mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-13 04:13:33 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
116 lines
4.0 KiB
Plaintext
116 lines
4.0 KiB
Plaintext
# Copyright 2020-2024 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test stepping over an exec syscall instruction in a multi-threaded program.
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standard_testfile .c -execd.c
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set syscalls_src $srcdir/lib/my-syscalls.S
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# EXECR_THREAD is "leader" or "other", and decides which thread does the exec.
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#
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# If DIFFERENT_TEXT_SEGMENTS is true, the exec'er and exec'd program are
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# compiled with different, explicit text segment addresses. This makes it so
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# the address of the displaced stepping buffer in the old executable is likely
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# not accessible in the new executable. This might catch cases where GDB tries
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# (wrongfully) to restore the bytes saved from the old executable in the new
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# executable.
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#
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# DISPLACED_STEPPING is "auto" or "off" and controls the value of "set
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# displaced-stepping".
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proc do_test { execr_thread different_text_segments displaced_stepping } {
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global srcdir subdir srcfile srcfile2 binfile
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global syscalls_src
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global decimal hex
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set execr_srcs [list $srcdir/$subdir/$srcfile $syscalls_src]
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set execd_srcs [list $srcdir/$subdir/$srcfile2]
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# Generate unique filenames for each case.
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set execr_binfile $binfile-execr-thread-$execr_thread-diff-text-segs-$different_text_segments
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set execd_binfile $execr_binfile-execd
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set execr_opts [list debug]
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set execd_opts [list debug]
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lappend_include_file execr_opts $::srcdir/lib/my-syscalls.h
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if { $different_text_segments } {
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lappend execr_opts "text_segment=0x600000"
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lappend execd_opts "text_segment=0x800000"
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}
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if { $execr_thread == "leader" } {
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lappend execr_opts "additional_flags=-DLEADER_DOES_EXEC"
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} elseif { $execr_thread == "other" } {
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lappend execr_opts "additional_flags=-DOTHER_DOES_EXEC"
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} else {
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error "Invalid execr_thread value: $execr_thread."
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}
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# Compile execr binary (the one that does the exec).
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if {[gdb_compile_pthreads $execr_srcs $execr_binfile executable $execr_opts] != "" } {
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return -1
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}
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# Compile the second binary (the one that gets exec'd).
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if {[gdb_compile $execd_srcs $execd_binfile executable $execd_opts] != "" } {
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return -1
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}
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clean_restart ${execr_binfile}
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gdb_test_no_output "set displaced-stepping $displaced_stepping"
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if ![runto_main] {
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return
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}
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# Leave breakpoint main inserted, we expect to hit it after exec.
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# This breakpoint will be stepped by whatever thread does the exec.
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gdb_test "break my_execve_syscall if 0" "Breakpoint $decimal at $hex.*"
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# Continue across exec to main.
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if { [target_is_gdbserver] } {
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setup_kfail gdb/27020 "*-*-*"
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}
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set failed [gdb_test "continue" \
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"process $decimal is executing new program: .* hit Breakpoint $decimal, main .*" \
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"continue across exec"]
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if { $failed } {
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return
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}
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# Just to confirm we are indeed in the execd program.
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gdb_test "print a_variable_in_execd" " = 1212"
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# Continue execution to make sure we can step over the breakpoint on main.
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# It would be nice to use gdb_continue_to_end to ensure the program can
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# exit properly, but it hangs due to PR gdb/26995.
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gdb_breakpoint foo
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gdb_test "continue" "Breakpoint $decimal, foo .*" \
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"continue to foo"
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}
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foreach_with_prefix displaced_stepping {auto off} {
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foreach_with_prefix different_text_segments {true false} {
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foreach_with_prefix execr_thread {leader other} {
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do_test $execr_thread $different_text_segments $displaced_stepping
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}
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}
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}
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