| # Copyright 2008-2021 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 { |
| 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 |
| } |
| } |