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e2882c85 | 1 | # Copyright (C) 2003-2018 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 | 30 | |
0ab77f5f TT |
31 | standard_testfile .c shreloc1.c shreloc2.c |
32 | ||
33 | set srcfile $srcdir/$subdir/$srcfile | |
34 | set lib1src $srcdir/$subdir/$srcfile2 | |
35 | set lib2src $srcdir/$subdir/$srcfile3 | |
36 | set binfile [standard_output_file $testfile] | |
37 | set lib1_sl [standard_output_file shreloc1.sl] | |
38 | set lib2_sl [standard_output_file shreloc2.sl] | |
96b0c7ac | 39 | |
4c93b1db | 40 | if [get_compiler_info] { |
96b0c7ac | 41 | return -1 |
53df362e RG |
42 | } |
43 | ||
96b0c7ac DJ |
44 | set lib_opts "debug" |
45 | set exec_opts [list debug shlib=$lib1_sl shlib=$lib2_sl] | |
53df362e RG |
46 | |
47 | if {([istarget "*pc-cygwin"] || [istarget "*pc-mingw32"]) } { | |
05cfdb42 | 48 | lappend lib_opts "ldflags=-Wl,--image-base,0x04000000" |
53df362e RG |
49 | } |
50 | ||
96b0c7ac DJ |
51 | if [test_compiler_info "xlc-*"] { |
52 | ||
53 | # IBM's xlc compiler does not add static variables to the ELF symbol | |
54 | # table by default. We need this option to make the variables show | |
55 | # up in "maint print msymbols". | |
56 | ||
57 | lappend lib_opts "additional_flags=-qstatsym" | |
58 | ||
53df362e RG |
59 | } |
60 | ||
96b0c7ac | 61 | if { [gdb_compile_shlib $lib1src $lib1_sl $lib_opts] != ""} { |
bc6c7af4 | 62 | untested "could not build $lib1_sl." |
96b0c7ac DJ |
63 | return -1 |
64 | } elseif { [gdb_compile_shlib $lib2src $lib2_sl $lib_opts] != ""} { | |
bc6c7af4 | 65 | untested "could not build $lib1_s2." |
96b0c7ac DJ |
66 | return -1 |
67 | } elseif { [gdb_compile $srcfile $binfile executable $exec_opts] != ""} { | |
bc6c7af4 | 68 | untested "could not build $binfile." |
53df362e RG |
69 | return -1 |
70 | } | |
71 | ||
96b0c7ac DJ |
72 | # Start with a fresh gdb. |
73 | ||
0ab77f5f | 74 | clean_restart $binfile |
d9019901 SM |
75 | gdb_load_shlib $lib1_sl |
76 | gdb_load_shlib $lib2_sl | |
53df362e RG |
77 | |
78 | # Load up the shared objects | |
79 | if ![runto_main] then { | |
bc6c7af4 | 80 | fail "can't run to main" |
53df362e RG |
81 | return 0 |
82 | } | |
83 | ||
53df362e RG |
84 | # |
85 | # Check debugging symbol relocations | |
86 | # | |
87 | ||
88 | # Check extern function for relocation | |
89 | set fn_1_addr [get_var_address fn_1] | |
90 | set fn_2_addr [get_var_address fn_2] | |
91 | ||
92 | if { "${fn_1_addr}" == "${fn_2_addr}" } { | |
93 | fail "relocated extern functions have different addresses" | |
94 | } else { | |
95 | pass "relocated extern functions have different addresses" | |
96 | } | |
97 | ||
98 | # Check extern var for relocation | |
99 | set extern_var_1_addr [get_var_address extern_var_1] | |
100 | set extern_var_2_addr [get_var_address extern_var_2] | |
101 | ||
102 | if { "${extern_var_1_addr}" == "${extern_var_2_addr}" } { | |
103 | fail "relocated extern variables have different addresses" | |
104 | } else { | |
105 | pass "relocated extern variables have different addresses" | |
106 | } | |
107 | ||
108 | # Check static var for relocation | |
109 | set static_var_1_addr [get_var_address static_var_1] | |
110 | set static_var_2_addr [get_var_address static_var_2] | |
111 | ||
112 | if { "${static_var_1_addr}" == "${static_var_2_addr}" } { | |
113 | fail "relocated static variables have different addresses" | |
114 | } else { | |
115 | pass "relocated static variables have different addresses" | |
116 | } | |
117 | ||
118 | # | |
119 | # Check minimal symbol relocations | |
120 | # | |
121 | ||
122 | proc send_gdb_discard { command } { | |
123 | # Send a command to gdb and discard output up to the next prompt | |
124 | ||
125 | global gdb_prompt | |
126 | ||
53df362e | 127 | # Discard output |
02746bbc | 128 | gdb_test_multiple "${command}" "${command}" { |
53df362e RG |
129 | -re ".*\[\r\n]+${gdb_prompt} $" { |
130 | return 1 | |
131 | } | |
132 | timeout { | |
133 | fail "{$command} (timeout)" | |
134 | return 0 | |
135 | } | |
136 | } | |
137 | } | |
138 | ||
139 | proc get_msym_addrs { var msymfile } { | |
140 | # Extract the list of values for symbols matching var in the | |
141 | # minimal symbol output file | |
142 | ||
143 | global gdb_prompt hex | |
144 | set result "" | |
145 | ||
146 | send_gdb "shell grep -E \" ${var}(\[ \t\]+.*)?\$\" ${msymfile}\n" | |
147 | ||
148 | while 1 { | |
149 | gdb_expect { | |
150 | -re "\[\[\]\[ 0-9\]+\] . (${hex}) ${var}(\[ \t\]+\[^\r\n\]*)?\[\r\n\]+" { | |
151 | set result [concat $result $expect_out(1,string)] | |
152 | } | |
153 | ||
154 | -re "$gdb_prompt $" { | |
a8b7528f | 155 | pass "get_msym_addrs ${var}" |
53df362e RG |
156 | return "${result}" |
157 | } | |
158 | ||
159 | -re "\[^\r\n\]*\[\r\n\]+" { | |
160 | # Skip | |
161 | } | |
162 | ||
163 | timeout { | |
164 | fail "get_msym_addrs ${var} (timeout)" | |
165 | return -1 | |
166 | } | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | proc check_same {var msymfile} { | |
172 | # Check that the minimal symbol values matching var are the same | |
173 | ||
174 | set len [llength [lsort -unique [get_msym_addrs "${var}" "${msymfile}"]]] | |
175 | ||
176 | if { $len == 1 } { | |
177 | return 1 | |
178 | } else { | |
179 | return 0 | |
180 | } | |
181 | } | |
182 | ||
183 | proc check_different {var msymfile} { | |
184 | # Check that the minimal symbol values matching var are different | |
185 | ||
186 | set addr_list [lsort [get_msym_addrs "${var}" "${msymfile}"]] | |
187 | set prev "" | |
188 | ||
189 | if { [llength ${addr_list}] < 2 } { | |
190 | return 0 | |
191 | } | |
192 | ||
193 | foreach addr ${addr_list} { | |
194 | if { ${prev} == ${addr} } { | |
195 | return 0 | |
196 | } | |
197 | set prev ${addr} | |
198 | } | |
199 | ||
200 | return 1 | |
201 | } | |
202 | ||
2ed2ad44 YQ |
203 | if [is_remote host] { |
204 | set msymfile shreloc.txt | |
205 | } else { | |
206 | set msymfile [standard_output_file shreloc.txt] | |
207 | } | |
53df362e RG |
208 | |
209 | if [send_gdb_discard "maint print msymbols ${msymfile}"] { | |
210 | if {[check_different "static_var_\[12\]" "${msymfile}"]} { | |
211 | pass "(msymbol) relocated static vars have different addresses" | |
212 | } else { | |
213 | fail "(msymbol) relocated static vars have different addresses" | |
214 | } | |
215 | ||
216 | if {[check_different "extern_var_\[12\]" "${msymfile}"]} { | |
217 | pass "(msymbol) relocated extern vars have different addresses" | |
218 | } else { | |
219 | fail "(msymbol) relocated extern vars have different addresses" | |
220 | } | |
221 | ||
222 | if {[check_different "fn_\[12\]" "${msymfile}"]} { | |
223 | pass "(msymbol) relocated functions have different addresses" | |
224 | } else { | |
225 | fail "(msymbol) relocated functions have different addresses" | |
226 | } | |
227 | } | |
228 | ||
229 | if {([istarget "*pc-cygwin"] || [istarget "*pc-mingw32"]) } { | |
230 | # | |
231 | # We know the names of some absolute symbols included in the | |
232 | # portable-executable (DLL) format. Check that they didn't get | |
233 | # relocated. | |
234 | # | |
235 | # A better approach would be include absolute symbols via the assembler. | |
236 | # | |
237 | if {[check_same "_minor_os_version__" "${msymfile}"]} { | |
bc6c7af4 | 238 | pass "absolute symbols not relocated" |
53df362e | 239 | } else { |
bc6c7af4 | 240 | fail "absolute symbols not relocated" |
53df362e RG |
241 | } |
242 | } |