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# Copyright 2015-2024 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Test ability to load an elf64-i386 core file. The provided core file was
# elf64-x8664 one but it got binary patched to i386:
# Elf32_Ehdr.e_machine @0x12..0x13
# Elf64_Ehdr.e_machine @0x12..0x13
# #define EM_386 3 /* Intel 80386 */
# #define EM_X86_64 62 /* AMD x86-64 architecture */
# patch @0x12: 0x3E -> 0x03
require {is_any_target "i?86-*-*" "x86_64-*-*"}
standard_testfile
clean_restart
set gnutargets [get_set_option_choices "set gnutarget"]
if { [lsearch -exact $gnutargets elf64-little] == -1 } {
untested ".text is readable"
return
}
set corebz2file ${srcdir}/${subdir}/${testfile}.core.bz2
# Entry point of the original executable.
set address 0x400078
set corefile [decompress_bz2 $corebz2file]
if { $corefile == "" } {
untested "failed bzip2"
return -1
}
file stat ${corefile} corestat
if {$corestat(size) != 102400} {
untested "bzip2 produces invalid result"
return -1
}
set corefile [gdb_remote_download host $corefile]
# First check if this particular GDB supports i386, otherwise we should not
# expect the i386 core file to be loaded successfully.
set archs [get_set_option_choices "set architecture" "i386"]
set supports_arch_i386 [expr [lsearch -exact $archs i386] != -1]
# Wrongly built GDB complains by:
# "..." is not a core dump: File format not recognized
# As the provided test core has 64bit PRSTATUS i386 built GDB cannot parse it.
# This is just a problem of the test case, real-world elf64-i386 file will have
# 32bit PRSTATUS. One cannot prepare elf64-i386 core file from elf32-i386 by
# objcopy as it corrupts the core file beyond all recognition.
# The output therefore does not matter much, just we should not get GDB
# internal error.
#
# If this particular GDB does not support i386, it is expected GDB will not
# recognize the core file. If it does anyway, it should not crash.
set test "load core file"
gdb_test_multiple "core-file ${corefile}" $test {
-re "no core file handler recognizes format.*\r\n$gdb_prompt $" {
if { $supports_arch_i386 } {
fail $test
} else {
pass $test
untested ".text is readable (core file unrecognized)"
return
}
}
-re "\r\n$gdb_prompt $" {
pass $test
}
}
# Test if at least the core file segments memory has been loaded.
# https://bugzilla.redhat.com/show_bug.cgi?id=457187
gdb_test "x/bx $address" "\r\n\[ \t\]*$address:\[ \t\]*0xf4\[ \t\]*" ".text is readable"
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