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 with_test_prefix "print addresses, static vars" {
 156     # Print the addresses of static variables.
 157     set static_foo_addr [get_var_address static_foo]
 158     set static_bar_addr [get_var_address static_bar]
 159 }
 160
 161 # Make sure they have different addresses.
 162 if { "${static_foo_addr}" == "${static_bar_addr}" } {
 163   fail "static variables have different addresses"
 164 } else {
 165   pass "static variables have different addresses"
 166 }
 167
 168 with_test_prefix "print addresses, global vars" {
 169     # Print the addresses of global variables.
 170     set global_foo_addr [get_var_address global_foo]
 171     set global_bar_addr [get_var_address global_bar]
 172 }
 173
 174 # Make sure they have different addresses.
 175 if { "${global_foo_addr}" == "${global_bar_addr}" } {
 176   fail "global variables have different addresses"
 177 } else {
 178   pass "global variables have different addresses"
 179 }
 180
 181 with_test_prefix "print addresses, functions" {
 182     # Print the addresses of functions.
 183     set function_foo_addr [get_var_address function_foo]
 184     set function_bar_addr [get_var_address function_bar]
 185 }
 186
 187 # Make sure they have different addresses.
 188 if { "${function_foo_addr}" == "${function_bar_addr}" } {
 189   fail "functions have different addresses"
 190 } else {
 191   pass "functions have different addresses"
 192 }
 193
 194 # Now use a variable as an offset to add-symbol-file, and check that
 195 # the functions' addresses change.
 196
 197 gdb_exit
 198 gdb_start
 199 gdb_reinitialize_dir $srcdir/$subdir
 200
 201 gdb_test_no_output "set \$offset = 0x10000"
 202
 203 # Load the object file.
 204 gdb_test "add-symbol-file ${binfile} \$offset" \
 205         "Reading symbols from .*${testfile}\\.o\\.\\.\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
 206         "add-symbol-file ${testfile}.o \$offset" \
 207         "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x10000\[\r\n\]+\\(y or n\\) " \
 208         "y"
 209
 210 # Print the addresses of functions.
 211 set new_function_foo_addr [get_var_address function_foo]
 212
 213 # Make sure they have different addresses.
 214 if { "${function_foo_addr}" == "${new_function_foo_addr}" } {
 215   fail "function foo has a different address"
 216 } else {
 217   pass "function foo has a different address"
 218 }
 219
 220 # Load the object using symbol-file with an offset and check that
 221 # all addresses are moved by that offset.
 222
 223 set offset 0x10000
 224 clean_restart
 225 gdb_test "symbol-file -o $offset $binfile" \
 226     "Reading symbols from ${binfile}\.\.\." \
 227     "symbol-file with offset"
 228
 229 with_test_prefix "static vars" {
 230     # Make sure the address of a static variable is moved by offset.
 231     set new_static_foo_addr [get_var_address static_foo]
 232     gdb_assert {${new_static_foo_addr} == ${static_foo_addr} + $offset} \
 233         "static variable foo is moved by offset"
 234 }
 235
 236 with_test_prefix "global vars" {
 237     # Make sure the address of a global variable is moved by offset.
 238     set new_global_foo_addr [get_var_address global_foo]
 239     gdb_assert {${new_global_foo_addr} == ${global_foo_addr} + $offset} \
 240         "global variable foo is moved by offset"
 241 }
 242
 243 with_test_prefix "functions" {
 244     # Make sure the address of a function is moved by offset.
 245     set new_function_foo_addr [get_var_address function_foo]
 246     gdb_assert {${new_function_foo_addr} == ${function_foo_addr} + $offset} \
 247         "function foo is moved by offset"
 248 }
 249
 250 # Load the object using add-symbol-file with an offset and check that
 251 # all addresses are moved by that offset.
 252
 253 set offset 0x10000
 254 clean_restart
 255 gdb_test "add-symbol-file -o $offset $binfile" \
 256     "Reading symbols from ${binfile}\.\.\." \
 257     "add-symbol-file with offset" \
 258     "add symbol table from file \".*${testfile}\\.o\" with all sections offset by $offset\[\r\n\]+\\(y or n\\) " \
 259     "y"
 260
 261 with_test_prefix "static scope, 2nd" {
 262     # Make sure the address of a static variable is moved by offset.
 263     set new_static_foo_addr [get_var_address static_foo]
 264     gdb_assert { ${new_static_foo_addr} == ${static_foo_addr} + $offset } \
 265         "static variable foo is moved by offset"
 266 }
 267
 268 with_test_prefix "global vars, 2nd" {
 269     # Make sure the address of a global variable is moved by offset.
 270     set new_global_foo_addr [get_var_address global_foo]
 271     gdb_assert { ${new_global_foo_addr} == ${global_foo_addr} + $offset } \
 272         "global variable foo is moved by offset"
 273 }
 274
 275 with_test_prefix "functions, 2nd" {
 276     # Make sure the address of a function is moved by offset.
 277     set new_function_foo_addr [get_var_address function_foo]
 278     gdb_assert { ${new_function_foo_addr} == ${function_foo_addr} + $offset } \
 279         "function foo is moved by offset"
 280 }
 281
 282 # Re-load the object giving an explicit address for .text
 283
 284 set text [ format "0x%x" [expr ${function_foo_addr} + 0x20000] ]
 285 clean_restart
 286 gdb_test "add-symbol-file $binfile -o $offset $text" \
 287     "Reading symbols from ${binfile}\.\.\." \
 288     "add-symbol-file with offset, text address given" \
 289     "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = ${text}\[\r\n\]+with other sections offset by ${offset}\[\r\n\]+\\(y or n\\) " \
 290     "y"
 291
 292 with_test_prefix "functions, 3rd" {
 293     # Make sure function has a different addresses now.
 294     set function_foo_addr [get_var_address function_foo]
 295     gdb_assert { ${function_foo_addr} != ${new_function_foo_addr} } \
 296         "function foo has a different address"
 297 }
 298
 299 # Re-load the object giving an explicit address for .data
 300
 301 set data [ format "0x%x" [expr ${global_foo_addr} + 0x20000] ]
 302 clean_restart
 303 gdb_test "add-symbol-file $binfile -o $offset -s .data $data" \
 304     "Reading symbols from ${binfile}\.\.\." \
 305     "add-symbol-file with offset, data address given" \
 306     "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.data_addr = ${data}\[\r\n\]+with other sections offset by ${offset}\[\r\n\]+\\(y or n\\) " \
 307     "y"
 308
 309 with_test_prefix "global vars, 3rd" {
 310     # Make sure variable has a different addresses now.
 311     set global_foo_addr [get_var_address global_foo]
 312     gdb_assert { ${global_foo_addr} != ${new_global_foo_addr} } \
 313         "global variable foo has a different address"
 314 }
 315
 316 # Now try loading the object as an exec-file; we should be able to print
 317 # the values of variables after we do this.
 318
 319 gdb_exit
 320 gdb_start
 321 gdb_reinitialize_dir $srcdir/$subdir
 322 gdb_file_cmd ${binfile}
 323
 324 # Check the values of the variables.
 325 gdb_test "print static_foo" "\\\$$decimal = 1"
 326 gdb_test "print static_bar" "\\\$$decimal = 2"
 327 gdb_test "print global_foo" "\\\$$decimal = 3"
 328 gdb_test "print global_bar" "\\\$$decimal = 4"