1# Copyright 2017-2019 Free Software Foundation, Inc. 2# 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15# 16# This file is part of the gdb testsuite. 17 18# Test single stepping through POWER8/ISA 2.07 atomic sequences beginning with 19# a lbarx/lharx/lqarx instruction and ending with a stbcx/sthcx/stqxc 20# instruction. Note that although lbarx, lharx, stbcx and sthcx instructions 21# were introduced in ISA 2.06, they were implemented only in POWER8 (ISA 2.07). 22 23 24if {![istarget "powerpc*"] || ![is_lp64_target]} { 25 untested "skipping powerpc isa 207 atomic sequences test" 26 return 27} 28 29standard_testfile .c .S 30 31if { [prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2" \ 32 {debug quiet}] } { 33 return -1 34} 35 36# The test proper. DISPLACED is true if we should try with displaced 37# stepping. 38 39proc do_test { displaced } { 40 global decimal hex 41 global gdb_prompt inferior_exited_re srcfile srcfile2 42 43 if ![runto_main] then { 44 untested "could not run to main" 45 return -1 46 } 47 48 gdb_test_no_output "set displaced-stepping $displaced" 49 50 gdb_breakpoint "test_atomic_sequences" "Breakpoint $decimal at $hex" \ 51 "set the breakpoint at the start of the test function" 52 53 gdb_test_multiple "continue" "Continue until lbarx/stbcx start breakpoint" { 54 -re "$inferior_exited_re with code 01.\[\r\n\]+$gdb_prompt $" { 55 unsupported "POWER8/ISA 2.07 atomic instructions not supported." 56 return -1 57 } 58 -re "Continuing.*Breakpoint $decimal.*$gdb_prompt $" { 59 pass "continue until test_atomic_sequences function" 60 } 61 } 62 63 set bp1 [gdb_get_line_number "lbarx" "$srcfile2"] 64 gdb_breakpoint "$bp1" "Breakpoint $decimal at $hex" \ 65 "set the breakpoint at the start of the lbarx/stbcx sequence" 66 67 set bp2 [gdb_get_line_number "lharx" "$srcfile2"] 68 gdb_breakpoint "$bp2" "Breakpoint $decimal at $hex" \ 69 "set the breakpoint at the start of the lharx/sthcx sequence" 70 71 set bp3 [gdb_get_line_number "lqarx" "$srcfile2"] 72 gdb_breakpoint "$bp3" "Breakpoint $decimal at $hex" \ 73 "set the breakpoint at the start of the lqarx/stqcx sequence" 74 75 gdb_test continue "Continuing.*Breakpoint $decimal.*" \ 76 "continue until lbarx/stbcx start breakpoint" 77 78 gdb_test nexti "bne.*1b" \ 79 "step through the lbarx/stbcx sequence" 80 81 gdb_test continue "Continuing.*Breakpoint $decimal.*" \ 82 "continue until lharx/sthcx start breakpoint" 83 84 gdb_test nexti "bne.*2b" \ 85 "step through the lharx/sthcx sequence" 86 87 gdb_test continue "Continuing.*Breakpoint $decimal.*" \ 88 "continue until ldqrx/stqcx start breakpoint" 89 90 gdb_test nexti "bne.*3b" \ 91 "step through the lqarx/stqcx sequence" 92} 93 94foreach displaced { "off" "on" } { 95 with_test_prefix "displaced=$displaced" { 96 do_test $displaced 97 } 98} 99