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0b302171 | 1 | # Copyright (C) 2003, 2005, 2007-2012 Free Software Foundation, Inc. |
53df362e RG |
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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
53df362e RG |
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 | |
e22f8b7c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
53df362e RG |
15 | # |
16 | ||
53df362e RG |
17 | # Tests for shared object file relocation. If two shared objects have |
18 | # the same load address (actually, overlapping load spaces), one of | |
19 | # them gets relocated at load-time. Check that gdb gets the right | |
20 | # values for the debugging and minimal symbols. | |
21 | ||
93f02886 | 22 | if {[skip_shlib_tests]} { |
d9407aaa NC |
23 | return 0 |
24 | } | |
25 | ||
53df362e RG |
26 | # |
27 | # This file uses shreloc.c, shreloc1.c and shreloc2.c | |
28 | # | |
29 | ||
53df362e RG |
30 | |
31 | set workdir ${objdir}/${subdir} | |
96b0c7ac DJ |
32 | set testfile "shreloc" |
33 | set libfile1 "shreloc1" | |
34 | set libfile2 "shreloc2" | |
35 | set srcfile $srcdir/$subdir/$testfile.c | |
36 | set lib1src $srcdir/$subdir/$libfile1.c | |
37 | set lib2src $srcdir/$subdir/$libfile2.c | |
38 | set binfile $objdir/$subdir/$testfile | |
39 | set lib1_sl $objdir/$subdir/$libfile1.sl | |
40 | set lib2_sl $objdir/$subdir/$libfile2.sl | |
41 | ||
4c93b1db | 42 | if [get_compiler_info] { |
96b0c7ac | 43 | return -1 |
53df362e RG |
44 | } |
45 | ||
96b0c7ac DJ |
46 | set lib_opts "debug" |
47 | set exec_opts [list debug shlib=$lib1_sl shlib=$lib2_sl] | |
53df362e RG |
48 | |
49 | if {([istarget "*pc-cygwin"] || [istarget "*pc-mingw32"]) } { | |
05cfdb42 | 50 | lappend lib_opts "ldflags=-Wl,--image-base,0x04000000" |
53df362e RG |
51 | } |
52 | ||
96b0c7ac DJ |
53 | if [test_compiler_info "xlc-*"] { |
54 | ||
55 | # IBM's xlc compiler does not add static variables to the ELF symbol | |
56 | # table by default. We need this option to make the variables show | |
57 | # up in "maint print msymbols". | |
58 | ||
59 | lappend lib_opts "additional_flags=-qstatsym" | |
60 | ||
53df362e RG |
61 | } |
62 | ||
96b0c7ac DJ |
63 | if { [gdb_compile_shlib $lib1src $lib1_sl $lib_opts] != ""} { |
64 | untested "Could not build $lib1_sl." | |
65 | return -1 | |
66 | } elseif { [gdb_compile_shlib $lib2src $lib2_sl $lib_opts] != ""} { | |
67 | untested "Could not build $lib1_s2." | |
68 | return -1 | |
69 | } elseif { [gdb_compile $srcfile $binfile executable $exec_opts] != ""} { | |
70 | untested "Could not build $binfile." | |
53df362e RG |
71 | return -1 |
72 | } | |
73 | ||
96b0c7ac DJ |
74 | # Start with a fresh gdb. |
75 | ||
53df362e RG |
76 | gdb_exit |
77 | gdb_start | |
78 | gdb_reinitialize_dir $srcdir/$subdir | |
79 | gdb_load ${workdir}/shreloc | |
93f02886 | 80 | gdb_load_shlibs $lib1_sl $lib2_sl |
53df362e RG |
81 | |
82 | # Load up the shared objects | |
83 | if ![runto_main] then { | |
84 | fail "Can't run to main" | |
85 | return 0 | |
86 | } | |
87 | ||
88 | proc get_var_address { var } { | |
02746bbc MS |
89 | global gdb_prompt hex |
90 | ||
91 | # Match output like: | |
92 | # $1 = (int *) 0x0 | |
93 | # $5 = (int (*)()) 0 | |
94 | # $6 = (int (*)()) 0x24 <function_bar> | |
95 | ||
96 | gdb_test_multiple "print &${var}" "get address of ${var}" { | |
97 | -re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $" | |
53df362e | 98 | { |
02746bbc MS |
99 | pass "get address of ${var}" |
100 | if { $expect_out(1,string) == "0" } { | |
101 | return "0x0" | |
102 | } else { | |
103 | return $expect_out(1,string) | |
104 | } | |
53df362e | 105 | } |
02746bbc MS |
106 | } |
107 | return "" | |
53df362e RG |
108 | } |
109 | ||
110 | # | |
111 | # Check debugging symbol relocations | |
112 | # | |
113 | ||
114 | # Check extern function for relocation | |
115 | set fn_1_addr [get_var_address fn_1] | |
116 | set fn_2_addr [get_var_address fn_2] | |
117 | ||
118 | if { "${fn_1_addr}" == "${fn_2_addr}" } { | |
119 | fail "relocated extern functions have different addresses" | |
120 | } else { | |
121 | pass "relocated extern functions have different addresses" | |
122 | } | |
123 | ||
124 | # Check extern var for relocation | |
125 | set extern_var_1_addr [get_var_address extern_var_1] | |
126 | set extern_var_2_addr [get_var_address extern_var_2] | |
127 | ||
128 | if { "${extern_var_1_addr}" == "${extern_var_2_addr}" } { | |
129 | fail "relocated extern variables have different addresses" | |
130 | } else { | |
131 | pass "relocated extern variables have different addresses" | |
132 | } | |
133 | ||
134 | # Check static var for relocation | |
135 | set static_var_1_addr [get_var_address static_var_1] | |
136 | set static_var_2_addr [get_var_address static_var_2] | |
137 | ||
138 | if { "${static_var_1_addr}" == "${static_var_2_addr}" } { | |
139 | fail "relocated static variables have different addresses" | |
140 | } else { | |
141 | pass "relocated static variables have different addresses" | |
142 | } | |
143 | ||
144 | # | |
145 | # Check minimal symbol relocations | |
146 | # | |
147 | ||
148 | proc send_gdb_discard { command } { | |
149 | # Send a command to gdb and discard output up to the next prompt | |
150 | ||
151 | global gdb_prompt | |
152 | ||
53df362e | 153 | # Discard output |
02746bbc | 154 | gdb_test_multiple "${command}" "${command}" { |
53df362e RG |
155 | -re ".*\[\r\n]+${gdb_prompt} $" { |
156 | return 1 | |
157 | } | |
158 | timeout { | |
159 | fail "{$command} (timeout)" | |
160 | return 0 | |
161 | } | |
162 | } | |
163 | } | |
164 | ||
165 | proc get_msym_addrs { var msymfile } { | |
166 | # Extract the list of values for symbols matching var in the | |
167 | # minimal symbol output file | |
168 | ||
169 | global gdb_prompt hex | |
170 | set result "" | |
171 | ||
172 | send_gdb "shell grep -E \" ${var}(\[ \t\]+.*)?\$\" ${msymfile}\n" | |
173 | ||
174 | while 1 { | |
175 | gdb_expect { | |
176 | -re "\[\[\]\[ 0-9\]+\] . (${hex}) ${var}(\[ \t\]+\[^\r\n\]*)?\[\r\n\]+" { | |
177 | set result [concat $result $expect_out(1,string)] | |
178 | } | |
179 | ||
180 | -re "$gdb_prompt $" { | |
a8b7528f | 181 | pass "get_msym_addrs ${var}" |
53df362e RG |
182 | return "${result}" |
183 | } | |
184 | ||
185 | -re "\[^\r\n\]*\[\r\n\]+" { | |
186 | # Skip | |
187 | } | |
188 | ||
189 | timeout { | |
190 | fail "get_msym_addrs ${var} (timeout)" | |
191 | return -1 | |
192 | } | |
193 | } | |
194 | } | |
195 | } | |
196 | ||
197 | proc check_same {var msymfile} { | |
198 | # Check that the minimal symbol values matching var are the same | |
199 | ||
200 | set len [llength [lsort -unique [get_msym_addrs "${var}" "${msymfile}"]]] | |
201 | ||
202 | if { $len == 1 } { | |
203 | return 1 | |
204 | } else { | |
205 | return 0 | |
206 | } | |
207 | } | |
208 | ||
209 | proc check_different {var msymfile} { | |
210 | # Check that the minimal symbol values matching var are different | |
211 | ||
212 | set addr_list [lsort [get_msym_addrs "${var}" "${msymfile}"]] | |
213 | set prev "" | |
214 | ||
215 | if { [llength ${addr_list}] < 2 } { | |
216 | return 0 | |
217 | } | |
218 | ||
219 | foreach addr ${addr_list} { | |
220 | if { ${prev} == ${addr} } { | |
221 | return 0 | |
222 | } | |
223 | set prev ${addr} | |
224 | } | |
225 | ||
226 | return 1 | |
227 | } | |
228 | ||
229 | set msymfile "${workdir}/shreloc.txt" | |
230 | ||
231 | if [send_gdb_discard "maint print msymbols ${msymfile}"] { | |
232 | if {[check_different "static_var_\[12\]" "${msymfile}"]} { | |
233 | pass "(msymbol) relocated static vars have different addresses" | |
234 | } else { | |
235 | fail "(msymbol) relocated static vars have different addresses" | |
236 | } | |
237 | ||
238 | if {[check_different "extern_var_\[12\]" "${msymfile}"]} { | |
239 | pass "(msymbol) relocated extern vars have different addresses" | |
240 | } else { | |
241 | fail "(msymbol) relocated extern vars have different addresses" | |
242 | } | |
243 | ||
244 | if {[check_different "fn_\[12\]" "${msymfile}"]} { | |
245 | pass "(msymbol) relocated functions have different addresses" | |
246 | } else { | |
247 | fail "(msymbol) relocated functions have different addresses" | |
248 | } | |
249 | } | |
250 | ||
251 | if {([istarget "*pc-cygwin"] || [istarget "*pc-mingw32"]) } { | |
252 | # | |
253 | # We know the names of some absolute symbols included in the | |
254 | # portable-executable (DLL) format. Check that they didn't get | |
255 | # relocated. | |
256 | # | |
257 | # A better approach would be include absolute symbols via the assembler. | |
258 | # | |
259 | if {[check_same "_minor_os_version__" "${msymfile}"]} { | |
260 | pass "Absolute symbols not relocated" | |
261 | } else { | |
262 | fail "Absolute symbols not relocated" | |
263 | } | |
264 | } |