] } {
158	fail $testname
159	return 0
160    }
161
162    pass $testname
163    return 1
164}
165
166# Check to see if the assembler is generating symbols with the STT_COMMON type.
167proc assembler_generates_commons {} {
168    global exec_output
169    global READELF
170
171    verbose "Check to see if STT_COMMON symbols are being generated:"
172    set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1a.o | grep foo"]
173
174    if { ![regexp "(\[ 	\]*)(\[0-9\]+):(\[ 	\]*)(\[0\]*)80(\[ 	\]+).(\[ 	\]+)COMMON(\[ 	\]+)GLOBAL(\[ 	\]+)DEFAULT(\[ 	\]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[ 	\]+)_?foo2" $exec_output] } {
175	verbose "STT_COMMON not generated"
176	return 0
177    }
178
179    verbose "STT_COMMON's are generated"
180    return 1
181}
182
183if [istarget nios2*-*-*] {
184    set CFLAGS "$CFLAGS -G0"
185}
186
187# Explicitly use "-fcommon" so that even if $CFLAGS includes
188# "-fno-common", these tests are compiled as expected.
189if {   ![ld_compile "$CC $CFLAGS -fcommon" $srcdir/$subdir/common1a.c tmpdir/common1a.o]
190    || ![ld_compile "$CC $CFLAGS -fcommon" $srcdir/$subdir/common1b.c tmpdir/common1b.o] } {
191    unresolved $test1
192    return
193}
194
195global ld
196global link_output
197
198set options "-r tmpdir/common1a.o tmpdir/common1b.o"
199
200# SH64 targets needs an extra ld option for this test.
201if [istarget sh64*-*-*] {
202    if [istarget sh64*l*-*-*] {
203	set options "-mshlelf32 $options"
204    } else {
205	set options "-mshelf32 $options"
206    }
207}
208
209if { [ld_simple_link $ld tmpdir/common1.o $options] } {
210    unresolved $test1w1
211    return
212}
213
214# This test fails on MIPS because the backend sets type_change_ok.
215# The size change warning is suppressed.  Same on hppa64.
216if {[istarget mips*-*-*] || [istarget hppa*64*-*-*]} {
217    if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
218        fail $test1w1
219    } else {
220        pass $test1w1
221    }
222} else {
223    if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output]
224         || ![regexp "Warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } {
225        fail $test1w1
226    } else {
227        pass $test1w1
228    }
229}
230
231if { [dump_common1 $test1c1] } {
232    pass $test1c1
233}
234
235set options "-r tmpdir/common1b.o tmpdir/common1a.o"
236
237# SH64 targets needs an extra ld option for this test.
238if [istarget sh64*-*-*] {
239    if [istarget sh64*l*-*-*] {
240	set options "-mshlelf32 $options"
241    } else {
242	set options "-mshelf32 $options"
243    }
244}
245
246if { [ld_simple_link $ld tmpdir/common1.o $options] } {
247    unresolved $test1w2
248    return
249}
250
251if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
252    fail $test1w2
253} else {
254    pass $test1w2
255}
256
257if { [dump_common1 $test1c2] } {
258    pass $test1c2
259}
260
261#
262# The following tests are for when we are generating STT_COMMON symbols only.
263#
264
265if { ![assembler_generates_commons] } {
266    return
267}
268
269stt_common_test "-static -e 0" "static link of common symbols"
270stt_common_test "-shared"      "shared link of common symbols"
271stt_common_test "-pie"         "position independent link of common symbols"
272
273