mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
67 lines
2.4 KiB
Plaintext
67 lines
2.4 KiB
Plaintext
# Copyright 2021-2022 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/>. */
|
|
|
|
# Set a breakpoint on libc's _exit, and verify that it triggers. The function
|
|
# tends to do a syscall immediately after the prologue, and if the breakpoint is
|
|
# set past the syscall due to faulty prologue skipping, the breakpoint will not
|
|
# trigger.
|
|
#
|
|
# In particular, we're trying to excercise the instruction analysis
|
|
# functionality of prologue skipping. If the non-minimal symbols are
|
|
# read for libc, then that functionality might not be used because f.i.
|
|
# line-info is used instead. Also, if the minimal symbols are not read
|
|
# for libc, then the breakpoint is set on the exec-local _exit@plt instead,
|
|
# and that functionality will also not be used.
|
|
#
|
|
# We may get the required setup in case of a libc with misssing separate
|
|
# debuginfo, but we want the same effect if that debuginfo is installed.
|
|
#
|
|
# So, we use -readnever to read minimal symbols, but not non-miminal symbols.
|
|
#
|
|
# Because the code at _exit may be and usually is optimized, the test is in
|
|
# the gdb.opt directory.
|
|
|
|
standard_testfile
|
|
|
|
# See if we have target board readnow.exp or similar.
|
|
if { [lsearch -exact $GDBFLAGS -readnow] != -1 \
|
|
|| [lsearch -exact $GDBFLAGS --readnow] != -1 } {
|
|
untested "--readnever not allowed in combination with --readnow"
|
|
return -1
|
|
}
|
|
|
|
save_vars { GDBFLAGS } {
|
|
append GDBFLAGS " -readnever"
|
|
|
|
if {[prepare_for_testing "failed to prepare" $testfile $srcfile nodebug]} {
|
|
return -1
|
|
}
|
|
}
|
|
|
|
if ![runto_main] then {
|
|
return 0
|
|
}
|
|
|
|
gdb_breakpoint "_exit"
|
|
|
|
# Give some background information about the breakpoint(s) and corresponding
|
|
# the shared lib(s).
|
|
gdb_test "info breakpoints"
|
|
gdb_test "info shared"
|
|
|
|
# If the skip_prologue analysis of _exit is too eager, we may not hit the
|
|
# breakpoint.
|
|
gdb_continue_to_breakpoint "_exit" "_exit \\(\\) .*"
|