gdb/testsuite/gdb.arch/i386-biarch-core.exp

   1 # Copyright 2015-2021 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 # Test ability to load an elf64-i386 core file.  The provided core file was
  17 # elf64-x8664 one but it got binary patched to i386:
  18 # Elf32_Ehdr.e_machine @0x12..0x13
  19 # Elf64_Ehdr.e_machine @0x12..0x13
  20 # #define EM_386           3              /* Intel 80386 */
  21 # #define EM_X86_64       62              /* AMD x86-64 architecture */
  22 # patch @0x12: 0x3E -> 0x03
  23
  24 if { ![istarget "i?86-*-*"] && ![istarget "x86_64-*-*"] } then {
  25     verbose "Skipping i386 biarch core test."
  26     return
  27 }
  28
  29 standard_testfile
  30
  31 gdb_exit
  32 gdb_start
  33 gdb_reinitialize_dir $srcdir/$subdir
  34
  35 set test "complete set gnutarget"
  36 gdb_test_multiple "complete set gnutarget " $test {
  37     -re "set gnutarget elf64-little\r\n(.*\r\n)?$gdb_prompt $" {
  38         pass $test
  39     }
  40     -re "\r\n$gdb_prompt $" {
  41         pass $test
  42         untested ".text is readable"
  43         return
  44     }
  45 }
  46
  47 set corebz2file ${srcdir}/${subdir}/${testfile}.core.bz2
  48 set corefile [standard_output_file ${testfile}.core]
  49 # Entry point of the original executable.
  50 set address 0x400078
  51
  52 if {[catch "system \"bzip2 -dc ${corebz2file} >${corefile}\""] != 0} {
  53     untested "failed bzip2"
  54     return -1
  55 }
  56 file stat ${corefile} corestat
  57 if {$corestat(size) != 102400} {
  58     untested "bzip2 produces invalid result"
  59     return -1
  60 }
  61
  62 # First check if this particular GDB supports i386, otherwise we should not
  63 # expect the i386 core file to be loaded successfully.
  64 set supports_arch_i386 1
  65 set test "complete set architecture i386"
  66 gdb_test_multiple $test $test {
  67     -re "\r\nset architecture i386\r\n(.*\r\n)?$gdb_prompt $" {
  68     }
  69     -re "\r\n$gdb_prompt $" {
  70         set supports_arch_i386 0
  71     }
  72 }
  73
  74 # Wrongly built GDB complains by:
  75 # "..." is not a core dump: File format not recognized
  76 # As the provided test core has 64bit PRSTATUS i386 built GDB cannot parse it.
  77 # This is just a problem of the test case, real-world elf64-i386 file will have
  78 # 32bit PRSTATUS.  One cannot prepare elf64-i386 core file from elf32-i386 by
  79 # objcopy as it corrupts the core file beyond all recognition.
  80 # The output therefore does not matter much, just we should not get GDB
  81 # internal error.
  82 #
  83 # If this particular GDB does not support i386, it is expected GDB will not
  84 # recognize the core file.  If it does anyway, it should not crash.
  85 set test "load core file"
  86 gdb_test_multiple "core-file ${corefile}" $test {
  87     -re "no core file handler recognizes format.*\r\n$gdb_prompt $" {
  88         if { $supports_arch_i386 } {
  89             fail $test
  90         } else {
  91             pass $test
  92             untested ".text is readable (core file unrecognized)"
  93             return
  94         }
  95     }
  96     -re "\r\n$gdb_prompt $" {
  97         pass $test
  98     }
  99 }
 100
 101 # Test if at least the core file segments memory has been loaded.
 102 # https://bugzilla.redhat.com/show_bug.cgi?id=457187
 103 gdb_test "x/bx $address" "\r\n\[ \t\]*$address:\[ \t\]*0xf4\[ \t\]*" ".text is readable"