gdb/testsuite/gdb.base/dump.exp

   1 # Copyright 2002-2024 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 # This file was written by Michael Snyder (msnyder@redhat.com)
  17 # This is a test for the gdb command "dump".
  18
  19
  20 standard_testfile
  21
  22 set options  {debug}
  23
  24 set is64bitonly "no"
  25 set endian "auto"
  26
  27 set formats {binary ihex srec tekhex  verilog}
  28
  29 if {[istarget "alpha*-*-*"]} {
  30     # SREC etc cannot handle 64-bit addresses.  Force the test
  31     # program into the low 31 bits of the address space.
  32     lappend options "ldflags=-Wl,-taso"
  33 }
  34
  35 # Runs the command 'print zero_all ()'.  Uses the PRINT_ZERO_ALL_COUNT
  36 # global to ensure the test names are unique.
  37 set print_zero_all_count 0
  38 proc print_zero_all { } {
  39     global print_zero_all_count
  40
  41     incr print_zero_all_count
  42     gdb_test "print zero_all ()" " = void" \
  43         "call ${print_zero_all_count} to zero_all function"
  44 }
  45
  46 # Debian9/Ubuntu16.10 onwards default to PIE enabled. Ensure it is disabled as
  47 # this causes addresses to be out of range for IHEX.
  48 lappend options {nopie}
  49
  50 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable ${options}] != "" } {
  51      untested "failed to compile"
  52      return -1
  53 }
  54
  55 clean_restart $binfile
  56
  57 gdb_test "dump mem /dev/null 0x10 0x20" "Cannot access memory at address 0x10" \
  58          "inaccessible memory is reported"
  59
  60 gdb_load ${binfile}
  61
  62 # Check the address of a variable.  If it is bigger than 32-bit,
  63 # assume our target has 64-bit addresses that are not supported by SREC,
  64 # IHEX and TEKHEX.  We skip those tests then.
  65 set max_32bit_address "0xffffffff"
  66 set data_address [get_hexadecimal_valueof "&intarray" 0x100000000]
  67 if {${data_address} > ${max_32bit_address}} {
  68     set is64bitonly "yes"
  69 }
  70
  71 # Clean up any stale output files from previous test runs
  72
  73 set filenames {}
  74 set all_files {
  75     intarr1.bin intarr1b.bin intarr1.ihex
  76     intarr1.srec intarr1.tekhex intarr1.verilog
  77     intarr2.bin intarr2b.bin intarr2.ihex
  78     intarr2.srec intarr2.tekhex intarr2.verilog
  79     intstr1.bin intstr1b.bin intstr1.ihex
  80     intstr1.srec intstr1.tekhex intstr1.verilog
  81     intstr2.bin intstr2b.bin intstr2.ihex
  82     intstr2.srec intstr2.tekhex intstr2.verilog
  83     intarr3.srec
  84 }
  85
  86 # This loop sets variables dynamically -- each name listed in
  87 # $ALL_FILES is both a file name and a variable name.
  88 foreach file $all_files {
  89     if {[is_remote host]} {
  90         set this_name $file
  91     } else {
  92         set this_name [standard_output_file $file]
  93     }
  94
  95     lappend filenames [set ${file} $this_name]
  96 }
  97
  98 remote_exec host "rm -f $filenames"
  99
 100 # Test help (FIXME:)
 101
 102 # Run target program until data structs are initialized.
 103
 104 if {![runto checkpoint1]} {
 105     untested "couldn't run to checkpoint"
 106     return -1
 107 }
 108
 109 # Get the endianness for the later use with endianless formats.
 110
 111 set endian [get_endianness]
 112
 113 # Now generate some dump files.
 114
 115 proc make_dump_file { command msg } {
 116   global gdb_prompt
 117
 118     gdb_test_multiple "${command}" "$msg" {
 119         -re ".*\[Ee\]rror.*$gdb_prompt $"      { fail $msg }
 120         -re ".*\[Ww\]arning.*$gdb_prompt $"    { fail $msg }
 121         -re ".*\[Uu\]ndefined .*$gdb_prompt $" { fail $msg }
 122         -re ".*$gdb_prompt $"                  { pass $msg }
 123     }
 124 }
 125
 126 make_dump_file "dump val [set intarr1.bin] intarray" \
 127         "dump array as value, default"
 128
 129 make_dump_file "dump val [set intstr1.bin] intstruct" \
 130         "dump struct as value, default"
 131
 132 make_dump_file "dump bin val [set intarr1b.bin] intarray" \
 133         "dump array as value, binary"
 134
 135 make_dump_file "dump bin val [set intstr1b.bin] intstruct" \
 136         "dump struct as value, binary"
 137
 138 make_dump_file "dump srec val [set intarr1.srec] intarray" \
 139         "dump array as value, srec"
 140
 141 make_dump_file "dump srec val [set intstr1.srec] intstruct" \
 142         "dump struct as value, srec"
 143
 144 # 64-bit address out of range for Intel Hex file
 145 if {![string compare $is64bitonly "no"]} {
 146     make_dump_file "dump ihex val [set intarr1.ihex] intarray" \
 147             "dump array as value, intel hex"
 148
 149     make_dump_file "dump ihex val [set intstr1.ihex] intstruct" \
 150             "dump struct as value, intel hex"
 151 }
 152
 153 make_dump_file "dump tekhex val [set intarr1.tekhex] intarray" \
 154         "dump array as value, tekhex"
 155
 156 make_dump_file "dump tekhex val [set intstr1.tekhex] intstruct" \
 157         "dump struct as value, tekhex"
 158
 159 make_dump_file "dump verilog val [set intarr1.verilog] intarray" \
 160         "dump array as value, verilog"
 161
 162 make_dump_file "dump verilog val [set intstr1.verilog] intstruct" \
 163         "dump struct as value, verilog"
 164
 165 proc capture_value { expression args } {
 166     global gdb_prompt
 167     global expect_out
 168
 169     set output_string ""
 170     if {[llength $args] > 0} {
 171         # Convert $args into a simple string and don't use EXPRESSION
 172         # in the test name.
 173         set test "[join $args]; capture"
 174     } {
 175         set test "capture $expression"
 176     }
 177     gdb_test_multiple "print ${expression}" "$test" {
 178         -re "\\$\[0-9\]+ = (\[^\r\n\]+).*$gdb_prompt $" {
 179             set output_string "$expect_out(1,string)"
 180             pass "$test"
 181         }
 182         -re "(Cannot access memory at address \[^\r\n\]+).*$gdb_prompt $" {
 183             # Even a failed value is valid
 184             set output_string "$expect_out(1,string)"
 185             pass "$test"
 186         }
 187     }
 188     return $output_string
 189 }
 190
 191 # POINTER is a pointer and this proc captures the value of POINTER along
 192 # with POINTER's type.  For example, POINTER is "&intarray", this proc will
 193 # call "p &intarray", capture "(int (*)[32]) 0x804a0e0", and return this
 194 # string.
 195
 196 proc capture_pointer_with_type { pointer } {
 197     global gdb_prompt
 198     global expect_out
 199
 200     set test "capture type of pointer $pointer"
 201     set output_string ""
 202     gdb_test_multiple "p ${pointer}" $test {
 203         -re "\\$\[0-9\]+ = .*$gdb_prompt $" {
 204             # Expected output of "p ${pointer}" is like "$7 = (int (*)[32]) 0x804a0e0",
 205             # and we want to extract "(int (*)[32]) 0x804a0e0" from it via
 206             # following regexp.
 207             if [regexp " \\(.*\\).* 0x\[0-9a-fA-F\]+" $expect_out(0,string) output_string] {
 208                 # OUTPUT_STRING is expected to be like "(int (*)[32]) 0x804a0e0".
 209                 pass "$test"
 210             } else {
 211                 fail "$test"
 212             }
 213         }
 214     }
 215
 216     return $output_string
 217 }
 218
 219 set array_start  [capture_value "/x &intarray\[0\]"]
 220 set array_end    [capture_value "/x &intarray\[32\]"]
 221 set struct_start [capture_value "/x &intstruct"]
 222 set struct_end   [capture_value "/x &intstruct + 1"]
 223
 224 set array_val    [capture_value "intarray"]
 225 set struct_val   [capture_value "intstruct"]
 226
 227 set array_ptr_type [capture_pointer_with_type "&intarray"]
 228 set struct_ptr_type [capture_pointer_with_type "&intstruct"]
 229
 230 make_dump_file "dump mem [set intarr2.bin] $array_start $array_end" \
 231         "dump array as memory, default"
 232
 233 make_dump_file "dump  mem [set intstr2.bin] $struct_start $struct_end" \
 234         "dump struct as memory, default"
 235
 236 make_dump_file "dump bin mem [set intarr2b.bin] $array_start $array_end" \
 237         "dump array as memory, binary"
 238
 239 make_dump_file "dump bin mem [set intstr2b.bin] $struct_start $struct_end" \
 240         "dump struct as memory, binary"
 241
 242 make_dump_file "dump srec mem [set intarr2.srec] $array_start $array_end" \
 243         "dump array as memory, srec"
 244
 245 make_dump_file "dump srec mem [set intstr2.srec] $struct_start $struct_end" \
 246         "dump struct as memory, srec"
 247
 248 # 64-bit address out of range for Intel Hex file
 249 if {![string compare $is64bitonly "no"]} {
 250     make_dump_file "dump ihex mem [set intarr2.ihex] $array_start $array_end" \
 251             "dump array as memory, ihex"
 252
 253     make_dump_file "dump ihex mem [set intstr2.ihex] $struct_start $struct_end" \
 254             "dump struct as memory, ihex"
 255 }
 256
 257 make_dump_file "dump tekhex mem [set intarr2.tekhex] $array_start $array_end" \
 258         "dump array as memory, tekhex"
 259
 260 make_dump_file "dump tekhex mem [set intstr2.tekhex] $struct_start $struct_end" \
 261         "dump struct as memory, tekhex"
 262
 263 make_dump_file "dump verilog mem [set intarr2.verilog] $array_start $array_end" \
 264         "dump array as memory, verilog"
 265
 266 make_dump_file "dump verilog mem [set intstr2.verilog] $struct_start $struct_end" \
 267         "dump struct as memory, verilog"
 268
 269 # test complex expressions
 270 make_dump_file \
 271     "dump srec mem [set intarr3.srec] &intarray \(char *\) &intarray + sizeof intarray" \
 272         "dump array as mem, srec, expressions"
 273
 274 proc test_restore_saved_value { restore_args msg oldval newval } {
 275     global gdb_prompt
 276
 277     gdb_test "restore $restore_args" \
 278         "Restoring .*" \
 279         "$msg; file restored ok"
 280     if { ![string compare $oldval \
 281                [capture_value $newval "$msg"]] } then {
 282         pass "$msg; value restored ok"
 283     } else {
 284         fail "$msg; value restored ok"
 285     }
 286 }
 287
 288 if {![string compare $is64bitonly "no"]} {
 289
 290
 291   test_restore_saved_value "[set intarr1.srec]" "array as value, srec" \
 292         $array_val "intarray"
 293
 294   test_restore_saved_value "[set intstr1.srec]" "struct as value, srec" \
 295         $struct_val "intstruct"
 296
 297   print_zero_all
 298
 299   test_restore_saved_value "[set intarr2.srec]" "array as memory, srec" \
 300         $array_val "intarray"
 301
 302   test_restore_saved_value "[set intstr2.srec]" "struct as memory, srec" \
 303         $struct_val "intstruct"
 304
 305   print_zero_all
 306
 307   test_restore_saved_value "[set intarr1.ihex]" "array as value, ihex" \
 308         $array_val "intarray"
 309
 310   test_restore_saved_value "[set intstr1.ihex]" "struct as value, ihex" \
 311         $struct_val "intstruct"
 312
 313   print_zero_all
 314
 315   test_restore_saved_value "[set intarr2.ihex]" "array as memory, ihex" \
 316         $array_val "intarray"
 317
 318   test_restore_saved_value "[set intstr2.ihex]" "struct as memory, ihex" \
 319         $struct_val "intstruct"
 320
 321   print_zero_all
 322
 323   test_restore_saved_value "[set intarr1.tekhex]" "array as value, tekhex" \
 324         $array_val "intarray"
 325
 326   test_restore_saved_value "[set intstr1.tekhex]" "struct as value, tekhex" \
 327         $struct_val "intstruct"
 328
 329   print_zero_all
 330
 331   test_restore_saved_value "[set intarr2.tekhex]" "array as memory, tekhex" \
 332         $array_val "intarray"
 333
 334   test_restore_saved_value "[set intstr2.tekhex]" "struct as memory, tekhex" \
 335         $struct_val "intstruct"
 336 }
 337
 338 print_zero_all
 339
 340 test_restore_saved_value "[set intarr1.bin] binary $array_start" \
 341         "array as value, binary" \
 342         $array_val "intarray"
 343
 344 test_restore_saved_value "[set intstr1.bin] binary $struct_start" \
 345         "struct as value, binary" \
 346         $struct_val "intstruct"
 347
 348 print_zero_all
 349
 350 test_restore_saved_value "[set intarr2.bin] binary $array_start" \
 351         "array as memory, binary" \
 352         $array_val "intarray"
 353
 354 test_restore_saved_value "[set intstr2.bin] binary $struct_start" \
 355         "struct as memory, binary" \
 356         $struct_val "intstruct"
 357
 358 # test restore with offset.
 359
 360 set array2_start   [capture_value "/x &intarray2\[0\]"]
 361 set struct2_start  [capture_value "/x &intstruct2"]
 362 set array2_offset  \
 363         [capture_value "(char *) &intarray2 - (char *) &intarray"]
 364 set struct2_offset \
 365         [capture_value "(char *) &intstruct2 - (char *) &intstruct"]
 366
 367 print_zero_all
 368
 369
 370 if {![string compare $is64bitonly "no"]} {
 371   test_restore_saved_value "[set intarr1.srec] $array2_offset" \
 372         "array copy, srec" \
 373         $array_val "intarray2"
 374
 375   test_restore_saved_value "[set intstr1.srec] $struct2_offset" \
 376         "struct copy, srec" \
 377         $struct_val "intstruct2"
 378
 379   print_zero_all
 380
 381   test_restore_saved_value "[set intarr1.ihex] $array2_offset" \
 382         "array copy, ihex" \
 383         $array_val "intarray2"
 384
 385   test_restore_saved_value "[set intstr1.ihex] $struct2_offset" \
 386         "struct copy, ihex" \
 387         $struct_val "intstruct2"
 388
 389   print_zero_all
 390
 391   test_restore_saved_value "[set intarr1.tekhex] $array2_offset" \
 392         "array copy, tekhex" \
 393         $array_val "intarray2"
 394
 395   test_restore_saved_value "[set intstr1.tekhex] $struct2_offset" \
 396         "struct copy, tekhex" \
 397         $struct_val "intstruct2"
 398 }
 399
 400 print_zero_all
 401
 402 test_restore_saved_value "[set intarr1.bin] binary $array2_start" \
 403         "array copy, binary" \
 404         $array_val "intarray2"
 405
 406 test_restore_saved_value "[set intstr1.bin] binary $struct2_start" \
 407         "struct copy, binary" \
 408         $struct_val "intstruct2"
 409
 410 #
 411 # test restore with start/stop addresses.
 412 #
 413 # For this purpose, we will restore just the third element of the array,
 414 # and check to see that adjacent elements are not modified.
 415 #
 416 # We will need the address and offset of the third and fourth elements.
 417 #
 418
 419 set element3_start  [capture_value "/x &intarray\[3\]"]
 420 set element4_start  [capture_value "/x &intarray\[4\]"]
 421 set element3_offset \
 422         [capture_value "/x (char *) &intarray\[3\] - (char *) &intarray\[0\]"]
 423 set element4_offset \
 424         [capture_value "/x (char *) &intarray\[4\] - (char *) &intarray\[0\]"]
 425
 426 if {![string compare $is64bitonly "no"]} {
 427   print_zero_all
 428
 429   test_restore_saved_value "[set intarr1.srec] 0 $element3_start $element4_start" \
 430         "array partial, srec" 4 "intarray\[3\]"
 431
 432   gdb_test "print intarray\[2\] == 0" " = 1" "element 2 not changed - 1"
 433   gdb_test "print intarray\[4\] == 0" " = 1" "element 4 not changed - 1"
 434
 435   print_zero_all
 436
 437   test_restore_saved_value "[set intarr1.ihex] 0 $element3_start $element4_start" \
 438         "array partial, ihex" 4 "intarray\[3\]"
 439
 440   gdb_test "print intarray\[2\] == 0" " = 1" "element 2 not changed - 2"
 441   gdb_test "print intarray\[4\] == 0" " = 1" "element 4 not changed - 2"
 442
 443   print_zero_all
 444
 445   test_restore_saved_value "[set intarr1.tekhex] 0 $element3_start $element4_start" \
 446         "array partial, tekhex" 4 "intarray\[3\]"
 447
 448   gdb_test "print intarray\[2\] == 0" " = 1" "element 2 not changed - 3"
 449   gdb_test "print intarray\[4\] == 0" " = 1" "element 4 not changed - 3"
 450 }
 451
 452 print_zero_all
 453
 454 test_restore_saved_value \
 455     "[set intarr1.bin] binary $array_start $element3_offset $element4_offset" \
 456     "array partial, binary" 4 "intarray\[3\]"
 457
 458 gdb_test "print intarray\[2\] == 0" " = 1" "element 2 not changed - 4"
 459 gdb_test "print intarray\[4\] == 0" " = 1" "element 4 not changed - 4"
 460
 461 if {![string compare $is64bitonly "no"]} {
 462   print_zero_all
 463
 464   # restore with expressions
 465   test_restore_saved_value \
 466         "[set intarr3.srec] (char*)${array2_start}-(char*)${array_start} &intarray\[3\] &intarray\[4\]" \
 467         "array partial with expressions" 4 "intarray2\[3\]"
 468
 469   gdb_test "print intarray2\[2\] == 0" " = 1" "element 2 not changed, == 4"
 470   gdb_test "print intarray2\[4\] == 0" " = 1" "element 4 not changed, == 4"
 471 }
 472
 473
 474 # Test writing a file of each format to a directory that does not exist.
 475
 476 foreach_with_prefix format $formats {
 477     gdb_test "dump $format memory /tmp/non/existent/directory/file $array_start $array_end" \
 478         "/tmp/non/existent/directory/file: No such file or directory." \
 479         "dump to non-existent directory"
 480 }
 481
 482 # Now start a fresh gdb session, and reload the saved value files.
 483
 484 clean_restart
 485 gdb_file_cmd ${binfile}
 486
 487 # Now fix the endianness at the correct state.
 488
 489 gdb_test_multiple "set endian $endian" "set endianness" {
 490     -re ".* (big|little) endian.*$gdb_prompt $" {
 491         pass "setting $endian endianness"
 492     }
 493 }
 494
 495 # Reload saved values one by one, and compare.
 496
 497 if { ![string compare $array_val \
 498            [capture_value "intarray" "file binfile; intarray"]] } then {
 499     fail "start with intarray un-initialized"
 500 } else {
 501     pass "start with intarray un-initialized"
 502 }
 503
 504 if { ![string compare $struct_val \
 505            [capture_value "intstruct" "file binfile; intstruct"]] } then {
 506     fail "start with intstruct un-initialized"
 507 } else {
 508     pass "start with intstruct un-initialized"
 509 }
 510
 511 proc test_reload_saved_value { filename msg oldval newval } {
 512     global gdb_prompt
 513
 514     gdb_file_cmd $filename
 515     if { ![string compare $oldval \
 516                [capture_value $newval "$msg"]] } then {
 517         pass "$msg; value restored ok"
 518     } else {
 519         fail "$msg; value restored ok"
 520     }
 521 }
 522
 523 # srec format can not be loaded for 64-bit-only platforms
 524 if {![string compare $is64bitonly "no"]} {
 525   test_reload_saved_value "[set intarr1.srec]" "reload array as value, srec" \
 526         $array_val "\*$array_ptr_type"
 527   test_reload_saved_value "[set intstr1.srec]" "reload struct as value, srec" \
 528         $struct_val "\*$struct_ptr_type"
 529   test_reload_saved_value "[set intarr2.srec]" "reload array as memory, srec" \
 530         $array_val "\*$array_ptr_type"
 531   test_reload_saved_value "[set intstr2.srec]" "reload struct as memory, srec" \
 532         $struct_val "\*$struct_ptr_type"
 533 }
 534
 535 # ihex format can not be loaded for 64-bit-only platforms
 536 if {![string compare $is64bitonly "no"]} {
 537
 538   test_reload_saved_value "[set intarr1.ihex]" \
 539       "reload array as value, intel hex" \
 540         $array_val "\*$array_ptr_type"
 541   test_reload_saved_value "[set intstr1.ihex]" \
 542       "reload struct as value, intel hex" \
 543         $struct_val "\*$struct_ptr_type"
 544   test_reload_saved_value "[set intarr2.ihex]" \
 545       "reload array as memory, intel hex" \
 546         $array_val "\*$array_ptr_type"
 547   test_reload_saved_value "[set intstr2.ihex]" \
 548       "reload struct as memory, intel hex" \
 549         $struct_val "\*$struct_ptr_type"
 550 }
 551
 552 # tekhex format can not be loaded for 64-bit-only platforms
 553 if {![string compare $is64bitonly "no"]} {
 554   test_reload_saved_value "[set intarr1.tekhex]" \
 555       "reload array as value, tekhex" \
 556         $array_val "\*$array_ptr_type"
 557   test_reload_saved_value "[set intstr1.tekhex]" \
 558       "reload struct as value, tekhex" \
 559         $struct_val "\*$struct_ptr_type"
 560   test_reload_saved_value "[set intarr2.tekhex]" \
 561       "reload array as memory, tekhex" \
 562         $array_val "\*$array_ptr_type"
 563   test_reload_saved_value "[set intstr2.tekhex]" \
 564       "reload struct as memory, tekhex" \
 565         $struct_val "\*$struct_ptr_type"
 566 }
 567
 568 # clean up files
 569
 570 remote_exec host "rm -f $filenames"