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# Copyright 2008-2018 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/>.
#
# This file is part of the gdb testsuite.
# Test single stepping through atomic sequences beginning with
# a lwarx/ldarx instruction and ending with a stwcx/stdcx
# instruction.
if {![istarget "powerpc*"] || ![is_lp64_target]} {
verbose "Skipping testing of powerpc64 single stepping over atomic sequences."
return
}
standard_testfile .S
if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} {debug quiet}] } {
return -1
}
# The test proper. DISPLACED is true if we should try with displaced
# stepping.
proc do_test { displaced } {
global decimal hex
if ![runto_main] then {
untested "could not run to main"
return -1
}
gdb_test_no_output "set displaced-stepping $displaced"
set bp1 [gdb_get_line_number "lwarx"]
gdb_breakpoint "$bp1" "Breakpoint $decimal at $hex" \
"set the breakpoint at the start of the lwarx/stwcx sequence"
set bp2 [gdb_get_line_number "ldarx"]
gdb_breakpoint "$bp2" "Breakpoint $decimal at $hex" \
"set the breakpoint at the start of the ldarx/stdcx sequence"
gdb_test continue "Continuing.*Breakpoint $decimal.*" \
"continue until lwarx/stwcx start breakpoint"
gdb_test nexti "bne.*1b" \
"step through the lwarx/stwcx sequence"
gdb_test continue "Continuing.*Breakpoint $decimal.*" \
"continue until ldarx/stdcx start breakpoint"
gdb_test nexti "bne.*1b" \
"step through the ldarx/stdcx sequence"
}
foreach displaced { "off" "on" } {
with_test_prefix "displaced=$displaced" {
do_test $displaced
}
}
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