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# Copyright 2023-2024 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/>. */
# Check that epilogue unwind info is used, even if no debug info is available.
require is_x86_64_m64_target
set srcfile_flags {}
lappend srcfile_flags debug
lappend srcfile_flags nopie
set srcfile2_flags {}
lappend srcfile2_flags nodebug
lappend srcfile_flags nopie
set ldflags $srcfile_flags
if [info exists COMPILE] {
# Make sure that we use .eh_frame info, by generating it
# using -fasynchronous-unwind-tables.
if { [gdb_can_simple_compile fasynchronous-unwind-tables \
{ void foo () { } } object -fasynchronous-unwind-tables] } {
lappend srcfile2_flags additional_flags=-fasynchronous-unwind-tables
} else {
unsupported "required: .eh_frame"
return
}
standard_testfile unwind-on-each-insn.c unwind-on-each-insn-foo.c
# When updating the .s file, use these flags to generate the file:
#lappend srcfile2_flags additional_flags=-save-temps
#lappend srcfile2_flags additional_flags=-dA
# and do the following:
# - copy it in place, run the test-case and verify that all tests pass.
# - confuse the amd64 epilogue unwinder by inserting the following
# in foo:
# nop
# + pushq $.L1
# + ret
# + .L1:
# + nop
# popq %rbp
# - verify that the test-case passes.
} else {
standard_testfile unwind-on-each-insn.c .s
}
source $srcdir/$subdir/unwind-on-each-insn.exp.tcl
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