mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-12-27 01:28:46 +00:00
8908d9c45c
For a -g0 -fasynchronous-unwind-tables exec (without .debug_info but with .eh_frame section), start using the dwarf2 unwinder instead of the "amd64 epilogue override" unwinder, by returning true in compunit_epilogue_unwind_valid for cust == nullptr. This has effect both on the amd64 and i386 targets, but only add amd64 test-case gdb.base/unwind-on-each-insn-amd64-2.exp.
53 lines
1.9 KiB
Plaintext
53 lines
1.9 KiB
Plaintext
# Copyright 2023 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 {debug}
|
|
set srcfile2_flags {nodebug}
|
|
|
|
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
|