gdb/testsuite/gdb.base/relocate.exp

   1 # Copyright 2002-2020 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 # relocate.exp -- Expect script to test loading symbols from unrelocated
  17 #                 object files.
  18
  19 standard_testfile .c
  20 append binfile .o
  21
  22 remote_exec build "rm -f ${binfile}"
  23 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {debug}] != "" } {
  24      untested "failed to compile"
  25      return -1
  26 }
  27
  28 gdb_exit
  29 gdb_start
  30 gdb_reinitialize_dir $srcdir/$subdir
  31
  32 #Check that invalid options are rejected.
  33 foreach x {"-raednow" "readnow" "foo" "-readnow s"} {
  34     set word [lindex $x [expr [llength $x]-1]]
  35     gdb_test "add-symbol-file ${binfile} 0 $x" \
  36         "Unrecognized argument \"$word\"" \
  37         "add-symbol-file: unknown option $word"
  38 }
  39
  40 # Check that we can pass parameters using any position in the command
  41 # line.
  42 set test "add-symbol-file positionless -readnow"
  43 gdb_test_multiple "add-symbol-file -readnow $binfile 0x100 -s .bss 0x3" $test {
  44     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.bss_addr = 0x3\r\n\\(y or n\\) " {
  45         gdb_test "n" "Not confirmed\." $test
  46     }
  47 }
  48 # When we use -s as the first argument, the section will be printed
  49 # first as well.
  50 set test "add-symbol-file positionless -s"
  51 gdb_test_multiple "add-symbol-file -s .bss 0x3 -readnow $binfile 0x100" $test {
  52     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.bss_addr = 0x3\r\n\\(y or n\\) " {
  53         gdb_test "n" "Not confirmed\." $test
  54     }
  55 }
  56 set test "add-symbol-file positionless -s, no -readnow"
  57 gdb_test_multiple "add-symbol-file $binfile 0x100 -s .bss 0x3" $test {
  58     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.bss_addr = 0x3\r\n\\(y or n\\) " {
  59         gdb_test "n" "Not confirmed\." $test
  60     }
  61 }
  62 # Check that passing "-s .text", no matter the position, always has
  63 # the same result.
  64 set test "add-symbol-file different -s .text, after file"
  65 gdb_test_multiple "add-symbol-file $binfile 0x100 -s .text 0x200" $test {
  66     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.text_addr = 0x200\r\n\\(y or n\\) " {
  67         gdb_test "n" "Not confirmed\." $test
  68     }
  69 }
  70 set test "add-symbol-file different -s .text, before file"
  71 gdb_test_multiple "add-symbol-file -s .text 0x200 $binfile 0x100" $test {
  72     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\.text_addr = 0x200\r\n\\(y or n\\) " {
  73         gdb_test "n" "Not confirmed\." $test
  74     }
  75 }
  76 # Check that passing a single "-s .text" is equivalent to passing
  77 # the text address in a positional argument.
  78 set test "add-symbol-file -s .text, no address"
  79 gdb_test_multiple "add-symbol-file $binfile -s .text 0x100" $test {
  80     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\\(y or n\\) " {
  81         gdb_test "n" "Not confirmed\." $test
  82     }
  83 }
  84 # Check section addresses can be omitted.
  85 set test "add-symbol-file no address"
  86 gdb_test_multiple "add-symbol-file $binfile" $test {
  87     -re "add symbol table from file \"${binfile}\"\r\n\\(y or n\\) " {
  88         gdb_test "n" "Not confirmed\." $test
  89     }
  90 }
  91 # Test that passing "--" disables option processing.
  92 gdb_test "add-symbol-file -- $binfile 0x100 -s .bss 0x3" \
  93     "Unrecognized argument \"-s\"" \
  94     "add-symbol-file with -- disables option processing"
  95 set test "add-symbol-file with -- disables option processing, non-existent filename"
  96 gdb_test_multiple "add-symbol-file -- -non-existent-file 0x100" $test {
  97     -re "add symbol table from file \"-non-existent-file\" at\r\n\t\.text_addr = 0x100\r\n\\(y or n\\) " {
  98         gdb_test "y" "-non-existent-file: No such file or directory\." $test
  99     }
 100 }
 101 # Test that passing the wrong number of arguments to '-s' leads to an
 102 # error.
 103 gdb_test "add-symbol-file $binfile -s" \
 104     "Missing section name after \"-s\"" \
 105     "add-symbol-file with -s without section name"
 106 gdb_test "add-symbol-file $binfile -s .bss" \
 107     "Missing section address after \"-s\"" \
 108     "add-symbol-file with -s without section address"
 109 # Test that '-s' accepts section names with '-'
 110 set test "add-symbol-file with -s using section name starting with dash"
 111 gdb_test_multiple "add-symbol-file -s -section-name 0x200 $binfile 0x100" $test {
 112     -re "add symbol table from file \"${binfile}\" at\r\n\t\.text_addr = 0x100\r\n\t\-section-name_addr = 0x200\r\n\\(y or n\\) " {
 113         gdb_test "n" "Not confirmed\." $test
 114     }
 115 }
 116 # Since we're here, might as well test the 'symbol-file' command and
 117 # if its arguments can also be passed at any position.
 118 gdb_test "symbol-file -readnow $binfile" \
 119     "Reading symbols from ${binfile}\.\.\.\r\nExpanding full symbols from ${binfile}\.\.\." \
 120     "symbol-file with -readnow first"
 121 clean_restart
 122 gdb_test "symbol-file $binfile -readnow" \
 123     "Reading symbols from ${binfile}\.\.\.\r\nExpanding full symbols from ${binfile}\.\.\." \
 124     "symbol-file with -readnow second"
 125 gdb_test "symbol-file -readnow" \
 126     "no symbol file name was specified" \
 127     "symbol-file without filename"
 128 gdb_test "symbol-file -- -non-existent-file" \
 129     "-non-existent-file: No such file or directory\." \
 130     "symbol-file with -- disables option processing"
 131 clean_restart
 132 gdb_test "symbol-file -readnow -- $binfile" \
 133     "Reading symbols from ${binfile}\.\.\.\r\nExpanding full symbols from ${binfile}\.\.\." \
 134     "symbol-file with -- and -readnow"
 135 gdb_test "symbol-file -- $binfile -readnow" \
 136     "Unrecognized argument \"-readnow\"" \
 137     "symbol-file with -- and -readnow, invalid option"
 138
 139 clean_restart
 140
 141 gdb_test "add-symbol-file ${binfile} 0 -s" \
 142     "Missing section name after .-s." \
 143     "add-symbol-file bare -s"
 144 gdb_test "add-symbol-file ${binfile} 0 -s .whatever" \
 145     "Missing section address after .-s." \
 146     "add-symbol-file missing address"
 147
 148 # Load the object file.
 149 gdb_test "add-symbol-file ${binfile} 0" \
 150         "Reading symbols from .*${testfile}\\.o\\.\\.\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
 151         "add-symbol-file ${testfile}.o 0" \
 152         "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x0\[\r\n\]+\\(y or n\\) " \
 153         "y"
 154
 155 # Print the addresses of static variables.
 156 set static_foo_addr [get_var_address static_foo]
 157 set static_bar_addr [get_var_address static_bar]
 158
 159 # Make sure they have different addresses.
 160 if { "${static_foo_addr}" == "${static_bar_addr}" } {
 161   fail "static variables have different addresses"
 162 } else {
 163   pass "static variables have different addresses"
 164 }
 165
 166 # Print the addresses of global variables.
 167 set global_foo_addr [get_var_address global_foo]
 168 set global_bar_addr [get_var_address global_bar]
 169
 170 # Make sure they have different addresses.
 171 if { "${global_foo_addr}" == "${global_bar_addr}" } {
 172   fail "global variables have different addresses"
 173 } else {
 174   pass "global variables have different addresses"
 175 }
 176
 177 # Print the addresses of functions.
 178 set function_foo_addr [get_var_address function_foo]
 179 set function_bar_addr [get_var_address function_bar]
 180
 181 # Make sure they have different addresses.
 182 if { "${function_foo_addr}" == "${function_bar_addr}" } {
 183   fail "functions have different addresses"
 184 } else {
 185   pass "functions have different addresses"
 186 }
 187
 188 # Now use a variable as an offset to add-symbol-file, and check that
 189 # the functions' addresses change.
 190
 191 gdb_exit
 192 gdb_start
 193 gdb_reinitialize_dir $srcdir/$subdir
 194
 195 gdb_test_no_output "set \$offset = 0x10000"
 196
 197 # Load the object file.
 198 gdb_test "add-symbol-file ${binfile} \$offset" \
 199         "Reading symbols from .*${testfile}\\.o\\.\\.\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
 200         "add-symbol-file ${testfile}.o \$offset" \
 201         "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x10000\[\r\n\]+\\(y or n\\) " \
 202         "y"
 203
 204 # Print the addresses of functions.
 205 set new_function_foo_addr [get_var_address function_foo]
 206
 207 # Make sure they have different addresses.
 208 if { "${function_foo_addr}" == "${new_function_foo_addr}" } {
 209   fail "function foo has a different address"
 210 } else {
 211   pass "function foo has a different address"
 212 }
 213
 214 # Load the object using symbol-file with an offset and check that
 215 # all addresses are moved by that offset.
 216
 217 set offset 0x10000
 218 clean_restart
 219 gdb_test "symbol-file -o $offset $binfile" \
 220     "Reading symbols from ${binfile}\.\.\." \
 221     "symbol-file with offset"
 222
 223 # Make sure the address of a static variable is moved by offset.
 224 set new_static_foo_addr [get_var_address static_foo]
 225 gdb_assert {${new_static_foo_addr} == ${static_foo_addr} + $offset} \
 226     "static variable foo is moved by offset"
 227
 228 # Make sure the address of a global variable is moved by offset.
 229 set new_global_foo_addr [get_var_address global_foo]
 230 gdb_assert {${new_global_foo_addr} == ${global_foo_addr} + $offset} \
 231     "global variable foo is moved by offset"
 232
 233 # Make sure the address of a function is moved by offset.
 234 set new_function_foo_addr [get_var_address function_foo]
 235 gdb_assert {${new_function_foo_addr} == ${function_foo_addr} + $offset} \
 236     "function foo is moved by offset"
 237
 238 # Load the object using add-symbol-file with an offset and check that
 239 # all addresses are moved by that offset.
 240
 241 set offset 0x10000
 242 clean_restart
 243 gdb_test "add-symbol-file -o $offset $binfile" \
 244     "Reading symbols from ${binfile}\.\.\." \
 245     "add-symbol-file with offset" \
 246     "add symbol table from file \".*${testfile}\\.o\" with all sections offset by $offset\[\r\n\]+\\(y or n\\) " \
 247     "y"
 248
 249 # Make sure the address of a static variable is moved by offset.
 250 set new_static_foo_addr [get_var_address static_foo]
 251 gdb_assert { ${new_static_foo_addr} == ${static_foo_addr} + $offset } \
 252     "static variable foo is moved by offset"
 253
 254 # Make sure the address of a global variable is moved by offset.
 255 set new_global_foo_addr [get_var_address global_foo]
 256 gdb_assert { ${new_global_foo_addr} == ${global_foo_addr} + $offset } \
 257     "global variable foo is moved by offset"
 258
 259 # Make sure the address of a function is moved by offset.
 260 set new_function_foo_addr [get_var_address function_foo]
 261 gdb_assert { ${new_function_foo_addr} == ${function_foo_addr} + $offset } \
 262     "function foo is moved by offset"
 263
 264 # Re-load the object giving an explicit address for .text
 265
 266 set text [ format "0x%x" [expr ${function_foo_addr} + 0x20000] ]
 267 clean_restart
 268 gdb_test "add-symbol-file $binfile -o $offset $text" \
 269     "Reading symbols from ${binfile}\.\.\." \
 270     "add-symbol-file with offset, text address given" \
 271     "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = ${text}\[\r\n\]+with other sections offset by ${offset}\[\r\n\]+\\(y or n\\) " \
 272     "y"
 273
 274 # Make sure function has a different addresses now.
 275 set function_foo_addr [get_var_address function_foo]
 276 gdb_assert { ${function_foo_addr} != ${new_function_foo_addr} } \
 277     "function foo has a different address"
 278
 279 # Re-load the object giving an explicit address for .data
 280
 281 set data [ format "0x%x" [expr ${global_foo_addr} + 0x20000] ]
 282 clean_restart
 283 gdb_test "add-symbol-file $binfile -o $offset -s .data $data" \
 284     "Reading symbols from ${binfile}\.\.\." \
 285     "add-symbol-file with offset, data address given" \
 286     "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.data_addr = ${data}\[\r\n\]+with other sections offset by ${offset}\[\r\n\]+\\(y or n\\) " \
 287     "y"
 288
 289 # Make sure variable has a different addresses now.
 290 set global_foo_addr [get_var_address global_foo]
 291 gdb_assert { ${global_foo_addr} != ${new_global_foo_addr} } \
 292     "global variable foo has a different address"
 293
 294 # Now try loading the object as an exec-file; we should be able to print
 295 # the values of variables after we do this.
 296
 297 gdb_exit
 298 gdb_start
 299 gdb_reinitialize_dir $srcdir/$subdir
 300 gdb_file_cmd ${binfile}
 301
 302 # Check the values of the variables.
 303 gdb_test "print static_foo" "\\\$$decimal = 1"
 304 gdb_test "print static_bar" "\\\$$decimal = 2"
 305 gdb_test "print global_foo" "\\\$$decimal = 3"
 306 gdb_test "print global_bar" "\\\$$decimal = 4"