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143 lines
4.7 KiB
Plaintext
143 lines
4.7 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2013-2020 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corp. <markus.t.metzger@intel.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if { [skip_btrace_tests] } {
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unsupported "target does not support record-btrace"
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return -1
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}
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# This test is stepping on instruction level. To guarantee that we always
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# get the same execution trace, we use an assembly source file.
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#
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# We use different assembly sources based on the target architecture.
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#
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# Luckily, they are similar enough that a single test script can handle
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# both.
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if [info exists COMPILE] {
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# make check RUNTESTFLAGS="gdb.btrace/stepi.exp COMPILE=1"
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standard_testfile record_goto.c
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lappend opts debug
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} elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
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if {[is_amd64_regs_target]} {
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standard_testfile x86_64-record_goto.S
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} else {
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standard_testfile i686-record_goto.S
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}
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} else {
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unsupported "target architecture not supported"
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return -1
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}
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if [prepare_for_testing "failed to prepare" $testfile $srcfile] {
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return -1
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}
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if ![runto_main] {
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untested "failed to run to main"
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return -1
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}
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global gdb_prompt
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proc check_replay_at { insn } {
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gdb_test "info record" [multi_line \
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"Active record target: record-btrace" \
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".*" \
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"Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for .*" \
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"Replay in progress\. At instruction $insn\." \
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]
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}
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# trace the call to the test function
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gdb_test_no_output "record btrace"
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gdb_test "next"
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# we start with stepping to make sure that the trace is fetched automatically
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gdb_test "reverse-stepi" ".*fun4\.5.*"
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gdb_test "reverse-stepi" ".*fun4\.5.*"
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# let's check where we are in the trace
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with_test_prefix "reverse-stepi to 39" { check_replay_at 39 }
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# let's step forward and check again
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gdb_test "stepi" ".*fun4\.5.*"
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with_test_prefix "stepi to 40" { check_replay_at 40 }
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# with the next step, we stop replaying
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gdb_test "stepi" ".*main\.3.*"
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gdb_test "info record" [multi_line \
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"Active record target: record-btrace" \
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".*" \
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"Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
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] "stepi to live"
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# let's try nexti
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gdb_test "reverse-nexti" ".*main\.2.*"
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with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
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# we can't reverse-nexti any further
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gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
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with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
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# but we can step back again
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gdb_test "nexti" ".*main\.3.*" "next, 1.5"
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gdb_test "info record" [multi_line \
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"Active record target: record-btrace" \
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".*" \
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"Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
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] "nexti back"
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# let's step from a goto position somewhere in the middle
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gdb_test "record goto 22" ".*fun3\.2.*"
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with_test_prefix "goto 22" { check_replay_at 22 }
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gdb_test "stepi" ".*fun1\.1.*"
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with_test_prefix "stepi to 23" { check_replay_at 23 }
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gdb_test "reverse-stepi" ".*fun3\.2.*"
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with_test_prefix "reverse-stepi to 22" { check_replay_at 22 }
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gdb_test "nexti" ".*fun3\.3.*"
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with_test_prefix "nexti to 27" { check_replay_at 27 }
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gdb_test "reverse-nexti" ".*fun3\.2.*"
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with_test_prefix "reverse-nexti to 22" { check_replay_at 22 }
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# let's try to step off the left end
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gdb_test "record goto begin" ".*main\.2.*"
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with_test_prefix "goto begin" { check_replay_at 1 }
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gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
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gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
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with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }
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gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
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gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
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with_test_prefix "reverse-nexti at begin" { check_replay_at 1 }
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# we can step forward, though
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gdb_test "stepi" ".*fun4\.1.*"
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with_test_prefix "stepi to 2" { check_replay_at 2 }
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# let's try to step off the left end again
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gdb_test "reverse-stepi" ".*main\.2.*"
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gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
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gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
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with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }
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